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Clathria (Microciona) mytilifila Hajdu, Desqueyroux-Faundez, Carvalho, Lobo-Hajdu and Willenz 2013
No full textClathria (Microciona) mytilifila Hajdu, Desqueyroux-Faúndez, Carvalho, Lôbo-Hajdu and Willenz sp. nov. (Figs. 6E, 10A–I; Tab. 7) Clathria mytilifila Hajdu et al. (2009, nomen nudum) in Willenz et al. (2009: 122) Type material. Holotype. IZUA-POR 147, Tambor, Comau Fjord (42º24’09.66”S – 72º25’14.10”W, Chilean Patagonia), 5–6 m depth, coll. G. Lôbo-Hajdu and Ph.Willenz, 20 April 2004 —fragments from the holotype: MNRJ 8198 and RBINSc-IG 32231-POR 8198. Comparative material. Clathria (Microciona) discreta (Thiele, 1905) — MHNG 36566 (fragment from holotype ZMB 3302), microscopical preparations of thick sections. Clathria (Thalysias) membranacea (Thiele, 1905) — MHNG 18841 (fragment from holotype ZMB 3304), microscopical preparations of dissociated spicules and thick sections. Clathria (Cornulotrocha?) polita (Ridley, 1881) —MNHN LBIM NBE 915 (presumably from BMNH type), microscopical preparation of dissociated spicules Diagnosis. Clathria (Microciona) mytilifila sp. nov. is the only crustose Clathria in the Magellanic region and adjacent areas which has no megascleres larger than 250 µm and no isochelae larger than 10 µm. It has large, rare toxas (mean length ca. 200 µm) and highly conspicuous, stout, heavily spined acanthostyles. Description (Fig. 6E). Thin crust ( 350 µm long) being thus further differentiated from the new species. In addition, none of these has toxas as those reported here from the new species. C. (T.) lissocladus, C. (T.) originalis and C. (T.) paucispicula do not possess toxas at all, and can still be further set apart from C. (M.) mytilifila sp. nov. through the smooth principal styles reported from C. (T.) lissocladus, the lack of acanthostyles in C. (T.) originalis, and of isoquelae in C. (T.) paucispicula. C. (M.) discreta, C. (M.) ixauda, C. (M.) microjoanna and C. (M.) parthena have considerably smaller toxas, which in the case of C. (M.) microjoanna occur in a single size category. C. (M.) scotti has toxas that can be much larger than those in C. (M.) mytilifila sp. nov., and can be further distinguished from the new species by its lack of isochelae. Seven species remain which share the crustose habit with the new species: C. (M.) californiana, C. (M.) coccinea, C. (M.) dendyi, C. (M.) leighensis, C. (M.) novaezealandiae, C. (T.) coriocrassus and C. (T.) membranacea (microscopical preparations from holotype examined). All these species have important points of distinction as regards the new species. Clathria (M.) coccinea, C. (M.) dendyi, C. (M.) leighensis, C. (T.) membranacea and C. (T.) coriocrassus possess megascleres which may be considerably larger (> 350 µm). The latter has no toxas either. C. (M.) californiana has toxas in a single much smaller category of homogeneous dimensions (up to 55 µm long). C. (M.) novaezealandiae is an ill-known species, with an odd combination of microscleres, whose type appears to be lost (Bergquist & Fromont 1988, Hooper 2002). Even if the large arcuate chelae reported by Brøndsted (1924b) are deemed foreign, this species is still distinguishable from the Chilean species by its larger palmate isochelae (10–18 µm) and brownish live colour. Therefore, these species are all clearly separate from the new species, and no further listing of less conspicuous traits is necessary to sustain the argument. The new species appears thus unique among all biogeographically akin congeners sharing similar skeletal architecture.Published as part of Hajdu, Eduardo, Desqueyroux-Faúndez, Ruth, Carvalho, Mariana De Souza, Lôbo-Hajdu, Gisele & Willenz, Philippe, 2013, Twelve new Demospongiae (Porifera) from Chilean fjords, with remarks upon sponge-derived biogeographic compartments in the SE Pacific, pp. 1-64 in Zootaxa 3744 (1) on pages 42-47, DOI: 10.11646/zootaxa.3744.1.1, http://zenodo.org/record/527108
Desmanthus meandroides van Soest & Hajdu 2000
No full textDesmanthus meandroides van Soest & Hajdu, 2000 Tables 6, 7; Figs. 14A–I, 16N Synonymy and references: Desmanthus meandroides van Soest & Hajdu (2000: 302) and Muricy et al. (2011: 143); Desmanthus sp.: see references compiled in Muricy et al. (2011: 143). Type locality. Brazil. Material examined. CNPGG-2389, Cayo Arcas reef (20.20988°N, - 91.96686°W), 4 m depth, coll. Oscar Bocardo, 26 august 2017. Description. Thinly encrusting habit (Fig. 16N); covering an area ca. 11 cm 2; up to 0.1 cm high. Surface hispid with several subectosomal channels in a very characteristic meandriform pattern. Pores or oscules not visible. Color in vivo orange and after fixation light beige. Consistency firm. Skeleton. Styles of several sizes are disposed perpendicular to the surface (Fig. 14A). Desmas in choanosomal region with rhabdomes pointing outwards although not reaching the surface (Fig. 14C). Several subectosomal channels visible (Fig. 14B). Spicules. Megascleres (Figs. 14D–I): Desmas I, cladomes (Fig: 14F); 70– 141 (37.9)–190/4– 6.3 (1.2)–7.2 µm. Desmas II (Figs. 14G–I), cladomes; 110– 153.7 (27.2)–200/7– 10.5 (2)–15 µm and rhabdomes; 70– 108.3 (31)– 180/10– 13.5 (4.2)–25 µm. Styles, slightly curved and smooth (Fig. 14D); 150– 383.7 (221.7)–760/3.5– 8.6 (3.6)–14 µm. Distribution. Mexico (current record), Brazil (van Soest & Hajdu 2000). Remarks. Up to now, Desmanthus meandroides had been reported only in Brazil (van Soest & Hajdu 2000; Moraes et al. 2006). Thus, our study is the first record of the species for the GoM. Our material has external morphological features (shape, color, and surface pattern) and spicules quite similar to the original description by van Soest & Hajdu (2000). However, our material has, in general, smaller spicule sizes than the original; viz., desmas I cladomes 155–291/5–6 µm, desmas II with cladomes 155–267/8–17 µm, rhabdomes 49–204/10–30 µm, and styles 126–834/8–10 µm. Order Clionaida Morrow & Cárdenas, 2015Published as part of Ugalde, Diana, Fernandez, Julio C. C., Gómez, Patricia, Lôbo-Hajdu, Gisele & Simões, Nuno, 2021, An update on the diversity of marine sponges in the southern Gulf of Mexico coral reefs, pp. 1-112 in Zootaxa 5031 (1) on pages 21-22, DOI: 10.11646/zootaxa.5031.1.1, http://zenodo.org/record/545438
Aplysina caissara Pinheiro & Hajdu 2001
No full textAplysina caissara Pinheiro & Hajdu, 2001 (Figs. 1 A, 2, 3 A, Tab. I) Aplysina caissara, Pinheiro & Hajdu (2001: 145); Mothes et al. (2006: 76). Aplysina fistularis fulva sensu Mothes de Moraes (1987: 133). Non Aplysina fistularis (Pallas, 1766; a valid species). Aplysina fulva sensu Lerner (1996: 115). Non Aplysina fulva (Pallas, 1766; a valid species). Holotype: MNRJ 1988, rocky coast between Prainha beach and Brava beach (Costão do Navio, São Sebastião, SP, 23 º 50.067 ' S- 45 º 29.449 ' W), 6 m depth, E. Hajdu coll., 29 /I/ 1999. Paratypes: MNRJ 268, Ponta Recife, (São Sebastião, SP, 23 º 49.501 ' S - 45 º 24.796 ' W), 2 m depth, E. Hajdu coll., 22 /I/ 1996. MNRJ 578, southern side of Toque-Toque Island, (São Sebastião, SP, 23 º 51.209 ' S - 45 º 31.600 ' W), 11 m depth, E. Hajdu coll., 15 /VI/ 1997. MNRJ 1673, Ponta do Jarobá (São Sebastião, SP, 23 º 49.679 ' S - 45 º 25.278 ' W), 4.5 m depth, E. Hajdu coll., 22 /IV/ 1998. MNRJ 1989, 2013, rocky coast between Prainha beach and Brava beach (Costão do Navio, São Sebastião, SP, 23 º 50.067 ' S- 45 º 29.449 ' W), 6 m depth, E. Hajdu coll., 29 /I/ 1999. Additional material: MNRJ 5087, da Vila beach, left side, (Picinguaba, Ubatuba, SP), 2 m depth, R. N. Costa coll., 23 /X/ 2001. MNRJ 5287, (Arvoredo Island, SC), 7 m depth, E. Hajdu and C.B. Lerner coll., 19 /II/ 2002. MNRJ 5308, (Arvoredo Island, SC), 7 m depth, U.S. Pinheiro coll., 19 /II/ 2002. MNRJ 5284 (Arvoredo Island, SC), 7 m depth, E. Hajdu and C.B. Lerner coll., 19 /II/ 2002. MCN 0 383 (João da Cunha Island, Porto Belo, SC), 3 m depth, S.M. Pauls coll.. MCN 1034 (João da Cunha Island, Porto Belo, SC), 0.5 m depth, A.A. Lise coll., 22 /X/ 1977. MCN 1035 (João da Cunha Island, Porto Belo, SC), 0.5 m depth, A.A. Lise coll., 06/ XI/ 1981. MCN 2235, Saco da Mulata (Galé Island, Bombinhas, SC), 12 m depth, C.B. Lerner coll., 14 /II/ 1991. MCN 2278, small SW bay (Galé Island, Bombinhas, SC), 8 m depth, C.B. Lerner coll., 29 /III/ 1991. Diagnosis: Bright yellow live-colour and small (1-6 cm high) digits and/or fusiform processes topped by oscula. Description: Specimens can have few (3–4) or many digits (60–80), which are mostly erect. Digits can be single or anastomosed, cylindrical (fusiform or straight) or slightly volcaniform (rare), 1–6 cm high and 0.6–1.5 cm wide (Figs. 1 A, 2 A–B). Area coverage can be as large as 25 x 15 cm, but more often about 6 x 6 cm. Surface is finely conulose. Oscula are mostly apical (1.5–4 mm in diameters), but few lateral and smaller (ca. 1 mm in diameter) can occur. The colour is bright yellow in vivo, which turns into deep purple after preservation in alcohol. Consistency is soft and flexible Skeleton: Choanosome with a delicate and irregular network of spongin fibers. They have a bark with amber colour and thickness of 25–100 Μm (average 44 Μm), and black or amber pith with thickness varying between 11 and 81 Μm (average 16 Μm) (Figs. 2 C–E, Tab. I). TABLE I: Spongin fibres’ measurement data for Aplysina caissara Pinheiro & Hajdu, 2001 (in micrometers; S.D. = Standard Deviation and N = 30). Specimens Locality* Fibers Piths Distribution: Provisionally endemic from southern and southeastern Brazil (24–28 º S, Fig. 3 A). This area is known as the Paulista Biogeographic Province. Ecology: The species has a typically patchy distribution, being often very rare, but reaching considerable densities at a few spots, where specimens can be found every couple of meters. Its known depth distribution is from 0.5 to 12 m. Few specimens are found at very shallow depths (0.5–3 m) in places of somewhat restricted water flow, where temperatures may reach 28 º C. However, most are located in areas of large water circulation and intermittently exposed to the Central South Atlantic waters, with temperatures reaching a minimum around 13 º C (Pinheiro & Hajdu, 2001). Remarks: Among the Tropical South-western Atlantic Aplysina that possess digitiform processes, the species which most closely resembles A. caissara is A. fulva, known by its large morphologic variability along the Brazilian coast (cf. Pinheiro & Hajdu, 2001). However, A. caissara combines a bright yellow colour in life, the consistently small dimensions (digits 5 cm high), never possesses typically apical oscula, nor a comparably delicate reticulation of spongin fibres.Published as part of Pinheiro, Ulisses Dos S., Hajdu, Eduardo & Custódio, Márcio R., 2007, Aplysina Nardo (Porifera, Verongida, Aplysinidae) from the Brazilian coast with description of eight new species, pp. 1-51 in Zootaxa 1609 on pages 3-7, DOI: 10.5281/zenodo.17887
Haliclona (Reniera) chlorilla Bispo, Correia & Hajdu 2016
No full textHaliclona (Reniera) chlorilla Bispo, Correia & Hajdu, 2016 Tables 6, 7; Figs. 27A–C, 36K Synonymy and references: Haliclona (Reniera) chlorilla Bispo et al. (2016: 237). De la Cruz-Francisco & González-González (2016: 55). Type locality. Marechal Deodoro, AL, Brazil. Material examined. CNPGG-2192, Cayo Arcas reef (20.20512°N, - 91.96305°W), 0.5 m depth, coll. Diana Ugalde, 19 August 2018, CNPGG-2477, Yucalpeten lagoon (21.2630°N, 89.7062°W), 0.5 m depth, coll. Patricia Gómez, 17 July 2017. Distribution. Mexico (De la Cruz-Francisco & Gónzalez-Gónzalez 2016; current records), Brazil (Bispo et al. 2016). Remarks. Haliclona (R.) chlorilla is a shallow species inhabiting tyde pools, seagrasses or macroalgae and it is characterized by a repent morphology of delicate branches in dark green or black live color, and absence of any microscleres (Bispo et al. 2016). Haliclona (R.) chlorilla has been described for the Northeast of Brazil (Bispo et al. 2016). Recently, De la Cruz-Francisco & González-González (2016) recorded the species at the Lobos-Tuxpan reef system in the SGoM, extending the distribution of the species. Our record further extends the distribution of Haliclona (R.) chlorilla to the Campeche Bank in the SGoM.Published as part of Ugalde, Diana, Fernandez, Julio C. C., Gómez, Patricia, Lôbo-Hajdu, Gisele & Simões, Nuno, 2021, An update on the diversity of marine sponges in the southern Gulf of Mexico coral reefs, pp. 1-112 in Zootaxa 5031 (1) on pages 35-36, DOI: 10.11646/zootaxa.5031.1.1, http://zenodo.org/record/545438
Aplysina muricyana Pinheiro, Hajdu & Custódio, 2007, sp.n.
No full textAplysina muricyana sp.n. (Fig. 16 D, 17 C–F, 20, Tab. X) Aplysina sp. sensu Neves & Omena (2003) Holotype: MNRJ 6196, Laguna (Reserva Biológica do Atol das Rocas, RN) E. Hajdu, M.V. Oliveira and U. Pinheiro coll., 25 /VIII/ 2002. Paratypes: Reserva Biológica do Atol das Rocas (RN) - MNRJ 2139, Salão (ca. 03º 52 ' 52 '' S – 33 º 48 ' 51 '' W), 4 m depth, G. Muricy coll., 28 /II/ 1999. MNRJ 2168, Piscina do Barretão, 3 m depth, F. Moraes coll., 01/ III/ 1999. MNRJ 2173, Fenda (03º 51 ' 18.6 '' S – 33 º 47 ' 52.1 '' W), G. Muricy coll., 02/III/ 1999. MNRJ 6195, Laguna, E. Hajdu, M.V. Oliveira and U. Pinheiro coll., 21 /VIII/ 2002. MNRJ 6197, E. Hajdu, M.V. Oliveira and U. Pinheiro coll., 24 /VIII/ 2002. MNRJ 6198, Laguna, E. Hajdu, M.V. Oliveira and U. Pinheiro coll., 21 / VIII/ 2002. MNRJ 6199, Salão, E. Hajdu, M.V. Oliveira and U. Pinheiro coll., 30 /VIII/ 2002. MNRJ 6200– 6202, Fenda (03º 51 ' 20.1 '' S – 33 º 47 ' 50.2 '' W), E. Hajdu, M.V. Oliveira and U. Pinheiro coll., 25 /VIII/ 2002, voucher. MNRJ 6203–6204, Piscina das Rocas, E. Hajdu, M.V. Oliveira and U. Pinheiro coll., 24 /VIII/ 2002. MNRJ 6205, Laguna, E. Hajdu, M.V. Oliveira and U. Pinheiro coll., 25 /VIII/ 2002. MNRJ 6301, Piscina das Rocas, E. Hajdu, M.V. Oliveira and U. Pinheiro coll., 24 /VIII/ 2002. MNRJ 6364, Fenda (03º 51 ' 20.1 '' S – 33 º 47 ' 50.2 '' W), E. Hajdu, M.V. Oliveira and U. Pinheiro coll., 27 /VIII/ 2002. MNRJ 6663, Piscina das Âncoras (03º 52 ' 31.5 '' S – 33 º 48 ' 20.8 '' W), E. Hajdu, M.V. Oliveira and U. Pinheiro coll., 31 /VIII/ 2002. Additional material: Reserva Biológica do Atol das Rocas (RN) - MNRJ 4493, 4494, Salão (ca. 03º 52 ' 52 '' S – 33 º 48 ' 51 '' W), G. Neves coll., XI/ 1999. MNRJ 4502, Fenda, G. Neves coll., XI/ 1999. Diagnosis: Irregular polygonal tubes, laterally anastomosed, predominantly beige in vivo. Colour ranging from bright pale-yellow to dark reddish-brown. Description of the species: Specimens are composed of laterally anastomosed tubes with an irregular polygonal outline, in creeping groups of up to 45 tubes, with clusters having a maximum of 36 cm in length and 3 cm in width. The polygonal outline results from discrete edges extending upwards from the base of the sponge on its free sides (Figs. 17 C–F, 20 A–B). Some short tubes are projected from the base in varied directions. The surface is finely conulose. The sponge possesses large pseudoscula, frequently apical or pseudo-apical (eccentric), varying from 0.5 cm to 1 cm in diameter, small oscula on the tubes’ outer sides being also visible. In specimen MNRJ 2139, oscula have an iris-type diaphragm. The predominant colour in vivo is beige, specimens with green, brown, brownish-beige and red tinges being also common. After preservation in ethanol specimens vary from beige to brown. Consistency is soft. Skeleton: Choanosome with a delicate and irregular network of spongin fibers (Figs. 20 C–D) with amber colour bark 38–126 Μm thick (average 72 Μm) and a thick pith that can be black or amber 8 to 50 Μm (average 29 Μm; Fig. 20 E). The presence of spongin fibers wrapped and excavated by filamentous structures, possibly fungi, was observed in some specimens as in Aplysina pseudolacunosa sp.n. TABLE X: Spongin fibres’ measurement data for Aplysina muricyana sp.n. (in micrometers; S.D. = Standard Deviation and N= 30). Specimens Locality* Fibers Piths Thinnest Mean Thickest S.D. Thin- Mean Thickest S.D. nest Holotype Atol das Rocas, RN 51.3 75.2 117.3 12.3 11.3 17.4 27.6 3.4 MNRJ 6196 Paratype Atol das Rocas, RN 50.0 84.2 126.3 18.6 12.5 16.4 22.5 3.0 MNRJ 2139 Paratype Atol das Rocas, RN 52.5 73.8 91.3 9.0 12.5 19.3 28.8 3.8 MNRJ 2168 Paratype Atol das Rocas, RN 41.3 74.5 105.0 16.7 10.0 14.9 28.8 4.1 MNRJ 2173 MNRJ 4493 Atol das Rocas, RN 42.5 65.3 83.8 9.8 12.5 18.2 25.0 4.2 Distribution: Provisionally known only from the type locality, Atol das Rocas (RN, Brazil; Fig. 16 D). Ecology: All specimens were collected in shallow-waters at Atol das Rocas, inside large crevices, and the species is thus considered to be sciaphilous. Inside the atoll, depth of occurrence was limited to 5 m, but outside the atoll ring, specimens were seen down to 15 m. Specimens in darker areas were completely beige, and those more exposed to light, more intensely pigmented with darker colours, as a likely consequence of association with cyanobacteria. Etymology: The name of the species honours Dr. Guilherme Muricy, for his pioneering studies on the taxonomy of Atol das Rocas sponges, who also collected many of the specimens studied here. Remarks: The species which appear closest to A. muricyana sp.n are A. insularis and A. pseudolacunosa sp.n. described below. Another similar species is A. fistularis, which presents tubes of distinct morphology, never forming the large, frequently creeping clusters so frequently observed in the new species. Tubes in A. fistularis, albeit varied as regards length, as well as number and size of projections, were never seen to have a polygonal cross section. The possibility that A. muricyana sp.n. could be nothing but an ecomorph of a well established species appears quite unlikely, as dives performed on the outer ring of Atol das Rocas, down to 15m depth, failed to reveal any additional Aplysina species. Rather, the same A. muricyana sp.n. was present inside somewhat deeper crevices (10–15 m depth). Another species which also presents anastomosed tubes is A. insularis. However, A. insularis has soft and stout tubes, with yellow or brown colour in vivo turning black after preservation. In contrast, A. muricyana sp.n. has hard, much less stouter polygonal tubes, with variable colour in vivo and brown or beige colour after preservation. Comparison with A. pseudolacunosa sp.n. will be provided below.Published as part of Pinheiro, Ulisses Dos S., Hajdu, Eduardo & Custódio, Márcio R., 2007, Aplysina Nardo (Porifera, Verongida, Aplysinidae) from the Brazilian coast with description of eight new species, pp. 1-51 in Zootaxa 1609 on pages 36-39, DOI: 10.5281/zenodo.17887
Lissodendoryx (Ectyodoryx) corrugata Fernandez, Cárdenas, Bravo, Lôbo-Hajdu, Willenz & Hajdu, 2016, sp. nov.
No full textLissodendoryx (Ectyodoryx) corrugata sp. nov. (Tabs 2–3; Figs 4–7) Holotype. IZUA–POR 167, Isla Leucayec, Guaitecas Archipelago (44 º03’59.00”S / 73 º 41 ’00.38”W, Chile), 10–18 m depth, coll. E. Hajdu & R. Foley, 0 7 March 2005. Fragments from holotype deposited under MNRJ 8963 and RBINSc–IG 32232 –POR 8963. Paratype. MNRJ 17398, Punta Llonco, Comau Fjord, Chile (42 º 20 ’ 38.22 ”S / 72 º 27 ’ 25.26 ”W), <30 m depth, coll. G. Försterra, 0 3 January 2006. Diagnosis. Massive, ovoid Lissodendoryx (Ectyodoryx) with numerous sinuous short anastomosing projections over the entire surface resembling a cauliflower; apically microspined tylotes (108–204 / 4.8–6), acanthostyles (I. 252–358 / 8–16.8, II. 90 –158/ 7.5–12.5), and arcuate isochelae (I 28–40, II 16–24). Description. Massive oval shaped sponge (Figs 4 A–B; Figs 5 A–D), with numerous sinuous, short, anastomosing projections over the entire surface; resembling a cauliflower. The holotype is 4 cm long and 3 cm in high (in life) and the paratype is 3.8 cm and 3 cm, respectively. The paratype is relatively more compact. Simple oscula (diameter up to 0.3 cm, in vivo holotype), scattered and scarce. Colour in vivo beige, and in ethanol specimens are light beige. Their consistency is compressible, rather delicate, and the paratype is somewhat harder; texture slightly rough. Skeleton. The choanosomal skeleton is (sub)anisotropic (Fig. 6 A) or subisodictyal reticulation (Fig. 6 D). Larger acanthostyles form pauci- to multispicular ascending tracts (up to seven spicules across), reaching the sponge surface and piercing it by up to 300 µm. These acanthostyles also constitute secondary orthogonal tracts, one spicule long, and up to four in thickness (Figs 6 B, E). Smaller acanthostyles echinate the main choanosomal tracts, and the nodes of the reticulation. Tylotes are spread in the surface, often perpendicularly or obliquely (Fig. 6 C). Tracts are partially inserted in a spongin layer of fibrous appearance (Fig. 6 F). Two categories of arcuate isochelae are scattered all around in choanosome and ectosome, the smaller of which is more frequent. Subectosomal lacunae absent, but wide choanosomal cavities occur, roundish or variably ellipsoid, up to 2 mm in maximum diameter. Spicules. Megascleres (Tabs 2–3): (Sub)tylotes (Figs 7 A–B, I–J), straight, rather minutely microspined on both ends, which can be slightly aniso-tylote, elongated tyles only slightly swollen (elliptical), 108– 172 (25.3) – 204 / 4.8– 5.1 (0.3) – 6. Acanthostyles I (Figs 7 C–D, K–L), straight or slightly curved, stout, somewhat fusiform, base slightly constricted, regularly round, apex sharpening gradually; spines not so abundant, straight, up to 1.5 µm high, concentrated at and near the base, a few spicules (variably thick) are very lightly spined or smooth, 252– 313.5 (29.7) – 358 / 8– 13.5 (2.6) – 16.8. Acanthostyles II (Figs 7 E–F, M–N), mostly straight, with a swollen base up to 3 µm thicker than the shaft, gradually sharpening point; abundant spines, up to 5 µm high, straight, spread over shaft and base, 90– 126 (24.3) – 158 / 7.5– 10.3 (1.6) – 12.5. Microscleres (Tabs 2–3): Arcuate isochelae I (Figs 7 G, O), smooth, relatively thick shaft, alae slightly elongated, but relatively small, young forms with markedly reduced alae: 31– 34 (3.3) – 40. Arcuate isochelae II (Figs 7 H, P), same as isochelae I, but smaller, 16– 22 (2) – 29. The Sturges algorithm confirmed the occurrence of two size classes of isochelae. Specimen ectosomal tylotes (with microspined choanosomal acanthostyles: arcuate isochelae ends) I. main, II. echinating IZUA–POR 167 108– 162 – 204 / I. 252– 300 – 353 / 8– 14.7 – 16.8 I. 31.5– 35.6 – 40 holotype 4.8– 5.2 – 6 II. 90 – 128.2 – 158 / 9– 11.2 – 12.5 II. 16– 21 – 24 MNRJ 17398 158– 182 – 200 / I. 290– 326.6 – 358 / 8.5– 12.3 – 14.5 I. 28– 34 – 40 paratype 4.8– 5 – 5.2 II. 90 – 124 – 145 / 7.5– 9.4 – 10 II. 21 – 22.8 – 24 Ecology. The holotype was attached to a bunch of slender chitinous polychaete tubes (Family Spionidae), and the paratype was attached to a coral. Distribution. So far endemic from the northern sector of Chile’s fjord region, from its type locality at the Guaitecas Archipelago (44 ºS) to Comau Fjord (42 ºS). Etymology. The species is named ‘corrugata’ (Latin corrugatus = rugose) on account of its irregular, cauliflower-like surface. Remarks. Lissodendoryx (Ectyodoryx) corrugata sp. nov. is distinguished from Lissodendoryx (E.) spp. occurring in the SE Pacific, and in additional allied biogeographic provinces, as well as from L. (E.) ballena sp. nov. (described above) by its possession of two categories of arcuate isochelae combined with terminally microspined tylotes. The presence of little spines in the extremities of tylotes is shared with five species of Lissodendoryx (Ectyodoryx) considered here (Tab. 2); viz. L. (E.) anacantha, L. (E.) nobilis, L. (E.) patagonica, L. (E.) plumosa, and L. (E.) ramilobosa. This character may also be present in the genus’ type species, L. (Lissodendoryx) isodictyalis (Carter, 1882). A phylogenetic assessment of synapomorphies is needed to verify whether the current subgeneric arrangement, and its emphasis on presence vs. absence of echinating acanthostyles (van Soest, 2002 a), is more parsimonious than an alternative system with greater weighting given to the micromorphology of spicules.Published as part of Fernandez, Julio C. C., Cárdenas, César A., Bravo, Alejandro, Lôbo-Hajdu, Gisele, Willenz, Philippe & Hajdu, Eduardo, 2016, Lissodendoryx (Ectyodoryx) Lundbeck, 1909 (Coelosphaeridae, Poecilosclerida, Demospongiae) from Southern Chile: new species and a discussion of morphologic characters in the subgenus in Zootaxa 4092 (1) on pages 76-79, DOI: 10.11646/zootaxa.4092.1.4, http://zenodo.org/record/26611
Hajdu Gusztáv (1911-1976)
No full textHajdu Gusztáv (1911-1976) állatorvosdoktor, c. egyetemi tanár a Debreceni Állategészségügyi Intézet alapító igazgatója (1949-1972)
Lissodendoryx (Ectyodoryx) diegoramirezensis Fernandez, Cárdenas, Bravo, Lôbo-Hajdu, Willenz & Hajdu, 2016, sp. nov.
No full textLissodendoryx (Ectyodoryx) diegoramirezensis sp. nov. (Tab. 2; Figs 10–13) Holotype. IZUA–POR 169, Isla Diego Ramírez, southern Chile (56 ºS, off Cape Horn), ca. 2000 m depth, September 2002, bycatch from longline fisheries, Leg. A. Bravo. Fragment from holotype deposited under MNRJ 10884. Comparative material. Lissodendoryx (Ectyodoryx) anacantha (Hentschel, 1914) (ZMH S 2327, fragment from the holotype). Diagnosis. Seemingly erect Lissodendoryx (Ectyodoryx) with irregular surface, terminally microspined tylotes (223–252 / 7.2–9.6), acanthostyles (I. 435–602 / 24–31, II. 320–415 / 19–21, III. 220–242 / 14–17), arcuate isochelae with lateral alae bent towards the shaft (22–24), and sigmas (I. 45 –60, II. 18.6–25). Description. The holotype is incomplete and therefore imprecise to describe its gross morphology. It is seemingly erect, possibly stalked (Fig. 10 A), ca. 2 cm high and 0.4 cm thick. Surface rather hispid, irregular, bearing short projections (Fig. 10 B) and roundish openings (ca. 0.1 cm across), which are of doubtful oscular in function. A gross reticulation is apparent in the entire sponge under transmitted light in a stereo microscope (Fig. 10 C). Colour in life not reported, dried holotype beige. Consistency relatively compressible and delicate, texture slightly rough. Skeleton. Plumoreticulate with a slight degree of axial compression (Figs 11 A–B). Larger acanthostyles core main paucispicular tracts (approx. five spicules across) that are entirely echinated by another two distinct types of acanthostyles (Fig. 11 C). Some of the larger acanthostyles fan out from the main tracts, interconnecting them. Aniso-subtylotes are scattered at the surface, disposed at various angles to it (Fig. 11 D). Isochelae and sigmas are scattered in the ectosome and choanosome. There is no spongin enveloping the fibres and subectosomal lacunae are absent. Choanosomal cavities (ca. 50 µm in diameter) are uncommon, scattered and roundish. Spicules. Megascleres (Tabs 2 –4): Aniso-subtylotes to aniso-strongyles (Figs 12 A–B), straight, microspined ends, 223– 233.5 (10.2) – 252 / 7.2– 8.4 (1.3) – 9.6. Acanthostyles I (Figs 12 C–D), straight to slightly curved, stout and somewhat fusiform; roundish base, frequently narrower than the central portion of the shaft; gradually thinning point; surface with few straight spines (up to 2.5 µm), mainly over the basal third of the spicule, 435– 536 (52.8) – 602 / 24– 26.6 (2.4) – 31. Acanthostyles II (Figs 12 E–F), same overall morphology as the preceding category, but smaller, and bearing more spines, although the apical portion is also totally smooth, 320– 391 (29.2) – 415 / 19– 20 (1) – 21. Acanthostyles III (Fig. 12 H) straight to slightly curved; narrow roundish base; gradually thinning point; shaft completely covered with spines (moderately to abundantly), spines frequently straight and usually larger than those of the preceding categories, 220– 232.5 (10) – 242 / 14– 15 (1.1) – 17. Microscleres (Tabs 2 –4): Arcuate isochelae (Fig. 12 I), shaft gently curved, lateral alae elongated and curved towards the shaft as a claw, frontal alae simple, 22– 23.5 (1) – 24. Sigmas I (Fig. 12 J), contorted, smooth, with sharp ends, 45– 55.5 (4.9) – 60. Sigmas II (Fig. 12 K) same morphology as the preceding one, but smaller, 16.8– 20.8 (2.9) – 25. Ecology. Deep-water habitat (2000 m depth). Distribution. Currently only known from the type locality. Etymology. The species is named after its type locality. Remarks. Lissodendoryx (Ectyodoryx) diegoramirezensis sp. nov. is distinguished from Lissodendoryx (E.) spp. occurring in the SE Pacific, additional allied biogeographic provinces, as well as L. (E.) ballena sp. nov., L. (E.) corrugata sp. nov., and L. (E.) coloanensis sp. nov., mainly by its possession of three categories of acanthostyles, separable by their dimensions, morphology and placement in the skeletal architecture (Tab. 2; Figs 12 C–H). Lissodendoryx (Ectyodoryx) diegoramirezensis sp. nov. has arcuate isochelae of uncommon morphology, with lateral alae of both extremities curved towards the shaft (Fig. 12 I). Precisely this isochelae morphotype can be found in L. (E.) anacantha (Hentschel, 1914: p. 107, Taf. VII, Fig. 12), a species amply distributed around Antarctic and the Subantarctic Region, and in another Antarctic species, L. (Lissodendoryx) styloderma Hentschel, 1914 (Hentschel, 1914: p. 101, Taf. VII, Fig. 7). This latter species can be readily distinguished from the new species by its lack of sigmas, possession of styles in the ectosome, and acanthostyles of a single category only. However, the similarity of the isochelae of the new species and those seen in L. (E.) anacantha might indicate a closer affinity between both species, as they further share similar habit and additional spicule characteristics. Nevertheless, both species are considered distinct on the basis of the presence of a third category of acanthostyles in the new species, while its acanthostyles, as a rule, are also more densely spined or with spines more widespread over the shaft. Furthermore, L. (E.) anacantha has ectosomal megascleres that can be perfect styles (Fig. 13 C–D), and the smaller category of acanthostyles may bear secondary microspines over the main spines seen at the base of the spicule (Fig. 13 E–F). These characteristics of the acanthostyles have not been spotted in the holotype of L. (E.) diegoramirezensis sp. nov. (Fig. 11 C–H). The re-examination of the type material of L. (E.) anacantha (Fig. 13) confirmed the spicule set originally reported by Hentschel (1914), and subsequently recognized by Koltun (1964). Nevertheless, new measurements obtained from the holotype (Tab. 2) revealed that acanthostyles can be much thicker than reported originally (Hentschel, 1914), matching more closely the measurements reported by Koltun (1964). Given the data at hand, L. (E.) diegoramirezensis sp. nov. is considered well distinguished from allied forms, but it is suggested that study of additional samples of L. (E.) anacantha, such as those registered (but not described) by Burton (1932) from South Georgia, is important to verify if these two taxa are distinct, as hypothesised here.Published as part of Fernandez, Julio C. C., Cárdenas, César A., Bravo, Alejandro, Lôbo-Hajdu, Gisele, Willenz, Philippe & Hajdu, Eduardo, 2016, Lissodendoryx (Ectyodoryx) Lundbeck, 1909 (Coelosphaeridae, Poecilosclerida, Demospongiae) from Southern Chile: new species and a discussion of morphologic characters in the subgenus in Zootaxa 4092 (1) on pages 82-84, DOI: 10.11646/zootaxa.4092.1.4, http://zenodo.org/record/26611
Lissodendoryx (Ectyodoryx) coloanensis Fernandez, Cárdenas, Bravo, Lôbo-Hajdu, Willenz & Hajdu, 2016, sp. nov.
No full textLissodendoryx (Ectyodoryx) coloanensis sp. nov. (Tab. 2; Figs 8–9) Holotype. IZUA–POR 168, Bahia Nash, Isla Santa Inés, Francisco Coloane Marine Protected Area, Magellan Strait, Chile (53 ° 41 ’S / 72 ° 20 ’W), 20 m depth, coll. C.A. Cárdenas, May 2007. Fragment from holotype deposited under MNRJ 17608. Diagnosis. Globular Lissodendoryx (Ectyodoryx) composed of a dense mass of juxtaposed slender hollow tubes (ca. 0.5 mm in diameter each), which may anastomose; terminally microspined tylotes (150–198 / 4–5), acanthostyles (I. 190–300 / 7.2–9, II. 84 –115/ 6–8), and arcuate isochelae (I. 26 –31.2, II. 19–22). Description. Globular (Figs 8 A–B), 4 cm in diameter x 3 cm high; hispid surface (Fig. 8 C); body made up of a dense mass of juxtaposed small slender hollow tubes (ca. 0.5 mm in diameter each ‘fiber’), which may anastomose (Fig. 8 B); larger, simple openings (possibly oscula, up to 0.3 cm in diameter) are spread at the surface; colour in life beige, and in ethanol, lighter or darker beige; consistency rather compressible and delicate; rough texture. Skeleton. Sub-anisotropic reticulation (Fig. 9 A) of larger acanthostyles forming ascending pauci- to multispicular tracts (up to seven spicules across) in the choanosome, reaching the surface and piercing it by up to 200 µm. These acanthostyles also constitute secondary orthogonal tracts, one spicule long, and up to three in thickness (Fig. 9 B). Spongin in fibres is not apparent. These ascending spicule tracts can inter-cross or anastomose in the inner parts of the sponge, but are free from each other near the surface. Smaller acanthostyles echinate the main choanosomal tracts and the nodes of the reticulation. Tylotes are strewn at the surface, also tangentially (Fig. 9 C). Two kinds of arcuate isochelae occur throughout the choanosome and ectosome, the smaller category being the most abundant. Large choanosomal cavities are present, round or more elongated in section, up to 2000 µm long. Spicules. Megascleres (Tab. 2): Tylotes (Figs 9 D–E), straight, microspined at both ends, sometimes slightly aniso-tylote; tyles only slightly swollen and elongated, 150– 187. 2 (14) – 198 / 4– 4.7 (0.5)– 5. Acanthostyles I (Figs 9 F–G), straight to slightly curved, stout and somewhat fusiform; base slightly constricted, frequently bearing a subtle neck and discreet tyle, sometimes only irregularly round; apex sharpening gradually; spines (not abundant), up to 1.2 µm high, straight, concentrated on the basal portion of the spicule, a few spicules (variably thick) bear much less if any spines at all, 190– 267.5 (34.3) – 300 / 7.2– 8 (0.6) – 9. Acanthostyles II (Figs 9 H–I), frequently straight, base swollen (up to 3 µm thicker than the shaft); gradually sharpening apex; abundant spines up to 3 µm high, straight, spread all over the spicule, 84– 100 (10) – 115 / 6– 7. 5 (0.6) – 8. Microscleres (Tab. 2): Arcuate isochelae I (Fig. 9 J), shaft curved, smooth, relatively thick; alae small but slightly elongated, young forms slender with markedly reduced alae, 25– 29. 3 (2) – 31. Arcuate isochelae II (Fig. 9 K), same as the preceding one, but smaller, 19– 19.7 (0.9) – 22. The Sturges algorithm confirmed the occurrence of two size classes of isochelae. Ecology. The sponge was growing on rocky substrate, over tubes of the polychaete Chaetopterus variopedatus, and next to Tedania sp. (Tedaniidae) and another unidentified haplosclerid sponge. Distribution. Provisionally endemic from its type locality at Isla Santa Inés (Magellan Strait, Chile). Etymology. The specific epithet is derived from the new species’ occurrence in Chile’s Francisco Coloane Marine Protected Area. Remarks. Lissodendoryx (Ectyodoryx) coloanensis sp. nov. is distinguished from Lissodendoryx (E.) spp. occurring in the SE Pacific, additional allied biogeographic provinces, as well as L. (E.) ballena sp. nov., due to its two categories of arcuate isochelae combined with terminally microspined tylotes (Tab. 2). The spicule set of L. (E.) coloanensis sp. nov. is rather similar to that of L. (E.) corrugata sp. nov. (Fig. 9 and Fig. 7, respectively). Nevertheless, the former can be distinguished by its shorter and more slender acanthostyles (Tab. 2), besides a relatively distinct outer morphology and consistency (Fig. 8 e Figs 4–5, respectively).Published as part of Fernandez, Julio C. C., Cárdenas, César A., Bravo, Alejandro, Lôbo-Hajdu, Gisele, Willenz, Philippe & Hajdu, Eduardo, 2016, Lissodendoryx (Ectyodoryx) Lundbeck, 1909 (Coelosphaeridae, Poecilosclerida, Demospongiae) from Southern Chile: new species and a discussion of morphologic characters in the subgenus in Zootaxa 4092 (1) on pages 79-82, DOI: 10.11646/zootaxa.4092.1.4, http://zenodo.org/record/26611
Hymedesmia (Hymedesmia) humboldti Salani & Willenz & Fernandez & Hajdu 2022, sp. nov.
No full textHymedesmia (Hymedesmia) humboldti sp. nov. (Figure 5; Table 1) Material examined. Holotype ― MNRJ 12078 (Vouchers: RBINS – IG 32240 – POR 12078, MHNG 85520), Punta Coles, Ilo, Moquega Region, Peru (17.7S, 71.3808W), depth 13 m, coll. Y. Hooker, Ph. Willenz & M. Rios (06/ XI/2008). Paratype ― MNRJ 12144 (Vouchers: RBINS – IG 32240 – POR 12144, MHNG 85587), Matarani, Bahia Uncupita, Arequipa Region, Peru (16.8370 S, 72.291W), depth 9 m, coll. Y. Hooker & U. Zanabria (27/ XI /2008). Additional material. IZUA – POR 175 (voucher and slides deposited as MNRJ 9254), Punta Choros, La Serena, Chile (29.8166S, 71.28333 W), depth 13 m, coll. E. Hajdu & G. Lobo-Hajdu (21/V/2005). MNRJ 9283, Mejillones Peninsula, Antofagasta, Chile (23.083 S, 70.433 W), depth 13 m, coll. E. Hajdu & G. Lobo-Hajdu (24/V/2005); MNRJ 14875, 14879, Isla Damas, Punta Choros, Chile (29.2377S, 71.5197W), depth 10 m, coll. D. Schories (21/ XI/2009). Type locality. Punta Coles, Ilo, Moquega Region, Peru (17.7 S, 71.3808 W). Diagnosis. Hymedesmia (H.) reddish orange in situ, with visible circular porefields and oscules. Acanthostyles I partially spined (153–320 × 6–17 µm), acanthostyles II entirely spined (55–150 × 5–15 µm), (aniso)strongyles (128–275 × 2–8 µm), and arcuate chelae (16–25 µm), abundant at the surface. Description (Fig. 5A–B). Thinly encrusting sponge (0.7–1.5 mm thick) (Fig. 5A). The largest individual (IZUA–POR 175) covered an area of 640 cm 2. Surface smooth, completely covered by small, circular porefields (≈ 2 mm in diameter). Some oscules scattered on the surface (0.7–3.0 mm diameter, Fig. 5B). Consistency very soft and fragile. Color in life is reddish orange (Fig. 5A–B), turning to beige when preserved in ethanol. Skeleton (Fig. 5C). Ectosomal skeleton with anisostrongyles forming bundles extending from surface to substrate. Porefield skeleton formed by many unitary strongyles in a mesh, organized as a conical structure. Subectosomal canals less than 0.8 mm in diameter. Subectosomal and choanosomal skeletons overlapping, composed of typical hymedesmioid structure, consisting of a basal layer of spongin with acanthostyles I and II erect on the substratum.Acanthostyles I support the ectosome without piercing it. Isochelae form a scattered layer at the surface, with some found in the choanosome. Incubated larvae present in MNRJ 9524 (≈ 300 µm diameter). Spicules (Figs 5D–J; Table 1). [Only holotype measurements presented here; for additional data see Table 1]. Ectosomal anisostrongyles (Figs 5F–H), smooth and straight (Fig. 5F), with rounded and mucronate ends (Fig. 5G–H), 128– 167.9 –186 (± 13.4) × 2.7– 3.8 –5.4 (± 0.6) × 2.7– 3.7 –4.7µm (tyle). Choanosomal acanthostyles I (Fig. 5D), acerate tips tapering gradually, rounded base, shaft slightly curved, with spines occupying the basal two thirds of its length, spines mostly slightly curved, those of the base larger than those of the shaft, 153– 215.6 –283 (± 37.2) × 5– 11.3 –13 (± 1.4) µm. Choanosomal acanthostyles II (Fig. 5E), straight, tapering gradually, mucronate tip and rounded base, spines spread all over, 88– 107.1 –128 (± 8.7) × 5– 8.3 –10 (± 0.9) µm. Arcuate chelae (Fig. 5I–J), one free spatulate ala and two lateral alae semi-fused with the shaft, which is characteristically curved, bow shaped, 19– 21.8 –24 (± 1.3) × 2.8– 2.9 –3.1 (± 0.1) µm. Ecology. The sponge was epibiont on dead cirripeds, bryozoans, and serpulid polychaetes at 9–13 m depth. Distribution. Known from Arequipa and Moquega regions in Peru, and from central-northern Chile (Antofagasta and Punta Choros), spanning the latitudes 16.84º to 29.24º S. Etymology. The specific epithet “ humboldti ”, used as a noun in apposition, refers to the Humboldt current flowing north along most of the Chilean and Peruvian coasts, including all the localities the species was recorded from. Remarks. This species is quite similar to H. (H.) peruana sp. nov., but has somewhat larger ectosomal tornotes, only two categories of acanthostyles, and more pronouncedly curved chelae concentrated in the ectosome.Published as part of Salani, Sula, Willenz, Philippe, Fernandez, Julio C. C. & Hajdu, Eduardo, 2022, Three new Hymedesmia Bowerbank, 1864 (Demospongiae, Poecilosclerida Hymedesmiidae) from the Southeast Pacific (Peru and Chile), pp. 217-240 in Zootaxa 5165 (2) on page 224, DOI: 10.11646/zootaxa.5165.2.4, http://zenodo.org/record/683176
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