162,288 research outputs found
Namanereis gesae Fiege & Van Damme
No full text<i>Namanereis gesae</i> Fiege & Van Damme <p> <i>Namanereis gesae</i> Fiege & Van Damme, 2002 Ecology: FW</p> <p>Distribution: AT</p> <p>Habitat: OS, SB</p>Published as part of <i>Glasby, Christopher J., Timm, Tarmo, Muir, Alexander I. & Gil, João, 2009, Catalogue of non-marine Polychaeta (Annelida) of the World, pp. 1-52 in Zootaxa 2070</i> on page 12, DOI: <a href="http://zenodo.org/record/187085">10.5281/zenodo.187085</a>
Harmothoe mariannae Barnich & Fiege 2009, n. sp.
No full text<i>Harmothoe mariannae</i> n. sp. <p>(Figs. 3; 26A–J)</p> <p> <i>Type material</i>. <i>H. mariannae</i> n. sp.: holotype (cs in three fragments), SMF 17290, "Johan Ruud" St. 482, 69°52.36’N 30°08.09’E, N Norway, Varangerfjord, Bøkfjord Kjelmsøy lykt, 10 May 2006, epibenthic sledge, 251 m, leg. & ded. C. d’Udekem d’Acoz.</p> <p>Paratype (cs in two fragments), SMF 17293, Vigdis 1999, St. 17-1, 30 May 1999, 61°22'52.84'' N, 02°06'37.19'' E, 280 m, ded. A. Sikorski.</p> <p> <i>Diagnosis</i>. Anterior pair of eyes dorsolateral at widest part of prostomium. Elytral margin and adjacent surface papillate, papillae long at outer lateral margin, becoming shorter towards posterior margin; surface with conical microtubercles; macrotubercles conical to low, globose, scattered in a row near posterior margin.</p> <p> <i>Description</i> (based on holotype).</p> <p>Body with 36 segments. At anterior end (Fig. 26A), prostomium bilobed, with distinct cephalic peaks; ceratophore of median antenna in anterior notch, lateral antennae inserted ventrally, styles of antennae papillate, tapering; anterior pair of eyes situated dorsolaterally at widest part of prostomium, posterior pair dorsally near hind margin of prostomium; palps papillate, tapering.</p> <p>Tentaculophores inserted laterally to prostomium, each with two notochaetae and a dorsal and ventral tentacular cirrus, styles of cirri papillate, tapering. Second segment with first pair of elytra, biramous parapodia, and long buccal cirri. Following segments with tapering, short, slightly papillate ventral cirri.</p> <p>Fifteen pairs of elytra, covering dorsum, on segments 2, 4, 5, 7, then on every second segment to 23, 26, 29, 32, last four segments cirrigerous; elytral margin and adjacent surface papillate, papillae long at outer lateral margin, becoming shorter towards posterior margin; surface with conical microtubercles; macrotubercles conical to low, globose, scattered in a row near posterior margin. (Fig. 26B,C). Cirrigerous segments with distinct dorsal tubercles; dorsal cirri with cylindrical cirrophore, style papillate, tapering.</p> <p>Parapodia biramous; notopodia with elongate acicular lobe; neuropodia with elongate prechaetal acicular lobe with long, digitiform supra-acicular process; neuropodial postchaetal lobe shorter than prechaetal lobe, rounded; tips of noto- and neuroacicula penetrating epidermis (Fig. 26D). Notochaetae stouter than neurochaetae, with distinct rows of spines and blunt tip (Fig. 26E,F); neurochaetae with distinct rows of spines, upper group bidentate with short, stout secondary tooth, lower group unidentate (Fig. 26G–J).</p> <p> <i>Measurements</i>. Holotype (cs), SMF 17290 (Fig. 26A–J): L 16 mm, W 4 mm for 36 segments. Paratype, SMF 17293 (cs): L 13 mm, W 4 mm for 33 segments.</p> <p> <i>Remarks. Harmothoe mariannae</i> <b>n. sp.</b> is similar to <i>H. vesiculosa</i> Ditlevsen, 1917, but in this species elytra show shorter marginal papillae and macrotubercles are smaller and arranged in a dense row near the posterior margin. Confusion might also be possible with <i>H. multisetosa</i> Moore, 1902 from the Northeast Pacific. Here elytra have shorter marginal papillae, macrotubercles are not only present near the posterior margin, but also scattered on the surface, and microtubercles are conical to pointed (cf. Moore 1902 and Pettibone 1953).</p> <p> <i>Distribution.</i> Northeast Atlantic, from northern Norway to the northern North Sea.</p> <p> <i>Habitat</i>. Unknown, in 251 to 280 m.</p> <p> <i>Etymology</i>. The species is named after Marianne Barnich-Brimaire for her continuous support and interest in our work.</p>Published as part of <i>Barnich, Ruth & Fiege, Dieter, 2009, Revision of the genus Harmothoe Kinberg, 1856 (Polychaeta: Polynoidae) in the Northeast Atlantic, pp. 1-76 in Zootaxa 2104 (1)</i> on pages 54-56, DOI: 10.11646/zootaxa.2104.1.1, <a href="http://zenodo.org/record/5315428">http://zenodo.org/record/5315428</a>
Diversity of the genus Terebellides (Polychaeta: Trichobranchidae) in the Adriatic Sea with the description of a new species
No full textBased on specimens collected during the sampling campaigns in the Northern Adriatic from 2003–2010, the diversity of
genus Terebellides (Polychaeta; Trichobranchidae) was studied and three species are reported for the Northern Adriatic
Sea: Terebellides gracilis Malm, 1874, Terebellides mediterranea spec. nov., and Terebellides stroemii Sars, 1835. Terebellides
stroemii was the only species previously reported from the area. Terebellides gracilis is reported for the first time
for the Mediterranean Sea and its geographical distribution is extended south. Terebellides mediterranea spec. nov., is
characterised by the presence of long notopodia and notochaetae in the first thoracic chaetiger. These three species are
compared to other Terebellides species described or reported from North Atlantic waters, and a key to Terebellides species
of the North East Atlantic and Mediterranean is provided
Malmgreniella lilianae Pettibone 1993
No full textMalmgreniella lilianae Pettibone, 1993 (®gure 1A±J) Malmgreniella lilianae Pettibone, 1993: 59, ®gure 38.Published as part of Barnich, R. & Fiege, D., 2001, Mediterranean species of Malmgreniella Hartman, 1967 Polychaeta: Polynoidae: Polynoinae), including the description of a species, pp. 1119-1142 in Journal of Natural History 35 on page 112
[Report to Chief J. E. Curry, by an unknown author #1]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
[Report to Chief J. E. Curry, by an unknown author #2]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
Sosane brevibranchiata Imajima, Reuscher & Fiege, 2013, sp. nov.
No full textSosane brevibranchiata sp. nov. (Figs. 7 A–J; 16 D) Specimens examined. Holotype: NSMT-Pol. H 564, Bungo Channel, 32 °43.0'N, 132 ° 32.3 'E – 32 ° 42.9 ’N, 132 °32.0'E, 84–99 m, KT 99 - 18, St. DG- 1, 12.1999, (1 cs). Paratype: NSMT-Pol P 565, Off Tsushima Island, 34 ° 15.1 'N, 130 °15.0'E – 34 °15.0'N, 130 ° 14.9 'E, 100 m, Soyo-maru, SO 08-D 5, 7.2008, (1 af). Description. Length 10 mm, width 1 mm. Prostomium without glandular ridges, with one pair of eyespots (Fig. 7 A). Buccal tentacles without groove, smooth. Lower lip slightly crenulated (Fig. 7 B). Four pairs of cirriform branchiae (Fig. 7 C); 3 pairs of branchiae in transverse row in segment II, 1 pair of branchiae in segment IV; branchial groups separated by wide median gap; branchiae of segment II in median position of transverse row, branchiae of segment III in outermost position of transverse row, branchiae of segment IV in innermost position of transverse row, branchiae of segment V emerging next to notopodia of segment IV (Fig. 16 D); branchiae of transverse row with ventral tufts of cilia, annulated (Fig. 7 D); posterior branchiae much shorter, without cilia. Chaetae in segment II of same length and thickness as following notochaetae (Fig. 7 B, C). Notopodia with limbate capillary notochaetae from segment III, present in 15 segments. Notopodia in third-to-last thoracic unciniger elevated, basally inflated, apically conical, not connected by dorsal ridge (Fig. 7 E, F); notochaetae of modified unciniger in fan-like arrangement on convex side of notopodia, with hirsute tips (Fig. 7 G). Neuropodial tori with uncini from segment VI, present in 12 thoracic uncinigers. Cirri and papillae in thoracic parapodia absent. Continuous ventral shields present to thoracic unciniger 10. Two intermediate uncinigers. Ten abdominal uncinigers. Rudimentary notopodia and glandular pads in intermediate and abdominal uncinigers absent. Pinnules without cirri or papillae. Pygidium with terminal anus and one pair of short ventrolateral digitiform anal cirri (Fig. 7 H). Thoracic and abdominal uncini with crest of numerous teeth above rostral tooth and basal prow (Fig. 7 I, J). Remarks. Sosane brevibranchiata sp. nov. differs from the other species of Sosane sensu stricto, S. jirkovi, S. occidentalis, and S. sulcata, by the rudimentary 4 th pair of branchiae and the large gap between the groups of branchiae. The ventral tufts of cilia in the first 3 pairs of branchiae and their distinct annulation have also been observed in other species of the genus Sosane, i.e., Sosane uebelackerae sp. nov. (see below), and other genera, e.g., Anobothrus (see above). The ciliation is probably a juvenile character. Distribution. Bungo Channel between Kyushu and Shikoku, and off Tsushima Island in the Korea Strait, in 84– 100m.Published as part of Imajima, Minoru, Reuscher, Michael G. & Fiege, Dieter, 2013, Ampharetidae (Annelida: Polychaeta) from Japan. Part II: Genera with elevated and modified notopodia, pp. 137-166 in Zootaxa 3647 (1) on pages 149-150, DOI: 10.11646/zootaxa.3647.1.7, http://zenodo.org/record/22427
Namanereis pilbarensis Glasby & Fiege & Damme 2014, SP. NOV.
No full textNAMANEREIS PILBARENSIS SP. NOV. <p>(FIGS 1A–C, 2A–G, 3A–G)</p> <p> <i>Specimens examined</i></p> <p>Holotype: Australia, Pilbara region, Site PSS330, Duffers, Ashburton River catchment, 23°47.27′S, 117°48.41′E, 298 m asl, approx 25 km north of Pingandy Road on the Ashburton Downs – Meekatharra Road, coll. M. Scanlon & J. Cocking, 21.vii.2004 (WAM V8206). Paratypes: Australia, Pilbara region, Site PSS016, Robe, Onslow Coast Basin, 21°34.88′S, 115°52.23′E, 54 m asl, bore on Yarraloola Station, coll. M. Scanlon & J. Cocking, 14.xi.2002, two specimens (NTM W19176), one specimen (NTM W25486), one specimen (NTM rated with single terminal and seven subterminal teeth. Notochaetae absent. Neurochaetae in type C arrangement as defined by Glasby (1999). Supraneuroacicular falcigers of chaetiger 10 with blades about 4.9 times longer than width of shaft head, blades finely serrat- ed, seven to 11 teeth. Subacicular neurochaetae include heterogomph falcigers, heterogomph spinigers, and heterogomph pseudospinigers.</p> <p>W25487); Site PSS309, Wickham Well, De Grey River catchment, 22°2.27′S, 120°35.24′E, 410 m asl, approx. 50 km north-west of Noreena Downs Homestead, coll. M. Scanlon & J. Cocking, 15.vii.2004, four specimens, few plus headless fragments (SMF 22369, 2 cs and fragments; SMF 22370: SEM stub 1203, 1 cs; SMF 22371: SEM stub 1204, 1 cs); Site FMG13, Dandy Well, De Grey River catchment, 22°11.55′S, 119°53.22′E, 491 m asl, Bonney Downs Station, well located to creekline, coll. M. Scanlon & J. Cocking, 12.iii.2005, one specimen (SMF 22372: SEM stub1202, 1 cs–p).</p> <p> <i>Type locality</i></p> <p>Duffers, Ashburton River catchment, Pilbara, Australia.</p> <p> <i>Etymology</i></p> <p>Species name based on region of occurrence.</p> <p> <i>Diagnosis</i></p> <p> Prostomium not cleft anteriorly. Antennae cirriform. Eyes absent. Three pairs of tentacular cirri. Jaws ser- <i>Description</i></p> <p> Body elongate, uniform width along most of body, slightly tapering over far posterior body (Fig. 1A, C). Dorsal side convex, ventral side flattened. Colour in alcohol specimens yellow-white, epidermal pigment absent; in life semitransparent (Fig. 1A). Holotype cs, 10.5 mm long, 0.9 mm wide at chaetiger 10 including parapodia and chaetae, 78 chaetigers. Paratypes range from 4.4– 4.6 mm long, 0.45–0.50 mm wide, 30–36 chaetigers (<i>N</i> = 3).</p> <p>Prostomium subtriangular, slightly wider than long with widest part near posterior end; anterior end entire without cleft, shallow dorsal depression present (Fig. 1B). One pair of antennae inserted over inner-mid palps; cirriform, extending to level with or just beyond tip of palps. Palps massive, biarticulate. Eyes absent (Fig. 2A, B).</p> <p>Peristomium with three pairs of tentacular cirri with indistinct cirrophores; smooth to slightly wrinkled cirrostyles. Anterodorsal and posterodorsal cirri of about same length, anteroventral slightly shorter. Posterodorsal cirri extending to chaetiger 2 (Fig. 2A). Pharynx retracted in holotype, everted in some paratypes. Jaws of paratypes serrated with single terminal tooth and about seven subterminal teeth; proximal-most ones ensheathed (Figs 2C, 3G).</p> <p>Parapodia with conical acicular neuropodial ligule. Dorsal cirri cirriform, increasing in length posteriorly, half length of acicular neuropodial ligule anteriorly, about equal length of acicular neuropodial ligule posteriorly. Ventral cirri anteriorly subulate about twothirds length of neuropodial ligule, posteriorly cirriform and about half length of neuropodial ligule (Figs 2A, D, 3A, B).</p> <p>Notochaetae absent. Neurochaetae in type C arrangement, i.e. supraneuroacicular chaetae consist of one sesquigomph spiniger in postacicular fascicle and one heterogomph falciger in preacicular fascicle. Subneuroacicular fascicle in postacicular position comprising two heterogomph falcigers and one to two distally bifid heterogomph pseudospinigers (rarely heterogomph spinigers) (Figs 2D, F, 3C–F).</p> <p>Supraneuroacicular sesquigomph spinigers with boss about 1.8 times length of collar. Supraneuroacicular falcigers of chaetiger 10 with blades about 4.9 times longer than width of shaft head, finely serrated, eight teeth (Fig. 2E). Subneuroacicular falcigers of chaetiger 10 with very finely serrated blades, nine to ten teeth, about 5.1 times longer than width of shaft.</p> <p>Pygidium tripartite, with small subpointed dorsal lobe and two larger ventral lobes bearing pair of smooth, cirriform anal cirri, equal in length to two to three times the width of pygidium. Anus terminal (Fig. 2G).</p> <p> <i>Remarks</i></p> <p> <i>Namanereis pilbarensis</i> sp. nov. was first discovered by Scanlon <i>et al</i>. (2006), identified tentatively as an ‘undescribed marine polychaete’. It can be distinguished from all other members of the genus by having distally bifid heterogomph pseudospinigers. It may be distinguished from other groundwater <i>Namanereis</i> species by the combination of jaws with a single terminal tooth and series of subterminal teeth (the typical nereidid condition) and relatively few (seven to 11) serrations on the supraneuroacicular falcigers (Table 1). <i>Habitat</i></p> <p>Bore holes in cattle pastoral areas intermittently flowing river catchments in the Pilbara, 54–491 m asl, salinity 0.5–1.5 ppt, temperature 28–31 °C.</p> <p> <i>Distribution</i></p> <p>Pilbara, north-west Australia.</p>Published as part of <i>Glasby, Christopher J., Fiege, Dieter & Damme, Kay Van, 2014, Stygobiont polychaetes: notes on the morphology and the origins of groundwater Namanereis (Annelida: Nereididae: Namanereidinae), with a description of two new species, pp. 22-37 in Zoological Journal of the Linnean Society 171 (1)</i> on pages 24-26, DOI: 10.1111/zoj.12130, <a href="http://zenodo.org/record/5305715">http://zenodo.org/record/5305715</a>
Namanereis Glasby & Fiege & Damme 2014
No full textHABITATS BY <i>NAMANEREIS</i> <p> In general, the colonization of subterranean habitats by stygobitic taxa from marine or freshwater epigean ancestors can occur in different ways and often at different times. These often ancient (Gondwanan) colonizations and fragmentations in stygobitic taxa lead to a number of current biogeographical disjunctions (e.g. Tethyan distribution patterns) explained by vicariances (e.g. crustaceans; Stock, 1993). In crustacean isopods, Wägele (1990) reviewed two colonization pathways for stygobitic isopods, one from coastal groundwater and one from surface waters. Holsinger (1994) sug- gested three pathways for amphipods, one from epigean freshwater ancestors (limnostygobionts) and two possible scenarios for marine/brackish ancestors (thalassostygobionts) by marine regressions and land uplift or adaptive shifts during fluctuating sea levels. The latter scenario is linked with a Tethyan colonization (Holsinger, 1994). In stygobitic copepods, also a group of marine origin, several lineages colonized groundwater independently as a result of multiple invasions; several went through an epigean freshwater phase before entering groundwater (e.g. Galassi, 2001), but several colonized directly from the sea (Boxshall & Jaume, 2000; Galassi <i>et al</i>., 2009). What is the scenario for this particular lineage of polychaetes?</p> <p> Although some of the similarities amongst groundwater species may be attributable to convergence related to adaptation to a similar habitat, the major morphological difference (viz. bifid vs serrated jaws; Table 1) between groundwater species might have an historical explanation. The Arabian region including Socotra (derived from the Afro-Arabian Plate) and the Caribbean have the highest diversity of groundwater namanereids in the world. The bifid-jawed species are found at disjunct localities, from Socotra Island westward to the Caribbean and Central America; by comparison, the serrated-jawed species are more widely distributed from the Caribbean (Sint Eustatius and Jamaica) through Socotra (Abd al Kuri) eastward to Fiji and New Zealand (Fig. 8; Table 1). It seems therefore that the two differently jawed species living on the Socotra Archipelago may not be closely related: the serrated-jawed forms, with the exception of <i>N. sublittoralis</i>, were all connected by a relatively short length of Tethyan coastline in the Late Jurassic just prior to the breakaway of Gondwana from Pangaea, so it is conceivable that a single colonization event occurred, followed by speciation as a result of the fragmentation of Gondwana. By comparison, the Afro- Caribbean distributed bifid-jawed species appear to be more recent, possibly Cretaceous. At this time the Proto- Caribbean Sea was still connected with the Tethys Sea, allowing for the possibility of a widespread marine ancestor – from north-east Africa to the western Caribbean – to invade the land in a second colonization event. Speciation may have occurred within the bifid-jawed group around the time of the closure of Tethys Sea with the collision of African and Arabian Plates with Eurasia during the Miocene about 20 Mya [e.g. Glasby, (2005)]. This also corresponded with the emergence of the Canary Islands. Cenozoic speciation of the bifid-jawed species would correspond to geological links in Socotra – separation between <i>N. socotrensis</i> sp. nov. from the northern coast of Socotra Island and <i>N. araps</i> from Oman, which seem to share a common ancestor, corresponds with the original limestone deposits in which these animals are found. Until the Miocene (<i>c</i>. 18 Mya), Socotra was not an island but geologically part of southern Oman (Dhofar Region), and both regions have the same large Late Cretaceous/ Palaeocene/Eocene karstic limestone deposits until then and most areas were under shallow epicontinental seas until the end of the Eocene (see Cheung & DeVantier, 2006 for overview and references). In fact, it is the same suite of tectonic events that caused the closure of the Tethys Sea, which separated the Socotra Archipelago from the mainland and resulted in uplift of the northern and southern flanks of the Gulf of Aden.</p> <p> The Gondwanan group includes the new species from Pilbara, north-west Australia. The Pilbara is thought to be very old, having remained more or less emergent since the Proterozoic (> 545 Mya); it is home for several ancient (probably endemic) freshwater lineages of amphipods, isopods, copepods, and ostracods, which do not occur in the adjacent regions that were inundated by the sea in the Cretaceous and Eocene (Eberhard, Halse & Humphreys, 2005; Humphries, 2008). The new species of <i>Namanereis</i> from the Pilbara is likely to belong to this same ancient assemblage. It is important to note that the step from marine to freshwater in <i>Namanereis</i> was taken through the subterraneous route by more than half of the species (12 out of 17), although not all. The diversity in ecology in non-groundwater species (Glasby, 1999; Williams, 2004), ranging from the intertidal zone to leaf-litter, suggests that the colonization of land might not have been one simple event with subsequent radiation. We should note here that for such ancient (e.g. Mesozoic) groups, the distribution in terrestrial aquatic ecosystems may have been very different from today, as continental aquatic habitats were completely different (e.g. much more oligotrophic) and only became similar to those we know today near the end of the Palaeogene in the Cenozoic (e.g. Ponomarenko, 1996). It means that some species might have had wider distributions in epigean oligotrophic systems, and that the hyporheic or karstic fissures could also function as refuge habitats.</p> <p> Perhaps a colonization history of <i>Namanereis</i> can be distilled from the range of current habitats: from the littoral/intertidal zone, through entrapment into land-locked fluctuating brackish-water/freshwater systems (e.g. freshwater−brackish-water interface in coastal caves in karstic regions), in analogy with thalassostygobitic amphipods and copepods (cf. Holsinger, 1994; Galassi, 2001). Such a scenario could explain the presence of <i>Namanereis</i> in caves at higher elevations, such as <i>N. gesae</i> in a cave at 700 m on Abd al Kuri, or <i>N. cavernicola</i> in Mexico, which were originally at sea level, yet uplifted later. This scenario is plausible for <i>Namanereis</i> species occupying orogenic (uplifted) terranes. The latter would imply a relatively ‘direct’ initial colonization, and then further colonization of other habitats by run-off. An alternative hypothesis, or possibly a second parallel scenario, would be, as in several stygobitic crustaceans, that these polychaetes entered the groundwater in two steps: from marine environments to epigean freshwater habitats from fluctuating brackish/freshwater coastal environments such as coastal lagoons or mangroves and later taking refuge in groundwater (hyporheic, caves) through run-off. The scenario is plausible for species occupying ancient cratons, like the two new species described here. Again, such scenarios are speculative and perhaps hard to build on biogeography, ecology, and morphology, yet the current lack of a molecular framework in <i>Namanereis</i> should not be an obstacle for exploring hypotheses on their colonization history and evolution. Whether the venture into freshwater and anchialine habitats by <i>Namanereis</i> happened in a single colonization event that pre-dates the break-up of Gondwana (Glasby & Timm, 2008) or involved at least two independent events separated by millions of years (present study) remains unanswered. The two hypotheses present very different scenarios for evolution within the group, and could presumably be tested by application of molecular clock methods.</p>Published as part of <i>Glasby, Christopher J., Fiege, Dieter & Damme, Kay Van, 2014, Stygobiont polychaetes: notes on the morphology and the origins of groundwater Namanereis (Annelida: Nereididae: Namanereidinae), with a description of two new species, pp. 22-37 in Zoological Journal of the Linnean Society 171 (1)</i> on pages 33-34, DOI: 10.1111/zoj.12130, <a href="http://zenodo.org/record/5305715">http://zenodo.org/record/5305715</a>
Still digging: Advances and perspectives in the study of the diversity of several sedentarian annelid families
No full textSedentarian annelids are a diverse and heterogeneous group of marine worms representing more than 8600 species gathered in ca. 43 families. The attention brought to these organisms is unevenly distributed among these families, and the knowledge about them sometimes scarce. We review here the current knowledge about the families Acrocirridae, Cirratulidae (including Ctenodrilidae), Cossuridae, Longosomatidae, Paraonidae, and Sternaspidae in terms of biodiversity as well as the evolution of the taxonomy and systematics of each group. We present the challenges faced when studying these organisms and compare methodologies across groups and perspectives in future research
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