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Oesophagotrema mediterranea n. gen., n. sp. (Platyhelminthes, Digenea, Zoogonidae), parasite of the needlefish Tylosurus acus imperialis (Beloniformes, Belonidae) from off Tunisia
No full textChaari, Manel, Derbel, Hela, Neifar, Lassad (2011): Oesophagotrema mediterranea n. gen., n. sp. (Platyhelminthes, Digenea, Zoogonidae), parasite of the needlefish Tylosurus acus imperialis (Beloniformes, Belonidae) from off Tunisia. Zoosystema 33 (3): 281-286, DOI: 10.5252/z2011n3a2, URL: http://dx.doi.org/10.5252/z2011n3a
FIG. 2 in Redescription of Rhipidocotyle galeata (Rudolphi, 1819) (Digenea, Bucephalidae), the type species of Rhipidocotyle Diesing, 1907
No full textFIG. 2. — Rhipidocotyle galeata (Rudolphi, 1819) from Lichia amia (Linnaeus, 1758): A, dorsal view of terminal genitalia; B, proximal female genitalia (dorsal view). Scale bars: A, 200 μm; B, 100 μm.Published as part of Derbel, Hela, Châari, Manel & Neifar, Lassad, 2011, Redescription of Rhipidocotyle galeata (Rudolphi, 1819) (Digenea, Bucephalidae), the type species of Rhipidocotyle Diesing, 1907, pp. 133-139 in Zoosystema 33 (2) on page 137, DOI: 10.5252/z2011n2a1, http://zenodo.org/record/454684
FIG. 1. — Oesophagotrema mediterranea n. gen., n in Oesophagotrema mediterranea n. gen., n. sp. (Platyhelminthes, Digenea, Zoogonidae), parasite of the needlefish Tylosurus acus imperialis (Beloniformes, Belonidae) from off Tunisia
No full textFIG. 1. — Oesophagotrema mediterranea n. gen., n. sp., composite drawing of whole worm (ventral view). Scale bar: 500 μm.Published as part of Chaari, Manel, Derbel, Hela & Neifar, Lassad, 2011, Oesophagotrema mediterranea n. gen., n. sp. (Platyhelminthes, Digenea, Zoogonidae), parasite of the needlefish Tylosurus acus imperialis (Beloniformes, Belonidae) from off Tunisia, pp. 281-286 in Zoosystema 33 (3) on page 283, DOI: 10.5252/z2011n3a2, http://zenodo.org/record/454692
FIG. 2. — Oesophagotrema mediterranea n. gen., n in Oesophagotrema mediterranea n. gen., n. sp. (Platyhelminthes, Digenea, Zoogonidae), parasite of the needlefish Tylosurus acus imperialis (Beloniformes, Belonidae) from off Tunisia
No full textFIG. 2. — Oesophagotrema mediterranea n. gen., n. sp.: A, terminal genitalia; B, proximal female system. Scale bars: A, 100 μm; B, 200 μm.Published as part of Chaari, Manel, Derbel, Hela & Neifar, Lassad, 2011, Oesophagotrema mediterranea n. gen., n. sp. (Platyhelminthes, Digenea, Zoogonidae), parasite of the needlefish Tylosurus acus imperialis (Beloniformes, Belonidae) from off Tunisia, pp. 281-286 in Zoosystema 33 (3) on page 284, DOI: 10.5252/z2011n3a2, http://zenodo.org/record/454692
Rhipidocotyle Diesing 1907
No full textGenus <i>Rhipidocotyle</i> Diesing, 1907 <p>DIAGNOSIS. — Body covered with minute spines. Rhynchus simple, sucker-like, with dorsal hood; hood with or without associated lateral and/or frontal fleshy lobes. Mouth posterior to mid-body. Caecum sac-like, variably oriented from pharynx.Testes oblique or tandem.Seminal vesicle spherical to ovoid. Pars prostatica curved, never straight. Ovary pretesticular or lateral to anterior testis. Vitellarium in two fields, anterior to ovary or forming a contiguous arc at level of ovary. Excretory vesicle variable in length. In freshwater and marine fishes.</p>Published as part of <i>Derbel, Hela, Châari, Manel & Neifar, Lassad, 2011, Redescription of Rhipidocotyle galeata (Rudolphi, 1819) (Digenea, Bucephalidae), the type species of Rhipidocotyle Diesing, 1907, pp. 133-139 in Zoosystema 33 (2)</i> on page 134, DOI: 10.5252/z2011n2a1, <a href="http://zenodo.org/record/4546841">http://zenodo.org/record/4546841</a>
Oesophagotrema Chaari & Derbel & Neifar 2011, n. gen.
No full textGenus Oesophagotrema n. gen. TYPE SPECIES. — Oesophagotrema mediterranea n. sp. ETYMOLOGY. — The generic designation in part derives from the combination of the site of infection in the fish host, oesophagus in Latin, and trema for trematoda. DIAGNOSIS.— Zoogonidae, Lepidophyllinae. Body fusiform.Tegument spinous, spines decreasing in number to posterior level of body. Oral sucker globular, subterminal. Ventral sucker prominent, rounded, with mid-ventral aperture and small papillae. Prepharynx short. Pharynx oval. Oesophagus elongate, with slightly thickened wall. Intestinal bifurcation in posterior forebody. Caeca long, reaching anterior edge of posterior testis. Testes 2, oval to subspherical, tandem, postequatorial in middle third of hindbody. Cirrus sac claviform, curved, extending to intestinal bifurcation. Internal seminal vesicle saccular. Pars prostatica short, narrow. Ejaculatory duct straight. Genital pore in sinistral submarginal forebody, at level of pharynx. Ovary subspherical pretesticular, in hindbody. Seminal receptacle immediately postovarian, ovoid elongate. Vitellaria follicular, in two symmetrical lateral bunches, 9 follicles on poral side, 8 on antiporal side, between ovary and anterior testis. Eggs small, tanned and operculate. Excretory pore terminal. Parasitic in oesophagus and on vomer teeth of T. a. imperialis (Belonidae).Published as part of Chaari, Manel, Derbel, Hela & Neifar, Lassad, 2011, Oesophagotrema mediterranea n. gen., n. sp. (Platyhelminthes, Digenea, Zoogonidae), parasite of the needlefish Tylosurus acus imperialis (Beloniformes, Belonidae) from off Tunisia, pp. 281-286 in Zoosystema 33 (3) on page 282, DOI: 10.5252/z2011n3a2, http://zenodo.org/record/454692
Rhipidocotyle Diesing 1907
No full textKEY TO THE <i>RHIPIDOCOTYLE</i> SPECIES FROM MEDITERRANEAN SEA <p>1. Vitelline follicles in two lateral fields anterior to gonads............................................. 2</p> <p>— Vitelline follicles forming an arc in the sinistral part of body; not passing anteriorly to level of ovary.............................................................................................................. 7</p> <p>2. Caecum directed anteriorly from pharynx.................................................................. 3</p> <p>— Caecum directed posteriorly from pharynx................................................................. 6</p> <p> 3. Rhynchus devoid of dorsal hood; vitelline follicles at anterior extremity of posterior half of body..................................................................................................... <i>R. longicirrus</i></p> <p>— Rhynchus with dorsal hood or lobes; vitelline follicles located anteriorly in body....... 4</p> <p> 4. Dorsal hood with seven prominences; not separated from body by furrow....... <i>R. minima</i></p> <p>— Dorsal hood more or less lobed; separated from body by furrow................................. 5</p> <p> 5. Excretory vesicle extending well anterior to pharynx; dorsal hood lobed with two pointed processes on each side bearing spines; cirrus sac reaching the pharynx........... <i>R. viperae</i></p> <p> — Excretory vesicle reaching level of pharynx; anterior extremity of hood unarmed; ventral extremity of hood slightly lobed, not pointed; cirrus sac reaching posterior testis................................................................................................................................ <i>R. triglae</i></p> <p> 6. Hood pentagonal.................................................................................. <i>R. pentagonum</i></p> <p> — Hood horseshoe-shaped, ventral aspect with two extremities bearing distinct lobes........................................................................................................................... <i>R. capitata</i></p> <p> 7. Proximal extremity of cirrus sac at level of mid body; uterine loops extending anteriorly to anterior testis level; body length 448-627 µm............................................. <i>R. genovi</i></p> <p> — Proximal part of cirrus sac more posterior to mid body; uterine loops extending anteriorly to posterior margin of rhynchus; body length 1000-1650 µm....................... <i>R. galeata</i></p>Published as part of <i>Derbel, Hela, Châari, Manel & Neifar, Lassad, 2011, Redescription of Rhipidocotyle galeata (Rudolphi, 1819) (Digenea, Bucephalidae), the type species of Rhipidocotyle Diesing, 1907, pp. 133-139 in Zoosystema 33 (2)</i> on pages 138-139, DOI: 10.5252/z2011n2a1, <a href="http://zenodo.org/record/4546841">http://zenodo.org/record/4546841</a>
Triloculotrema euzeti n. sp. (Monogenea, Monocotylidae) from the nasal tissues of the blackspotted smooth-hound Mustelus punctulatus (Carcharhiniformes, Triakidae) from off Tunisia
No full textTriloculotrema euzeti n. sp. (Monogenea, Monocotylidae, Merizocotylinae) is described from the nasal tissues of the blackspotted smooth-hound Mustelus punctulatus collected from the coastal marine waters off Tunisia. The new parasite species is distinguished from the other two species of the genus, T. japanicae Kearn, 1993 and T. chisholmae Justine, 2009, by the morphology of the sclerotised male copulatory organ which has longitudinal ridges. The species is also characterised by its oötype with short descending and ascending limbs (long and more convoluted in the other two species). The presence of three peripheral loculi, which is the main characteristic of the genus Triloculotrema Kearn, 1993, is unconfirmed. This is the first description of a species of this genus in the Mediterranean Sea and the first record from a coastal shark
Benthic macrofauna associated with intertidal Zostera noltei beds in Atlantic (Arcachon Bay, France) and Mediterranean ecosystems (Kneiss Islands, Tunisia): comparative study.
No full textThe present study aim to compare between two distinct and distant geographical ecosystems; the Kneiss Islands and Arcachon Bay, which formed by extensive large mudflats with the intertidal Zostera noltei beds, hosted a greater diversity of waterbirds and provides socio-economic importance. In order to determine the response of benthic communities’ structure and functioning to climate variation, the two eelgrass ecosystems constitute a natural laboratory to infer climate warming. The macrobenthic fauna community of Zostera (Zosterella) noltei beds in Kneiss Islands was studied by sampling 34 stations and 48 stations for Arcachon Bay. A total of 148 taxa were identified in Kneiss Islands and 117 species for Arcachon Bay, but only 23 species are common in the both separate ecosystems. Diversity, abundance and community structure are significantly different between the two study areas, could be explained by differences between Mediterranean and Atlantic climatic conditions and by anthropic factors (e.g. fishing pressure, pollution, nutrient inputs) present in each ecosystem. Multidimensional scaling (n-MDS) analysis identified two distinct geographical station groups on the basis of species and families abundance. Save that, three assemblages were identified between the separated ecosystems on the basis of trophic groups.Actes de la conférence méditerranéenne Biodiv 2017: La biodiversité : quelles orientations pour la recherche et quels outils de conservation? Monastir, Tunisie, 28 au 30 octobre 2017Publishe
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