Orygmatobothrium spp. (Cestoda: Tetraphyllidea) from triakid sharks in Argentina: Redescription of Orygmatobothrium schmittii and description of a new species
Two species of Orygmatobothrium were found inhabiting triakid sharks collected from the coast of Buenos Aires Province, Argentina. Orygmatobothrium schmittii from Mustelus schmitti is redescribed, including new information on the microtrich pattern. Orygmatobothrium juani n. sp. from Mustelus fascia...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00223395_v94_n5_p1087_Ivanov |
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todo:paper_00223395_v94_n5_p1087_Ivanov2023-10-03T14:31:51Z Orygmatobothrium spp. (Cestoda: Tetraphyllidea) from triakid sharks in Argentina: Redescription of Orygmatobothrium schmittii and description of a new species Ivanov, V.A. coastal zone eggshell flatworm fossil record morphology new species paleobiology reconstruction shark Argentina article cestode egg shell egg size nonhuman Orygmatobothrium juani Orygmatobothrium schmittii ovary follicle scolex shark testis Animals Argentina Cestoda Cestode Infections Fish Diseases Microscopy, Electron, Scanning Sharks Argentina Buenos Aires [Argentina] South America Cestoda Chondrichthyes Mustelus fasciatus Mustelus schmitti Paraorygmatobothrium Tetraphyllidea Triakidae Two species of Orygmatobothrium were found inhabiting triakid sharks collected from the coast of Buenos Aires Province, Argentina. Orygmatobothrium schmittii from Mustelus schmitti is redescribed, including new information on the microtrich pattern. Orygmatobothrium juani n. sp. from Mustelus fasciatus can be distinguished from all other species in the genus using the following combination of characters: worm length, number of proglottids, number of testes, testes distribution, size of eggs, ornamented egg shell, shape of bothridial cleft at level of the marginal accessory sucker, and the extension of vitelline follicles. Species in Orygmatobothrium share a common microtrich pattern with the distal bothridial surface covered with maisiform microtriches interspersed with filiform microtriches, a proximal bothridial surface covered with trifid microtriches, with a medial projection conspicuously larger than the lateral basal projections interspersed with filiform microtriches, an inner and outer surface of the accessory sucker and glandulomuscular organ covered with short filiform microtriches, the scolex proper and cephalic peduncle surface covered with bladelike microtriches, and the germinative zone and entire strobila covered with scutes formed by densely packed filiform microtriches. This general configuration is basically similar to the microtrich pattern described in species of Orectolobicestus and Paraorygmatobothrium. © American Society of Parasitologists 2008. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00223395_v94_n5_p1087_Ivanov |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
coastal zone eggshell flatworm fossil record morphology new species paleobiology reconstruction shark Argentina article cestode egg shell egg size nonhuman Orygmatobothrium juani Orygmatobothrium schmittii ovary follicle scolex shark testis Animals Argentina Cestoda Cestode Infections Fish Diseases Microscopy, Electron, Scanning Sharks Argentina Buenos Aires [Argentina] South America Cestoda Chondrichthyes Mustelus fasciatus Mustelus schmitti Paraorygmatobothrium Tetraphyllidea Triakidae |
| spellingShingle |
coastal zone eggshell flatworm fossil record morphology new species paleobiology reconstruction shark Argentina article cestode egg shell egg size nonhuman Orygmatobothrium juani Orygmatobothrium schmittii ovary follicle scolex shark testis Animals Argentina Cestoda Cestode Infections Fish Diseases Microscopy, Electron, Scanning Sharks Argentina Buenos Aires [Argentina] South America Cestoda Chondrichthyes Mustelus fasciatus Mustelus schmitti Paraorygmatobothrium Tetraphyllidea Triakidae Ivanov, V.A. Orygmatobothrium spp. (Cestoda: Tetraphyllidea) from triakid sharks in Argentina: Redescription of Orygmatobothrium schmittii and description of a new species |
| topic_facet |
coastal zone eggshell flatworm fossil record morphology new species paleobiology reconstruction shark Argentina article cestode egg shell egg size nonhuman Orygmatobothrium juani Orygmatobothrium schmittii ovary follicle scolex shark testis Animals Argentina Cestoda Cestode Infections Fish Diseases Microscopy, Electron, Scanning Sharks Argentina Buenos Aires [Argentina] South America Cestoda Chondrichthyes Mustelus fasciatus Mustelus schmitti Paraorygmatobothrium Tetraphyllidea Triakidae |
| description |
Two species of Orygmatobothrium were found inhabiting triakid sharks collected from the coast of Buenos Aires Province, Argentina. Orygmatobothrium schmittii from Mustelus schmitti is redescribed, including new information on the microtrich pattern. Orygmatobothrium juani n. sp. from Mustelus fasciatus can be distinguished from all other species in the genus using the following combination of characters: worm length, number of proglottids, number of testes, testes distribution, size of eggs, ornamented egg shell, shape of bothridial cleft at level of the marginal accessory sucker, and the extension of vitelline follicles. Species in Orygmatobothrium share a common microtrich pattern with the distal bothridial surface covered with maisiform microtriches interspersed with filiform microtriches, a proximal bothridial surface covered with trifid microtriches, with a medial projection conspicuously larger than the lateral basal projections interspersed with filiform microtriches, an inner and outer surface of the accessory sucker and glandulomuscular organ covered with short filiform microtriches, the scolex proper and cephalic peduncle surface covered with bladelike microtriches, and the germinative zone and entire strobila covered with scutes formed by densely packed filiform microtriches. This general configuration is basically similar to the microtrich pattern described in species of Orectolobicestus and Paraorygmatobothrium. © American Society of Parasitologists 2008. |
| format |
JOUR |
| author |
Ivanov, V.A. |
| author_facet |
Ivanov, V.A. |
| author_sort |
Ivanov, V.A. |
| title |
Orygmatobothrium spp. (Cestoda: Tetraphyllidea) from triakid sharks in Argentina: Redescription of Orygmatobothrium schmittii and description of a new species |
| title_short |
Orygmatobothrium spp. (Cestoda: Tetraphyllidea) from triakid sharks in Argentina: Redescription of Orygmatobothrium schmittii and description of a new species |
| title_full |
Orygmatobothrium spp. (Cestoda: Tetraphyllidea) from triakid sharks in Argentina: Redescription of Orygmatobothrium schmittii and description of a new species |
| title_fullStr |
Orygmatobothrium spp. (Cestoda: Tetraphyllidea) from triakid sharks in Argentina: Redescription of Orygmatobothrium schmittii and description of a new species |
| title_full_unstemmed |
Orygmatobothrium spp. (Cestoda: Tetraphyllidea) from triakid sharks in Argentina: Redescription of Orygmatobothrium schmittii and description of a new species |
| title_sort |
orygmatobothrium spp. (cestoda: tetraphyllidea) from triakid sharks in argentina: redescription of orygmatobothrium schmittii and description of a new species |
| url |
http://hdl.handle.net/20.500.12110/paper_00223395_v94_n5_p1087_Ivanov |
| work_keys_str_mv |
AT ivanovva orygmatobothriumsppcestodatetraphyllideafromtriakidsharksinargentinaredescriptionoforygmatobothriumschmittiianddescriptionofanewspecies |
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1807319157709996032 |