The first observations of oocyte diameters for the pipefish from the southern Black Sea

Abstract

Abstract Syngnathid specimens sample between July 2001˗May 2002 was examined about measurements of oocyte diameter in the coastal waters of Sinop peninsula, southern Back Sea. The specimens of Syngnathid fishes (Syngnathus acus, Syngnathus typhle, Syngnathus variegatus, Syngnathus tenuirostris, Nerophis ophidion) catched with using hand dredge from the vegetated coastal area. According to results, the mean of hydrated oocyte diameter was calculated as, respectively: Syngnathus acus: 1.96 mm, Syngnathus typhle: 1.76 (♀) and 2.22 (♂) mm, Syngnathus tenuirostris: 1.81 mm, Syngnathus variegatus: 1.63 mm and Nerophis ophidion: 0.89 mm. Also with this study, oocytes diameter values of Syngnathus tenuirostris, Syngnathus variegatus, Syngnathus typhle and Nerophis ophidion determined for the first time from coast of Turkey.

Keywords

• Key words: Syngnathidae, oocyte diameter, southern Black Sea, Turkey

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