Study of the filiform gonads of walleye pollock Theragra chalcogramma inhabiting the Sea of Okhotsk and the Bering Sea


Дәйексөз келтіру

Толық мәтін

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Аннотация

The histological study of the adult specimens of walleye pollock Theragra chalcogramma carrying filamentous gonads evidenced that this group comprised males, females, and sterile fish. The specimens carrying the filamentous gonads have been found mostly in the elder age groups; no maturing of the oocytes or sperm cells has been registered. The frequency of occurrence of such specimens was relatively low: 0.07–0.13% in the Sea of Okhotsk and up to 0.25% in the Bering Sea. We conclude that these specimens have nearly no effect on the reproductive success of this species.

Авторлар туралы

K. Zhukova

Russian Federal Research Institute of Fisheries and Oceanography (VNIRO)

Хат алмасуға жауапты Автор.
Email: kzh@vniro.ru
Ресей, Moscow, 107140

S. Ponomarev

Pacific Scientific Research Fisheries Center (TINRO-Center)

Email: kzh@vniro.ru
Ресей, Vladivostok, 690950

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