The first evidence of intersexuality in Atka mackerel Pleurogrammus monopterygius (Hexagrammidae)

• Published in: Zygote
• Main Authors: Zhukova, Kristina, Golovatyuk, Galina Yu.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Cambridge University Press (CUP) 2021
• Subjects: Cell Biology; Developmental Biology; Pacific; Kamchatka Peninsula; Atka; Kamchatka
• Online Access: http://dx.doi.org/10.1017/s0967199420000726; https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0967199420000726

Summary Histological examination of Atka mackerel ovotestes reveals the possibility of intersexuality. Individuals with bisexual gonads have been caught in the North Pacific near the south-east coast of the Kamchatka peninsula. While intersex appeared to be normal females with developing ovaries, histological analysis showed the presence of both female and male tissue in the same gonad. Specifically, primary growth, cortical alveolar and primary vitellogenic oocytes were located among spermatogonia cysts. The prevalence of intersexuality in the population was less than 0.1%.