Abstract
Egg and clutch sizes, and gonad somatic index (GSI) at maturity of the amphidromous goby Rhinogobius giurinus were examined in the Aizu River, Wakayama Prefecture, Japan. The goby tended to have a larger clutch size, with smaller eggs, and matured at the lower GSI, compared with those in the three sympatric amphidromous species of R. brunneus complex. Higher water temperature and abundant food conditions may affect the optimal egg size in R. giurinus. Besides, higher larval survival rate during downstream migration may affect lower GSI at maturity in this goby that usually inhabits lower reaches of the river.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
