Age, growth, and gonadal condition of the Giant mottled eel, Anguilla marmorata, in Okinawa-Jima Island, Japan

• Published in: Environmental biology of fishes Vol. 103; no. 8; pp. 927 - 938
• Main Authors: Kita, Tomohiro, Tachihara, Katsunori
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.08.2020; Springer Nature B.V
• Subjects: Age; Anguilla anguilla; Anguilla marmorata; Animal Systematics/Taxonomy/Biogeography; Annual rings; Aquatic ecosystems; Biomedical and Life Sciences; Catadromous fishes; Catadromous migrations; Eels; Environment; Females; Fish; Fishing; Freshwater & Marine Ecology; Gonadosomatic index; Gonads; Growth; growth rings; High temperature; Japan; Life history; Life Sciences; Males; Marine fishes; Morphology; Nature Conservation; otoliths; Rivers; Seasonal variations; Seasonality; Sex discrimination; Sexes; Water temperature; Zoology; Japan; Okinawa; Urbanization; Annulus validation; Growth rate; Ryukyu archipelago; Otolith; Latitudinal cline

Age, growth, and gonadal condition of the Giant mottled eel, Anguilla marmorata , were estimated from 303 specimens collected at Okinawa-jima Island, Japan. Otolith opaque zones that formed every year correlated with high water temperature and were thought to be annual rings. The growth of this spec...