Morphological and gonadal histological characteristics of the silver-phase male Indo-Pacific eel Anguilla marmorata.

Autor: Hagihara S; Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, Japan., Wakiya R; Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, Japan., Maeda T; Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, Japan., Kimura S; Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, Japan.
Jazyk: angličtina
Zdroj: Journal of fish biology [J Fish Biol] 2022 Sep; Vol. 101 (3), pp. 749-752. Date of Electronic Publication: 2022 Jul 09.
DOI: 10.1111/jfb.15139
Abstrakt: Eight silver-phase male Indo-Pacific eels (giant mottled eels) Anguilla marmorata were collected from three small rivers on subtropical Amami-Oshima Island, Japan, and their morphological and gonadal-histological characteristics were examined. The total length, body mass and age of the silver eels were 543.8 ± 49.3 (496-659) mm, 376.0 ± 116.0 (282-660) g and 14.6 ± 2.3 (11-19) years old, respectively. The silvering-related characteristics (eye index, pectoral-fin index, gut-somatic index) and reproductive characteristics (gonadosomatic index, histological stage) of the silver eels were significantly advanced compared to those of yellow eels, which is similar to other anguillid species.
(© 2022 Fisheries Society of the British Isles.)
Databáze: MEDLINE
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