Changes of gonadosomatic index (GSI) and egg diameter in the grayling Thymallus thymallus (L.) in annual cycle

Autor:	Bogusław Kokurewicz, Mieczysław Kowalewski, Andrzej Witkowski, Jan Błachuta
Rok vydání:	1989
Předmět:	Fishery Gonadosomatic Index Grayling Aquatic Science Biology Annual cycle biology.organism_classification Thymallus
Zdroj:	Acta Ichthyologica et Piscatoria 19(2): 21-28
ISSN:	1734-1515 0137-1592
DOI:	10.3750/aip1989.19.2.02
Popis:	The most intense growth of grayling ovaries takes place in autumn and winter (September-March), of testes-in summer (July-September). Older females and males all seasons have a higher GSI, and the diameter of developing eggs is higher.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::098ff5d75acc1353d25d2a9461db8ee0 https://doi.org/10.3750/aip1989.19.2.02 Zobrazit plný text záznamu