Reproductive biology of the European anchovy Engraulis encrasicolus (Linnaeus, 1758) in the Turkish Aegean Sea

Küçük Resim Yok

Tarih

2024

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Walter De Gruyter Gmbh

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

The present study investigated the reproductive biology of European anchovies obtained seasonally from fishermen in Izmir Bay (Aegean Sea). The total length range of the investigated individuals was 9.0 - 15.7 cm. Of the 750 samples in which sex was determined, 34% were males, and 66% were females, resulting in a female-to-male ratio of 1.91:1. The first maturation length was determined to be 10.47 cm for females and 9.95 cm for males. Based on the total values of the gonadosomatic index, it was concluded that the reproductive period of the species falls in the summer season. The batch fecundity of the species ranged from 2.123 to 6.951 oocytes, and the fecundity-length relationship was expressed as F = 1134.4TL - 10034 (R2 = 0.84). Histological examination of the female ovaries revealed the presence of oocytes at different stages of development, indicating multiple spawning during the reproductive season.

Açıklama

Anahtar Kelimeler

European Anchovy, Engraulis Encrasicolus, Batch Fecundity, First Length Maturity, Izmir Bay, Aegean Sea

Kaynak

Oceanological and Hydrobiological Studies

WoS Q Değeri

N/A

Scopus Q Değeri

Q3

Cilt

53

Sayı

1

Künye