Reproductive biology of Charybdis (Goniohellenus) longicollis Leene, 1938 (Brachyura: Portunidae), in the north-eastern Mediterranean Sea, Turkey


Tureliand C., YEŞİLYURT İ. N.

INDIAN JOURNAL OF FISHERIES, cilt.66, ss.16-20, 2019 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 66 Konu: 2
  • Basım Tarihi: 2019
  • Doi Numarası: 10.21077/ijf.2019.66.2.80235-03
  • Dergi Adı: INDIAN JOURNAL OF FISHERIES
  • Sayfa Sayıları: ss.16-20

Özet

The swimming crab, Charybdis (Goniohellenus) longicollis Leene, 1938, is a Lessepsian migrant into the Mediterranean and little is known about its biology in Iskenderun Bay, north-eastern Mediterranean, Turkey. The size of crabs, sex-ratio and spawning period of this species was defined from 951 specimens in order to understand their reproduction and development in the North-Eastern Mediterranean Sea. The crabs were found to occur throughout the year. Carapace width (CW) ranged between 7.22 to 100.60 mm and total weight ranged from 1.34 to 164.09 g. Male-female sex ratio was 0.6:1. Highest gonado-somatic index (GSI) was seen in March and September for females and in May for males. Ovigerous females were present throughout the year, with peak spawning activity in July and September. The CW of the ovigerous female crabs ranged between 23.71 and 95.93 mm. In winter months, GSI of males and females decreased. However, spawning season of C. (G.) longicolis in Yumurtahk Cove was observed throughout the year.