Diet and feeding strategy of the common stingray Dasyatis pastinaca (Linnaeus, 1758) on the Turkish coast of southeastern Black Sea


SAĞLAM H. , AK O., KUTLU S., AYDIN I.

CAHIERS DE BIOLOGIE MARINE, cilt.51, ss.37-44, 2010 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 51 Konu: 1
  • Basım Tarihi: 2010
  • Dergi Adı: CAHIERS DE BIOLOGIE MARINE
  • Sayfa Sayıları: ss.37-44

Özet

The diet of common stingray, Dasyatis pastinaca, was studied for the first time in specimens collected in the southeastern Black Sea between June 2007 and May 2008. Fish were collected in bottom trawl catch at 20-40 m depth. Overall, 8 prey taxa were identified to species level. The stomach content analysis showed that this species fed usually on crustaceans. Mud shrimp Upogebia pusilla was the most important prey. Other preys, such as anchovy Engraulis encrasicholus, red mullet Mullus barbatus ponticus and harbor crab Liocarcinus depurator were eaten occasionally whereas horse mackerel Trachurus mediterraneus, Mediterranean shore crab Carcinus mediterraneus, brown shrimp Crangon crangon and clam Venus gallina were eaten in very small amounts. The non-parametric tests with rankings were applied to feeding data to assess season, ontogenetic or sex-related changes in diet. No difference was detected between sexes and diet of small and large fish, but significant differences were found between seasons.