Some features of biology of tubenose goby Proterorhinus
| Autor: | MILOVANOV Alexander |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Scientific Annals of the Danube Delta Institute, Vol 20, Pp 11-16 (2014) |
| Druh dokumentu: | article |
| ISSN: | 1842-614X 2247-9902 |
| DOI: | 10.7427/DDI.20.02 |
| Popis: | The present paper provides data on length-weight composition and sex ratio, respectively information about spawning and feeding of tubenose goby (Proterorhinus marmoratus) from the Kerch strait. A total number of 1200 specimen of tubenose goby (Proterorhinus marmoratus) was collected and analysed. In the studied region tubenose goby (Proterorhinus marmoratus) occurs along all coastline and is registred on depths to 1.5 m, but the specimens are more concentrated/numerous in the bays of northern and central parts of the Kerch strait. The species main habitat are sea grass meadows in the coastal zone. The main number of individuals had length ranging between 4.0 cm and 7.5 cm and weight was ranging between 0.8 g and 5 g. Males and females of tubenose goby in the Kerch Strait do not differentiate by length and weight. Females of tubenose goby prevail notedly over males. Females ripen before males. The most intensive spawning time for tubenose goby in the Kerch strait is end of May. Spawning areas are in shallow water zone with depth 0.2-1.5 m, with timed sandy and sandy-stony grounds (with a mixture of shell rock). In case of the tubenose gobies (Proterorhinus marmoratus) from the Kerch strait the main food- components are Isopoda, Amphipoda and Polychaeta. |
| Databáze: | Directory of Open Access Journals |
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