Determine some reproductive characteristics of Brown Shrimp Farfantepenaeus aztecus, Ives, 1891 which originated from atlantic in the Gulf of Antalya

In this project, it was aimed to determine some reproductive characteristics of Brown Shrimp's Farfantepenaeus aztecus) which originated from Atlantic and recorded for the first time in the Mediterranean in 2010. The population of this shrimp has increased rapidly since 2010, and become one of the most important species in the Gulf of Antalya. In this research, a total 764 specimens, 383 males, 381, females of F. aztecus was caught in monthly periods in between Side and Lara Beach using trawl and trammel nets. Shrimps was distinguished in terms of sex, via macroscobic control seen petasma on the male and thelycum on the female. Gonad maturity stages and gonadosomatic index were used to determine reproductive period for females. In regards to Gonadosomatic index and gonad developments, it was determined that reproduction season was distributed between June and September. Diameter of eggs range was calculated from 0,090 mm to 0,260 mm. First maturity length of females was determined as 17 cm, while males were at 11,5 cm total length which was joined petasma. These findings will show a way for further studies which will be performed on issues on regulation of fisheries and supply of broodstock for aquaculture and other studies related to this species.