نوع مقاله : مقاله پژوهشی
نویسندگان
1 بندرعباس
2 تهران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Jajroud river with 140km length, inhabits various species of aquatics of which one of the main identified one is freshwater crab belongs to POTAMIDAE family with scientific name of Potamon persicum. In this study, 388 specimens from 5 sampling stations (Latian dam, Taraghion, Khojir, Giahan daroie and Mamloo dam) were collected since November 1998.
All samples were transferred to the laboratory for reproduction studies and determination of spawning season, with studying the maturity stages of gonads and external eggs.
The results showed that the spawning season of this species occurring in middle of spring, it was also found that P. persicum is a total spawner. The external maturity (of eggs) was classified to 7 stages. On the other hand the maturity stages of gonad was recognized in accordance with the color, size and egg diameter and classified to 5 stages.
کلیدواژهها [English]
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