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Comparison of the population structure of the crab Uca sindensis from two inertidal flat habitats North West Arabian Gulf

Author: Hamza A.Kadhim
Journal: Journal of Basrah Researches (Sciences) مجلة ابحاث البصرة ( العلميات) ISSN: 18172695 Year: 2008 Volume: 34 Issue: 2A Pages: 15-22
Publisher: Basrah University جامعة البصرة

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Abstract

The structure of two population of Uca sindensis crab in two habitats at the north west Arabian Gulf were compared. The size of individuals; distribution sex ratio and recruitment were evaluated. The physical properties of sediments (texture and organic matter contents) were also examined. The population structure of the crabs was investigated during one year in two habitats. Crabs were caughted manually from 15 – min during low tide. The carapace width of each crab was measured with caliper and the sex and ovigerous state were recorded. The median size of crabs differed in each sample population. It was smaller at Shatt Al- Arab estuary where as larger at Khor Abdallah. The intertidal zone of Shatt Al Arab estuary and Khor Abdallah showed high productivity. Marked differences were found regarding individual size, either their onset of sexual maturity or their asymptotic size, suggesting that food availability may be favoring growth in the studied population

درست مجتمعات السرطانUca sindensis في بيئتين شمال غرب الخليج العربي ,درست مجتمعات السرطان خلال الفتره من شهر كانون الثاني ولغايه كانون الاول من العام 2006 تم جمع العينات خلال فترة الجزر,وجدت الدراسه ان هناك اختلاف في تركيب المجتمعين وكانت منطقة مابين المد والجزر لمصب شط العرب وخور عبدالله من اكثر المناطق انتاجيه .

Keywords

Crabs --- Uca --- Intertiadal --- sindensis --- Population

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