پديد آورندگان :
هاشمي، احمدرضا نويسنده پژوهشكده آبزي پروري جنوب كشور, , , رونق، محمدتقي نويسنده دانشگاه علوم و فنون دريايي خرمشهر,دانشكده علوم دريايي , , سينايي، محمود نويسنده Sinaie , mahmoud , درويش بسطامي، كاظم نويسنده دانشكده شيلات- دانشگاه علوم كشاورزي و منابع طبيعي گرگان Darvish Bastami , kazem , اسكندري ، غلامرضا نويسنده Eskandari , gholamreza , غفله مرمضي ، جاسم نويسنده Ghofleh Maramazi , jasem , سواري ، احمد 1332 نويسنده پزشكي savari, ahmad , شكاري، مجيد نويسنده دانشگاه علوم و فنون دريايي,دانشكده علوم دريايي , , كاشي، محمدتقي نويسنده پژوهشكده آبزي پروري جنوب كشور( اهواز) kashi, mohammad taghi
كليدواژه :
Argyrosomus hololepidotus , خليج فارس , خصوصيات زيستي , ميش ماهي
چكيده لاتين :
Biological attributes of Madagascar Meager (Argyrosomus hololepidotus) was studied from October 2008 to September 2009 in coastal waters of Khuzestan province. Average maximum length was 128.4±7.50 in October and average minimum length was 104.86±12.47 in May. The maximum weight was 27500g, the minimum weight was 5700g and mean weight for males and females were 15.222±4.40 and 16.942±5.09, respectively.
Reproductive studies showed that peak maturity season occurred in July. The length- weight relationship were calculated as W=0.042L2 70 for males and W=0.06L2 61 for females. The male-female sex ratio was calculated as 1:1.07 and chi-square analysis showed no significant difference (P>0.05) between the two sexes. The average absolute and relative fecundity were estimated to be 4054045±37265 and 179.19±50.41, respectively Madagascar Meager is carnivore and we found the diet of the species consisted of fish (75%), crustaceans (20%) and mollusks (5%). Analysis of monthly variation in the condition factor (Kn) indicated a fluctuation throughout the year, with a high level during May. Vacuity index indicated a higher feeding rate in males compared to females. We also found that the species continues feeding in the spawning season.
