abstract in this study were reviewed some biological characteristics including sex ratio, gonadosomatic index, fecundity and egg diameter carassius gibelio in the study area from february to september 2015. during the study, 222 specimens from boostan dam and 238 specimens from alakoli reservoir were sampled using small beach seine. the maximum total length and weight of boostan dam for females...

The striped snakehead Channa striata is a valuable food fish and has high market value. feeding natural breeding grounds of this economically important species have been reduced due to increasing anthropogenic activities habitat alterations in the Gangetic River system. present study was undertaken assess reproductive biology C. striata, which widely distributed India many other Asian countries...

Oral supplementation with 50, 100 and 150 μg/ml arginine to the silkworm larvae resulted in a significant increase in the larval weight, silkgland weight in only 150 μg/ml, cocooning percentage in all the fed groups, female cocoon weight, cocoon shell weight, cocoon shell ratio, male cocoon weight, cocoon shell weight and shell ratio is increased in all the treated groups, filament length were ...

background: fertility as one of the factor affecting population growth itself is affected by various factors. therefore, identifying factors which can influence this component is very vital. the purpose of this study was comparative investigate fecundity rate of 15-49 year old and married women under imam-emdad-committee and rehabilitation organizations’ protection and 15-49 year old women who ...

Growth differentiation factor 9 (GDF9) belong to the superfamily of transforming growth factor β that is highly expressed in growing ovarian follicles of oocyte, and it has been strongly related to fecundity traits in sheep. Therefore, the GDF9 gene could serve as a genetic marker for improvement of reproductive performance in sheep. Therefore, the aim of this study was to invest...

The reproductive biology of albacore tuna, Thunnus alalunga, in the South Pacific Ocean was investigated with samples collected during broad-scale sampling between 2006 and 2011. Histology was done in a single laboratory according to standard protocols and the data analysed using generalized linear mixed-effects models. The sex ratio of albacore was female biased for fish smaller than approxima...

How fecundity might be traded off with mate attraction and other aspects of reproduction in females remains poorly understood. We investigated these allocation trade-offs using the common glowworm (Lampyris noctiluca), a lampyrid beetle, which flightless, sedentary only use resources gathered during larval stage to attract flying males by glowing. While sexual signaling was not found have signi...