Studies on gonadosomatic index, fecundity and hatchability of domesticated stock of asala Schizothorax richardsonii (Gray) from Nallu River of Lalitpur District

Our Nature Pub Date : 2015-03-03 DOI:10.3126/ON.V12I1.12253

S. K. Wagle

引用次数: 7

Abstract

The present work embodies studies on the reproductive capacity of captive stock of asala Schizothorax richardsonii collected from Nallu River of Lalitpur district. Gonadosomatic index (GSI) estimates ranged from 3.08±0.9% in May to 26.55±1.8% in November. Positive correlation (r=0.667) was found between egg size and GSI. The egg size (2.7 to 2.9 mm) in October and November was significantly (P 0.05) between breeding seasons. Overripe eggs obtained during winter season breeding (16.5%) were significantly higher (P<0.01) than the summer season breeding (3.6%). This suggests that more frequent observation of the spawner is necessary during winter season for recognizing their appropriateness to ovulation. DOI: http://dx.doi.org/10.3126/on.v12i1.12253 Our Nature (2014), 12(1): 19-27

查看原文本刊更多论文

Lalitpur地区Nallu河richard Schizothorax richardsonii (Gray)驯化种群性腺指数、繁殖力和孵化率的研究

本文对拉利特普尔地区纳鲁河捕集的理查森沙腹鱼(Schizothorax richardsonii)的繁殖能力进行了研究。性腺指数(GSI)在5月的3.08±0.9%到11月的26.55±1.8%之间。鸡蛋大小与GSI呈正相关(r=0.667)。10月和11月的蛋大小(2.7 ~ 2.9 mm)差异显著(P < 0.05)。冬季养殖过熟蛋率(16.5%)极显著高于夏季养殖(3.6%)(P<0.01)。这表明，在冬季有必要更频繁地观察产卵者，以确定它们是否适合排卵。DOI: http://dx.doi.org/10.3126/on.v12i1.12253 Our Nature (2014)， 12(1): 19-27

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Our Nature

自引率

0.00%

发文量