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首页> 外文期刊>The Kasetsart Journal >Distribution and Early-life Development of Thai River Sprat Clupeichthys aesarnensis Wongratana, Larvae, in Pasak Jolasid Reservoir, Lop Buri Province, Thailand
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Distribution and Early-life Development of Thai River Sprat Clupeichthys aesarnensis Wongratana, Larvae, in Pasak Jolasid Reservoir, Lop Buri Province, Thailand

机译:泰国华富里Pasak Jolasid水库中幼虫的泰国河南沙rat(Clupeichthys aesarnensis Wongratana)的分布和早期生命发育

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摘要

The distribution of Thai river sprat Clupeichthys aesarnensis Wongratana, larvae, in Pasak Jolasid Reservoir, Lop Buri Province during April 2003 to February 2004 was studied bi-monthly by plankton net towing in 24 sampling stations. The environmental conditions and water qualities were recorded and measured in situ. The abundance of larvae showed differential significance in months (P < 0.0001). The spawning of the Thai river sprat in Pasak Jolasid Reservoir occurred throughout the year but was high in early rainy season (June 2003: 46.87% of larval number) and low in dry season (December 2003 to February 2004:1.46% of larval number) and irregularly in the reservoir. Development of myomere in yolk-sac larvae were not complete while the digestive gut opened at 82%NL in yolk-sac larvae and moved to the mid-portion or 59%TL in juvenile.
机译:2003年4月至2004年2月,在华富里府帕萨克Jolasid水库中,泰国河小rat Clupeichthys aesarnensis Wongratana幼虫的分布情况每24个采样站每两个月进行一次浮游生物网拖曳研究。记录并现场测量环境条件和水质。幼虫的丰度在数月内显示差异显着(P <0.0001)。泰国河鲱的产卵全年发生在Pasak Jolasid水库中,但在雨季初期(2003年6月:幼虫数量的46.87%)高,而在旱季则较低(2003年12月至2004年2月:幼虫数量的1.46%)。并且不定期地在水库中。卵黄囊幼虫中的Myomere发育不完全,而消化肠在卵黄囊幼虫中以82%NL打开,并移至幼虫的中部或59%TL。

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