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长江中游江段粗唇鱼危体内鲇异棘虫种群生态的研究 被引量:2
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作者 方建平 吴中华 +1 位作者 张春松 石章红 《生态学杂志》 CAS CSCD 北大核心 2001年第5期19-21,共3页
Total of 107 Leiocassis crassilabris caught in Huangzhou along the Yangtze River from May to July, 1999 were examined for infection by Heterosentis parasiluri .The infection rate of the host was 84.1%.The infection ra... Total of 107 Leiocassis crassilabris caught in Huangzhou along the Yangtze River from May to July, 1999 were examined for infection by Heterosentis parasiluri .The infection rate of the host was 84.1%.The infection rate of the host with body Length 12.0-16.0cm was the highest,while no Heterosentis parasiluri was found in the host with body length above 28.0 cm.The infection intensity of the host was 23.5.There was a negative correlation between body length and infection intensity of the host.r=-0.9043.Parasite population was mainly composed of parasites with length below 3.0 mm.The females were more than the males obviously.Distribution of Heterosentis parasiluri was clumped in the host population. 展开更多
关键词 长江中游 粗唇Wei 鲇异棘虫 种群生态
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长江黄州江段长须黄颡鱼肠道内寄生棘头虫的生态研究 被引量:3
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作者 方建平 詹火元 雷桂兰 《水生生物学报》 CAS CSCD 北大核心 2004年第3期279-283,共5页
解剖检查了 133尾捕自长江黄州江段的长须黄颡鱼 ,发现寄主感染长江丽棘虫的感染率为 4 8.9% ,感染强度为 5 .4 (虫 /尾 ) ,平均密度为 2 .6 (虫 /尾 ) ,感染鲇异棘虫的感染率为 2 1.8% ,感染强度为 5 .5 (虫 /尾 ) ,平均密度为1.2 (虫 ... 解剖检查了 133尾捕自长江黄州江段的长须黄颡鱼 ,发现寄主感染长江丽棘虫的感染率为 4 8.9% ,感染强度为 5 .4 (虫 /尾 ) ,平均密度为 2 .6 (虫 /尾 ) ,感染鲇异棘虫的感染率为 2 1.8% ,感染强度为 5 .5 (虫 /尾 ) ,平均密度为1.2 (虫 /尾 ) ,两种棘头虫在长须黄颡鱼种群中均为聚集分布 ;当两种棘头虫共同寄生在宿主肠道内时 ,其感染强度和单独感染时相比没有显著差异 ,但是 ,各自的生态位宽度均变小 ;两种棘头虫的正关联关系显著。 展开更多
关键词 长江 黄州江 长须黄颡鱼 肠道 寄生 种群生态 鲇异棘虫 长江丽
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