Sex Determination of Yellow Perch by External Morphology
Sex Determination of Yellow Perch by External Morphology
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DOI：
10.1080/15222055.2011.601983
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发表时间：
2011-01-01
影响因子：
1
通讯作者：
Kaatz, Sarah E.
中科院分区：
文献类型：
--
作者：
Malison, Jeffrey A.;Held, James A.;Kaatz, Sarah E.
提出了一种利用外部形态特征鉴别黄鲈性别的方法。使用的特征是（1）泌尿生殖道开口的形状，（2）当拇指按压肛门前的腹部时，泌尿生殖道开口前缘的形状，以及（3）肛门周围是否存在肿胀。在雌性动物中，泌尿生殖道开口呈新月形或半月形，当对腹部施加压力时，其前缘保持线性，肛门周围存在环形肿胀区域。在雄性中，尿生殖孔是圆形的，当按压腹部时，其前端扩张成V形或U形（向前尖），并且肛门周围区域通常不肿胀。对全长190-280 mm的鱼，准确率为97.4%，全长111-150 mm的鱼为93.1%，全长80-110 mm的鱼为82.7%。
We developed a method of using external morphological characteristics to determine the sex of yellow perch Perca flavescens. The characteristics used were (1) the shape of the urogenital opening, (2) the shape of the anterior edge of the urogenital opening when thumb pressure was applied to the abdomen just anterior to the anus, and (3) the presence or absence of swelling around the anus. In females, the urogenital opening was crescent or half-moon shaped, its anterior edge remained linear when pressure was applied to the abdomen, and a ring-shaped area of swelling was present around the anus. In males, the urogenital pore was circular, its anterior end distended to a V or U shape (pointed anteriorly) when the abdomen was pressed, and the area around the anus was not generally swollen. The accuracy of using this method was 97.4% for fish 190-280 mm total length, 93.1% for fish 111-150 mm, and 82.7% for fish 80-110 mm.