Mating patterns of first-generation hybrids of the roach, Rutilus rutilus (L.), and the silver bream, Blicca bjoerkna (L.)

被引:5
|
作者
Matondo, B. Nzau [1 ]
Ovidio, M. [1 ]
Philippart, J. C. [1 ]
Poncin, P. [1 ]
机构
[1] Univ Liege, Lab Fish Demog & Hydroecol, B-4500 Tihange, Belgium
关键词
mating; hybrid reproduction; mixed reproduction; hybrids; cyprinids;
D O I
10.1007/s10164-007-0039-y
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
Mating patterns among first-generation hybrids of the roach, Rutilus rutilus, and the silver bream, Blicca bjoerkna, between hybrids or with parent-species males, have been investigated under experimental reproduction conditions. The results reveal that the level of sexual activity of these hybrids is high. Hybrid females mated simultaneously and successively with all types of male, resulting in fertilised eggs. Individual participation of roach males in mating was never observed, however.
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页码:179 / 183
页数:5
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