Mate sampling in a population of sand gobies

被引:83
作者
Forsgren, E [1 ]
机构
[1] UPPSALA UNIV,DEPT ZOOL,UPPSALA,SWEDEN
关键词
D O I
10.1006/anbe.1996.0374
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
Female mate-sampling behaviour and mate choice were investigated in a natural population of sand gobies, Pomatoschistus minutus. The sand goby is a promiscuous fish with paternal care. Gravid females were released in the field and watched while they inspected potential mates. In total, 26 females were observed until they spawned. Half of the females spawned with the first male encountered. The other females inspected two or more males in sequence and never returned to a previously inspected male to mate. Females mated preferentially with males that courted intensively. The mate-sampling behaviour of the female sand gobies was most consistent with a threshold-criterion tactic, which is to be expected if search costs are important. Moreover, there was an effect of season, such that females sampled very few males early but apparently became more selective later in the breeding season. This is discussed and interpreted as an effect of varying costs and benefits of being choosy over the season. (C) 1997 The Association for the Study of Animal Behaviour.
引用
收藏
页码:267 / 276
页数:10
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