Breeding behaviour of brook lampreys Lampetra planeri: experiments on mate choice
Breeding behaviour of brook lampreys Lampetra planeri: experiments on mate choice
复制标题
溪七鳃鳗的繁殖行为：配偶选择实验
DOI：
10.2307/3544344
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发表时间：
1983
期刊：
影响因子：
3.4
通讯作者：
B. Malmqvist
中科院分区：
文献类型：
--
作者：
B. Malmqvist;B. Malmqvist
在溪槽中研究了产卵溪七鳃鳗的行为。冷冻品牌使人们能够识别个人。攻击主要是在筑巢的男性和入侵男性之间的实验开始观察。尽管广泛的滥交有一个显着的正相关性的大小之间的合作伙伴，表明一个独立的交配。男性竞争交配，这表明，最警觉的男性是最有可能与女性交配。通常，额外的男性盘绕在同一女性周围。“卫星”雄性经常被看到快速地绕着交配对的尾巴转圈，可能是受精卵。雄性参与产卵的时间平均是雌性的两倍。雌性通常在最后一个卵产卵后几天交配。这种行为的原因仍然不清楚。在另一个实验中，伴侣大小的巨大差异降低了受精效率。当雌性/雄性长度比为1.05-1.14时，受精最成功。
The behaviour of spawning brook lampreys, Lampetra planeri (Bloch), was studied in a stream tank. Freeze-branding enabled recognition of individuals. Aggression was observed mainly at the beginning of the experiment between nest-building males and intruding males. In spite of widespread promiscuity there was a significant positive correlation in size between the partners, indicating an assortative mating. Males competed for matings and it is suggested that the most alert males are the ones most likely to mate with the females. Frequently, additional males coiled round the same female. "Satellite" males were often seen to circle rapidly round the tails of copulating pairs, probably fertilising eggs. Males took part in the spawning on average twice as long as did females. Females often mated for several days after their last eggs were spawned. The reason for this behaviour remains obscure. In another experiment large differences in partner size reduced the fertilization efficiency. Fertilisation was most successful when the female/male length ratio was 1.05-1.14.