Olfactory Recognition of Urine Signals in Dominance Fights Between Male Lobster, Homarus Americanus
Olfactory Recognition of Urine Signals in Dominance Fights Between Male Lobster, Homarus Americanus
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雄性龙虾、美洲白鹤之间的统治地位争夺中尿液信号的嗅觉识别
DOI：
10.1163/156853998792640440
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发表时间：
1998
期刊：
影响因子：
1.3
通讯作者：
C. Karavanich
中科院分区：
文献类型：
--
作者：
J. Atema;C. Karavanich
美洲龙虾（Homarus americanus）的优势等级的维持是基于最近一场战斗的失败者对优势动物的认可。据推测，化学信号是这种识别的基础。成年雄性龙虾在不熟悉的动物之间进行最初的拳击比赛。同一对选手又连续进行了 3 场比赛。在第一个实验中，治疗动物在第 2-4 次战斗之前损伤其外侧和内侧触角的主要嗅觉受体细胞，而对照动物则接受假损伤。对照组第 2-4 次打斗的持续时间明显短于受损动物之间打斗的持续时间。在第二个实验中，雄性配对再次被允许在第一次战斗中建立主导关系。在第二次战斗中，通过在治疗动物中使用导管来阻止两只动物的尿液释放，而对照组则佩戴假导管。同样，对照动物第二次打斗的持续时间明显短于治疗动物。总之，这些实验表明，触角感知到的尿液携带的化学信号会减少随后几天雄性统治者战斗的持续时间和攻击性，因为第一次战斗的失败者在闻到已知统治者的尿液时几乎立即退缩。
The maintenance of dominance hierarchies in the American lobster (Homarus americanus) is based on recognition of the dominant animal by the loser of a recent fight. It is hypothesized that chemical signals are the basis of this recognition. Adult male lobsters were paired for initial boxing matches between unfamiliar animals. The same pairs were re-matched for 3 more consecutive fights. In the first experiment, treatment animals had their primary olfactory receptor cells of the lateral and medial antennules lesioned before fights 2-4 and control animals received sham lesions. The durations of fights 2-4 for control pairs were significantly shorter than the durations of fights between lesioned animals. In the second experiment, male pairs were again allowed to establish a dominance relationship in a first fight. During second fights, urine release by both animals was prevented by the use of catheters in treatment animals while control pairs wore sham catheters. Again, durations of the second fights of control animals were significantly shorter than those of treatment animals. Together, these experiments indicate that urine-carried chemical signals, perceived by the antennules, reduce the duration and aggression of male dominance fights on subsequent days because the loser of the first fight backs off almost immediately when he smells the urine of the known dominant.