Multi‐male group and bidirectional sex change in the gobiid fish, Trimma caudomaculatum
Multi‐male group and bidirectional sex change in the gobiid fish, Trimma caudomaculatum
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戈壁鱼 Trimma caudomaculatum 的多雄性群体和双向性别变化
DOI：
10.1007/s10228-018-0631-x
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发表时间：
2018
影响因子：
1.2
通讯作者：
Tomoki Sunobe
中科院分区：
文献类型：
--
作者：
Sayo Tomatsu;Keita Ogiso;Kazuya Fukuda;Mayumi Deki;Shin‐Ichi Dewa;Hisaya Manabe;Makoto Sakurai;Akihiko Shinomiya;Tomoki Sunobe
戈壁鱼 Trimma caudomaculatum 群居。我们研究了该物种的群体结构、交配系统和双向性别变化。检查的四组包含两名以上的男性。雄性明显大于雌性。通过在水族箱中观察，雄性占据巢穴，雌性前往巢穴产卵。虽然没有特定的配对关系，但雄性会与多个雌性交配。因此，这个物种建立了多雄性群体。在实验中，25 只雌性中，有 4 只体型较大的雌性将性别转变为雄性。四只雄性中最小的雄性变成了雌性。
The gobiid fish,Trimma caudomaculatum,lives in groups. We investigated group structure, mating system and bidirectional sex change of this species. Four groups examined contained more than two males. The males were significantly larger than the females. By the observations in aquarium, the males occupied a nest and the females visited the nest for spawning. While there was no specific pair bond, the males mated with multiple females. Hence, this species establishes multi-male groups. In the experiments, four larger females had changed sex to male among 25 females. The smallest male changed to female in the group of four males.