Feeding habits of the white-spotted boxfish Ostracion meleagris reveal a strong preference for colonial ascidians
Feeding habits of the white-spotted boxfish Ostracion meleagris reveal a strong preference for colonial ascidians
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白斑箱鲀 Ostracion meleagris 的摄食习性揭示了对群体海鞘的强烈偏好
DOI：
10.1007/s10228-021-00800-x
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发表时间：
2021
影响因子：
1.2
通讯作者：
Yoichi Sakai
中科院分区：
文献类型：
--
作者：
Yuki Koide;Yoichi Sakai
箱鲀（介形目）是底栖动物，主要食用珊瑚礁上的固着生物，如被囊动物。海鞘被囊类含有多种毒素，除了箱鲀外，很少受到珊瑚鱼的捕食。然而，海鞘被囊动物的重要性还没有得到充分的研究，在摄食生态学的箱鲀。我们进行了实地调查，以调查日本南部珊瑚礁上白斑箱鱼的食性。光共生海鞘主要贡献的boxfish饮食，并观察到海鞘的殖民地经常被咬的boxfish在调查期间。白天，进食的箱鱼在所研究珊瑚礁的岩石浅水区的家园范围内移动，其中栖息着Didemnidae科的光共生海鞘群落，其密度高于周围区域，包括位于数百米的产卵地离岸。箱鲀的家域重叠相当大，但种内激动的相互作用很少发生在女性之间，可能是由于丰富的海鞘殖民地。在整个研究期间，没有观察到其他类型的鱼试图以珊瑚礁上的海鞘群落为食，除了同源的Ostracion candulus。这些结果表明，箱鲀强烈依赖于光共生海鞘作为一个竞争力较低的食物资源，有限的分布模式的光共生海鞘在浅水附近的海岸可以是一个重要因素，在促进产卵迁移的箱鲀。
Boxfishes (Ostraciidae) are known to be benthivores and mainly consume sessile organisms on reefs, such as tunicates. Ascidian tunicates contain various toxins and seldom suffer from predation by reef fishes, except for boxfishes. However, the importance of ascidian tunicates has not been sufficiently examined in the feeding ecology of boxfishes. We conducted field surveys to investigate the feeding habits of the white-spotted boxfishOstracion meleagrison the reefs of southern Japan. Photosymbiotic ascidians predominantly contributed to the boxfish diet, and observed colonies of ascidians were bitten frequently by the boxfish during the survey. During the day, the feeding boxfish moved within their home ranges in a rocky, shallow zone of the studied reefs, which harbored photosymbiotic ascidian colonies of the family Didemnidae at higher densities than in the surrounding zones, including the spawning sites that were located hundreds of meters offshore. Boxfish home ranges overlapped considerably, but intraspecific agonistic interactions rarely occurred among the females, likely due to the abundance of ascidian colonies. No other types of fish were observed to make attempts to feed on the ascidian colonies on the reef throughout the study period, except for a congenerOstracion cubicus. These results suggest that the boxfish strongly rely on the photosymbiotic ascidians as a less-competitive food resource, and the limited distribution pattern of photosymbiotic ascidians in shallow water near shore can be an important factor in promoting a spawning migration in the boxfish.
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DOI：
--
发表时间：
1960
期刊：
影响因子：
--
作者：
R. W. Hiatt;D. W. Strasburg
通讯作者：
D. W. Strasburg
珊瑚礁鱼类的繁殖
DOI：
--
发表时间：
1984
期刊：
影响因子：
--
作者：
R. Thresher
通讯作者：
R. Thresher
DOI：
10.2307/1446123
发表时间：
1955
期刊：
Species diversity : an international journal for taxonomy, systematics, speciation, biogeography, and life history research of animals
影响因子：
--
作者：
J. E. Randall;G. Allen;R. Steene
通讯作者：
R. Steene
影响因子：
3
作者：
Dionisio-Sese, ML;Maruyama, T;Miyachi, S
通讯作者：
Miyachi, S
DOI：
10.15027/41241
发表时间：
1976
期刊：
Journal of the Faculty of Fisheries and Animal Husbandry,Hiroshima University
影响因子：
--
作者：
K. Gushima;Y. Murakami
通讯作者：
Y. Murakami