Behavior of Four Species of Fiddler Crabs, Genus Uca, in Southeast Sulawesi, Indonesia
Behavior of Four Species of Fiddler Crabs, Genus Uca, in Southeast Sulawesi, Indonesia
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DOI：
10.1023/b:hydr.0000033093.84155.1d
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发表时间：
2004-07
期刊：
影响因子：
2.6
通讯作者：
J. Weis;P. Weis
中科院分区：
文献类型：
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作者：
J. Weis;P. Weis
我们研究了印度尼西亚卡勒杜帕岛上四种同域招潮蟹的行为。物种在活动水平、理毛、挖洞和取食方面的差异与其栖息地和食物有关。绿眼鱼生活在泥泞的红树林地区，不活跃，大部分时间都在原地取食。女性的进食速度比男性快 50%，并且花在进食上的时间也更多。 vocans 是粉砂海滩上的优势物种，非常活跃。它的进食速度大约是前一种螃蟹的两倍，雌性比雄性更快地进食，许多雌雄螃蟹在退潮时都会成群结队地在水边进食。在退潮期间，它们大部分时间都在进食，而在涨潮时，它们会从事更多种类的活动，包括维护洞穴。他们经常边走边喂食，并进行积极的互动。四方住在海滩边缘、码头旁的卵石带里。他们的进食速度在男女之间相当，但比美国慢。沃坎斯；它们主要以生长在码头上的丝状藻类为食，这些藻类提供了更好的食物，而且在涨潮时比落潮时进食得更快。他们花更多的时间进行挥手和其他与性有关的活动，并且很少有攻击性，除了满月的那一周。挖洞活动包括将挖出的泥球放置在距洞穴一定距离的地方，并重新排列它们。杜苏米耶里居住在海滩另一端的泥泞基质中。它们的摄食速度没有性别差异，而且它们将食物舀入嘴里的速度很慢，但摄食爪会多次捏住基质，从而在每一爪食物中积累更多的物质。
We studied the behaviors of four species of sympatric fiddler crabs on Kaledupa Island, Indonesia. Species differences in activity level, grooming, burrowing and feeding were related to their habitat and food.Uca chlorophthalmus, living in muddy mangrove areas, were inactive and spent most of the time feeding in place. Females fed 50% faster than males and spent more time feeding.U. vocanswas the dominant species at the beach in silty sand and was very active. Its feeding rate was about twice that of the former species, females fed more rapidly than males, and many crabs of both sexes fed in droves at the water’s edge during ebb tides. During ebb tides, they spent most of their time feeding, while at flood tide they engaged in a greater variety of activities, including burrow maintenance. They frequently walked while feeding and interacted aggressively.U. tetragononlived in a pebbly band along one edge of the beach, by a quay. Their feeding rate was comparable in both sexes and slower than that ofU. vocans; they fed largely on filamentous algae growing on the quay, which provides better food, and fed faster during flood tide than ebb tide. They spent more time in waving and other sex-related activities, and were seldom aggressive, except during the week of the full moon. Burrowing activities included placing excavated mud balls some distance away from their burrows and re-arranging them.U. dussumieriinhabited the other end of the beach in muddier substrate. They did not have sex differences in feeding rates and their rate of scooping food into their mouths was slow, but feeding claws made multiple pinches of the substrate, thus accumulating more material in each clawful of food.