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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Interspecific and intraspecific interactions between fiddler crabs Minuca pugnax (mud fiddler) and Leptuca pugilator (sand fiddler) influence species' burrowing behavior
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Interspecific and intraspecific interactions between fiddler crabs Minuca pugnax (mud fiddler) and Leptuca pugilator (sand fiddler) influence species' burrowing behavior

机译：Fiddler螃蟹Minuca Pugnax（Mud Fiddler）和Leptuca Pugilator（Sand Fiddler）影响物种的洞穴行为之间的间隙和有条不息的互动

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Species occupying similar habitat and functional niches will necessarily have some external force driving differentiation between them, thus creating complementarity, or otherwise face high competition for resources. In order to fully understand the role of each species in an ecosystem and their contributions to ecosystem function, it is important to understand the nature of these interactions. However, for species that occur in the same spatial niche and appear to occupy redundant functional niches, it is often difficult to distinguish between complementarity and redundancy and therefore to designate the functional role each species plays. We used two cooccurring fiddler crab species that are presumed to be functionally similar, Leptuca pugilator (sand fiddler crab) and Minuca pugnax (mud fiddler crab), to explore how species interactions may influence burrowing behavior. We ran manipulative mesocosm experiments to assess potential effects of species interactions on the number and location of burrows as well as the burrowing behavior of the crabs. Overall, sand fiddler crabs dug more burrows on average than mud fiddlers across all experiments while mud fiddlers were choosier about the location and sediment type of their burrows, suggesting complementarity in burrowing between the two species. Burrow counts in heterospecific treatments suggest that neither species interfered with nor enhanced burrow creation by the other species. However, increased burrow occupancy by mud fiddlers in the presence of sand fiddlers and aggressive behavior by mud fiddlers toward sand fiddlers suggest that mud fiddler crabs may receive refuge benefits from sand fiddler crabs through antagonistic rather than facilitative interactions. Thus, species-specific habitat use and interspecific interactions are likely influencing the role each species plays as a burrower and marsh ecosystem engineer.
机译：占用类似栖息地和功能性的物种必然有一些外力推动它们之间的差异，从而产生互补性，或以其他方式面对资源的高竞争。为了充分了解每个物种在生态系统中的作用及其对生态系统功能的贡献，重要的是要了解这些相互作用的性质。然而，对于在同一空间利基发生的物种并且似乎占用冗余功能性核心，通常难以区分互补性和冗余，因此指定每个物种扮演的功能作用。我们使用了两种共同捕获螃蟹蟹类，被认为是功能相似的leptuca铜匠（砂包蟹）和Minuca Pugnax（Mud Fiddler Crab），以探讨物种的互动如何影响穴居行为。我们ran进行操纵中核科学实验，以评估物种相互作用对沟渠的数量和地点的潜在影响以及螃蟹的穴居行为。总的来说，沙夹螃蟹平均挖出更多的洞穴，而不是在所有实验中平均挖掘，而泥泞的小女子是关于他们的洞穴的位置和沉积物类型的选择，这表明两种物种之间的挖掘互补。洞穴计数异质特异性治疗表明，两种物种都没有受到其他物种的增强的洞穴创作。然而，在泥泞的文件的存在下，泥泞的小女士在沙滩的存在和泥泞行为上增加了洞穴占用者，泥泞的欺诈者朝着沙滩师表示，泥驴螃蟹可能通过拮抗的抗敌人而不是促进的互动来获得避难所的益处。因此，物种特定的栖息地使用和间隙相互作用可能影响每个物种作为击球机和沼泽生态系统工程师的作用。

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