COMPETITION AND COEXISTENCE IN 2 MEDITERRANEAN HERMIT-CRABS, CALCINUS-ORNATUS (ROUX) AND CLIBANARIUS-ERYTHROPUS (LATREILLE) (DECAPODA, ANOMURA)
COMPETITION AND COEXISTENCE IN 2 MEDITERRANEAN HERMIT-CRABS, CALCINUS-ORNATUS (ROUX) AND CLIBANARIUS-ERYTHROPUS (LATREILLE) (DECAPODA, ANOMURA)
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DOI：
10.1016/0022-0981(90)90072-k
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发表时间：
1990-01-01
影响因子：
2
通讯作者：
GHERARDI, F
中科院分区：
文献类型：
--
作者：
GHERARDI, F
在实验室研究了两种地中海寄居蟹，Calcinus ornatus （Roux）和Clibanarius erythropus (Latreille)，以研究“共存问题”的某些方面（Hazlett, 1981）。有证据表明，这些同域物种之间不存在竞争。首先，尽管它们都使用相同类型和大小的甲壳，但这两个物种所占据的甲壳在细节上有所不同，Calcinus更喜欢表皮覆盖的甲壳。二是两种选择的微生境不同，对生理胁迫表现出不同的生理抵抗能力：沙蚕对脱水和极端温度、盐度的抵抗能力强于沙蚕。第三，从行为的角度来看，Clibanarius比Calcinus更具移动性，这导致空壳的开发速度更快，并且表现出更大的聚集倾向。反过来，聚类可以通过触发链式反应来增强有益的种内壳交换的可能性；然而，这样的偶数是罕见的。相反，尽管这两个物种似乎说着相同的“语言”，但种间壳转换和优势从属关系都不存在。
Two species of Mediterranean hermit crabs, Calcinus ornatus (Roux) and Clibanarius erythropus (Latreille) were studied in the laboratory to examine some aspects of the "coexistence problem" (Hazlett, 1981). Evidence suggests that no competition exists between these sympatric species. First, although they both use the same type and size of sheels, the two species occupy shells which differ in detail, Calcinus preferring epibiotic-covered shells. Second, the two species selected different microhabitats and showed different physiological resistance to physical stress: Clibanarius could resist dehydration and extremes of temperature and salinity better than Calcinus. Third, from the behavioural point of view, Clibanarius was more mobile than Calcinus, which resulted in faster exploitation of empty shells, and exhibited a greater tendency to aggregate. In turn, clustering may enhance the possibility of beneficial intraspecific shell exchange by triggering off a chain reaction; such an even, however, is rare. Conversely, neither interspecific shell switchin nor dominance-subordinance relationships existed, although the two species seem to speak the same "language".