PHYSIOLOGICAL AND MORPHOLOGICAL ADAPTATIONS OF ADULT UCA SUBCYLINDRICA TO SEMI-ARID ENVIRONMENTS'
PHYSIOLOGICAL AND MORPHOLOGICAL ADAPTATIONS OF ADULT UCA SUBCYLINDRICA TO SEMI-ARID ENVIRONMENTS'
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成年 UCA 亚圆柱形对半干旱环境的生理和形态适应
DOI：
10.2307/1541179
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
J. N. Cameron
中科院分区：
文献类型：
--
作者：
N. Rabalais;J. N. Cameron
Salinity tolerance, osmotic and ionic regulation abilities, desiccation tolerance, and gill morphometry of Uca subcylindrica, which inhabits semi-arid supratidal areas, were compared with more typically intertidal fiddler crabs, especially U. longisignalis. Salinity tolerance was less in U. subcylindrica (2—90%o) than in U. longisignalis (0.08— 1lO%o). Blood osmolality and sodium and chloride concentrations were regulated over a wide range of salinities in both species, but U. subcylindrica maintained a smaller gradient against the external medium at the lowest salinity at which it survived and at the higher salinities. The osmoregulatory responses were contrary to predictions based on field distributions, but U. subcylindrica generally survived desiccation longer and always tolerated a greater percent body water loss than U. longisignalis, U. rapax, and U. panacea. Differences in gill morphometrics among the four species were consistent with features accompanying increasing terrestriality.
