Effects of rapid changes in temperature on two estuarine crustaceans

Burton, Dennis T.; Capizzi, Thomas; Margrey, Stuart L.; Wakefield, W. Waldo

doi:10.1016/0141-1136(81)90041-6

Cited by 2 publications

(1 citation statement)

References 19 publications

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“…The Pacific Panama populations did not demonstrate any distinguishable correlation. Evidence is frequently found for compensatory acclimation or, more commonly, correlation of direct physiological response with distribution, based on environmental factors (GRAHAM, 1971;SHICK, 1972;BURTON et al, 1981;FERRARIS, 1981;VERNBERG, 1983). VERNBERG and VERNBERG demonstrated metabolic adaptation in temperate versus tropical zone congeners of Uca, particularly with respect to low temperatures (reviews: F. J. VERNBERG, 1983,1984).…”

Section: Iscussionmentioning

confidence: 99%

Oxygen Uptake During Repeated Exposure to Temperature Change: Physiological Divergence in Panamanian Cognate Pairs and Latitudinally Distant Populations of Decapod Crustacea

Ferraris¹,

Norenburg

1997

Marine Ecology

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The emergence of the Isthmus of Panama subdivided the amphi-American biota. In the present study, Pacific and Atlantic populations of four cognate pairs of crabs were used to discern whether exposure to different thermal regimes in habitats, in the putative absence of gene flow, has resulted in physiological divergence. Populations that potentially form a common genetic pool were also used; these were populations of the Atlantic Panama cognate that occur in Belize and Florida. Decreases in water temperature occur periodically in Pacific Panama and Florida, but not in Atlantic Panama or Belize. In this study, physiological divergence in oxygen uptake was assessed in response to repeated exposure to either control and decreased temperature or control and increased temperature. Results indicate that, in only some of the genera tested, exposure to decreases in habitat temperature has resulted in divergence. Partial support is found for the corollary that adaptation to an environment with periods of decreased temperature results in reduced compensation during exposure to elevated temperature. ProblemTwo hypotheses are addressed in the present study. (1) Since their geologically recent separation, physiological divergence has occurred between Panamanian cognate species of crabs, relative to exposure to different temperature regimes and (2) among geographically distant populations physiological divergence has

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Section: Iscussionmentioning

confidence: 99%