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Variation in metabolic rate during low tide aerial exposure in the Asian shore crab Hemigrapsus sanguineus
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Variation in metabolic rate during low tide aerial exposure in the Asian shore crab Hemigrapsus sanguineus
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Journal Article
Variation in metabolic rate during low tide aerial exposure in the Asian shore crab Hemigrapsus sanguineus
2024
Overview
Intertidal animals deal with physical gradients daily that create stressful conditions across the shore. These physical gradients influence the physiological performance of organisms, requiring responses that may differ with height on the shore. We examined the respiratory response to aerial exposure in the invasive Asian shore crab
Hemigrapsus sanguineus
during periods of low tide emersion using two field experiments. The first experiment simultaneously measured respiration of individuals collected from different heights on the shore, which had therefore been emersed for different lengths of time. The second experiment measured respiration of individuals collected at different times from the same tidal height. Respiration rates of crabs in both experiments increased immediately after emersion, nearly doubling by and peaking at ~ 1.5 h of aerial exposure, before decreasing again over the next 1.5 h. These results suggest that the energetic cost of low tide exposure is greatest shortly after emersion during the first half of the typical low tide period, but then decreases thereafter. These respiration patterns facilitate the broad intertidal distribution of this species on rocky shores throughout its range.
Publisher
Springer Berlin Heidelberg,Springer,Springer Nature B.V
Subject
/ Biomedical and Life Sciences
/ Crabs
/ Exposure
/ Height
/ Low tide
/ Marine & Freshwater Sciences
/ Shores
/ Tides
/ Zoology
