Metabolic rates of Neomysis americana (Smith, 1873) (Mysida: Mysidae) from a temperate estuary vary in response to summer temperature and salinity conditions
Metabolic rates of Neomysis americana (Smith, 1873) (Mysida: Mysidae) from a temperate estuary vary in response to summer temperature and salinity conditions
复制标题
来自温带河口的美洲新鼠 (Neomysis americana) (Smith, 1873)(Mysida: Mysidae)的代谢率因夏季温度和盐度条件而异
DOI:
10.1093/jcbiol/ruaa031
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发表时间:
2020
影响因子:
1.1
通讯作者:
Woodland, Ryan J
中科院分区:
文献类型:
--
作者:
Chapina, Rosaura J;Rowe, Christopher L;Woodland, Ryan J
The mysidNeomysis americana(Smith, 1873) is native to shallow shelf waters and estuaries of the western Atlantic coast of North America. Despite the important role mysids such asN. americanaplay in estuarine ecosystems as both consumers and as prey for higher trophic levels, there is limited information on how metabolism influences their spatial ecology and habitat requirements. In tributaries of Chesapeake Bay, MD, USA, previous research has shown that summer water temperatures can approach the lethal upper tolerance limit forN. americana. We measured the per capita metabolic rate (µgO2min–1) ofN. americanafrom the upper Patuxent River near Benedict, MD, a tributary of Chesapeake Bay in the laboratory to evaluate the metabolic response to salinity and temperature conditions that mysids experience in natural habitats. Sex-specific and diel patterns in metabolic rate were quantified. Metabolic rates did not differ between night and day and there was no significant difference in metabolic rate between males and females, exclusive of gravid females. Metabolic rates were lowest in salinity treatments of 2 and 8 at 29 °C, and highest in the salinity 2 treatment at 22 °C. Only temperature had a statistically significant, albeit unexpected, effect. This study shows that the metabolic response ofN. americanato temperature and salinity conditions is complex and plastic, and that metabolic rates can vary 3–4 fold within realistic summer temperature and salinity conditions. As environmental conditions continue to change, understanding metabolic response of mysids to realistic salinity and temperature conditions is necessary for understanding their distributions in temperate estuaries.
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DOI:
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