The effects of noise disturbance from various recreational boating activities common to inland waters on the cardiac physiology of a freshwater fish, the largemouth bass (Micropterus salmoides)

Plasma osmotic and electrolyte concentrations as well as branchial Na+/K+ and Mg++ ATPase activities were determined in the field for largemouth bass, Micropterus salmoides, from a brackish marsh and freshwater lake in southcentral Louisiana. Laboratory experiments were conducted to evaluate plasma chemistry and gill ATPase activities of largemouth bass from both locations exposed to 0, 4, 8, and 12‰ salinity. No significant differences in physiological responses were detected between marsh and freshwater largemouth bass exposed to 0, 4, or 12‰. Exposure to 12‰ salinity resulted in osmotic stress in largemouth bass from both locations. At 8‰, marsh largemouth bass had significantly higher plasma solutes and lower gill ATPase activities than freshwater fish. Different physiological responses by marsh and freshwater largemouth bass during exposure to 8‰ salinity indicated that marsh largemouth bass have adapted to environments of variable salinity by reducing active ion transport and tolerating elevated plasma son levels.

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The largemouth bass Micropterus salmoides (Lacepède, 1802): impacts of a powerful freshwater fish predator outside of its native range

Reviews in Fish Biology and Fisheries ◽

10.1007/s11160-019-09570-2 ◽

2019 ◽

Vol 29 (3) ◽

pp. 639-652 ◽

Cited By ~ 6

Author(s):

Felipe Walter Pereira ◽

Jean Ricardo Simões Vitule

Keyword(s):

Freshwater Fish ◽

Largemouth Bass ◽

Micropterus Salmoides ◽

Native Range ◽

Fish Predator

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Coarse woody habitat does not predict largemouth bass young of year mortality during the open-water season

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/cjfas-2018-0050 ◽

2019 ◽

Vol 76 (6) ◽

pp. 998-1005 ◽

Cited By ~ 2

Author(s):

Jacob P. Ziegler ◽

Colin J. Dassow ◽

Stuart E. Jones ◽

Alexander J. Ross ◽

Christopher T. Solomon

Keyword(s):

Mortality Rate ◽

Freshwater Fish ◽

Largemouth Bass ◽

Micropterus Salmoides ◽

Open Water ◽

Mortality Rates ◽

In Situ Tests ◽

Coarse Woody Habitat ◽

The Relationship

Littoral structure is often assumed to provide refuge to young of year (YOY) freshwater fish species, but empirical in situ tests of this relationship are lacking. We estimated mortality rates of YOY largemouth bass (Micropterus salmoides) over the open-water season in 13 lakes in northern Wisconsin and Michigan using repeated snorkel surveys. Our goal was to test the hypothesis that mortality rate is negatively related to the abundance of littoral coarse woody habitat, which ranged from 3 to 1500 pieces of wood per kilometre of shoreline in these lakes. Instantaneous mortality rates were well-constrained and ranged from 0.04 to 0.19 among the 13 lakes. Mortality was not related to coarse woody habitat abundance. Our results suggest that the relationship between coarse woody habitat and YOY mortality might not be as strong or universal as is often assumed.

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