Physiological Responses of Largemouth Bass, Micropterus salmoides, Exposed to Salinity

1990 ◽  
Vol 47 (12) ◽  
pp. 2358-2363 ◽  
Author(s):  
M. R. Meador ◽  
W. E. Kelso
Keyword(s):  
Osmotic Stress ◽  
Ion Transport ◽  
Freshwater Fish ◽  
Largemouth Bass ◽  
Laboratory Experiments ◽  
Micropterus Salmoides ◽  
Physiological Responses ◽  
Plasma Chemistry ◽  
Elevated Plasma ◽  
Active Ion Transport

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.

scholarly journals Effectiveness of Livewell Additives on Largemouth Bass Survival

2011 ◽  
Vol 2 (1) ◽  
pp. 22-28 ◽  
Author(s):  
Kenneth G. Ostrand ◽  
Michael J. Siepker ◽  
David H. Wahl
Keyword(s):  
Water Temperature ◽  
Largemouth Bass ◽  
Laboratory Experiments ◽  
Field Experiments ◽  
Micropterus Salmoides ◽  
Fish Mortality ◽  
Ambient Water ◽  
Fish Size ◽  
Ambient Water Temperature ◽  
Delayed Mortality

Abstract Livewell conditions during competitive angling events are thought to affect fish mortality. We examined the effects of livewell additives on initial and delayed mortality of largemouth bass Micropterus salmoides. We applied three treatments (salt, ice, or salt and ice) to livewells during tournaments conducted on lakes in Illinois, United States, as well as in laboratory and pond experiments designed to examine the effects of fish size and ambient water temperature on mortality. Fish were collected after tournament weigh-in procedures were completed and monitored for delayed mortality every 24 h for 5 d. Initial mortality did not differ among livewell additives during these field experiments. Although delayed mortality was high (35%), it was not significantly different among livewells that contained salt (56%), ice (48%), ice and salt (40%), and controls (30%). Additives administered during the laboratory experiments, at cool water temperatures, resulted in significantly lower delayed mortalities than those observed during the field experiments when ambient water temperatures were warmer. Initial and delayed mortality did not differ among livewell additives during the laboratory experiments. Larger fish in field experiments had significantly greater delayed mortality than smaller fish in the pond experiments even though initial and delayed mortality did not differ among livewell additives. Our results suggest that fish size and ambient water temperature have a greater influence on delayed mortality observed during competitive angling events than the specific livewell additives studied here.

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

2019 ◽  
Vol 76 (6) ◽  
pp. 998-1005 ◽  
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.

Glochidial metamorphosis of the freshwater mussel Lampsilis cardium (Bivalvia: Unionidae) on larval tiger salamanders, Ambystoma tigrinum ssp. (Amphibia: Ambystomidae)

1997 ◽  
Vol 75 (3) ◽  
pp. 505-508 ◽  
Author(s):  
G. Thomas Watters
Keyword(s):  
North America ◽  
Largemouth Bass ◽  
Laboratory Experiments ◽  
Freshwater Mussels ◽  
Micropterus Salmoides ◽  
Freshwater Mussel ◽  
Ambystoma Tigrinum ◽  
Tiger Salamanders ◽  
Lampsilis Cardium

Larval tiger salamanders (Ambystoma tigrinum ssp.) were infected with glochidia of the freshwater mussel Lampsilis cardium in laboratory experiments. At 20–21 °C, metamorphosis occurred from 9 to 39 days, primarily between 9 and 17 days. The percentage of attached glochidia that metamorphosed varied from 0.27 to 15.7%. Metamorphosis on the salamanders occurred more quickly than on a known piscine host, largemouth bass (Micropterus salmoides), but a smaller percentage of the total attached glochidia metamorphosed. The role of amphibians as hosts of freshwater mussels in North America has not been addressed. Recognizing such a relationship could have important consequences for our understanding of mussel zoogeography.

Pathogeny of disease characterized by swollen liver and spleen in largemouth bass (Micropterus salmoides)

2013 ◽  
Vol 18 (3) ◽  
pp. 654-659 ◽  
Author(s):  
Dongmei MA ◽  
Guocheng DEND ◽  
Junjie BAI ◽  
Shengjie LI ◽  
Xiaoyan JIANG ◽  
...  
Keyword(s):  
Largemouth Bass ◽  
Micropterus Salmoides

scholarly journals In vitro Osmotic Stress Memory in Chrisanthemum hybridum: Structural and Physiological Responses

2017 ◽  
Vol 27 (2) ◽  
pp. 161-169 ◽  
Author(s):  
Lidiia Samarina ◽  
Valentina Malyarovskaya ◽  
Yulija Abilfazova ◽  
Natalia Platonova ◽  
Kristina Klemeshova ◽  
...  
Keyword(s):  
Osmotic Stress ◽  
Relative Water Content ◽  
Soluble Protein ◽  
Growth Parameters ◽  
Physiological Responses ◽  
Proline Content ◽  
Stress Exposure ◽  
Stress Memory ◽  
Relative Water

Structural and physiological responses of chrysanthemum to repeated osmotic stress were studied. Plants were cultured for 2 weeks (for each stress1 and stress 2) on half MS supplemented with mannitol 100 mM (Treatment I) and 200 mM (Treatment II). First stress inhibited growth parameters stronger than second stress in treatment I. In treatment II both stress events strongly inhibited growth parameters of micro‐shoots. Proline content exceeded control 6 ‐ 8 times after 1st stress, and 2 ‐ 5 times after the 2nd stress in treatments I and II, respectively. Soluble protein was accumulated in leaves during both stress exposures, and 2 ‐ 2.5 times exceeded control after the 2nd stress. Relative water content in both treatments increased after the 2nd stress exposure. In treatment II chlorophyll а and carotenoids contents were 8.78 and 4.62 mg/g comparing to control (4.21 and 2.25 mg/g, respectively) after the 1st stress. But after the 2nd stress there was no difference with control.Plant Tissue Cult. & Biotech. 27(2): 161-169, 2017 (December)

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