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Movement behaviour of largemouth bass Micropterus salmoides in a South African impoundment

Movement behaviour of largemouth bass Micropterus salmoides in a South African impoundment The objectives of this study were to describe movements and area use patterns of largemouth bass Micropterus salmoides in relation to abiotic factors (water temperature, river inflow and water level). The study was conducted in the Kubusi arm of Wriggleswade Dam, Eastern Cape, South Africa where nine largemouth bass (310–385 mm FL) were surgically implanted with individually coded acoustic transmitters and monitored for nine months (May 2010 to January 2011) using an array of five moored acoustic data-logging receivers. The daily position occupied by largemouth bass was significantly affected by water temperature (P<0.001) and river inflow (P<0.001), whereas water level had no effect. Largemouth bass spent little or no time in the shallow river inlet areas when water temperature was <12.5 °C, but as water temperature increased, their utilisation of shallow areas increased significantly. The results from this study demonstrate the importance of environmental factors, particularly water temperature, on the movement of largemouth bass. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png African Zoology Taylor & Francis

Movement behaviour of largemouth bass Micropterus salmoides in a South African impoundment

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Movement behaviour of largemouth bass Micropterus salmoides in a South African impoundment

Abstract

The objectives of this study were to describe movements and area use patterns of largemouth bass Micropterus salmoides in relation to abiotic factors (water temperature, river inflow and water level). The study was conducted in the Kubusi arm of Wriggleswade Dam, Eastern Cape, South Africa where nine largemouth bass (310–385 mm FL) were surgically implanted with individually coded acoustic transmitters and monitored for nine months (May 2010 to January 2011) using an array of five...
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Publisher
Taylor & Francis
Copyright
© 2015 Zoological Society of Southern Africa
ISSN
2224-073X
eISSN
1562-7020
DOI
10.1080/15627020.2015.1040837
Publisher site
See Article on Publisher Site

Abstract

The objectives of this study were to describe movements and area use patterns of largemouth bass Micropterus salmoides in relation to abiotic factors (water temperature, river inflow and water level). The study was conducted in the Kubusi arm of Wriggleswade Dam, Eastern Cape, South Africa where nine largemouth bass (310–385 mm FL) were surgically implanted with individually coded acoustic transmitters and monitored for nine months (May 2010 to January 2011) using an array of five moored acoustic data-logging receivers. The daily position occupied by largemouth bass was significantly affected by water temperature (P<0.001) and river inflow (P<0.001), whereas water level had no effect. Largemouth bass spent little or no time in the shallow river inlet areas when water temperature was <12.5 °C, but as water temperature increased, their utilisation of shallow areas increased significantly. The results from this study demonstrate the importance of environmental factors, particularly water temperature, on the movement of largemouth bass.

Journal

African Zoology – Taylor & Francis

Published: Jul 3, 2015

Keywords: acoustic telemetry; alien invasive; ecology; flow; temperature

References

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