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Old 01-04-2010, 11:43 AM
archiver archiver is offline
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Default Seasonal movement and habitat use by striped bass in the Combahee River, South Carolina

Seasonal movement and habitat use by striped bass in the Combahee River, South Carolina
Author(s)

BJORGO Kimberly A. (1) ; ISELY J. Jeffery (2) ; THOMASON Christopher S. (3) ;
Author(s) Affiliation(s)

(1) Department of Aquaculture, Fisheries, and Wildlife, Clemson University, Clemson, South Carolina 29634-0372, ETATS-UNIS
(2) United States Geological Survey, Biological Resources Division, South Carolina Cooperative Fish and Wildlife Research Unit, Department of Aquaculture, Fisheries, and Wildlife, Clemson University, Clemson, South Carolina 29634-0372, ETATS-UNIS
(3) South Carolina Department of Natural Resources, Fisheries District 6, 10095 Dunbarton Road, Barnwell, South Carolina 29812, ETATS-UNIS

Abstract

Adult striped bass Morone saxatilis (N = 30, 656-906 mm total length) were captured by electrofishing during January-March 1998 in the Combahee River, South Carolina, and fitted with radio transmitters. Their exact locations were recorded biweekly through December. From January to early April, striped bass were located in the tidally influenced lower region of the river in water temperatures ranging from 9C to 18C. The fish then moved an average of 38.5 km upstream from late April to the end of May when water temperatures ranged from 18C to 26C. Striped bass remained in the upper region of the river from late May to September when water temperatures were as much as 5C lower than in the river's lower regions. Striped bass began to move downstream and were spread throughout the river during September and October in water temperatures ranging from 19C to 27C. Combahee River striped bass appear to follow a migratory pattern typical of other southern striped bass stocks. Habitat preference appears to be strongly influenced by temperature. Combahee River temperatures are stable and remain close to the preferred temperatures of striped bass during summer extremes. Therefore, unlike northern populations, southern populations are more likely to remain within riverine habitat during the summer months. Discrete thermal refugia, such as springs, apparently are not used or are absent in the Combahee River. It is possible that striped bass in the Combahee River depend on the entire upper region of the river as a thermal refuge.
Journal Title

Transactions of the American Fisheries Society ISSN 0002-8487 CODEN TAFSAI
Source

2000, vol. 129, no6, pp. 1281-1287 (26 ref.)
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bass, carolina, combahee, habitat, movement, river, seasonal, south, striped

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