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Seasonal drift and feeding periodicity during summer of the amphipod, Gammarus psuedolimnaeus

Journal of Freshwater Ecology

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DOI: 10.1080/02705060.2014.880386

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Abstract

Downstream drift of aquatic invertebrates is an important ecological process that varies temporally. Seasonal patterns of diel drift and diel feeding periodicity during summer of the amphipod Gammarus pseudolimnaeus were examined in a small stream in central New York. Seasonal trends in drift were similar with peak drift occurring from 2000 to 0400 h. Very little drift occurred during the day. Feeding intensity of G. pseudolimnaeus was greatest from 2000 to 0400 h and was significantly greater than at 0400 to 0800 h and 0800 to 1200 h. Previous research on feeding periodicity of this species found no evidence of periods of increased food consumption. Conflicting results between this study and earlier studies may be due to sampling drifting versus non-drifting amphipods.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Seasonal drift and feeding periodicity during summer of the amphipod, Gammarus psuedolimnaeus
Series title:
Journal of Freshwater Ecology
DOI:
10.1080/02705060.2014.880386
Volume
29
Issue:
2
Year Published:
2014
Language:
English
Publisher:
Taylor & Francis
Contributing office(s):
Great Lakes Science Center
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Country:
United States
State:
New York
County:
Cortland County
Other Geospatial:
Beaver Brook