Effects of stream hydraulic conditions on foraging strategies of false dace, Pseudorasbora parva, in the lentic ecosystem.

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dc.contributor.authorPark, Bae Kyungen_US
dc.contributor.authorPark, Seok Soonen_US
dc.date.accessioned2005-10-08en_US
dc.date.accessioned2009-06-02T03:53:27Z
dc.date.available2005-10-08en_US
dc.date.available2009-06-02T03:53:27Z
dc.date.issued2005-10-08en_US
dc.description.abstractThe effects of current velocity on the foraging behavior of false dace, Pseudorasbora parva, were examined in a zero velocity (stagnant) condition, and at four flow rates (5, 7, 11 and 16 cm per second). In stagnant water, the fish displayed a cruise-searching pattern, but they used a drift-feeding foraging tactic in flowing water. The shape of the transverse field of reaction field was elliptical in the stagnant condition, whereas their downward regions were restricted under the flowing conditions. The fish had a blind spot oriented directly in front of their reaction field. Although the relative swimming speed (with considering the against current velocity) increased with increasing flow velocity, the absolute search speed (ignore the against current velocity) showed about 1.2 fish body length per second at stagnant water and low flow velocity. The results of feeding rates showed stop-and wait (driff-feeding) foraging strategy is more efficient in flowing water because prey drift directly towards the fish and prey easily detected.en_US
dc.description.affiliationDepartment of Environmental Science and Engineering, Ewha Womans University, 11-1, Daehyun-Dong, Seodaemun-Gu, Seoul 120-750, South Korea.en_US
dc.identifier.citationPark BK, Park SS. Effects of stream hydraulic conditions on foraging strategies of false dace, Pseudorasbora parva, in the lentic ecosystem. Journal of Environmental Biology. 2005 Oct; 26(4): 635-43en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/113384
dc.language.isoengen_US
dc.source.urihttps://www.geocities.com/j_environ_biol/en_US
dc.subject.meshAnimalsen_US
dc.subject.meshAppetitive Behavior --physiologyen_US
dc.subject.meshCyprinidae --physiologyen_US
dc.subject.meshFeeding Behavior --physiologyen_US
dc.subject.meshRiversen_US
dc.subject.meshVideo Recordingen_US
dc.subject.meshWater Movementsen_US
dc.titleEffects of stream hydraulic conditions on foraging strategies of false dace, Pseudorasbora parva, in the lentic ecosystem.en_US
dc.typeComparative Studyen_US
dc.typeJournal Articleen_US
dc.typeResearch Support, Non-U.S. Gov'ten_US
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