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dc.contributor.author Capps, Krista A. en_US
dc.contributor.author Turner, Caroline B. en_US
dc.contributor.author Booth, Michael T. en_US
dc.contributor.author Lombardozzi, Danica L. en_US
dc.contributor.author McArt, Scott H. en_US
dc.contributor.author Chai, David en_US
dc.contributor.author Hairston Jr., Nelson G. en_US
dc.date.accessioned 2012-06-06T00:45:44Z en_US
dc.date.available 2012-06-06T00:45:44Z en_US
dc.date.issued 2009-01 en_US
dc.identifier.citation Capps KA, Turner CB, Booth MT, Lombardozzi DL, McArt SH, Chai D, Hairston Jr, NG. Behavioral Responses of the Endemic Shrimp Halocaridina rubra (Malacostraca: Atyidae) to an Introduced Fish, Gambusia affinis (Actinopterygii: Poeciliidae) and Implications for the Trophic Structure of Hawaiian Anchialine Ponds. Pac Sci 63(1): 27-38. en_US
dc.identifier.issn 0030-8870 en_US
dc.identifier.uri http://hdl.handle.net/10125/22744 en_US
dc.description v. ill. 23 cm. en_US
dc.description Quarterly en_US
dc.description.abstract In the Hawaiian Islands, intentionally introduced exotic fishes have been linked to changes in native biodiversity and community composition. In 1905, the mosquito fish Gambusia affinis was introduced to control mosquitoes. Subsequently, G. affinis spread throughout the Islands and into coastal anchialine ponds. Previous studies suggest that presence of invasive fishes in anchialine ponds may eliminate native species, including the endemic shrimp Halocaridina rubra. We examined effects of G. affinis on H. rubra populations in anchialine ponds on the Kona-Kohala coast of the island of Hawai‘i. In the presence of G. affinis, H. rubra exhibited a diel activity pattern that was not seen in fishless ponds. Shrimp in ponds with fish were active only at night. This pattern was evident in anchialine ponds and in laboratory experiments. In laboratory predation experiments, G. affinis preferentially consumed smaller H. rubra, and in the field the H. rubra collected from invaded sites were larger than those from fishless ponds. Analysis of trophic position using stable isotope analyses showed that feeding of H. rubra was not significantly distinct from that of snails, assumed to feed at trophic level 2.0 on epilithic algae, but G. affinis was slightly omnivorous, feeding at tropic level 2.2. The mosquito fish diet was apparently composed primarily of algae when the defensive behavior of H. rubra made them substantially unavailable as prey. The effect of successful establishment of G. affinis on shrimp behavior has the potential to alter abundance of benthic algae and processing and recycling of nutrients in anchialine pond ecosystems. en_US
dc.format.extent 12 p. en_US
dc.language.iso en-US en_US
dc.publisher Honolulu, University of Hawaii Press en_US
dc.relation.ispartofseries vol. 63, no. 1 en_US
dc.subject.lcsh Natural history--Periodicals. en_US
dc.subject.lcsh Science--Periodicals en_US
dc.subject.lcsh Natural history--Pacific Area--Periodicals. en_US
dc.title Behavioral Responses of the Endemic Shrimp Halocaridina rubra (Malacostraca: Atyidae) to an Introduced Fish, Gambusia affinis (Actinopterygii: Poeciliidae) and Implications for the Trophic Structure of Hawaiian Anchialine Ponds. en_US
dc.type Article en_US
dc.type.dcmi Text en_US

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