Response of Bighead Carp and Silver Carp to Repeated Water Gun Operation in an Enclosed Shallow Pond

Autor: Todd J. Severson, Ryan Adams, Michael J. Parsley, Nathan R. Jensen, Mark P. Gaikowski, Jason G. Romine, Tyson W. Hatton, Robert F. Gaugush
Rok vydání: 2015
Předmět:
Zdroj: North American Journal of Fisheries Management. 35:440-453
ISSN: 1548-8675
0275-5947
DOI: 10.1080/02755947.2015.1012279
Popis: The Bighead Carp Hypophthalmichthys nobilis and Silver Carp H. molitrix are nonnative species that pose a threat to Great Lakes ecosystems should they advance into those areas. Thus, technologies to impede Asian carp movement into the Great Lakes are needed; one potential technology is the seismic water gun. We evaluated the efficacy of a water gun array as a behavioral deterrent to the movement of acoustic-tagged Bighead Carp and Silver Carp in an experimental pond. Behavioral responses were evaluated by using four metrics: (1) fish distance from the water guns (D); (2) spatial area of the fish's utilization distribution (UD); (3) persistence velocity (Vp); and (4) number of times a fish transited the water gun array. For both species, average D increased by 10 m during the firing period relative to the pre-firing period. During the firing period, the spatial area of use within the pond decreased. Carp were located throughout the pond during the pre-firing period but were concentrated in the nort...
Databáze: OpenAIRE
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