Catching the prey: Sampling juvenile fish and invertebrate prey fields of juvenile coho and Chinook salmon during their early marine residence

Publication year: 2010
Source: Fisheries Research, In Press, Accepted Manuscript, Available online 3 December 2010</br>
Richard D., Brodeur , Elizabeth A., Daly , Cassandra E., Benkwitt , Cheryl A., Morgan , Robert L., Emmett</br>
Marine diets of juvenile coho (Oncorhynchus kisutch) and Chinook salmon (O. tshawytscha) in the northern California Current are made up primarily of micronekton prey including juvenile fishes, adult euphausiids, and large crab megalopae. However, these animals are seldom caught in the conventional plankton gears used to define juvenile salmon prey fields in ocean salmon programs. Four types of sampling gears with various mouth openings and configurations were examined for ability to catch known juvenile salmon prey. Samples were examined for differences in species composition, relative biomass, length distribution, and taxonomic overlap with prey in the diets of salmon sampled concurrently....</br>

4th December 2010 07:13

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