Mysis relicta in Lake Michigan: abundances and relationships with their potential prey, Daphnia

J. T. Lehman, J. A. Bowers, R. W. Gensemer, G. J. Warren, D. K. Branstrator

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Diel vertical migration produced maximum concentrations in the thermocline at night of 1-10 mysids.m-3. Variation among replicates averaged 28% with a 3-net Tucker trawl and 19% with Puget Sound vertical closing nets. Mean areal abundances over 5 yr averaged 110 mysids.m-2 (range 25-645). Synoptic cruises from 43°N to 45°N during August indicated that densities were considerably greater offshore than inshore, and greater in the N than in the S. Although Mysis is potentially an important predator on Daphnia, differences in nighttime vertical distributions reduce encounters between Mysis and Daphnia during summer in Lake Michigan, such that Mysis exert mortality rates on Daphnia of <1.5% per day; the latter are in general <10% of the birth rates of Daphnia populations. -from Authors

Original languageEnglish (US)
Pages (from-to)977-983
Number of pages7
JournalCanadian Journal of Fisheries and Aquatic Sciences
Volume47
Issue number5
DOIs
StatePublished - Jan 1 1990

Fingerprint Dive into the research topics of 'Mysis relicta in Lake Michigan: abundances and relationships with their potential prey, Daphnia'. Together they form a unique fingerprint.

Cite this