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In situ feeding rate and diet selectivity in Tasmanian mysid species (Crustacea, Mysidacea)

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Metillo, EB and Ritz, DA and Swadling, KM (2007) In situ feeding rate and diet selectivity in Tasmanian mysid species (Crustacea, Mysidacea). Hydrobiologia, 589 (1). pp. 207-218. ISSN 0018-8158

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Abstract

We determined in situ feeding rates of
three co-occurring coastal mysid species using
[methyl-3H]-thymidine-labelled algal detritus
(Lessonia corrugata), NaH14CO3-labelled phytoplankton
(Isochrysis galbana) and zooplankton
(Artemia sp. nauplii). All three species showed a
wide and overlapping range of feeding rates on
the three food types, suggesting they were
broadly omnivorous. However, selectivity studies
often showed a strong preference for animal prey.
Although there was an overlap in the types of
food the mysids ingested, some degree of feeding
niche partitioning was demonstrated. Paramesopodopsis
rufa tended to be more carnivorous,
Tenagomysis tasmaniae fed least on zooplankton
and phytoplankton, and largely on algal detritus,
and Anisomysis mixta australis ingested few
zooplankters, and moderate amounts of algal
detritus and phytoplankton.

Item Type: Article
Keywords: Ecology - Mysids - Feeding - Radiolabelling - Artemia sp. - Algal detritus
Journal or Publication Title: Hydrobiologia
Page Range: pp. 207-218
ISSN: 0018-8158
Identification Number - DOI: 10.1007/s10750-007-0732-4
Additional Information:

The original publication is available at www.springerlink.com

Date Deposited: 28 Mar 2008 05:17
Last Modified: 18 Nov 2014 03:32
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