Foraging on cyanobacteria by copepods : responses to chemical defenses and resource abundance
Research examines the responses of copepods to a variety of cyanobacteria of differing size, morphology and toxicity. Results show how the behavioral flexibility of copepods can be adaptive in lakes with significant populations of cyanobacteria.
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| Published in | Ecology (Durham) Vol. 72; no. 5; pp. 1820 - 1834 |
|---|---|
| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Washington, DC
Ecological Society of America
01.10.1991
Brooklyn Botanic Garden, etc |
| Subjects | |
| Online Access | Get full text |
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| Abstract | Research examines the responses of copepods to a variety of cyanobacteria of differing size, morphology and toxicity. Results show how the behavioral flexibility of copepods can be adaptive in lakes with significant populations of cyanobacteria. |
|---|---|
| AbstractList | We used laboratory feeding trials to examine the responses of copepods to a variety of cyanobacteria of differing size, morphology, and toxicity. Diaptomus birgei exhibited behaviors ranging from strong preferences for some taxa of cyanobacteria to almost complete rejection of other taxa when allowed to feed in low-concentration mixtures of a high-quality green alga, Chlamydomonas reinhardi , and each of 16 taxa of cyanobacteria. Our results demonstrate the overriding importance of chemical factors. Copepods exhibited very high clearance rates for some filaments and colonies but rejected morphologically similar strains shown to contain potentially toxic compounds. Responses to resource abundance exhibited three patterns, each consistent with the assumptions and predictions of an optimal diet model. Research examines the responses of copepods to a variety of cyanobacteria of differing size, morphology and toxicity. Results show how the behavioral flexibility of copepods can be adaptive in lakes with significant populations of cyanobacteria. |
| Author | MOXTER, F DEMOTT, W. R |
| Author_xml | – sequence: 1 givenname: W. R surname: DEMOTT fullname: DEMOTT, W. R organization: Indiana univ.-Purdue univ. at Fort Wayne, crooked lake biological stn., Fort Wayne IN 46805, United States – sequence: 2 givenname: F surname: MOXTER fullname: MOXTER, F organization: Indiana univ.-Purdue univ. at Fort Wayne, crooked lake biological stn., Fort Wayne IN 46805, United States |
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| Copyright | 1992 INIST-CNRS Copyright Ecological Society of America Oct 1991 |
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| DOI | 10.2307/1940981 |
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| Keywords | Crustacea Freshwater environment Feeding behavior Toxicity Arthropoda Morphology Cyanobacteria Trophic factor Copepoda Bacteria Defense mechanism Invertebrata |
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| Snippet | Research examines the responses of copepods to a variety of cyanobacteria of differing size, morphology and toxicity. Results show how the behavioral... We used laboratory feeding trials to examine the responses of copepods to a variety of cyanobacteria of differing size, morphology, and toxicity. Diaptomus... |
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| SubjectTerms | Animal and plant ecology Animal, plant and microbial ecology Animals Aquatic life Autoecology Bacteria Biological and medical sciences Chlorophyta Copepoda Cyanophyta Diaptomus birgei Food Freshwater Fundamental and applied biological sciences. Psychology Invertebrates Protozoa. Invertebrata |
| Title | Foraging on cyanobacteria by copepods : responses to chemical defenses and resource abundance |
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