Insect predation on pike fry |
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| Authors: | H Le Louarn A Cloarec |
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| Institution: | Laboratoire ?Ecologie Hydrobiologique, INRA, Ecole Nationale Supérieure ?Agronomie, 65, rue de Saint-Brieuc, 35042 Rennes cédex, France;Ethologie-Evolution-Ecologie, CNRS UMR 373, Universitéde Rennes I, Campus de Beaulieu, 35042 Rennes cédex, France |
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| Abstract: | Laboratory tests evaluated the predatory impact of the macroinvertebrates Erythromma najas larvae (Odonata, Zygoptera: Coenagrionidae), Notonecta glauca (Heteroptera: Notonectidae), Ilyocoris cimicoides (Heteroptera: Naucoridae), Libellula depressa larvae (Odonata, Anisoptera: Libellulidae), Dytiscus marginalis larvae (Coleoptera: Dytiscidae) and Anax imperator larvae (Odonata, Anisoptera: Aeshnidae) on 3-, 12-, 21- and 30-day-old pike fry Esox lucius . All these insect predators captured and ate pike fry during the test, although the numbers killed varied among species. Dytiscus marginalis, Anax imperator and Notonecta glauca were the most Voracious predators. |
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| Keywords: | Esox lucius insect predators vulnerability |
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