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  Where to stay by night and day: Size-specific and seasonal differences in horizontal and vertical distribution of Chaoborus flavicans larvae.

Voss, S., & Mumm, H. (1999). Where to stay by night and day: Size-specific and seasonal differences in horizontal and vertical distribution of Chaoborus flavicans larvae. Freshwater Biology, 42(2), 201-213.

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Voss, S., H. Mumm, 1999, S-37449.pdf (Verlagsversion), 2MB
 
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Voss, S., H. Mumm, 1999, S-37449.pdf
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 Urheber:
Voss, S.1, Autor           
Mumm, H.1, Autor           
Affiliations:
1Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976547              

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Schlagwörter: Chaoborus; predator avoidance; horizontal distribution; vertical distribution; diel vertical migration
 Zusammenfassung: 1. Data on the distributions of pelagic and benthic Chaoborus flavicans larvae were gathered in 1994 and tested for their agreement with the predator avoidance hypotheses. The development of all Chaoborus Life stages, as well as the horizontal and vertical distribution in the four larval instars, was followed from May until October. We expected the largest larvae to dwell deeper by day, thus avoiding predation by visually foraging fish. 2. In agreement with this prediction body size increased with daytime depth, and this was true both between and within instars. The migration amplitude consequently increased with larval instar. 3. There was also evidence for horizontal migration, mainly in the third but also in the fourth instar. 4. Along a horizontal transect with increasing depth, locations with many benthic larvae had fewer pelagic larvae. Oxygen concentration was a good predictor of maximum benthic larval depth for most of the season but failed to predict their distribution in autumn.

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Sprache(n): eng - English
 Datum: 1999-09
 Publikationsstatus: Erschienen
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 Identifikatoren: eDoc: 119816
Anderer: 1803/S 37449
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Titel: Freshwater Biology
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 42 (2) Artikelnummer: - Start- / Endseite: 201 - 213 Identifikator: ISSN: 0046-5070