Publikation:

Vertical migration patterns of the different larval instars of Chaoborus flavicans and the influence of dissolved oxygen concentrations

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2018

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Fernandez, Jorge Encinas

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http://nbn-resolving.de/urn:nbn:de:bsz:352-2-19oe8rhx9flk63
DOI (zitierfähiger Link)
https://doi.org/10.1139/cjfas-2017-0157
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Canadian Journal of Fisheries and Aquatic Sciences. 2018, 75(7), pp. 1142-1150. ISSN 0706-652X. eISSN 1205-7533. Available under: doi: 10.1139/cjfas-2017-0157

Zusammenfassung

Here we investigate the diel vertical migration (DVM) of the different larval stages of Chaoborus flavicans between spring and summer in two different lakes and three different years. Specific attention is given to the influence of the vertical distribution of dissolved oxygen (DO) on the DVM of the different larval instars. To our knowledge, this study is the first that combines continuous observations of DVM of C. flavicans with continuous measurements of DO distributions over several months, allowing the assessment of changes in DVM due to the development of hyperoxic conditions in the deep water of lakes. With ontogenetic development, C. flavicans larvae increase their sensitivity to changes in light intensity and their tolerance to low oxygen conditions. Our results suggest that the physiological changes of C. flavicans larvae are adaptations to seasonal changes in DO, improving migration abilities to enable utilization of hypoxic and anoxic waters to avoid predation. Interannual change in the abundance and vertical distribution of phytoplankton affecting DO concentrations was sufficient to alter DVM patterns of C. flavicans larvae between years.

Zusammenfassung in einer weiteren Sprache

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570 Biowissenschaften, Biologie

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ISO 690WEISSER, Manuel, Hilmar HOFMANN, Jorge Encinas FERNANDEZ, Frank PEETERS, 2018. Vertical migration patterns of the different larval instars of Chaoborus flavicans and the influence of dissolved oxygen concentrations. In: Canadian Journal of Fisheries and Aquatic Sciences. 2018, 75(7), pp. 1142-1150. ISSN 0706-652X. eISSN 1205-7533. Available under: doi: 10.1139/cjfas-2017-0157
BibTex
@article{Weisser2018-07Verti-41751,
  year={2018},
  doi={10.1139/cjfas-2017-0157},
  title={Vertical migration patterns of the different larval instars of Chaoborus flavicans and the influence of dissolved oxygen concentrations},
  number={7},
  volume={75},
  issn={0706-652X},
  journal={Canadian Journal of Fisheries and Aquatic Sciences},
  pages={1142--1150},
  author={Weisser, Manuel and Hofmann, Hilmar and Fernandez, Jorge Encinas and Peeters, Frank}
}
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