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Temperature-dependent benefits of bacterial exposure in embryonic development of Daphnia magna resting eggs

Mushegian, Alexandra A. and Burcklen, Elodie and Schär, Tobias M. M. and Ebert, Dieter. (2016) Temperature-dependent benefits of bacterial exposure in embryonic development of Daphnia magna resting eggs. Journal of Experimental Biology , 219 (6). pp. 897-904.

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Abstract

The environments in which animals develop and evolve are profoundly shaped by bacteria, which affect animals both indirectly through their role in biogeochemical processes and directly through antagonistic or beneficial interactions. The outcomes of these activities can differ according to environmental context. In a series of laboratory experiments with diapausing eggs of the water flea Daphnia magna, we manipulated two environmental parameters, temperature and presence of bacteria, and examined their effect on development. At elevated temperatures (≥ 26 °C), resting eggs developing without live bacteria had reduced hatching success and correspondingly higher rates of severe morphological abnormalities compared with eggs with bacteria in their environment. The beneficial effect of bacteria was strongly reduced at 20 °C. Neither temperature nor the presence of bacteria affected directly developing parthenogenetic eggs. The mechanistic basis of this effect of bacteria on development is unclear, but these results highlight the complex interplay of biotic and abiotic factors influencing animal development after diapause.
Faculties and Departments:05 Faculty of Science
05 Faculty of Science > Departement Umweltwissenschaften
05 Faculty of Science > Departement Umweltwissenschaften > Zoologie
05 Faculty of Science > Departement Umweltwissenschaften > Zoologie > Evolutionary Biology (Ebert)
UniBasel Contributors:Ebert, Dieter and Mushegian, Alexandra and Schär, Tobias
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Company of Biologists
ISSN:0022-0949
e-ISSN:1477-9145
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:30 Aug 2017 10:40
Deposited On:30 Aug 2017 10:40

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