Published September 18, 2017
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Overwintering Sites Might not be Safe Haven for Hippodamia undecimnotata (Schneider) (Coleoptera: Coccinellidae)
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Susset, Eline C., Hemptinne, Jean-Louis, Magro, Alexandra (2017): Overwintering Sites Might not be Safe Haven for Hippodamia undecimnotata (Schneider) (Coleoptera: Coccinellidae). The Coleopterists Bulletin 71 (3): 556-564, DOI: 10.1649/0010-065X-71.3.556, URL: http://dx.doi.org/10.1649/0010-065x-71.3.556
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- urn:lsid:plazi.org:pub:FFB9BD09E9453B4FFFF3DD54FFA6FF83
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- Figure: 10.5281/zenodo.5377293 (DOI)
- Figure: 10.5281/zenodo.5377297 (DOI)
- Figure: 10.5281/zenodo.5377299 (DOI)
- Figure: 10.5281/zenodo.5377301 (DOI)
References
- Hippodamia undecimnotata (Schneider) is an interesting lady beetle model to address whether or not aggregation sites offer suitable conditions for survival. It performs short as well as longdistance migrations, and it hibernates in huge groups at the base of prominent objects isolated at the summit of promontories at low and high altitudes (Hagen 1962; Hodek et al. 1993; Hodek 2012). In France, H. undecimnotata experiences a long period of diapause from autumn until the following spring (Hagen 1962; E. Susset, personal observation). Once on top of promontories, it aggregates within specific small spaces, or microsites, such as crevices in rocks, vegetation, and dead trees or even telephone poles (Hodek 2012). In our study, we investigated whether or not abiotic conditions (temperature and relative humidity) inside these overwintering aggregation microsites are 1) suitable for lady beetle survival and 2) favorable to the proliferation of ectoparasitic fungi.
- There are significant early works on the diapause habits of lady beetles, above all the seminal work of Hodek and his colleagues (reviewed in Hodek 2012 and Ceryngier 2015). However, to our knowledge, this is the first study to record abiotic conditions on an hourly base, throughout the diapause period, inside three widely separated overwintering aggregation microsites.