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  Plurimodal emergence and plurivoltinism of Central European populations of Nemurella pictetii (Plecoptera: Nemouridae)

Wolf, B., & Zwick, P. (1989). Plurimodal emergence and plurivoltinism of Central European populations of Nemurella pictetii (Plecoptera: Nemouridae). Oecologia, 79(4), 431-438.

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 Creators:
Wolf, Beate1, Author           
Zwick, Peter1, Author           
Affiliations:
1Limnological River Station Schlitz, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976546              

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Free keywords: Plecoptera; Biovoltinism; Growth-rate; Emergence-threshold; Thermal demand
 Abstract: Nemurella pictetii Klapalek, 1900 (Plecoptera: Nemouridae) has bi- or trimodal emergence patterns in Central Europe. The emergence threshold temperature is about 8°C. Egg development is direct. The slopes of regressions describing its temperature dependence do not differ significantly between English, Norwegian and German populations, but the intercepts (i.e., the incubation period at 0°C) do. Regular sampling of a benthic population near Schlitz, in Hesse, West Germany, showed that part of the offspring of the first emergence group grew quickly and produced a second emergence peak. The remaining offspring of the first generation grew more slowly and over-wintered, together with the offspring of the second emergence peak. This population exhibits partial bivoltinism. The potential for bivoltinism was also shown in laboratory rearings of a German population at a constant 14°C: many eggs yielded normal adults after about 120 days.

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Language(s): eng - English
 Dates: 1989
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 244681
Other: 0751
 Degree: -

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Title: Oecologia
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 79 (4) Sequence Number: - Start / End Page: 431 - 438 Identifier: ISSN: 00298549