Temporal variation in elytral colour polymorphism in Hippodamia variegata (Coleoptera: Coccinellidae)

Title:

Temporal variation in elytral colour polymorphism in Hippodamia variegata (Coleoptera: Coccinellidae)

Creator:

Honek, Alois, Zdenka Martinková, Saska, Pavel, and A. F. G. (Anthony Frederick George) Dixon

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:78af62ce-d918-4bc6-bbd1-33251713eb8e
uuid:78af62ce-d918-4bc6-bbd1-33251713eb8e

Subject:

Zoologie, zoologie, entomologie, Coccinellidae, Hippodamia variegata, Adonia, lady beetle, polymorphism, elytra, thermoregulation, climate, 2, and 59

Type:

article, články, model:article, and TEXT

Description:

Lady beetles (Coleoptera: Coccinellidae) are a classical group for studying the mechanisms that determine local and temporal trends in colour polymorphism. Here we report long term trends in variation in the percentage of different morphs in a population of Hippodamia variegata (Goeze) at Štúrovo, Slovakia (47°48´N, 18°43´E). The morphs differ in the number and location of the spots on their elytra. Beetles were sampled from stands of herbaceous plants using a standard method each year in August over a period of 74 years from 1937 to 2011. Twenty two morphs (out of 74 possible) were recorded in a total sample of 6,984 individuals. Four dominant morphs made up 90% of the total sample and varied in their annual frequency independently of one another. Frequency of "pale" morphs (0–3 spots per elytra), supposedly favoured by a warm climate, increased from 1981 to 2000s’ during a period of climate warming, but only after a decrease that took place between 1937 and 1981, which did not parallel a change in climate. Moreover, the differences in the extent of the melanization of the elytral surface are too small to significantly affect thermoregulation in the different morphs. Therefore, the results presented do not provide unequivocal support for climate change determining the long term trends in the variation in the proportions of the different morphs., Alois Honek ... [et al.]., and Obsahuje seznam literatury

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Source:

European Journal of Entomology | 2012 Volume:109 | Number:3

Harvested from:

CDK

Metadata only:

false