Morphological variation and sex-biased frequency of wing dimorphism in the pygmy grasshopper Tetrix subulata (Orthoptera: Tetrigidae)

Title:

Morphological variation and sex-biased frequency of wing dimorphism in the pygmy grasshopper Tetrix subulata (Orthoptera: Tetrigidae)

Creator:

Steenman, Anja, Lehmann, Arne W., and Lehmann, Gerlind U.C.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:0edca771-c151-4951-9658-7e0a46ed08f8
uuid:0edca771-c151-4951-9658-7e0a46ed08f8

Subject:

Zoologie, zoologie, entomologie, Orthoptera, Caelifera, Tetrigidae, Tetrix subulata, pygmy grasshopper, polymorphism, polyphenism, wing-dimorphism, sex-biased frequency, 2, and 59

Type:

article, články, model:article, and TEXT

Description:

Dimorphism in wing length is well known in many insect species. It is generally believed that a trade-off between dispersal and reproduction exists, with the long-winged (LW) morph being a better disperser due to its superior flight capability. The short-winged (SW) morph is less mobile and it is hypothesised that females of this morph invest more of their energy reserves in producing offspring. We determined the variation in body and wing size in the pygmy grasshopper Tetrix subulata (Orthoptera: Tetrigidae). The results of the morphological study support the occurrence of two clearly distinct wing morphs in both sexes. SW individuals, especially males, were smaller and in accord with proposed developmental instability showed greater variability in body size than LW individuals. Using data for 700 wild-caught individuals from 10 populations, we demonstrate a variable frequency in the percentage of LW individuals, ranging from all-LW to all-SW populations, even if the LW morph is by far the most common morph in an area. The male-biased percentage of LW individuals recorded in intermediate populations supports a difference in the dispersal reproduction trade-off between the sexes., Anja Steenman, Arne W. Lehmann, Gerlind U. Lehmann., and Obsahuje seznam literatury

Language:

English

Rights:

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

Source:

European Journal of Entomology | 2013 Volume:110 | Number:3

Harvested from:

CDK

Metadata only:

false