Patterns of hind-wing degeneration in Japanese riffle beetles (Coleoptera: Elmidae)

Title:

Patterns of hind-wing degeneration in Japanese riffle beetles (Coleoptera: Elmidae)

Creator:

Masakazu Hayashi, Song, Simon D., and Sota, Teiji

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:6985869a-5143-4c5e-a275-ef8d4959687f
uuid:6985869a-5143-4c5e-a275-ef8d4959687f

Subject:

Zoologie, zoologie, entomologie, Coleoptera, Elmidae, aquatic beetle, body shape, body size, dimorphism, flightlessness, 2, and 59

Type:

article, články, model:article, and TEXT

Description:

We conducted a molecular phylogenetic analysis based on mitochondrial cytochrome oxidase subunit I and nuclear 28S rRNA gene sequences of species of Japanese elmids (23 species from 12 genera) and examined the hind-wings of 24 species in order to determine the incidence of hind-wing degeneration among species and the presence of dimorphic species with respect to hind-wing degeneration. Based on the molecular phylogenetic analysis, we determined that the previously separated winged and wingless species, Stenelmis vulgaris and S. miyamotoi, and Leptelmis gracilis and L. parallela, are two forms of the same species. Of the 24 species whose hind wings were studied, we found apterous (3 species of Zaitzeviaria), brachypterous (2 species of each of Optioservus and Paramacronychus) and dimorphic species (2 species as above) in separate clades of the phylogeny. These were the smallest or medium-sized species. Dimorphic species occurred in mid- to downstream areas and used reeds and wood as substrates. The percentage of species with hind-wing degeneration (wingless or dimorphic) was high among the species (29%) studied compared to the perceived percentage for temperate beetles (<10%). Thus, we found that the degeneration of hind wings has occurred repeatedly in these elmid species. However, we identified only ambiguous habitat and life history correlates of hind-wing degeneration, and the adaptive significance of hind-wing degeneration in these species of elmids remains unclear., Masakazu Hayashi, Simon D. Song, Teiji Sota., 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:4

Harvested from:

CDK

Metadata only:

false