Phenotypic pattern over centric fusion clinal variation in the water-hyacinth grasshopper, Cornops aquaticum (Orthoptera: Acrididae)

Title:

Phenotypic pattern over centric fusion clinal variation in the water-hyacinth grasshopper, Cornops aquaticum (Orthoptera: Acrididae)

Creator:

Colombo, Pablo C and Remis, María I

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:427ea83f-cce5-46d1-8163-a39144b76b40
uuid:427ea83f-cce5-46d1-8163-a39144b76b40
issn:1210-5759
doi:10.14411/eje.2018.029

Subject:

rovnokřídlí, Orthoptera, Acrididae, Cornops aquaticum, centric fusions, grasshoppers, chromosomal clines, morphometric effects, 2, and 59

Type:

model:article and TEXT

Format:

print, počítač, and online zdroj

Description:

The water-hyacinth grasshopper, Cornops aquaticum, occurs in freshwater environments in the New World between latitudes 23°N and 35°S. At the southernmost margin of this distribution the populations are polymorphic for three centric fusions (Robertsonian translocations). The frequencies of these chromosome rearrangements increase southwards and the recombination in structural homozygotes and heterozygotes diminishes both along the middle and lower courses of the Paraná River. In the present paper we report a similar cline along the southward flowing Uruguay River. In addition, we report the morphological effects of two of these centric fusion polymorphisms, namely the fusions between chromosomes 2 and 5 of the standard complement (fusion 2/5) and chromosomes 3 and 4 (fusion 3/4) and extend this study to the Uruguay River. There is a strong inverse correlation of fusion frequency with temperature, which indicates that these polymorphisms may be related to increased tolerance of colder climates in this originally tropical species, or some other correlated variable. This study is a further example of chromosomal clines correlated with latitude and is one of a few examples of chromosome polymorphisms associated with phenotypic effects. Finally, it indicates ways of using this species for controlling pests., Pablo C. Colombo, María I. Remis., and Obsahuje bibliografii

Language:

English

Rights:

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

Source:

European Journal of Entomology | 2018 Volume:115 | Number:1

Harvested from:

CDK

Metadata only:

false