Phenotypic pattern over centric fusion clinal variation in the water-hyacinth grasshopper, Cornops aquaticum (Orthoptera: Acrididae)
| Autor: | Pablo C. Colombo, Maria Isabel Remis |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Orthoptera CENTRIC FUSIONS orthoptera Chromosomal translocation 010603 evolutionary biology 01 natural sciences Latitude Acrididae purl.org/becyt/ford/1 [https] Ciencias Biológicas Genética y Herencia cornops aquaticum ACRIDIDAE Cornops aquaticum MORPHOMETRIC EFFECTS centric fusions acrididae Grasshopper purl.org/becyt/ford/1.6 [https] GRASSHOPPERS CHROMOSOMAL CLINES biology CORNOPS AQUATICUM Chromosome Cline (biology) biology.organism_classification chromosomal clines ORTHOPTERA 010602 entomology QL1-991 Evolutionary biology Insect Science morphometric effects Zoology CIENCIAS NATURALES Y EXACTAS grasshoppers |
| Zdroj: | European Journal of Entomology, Vol 115, Iss 1, Pp 303-311 (2018) CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| Popis: | 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. Fil: Colombo, Pablo Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina Fil: Remis, Maria Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina |
| Databáze: | OpenAIRE |
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