Farbanpassung entsprechend der jeweiligen Substratf�rbung bei Acrida turrita

Ergene, Saadet

doi:10.1007/bf00298943

Cited by 19 publications

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are several Orthoptera species in which the development of brown or green phenotypes is induced by the environment. Phenotypic plasticity in the green–brown polymorphism has been demonstrated for multiple species of the subfamilies Cyrtacanthacridinae (Rowell and Cannis 1971 ; Tanaka 2004 ; Tanaka et al 2012 ), Oedipodinae (Ergene 1955 ; Rowell 1970 ), and Acridinae (Ergene 1950 , 1952a , b ; Okay 1956 ). High humidity tends to favor green, high temperature and high population density favor brown, and substrate color favors matches (Dearn 1990 ; Rowell 1972 ).…”

Section: Introductionmentioning

confidence: 99%

Simple inheritance of color and pattern polymorphism in the steppe grasshopper Chorthippus dorsatus

2021

View full text Add to dashboard Cite

The green–brown polymorphism of grasshoppers and bush-crickets represents one of the most penetrant polymorphisms in any group of organisms. This poses the question of why the polymorphism is shared across species and how it is maintained. There is mixed evidence for whether and in which species it is environmentally or genetically determined in Orthoptera. We report breeding experiments with the steppe grasshopper Chorthippus dorsatus, a polymorphic species for the presence and distribution of green body parts. Morph ratios did not differ between sexes, and we find no evidence that the rearing environment (crowding and habitat complexity) affected the polymorphism. However, we find strong evidence for genetic determination for the presence/absence of green and its distribution. Results are most parsimoniously explained by three autosomal loci with two alleles each and simple dominance effects: one locus influencing the ability to show green color, with a dominant allele for green; a locus with a recessive allele suppressing green on the dorsal side; and a locus with a recessive allele suppressing green on the lateral side. Our results contribute to the emerging contrast between the simple genetic inheritance of green–brown polymorphisms in the subfamily Gomphocerinae and environmental determination in other subfamilies of grasshoppers. In three out of four species of Gomphocerinae studied so far, the results suggest one or a few loci with a dominance of alleles allowing the occurrence of green. This supports the idea that brown individuals differ from green individuals by homozygosity for loss-of-function alleles preventing green pigment production or deposition.

show abstract