The Genetic Basis of Differences in Growth and Behavior of Specialist and Generalist Herbivore Species: Selection on Hybrids of Heliothis virescens and Heliothis subflexa (Lepidoptera)

Evolution ◽  
1996 ◽  
Vol 50 (2) ◽  
pp. 831 ◽  
Author(s):  
A. L. Sheck ◽  
F. Gould
Keyword(s):  
Heliothis Virescens ◽  
Genetic Basis ◽  
Species Selection ◽  
Heliothis Subflexa ◽  
Generalist Herbivore ◽  
Herbivore Species ◽  
And Behavior

Genetic Basis of Resistance to Cry1Ac and Cry2Aa in Heliothis virescens (Lepidoptera: Noctuidae)

2005 ◽  
Vol 98 (4) ◽  
pp. 1357-1368 ◽  
Author(s):  
Linda J. Gahan ◽  
Yun-Tao Ma ◽  
Mary Lynn MacGregor Coble ◽  
Fred Gould ◽  
William J. Moar ◽  
...  
Keyword(s):  
Heliothis Virescens ◽  
Genetic Basis ◽  
Lepidoptera Noctuidae

scholarly journals Co-evolving wing spots and mating displays are genetically separable traits in Drosophila

2019 ◽  
Author(s):  
Jonathan H. Massey ◽  
Gavin R. Rice ◽  
Anggun Firdaus ◽  
Chi-Yang Chen ◽  
Shu-Dan Yeh ◽  
...  
Keyword(s):  
X Chromosome ◽  
Genetic Basis ◽  
Critical Role ◽  
Genetic Switch ◽  
Behavioral Traits ◽  
Wing Pigmentation ◽  
Physical Linkage ◽  
Sexual Traits ◽  
Male Specific ◽  
And Behavior

AbstractThe evolution of sexual traits often involves correlated changes in morphology and behavior. For example, in Drosophila, divergent mating displays are often accompanied by divergent pigment patterns. To better understand how such traits co-evolve, we investigated the genetic basis of correlated divergence in wing pigmentation and mating display between the sibling species Drosophila elegans and D. gunungcola. Drosophila elegans males have an area of black pigment on their wings known as a wing spot and appear to display this spot to females by extending their wings laterally during courtship. By contrast, D. gunungcola lacks both of these traits. Using Multiplexed Shotgun Genotyping (MSG), we identified a ∼440 kb region on the X chromosome that behaves like a genetic switch controlling the presence or absence of male-specific wing spots. This region includes the candidate gene optomotor-blind (omb), which plays a critical role in patterning the Drosophila wing. The genetic basis of divergent wing display is more complex, with at least two loci on the X chromosome and two loci on autosomes contributing to its evolution. Introgressing the X-linked region affecting wing spot development from D. gunungcola into D. elegans reduced pigmentation in the wing spots but did not affect the wing display, indicating that these are genetically separable traits. Consistent with this observation, broader sampling of wild D. gunungcola populations confirmed the wing spot and wing display are evolving independently: some D. gunungcola males preformed wing displays similar to D. elegans despite lacking wing spots. These data suggest that correlated selection pressures rather than physical linkage or pleiotropy are responsible for the coevolution of these morphological and behavioral traits. They also suggest that the change in morphology evolved prior to the change in behavior.

scholarly journals The genetic architecture of phenotypic diversity in the betta fish (Betta splendens)

2021 ◽  
Author(s):  
Wanchang Zhang ◽  
Hongru Wang ◽  
Debora Yoshihara Caldeira Brandt ◽  
Beijuan Hu ◽  
Junqing Sheng ◽  
...  
Keyword(s):  
Wild Species ◽  
Genetic Architecture ◽  
Genetic Basis ◽  
Genetic Model ◽  
Phenotypic Diversity ◽  
Betta Splendens ◽  
Multiple Traits ◽  
High Quality ◽  
And Behavior ◽  
High Quality Genome

The Betta fish displays a remarkable variety of phenotypes selected during domestication. However, the genetic basis underlying these traits remain largely unexplored. Here, we report a high-quality genome assembly and re-sequencing of 727 individuals representing diverse morphologies of the betta fish. We show that current breeds have a complex domestication history with extensive introgression with wild species. Using GWAS, we identify the genetic basis of multiple traits, including several coloration phenotypes, sex-determination which we map to DMRT1, and the long-fin phenotype which maps to KCNJ15. We identify a polygenic signal related to aggression with many similarities to human psychiatric traits, involving genes such as CACNB2 and DISC1. Our study provides a resource for developing the Betta fish as a genetic model for morphology and behavior in vertebrates.

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