No evidence for learned mating discrimination in male
Background Since females often pay a higher cost for heterospecific matings, mate discrimination and species recognition are driven primarily by female choice.
Kandul Ekaterina V+3 more
doaj +1 more source
Temporalchanges in relative frequencies of third chromosome inversions of Drosophila pseudoobscura in Mexican populations [PDF]
Variations in relative frequencies of third chromosome inversions during 1974-2000 in three populations of D. pseudoobscura from Mexico were analyzed. The general constitution of these populations is formed from ten up to 15 different inversions, been ...
de la Rosa Esther Ma+3 more
core +1 more source
Acorns as Breeding Sites for \u3ci\u3eChymomyza Amoena\u3c/i\u3e (Loew) (Diptera: Drosophilidae) in Virginia and Michigan [PDF]
Chymomyza amoena is the only chymomyzid fly emerging from white oak acorns in Virginia. An average of 2-3 adult flies emerged from a single acorn in July while emergence declined to 0.4 adults/acorns in September.
Band, Henretta Trent
core +2 more sources
Geographical changes in relative frequency of inversions in chromosome III of Drosophila pseudoobscura among natural populations from Mexico [PDF]
Chromosomal polymorphism in natural populations of Drosophila pseudoobscura have been broadly studied in the USA but scarcely in Mexico where only about 60 localities have been analyzed.
Salceda Víctor M.
core +1 more source
Meiotic crossing over ensures proper segregation of homologous chromosomes and generates genotypic diversity. Despite these functions, little is known about the genetic factors and population genetic forces involved in the evolution of recombination rate
Cara L. Brand+2 more
doaj +1 more source
Sex Bias and Maternal Contribution to Gene Expression Divergence in Drosophila Blastoderm Embryos. [PDF]
Early embryogenesis is a unique developmental stage where genetic control of development is handed off from mother to zygote. Yet the contribution of this transition to the evolution of gene expression is poorly understood.
Mathilde Paris+3 more
doaj +1 more source
Mating system manipulation and the evolution of sex-biased gene expression in Drosophila
Sexual selection on males is thought to favour male-biased gene expression. Here, Veltsos et al. experimentally evolve Drosophila pseudoobscura under different mating systems and, contrary to expectation, most often find masculinization of the ...
Paris Veltsos+4 more
doaj +1 more source
Inversion polymorphism in some natural populations of Drosophila pseudoobscura from central Mexico [PDF]
Samples of D. pseudoobscura were taken in seventeen localities in Central Mexico inside the parallels 18o - 20o N, with the purpose of determine the chromosomal polymorphism in the third of the different populations of this species.
Guzmán Judith+2 more
core +1 more source
The Elaborate Postural Display of Courting Drosophila persimilis Flies Produces Substrate-Borne Vibratory Signals. [PDF]
Sexual selection has led to the evolution of extraordinary and elaborate male courtship behaviors across taxa, including mammals and birds, as well as some species of flies.
Fabre, Caroline Cecile Gabrielle+1 more
core +2 more sources
Functional nonequivalence of sperm in Drosophila pseudoobscura. [PDF]
We report on a form of sperm polymorphism, termed polymegaly, that occurs in species of the Drosophila obscura group. Individual males of species in this group characteristically produce more than one discrete length of nucleated, motile sperm. Hypotheses suggested to explain the evolutionary significance of sperm polymorphism have been either ...
Rhonda R. Snook+2 more
openaire +3 more sources