Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"behavioral isolation"”.
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MATING COSTS, MALE CHOICE DISPLACEMENT, AND THE EFFECTS ON HYBRIDIZATION AND SPECIATION IN THE HAWAIIAN CRICKET LAUPALA (SUBFAMILY:TRIGONIDIINAE)
… on the degree of genetic differentiation and behavioral isolation between the species. If there is significant and non-combinable genetic variation between species, but behavioral isolation between the two incipient taxa is incomplete and allows hybrid offspring to be produced, these hybrid …
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Linking ecological divergence and reproductive isolation: a tale of two killifish
… ecological selection also confer reproductive isolation, ecological speciation occurs readily (Boughman 2001; Kirkpatrick and Ravigne 2002; Gavrilets 2004). However, when the genes under ecological selection are independent of the genes conferring reproductive isolation, alleles for RIBs must …
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Speciation and the evolution of male breeding coloration in darters
… mechanisms of sexual selection and reproductive isolation in two closely related, ecologically and behaviorally similar species: the rainbow darter (Etheostoma caeruleum) and the orangethroat darter (E. spectabile). First, I quantified variation in male breeding coloration across multiple …
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THE GENETIC BASIS OF INTERSPECIFIC FEMALE PREFERENCE IN DROSOPHILA SIMULANS
Behavioral differences between species have a genetic basis and contribute to species isolation. Genomic regions have been identified that influence female rejection of heterospecific males on the right arm of the third chromosome in Drosophila, however, no individual loci have been identified. …
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Noise and signal transmission properties as agents of selection in the vibrational communication environment
… Here I address how male and female E. binotata behaviorally respond to noise, and whether variation in plant transmission properties can promote divergent selection on vibrational mating signals. When presented with vibrational noise derived from wind males and females reduce their signaling …
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Female Preference and Prezygotic Isolation In the Fundulus Notatus Species Complex
<p>Understanding how reproductive isolation arises between closely related species is central to evolutionary research. Hybridization is widespread across taxa and shaped by interactions among environmental factors, evolutionary history, genetic compatibility, and behavior. These forces often …
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Behavioral and genomic patterns of evolution during speciation via reproductive and agonistic character displacement
… in areas of sympatry compared to allopatry. Behavioral isolation can potentially evolve among populations within a species as a correlated effect of RCD or ACD, termed cascade RCD (CRCD) or cascade ACD (CACD). My dissertation research integrated behavioral and genomic approaches to …
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Bighead and silver carp hybridization in the Mississippi River Basin: prevalence, distribution, and post-zygotic selection
… in the MRB is likely attributed to reproductive behavioral isolation or poor body condition, rather than genetic incompatibility. Overall, my findings provide a spatial and temporal examination of bighead and silver carp introgression in the MRB and demonstrate the importance of molecular and …
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Reinforcement and cascade reinforcement in the lucania system: the effects of experimental design, sex, and heterospecific pairings on mate preference
… processes is to compare levels of reproductive isolation between areas of sympatry and allopatry (Servedio and Noor 2003; Hoskin and Higgie 2010; Pfennig 2016). This often involves using behavioral assays and metrics to determine conspecific or native mate preference in the laboratory. Despite …