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Articles 1 - 7 of 7
Full-Text Articles in Ecology and Evolutionary Biology
Evolution Of Endurance Running Genes Across Primates, Natalia T. Grube
Evolution Of Endurance Running Genes Across Primates, Natalia T. Grube
Theses and Dissertations
The endurance running hypothesis has emerged as a key idea to explain several unique anatomical, physiological, and genetic features of modern humans—among these features is the evolution of ACTN3 (Bramble & Lieberman 2004, Nature), a gene linked to human athletic performance. An additional gene linked to human endurance performance is ACE. Because endurance running is a uniquely human trait, I predicted that ACE and ACTN3 genes would be evolving adaptively in the human lineage when examined in a wider primatological framework. To test this I compiled ACE and ACTN3 genes from 14 primate species and phylogenetically tested if these genes …
Phylogenetic History Of The Amy Gene Cluster In Catarrhines, Christian M. Gagnon
Phylogenetic History Of The Amy Gene Cluster In Catarrhines, Christian M. Gagnon
Theses and Dissertations
This study phylogenetically analyzed 30 AMY-related genes from 11 primates. The results show the gradual expansion of the AMY gene family which could have allowed primates to adapt to various ecological landscapes and maximize energy intake from starch-rich foods in periods of food scarcity.
The Influence Of Phylogeny And Niche Differentiation On The Diets Of Malagasy Primates, Rebekka S. Hughes
The Influence Of Phylogeny And Niche Differentiation On The Diets Of Malagasy Primates, Rebekka S. Hughes
Theses and Dissertations
Previous studies have shown that haplorhine diet is affected by phylogeny; however, until now studies in Malagasy strepsirrhines were lacking. The evolution of differences in Malagasy primates’ diets appears to differ from the pattern shown in haplorhines. My results indicate that niche differentiation may be a stronger predictor of diet.
Ecological Niche Modeling Of The Genus Papio, Amanda J. Fuchs
Ecological Niche Modeling Of The Genus Papio, Amanda J. Fuchs
Theses and Dissertations
Ecological niche modeling investigates how climatic variables have influenced taxonomic diversity in Papio. Models performed well suggesting climatic variables influence the distribution of baboon species. Niche overlap among all possible pairs of taxa determined that species exhibited significantly different niches. The results of these models support a parapatric speciation scenario.
African Wild Dog, Lycaon Pictus, Coloration Patterns And Social Aggregation, Ayong J. Kim
African Wild Dog, Lycaon Pictus, Coloration Patterns And Social Aggregation, Ayong J. Kim
Theses and Dissertations
Packs of African wild dogs, Lycaon pictus, were analyzed for coloration patterns and social aggregation tendencies. Mapped locations determined if the coat patterns followed a geographic distribution that corresponded to Southern or Eastern phenotypic forms. Social aggregation tendencies were observed to determine grouping behavior presumably related to individuals’ roles.
Does Genotype Correlate With Phenotype? Evaluating Ruffed Lemur (Varecia Spp.) Color Vision Using Subject Mediated Automatic Remote Testing Apparatus (Smarta), Raymond Vagell
Theses and Dissertations
Ruffed lemur (Varecia spp.) color vision research was conducted using a multidisciplinary approach: psychophysics, genetic analysis, technology, and animal training. The behavioral manifestation of Varecia spp. trichromacy was shown using a touchscreen apparatus (SMARTA). Trichromats performed better than dichromats when discriminating red from green (G2 = 78.10, p < 0.001).
Investigating The Nest Sanitation Hypothesis In A Rejecter Species: Is Sanitation A Proximate Link, Pre-Adaptation, Or By-Product Of Egg Ejection?, Alec B. Luro
Theses and Dissertations
Nest sanitation, a behavior similar in motor pattern to egg ejection, has been proposed repeatedly as a potential pre-adaptation to foreign egg ejection in avian brood parasites hosts. We found no support for the sanitation hypothesis--therefore we suggest egg ejection may have evolved independently of sanitation.