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Full-Text Articles in Morphology
From Morphology To Machine Learning And Genomics: Understanding Phenotypic Variation In Wild Ducks, Sara Gonzalez
From Morphology To Machine Learning And Genomics: Understanding Phenotypic Variation In Wild Ducks, Sara Gonzalez
Open Access Theses & Dissertations
Understanding the genetic underpinning and distribution of phenotypic variation within and between divergent groups is core towards shedding light into how populations diverge and adapt, as well as how hybridization breaks or builds on these scenarios; and thus, central to evolutionary biology. In wild organisms, however, quantifying and linking phenotypic traits to underlying genetic processes, like mutation, gene expression, epigenetics and allele interactions, remains challenging. This difficulty arises from the complex interplay between morphology, environment, and gene regulation, as well as the logistical barriers of collecting and standardizing large-scale data across individuals and populations. As a result, researchers are increasingly …
Phylogenetics And Integrative Taxonomy Of African Water Snakes (Squamata: Colubridae: Grayia), Teslin Chaney
Phylogenetics And Integrative Taxonomy Of African Water Snakes (Squamata: Colubridae: Grayia), Teslin Chaney
Open Access Theses & Dissertations
Grayia is a genus of relatively large (1.5 - 2.5 m) aquatic Afrotropical snakes. Recent molecular phylogenies recovered Grayia in its own distinct subfamily (Grayiinae), which was strongly supported as the sister group to Colubrinae. Because tropical African snakes are generally understudied, the relationships within Grayia are poorly known. Due to high degrees of intra- and interspecies variation, identification is often difficult and previous studies involving Grayia included misidentified specimens in other genera. The goal of this study is to create a phylogenetic tree that can be used to understand the relationships and taxonomy of Grayia via an integrative taxonomic …
A Revision Of The New World Ants Of The Genus Platythyrea Roger 1863 (Hymenoptera: Formicidae), Mayra Janett Leyva
A Revision Of The New World Ants Of The Genus Platythyrea Roger 1863 (Hymenoptera: Formicidae), Mayra Janett Leyva
Open Access Theses & Dissertations
The genus Platythyrea consists of arboreal ants that are rarely collected. The genus was last partially revised in 1975 by Brown. Since that revision two additional species have been described. The New World genus Platythyrea now includes nine species: P. angusta Forel, P. exigua Kempf, P. lenca De Andrade, P. pilosula (Smith), P. prizo Kugler, P. punctata (Smith), P. sinuata (Roger), P. strenua Wheeler and P. zodion Brown. A new key, illustrations, diagnoses and distributions of the ants are provided.