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Frogs Hiding In Plain Sight: Phylogenetic Systematics Of Myanmar’S Occidozyga Species Complex, And The Identification Of A Novel Species, Allison Bogisich
Frogs Hiding In Plain Sight: Phylogenetic Systematics Of Myanmar’S Occidozyga Species Complex, And The Identification Of A Novel Species, Allison Bogisich
Master's Theses
Different species can be difficult to distinguish from one another when they are morphologically similar. Such cryptic species are the reason many anuran species go undetected. For this study, the taxonomic identity of the Occidozyga complex across Myanmar was investigated. An integrated approach was used combining molecular, morphological and phylogeographic data to better assess its taxonomy. Results indicate the presence of three new candidate species within Occidozyga, and three evolutionarily significant unit (ESU) lineages. Two mitochondrial gene fragments (16S, COI) and one nuclear gene fragment (Rhodopsin) were examined from DNA isolated from forty-seven preserved specimens from the California Academy …
Avocado Root Rot: Steep, Rocky Terrain And Biodiversity Help Protect Small Farmers In Post-Conflict Colombia, Morgan Frankel
Avocado Root Rot: Steep, Rocky Terrain And Biodiversity Help Protect Small Farmers In Post-Conflict Colombia, Morgan Frankel
Master's Theses
In recent years, small avocado producers in coastal Colombia returned to their farms after decades of war to discover they must battle the pathogen Phytophthora cinnamomi devastating their trees. While this disease is well-described in the U.S., Australia, and Europe, no previous research has examined environmental correlates of P. cinnamomi in avocado in the diverse tropical agroecosystem of the Colombian Montes de Maria. I used agroecosystem inventory, in-field diagnostics, and disease observations to describe avocado agroecosystem diversity and identify relationships among P. cinnamomi presence, root rot disease, slope, pH, soil compaction, elevation, and distance to the household in remote smallholder …