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Life Sciences

University of Texas Rio Grande Valley

School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations

Series

2013

Articles 1 - 3 of 3

Full-Text Articles in Physical Sciences and Mathematics

Timing Of Favorable Conditions, Competition And Fertility Interact To Govern Recruitment Of Invasive Chinese Tallow Tree In Stressful Environments, Christopher A. Gabler, Evan Siemann Aug 2013

Timing Of Favorable Conditions, Competition And Fertility Interact To Govern Recruitment Of Invasive Chinese Tallow Tree In Stressful Environments, Christopher A. Gabler, Evan Siemann

School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations

The rate of new exotic recruitment following removal of adult invaders (reinvasion pressure) influences restoration outcomes and costs but is highly variable and poorly understood. We hypothesize that broad variation in average reinvasion pressure of Triadica sebifera (Chinese tallow tree, a major invader) arises from differences among habitats in spatiotemporal availability of realized recruitment windows. These windows are periods of variable duration long enough to permit establishment given local environmental conditions. We tested this hypothesis via a greenhouse mesocosm experiment that quantified how the duration of favorable moisture conditions prior to flood or drought stress (window duration), competition and nutrient …


A Lover And A Fighter: The Genome Sequence Of An Entomopathogenic Nematode Heterorhabditis Bacteriophora, Xiaodong Bai, Byron J. Adams, Todd A. Ciche, Sandra Clifton, Randy Gaugler, Kwi-Suk Kim, Parwinder Grewal Jul 2013

A Lover And A Fighter: The Genome Sequence Of An Entomopathogenic Nematode Heterorhabditis Bacteriophora, Xiaodong Bai, Byron J. Adams, Todd A. Ciche, Sandra Clifton, Randy Gaugler, Kwi-Suk Kim, Parwinder Grewal

School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations

Heterorhabditis bacteriophora are entomopathogenic nematodes that have evolved a mutualism with Photorhabdus luminescens bacteria to function as highly virulent insect pathogens. The nematode provides a safe harbor for intestinal symbionts in soil and delivers the symbiotic bacteria into the insect blood. The symbiont provides virulence and toxins, metabolites essential for nematode reproduction, and antibiotic preservation of the insect cadaver. Approximately half of the 21,250 putative protein coding genes identified in the 77 Mbp high quality draft H. bacteriophora genome sequence were novel proteins of unknown function lacking homologs in Caenorhabditis elegans or any other sequenced organisms. Similarly, 317 of the …


Uso De Hábitat Y Perspectivas De Lontra Longicaudis En Un Área Protegida De Tamaulipas, México, Piedad Esther Mayagoitia-González, Alejandro Fierro-Cabo, Raul Valdez, Mark Andersen, David Cowley, Robert Steiner Jul 2013

Uso De Hábitat Y Perspectivas De Lontra Longicaudis En Un Área Protegida De Tamaulipas, México, Piedad Esther Mayagoitia-González, Alejandro Fierro-Cabo, Raul Valdez, Mark Andersen, David Cowley, Robert Steiner

School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations

El hábitat de la nutria neotropical (Lontra longicaudis) en el Área Natural Protegida (ANP) La Vega Escondida, ubicada al sur de Tamaulipas, se encuentra rodeado de un paisaje urbano en expansión. Los humedales en esta región están sometidos a una intensa presión debido a diversas actividades antropogénicas tales como la agricultura, ganadería y pesca comercial, así como construcciones y rellenos en orillas de laguna y río. El presente estudio tuvo como objetivos principales la evaluación y uso de hábitat de la nutria dentro del ANP La Vega Escondida, así como determinar la actitud de la población humana hacia esta especie. …