Alexander Ochoa

Alexander Ochoa
University of Central Florida | UCF · Department of Biology

Doctor of Philosophy

About

13
Publications
5,585
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94
Citations
Introduction
Additional affiliations
August 2020 - September 2020
University of Central Florida
Position
  • PostDoc Position
June 2017 - August 2020
The Ohio State University
Position
  • PostDoc Position
Education
January 2010 - May 2017
The University of Arizona
Field of study
  • Natural Resources (Wildlife Conservation and Management)
September 2003 - November 2008

Publications

Publications (13)
Article
Understanding the molecular basis of adaptations in coevolving species requires identifying the genes that underlie reciprocally selected phenotypes, such as those involved in venom in snakes and resistance to the venom in their prey. In this regard, California ground squirrels (CGS; Otospermophilus beecheyi) are eaten by northern Pacific rattlesna...
Article
Full-text available
ABSTRACT—Retaliatory killing of large carnivores due to livestock predation is one of the major threats for the conservation of many declining populations of predators. According to empirical observations, there is a higher incidence of livestock predation when native prey abundance is low. In this study, we applied a treatment consisting of augmen...
Article
Theory predicts that threatened species living in small populations will experience high levels of inbreeding that will increase their genetic load, but recent work suggests that the impact of load may be minimized by purging resulting from long‐term population bottlenecks. Empirical studies that examine this idea using genome‐wide estimates of inb...
Preprint
Theory predicts that threatened species living in small populations will experience high levels of inbreeding that will increase their negative genetic load but recent work suggests that the impact of load may be minimized by purging resulting from long term population bottlenecks. Empirical studies that examine this idea using genome-wide estimate...
Article
Full-text available
An important goal of conservation genetics is to determine if the viability of small populations is reduced by a loss of adaptive variation due to genetic drift. Here, we assessed the impact of drift and selection on direct measures of adaptive variation (toxin loci encoding venom proteins) in the Eastern Massasauga rattlesnake (Sistrurus catenatus...
Article
Understanding how interspecific interactions mould the molecular basis of adaptations in coevolving species is a long‐sought goal of evolutionary biology. Venom in predators and venom resistance proteins in prey are coevolving molecular phenotypes, and while venoms are highly complex mixtures it is unclear if prey respond with equally complex resis...
Article
Full-text available
In the mid-1990s, the population size of Florida panthers became so small that many individuals manifested traits associated with inbreeding depression (e.g., heart defects, cryptorchidism, high pathogen-parasite load). To mitigate these effects, pumas from Texas were introduced into South Florida to augment genetic variation in Florida panthers. I...
Article
Full-text available
Roads can substantially impact the population connectivity of a wide range of terrestrial vertebrates, often resulting in loss of genetic diversity and an increase of spatial genetic structure. We studied the Western Diamond-backed Rattlesnake (Crotalus atrox), a large and abundant venomous predator, to test the hypothesis that a large and relative...
Article
Florida panthers are endangered pumas that currently persist in reduced patches of habitat in South Florida, USA. We performed mitogenome reference-based assemblies for most parental lines of the admixed Florida panthers that resulted from the introduction of female Texas pumas into South Florida in 1995. With the addition of 2 puma mitogenomes, we...
Article
Full-text available
The Arabian oryx (Oryx leucoryx) historically ranged across the Arabian Peninsula and neighboring countries until its extirpation in 1972. In 1963–1964 a captive breeding program for this species was started at the Phoenix Zoo (PHX); it ultimately consisted of 11 animals that became known as the ‘World Herd’. In 1978–1979 a wild population was esta...
Article
Full-text available
We documented puma (Puma concolor) and jaguar (Panthera onca) prey consumption in northeastern Sonora, Mexico, by investigating global positioning system cluster sites (n = 220), and conducting molecular analyses of scat (n = 116) collected between 2011 and 2013. We used camera trap data (n = 8,976 camera days) to estimate relative abundances of pu...
Conference Paper
Recent advances in genetic techniques, such as single nucleotide polymorphisms (SNPs), are not often applied to non-model species, including wild felids. Similarly, samples with low quantity of DNA, have not been widely utilized when working with these SNPs. New SNP markers developed for Puma concolor using transcriptome sequencing have shown to be...
Article
Full-text available
The Perote ground squirrel (Xerospermophilus perotensis) is endemic to Mexico and is currently at risk of extinction. Its original range comprised 5,250 km2 in an area known as the Oriental Basin, between the states of Puebla and Veracruz. By the end of the 20th century, however, extensive agricultural practices, overgrazing, and urbanization had a...