Andrea Contina

Andrea Contina
University of Texas at Austin | UT

PhD

About

54
Publications
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315
Citations

Publications

Publications (54)
Preprint
Background Migratory connectivity describes the extent to which portions of a migratory population that are spatially associated during one stage of the annual cycle remain associated during other stages of the annual cycle. The strength of migratory connectivity may vary spatially across a species’ range and temporally as individuals move through...
Article
Full-text available
The recognition of adequate sampling designs is an interdisciplinary topic that has gained popularity over the last decades. In ecology, many research questions involve sampling across extensive and complex environmental gradients. This is the case for stable isotope analyses, which are widely used to characterize large‐scale movement patterns and...
Article
We implemented stable isotope analysis to evaluate the molt behavior of the Colima warbler (Leiothlypis crissalis), an understudied migratory songbird occurring in Mexico and recently discovered breeding in the southern part of Texas, USA. We built a geostatistical model showing variation in deuterium precipitation values (d2Hp) across a latitudina...
Article
Migratory divides are contact zones between breeding populations with divergent migratory strategies during the non‐breeding season. These locations provide an opportunity to evaluate the role of seasonal migration in the maintenance of reproductive isolation, particularly the relationship between population structure and features associated with d...
Article
Plumage ornamentation in birds serves critical inter- and intra-sexual signaling functions. While carotenoid-based plumage colouration is often viewed as a classic condition-dependent sexually selected trait, plumage colouration can be influenced by a wide array of both intrinsic and extrinsic factors. Understanding the mechanisms underlying variat...
Preprint
Full-text available
Habitat availability determines the distribution of migratory waterfowl along their flyway, which further influences the transmission and spatial spread of avian influenza viruses (AIVs). The extensive habitat loss in the East Asian-Australasian Flyway (EAAF) may have potentially altered the virus transmission and spread, but those consequences are...
Preprint
Agent-based modeling (ABM) shows promise for animal movement studies. However, a robust, open-source, and spatially explicit ABM coding platform is currently lacking. We present abmR, an R package for conducting continental-scale ABM simulations across animal taxa. The package features two movement functions, each of which relies on the Ornstein-Uh...
Preprint
Full-text available
Whether and how migratory organisms exhibit inter-individual behavioral and/or physiological variation across movement strategies remains an open question. The Dark-eyed Junco (Junco hyemalis) is a migratory songbird known for its intra-species variation displayed in relation to morphology, song repertoires, and migration. Thus, studies focusing on...
Preprint
Full-text available
Plumage ornamentation in birds serves critical inter- and intra-sexual signaling functions. While carotenoid-based plumage colouration is often viewed as a classic condition-dependent sexually selected trait, plumage colouration can be influenced by a wide array of both intrinsic and extrinsic factors. Understanding the mechanisms underlying variat...
Preprint
The recognition of adequate sampling designs is an interdisciplinary topic that has gained popularity over the last decades. In ecology, many research questions involve sampling across extensive and complex environmental gradients. This is the case of stable isotope analyses, which are widely used to characterize large-scale movement patterns and d...
Article
Full-text available
Stable hydrogen and oxygen isotopic compositions (δ2H and δ18O, respectively) of animal tissues have been used to infer geographic origin or mobility based on the premise that the isotopic composition of tissue is systematically related to that of local water sources. Isotopic data for known‐origin samples are required to quantify these tissue‐envi...
Article
Full-text available
There are a variety of perspectives on wildlife management and conservation, necessitating interdisciplinary research to develop better management strategies. We answered the call to action provided by Teel et al. (2018) to integrate social sciences into conservation and explored an important but understudied issue: views on the international pet-t...
Article
In this letter we present comments on the article "A global-scale ecological niche model to predict SARS-CoV-2 coronavirus" by Coro published in 2020.
Method
Full-text available
Using a 2:1 chloroform methanol solution and Versatm detergent diluted with deionized water we cleaned feather samples of oil/debris for stable isotope analysis of carbon (δ13C), nitrogen (δ15N), and hydrogen (δ2H). Prepared samples were then measured, cut, and packaged in tin or silver capsules for analysis of carbon(δ13C) and nitrogen(δ15N) or hy...
Article
Full-text available
Species distribution models can be made more accurate by use of new “Spatiotemporal Exploratory Models” (STEMs), a type of spatially explicit ensemble model (SEEM) developed at the continental scale that averages regional models pixel by pixel. Although SEEMs can generate more accurate predictions of species distributions, they are computationally...
Article
Full-text available
The Painted Bunting Passerina ciris is a Neotropical songbird which breeds primarily in the United States during the summer and migrates to Mexico, Central America, southern Florida, and the Caribbean over the winter. Male Painted Buntings are brightly coloured, which makes them highly sought after as pets, particularly in Mexico, Central America a...
Article
Full-text available
Complex behavioral traits, such as those making up a migratory phenotype, are regulated by multiple environmental factors and multiple genes. We investigated possible relationships between microsatellite variation at two candidate genes implicated in the control of migratory behavior, Clock and Adcyap1, and several aspects of migratory life-history...
Data
Genetic distances. The genetic distances (δμ2) computed for microsatellites within Clock and Adcyap1 and visualized on a Neighbor-joining tree. Results based on Clock genetic distances indicated Louisiana (LA) and Oklahoma (OK) as sister populations. Results based on Adcyap1 genetic distances indicated Louisiana and North Carolina (NC) as sister po...
Data
Migratory phenotype of Painted Buntings. The top panel shows individual departure dates from Oklahoma at the end of the summer. The column “Migration” shows that the duration of fall migration, starting at the breeding ground in Oklahoma (USA) and ending at the molting ground in Sinaloa (Mexico), varies extensively between individuals. The details...
Data
Observed (Ho) and expected (He) heterozygosity at Clock and Adcyap1. Significant p values (p < 0.05) indicating deviation from Hardy-Weinberg equilibrium (HWE) are marked with asterisks. (XLSX)
Data
Linkage Disequilibrium (LD) results for microsatellite at Clock (locus 1) and Adcyap1 (locus 2). There is no indication that these two loci are in LD (p > 0.05). (XLSX)
Data
TESS3 Q matrix output for Clock, Adcyap1, and neutral loci. The graphs show the cluster assignment probabilities for Painted Buntings sampled in three populations (OK = Oklahoma; LA = Louisiana; NC = North Carolina) for K = 2. The probability (Q) of each population to be assigned to a cluster is shown on the vertical axes in panel a, b, and c. Each...
Data
Microsatellite allele size variation at Clock and Adcyap1 across Painted Bunting populations. Values are reported for each allele (allele-A and allele-B) and for the average of the two alleles. Allele-A indicates short alleles and allele-B indicates long alleles. (XLSX)
Article
Full-text available
Background: Autumn latitudinal migrations generally exhibit one of two different temporal migration patterns: type 1 where southern populations migrate south before northern populations, or type 2 where northern populations overtake southern populations en route. The ruby-throated hummingbird (Archilochus colubris) is a species with an expansive br...
Article
We developed nuclear single nucleotide polymorphism (SNP) markers for the Painted Bunting (Passerina ciris) using next-generation sequencing genotyping on the Illumina HiSeq4000 platform. Following the best-RAD approach, we sequenced 96 individuals from five breeding populations occurring in the United States. We assessed the discerning power of 10...
Chapter
All aggregate biological phenomena in the aerosphere are due to the behaviors of unique individuals acting according to their own rules of behavior and perceived external stimuli. An appealing characteristic of aeroecology is that we can observe both these aggregate behaviors of large groups (using tools such as radar and observational networks) as...
Article
To search for genes associated with migratory phenotypes in songbirds, we selected candidate genes by annotations from the Mouse Genome Informatics database and assembled an extensive candidate gene library. Then, we implemented a next generation sequencing approach to obtain DNA sequences from the Painted Bunting genome. We focused on those sequen...
Article
Full-text available
Migratory animals often go to extraordinary lengths to follow broad-scale changes in the spatial distributions of food resources over time. An example is the molt-migration system of songbirds in the central and western United States, wherein birds interrupt migratory movements to molt their feathers in the ephemerally productive North American mon...
Article
Full-text available
Light-level geolocation data loggers, or geologgers, have recently been miniaturized to the extent that they can be deployed on small songbirds, allowing us to determine many previously unknown migration routes, breeding locations, and wintering sites. Use of geologgers on small birds has great potential to help address major research and conservat...
Article
Full-text available
Painted Buntings (Passerina ciris) breed in a variety of habitat s across the southern United States; however, a 500-km gap divides the species into eastern and western populations with dramatically different molting schedules. By contrast, the closely related Indigo Bunting (P. cyanea) is syntopic with Painted Buntings, but its range includes the...
Article
Full-text available
Painted Buntings (Passerina ciris) that breed in Oklahoma and molt in Sinaloa, Mexico, demonstrate a clear bimodal pattern of stable isotope ratios in their flight feathers. Some birds had a C3 carbon signature in primary 1 (P1, the first feather replaced during wing molt) and a C4 carbon signature in primary 9 (P9, the last primary to molt), where...
Article
Full-text available
Stable isotope ratios of hydrogen (delta D) and carbon (delta(13)C) in feathers collected from Painted Buntings (Passerina ciris (L., 1758)) breeding in the midwestern United States revealed a surprising degree of variation in delta D, as well as a clear bimodal signal in delta(13)C in the innermost primary feather. Because this population does not...

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Projects (3)
Project
Over two-thirds of all landbirds and over half of the migratory species that breed in temperate North America move long distances to nonbreeding areas in Mexico, Central and South America and Caribbean islands. Movement across the Gulf of Mexico (GOM) is a conspicuous, energetically demanding feature of this bird migration system. Habitats along the northern coast of the GOM provide the last possible stopover before fall migrants make a nonstop flight, and the first possible landfall for birds returning north in spring. Migrant-habitat relations are critical when birds must cross this barrier, yet the availability of suitable habitat for birds is often at odds with rapid growth and development in coastal landscapes. Long term data reveal declines among many migratory bird populations, and events associated with migration, including the quality and amount of stopover habitat, are implicated in this decline.Therefore, we are working to better understand migration and stopover ecology of songbirds along the northern GOM.