Seventy-four red-bellied woodpeckers (Melanerpes carolinus) from the Apalachicola National Forest (30 degrees 10'N, 84 degrees 40'W) in northwest Florida were examined for helminths. The most prevalent parasites were the nematode Aproctella stoddardi (11%) and the acanthocephalan Mediorhynchus centurorum (11%). New host records include Pseudaprocta samueli, A. stoddardi, Tridentocapillaria tridens, Diplotriaena americana, Dispharynx nasuta, Procyrnea pileata, Orthoskrjabinia rostellata, and Brachylaima fuscatum. The helminth fauna was characterized by low prevalences and intensities of infection and low numbers of species per bird (1.2). The frequency of prescribed burning and habitat understory flora composition did not influence the prevalences or intensities of helminths in red-bellied woodpeckers collected from 2 similar but differently managed sites within the forest.
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http://dx.doi.org/10.1645/0022-3395(2002)088[1140:PHORBW]2.0.CO;2 | DOI Listing |
Mol Phylogenet Evol
May 2022
Museo de Zoología "Alfonso L. Herrera", Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico.
The Velazquez Woodpecker Melanerpes santacruzi is a highly polytypic species distributed from east-central Mexico to northern Nicaragua. The ample variation in body size, barring of the plumage, and the coloration of nasal tufts, neck, and belly have fueled debates about the taxonomy and evolutionary history of the species; however, the processes generating these patterns of variation and the underlying population dynamics throughout the species' distribution remain poorly understood. Here, we employed reduced representation genome sequencing (NextRAD) and Ecological Niche Modeling methods to test the distinctiveness of the Velazquez Woodpecker based on this new set of genomic data and analyze the correspondence of the genetic structure and ecological differentiation with phenotypic variation and geographic distribution.
View Article and Find Full Text PDFJ R Soc Interface
July 2014
Department of Agricultural and Biological Engineering, Mississippi State University, , Mississippi State, MS 39762, USA.
We experimentally studied beaks of the red-bellied woodpecker to elucidate the hierarchical multiscale structure-property relationships. At the macroscale, the beak comprises three structural layers: an outer rhamphotheca layer (keratin sheath), a middle foam layer and an inner bony layer. The area fraction of each layer changes along the length of the beak giving rise to a varying constitutive behaviour similar to functionally graded materials.
View Article and Find Full Text PDFConserv Biol
December 2010
Department of Biological Science, Florida State University, Tallahassee, FL 32306-4295, USA.
Competitive species interactions may contribute to population declines. Purportedly, Red-bellied Woodpeckers (Melanerpes carolinus), a common species, and Red-cockaded Woodpeckers (Picoides borealis), an endangered species, compete for roosting and nesting cavities in living pine trees. To determine whether behavioral interactions measured at the individual level manifest themselves at the population level, we conducted field experiments designed to test whether the presence of Red-bellied Woodpeckers resulted in a decrease in fitness to Red-cockaded Woodpeckers.
View Article and Find Full Text PDFAvian Dis
December 2007
Southeastern Cooperative Wildlife Disease Study, College of Veterinary Medicine, The University of Georgia, Athens, GA 30602, USA.
A red-bellied woodpecker (Melanerpes carolinus), clinically exhibiting intermittent seizures, was examined by the Southeastern Cooperative Wildlife Disease Study. Microscopically, the woodpecker had protozoal meningoencephalitis. Toxoplasma gondii was identified by immunohistochemistry and polymerase chain reaction.
View Article and Find Full Text PDFJ Comp Physiol A Neuroethol Sens Neural Behav Physiol
May 2006
Department of Psychology, University of Maryland at College Park, College Park, MD 20742-4411, USA.
Contrast sensitivity (CS) is the ability of the observer to discriminate between adjacent stimuli on the basis of their differences in relative luminosity (contrast) rather than their absolute luminances. In previous studies, using a narrow range of species, birds have been reported to have low contrast detection thresholds relative to mammals and fishes. This was an unexpected finding because birds had been traditionally reported to have excellent visual acuity and color vision.
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