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Articles 1 - 5 of 5
Full-Text Articles in Animal Sciences
Cooperative Feeding In Common Dolphins As Suggested By Ontogenetic Patterns In Δ15N Bulk And Amino Acids, Rocio I. Ruiz-Cooley, Tim Gerrodette, Susan Chivers, Kerri Danil
Cooperative Feeding In Common Dolphins As Suggested By Ontogenetic Patterns In Δ15N Bulk And Amino Acids, Rocio I. Ruiz-Cooley, Tim Gerrodette, Susan Chivers, Kerri Danil
United States Department of Commerce: Staff Publications
1. Understanding the effect of stage-specific traits on species feeding habits can reveal how natural selection shapes life strategies. Amino acid (AA) nitrogen stable isotopes (δ15N) provide multiple proxies of habitat baseline values and diet that can improve our understanding of species feeding strategies relative to their animal metabolism. We evaluated the effect of body length as a proxy for life stage and sex on the feeding habits of the common dolphin Delphinus delphis delphis using δ13C and δ15N in bulk tissue and AAs δ15N from skin samples collected for almost two …
Incorporating Animal Movement Into Distance Sampling, R. Glennie, S. T. Buckland, R. Langrock, Tim Gerrodette, Susan Chivers, M. D. Scott
Incorporating Animal Movement Into Distance Sampling, R. Glennie, S. T. Buckland, R. Langrock, Tim Gerrodette, Susan Chivers, M. D. Scott
United States Department of Commerce: Staff Publications
Distance sampling is a popular statistical method to estimate the density of wild animal populations. Conventional distance sampling represents animals as fixed points in space that are detected with an unknown probability that depends on the distance between the observer and the animal. Animal movement can cause substantial bias in density estimation. Methods to correct for responsive animal movement exist, but none account for nonresponsive movement independent of the observer. Here, an explicit animal movement model is incorporated into distance sampling, combining distance sampling survey data with animal telemetry data. Detection probability depends on the entire unobserved path the animal …
Establishing Hematology And Serum Chemistry Reference Intervals For Wild Hawaiian Monk Seals (Neomonachus Schauinslandi), Angela C. Kaufman, Stacie J. Robinson, Dori L. Borjesson, Michelle Barbieri, Charles L. Littnan
Establishing Hematology And Serum Chemistry Reference Intervals For Wild Hawaiian Monk Seals (Neomonachus Schauinslandi), Angela C. Kaufman, Stacie J. Robinson, Dori L. Borjesson, Michelle Barbieri, Charles L. Littnan
United States Department of Commerce: Staff Publications
Hematology and serum chemistry reference intervals have been previously established for the endangered Hawaiian monk seal (Neomonachus schauinslandi) as an imperative measure for health assessments. Monitoring the health of the wild population depends upon reference intervals that are context specific; hence we developed reference intervals from fresh samples, as opposed to frozen, from wild monk seals. This study builds on the number of parameters from previous efforts by using samples collected between 2004 and 2015 from wild monk seals. Blood samples were analyzed by a single veterinary diagnostic laboratory within 24 hr of collection from apparently healthy, wild …
Differential Expression Of Immune Response Genes In Steller Sea Lions (Eumetopias Jubatus): An Indicator Of Ecosystem Health?, Lizabeth Bowen, Brian Aldridge, Kimberlee Beckmen, Tom Gelatt, Lorrie Rea, Kathy Burek, Ken Pitcher, Jeffrey L. Stott
Differential Expression Of Immune Response Genes In Steller Sea Lions (Eumetopias Jubatus): An Indicator Of Ecosystem Health?, Lizabeth Bowen, Brian Aldridge, Kimberlee Beckmen, Tom Gelatt, Lorrie Rea, Kathy Burek, Ken Pitcher, Jeffrey L. Stott
United States Department of Commerce: Staff Publications
Characterization of the polygenic and polymorphic features of the Steller sea lion major histocompatibility complex (MHC) provides an ideal window for evaluating immunologic vigor of the population and identifying emergence of new genotypes that reflect ecosystem pressures. MHC genotyping can be used to measure the potential immunologic vigor of a population. However, since ecosystem-induced changes to MHC genotype can be slow to emerge, measurement of differential expression of these genes can potentially provide real-time evidence of immunologic perturbations. MHC DRB genes were cloned and sequenced using peripheral blood mononuclear leukocytes derived from 10 Steller sea lions from southeast Alaska, Prince …
Survey And Reconnaissance Of Sea Turtles In The Northern Gulf Of Mexico, Larry Ogren
Survey And Reconnaissance Of Sea Turtles In The Northern Gulf Of Mexico, Larry Ogren
United States Department of Commerce: Staff Publications
This is a report on the results of an aerial survey of nesting beaches conducted during the period from May 16, 1977 to August 11, 1977. The area covered included the barrier beaches and offshore islands from the Florida-Alabama state line to the Rio Grande, Texas. Additional historical information is provided in order to compare current nesting activity with previous years as well as anecdotal observations on the occurrence of sea turtles in this region.