Results 31 to 40 of about 432 (147)
AbstractTwenty‐four polymorphic microsatellite markers were developed for the double‐crested cormorant (Phalacrocorax auritus). The number of alleles ranged from two to 13 and observed heterozygosities ranged from 0.032 to 0.871. The use of these loci should enable researchers and biologists to learn more about the population structure and ecology of ...
Fike, Jennifer A. +2 more
openaire +3 more sources
Heat increment of feeding in double-crested cormorants (Phalacrocorax auritus) and its potential for thermal substitution [PDF]
SUMMARYDiving endotherms inhabiting polar regions face potentially high thermoregulatory costs. Unless properly insulated, these animals will lose vast amounts of heat when diving in cold water, which has to be balanced by heat production. Heat generated as a by-product of digestion (heat increment of feeding, HIF) or from exercising muscles might be ...
Manfred R, Enstipp +2 more
openaire +2 more sources
Refinement of Biomarker Pentosidine Methodology for use on Aging Birds
There is no reliable method for determining age for most species of long-lived birds. Recent success using the skin chemical pentosidine as a biomarker has shown promise as an aging tool for birds.
Crissa K. Cooey +5 more
doaj +1 more source
Swimming modes affect dive durations in diving birds
Dive duration and body mass are positively correlated across air‐breathing vertebrate species, but other factors affecting dive duration are inadequately studied. Here, we examined the effect of a previously overlooked factor, swimming mode, using phylogenetically informed statistics with data on the diving capabilities of 53 species of avian divers ...
Hiroya Matsushita, Yuuki Y. Watanabe
wiley +1 more source
Double‐crested cormorant distribution on catfish aquaculture in the Yazoo River Basin of Mississippi
Estimating the catfish aquaculture production losses that can be attributed to double‐crested cormorants (Phalacrocorax auritus) has proved problematic because knowledge of the distribution of cormorants on catfish aquaculture is lacking.
Brian S. Dorr +3 more
doaj +1 more source
Double-crested Cormorants, Phalacrocorax auritus, at inland lakes north of Lake Huron
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Alvo, Robert +2 more
openaire +2 more sources
Oyster reef restoration has become increasingly crucial due to global population declines. Intertidal oyster reefs provide essential foraging and loafing (resting) grounds to estuarine fauna. To reduce plastic pollution from traditional materials, biodegradable restoration materials have been introduced and are shown to support oyster recruitment ...
Tara L. Blanchard +3 more
wiley +1 more source
Overhead power lines can pose collision risks to birds. Risks may be mitigated through marking lines with high‐visibility devices, but the effectiveness of line marking remains unclear.
Misti K. Sporer +4 more
doaj +1 more source
Co-operative fishing by Double-crested Cormorants, Phalacrocorax auritus
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire +2 more sources
Marine Bird Bycatch in Alaska Salmon Gillnet Fisheries
ABSTRACT Incidental catch in gillnet fisheries has a substantial conservation impact on marine diving birds. We synthesized available marine bird bycatch data from Alaska salmon gillnet fisheries to estimate standardized bycatch rates, model factors influencing bycatch rates, and estimate total bycatch.
Kimberly S. Dietrich +2 more
wiley +1 more source

