Stress, Corticosterone, and Heterophil to Lymphocyte Ratios in Free-Living Adélie Penguins
نویسندگان
چکیده
منابع مشابه
Stress, Corticosterone, and Heterophil to Lymphocyte Ratios in Free-living Adelie
We measured corticosterone in plasma collected from free-living AdClie Penguins (Pygoscelis adeliae) and made blood smears to count the ratio of heterophils to lymphocytes ( H a ) . Our objective was to categorize how these two measures of stress vary with potential stressors in the birds' environment. In penguins that were repeatedly sampled from three to eight times, repeated handling did not...
متن کاملAdélie penguins and environmental change.
IN THEIR REVIEW “ENVIRONMENTAL CHANGE and Antarctic seabird populations,” (Special Issue on Polar Science, 30 Aug., p. 1510), J. P. Croxall et al. describe paradoxes, many of which exist only because of a limited review of available information. Stating that the paleoecological record shows close correspondence between ice cover and the presence of Adélie penguins is correct (1), but claiming t...
متن کاملAn examination of the utility of heterophil-lymphocyte ratios in assessing stress of caged hens
To measure stress in caged hens, differential counts of their wing vein blood were used to determine heterophil/lymphocyte (H/L) ratios and total white blood cell counts (TWBC). The H/L values of 18-wk samples from conventionally caged hens (CC) were not statistically different from hens raised in aviaries (AV) when calculated by either of 2 methods (H/L 1 and H/L 2). However, there was a high ...
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Background: The present study aimed to compare the complete blood count (CBC) indices between COVID-19 patients and the control group, and assess the relationship of these indices with COVID-19 prognosis given the role of complete blood counts in the COVID-19 prognosis. Methods: COVID-19 patients (confirmed by PCR or CT-Scan) who visited Imam Hospital in Sari were selected in this case-control...
متن کاملMutation and Evolutionary Rates in Adélie Penguins from the Antarctic
Precise estimations of molecular rates are fundamental to our understanding of the processes of evolution. In principle, mutation and evolutionary rates for neutral regions of the same species are expected to be equal. However, a number of recent studies have shown that mutation rates estimated from pedigree material are much faster than evolutionary rates measured over longer time periods. To ...
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ژورنال
عنوان ژورنال: The Condor
سال: 2000
ISSN: 0010-5422,1938-5129
DOI: 10.1093/condor/102.2.392