Effect of Social Stress and Inherited Plasma Corticosterone Levels in Chickens on Populations of the Northern Fowl Mite, Ornithonyssus sylviarum

1975 ◽  
Vol 61 (6) ◽  
pp. 1096 ◽  
Author(s):  
R. D. Hall ◽  
W. B. Gross
Keyword(s):  
Social Stress ◽  
Plasma Corticosterone ◽  
Ornithonyssus Sylviarum ◽  
Northern Fowl Mite

scholarly journals Acaricide Resistance in Northern Fowl Mite (Ornithonyssus sylviarum) Populations on Caged Layer Operations in Southern California

2004 ◽  
Vol 83 (3) ◽  
pp. 365-374 ◽  
Author(s):  
B.A. Mullens ◽  
R.K. Velten ◽  
N.C. Hinkle ◽  
D.R. Kuney ◽  
C.E. Szijj
Keyword(s):  
Southern California ◽  
Acaricide Resistance ◽  
Ornithonyssus Sylviarum ◽  
Northern Fowl Mite

Temporal patterns of limbic monoamine and plasma corticosterone response during social stress

Neuroscience ◽  
2003 ◽  
Vol 116 (2) ◽  
pp. 553-563 ◽  
Author(s):  
C.H Summers ◽  
T.R Summers ◽  
M.C Moore ◽  
W.J Korzan ◽  
S.K Woodley ◽  
...  
Keyword(s):  
Social Stress ◽  
Temporal Patterns ◽  
Plasma Corticosterone ◽  
Corticosterone Response

scholarly journals Molecular characterization and genetic diversity of Ornithonyssus sylviarum in chickens (Gallus gallus) from Hainan Island, China

2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Biswajit Bhowmick ◽  
Jianguo Zhao ◽  
Øivind Øines ◽  
Tianlin Bi ◽  
Chenghong Liao ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Genetic Diversity ◽  
Molecular Analysis ◽  
Dna Sequences ◽  
Demographic History ◽  
Asian Countries ◽  
Ornithonyssus Sylviarum ◽  
Private Haplotype ◽  
Northern Fowl Mite ◽  
Poultry Farms

Abstract Background The northern fowl mite (NFM), Ornithonyssus sylviarum, is an obligatory hematophagous ectoparasite of birds and one of the most important pests in the poultry industry on several continents. Although NFM poses a serious problem, it remains a neglected pest of poultry in China and other Asian countries. Therefore, a molecular analysis was conducted to provide baseline information on the occurrence, genetic diversity and emergence of NFM in poultry farms from China. Methods This study focused on morphological description and identification of adults based on electron microscopy, molecular sequencing of the mitochondrial cox1 gene and phylogenetic analysis. We have also used the DNA sequences of the cox1 gene to study the genetic diversity, population structure and demographic history. The neutrality tests were used to analyze signatures of historical demographic events. Results The mites collected were identified as the northern fowl mite Ornithonyssus sylviarum based on external morphological characterization using electron microscopy. Molecular analysis using a 756-bp long partial fragment of the cox1 gene revealed 99–100% sequence identity with NFM and phylogenetic inferences showed a bootstrap value of 99% indicating a well-supported monophyletic relationship. Molecular diversity indices showed high levels of haplotype diversity dominated by private haplotypes, but low nucleotide divergence between haplotypes. The Tajima’s D test and Fu’s Fs test showed negative value, indicating deviations from neutrality and both suggested recent population expansion of mite populations supported by a star-like topology of the isolates in the network analysis. Our genetic data are consistent with a single introduction of NFM infestations and the spread of NFM infestation in Hainan poultry farms and a private haplotype dominance, which suggest that infestations are recycled within the farms and transmission routes are limited between farms. Conclusions To our knowledge, this is the first time a molecular report of NFM in chicken from China including other Asian countries using DNA barcoding. The findings have potential implications with respect to understanding the transmission patterns, emergence and populations trends of parasitic infestations of poultry farms that will help for setting the parameters for integrated pest management (IPM) tactics against mite infestations.

scholarly journals Neuroendocrine profiling in inherited stress-induced arterial hypertension rat strain with stress-sensitive arterial hypertension

2007 ◽  
Vol 195 (3) ◽  
pp. 439-450 ◽  
Author(s):  
A L Markel ◽  
O E Redina ◽  
M A Gilinsky ◽  
G M Dymshits ◽  
E V Kalashnikova ◽  
...  
Keyword(s):  
Arterial Hypertension ◽  
Social Stress ◽  
Restraint Stress ◽  
Plasma Corticosterone ◽  
Isiah Rats ◽  
Handling Stress ◽  
Arterial Blood ◽  
Expression Of Genes ◽  
Genes Encoding ◽  
Rat Strain

The functions of the hypothalamic adrenal cortical and sympathetic adrenal medullary systems were studied in rats with inherited stress-induced arterial hypertension (ISIAH strain). A characteristic feature of the ISIAH strain is an increase in arterial blood pressure measured both under basal conditions and after restraint stress in particular. In the control ISIAH rats, the basal plasma ACTH concentration was slightly lower than that in the normotensive Wistar albino Glaxo (WAG) rats, and no differences were found in plasma corticosterone. However, the 0.5-h restraint stress produced higher activation of the adrenal cortex in the ISIAH rats. Gluco- and mineralocorticoid responses to the blood volume reduction stresses and ACTH and corticosterone responses to social stress were stronger in the ISIAH than in the control WAG rats. An increase in epinephrine content in adrenals in the basal state and enhanced response of the sympathetic adrenal medullary system to handling stress were observed in the ISIAH rats. Restraint stress produced significantly higher expression of genes encoding corticotropin-releasing hormone-mRNA in hypothalamus and proopiomelanocortin-mRNA in pituitary in the ISIAH than in the WAG rats. Restraint stress produced a decrease in glucocorticoid receptor (GR) gene expression (GR-mRNA) in hippocampus in the ISIAH, but not in the WAG rats. A persistent increase in tyrosine hydroxylase-mRNA in adrenals of the ISIAH rats was found. It is concluded that the ISIAH rat strain is an appropriate model of stress-sensitive hypertension with the predominant involvement of the hypothalamic adrenal cortical and sympathetic adrenal medullary systems in its pathogenesis.

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