Behavioral interactions and glucocorticoid production of Somali wild ass (Equus africanus somaliensis) mothers and foals

2021 ◽  
pp. 105337
Author(s):  
Corinne P. Kozlowski ◽  
Eli Baskir ◽  
Helen L. Clawitter ◽  
Ashley D. Franklin ◽  
Tim Thier ◽  
...  
Keyword(s):  
Behavioral Interactions ◽  
Wild Ass ◽  
Glucocorticoid Production

The advertisement call of Allobates niputidea (Anura: Aromobatidae)

Zootaxa ◽  
2019 ◽  
Vol 4656 (1) ◽  
pp. 196-200
Author(s):  
ANA MARÍA OSPINA-L. ◽  
DANIELA MURILLO-BEDOYA ◽  
DANIELA GARCÍA-COBOS ◽  
ZUANIA COLÓN-PIÑEIRO ◽  
ANDRÉS ACOSTA-GALVIS
Keyword(s):  
Acoustic Signal ◽  
Phylogenetic Relationships ◽  
Advertisement Call ◽  
Evolutionary Processes ◽  
Behavioral Interactions ◽  
Diagnostic Characters ◽  
Anuran Species

In anurans, acoustic signal traits are useful for understanding patterns of evolutionary processes, behavioral interactions, and providing diagnostic characters for inferring phylogenetic relationships and delimiting species (Cocroft & Ryan 1995). The advertisement call, which is the vocalization emitted to attract females or segregate conspecific males, is the most conspicuous and studied acoustic signal (Toledo et. al. 2014). However, it remains unknown for many anuran species (Köhler et al. 2017; Guerra et al. 2018). 

scholarly journals Corrigendum to: Male–male behavioral interactions drive social-dominance mediated differences in ejaculate traits

2021 ◽  
Author(s):  
Charel Reuland ◽  
Brett M Culbert ◽  
Erika Fernlund Isaksson ◽  
Ariel F Kahrl ◽  
Alessandro Devigili ◽  
...  
Keyword(s):  
Social Dominance ◽  
Behavioral Interactions

Gonadotrophin-secretion in adrenocortical insufficiency: impact of glucocorticoid substitution

1982 ◽  
Vol 101 (4) ◽  
pp. 580-585 ◽  
Author(s):  
H. Vierhapper ◽  
W. Waldhäusl ◽  
P. Nowotny
Keyword(s):  
Adrenal Insufficiency ◽  
Secretory Response ◽  
Bilateral Adrenalectomy ◽  
Substitution Therapy ◽  
Adrenocortical Insufficiency ◽  
Primary Adrenal Insufficiency ◽  
Gonadotrophin Secretion ◽  
Glucocorticoid Production

Abstract. In patients with deficient endogenous glucocorticoid production due to primary adrenal insufficiency (n = 4) or bilateral adrenalectomy (n = 2) a rise in LRH-stimulated concentrations of LH was seen following withdrawal of substitution therapy for 84 h. Consecutive re-administration of glucocorticoids (dexamethasone 2.0 mg/day for 3 days) resulted in increased basal concentrations of LH and FSH and a diminished secretory response of LH upon iv LRH (100 μg). Five patients substituted with glucocorticoids because of adrenocortical insufficiency presented upon the administration of exogenous ACTH1-24 with unchanged basal and LRH-stimulated concentrations of LH and FSH as compared to a placebo experiment. These data suggest that the withdrawal and subsequent re-administration of glucocorticoid substitution alters basal and stimulated concentrations of gonadotrophins in patients with adrenocortical insufficiency, thus providing evidence for the importance of adequate glucocorticoid supply in the regulation of gonadotrophin secretion.

Pleistocene Mammals from Gold Run Creek, Yukon Territory

1973 ◽  
Vol 10 (5) ◽  
pp. 697-759 ◽  
Author(s):  
C. R. Harington ◽  
F. V. Clulow
Keyword(s):  
Yukon Territory ◽  
Radiocarbon Date ◽  
Common Elements ◽  
Radiocarbon Dates ◽  
Equus Asinus ◽  
Wild Ass ◽  
Pleistocene Mammals ◽  
First Time

Remains of thirteen species of mammals are reported from Pleistocene deposits at Gold Run Creek near Dawson, Yukon Territory. Eight of the thirteen species are extinct and two are no longer living in the Yukon. The most common elements of the fauna are Equus (Asinus) lambei (Yukon wild ass), and Bison crassicornis (large-horned bison). Taxidea (badger) and Bison alaskensis (Alaskan bison) are reported for the first time from the Yukon Pleistocene. A kiang-like horse is also reported from deposits at Gold Run Creek.These mammals may have inhabited a cool grassland or open parkland during late Wisconsin time. Bison crassicornis and mammoth bone from deposits at Gold Run Creek have yielded radiocarbon dates of 22 200 ± 1400 yr B.P. and 32 250 ± 1750 yr B.P. respectively. Bison alaskensis is evidently older than the remainder of the fauna as bone from the specimen yielded a radiocarbon date of over 39 900 yr B.P.

scholarly journals Glucocorticoid production in the chicken bursa and thymus

2001 ◽  
Vol 13 (6) ◽  
pp. 769-776 ◽  
Author(s):  
Oskar Lechner ◽  
Hermann Dietrich ◽  
G. Jan Wiegers ◽  
Melanie Vacchio ◽  
Georg Wick
Keyword(s):  
Glucocorticoid Production

Affiliative and Aggressive Behavior in a Group of Female Somali Wild Ass (Equus africanus somalicus)

Zoo Biology ◽  
2011 ◽  
Vol 31 (1) ◽  
pp. 87-97 ◽  
Author(s):  
Cheryl S. Asa ◽  
Fiona Marshall ◽  
Martha Fischer
Keyword(s):  
Aggressive Behavior ◽  
Wild Ass
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