scholarly journals Physiological response to capture stress in endemic Southern African catsharks (Family Scyliorhinidae)

2021 ◽  
Author(s):  
Valentina Scarponi ◽  
Enrico Gennari ◽  
William Hughes
Keyword(s):  
Physiological Response ◽  
Capture Stress

Preliminary Report of a Comparative Study of Seminiferous Tubular Epithelium from Rats Flown on Cosmos 1887 and SL3

1988 ◽  
Vol 46 ◽  
pp. 276-277
Author(s):  
Walter J. Sapp ◽  
D.E. Philpott ◽  
C.S. Williams ◽  
K. Kato ◽  
J. Stevenson ◽  
...  
Keyword(s):  
Space Flight ◽  
Physiological Response ◽  
Preliminary Report ◽  
Complete Recovery ◽  
Environmental Constraints ◽  
Tubular Epithelium ◽  
Testicular Weight ◽  
Testicular Morphology ◽  
Normal Offspring ◽  
Rats And Mice

Space flight, with its unique environmental constraints such as immobilization, decreased and increased pressures, and radiation, is known to affect testicular morphology and spermatogenesis. Selye, summarized the manifestations of physiological response to nonspecific stress and he pointed out that atrophy of the gonads always occurred. Reports of data collected from two dogs flown in space for 22 days (Cosmos 110) indicate that there was an increase of 30 to 70% atypical spermatozoa when compared to ground based controls. Seventy-five days after the flight the abnormalities had decreased to the high normal value of 30% and mating of these dogs after this period produced normal offspring, suggesting complete recovery. Effects of immobilization and increased gravity were investigated by spinning rats and mice at 2x g for 8-9 weeks. A decrease in testicular weight was noted in spun animals when compared to controls. Immobilization has been show to cause arrest of spermatogenesis in Macaca meminstrins.

Reduction of spermatogonia and testosterone in rat testes flown on space lab-3

1986 ◽  
Vol 44 ◽  
pp. 248-249
Author(s):  
Delbert E. Philpott ◽  
W. Sapp ◽  
C. Williams ◽  
T. Fast ◽  
J. Stevenson ◽  
...  
Keyword(s):  
Social Interaction ◽  
Social Status ◽  
Population Size ◽  
Physiological Response ◽  
Social Rank ◽  
Reproductive Function ◽  
Testicular Development ◽  
Organ Weights ◽  
Reproductive Maturation ◽  
Metabolic Activities

Space Lab 3 (SL-3) was flown on Shuttle Challenger providing an opportunity to measure the effect of spaceflight on rat testes. Cannon developed the idea that organisms react to unfavorable conditions with highly integrated metabolic activities. Selye summarized the manifestations of physiological response to nonspecific stress and he pointed out that atrophy of the gonads always occurred. Many papers have been published showing the effects of social interaction, crowding, peck order and confinement. Flickinger showed delayed testicular development in subordinate roosters influenced by group numbers, social rank and social status. Christian reported increasing population size in mice resulted in adrenal hypertrophy, inhibition of reproductive maturation and loss of reproductive function in adults. Sex organ weights also declined. Two male dogs were flown on Cosmos 110 for 22 days. Fedorova reported an increase of 30 to 70% atypical spermatozoa consisting of tail curling and/or the absence of a tail.

Physiological response of normal adult horses to a low-residue liquid diet

2003 ◽  
Vol 23 (7) ◽  
pp. 310-317
Author(s):  
Virginia A. Buechner-Maxwell ◽  
Francois Elvinger ◽  
Craig D. Thatcher ◽  
Micheal J. Murray ◽  
Nathanial A. White ◽  
...  
Keyword(s):  
Physiological Response ◽  
Liquid Diet ◽  
Normal Adult

Physiological Response to 1,2,4-Trichlorobenzene Stress of Different Rice Genotypes in Seedlings

2009 ◽  
Vol 35 (4) ◽  
pp. 733-740 ◽  
Author(s):  
Guo-Liang ZHANG ◽  
Wen-Jun CHEN ◽  
Li-Min QIU ◽  
Guo-Rong SUN ◽  
Qi-Gen DAI ◽  
...  
Keyword(s):  
Physiological Response ◽  
Rice Genotypes

Physiological Response of Meadowfoam to Crop Water Deficits 1

1985 ◽  
Vol 77 (3) ◽  
pp. 422-426 ◽  
Author(s):  
C. H. Pearson ◽  
G. D. Jolliff
Keyword(s):  
Physiological Response ◽  
Crop Water ◽  
Water Deficits

A PHYSIOLOGICAL RESPONSE OF THE HEAD LETTUCE (LACTUCA SATIVA VAR. CAPITATA) ON THE SALINITY

2010 ◽  
Vol II (4) ◽  
pp. 37-40
Author(s):  
Malgorzata Mikiciuk ◽  
Katarzyna Malinowska ◽  
Jacek Wrobel ◽  
Urszula Czyzewska
Keyword(s):  
Lactuca Sativa ◽  
Physiological Response
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