scholarly journals Ontogeny of the Cloacal Gland in Male Japanese Quail Classified in a T-Maze

2007 ◽  
Vol 86 (9) ◽  
pp. 2013-2019 ◽  
Author(s):  
M.C. Lábaque ◽  
D.G. Satterlee ◽  
D.A. Guzman ◽  
R.H. Marin
Keyword(s):  
Japanese Quail ◽  
Cloacal Gland

Effect of corticosterone on the hypothalamic-pituitary-gonadal system of male Japanese quail exposed to either short or long photoperiods

1982 ◽  
Vol 95 (2) ◽  
pp. 165-173 ◽  
Author(s):  
Pierre Deviche ◽  
Renato Massa ◽  
Luciana Bottoni ◽  
Jean-Claude Hendrick
Keyword(s):  
Pituitary Gland ◽  
Japanese Quail ◽  
Plasma Levels ◽  
Posterior Hypothalamus ◽  
Daily Dose ◽  
Cloacal Gland

Male quail were bred under short photoperiods of 8 h light: 16 h darkness (8L : 16D; SD) for the first 4 weeks of life and were then transferred to either long photoperiods of 16L : 8D (LD) or maintained under the SD regime. Both groups of birds were treated for 2 weeks with a daily dose of either 0·25 or 1·0 mg corticosterone. The conversion of [14C]testosterone in vitro into 5α- and 5β-dihydrotestosterone (5α- and 5β-DHT), 5α- and 5β-androstane-3α,17β-diol, and androstenedione was then measured in the pituitary and cloacal glands of all birds. In the hyperstriatum and posterior hypothalamus only 5β-reduced metabolites and androstenedione were detected. Transfer to LD and injection of corticosterone affected the metabolism of testosterone only in the pituitary and cloacal glands. In the pituitary gland, exposure to LD increased the production of 5α-reduced metabolites but not of either 5β-reduced metabolites or androstenedione. In both SD and LD birds, injections of corticosterone enhanced the production of 5β-reduced steroids and decreased the production of androstenedione. In LD birds corticosterone also decreased the production of 5α-androstane-3α,17β-diol. Plasma levels of LH and FSH were higher in the LD than in the SD birds. In the SD birds treatment with corticosterone increased the level of LH after 14 days of treatment. Exposure to LD decreased the production of 5β-androstane-3α,17β-diol and androstenedione in the cloacal gland and increased the conversion of testosterone into 5α-DHT Treatment with corticosterone increased the production of androstenedione in the cloacal gland of LD birds but decreased it in that of SD birds. Corticosterone also partially blocked the photoinduced growth of the cloacal gland, but it slightly stimulated the growth of the gland in the SD birds. After 2 weeks of treatment SD (but not LD) corticosterone-treated birds had higher testicular weights than the corresponding controls. It is suggested that treatment with corticosterone might affect the hypothalamic-pituitary-gonadal axis partly through changes in the metabolism of testosterone.

scholarly journals Effect of Simulated Microgravity on Sexual Development of Male Japanese Quail

2009 ◽  
Vol 78 (4) ◽  
pp. 563-569 ◽  
Author(s):  
Peter Škrobánek ◽  
Magda Baranovská ◽  
Božena Šárniková ◽  
Marian Juráni ◽  
Michal Zeman ◽  
...  
Keyword(s):  
Japanese Quail ◽  
Sexual Development ◽  
Growth And Development ◽  
Simulated Microgravity ◽  
Plasma Testosterone ◽  
Testis Weight ◽  
Simulated Weightlessness ◽  
Testosterone Concentration ◽  
Foam Production ◽  
Cloacal Gland

Hypodynamia can be used to simulate weightlessness in laboratory conditions. The objective of our study was to investigate the effects of chronic hypodynamia on the growth and development of the testes and cloacal gland, and plasma testosterone concentration in Japanese quail. The testis weight in males reared under hypodynamia was significantly lower compared to agematched control between 21 and 63 days of age (P < 0.05). The cloacal gland area of experimental birds calculated from its width and length was also smaller in comparison with control quail from 35 to 56 days of age (P < 0.05). The foam production was significantly lower in hypodynamia males at age 35, 42, 49 and 63 days (P < 0.05). The plasma testosterone concentration was significantly reduced in hypodynamia birds between 35 and 70 days of age (P < 0.05), with the exception of day 56. These results provide further evidence that although hypodynamia negatively affects the examined variables, the male Japanese quail is able to develop normally under conditions of simulated weightlessness.

The role of the male cloacal gland in reproductive success in Japanese quail (Coturnix japonica)

2012 ◽  
Vol 24 (2) ◽  
pp. 405 ◽  
Author(s):  
R. P. Singh ◽  
K. V. H. Sastry ◽  
N. K. Pandey ◽  
K. B. Singh ◽  
I. A. Malecki ◽  
...  
Keyword(s):  
Japanese Quail ◽  
Normal Saline ◽  
Artificial Insemination ◽  
Coturnix Japonica ◽  
Fertile Period ◽  
Sperm Transport ◽  
Cloacal Gland ◽  
White Foam ◽  
Perivitelline Membrane

The adult male Japanese quail has a well developed cloacal gland that produces meringue-like white foam. The physiological significance of the cloacal gland and its foam is still unclear. Therefore, we conducted two experiments to establish the functional role of the cloacal gland and its foam in natural mating and oviducal sperm transport. In the first experiment, artificial insemination of equal numbers of spermatozoa diluted in foam extract and normal saline once in a week were used to determine the role of foam in sperm transport in the female oviduct. After artificial insemination, eggs were collected to measure fertility, the duration of the fertile period, sperm holes and attached spermatozoa in the perivitelline membrane. Higher (P < 0.05) fertility and greater duration of the fertile period were observed when semen was inseminated along with foam extract compared with normal saline. Further, the sperm holes and trapped spermatozoa in the perivitelline membrane were also higher (P < 0.05) in the presence of foam extract. In the second experiment, two males with bigger and smaller cloacal gland areas were allowed to mate with a female. The mating attempts of males with larger cloacal gland were more successful (P < 0.05) than males with smaller cloacal glands. Our results indicated that cloacal foam improves sperm transport in the female oviduct and that males with larger cloacal gland areas are preferred during mating.

Mating frequency in male Japanese quail: crosses among selected and unselected lines

1983 ◽  
Vol 25 (5) ◽  
pp. 450-456 ◽  
Author(s):  
D. E. Bernon ◽  
P. B. Siegel
Keyword(s):  
Genetic Variation ◽  
Mating Behavior ◽  
Japanese Quail ◽  
Mating Frequency ◽  
Base Population ◽  
Selected Lines ◽  
Gland Size ◽  
Parental Lines ◽  
Selection For ◽  
Cloacal Gland

The genetics of mating behavior in Japanese quail was investigated in replicated lines selected for high or low number of completed matings and the random bred control which served as the base population for the selected lines. Comparisons involved the parental lines, F1, F2, and backcross generations. Results indicate that mating frequency is influenced by additive and nonadditive genetic variation with the former being the primary heritable influence. The relationships between mating behavior, cloacal gland size, and relative aggressiveness suggest that selection for mating frequency influences factors commonly affecting these traits.

Residues of fluoroquinolone drugs in the cloacal gland and other tissues of Japanese quail

2006 ◽  
Vol 47 (1) ◽  
pp. 83-87 ◽  
Author(s):  
J. Mohan ◽  
K.V.H. Sastry ◽  
J.S. Tyagi ◽  
G.S. Rao ◽  
R.V. Singh
Keyword(s):  
Japanese Quail ◽  
Cloacal Gland

Interaction of surgical deafening and photoperiod on cloacal gland and testes size in Japanese quail

1988 ◽  
Vol 69 (3) ◽  
pp. 448-454 ◽  
Author(s):  
J.T. Kerlan ◽  
D.C. Blumenthal ◽  
J.T. Gilsdorf ◽  
J.M. Greenspon
Keyword(s):  
Japanese Quail ◽  
Testes Size ◽  
Cloacal Gland
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