Testicular hormone and developmental changes in mating behavior of the male rat.

1967 ◽  
Vol 63 (2) ◽  
pp. 223-230 ◽  
Author(s):  
Knut Larsson
Keyword(s):  
Mating Behavior ◽  
Developmental Changes ◽  
Male Rat

Sexual Behavior is Enhanced by Regular, Repeated Mating from Young Adulthood to Middle Age in Female Long-Evans Rats

2020 ◽  
Vol 13 (2) ◽  
pp. 169-177
Author(s):  
Fay A. Guarraci ◽  
Chantal M.F. Gonzalez ◽  
Devon Lucero ◽  
Lourdes K. Davis ◽  
Sarah H. Meerts
Keyword(s):  
Sexual Behavior ◽  
Mating Behavior ◽  
Preference Test ◽  
Sexual History ◽  
Female Rats ◽  
Male Rat ◽  
Female Rat ◽  
Repeated Mating ◽  
First Time ◽  
Mating Tests

Background: Aging is associated neuroendocrine changes in women. Animals can be used to model these changes, as well as changes in reproductive behavior. Objective: The current study was designed to characterize mating behavior across age and assess the effects of age and sexual history on mating behavior. Methods: Sexual motivation was assessed using the partner-preference test, in which a female rat is given the choice to interact with a same-sex conspecific or a sexually-vigorous male rat, with which she can mate. Results: Across repeated mating tests (2-12 months of age), female rats spent more time with the male, displayed more solicitation behaviors, were less likely to leave the male after mounts, but visited both stimulus animals less frequently. Comparing a separate group of age-matched, hormoneyoked female rats mated for the first time at 12 months of age to female rats mated for the first time at 2 months of age showed that the 12 month rats visited both stimulus animals less, were less likely to leave the male after mounts, took longer to return to the male after mounts, and displayed fewer solicitation behaviors than their younger counterparts. Relative to middle-aged female rats once they were sexually experienced, 12 month naïve rats spent less time with the male, were more likely to leave the male after mounts, and displayed fewer solicitation behaviors. Furthermore, 12 month naïve rats failed to discriminate between the stimulus animals, visiting both stimulus animals at the same rate unlike 2 month naïve or 12 month experienced rats. Conclusion: Taken together, these results suggest that aging affects some measures of sexual behavior, but most effects of age can be mitigated by regular, repeated mating.

scholarly journals Long-range effects of castration on mating behavior in the male rat

1973 ◽  
Vol 2 (4) ◽  
pp. 215-216 ◽  
Author(s):  
Ariel Merari ◽  
Varda Shoham ◽  
Gershon Molad ◽  
Haim Perri
Keyword(s):  
Mating Behavior ◽  
Long Range ◽  
Male Rat

Long range effects of MPOA lesion on mating behavior in the male rat

1977 ◽  
Vol 120 (1) ◽  
pp. 158-163 ◽  
Author(s):  
Avital Ginton ◽  
Ariel Merari
Keyword(s):  
Mating Behavior ◽  
Long Range ◽  
Male Rat

Developmental Changes of Pyroglutamate-Peptidasei Activity in Several Regions of the Female and the Male Rat Brain

1994 ◽  
Vol 77 (1-2) ◽  
pp. 53-60 ◽  
Author(s):  
J. M. De Gandarias ◽  
J. Irazusta ◽  
D. Fernandez ◽  
A. Varona ◽  
L. Casis
Keyword(s):  
Rat Brain ◽  
Developmental Changes ◽  
Male Rat

Influence of Hypothyroidism Duration on Developmental Changes in the Hypothalamic Factors Implicated in Growth Hormone Secretion in the Male Rat

1991 ◽  
Vol 54 (4) ◽  
pp. 340-345 ◽  
Author(s):  
César Varela ◽  
Luanda Cacicedo ◽  
Gumersindo Fernández ◽  
Teresa de los Frailes ◽  
F. Sánchez Franco
Keyword(s):  
Growth Hormone ◽  
Hormone Secretion ◽  
Growth Hormone Secretion ◽  
Developmental Changes ◽  
Male Rat

scholarly journals Gonadal steroid receptors colocalize with central nervous system neurons projecting to the rat prostate gland

2007 ◽  
Vol 292 (6) ◽  
pp. R2196-R2205 ◽  
Author(s):  
Gloria G. Huddleston ◽  
C. Kay Song ◽  
Jacquelyn C. Paisley ◽  
Timothy J. Bartness ◽  
Andrew N. Clancy
Keyword(s):  
Mating Behavior ◽  
Pseudorabies Virus ◽  
Steroid Receptors ◽  
Prostate Gland ◽  
Copulatory Behavior ◽  
Zona Incerta ◽  
Female Rats ◽  
Central Nucleus ◽  
Male Rat ◽  
Bed Nucleus

Mating-induced Fos-immunoreactive (-ir) cells are colocalized with androgen receptors (AR), estrogen receptors (ER), or both in limbic and hypothalamic areas known to mediate male rat mating behavior. A steroid-responsive neural network might govern copulatory behavior in male laboratory rats that is analogous to the network described in female rats that governs the lordosis response. This hypothesized network in males may synchronize and coordinate sexual behavioral responses with physiological responses of the genitals and the internal organs of reproduction. Therefore, the pseudorabies virus (PRV; Bartha strain), a transneuronal, viral retrograde tract tracer, was microinjected into the prostate gland to label this network. After 7 days, brains from infected animals were processed for immunohistochemical labeling of AR, ER, and PRV. The majority of PRV-ir cells exhibited either AR or ER immunoreactivity in the medial preoptic area, median preoptic nucleus, bed nucleus of stria terminalis, hypothalamic paraventricular nucleus, and zona incerta, areas known to play roles in male rat mating behavior. Other structures such as the central tegmental field/subparafascicular nucleus of the thalamus, central nucleus of the amygdala, and medial amygdala, also important in the display of male copulatory behavior, were less reliably labeled. Collectively, a steroid receptor-containing neuronal circuit, largely contained in the diencephalon, was revealed that likely is involved in the autonomic control of the prostate gland and the consummatory aspects of male rat mating behavior.

DEVELOPMENTAL CHANGES IN THE DEGRADATION OF THYROTROPHIN RELEASING HORMONE BY THE SERUM AND BRAIN TISSUES OF THE MALE RAT

1977 ◽  
Vol 74 (2) ◽  
pp. 339-340 ◽  
Author(s):  
C. OLIVER ◽  
C. R. PARKER ◽  
J. C. PORTER
Keyword(s):  
Medical School ◽  
Developmental Changes ◽  
Male Rats ◽  
Male Rat ◽  
Obstetrics And Gynecology ◽  
Adult Rats ◽  
Thyrotrophin Releasing Hormone ◽  
Releasing Hormone ◽  
Old Rats ◽  
Phosphate Buffered Saline

*Laboratoire de Médecine Expérimentale, UER Médecine Nord, Boulevard Pierre Dramard, 13326 Marseille Cedex 3, France and †Department of Obstetrics and Gynecology, Southwestern Medical School, 5323 Harry Hines Boulevard, Dallas, Texas 75235, U.S.A. (Received 15 March 1977) Thyrotrophin releasing hormone (TRH) is rapidly degraded when incubated at 37 °C with plasma (Redding & Schally, 1969) or brain homogenates (Bassiri & Utiger, 1974) from adult rats. However, immunoreactive TRH is stable in serum obtained from rats less than 2 weeks old (Oliver, Taurog & Porter, 1974). No loss of biological or immunological TRH activity occurs during incubation with serum from 4- or 16-day-old rats (Neary, Kieffer, Federico, Mover, Maloof & Soodak, 1976). In this report, we have determined the TRH degrading activity of brain homogenates and serum obtained from male rats at various stages of development after birth. Synthetic TRH (1 ng, Beckman Instruments, Inc.) diluted in 50 μl phosphate-buffered saline (0·01

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