1
|
Jiménez P, Cuamatzi E, González-Mariscal G. Study of copulatory behaviour in old male rabbits. WORLD RABBIT SCIENCE 2021. [DOI: 10.4995/wrs.2021.14216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
<p>Male rabbit sexual behaviour consists of a single mount followed immediately by ejaculation. In young bucks this pattern changes gradually as they reach sexual satiety in a day and sexual exhaustion after several daily tests. Little is known about the characteristics of sexual behaviour in old rabbits (aged 48-54 mo) within a day and across daily tests leading to sexual exhaustion. By using sexually receptive(young) females, changed within a session to maximise copulation, we found that: a) the inter-ejaculatory interval increased between the first and last days of testing; b) test duration was 3.1 h on day 1 and 0.5 h on day 15; c) the “miss rate” (i.e., mounts not accompanied by ejaculation) significantly increased from the first to the last day of testing, regardless of when this occurred in each individual buck; d) the total number of ejaculations displayed in a session significantly decreased between the first and the last day of testing in all males; e) scent-marking (“chinning”) frequency significantly decreased after copulation to satiety, relative to that quantified at baseline, and was restored the following day. Compared with young bucks our results indicate quantitative, rather than qualitative, differences in sexual behaviour associated with age in rabbits. Specifically, on day 1 old bucks spent a shorter time engaged in copulation and displayed a lower number of ejaculations before reaching satiety than young males. In contrast, the interval between ejaculatory events and the “miss rate” increased across test days in both old and young rabbits. These results merit investigating the neuroendocrine mechanisms underlying the display of such an active sexual behaviour by old rabbit bucks.</p>
Collapse
|
2
|
Jimenez P, Serrano-Meneses M, Cuamatzi E, González-Mariscal G. Analysis of sexual behaviour in male rabbits across successive tests leading to sexual exhaustion. WORLD RABBIT SCIENCE 2012. [DOI: 10.4995/wrs.2012.1034] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
|
3
|
Is an ovulation-inducing factor (OIF) present in the seminal plasma of rabbits? Anim Reprod Sci 2011; 127:213-21. [DOI: 10.1016/j.anireprosci.2011.08.004] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2011] [Revised: 08/04/2011] [Accepted: 08/10/2011] [Indexed: 11/19/2022]
|
4
|
Melo AI, González-Mariscal G. Communication by olfactory signals in rabbits: its role in reproduction. VITAMINS AND HORMONES 2011; 83:351-71. [PMID: 20831954 DOI: 10.1016/s0083-6729(10)83015-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
Rabbits use a variety of olfactory signals to transmit information related with reproduction. Such cues are produced in skin glands (submandibular, anal, Harder's, lachrymal, preputial) and the mammary gland-nipple complex. Some signals are transmitted by active behaviors, for example, chin-marking, urination, and defecation, while others are transmitted passively (e.g., mammary pheromone (MP) and inguinal gland secretions). We show that sex steroids regulate: chinning frequency and the chin gland's size, weight and secretory activity in bucks and does by acting on specific brain regions or on the chin gland, respectively. The "mammary pheromone," identified in milk as 2-methyl-but-2-enal, is essential for guiding the pups to the nipples, but its origin (mammary gland, ventral skin, nipple) remains to be determined. Estradiol, progesterone, and prolactin regulate the emission of an olfactory cue that also triggers nipple-search behavior in the pups, but its chemical identity and relation with the MP are unclear.
Collapse
Affiliation(s)
- Angel I Melo
- Centro de Investigación en Reproducción Animal, CINVESTAV-Universidad Autónoma de Tlaxcala, Tlaxcala, Tlax., México
| | | |
Collapse
|
5
|
Moralí G, Asunción Pía Soto M, Luis Contreras J, Arteaga M, González-Vidal MD, Beyer C. Detailed analysis of the male copulatory motor pattern in mammals: hormonal bases. Scand J Psychol 2003; 44:279-88. [PMID: 12914592 DOI: 10.1111/1467-9450.00346] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Data obtained, using a polygraphic technique, on the characteristics of the motor and genital copulatory responses of male rabbits, rats, mice, hamsters, and guinea pigs are reviewed. This methodology provided detailed information, not accessible to other analyses, on the frequency and dynamic organization of copulatory pelvic thrusting trains of the species studied. This comparative analysis showed that: (1) The male rat may display two types of ejaculatory responses, differing in the dynamic organization of the pelvic thrusting train, and in the duration of the intravaginal thrusting period preceding ejaculation. (2) In the guinea pigs and small rodents, but not in rabbits, pelvic thrusting at ejaculatory responses persists during intromission, and a period of fast intravaginal thrusting is associated with ejaculation. (3) The motor copulatory pattern of the rabbit, but not of the rat, hamster, or guinea pig, is affected by castration and hormone treatment, suggesting that, in rabbits, androgen acts both on motivation and on the spinal neural systems related to copulation.
Collapse
Affiliation(s)
- Gabriela Moralí
- Unidad de Investigación Médica en Farmacología, Centro Médico Nacional Siglo XXI, IMSS, Mexico.
| | | | | | | | | | | |
Collapse
|
6
|
Roberts RL, Wolf KN, Sprangel ME, Rall WF, Wildt DE. Prolonged mating in prairie voles (Microtus ochrogaster) increases likelihood of ovulation and embryo number. Biol Reprod 1999; 60:756-62. [PMID: 10026127 DOI: 10.1095/biolreprod60.3.756] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Prairie voles are induced ovulators that mate frequently in brief bouts over a period of approximately 24 h. We examined 1) impact of mating duration on ovulation and embryo number, 2) incidence of fertilization, 3) temporal pattern of embryo development, 4) embryo progression through the reproductive tract over time, and 5) embryo development in culture. Mating was videotaped to determine first copulation, and the ovaries were examined and the reproductive tracts flushed at 6, 8, 10, 12, 16, 20, and 24 h and 2, 3, and 4 days after first copulation. The number of mature follicles and fresh corpora lutea and the number and developmental stage of embryos were quantified. One, two-, and four-cell embryos were cultured in Whitten's medium. Mature follicles were present at the earliest time examined (6 h). Thirty-eight percent of females that had been paired for < 12 h after the first copulation ovulated, whereas all females paired >/= 12 h after the first copulation ovulated. Virtually all (> 99%) oocytes recovered from females paired for >/= 12 h after first copulation were fertilized. Pairing time after first copulation and mean copulation-bout duration were significant (p < 0.05) determinants of embryo number. Embryos entered the uterine horns and implanted on Days 3 and 4, respectively, after first copulation (Day 0). Embryos cultured in vitro underwent approximately one cell division per day, a rate similar to that in vivo. We conclude that prairie voles ovulate reliably after pairing for >/= 12 h, although some females showed exceptional sensitivity not predicted by the variables quantified. Prolonged mating for longer than 12 h increased the total embryos produced. This mechanism likely has adaptive significance for increasing offspring number.
Collapse
Affiliation(s)
- R L Roberts
- Reproductive Physiology Program, National Zoological Park, Smithsonian Institution,Washington, District of Columbia 20008, USA.
| | | | | | | | | |
Collapse
|
7
|
Arteaga M, Morali G. Characteristics of the motor and genital copulatory responses of the male hamster. JOURNAL OF PHYSIOLOGY, PARIS 1997; 91:311-6. [PMID: 9457664 DOI: 10.1016/s0928-4257(97)82412-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The temporal and dynamic characteristics (duration, frequency, rhythmicity, and vigor) of pelvic thrusting displayed by 17 male golden hamsters during their copulatory behavioral responses: mounts, intromissions, ejaculations, and long intromissions, as well as their temporal correlation with the genital contacts established by intravaginal penile insertion, were studied by an accelerometric and polygraphic technique. Pelvic thrusting in all copulatory behavioral responses appeared as series or trains of rhythmical, synchronic, vigorous movements. The various pelvic thrusting trains lasted around 1 s on average, but those of mounts were significantly longer than the trains displayed in the other behavioral responses. The frequencies of pelvic thrusting were similar in all responses (around 15 thrusts per s) excepting mounts which had lower values. In intromission, ejaculation, and long intromission responses, when penile insertion occurred, pelvic thrusting either was interrupted or showed changes in its characteristics: penile insertion was related to a period without thrusting in intromissions, to a series of intravaginal thrusting of higher frequency (16.4 thrusts per s) and lower vigor in ejaculations, and to a prolonged period of 6 to 25 s of slow intravaginal pelvic thrusting (1-2 thrusts per s) in long intromissions. Penile insertion lasted longer in ejaculations than in intromissions and it was significantly shorter in both of these responses than in long intromissions. These results provide information about some dynamic aspects of sexual behavior in hamsters, as well as a temporal correlation between the motor and genital components of this behavior.
Collapse
Affiliation(s)
- M Arteaga
- Unidad de Investigacion Medica en Farmacologia, Hospital de Cardiologia, Centro Medico Nacional Siglo XXI, IMSS, Mexico City, DF, Mexico
| | | |
Collapse
|
8
|
Abstract
The male copulatory pattern uses muscles in the penis for erection and penile insertion, the lower trunk for pelvic thrusting, and the sex accessory organs for seminal emission. Organization of the nuclei controlling penile muscles is achieved through cell growth, dendritic arborization, and synaptogenesis, actions dependent on androgen but not estrogen. Testosterone (T) and dihydrotestosterone (DHT) but not estradiol (E2), stimulate pelvic thrusting vigor by synchronizing discharge of motoneurons innervating pelvic muscles. Pelvic thrusting rhythmicity, regulated by spinal interneurons, is produced in female rabbits by E2 or T but not by DHT. Reflex contraction of the seminal vesicles, due to penile insertion, is facilitated by androgen presumably by its effect on preganglionic neurons of the hypogastric nerve, located in the dorsal commissural nucleus.
Collapse
Affiliation(s)
- C Beyer
- Centro de Investigación en Reproducción Animal; CINVESTAV-Universidad Autónoma de Tlaxcala, Mexico
| | | |
Collapse
|
9
|
Motor Aspects of Masculine Sexual Behavior in Rats and Rabbits. ADVANCES IN THE STUDY OF BEHAVIOR 1992. [DOI: 10.1016/s0065-3454(08)60145-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
|
10
|
Agmo A, Contreras JL, Paredes R. Sexual behavior and copulatory thrusting patterns in male rabbits treated with GABA transaminase inhibitors. Physiol Behav 1991; 49:73-8. [PMID: 2017484 DOI: 10.1016/0031-9384(91)90233-e] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The effects of enhanced central nervous system GABA levels on sexual behavior and copulatory pelvic thrusting were evaluated in male New Zealand white rabbits. The GABA transaminase inhibitors sodium valproate and gamma-acetylen GABA (GAG), in doses of 100 and 200 mg/kg and 50 and 100 mg/kg, respectively, were intraperitoneally administered and sexual behavior recorded at several intervals after drug administration. At the same time, copulatory thrusting was registered using a polygraphic technique. Tests for gross motor functions were also performed. None of the drugs had any effect in these latter tests. Sodium valproate, in a dose of 100 mg/kg, had a slight inhibitory effect on sexual behavior at 280 min postinjection. A dose of 200 mg/kg inhibited sexual activity already 15 min postinjection, and the effect lasted for at least 280 min. GAG, 100 mg/k, inhibited mounting behavior at 8 h postinjection, and ejaculation was reduced from 2 to at least 8 h postinjection. Copulatory thrusting patterns were not affected by the drug treatments. These data suggest that increased GABAergic activity reduces sexual arousal in the rabbit. GABA does not seem to be critically involved in the regulation of the motor patterns underlying pelvic thrusting. There are important quantitative and qualitative differences between rats and rabbits with regard to the actions of GABA transaminase inhibitors upon sexual functions.
Collapse
Affiliation(s)
- A Agmo
- Facultad de Ciencias Biológicas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Mexico
| | | | | |
Collapse
|
11
|
Moralí G, Carrillo L, Beyer C. Neonatal androgen influences sexual motivation but not the masculine copulatory motor pattern in the rat. Physiol Behav 1985; 34:267-75. [PMID: 4001188 DOI: 10.1016/0031-9384(85)90115-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Masculine sexual responses displayed by female rats, were compared to those of males. Twenty-five percent of females mounted and 19% showed intromission behavior, but none of them displayed the ejaculation pattern. Masculine sexual behavior was displayed in all stages of the estrous cycle. Accelerometric and spectrum frequency analysis of electrical signals generated by pelvic movements during mounting and intromission showed that these patterns were identical in both sexes excepting that mount duration in females was longer than in males. Neonatal androgenization of females increased the display of intromission patterns. Treatment of ovariectomized rats, androgenized or not, with either estradiol benzoate or testosterone propionate stimulated masculine sexual behavior. The ejaculatory pattern was only displayed by neonatally androgenized females. Mounting and intromission motor patterns of females under steroid treatment, and ejaculations of neonatally androgenized females, were similar to those of males. The results show that the organization of the movements involved in masculine sexual behavior in rats are identical in both sexes, thus suggesting that the neural circuits controlling these behaviors could be identical. Neonatal or postpubertal androgen in the rat influences the frequency with which male-like responses are displayed, but not their temporal (frequency, rhythm) or dynamic (acceleration, vigour) characteristics.
Collapse
|
12
|
Sachs BD. Potency and Fertility: Hormonal and Mechanical Causes and Effects of Penile Actions in Rats. PROCEEDINGS IN LIFE SCIENCES 1983. [DOI: 10.1007/978-3-642-69216-1_7] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
13
|
Beyer C, Contreras JL, Moralí G, Larsson K. Effects of castration and sex steroid treatment on the motor copulatory pattern of the rat. Physiol Behav 1981; 27:727-30. [PMID: 7323176 DOI: 10.1016/0031-9384(81)90247-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|