The association between basal body temperature, plasma progesterone and the oestrous cycle in a marsupial, the Tasmanian bettong (Bettongia gaimardi)

Rose, R. W.; Jones, Susan

doi:10.1530/jrf.0.1060067

Cited by 8 publications

(6 citation statements)

References 23 publications

(34 reference statements)

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“…Leukocytes reappear and are abundant in vaginal smears depending on the species a few days after estrus [Rose and Jones, 1996]. These morphological changes, such as keratinization and leukocyte migration, also hold true for the vagina of M. domestica.…”

Section: Discussionmentioning

confidence: 80%

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Changes in the Epithelium of the Vaginal Complex during the Estrous Cycle of the Marsupial <i>Monodelphis domestica</i>

Kress

Regli

Spornitz³

et al. 2004

Cells Tissues Organs

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The four stages of the estrous cycle in Monodelphis domestica, namely proestrus, estrus, postestrus and the transitional metestrus, were analyzed with the scanning electron microscope and compared with the results of the previously published transmission electron-microscopic paper [Cells Tissues Organs 2002;172:276–296]. During the estrous cycle the vaginal epithelium undergoes dramatic changes from a nonkeratinized to a highly keratinized epithelium. The predominant feature of proestrus with the beginning of keratinization is the presence of polygonal flat cells with pavement-like appearance, bordered by raised ridges and covered with microvilli. The epithelium is fully keratinized in estrus, and the superficial layers overlap like shingles. Many cells are still densely covered by microvilli, whereas others develop a complex pattern of microridges. In postestrus different epithelial structures are revealed depending on the actual stage of desquamation. In early postestrus surface cells resemble those present during estrus. In late postestrus, when only few keratinized cells are left, the nonkeratinized cells become exposed to the lumen through desquamation. These cells border the lumen during metestrus, a cycle stage during which numerous leukocytes migrate into the vaginal canal. A number of these uppermost cells is probably not yet prepared to function as metestrus cells and are therefore sloughed off as well. During metestrus compact cell masses stick in the vaginal furrows. Epithelial surface cells are highly irregular and bulging with their microvilli covered surfaces in the vaginal lumen. This study represents the first comprehensive description of alterations on the surface ultrastructure of a marsupial vagina during the estrous cycle, demonstrating considerable differences in comparison to many eutherians.

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Section: Discussionmentioning

confidence: 80%

“…In Monodelphis, the most obvious vaginal changes occur near estrus as in most other marsupials [Tyndale-Biscoe and Renfree, 1987;Rose and Jones, 1996] when the epithelial cells rapidly cornify and leukocytes have disappeared. These changes are associated temporally with a rapid fall in progesterone concentrations just before estrus.…”

Section: Discussionmentioning

confidence: 99%

Changes in the Epithelium of the Vaginal Complex during the Estrous Cycle of the Marsupial <i>Monodelphis domestica</i>

Kress

Regli

Spornitz³

et al. 2004

Cells Tissues Organs

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show abstract

“…Measurement of the basal body temperature has been reported to be an effective method of documenting the estrous cycle [7] and to be an indicator of corpus luteum activity in cows [8]. A relationship between the ovarian cycle and body temperature has been also reported for several species of marsupials, such as the Tasmanian bettong (Bettongia gaimardi) [9], common wombats (Vombatus ursinus) [10] and marine mammals such as the beluga (Delphinapterus leucas) [11]. Furthermore, in some mammals, such as sheep [12], cattle [8], bottlenose dolphins (Tursiops truncates gilli) [13] and killer whales (Orcinus orca) [14], a decrease in body temperature has been observed from several hours to several days before parturition.…”

Section: )mentioning

confidence: 99%

“…A previous study measured the body temperatures of Tasmanian bettong using telemeters implanted in the abdominal cavity in order to assess their reproductive status [9]. Their body temperatures rose in relation to an increase in the plasma progesterone concentration.…”

Section: Relationship Between Body Temperature and Ovarian Cyclementioning

confidence: 99%

Relationship Between Body Temperature and Ovarian Cycle in Asian and African Elephants

Kusuda

Wakimoto

Sato

et al. 2007

Journal of Reproduction and Development

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Abstract. The aim of the present study was to investigate whether changes in body temperature are related to the ovarian cycle in elephants. Rectal, tongue or fecal temperature was measured for 2 Asian and 5 African elephants using an electric thermometer. Evaluation of ovarian cycles was based on the changes in serum or fecal progestin. The mean ± SD values of the rectal, tongue, and fecal temperatures were 36.3 ± 0.3 (2 Asian), 36.2 ± 0.5 (1 African) and 36.5 ± 0.3 C (4 African), respectively; the fecal temperature was the highest of the 3 temperatures (P<0.01). The longitudinal changes in body temperatures correlated with the ovarian cycle, with higher temperatures occurring during the luteal phase. The fecal temperatures of one acyclic African elephant did not change cyclically. These results suggest that measurement of body temperature can be used to easily evaluate the ovarian cyclicity of an individual animal, although it might not be able to determine the ovarian cycle length. Key words: Fecal temperature, Ovarian cycle, Progesterone, Rectal temperature, Tongue temperature (J. Reprod. Dev. 53: [1099][1100][1101][1102][1103][1104][1105] 2007) he body temperature and thermoregulatory behavior of the elephant have been studied for many years [1,2]. The methods used to measure the body temperatures of elephants include insertion of a clinical thermometer into the rectum (rectum temperature), insertion of a clinical thermometer into feces immediately after defecation (fecal temperature) and direct measurement of the temperature of urine midstream during urination (urinary temperature) [1,3]. It has been believed that measurement of the urine temperature is suitable for body temperature measurement because a large amount of urine is stored deep within the elephant's body [1]. However, measurement of the fecal temperature is a simple and safe method for large mammals such as the elephant [3]. It has been reported that the fecal temperature well reflects an elephant's rectal temperature and that the values are very similar [1]. The normal range of the rectal temperature of Asian (Elephas maximus) and African elephants (Loxodonta africana) is 36 to 37 C [4,5], and a fever of 38 C is considered significant [5].In female humans and chimpanzees (Pan troglo-

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“…In eutherian and marsupial mammals, T b can provide useful information on the timing of ovulation, with a raised T b coinciding with a rise in progesterone (de Mouzon et al, 1984;Rose and Jones, 1996). In echidnas, T b provides a useful guide to the timing of egg-laying.…”

Section: Discussionmentioning

confidence: 99%

Body temperature as an indicator of egg-laying in the echidna, Tachyglossus aculeatus

Nicol

Andersen

2006

Journal of Thermal Biology

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The association between basal body temperature, plasma progesterone and the oestrous cycle in a marsupial, the Tasmanian bettong (Bettongia gaimardi)

Cited by 8 publications

References 23 publications

Changes in the Epithelium of the Vaginal Complex during the Estrous Cycle of the Marsupial <i>Monodelphis domestica</i>

Changes in the Epithelium of the Vaginal Complex during the Estrous Cycle of the Marsupial <i>Monodelphis domestica</i>

Relationship Between Body Temperature and Ovarian Cycle in Asian and African Elephants

Body temperature as an indicator of egg-laying in the echidna, Tachyglossus aculeatus

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