Urinary progesterone in free-ranging red howler monkeys (Alouatta seniculus): Preliminary observations of the estrous cycle and gestation

Ovarian cycle of southern brown howler monkey (Alouatta guariba clamitans) through fecal progestin measurement

“…These results also are in agreement with descriptions of ovarian cycles for the genus using other methodologies, as well as reviewed by Van Belle (2015): vaginal cytology in A. caraya, 19.7 ± 1 days (Colillas and Coppo 1978), 19.8 ± 0.9 days (Kugelmeier et al 2011); observation of copulations in A. seniculus, 17 days (Crockett and Sekulic 1982); and sexual behavior, together with genital morphological changes in A. palliata, 16.3 ± 0.7 days (Glander 1980). The only real discrepancy in the set of data presented for the genus was described by Herrick et al (2000), who reported a mean ovarian cycle of 29.5 ± 0.5 days for A. seniculus using urinary metabolites.…”

Ovarian cycle of southern brown howler monkey (Alouatta guariba clamitans) through fecal progestin measurement

“…These results also are in agreement with descriptions of ovarian cycles for the genus using other methodologies, as well as reviewed by Van Belle (2015): vaginal cytology in A. caraya, 19.7 ± 1 days (Colillas and Coppo 1978), 19.8 ± 0.9 days (Kugelmeier et al 2011); observation of copulations in A. seniculus, 17 days (Crockett and Sekulic 1982); and sexual behavior, together with genital morphological changes in A. palliata, 16.3 ± 0.7 days (Glander 1980). The only real discrepancy in the set of data presented for the genus was described by Herrick et al (2000), who reported a mean ovarian cycle of 29.5 ± 0.5 days for A. seniculus using urinary metabolites.…”

Stability of bovine milk progesterone under different storage and thawing conditions

“…Whereas P4 is commonly measured in plasma or serum, it can also be determined in a variety of other biological materials, including urine (Herrick et al 2000), feces (Isobe et al 2005), saliva (Walker et al 1979;Gandara et al 2006), and milk (Pennington et al 1976;Fayemi et al 1982;Solti et al 1986;Ucar et al 2004). As in most other species, monitoring dairy cow reproductive status requires repeated sampling.…”

Roaring Behavior of Two Syntopic Howler Species (Alouatta caraya and A. guariba clamitans): Evidence Supports the Mate Defense Hypothesis

“…However, we observed only six copulations over the entire study period. Further, although Van Belle et al (2009) showed that black howler females concentrate copulations during the periovulatory period, when conception is most likely, there is also evidence that in some howler populations females copulate during the entire cycle (Herrick et al 2000;Kowalewski and Garber 2010). Reproductive Roaring Behavior of Two Syntopic Howler Species activity thus may not be a reliable indicator of probability of conception/paternity.…”

Ovarian cycle of southern brown howler monkey (Alouatta guariba clamitans) through fecal progestin measurement

“…These results also are in agreement with descriptions of ovarian cycles for the genus using other methodologies, as well as reviewed by Van Belle (2015): vaginal cytology in A. caraya, 19.7 ± 1 days (Colillas and Coppo 1978), 19.8 ± 0.9 days (Kugelmeier et al 2011); observation of copulations in A. seniculus, 17 days (Crockett and Sekulic 1982); and sexual behavior, together with genital morphological changes in A. palliata, 16.3 ± 0.7 days (Glander 1980). The only real discrepancy in the set of data presented for the genus was described by Herrick et al (2000), who reported a mean ovarian cycle of 29.5 ± 0.5 days for A. seniculus using urinary metabolites.…”

Stability of bovine milk progesterone under different storage and thawing conditions

“…Whereas P4 is commonly measured in plasma or serum, it can also be determined in a variety of other biological materials, including urine (Herrick et al 2000), feces (Isobe et al 2005), saliva (Walker et al 1979;Gandara et al 2006), and milk (Pennington et al 1976;Fayemi et al 1982;Solti et al 1986;Ucar et al 2004). As in most other species, monitoring dairy cow reproductive status requires repeated sampling.…”

Roaring Behavior of Two Syntopic Howler Species (Alouatta caraya and A. guariba clamitans): Evidence Supports the Mate Defense Hypothesis

“…However, we observed only six copulations over the entire study period. Further, although Van Belle et al (2009) showed that black howler females concentrate copulations during the periovulatory period, when conception is most likely, there is also evidence that in some howler populations females copulate during the entire cycle (Herrick et al 2000;Kowalewski and Garber 2010). Reproductive Roaring Behavior of Two Syntopic Howler Species activity thus may not be a reliable indicator of probability of conception/paternity.…”

Ovarian cycle of southern brown howler monkey (Alouatta guariba clamitans) through fecal progestin measurement

“…These results also are in agreement with descriptions of ovarian cycles for the genus using other methodologies, as well as reviewed by Van Belle (2015): vaginal cytology in A. caraya, 19.7 ± 1 days (Colillas and Coppo 1978), 19.8 ± 0.9 days (Kugelmeier et al 2011); observation of copulations in A. seniculus, 17 days (Crockett and Sekulic 1982); and sexual behavior, together with genital morphological changes in A. palliata, 16.3 ± 0.7 days (Glander 1980). The only real discrepancy in the set of data presented for the genus was described by Herrick et al (2000), who reported a mean ovarian cycle of 29.5 ± 0.5 days for A. seniculus using urinary metabolites.…”

Stability of bovine milk progesterone under different storage and thawing conditions

“…Whereas P4 is commonly measured in plasma or serum, it can also be determined in a variety of other biological materials, including urine (Herrick et al 2000), feces (Isobe et al 2005), saliva (Walker et al 1979;Gandara et al 2006), and milk (Pennington et al 1976;Fayemi et al 1982;Solti et al 1986;Ucar et al 2004). As in most other species, monitoring dairy cow reproductive status requires repeated sampling.…”

Roaring Behavior of Two Syntopic Howler Species (Alouatta caraya and A. guariba clamitans): Evidence Supports the Mate Defense Hypothesis

“…However, we observed only six copulations over the entire study period. Further, although Van Belle et al (2009) showed that black howler females concentrate copulations during the periovulatory period, when conception is most likely, there is also evidence that in some howler populations females copulate during the entire cycle (Herrick et al 2000;Kowalewski and Garber 2010). Reproductive Roaring Behavior of Two Syntopic Howler Species activity thus may not be a reliable indicator of probability of conception/paternity.…”