TY - JOUR
T1 - Social and developmental influences on reproductive function in female wied's black tufted-ear marmosets (Callithrix kuhli)
AU - Smith, Tessa E.
AU - Schaffner, Colleen M.
AU - French, Jeffrey A.
N1 - Funding Information:
The colony of C. kuhli was established at our facility with the help of Dr. A. Pissinatti and A. Coimbra-Filho from the Centro de Primatologia do Rio de Janerio. We thank Denise Hightower-Merritt and Danny Revers for their excellent maintenance of the marmoset colony. The authors are extremely grateful to L. Angel, L. Whitten, D. Jorgenson, J. Fite, and B. McGreer-Whitworth for their help with collecting urine samples, and two anonymous reviewers for comments on earlier drafts of the manuscript. Reagents for the hormone assays were kindly provided by Dr. Bill Lasley and Coralie Munroe, University of California, Davis (steroid EIA); Dr. Jan Roser, University of California, Davis (LH primary antibody); National Hormone and Pituitary Program, NIDDK, NICHD, and the USDA (LH standards). Financial support for the study was provided by grants from the National Science Foundation (IBN 92-09528 and OSR 92-55225) and from the UNO Animal Care Fund.
PY - 1997/4
Y1 - 1997/4
N2 - Although marmoset social groups may contain multiple adult females, reproduction is typically limited to one breeding female. A variety of endocrine and behavioral mechanisms have been identified that regulate fertility among female marmosets. In the present study, we assessed the mechanism(s) by which fertility is regulated in female black tufted-ear marmosets, Callithrix kuhli. The reproductive status of 10 daughters aged 2- 24 months was evaluated by measuring concentrations of urinary pregnane-diol 3α glucuronide (PdG) and luteinizing hormone (LH). Concentrations of the two hormones were typically low in daughters less than 12 months of age, and the profiles suggested anovulation (mean PdG < 2 μg/mg Cr and mean LH < 6 ng/mg Cr). Concentrations of PdG rose dramatically in females older than 12 months. Eight subadult daughters commenced ovulatory function while still living with their family, and the remaining two failed to ovulate. The onset of ovarian function coincided with a change in the social environment in two females, but the remaining six females commenced spontaneous ovarian activity that was not associated with any social or environmental factor (mean age: 15.6 ± 1.6 months). Ovulatory function was monitored in five daughters while housed in their natal family group, while removed from the natal family group and housed singly, and while paired with an unrelated and unfamiliar male. The ovarian cycles of these females housed in the natal group were characterized by significantly shorter luteal phases and reduced PdG concentrations, relative to when the females were housed on their own, and relative to adult breeding females (n = 6). Stimulatory cues from unfamiliar males were not necessary to trigger regular ovarian function in females. In this species, the regulation of fertility in daughters is a complex combination of behavioral and endocrine factors.
AB - Although marmoset social groups may contain multiple adult females, reproduction is typically limited to one breeding female. A variety of endocrine and behavioral mechanisms have been identified that regulate fertility among female marmosets. In the present study, we assessed the mechanism(s) by which fertility is regulated in female black tufted-ear marmosets, Callithrix kuhli. The reproductive status of 10 daughters aged 2- 24 months was evaluated by measuring concentrations of urinary pregnane-diol 3α glucuronide (PdG) and luteinizing hormone (LH). Concentrations of the two hormones were typically low in daughters less than 12 months of age, and the profiles suggested anovulation (mean PdG < 2 μg/mg Cr and mean LH < 6 ng/mg Cr). Concentrations of PdG rose dramatically in females older than 12 months. Eight subadult daughters commenced ovulatory function while still living with their family, and the remaining two failed to ovulate. The onset of ovarian function coincided with a change in the social environment in two females, but the remaining six females commenced spontaneous ovarian activity that was not associated with any social or environmental factor (mean age: 15.6 ± 1.6 months). Ovulatory function was monitored in five daughters while housed in their natal family group, while removed from the natal family group and housed singly, and while paired with an unrelated and unfamiliar male. The ovarian cycles of these females housed in the natal group were characterized by significantly shorter luteal phases and reduced PdG concentrations, relative to when the females were housed on their own, and relative to adult breeding females (n = 6). Stimulatory cues from unfamiliar males were not necessary to trigger regular ovarian function in females. In this species, the regulation of fertility in daughters is a complex combination of behavioral and endocrine factors.
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U2 - 10.1006/hbeh.1997.1380
DO - 10.1006/hbeh.1997.1380
M3 - Article
C2 - 9154436
AN - SCOPUS:0031128009
VL - 31
SP - 159
EP - 168
JO - Hormones and Behavior
JF - Hormones and Behavior
SN - 0018-506X
IS - 2
ER -