Suckling and lactational anoestrus in wild gorillas (Gorilla gorilla).
Suckling and lactational anoestrus in wild gorillas (Gorilla gorilla).
复制标题
野生大猩猩(大猩猩)的哺乳期和哺乳期不发情。
DOI:
10.1530/jrf.0.0830627
复制
发表时间:
1988
期刊:
影响因子:
--
通讯作者:
K. Stewart
中科院分区:
文献类型:
--
作者:
K. Stewart
The present observations of wild gorillas demonstrate that lactation has a major influence on birth spacing. The frequency of suckling declined as infants matured, from greater than 1/h during the first year to about 1/2 h by 30-36 months when mothers usually resumed sexual cycling. In contrast, the length of suckling bouts remained relatively constant throughout lactation, averaging between 2.6 and 3.2 min per bout. Within infant age categories, suckling frequencies of less than or equal to 0.5 bouts/h were associated with mothers who had resumed cycling, whereas higher frequencies were associated with mothers who were still anoestrous. These results complement those obtained from studies of breast-feeding in humans, and support the suggestion that the frequency of suckling is a critical factor in the contraceptive effects of lactation.