EFFECT OF THE MANIPULATION OF SOCIAL-STRUCTURE ON REPRODUCTION IN HOUSE MICE
EFFECT OF THE MANIPULATION OF SOCIAL-STRUCTURE ON REPRODUCTION IN HOUSE MICE
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DOI：
10.2307/1938544
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发表时间：
1978-01-01
期刊：
影响因子：
4.8
通讯作者：
DELONG, KT
中科院分区：
文献类型：
--
作者：
DELONG, KT
社会和人口参数对生殖的影响进行了检查，删除任何成年。男性。，繁殖. female..女性或亚成体[小家鼠]的两种性别对人口为15个月。第4对8个群体不进行操作。删除. male..男性与成年女性比例下降有关。女性这成为经产，低身体生长速度为成熟。女性。女性。，低关联的男性和非女性。女性与成人.男性..男性和一个高协会的成年.男性..男性与非女性..女..经产妇切除术。女性导致雌性的早熟和繁殖。女性。，女性之间的负相关。''+和成人.男性..男性。，和更高的攻击性。多元回归分析表明，发情周期和哺乳期的最好的解释的活动。女性以及他们与成年男性的联系。男性。，前一个月断奶的幼仔数量，成年雄仔的百分比。男性在人群中和这些.男性的侵略倾向..男..攻击倾向的测量结果为...男性从群体中取出并与非攻击性对照小鼠配对。未产.雌性..女性比经产的女性更敏感。女性社会行为或人口统计学的变化。以前未经产的窝。女性聚集在某些月份，而产窝。女性随机出生。虽然大多数.女性.女性在种群增长的后期阶段未能繁殖，这种繁殖抑制并不总是永久性的。当非繁殖.女性..女性从种群中取出，转移到小笼子里，与成年雄性配对。男性1/2的种群在1个月内繁殖。雏鸟的存活率受到攻击行为的数量，成年人或人口中的任何性别的比例，以及哺乳期和哺乳期的比例的负面影响。女..只有男性。优势度与窝仔存活率呈正相关。最近断奶的小鼠的性别比变化很大，是类似的成年人中发现的，即使当删除成年人的1个性别造成的成年人的性别比显着不平等。
The influence of social and demographic parameters on reproduction was examined by removing either adult .male..male., breeding .female..female. or subadults [of Mus musculus] of both sexes from pairs of populations for 15 mo. The 4th pair of 8 populations was not manipulated. Removal of .male..male. was associated with a decreased proportion of adult .female..female. which became parous, low body growth rates for maturing .female..female., low association of perforate and nonperforate .female..female. with adult .male..male. and a high association of adult .male..male. with nonperforate .female..female.. Removal of parous .female..female. led to earlier maturation and breeding of .female..female., negative association between perforate .female.''+ and adult .male..male., and higher levels of aggression in the populations. Multiple regression techniques indicated that estrous cycling and lactation were best explained by the activity of nonperforate .female..female. and their association with adult .male..male., the number of young weaned the previous month, the percentage of adult .male..male. in the populations and the aggressive tendency of these .male..male.. Aggressive tendency was measured in .male..male. removed from the populations and paired with nonaggressive control mice. Nulliparous .female..female. were more sensitive than parous .female..female. to changes in social behavior or demography of a population. Litters born to previously nulliparous .female..female. were clustered on certain months, while litters of parous .female..female. were born randomly. Although most .female..female. failed to reproduce during the later stages of population growth, this inhibition of reproduction was not always permanent. When nonbreeding .female..female. were removed from the populations, transferred to small cages and paired with adult .male..male. from the populations, 1/2 reproduced within 1 mo. Nestling survival was influenced negatively by the number of aggressive acts, the proportion of adults or either sex in the population, and the proportion of perforate and lactating .female..female.. Only .male. dominance had a postive correlation with litter survival. The sex ratio of recently weaned mice varied greatly and was similar to that found among adults, even when the removal of adults of 1 sex caused the adult sex ratio to be markedly unequal.