Rank and reproduction in the female spotted hyaena.
Rank and reproduction in the female spotted hyaena.
复制标题
雌性斑鬣狗的等级和繁殖。
DOI：
10.1530/jrf.0.1080229
复制
发表时间：
1996
期刊：
影响因子：
--
通讯作者：
M. Szykman
中科院分区：
文献类型：
--
作者：
K. Holekamp;L. Smale;M. Szykman
在许多群居哺乳动物中，包括灵长类动物、有蹄类动物和食肉动物，雌性的繁殖成功率因社会地位而异。斑点鬣狗（Crocuta Crocuta）的社会群体是由等级统治关系构成的，这种关系决定了个体获得食物和其他资源的优先级。在肯尼亚自由生活的Crocuta人口中，研究了女性社会地位对生殖成功的若干指标的影响。对研究种群进行了7年的连续观察，从而有可能记录产仔数量、生育间隔、幼崽断奶年龄、断奶和怀孕之间的间隔、幼崽的年产仔率以及后代的存活率到生殖成熟。在整个研究期间，通过监测猎物的丰度，研究了食物的可获得性、社会地位和雌性生育能力之间的关系。大多数生育表现的衡量标准都受到社会地位的强烈影响。地位高的雌性开始在更年轻的年龄繁殖，更经常能够同时怀孕和哺乳，产仔间隔更短，并且比地位低的雌性产生更多的存活后代。当猎物丰富时，低等级的雌性表现出比猎物相对稀少时更好的繁殖性能。相比之下，等级高的雌虫的繁殖表现总是优于等级低的雌虫，并且不随猎物丰度的变化而变化。因此，地位高的雌性的生育能力似乎比地位低的雌性更不容易受到食物供应波动的影响。
Female reproductive success varies with social rank in many gregarious mammals, including primates, ungulates and carnivores. Social groups of spotted hyaenas (Crocuta crocuta) are structured by hierarchical dominance relationships that determine individuals' priority of access to food and other resources. The influence of female social rank on several measures of reproductive success was examined in a population of free-living Crocuta in Kenya. The study population was continuously observed for seven years, making it possible to document litter sizes, interbirth intervals, ages of cubs at weaning, intervals between weaning one litter and conceiving the next, annual rates of production of cubs, and survival of offspring to reproductive maturity. The relationship between availability of food, social rank, and female fertility was examined by monitoring abundance of prey throughout the study period. Most measures of reproductive performance were strongly influenced by social rank. High-ranking females began breeding a younger ages, were more frequently able to support pregnancy and lactation concurrently experienced shorter intervals between litters, and produced more surviving offspring than did lower-ranking females. Low-ranking females exhibited better reproductive performance when prey animals were abundant than when prey were relatively scarce. By contrast, reproductive performance among high-ranking females was always superior to that exhibited by low-ranking females, and did not vary with prey abundance. Fertility among high-ranking females thus appeared to be less vulnerable to fluctuations in the food supply than was that among low-ranking females.
影响因子：
3.6
作者：
BRONSON, FH;MARSTELLER, FA
通讯作者：
MARSTELLER, FA
雄性贝尔丁地松鼠的性成熟：体重的影响。
影响因子：
3.6
作者：
Bushberg,DM;Holmes,WG
通讯作者：
Holmes,WG
环境和仓鼠繁殖：对发情周期期间特定阶段饥饿的反应。
DOI：
10.1152/ajpregu.1986.251.4.r663
发表时间：
1986
期刊：
The American journal of physiology
影响因子：
--
作者：
Morin,LP
通讯作者：
Morin,LP