Effects of siblings on reproductive maturation and infanticidal behavior in cooperatively breeding Mongolian gerbils.
Effects of siblings on reproductive maturation and infanticidal behavior in cooperatively breeding Mongolian gerbils.
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DOI：
10.1002/dev.20347
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发表时间：
2009-01
影响因子：
2.2
通讯作者：
Kolb, Erik M.
中科院分区：
文献类型：
--
作者：
Saltzman, Wendy;Thinda, Sumeer;Higgins, Alexis L.;Matsumoto, Wesley R.;Ahmed, Shahen;McGeehan, Laura;Kolb, Erik M.
关键词：
蒙古沙鼠与他们的纳塔尔家庭生活在一起，在帮助抚养年幼的兄弟姐妹时，生殖成熟延迟，而那些远离纳塔尔家庭的沙鼠可能成熟得更早，但经常对不熟悉的幼崽做出积极的反应。我们测试了与幼崽同居是否有助于生殖抑制和抑制杀婴行为，使用年轻的雄性和雌性与（1）他们的父母和年幼的兄弟姐妹（幼崽），（2）没有幼崽的父母，（3）混合性别的同窝出生组，或（4）不相关的同龄人的混合性别组。与父母同居抑制了雄性的成熟，而在幼仔的存在下进一步抑制了雌性的成熟。在所有住房条件下的男性表现出对不熟悉的幼崽很少的侵略，而女性通常是杀鸡儆猴，除非与幼崽住在一起。对幼崽的攻击在怀孕或处于排卵周期的雌性中尤其明显。因此，同居与弟弟妹妹可能会加剧生殖抑制和抑制杀精行为的雌性沙鼠，而雄性沙鼠表现出父母诱导的生殖抑制和低杀精率，即使在没有弟弟妹妹。
Mongolian gerbils living with their natal families undergo delayed reproductive maturation while helping to rear their younger siblings, whereas those housed away from their natal families may mature earlier but often respond aggressively to unfamiliar pups. We tested whether cohabitation with pups contributes to reproductive suppression and inhibition of infanticidal behavior, using young males and females housed with (1) their parents and younger siblings (pups), (2) parents without pups, (3) mixed-sex littermate groups, or (4) mixed-sex groups of unrelated peers. Maturation in males was inhibited by cohabitation with the parents, while maturation in females was further suppressed in the presence of pups. Males in all housing conditions showed little aggression towards unfamiliar pups, whereas females were usually infanticidal unless housed with pups. Aggression toward pups was especially pronounced in females that were pregnant or undergoing ovulatory cycles. Thus, cohabitation with younger siblings may intensify reproductive suppression and inhibit infanticidal behavior in female gerbils, whereas male gerbils exhibit parentally-induced reproductive suppression and low rates of infanticide even in the absence of younger siblings.
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影响因子：
2.5
作者：
AGREN, G;ZHOU, Q;ZHONG, W
通讯作者：
ZHONG, W
影响因子：
2.5
作者：
Clark, MM;Galef, BG
通讯作者：
Galef, BG
影响因子：
2.2
作者：
ELWOOD, RW
通讯作者：
ELWOOD, RW
影响因子：
2.4
作者：
HEISTERMANN, M;KLEIS, E;WOLTERS, HJ
通讯作者：
WOLTERS, HJ
DOI：
10.1098/rspb.1998.0573
发表时间：
1998-12-07
影响因子：
4.7
作者：
Clutton-Brock, TH;Brotherton, PNM;Skinner, JD
通讯作者：
Skinner, JD