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Food Deprivation and Restriction During late Gestation Affect the Sexual Behavior of Postpartum Female Meadow Voles,Microtus pennsylvanicus
Ethology ( IF 1.7 ) Pub Date : 2012-11-14 , DOI: 10.1111/eth.12033
Ramona M Sabau 1 , Michael H Ferkin 1
Affiliation  

In many species of small mammals, including meadow voles, Microtus pennsylvanicus, females come into postpartum estrus (PPE) within 12-24 h of giving birth, allowing them to mate and become pregnant while raising the current litter. PPE females show increases in attractivity, proceptivity, and receptivity, the three components of sexual behavior, relative to females not in PPE. Several studies have shown that food deprivation and restriction reduce attractivity, proceptivity, and receptivity of females not in PPE. We tested the hypothesis that food deprivation and restriction during late gestation causes deficits and decreases the attractivity, proceptivity, and receptivity of females when they enter PPE. Our data support the hypothesis. On day 1 of lactation, females that were food deprived and food restricted produced scent marks that were significantly less attractive as those produced by control PPE females. Food deprivation but not food restriction caused females to no longer display significant preferences for the scent marks of males over those of females (proceptivity). Food deprivation and food restriction were sufficient to induce females to become significantly less sexually receptive than control females. Eleven of 12 control PPE females mated, 4 of 12 food-restricted females mated, and 3 of 12 food-deprived females mated. Dams facing food deprivation or restriction during late gestation may have to balance the benefits of mating during PPE with the increased costs associated with getting pregnant while they are lactating.

中文翻译:

妊娠晚期禁食与限制影响产后雌性田鼠的性行为

在许多种类的小型哺乳动物中,包括草甸田鼠、宾夕法尼亚田鼠,雌性在分娩后 12-24 小时内进入产后发情 (PPE),使它们能够在饲养当前窝的同时交配并怀孕。与未佩戴 PPE 的女性相比,PPE 女性表现出吸引力、倾向性和接受性(性行为的三个组成部分)的增加。几项研究表明,食物剥夺和限制会降低未佩戴 PPE 的女性的吸引力、倾向性和接受性。我们检验了以下假设,即妊娠晚期的食物剥夺和限制会导致女性在进入 PPE 时出现缺陷并降低她们的吸引力、倾向性和接受性。我们的数据支持这一假设。在哺乳期的第 1 天,被剥夺食物和食物限制的雌性产生的气味标记明显不如对照 PPE 雌性产生的气味标记有吸引力。食物剥夺而不是食物限制导致女性不再对男性的气味标记表现出明显的偏好(感受性)。食物剥夺和食物限制足以诱导雌性比对照雌性显着降低性接受度。12 只控制 PPE 雌性中有 11 只交配,12 只食物受限雌性中有 4 只交配,12 只食物剥夺雌性中有 3 只交配。在妊娠后期面临食物匮乏或限制的水坝可能必须在 PPE 期间交配的好处与在哺乳期怀孕相关的成本增加之间取得平衡。食物剥夺而不是食物限制导致女性不再对男性的气味标记表现出明显的偏好(感受性)。食物剥夺和食物限制足以诱导雌性比对照雌性显着降低性接受度。12 只控制 PPE 雌性中有 11 只交配,12 只食物受限雌性中有 4 只交配,12 只食物剥夺雌性中有 3 只交配。在妊娠后期面临食物匮乏或限制的水坝可能必须在 PPE 期间交配的好处与在哺乳期怀孕相关的成本增加之间取得平衡。食物剥夺而不是食物限制导致女性不再对男性的气味标记表现出明显的偏好(感受性)。食物剥夺和食物限制足以诱导雌性比对照雌性显着降低性接受度。12 只控制 PPE 雌性中有 11 只交配,12 只食物受限雌性中有 4 只交配,12 只食物剥夺雌性中有 3 只交配。在妊娠后期面临食物匮乏或限制的水坝可能必须在 PPE 期间交配的好处与在哺乳期怀孕相关的成本增加之间取得平衡。食物剥夺和食物限制足以诱导雌性比对照雌性显着降低性接受度。12 只控制 PPE 雌性中有 11 只交配,12 只食物受限雌性中有 4 只交配,12 只食物剥夺雌性中有 3 只交配。在妊娠后期面临食物匮乏或限制的水坝可能必须在 PPE 期间交配的好处与在哺乳期怀孕相关的成本增加之间取得平衡。食物剥夺和食物限制足以诱导雌性比对照雌性显着降低性接受度。12 只控制 PPE 雌性中有 11 只交配,12 只食物受限雌性中有 4 只交配,12 只食物剥夺雌性中有 3 只交配。在妊娠后期面临食物匮乏或限制的水坝可能必须在 PPE 期间交配的好处与在哺乳期怀孕相关的成本增加之间取得平衡。
更新日期:2012-11-14
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