布氏田鼠的双亲行为比较

在实验室对布氏田鼠双亲行为和幼仔发育的研究表明, 雌性布氏田鼠的修饰、筑巢和摄食行为显著地多于雄鼠, 且这些差异多集中在幼仔发育的最初9 d 内。雌鼠的修饰、筑巢行为以及在巢内的时间与幼仔发育日龄呈显著地负相关, 而雄鼠的这些行为无显著变化。但雌雄的衔回行为却与幼仔发育日龄呈显著地正相关。据此认为雌性布氏田鼠的双亲行为多于雄鼠, 符合双亲投资的理论。

COMPARISION OF PARENTAL BEHAVIOR IN BRANDT'S VOLES

Parental care and growth and behavioral development of infant on Brandt's voles (M -icrotus brandti) were studied in the laboratory. It were found that compared with male, female spent significantly more time grooming, building and maintaining nest during the 21 days following the parturition, especially the first 9 days. The amount of maternal behavior such as brooding, pup grooming and staying in the nest gradually decreased ( r= - 0.70, P < 0.001; r= - 0.75, P < 0.001; r= - 0.59, P < 0.01, respectively). However, the paternal behavior remained stable form parturition to weaning ( r = - 0.04, P < 0.9851; r = - 0.48, P < 0.0275; r = - 0.35, P < 0.1161, respect ively) , But the amount of retrieving of male and female gradually increased ( r=0.5, P < 0.05; r= 0.5, P < 0.05).