Gaillard J -M, Pontier D, Brandt S, Jullien J-M, Allainé D
Department of Zoology and Physiology, University of Wyoming, P.O. Box 3166, 82071, Laramie, WY, USA.
URA CNRS 243, Laboratoire de Biométrie, UCB Lyon 1, 43, Bd du 11 novembre 1918, 69622, Villeurbanne cédex, France.
Oecologia. 1992 May;90(2):167-171. doi: 10.1007/BF00317173.
In wild boar individual growth rate is linear between 0.5 and 6 months after birth, based on successive body weight measurements. Contrary to expectation for a dimorphic and polygynous mammal like wild boar, no sexual dimorphism in growth rate could be detected between 0.5 and 6 months. We argue that high total maternal invesment in offspring due to large litter size and/or strong selection for early reproduction in this population with a short generation time could explain this absence of early differentiation in postnatal growth rate according to offspring sex.
基于连续的体重测量，野猪个体在出生后0.5至6个月之间的生长速率呈线性。与对野猪这种两性异形且一夫多妻制哺乳动物的预期相反，在0.5至6个月之间未检测到生长速率的两性差异。我们认为，由于产仔数多导致母体对后代的总投资高，和/或在这个世代时间短的种群中对早期繁殖的强烈选择，可能解释了根据后代性别在出生后生长速率上缺乏早期分化的现象。
