Malhi C S, Kaur K
All India Co-ordinated Research Project on Rodent Control, Department of Zoology, Punjab Agricultural University, Ludhiana - 141 004, India.
Behav Processes. 1995 May;34(1):55-65. doi: 10.1016/0376-6357(94)00052-i.
Food preference behaviour of Funambulus pennanti Wroughton was studied offering four different types of cereals, viz. wheat, millet, maize and rice in three textural forms, viz. whole dry, cracked and whole moist in no-choice, bi-choice and multiple-choice to the experimental squirrels. The mean daily intake of F. pennanti in no-choice has been recorded to be 3.53 to 11.70 g, which, however, increased to 6.31 to 14.19 g and 20.12 to 33.98 g in bi-choice and multiple-choice experiments, respectively. The preference of squirrels in the no-choice feeding experiment was for cracked millet, whole moist wheat and whole dry wheat. In bi-choice feeding experiments, squirrels preferred cracked millet, whole moist millet and whole dry rice. In multiple-choice experiments, the squirrels showed a preference for cracked millet, whole moist and dry wheat and rice. On overall basis, cracked millet was highly preferred by the squirrels. In pen-feeding experiments where the squirrels were offered 12 different foods along with the different plant material including weeds, grasses, twigs of fruit trees, revealed the sustenance in preference of squirrels for cracked millet, whole moist millet, whole moist and dry wheat and whole dry rice in descending order. Squirrels neither formed any nest nor hoarded any food in the experimental pen. Squirrels did not reject any food during choice preference experiments and demonstrated optimal behaviour. Overall, squirrels exhibited a 'Generalist' feeding pattern. The present findings indicate that cracked millet should be used as a poison carrier for control of squirrels while other preferred cereals can also be used as a bait for mixing poison in the subsequent control operations.
对赤腹松鼠的食物偏好行为进行了研究,向实验松鼠提供了四种不同类型的谷物,即小麦、小米、玉米和大米,每种谷物有三种质地形式,即全干、破碎和全湿,分别进行无选择、双选和多选实验。记录到赤腹松鼠在无选择实验中的日均摄入量为3.53至11.70克,然而,在双选和多选实验中,摄入量分别增加到6.31至14.19克和20.12至33.98克。在无选择喂食实验中,松鼠偏好破碎的小米、全湿的小麦和全干的小麦。在双选喂食实验中,松鼠更喜欢破碎的小米、全湿的小米和全干的大米。在多选实验中,松鼠表现出对破碎的小米、全湿和全干的小麦及大米的偏好。总体而言,破碎的小米最受松鼠青睐。在围栏喂食实验中,除了不同的植物材料(包括杂草、草、果树的嫩枝)外,还向松鼠提供了12种不同的食物,结果显示松鼠对食物的偏好顺序为破碎的小米、全湿的小米、全湿和全干的小麦以及全干的大米。松鼠在实验围栏中既没有筑巢也没有储存任何食物。在选择偏好实验中,松鼠没有拒绝任何食物,并表现出最佳行为。总体而言,松鼠表现出“通才”的进食模式。目前的研究结果表明,破碎的小米应作为控制松鼠的毒药载体,而其他受青睐的谷物也可在后续控制行动中用作混合毒药的诱饵。