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Chines Journal of Vector Biology and Control ›› 2009, Vol. 20 ›› Issue (5): 416-418.
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YUAN Zhi-qiang, LI Qing, JIA Hai-Shan, WANG De
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袁志强1,李清2,贾海山2,王德2
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Abstract:
【Abstract】 Objective To indentified the population age of Tscherskia triton scientifically and easily, and to grasp its population age structure so as so increase the prediction level of rodent infestation. Methods The investigations were carried out from early March to early October every year by night trap method during 1994-2006 and 400 clamps were used every time. Some indexes of the captured samples, including body weight, body length, tail length, auricular height and hindfoot length, were measured. The samples were dissected to investigate the reproduction situation. The age of T.triton was identified by mathematical statistics method based on the body weight and its reproductive characteristics. Results A total of 2176 samples captured were divided into five age groups according to the body weight and reproductive characters. They were the young group (Ⅰ, female: less than 35 g. male: less than 33 g), sub?adult group (Ⅱ, female: 35.1-75 g. male: 33.1-79 g), adult groupⅠ(Ⅲ, female: 75.1-121 g. male: 79.1-123 g), adult group Ⅱ(Ⅳ, female: 121.1-185 g. male: 123.1-187 g) and older group (Ⅴ, female: more than 185 g. male: more than 187 g). Conclusion The results showed that it was very convenient to take body weight as the division standard of T.triton. There was a significant difference among five age groups. The weight increased with the increase of population age. The reproductive capacity was significantly different among different age group, which rose with the increase of age. Sub?adult group and adult groupⅠtook absolute advantage in the population structure.
Key words: Tscherskia triton, Population age structure, Body weight, Reproductive capacity
摘要:
【摘要】 目的 帮助基层监测点科学简便地进行大仓鼠种群年龄的划分,掌握大仓鼠种群年龄结构,进一步提高鼠情预测水平。方法 1994-2006年,采用夹线法,每年3-10月的上旬开展调查,每次400夹夜。捕获的样本测量体重、体长、尾长、耳高、后足长,解剖观察繁殖情况。以体重为指标,参照繁殖特征,用数理统计方法对大仓鼠进行年龄划分。结果以体重为指标,将捕获的2176只大仓鼠标本划分为5个年龄组,其体重标准为:幼年组(Ⅰ)雌鼠≤35 g,雄鼠≤33 g;亚成年组(Ⅱ)雌鼠35.1~75 g, 雄鼠33.1~79 g; 成年Ⅰ组(Ⅲ)雌鼠75.1~121 g, 雄鼠79.1~123 g; 成年Ⅱ组(Ⅳ)雌鼠121.1~185 g,雄鼠123.1~187 g;老年组(Ⅴ)雌鼠体重在185 g以上,雄鼠体重在187 g以上。结论 以体重作为大仓鼠年龄的划分标准简便易行,各年龄组体重经检验,差异有统计学意义,体重随种群年龄的增大而增加;不同年龄组之间繁殖力差异明显,随年龄增大而增强,种群结构以亚成年组和成年Ⅰ组占绝对优势。
关键词: 大仓鼠, 种群年龄, 体重, 繁殖力
CLC Number:
S443
YUAN Zhi-qiang, LI Qing, JIA Hai-Shan, WANG De. Study on population age of Tscherskia triton in Shunyi district, Beijing[J]. Chines Journal of Vector Biology and Control, 2009, 20(5): 416-418.
袁志强1,李清2,贾海山2,王德2. 北京市顺义地区大仓鼠种群年龄的研究[J]. 中国媒介生物学及控制杂志, 2009, 20(5): 416-418.
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