摘要
2000年4月至2003年12月,通过固定样地长期监测及样地外标本采集,对洪雅县人工林赤腹松鼠危害与繁殖的关系进行了初步研究,以期为人工林赤腹松鼠危害机理研究和危害控制提供科学依据。研究结果表明,洪雅县赤腹松鼠年均危害率呈上升趋势,但时空变化较大。危害全年都可能发生,但主要发生在3～5月,4月最严重。从赤腹松鼠繁殖情况看,雌鼠主要在3～4月和7～8月繁殖,4月繁殖指数最高;雄鼠基本全年都有睾丸下垂,即处在繁殖期。赤腹松鼠春季的危害高峰期和繁殖高峰期一致,繁殖期赤腹松鼠对食物能量和巢材的需求是产生春季危害高峰的主要原因。
In order to provide scientific foundation to study the reason for damage and control the damage of red-bellied squirrels, the relation of damage and reproductive dynamics of red-bellied squirrels in plantation were studied with conducting long-term monitor in representative plots and collecting and dissecting the bodies of red-bellied squirrels outside plots in Hongya County of Sichuan, from April 2000 to December 2003. The results showed that ： although the average damage rate of plantation increased gradually, changes of damage rate in different time and space were differences. The damage was possible to occur in whole year, but the main damage period was from March to May, and April was the peak of damage. According to the reproductive state, the main reproductive seasons of female red-bellied squirrels were from March to April and July to August, and reproductive index reaches the tiptop in April, while the male red-bellied squirrels, testises were almost in scrotums in the four seasons of year, and in other words, male had reproductive ability in all the year round. Above all, the peak of damage period is consistent with the peak of reproductive period, so the authors consider that the main reasons for damage to plantation in spring are due to red-bellied squirrels requiring a lot of food and materials of nest in the reproductive season.
出处
《四川动物》
CSCD
北大核心
2009年第2期197-201,共5页
Sichuan Journal of Zoology
基金
国家科技部973项目资助,编号2007CB109100
关键词
赤腹松鼠
危害
繁殖
人工林
洪雅县
red-bellied squirrels
damage
reproduction
plantation
Hongya County
