EFFECT OF REARING TEMPERATURE AND LARVAL DENSITY ON LARVAL SURVIVAL, AGE AT PUPATION AND ADULT SIZE OF ANOPHELES-GAMBIAE
EFFECT OF REARING TEMPERATURE AND LARVAL DENSITY ON LARVAL SURVIVAL, AGE AT PUPATION AND ADULT SIZE OF ANOPHELES-GAMBIAE
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DOI：
10.1007/bf00192775
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发表时间：
1992-06-01
影响因子：
1.9
通讯作者：
KOELLA, JC
中科院分区：
文献类型：
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作者：
LYIMO, EO;TAKKEN, W;KOELLA, JC
研究了温度和幼虫密度对实验室饲养的冈比亚按蚊（Anopheles gambiae）幼虫存活率、生长速率、化蛹年龄和成虫大小（以翅长和干重计）的影响。幼虫饲养在三个温度（24，27和30摄氏度）和三个密度（0.5，1和2幼虫/平方厘米）。密度和温度的影响强烈相互作用，以确定蚊子的生活史参数。在27 ℃的中间温度下，存活率最高。温度之间的差异随着密度的增加而增加。在30摄氏度，随着密度的增加，存活率下降，但在27摄氏度，密度增加导致更高的存活率。化蛹年龄随着温度从30摄氏度降低到24摄氏度和密度从2个幼虫/平方厘米降低到0.5个幼虫/平方厘米而增加。成虫的大小也随着温度的降低而增加，但仅在27 ℃时与密度呈负相关。相比之下，在24 ℃和30 ℃下，密度的降低导致成虫尺寸的减小。增长率显示出类似的模式。在27 ℃时，生长速率随着密度的增加而下降，但在其他温度下观察到相反的趋势。
The effects of temperature and larval density on survival of larvae, growth rate, age at pupation, and adult size (measured as wing length and dry weight) of laboratory-reared Anopheles gambiae (Diptera: Culicidae) were studied. Larvae were reared at three temperatures (24, 27 and 30-degrees-C) and three densities (0.5, 1 and 2 larvae/cm2). The effects of density and temperature strongly interacted to determine the mosquitoes' life-history parameters. Survival was highest at the intermediate temperature of 27-degrees-C. The differences between the temperatures increased with increasing density. At 30-degrees-C survival decreased as density increased, but at 27-degrees-C increasing density led to higher survival. Age at pupation increased as temperature decreased from 30-degrees-C to 24-degrees-C and as density decreased from 2 to 0.5 larvae/cm2. Adult size also increased as temperature decreased, but showed a negative correlation with density only at 27-degrees-C. In contrast, at 24-degrees-C and 30-degrees-C a decrease in density led to a decrease in adult size. Growth rate showed a similar pattern. At 27-degrees-C growth rate decreased as density increased, but at other temperatures the opposite trend was observed.