PDF(Pubmed)
Abstract：
UNASSIGNED: Reduction of the Aedes aegypti population is the priority effort to control dengue virus transmission including the use of larvivorous fish. Biologically, the predatory efficiency of fish will slow down when the water acidity and temperature change from normal conditions. This study aimed to determine the predatory efficiency of three species of larvivorous fish against the Ae. aegypti larvae in different water temperatures.
UNASSIGNED: Three well-known species of larvivorous fish namely Poecilia reticulata, Betta splendens, and Aplocheilus panchax were placed into 12 cm diameter jars with three water temperature ranges namely 20-21 °C, 27-28 °C, and 34-35 °C, and allowed to three days acclimatization. As many as one hundred 4th-instars larvae of Ae. aegypti were gradually entered into each jar, and a longitudinal observation was made at 5, 10, 30, 60, 120, 240, 360, 480, 600, and 720 minutes. The predated larvae were recorded.
UNASSIGNED: In normal temperature ranges, the predatory efficiency of the larvivorous fish was 75%, 72.3%, and 32.8% for B. splendens. Aplocheilus panchax, and P. reticulata, respectively. The predation abilities decreased due to temperature changes. Betta splendens and A. panchax indicated the best predatory efficiency against Ae. aegypti larvae in different temperature conditions.
UNASSIGNED: Betta splendens is the best larvivorous fish in the lower to normal, but A. panchax is the best in the normal to higher temperature ranges. This finding should be considered by public health workers in selecting larvivorous fish to control the Dengue vectors.
UNASSIGNED: Three well-known species of larvivorous fish namely Poecilia reticulata, Betta splendens, and Aplocheilus panchax were placed into 12 cm diameter jars with three water temperature ranges namely 20-21 °C, 27-28 °C, and 34-35 °C, and allowed to three days acclimatization. As many as one hundred 4th-instars larvae of Ae. aegypti were gradually entered into each jar, and a longitudinal observation was made at 5, 10, 30, 60, 120, 240, 360, 480, 600, and 720 minutes. The predated larvae were recorded.
UNASSIGNED: In normal temperature ranges, the predatory efficiency of the larvivorous fish was 75%, 72.3%, and 32.8% for B. splendens. Aplocheilus panchax, and P. reticulata, respectively. The predation abilities decreased due to temperature changes. Betta splendens and A. panchax indicated the best predatory efficiency against Ae. aegypti larvae in different temperature conditions.
UNASSIGNED: Betta splendens is the best larvivorous fish in the lower to normal, but A. panchax is the best in the normal to higher temperature ranges. This finding should be considered by public health workers in selecting larvivorous fish to control the Dengue vectors.
摘要：
■减少埃及伊蚊种群是控制登革热病毒传播的优先工作，包括使用幼虫鱼。生物学,当水的酸度和温度从正常状态变化时，鱼的捕食效率会减慢。本研究旨在确定三种幼虫鱼对Ae的捕食效率。埃及伊蚊幼虫在不同的水温。
■三种著名的幼食鱼，即网纹Poecilia，斗鱼华丽，将Aplocheiluspanchax放入直径为12厘米的罐子中，水温范围为20-21°C，27-28°C,和34-35°C，并允许三天适应环境。多达一百只4龄幼虫。埃及伊蚊逐渐进入每个罐子，在5、10、30、60、120、240、360、480、600和720分钟进行纵向观察。记录了早熟的幼虫。
■在正常温度范围内，幼虫鱼的捕食效率为75%，72.3%,B.splendens和32.8%。Aplocheiluspanchax,和网状P,分别。由于温度变化，捕食能力下降。Bettasplendens和A.panchax对Ae的捕食效率最佳。不同温度条件下的埃及伊蚊幼虫。
■斗鱼是低到正常的最好的幼鱼，但是A.panchax在正常到较高温度范围内是最好的。公共卫生工作者在选择幼虫鱼以控制登革热媒介时应考虑这一发现。
■三种著名的幼食鱼，即网纹Poecilia，斗鱼华丽，将Aplocheiluspanchax放入直径为12厘米的罐子中，水温范围为20-21°C，27-28°C,和34-35°C，并允许三天适应环境。多达一百只4龄幼虫。埃及伊蚊逐渐进入每个罐子，在5、10、30、60、120、240、360、480、600和720分钟进行纵向观察。记录了早熟的幼虫。
■在正常温度范围内，幼虫鱼的捕食效率为75%，72.3%,B.splendens和32.8%。Aplocheiluspanchax,和网状P,分别。由于温度变化，捕食能力下降。Bettasplendens和A.panchax对Ae的捕食效率最佳。不同温度条件下的埃及伊蚊幼虫。
■斗鱼是低到正常的最好的幼鱼，但是A.panchax在正常到较高温度范围内是最好的。公共卫生工作者在选择幼虫鱼以控制登革热媒介时应考虑这一发现。
