贵州医科大学学报

1982, (02) 1-16

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致倦库蚊生活史若干问题的探讨
STUDIES ON SOME ASPECTS OF THE LIFE CYCLE OF CULEX (CULEX) PIPIENS FATIGANS WIEDEMANN, 1828

苏晓庆;孟庆华;
Postgraduate of Biology: Su Xiao-- qing Advisor: Prof. Meng C. H.

摘要(Abstract):

<正> 前言致倦库蚊,即尖音库蚊致倦亚种Culex(Culex)pipiens fatigans Wiedemann,1828广布于全世界热带及亚热带,是重要的病原媒介蚊种。但是国内对其生活史研究不多。国外研究虽多,但有些问题不够深入细致。因此,作者于1980年和1981年在实验室内对致倦库蚊生活史各阶段作了较系统的观察。一、材料和方法 1.实验室的条件:实验室的温、湿度及光照度未加人工控制。每天上午九时、下午三时、和晚上九时三次测量温、湿度,以其算术均数作为平均温、湿度。 2.成虫饲养常规:成虫乃化粪池捞回的蚊蛹羽化经鉴定确证为致倦库蚊者。蚊群
Since Culex pipins fatigans is an important vector of some common diseases and since its life history had been studied little in our country, the author made a series of laboratory obsrvations on its development of all the life stages in Guiyang during September to Octoer 1980 and May to September 1981. Results of these observations are summarized as following (1) The incubation period was 35h58'±1h30' during July. (2) The duration of every instar of larvae and pupae was recorded through rearing them individually with the fermented suspensoid of human feces and urine containing total Kjeldahl nitrogen of 75-250mg/L. It was discovered that the duration of the fourth instar was the longest, and then were those of pupae, the first instar, the third instar and the second instar shortened sequentially. The duration difference of aquatic stages between males and females is in the fourth instar. The percentage of pupation of larvae was 92. 0% and the percentage of emergence was 91. 2%. The sex ratio was about 1 : 1. (3) It was revealed through rearing engorged females individually and in batch, that a female adult usually oviposited 1~2 times, and 5 times at most, for life. The number of eggs of eachoviposition varied. The first one was the most numerous and the second one less; the third, the fourth and the fifth were not different statistically and all were less than the first and the second. For the percentages of fertilization and hatching: there was no difference between the first and the fifth, and between the second, the third and the fourth statistically; and the latters were higher than the formers. On an averge, a blood-fed female adult could lay about 380 eggs altogether. (4) Females took the first blood meal on the second or the third day, and were inseminated 4 days, after emergence. males could mate successfully on the next day to the day of emergence. (5) By analysing 121 gonotrophic cycles it was proved that there was a highly significant negative correlation of r=-0.7151 between the duration of gonotrophic cycles and the temperature of 18-29℃. (6) The longevity of adults was observed and analized in detail. Females lived longer than males; un-blood-fed females lived longer than blood-fed ones. The longest longevities of males, blood-fed and un-blood- fed femals were 78, 92 and 84 days; the average longevities were 21.09 ±11.14, 29.53±13.06 and 35.77±17.78 days; and the life expectan- cies were 21.16, 29.42 and 35.75 days respectively. (7) The daily short-photoperiod may induce diapause of female adults. Their larval and pupal stages mere very sensitive to photoperiodicity. The photic intensity threshold in adults was below 80 Lux.

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作者(Author): 苏晓庆;孟庆华;
Postgraduate of Biology: Su Xiao-- qing Advisor: Prof. Meng C. H.

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DOI: 10.19367/j.cnki.1000-2707.1982.02.001

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