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On the Gonotrophic Dissociation in Culex tritaeniorhynchus summorosus Females under Various Conditions


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Title: On the Gonotrophic Dissociation in Culex tritaeniorhynchus summorosus Females under Various Conditions
Other Titles: 種々の条件下でのコガタアカイエカの栄養生殖分離
Authors: Oda, Tsutomu / Wada, Yoshito
Authors (alternative): 小田, 力 / 和田, 義人
Issue Date: 30-Dec-1973
Publisher: 長崎大学熱帯医学研究所 / Institute of Tropical Medicine, Nagasaki University
Citation: 熱帯医学 Tropical medicine 15(4). p189-195, 1973
Abstract: In order to understand the ecological significance for the gonotrophic dissociation in Culex tritaeniorhynchus summorosus females, the development of follicles, the activity of blood feeding and the incidence of gonotrophic dissociation were examined with the females which had been reared as adults under the outdoor natural or indoor experimental conditions and with those which had been caught at cowsheds. From the results obtained, it was indicated that under the conditions of the short day-length the gonotrophic dissociation occurs commonly, however the feeding rate is very low and accordingly the number itself of the females showing this phenomenon is very small. Therefore, it can be said that the gonotrcphic dissociation in this species does not play the important role on the overwintering ecology. / コガタアカイエカの栄養生殖分離の果す生態学的意義を明らかにするために,夏から秋にかけて屋外の自然条件下で飼育羽化させた雌及び種々の日長と温度とを組み合せた実験条件下で飼育羽化させた雌について,濾胞の発育状態,吸血率及び栄養生殖分離率を調査し,更に春から秋にかけて牛舎で採集した吸血雌についても栄養生殖分離率を調べた.これらの調査結果から,本種雌の栄養生殖分種は短日条件下で普通に起こるが,吸血率が顕著に低いため,本現象を示す雌の数は極めて少ないことがわかった.したがって,本種の栄養生殖分離が越冬生態の上に重要な役割を果すとは思われない.
URI: http://hdl.handle.net/10069/4148
ISSN: 03855643
Type: Departmental Bulletin Paper
Appears in Collections:Volume 15, No. 4

Citable URI : http://hdl.handle.net/10069/4148

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