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種々の条件下でのオオクロヤブカの濾胞の発育と生殖活性


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Title: 種々の条件下でのオオクロヤブカの濾胞の発育と生殖活性
Other Titles: Follicular Development and Gonoactivity in Armigeres subalbatus Females under Various Conditons
Authors: 小田, 力 / 和田, 義人 / 森, 章夫
Authors (alternative): Oda, Tsutomu / Wada, Yoshito / Mori, Akio
Issue Date: 28-Feb-1976
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 17(4). p181-186, 1976
Abstract: 春から秋にかけての自然条件下で飼育羽化させたオオクロヤブカの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,さら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.またドライアイストラップで採集した未吸血雌の経産率の季節的変化を検討した.その結果次のことがわかった.本種の雌では濾胞の大きさと発育期は春から秋にかけて変化しないし,実験環境条件の低温短日下でも変らない.しかし吸血活動は低温下で抑えられる.栄養生殖分離はどの条件下でも一般に起らないようである.一方経産率は秋になると高くなった.以上の結果を総合して考えると,秋の短日条件下で羽化する本種の雌は,アカイエカやコガタアカイエカにみられるような休眠現象を示さず,吸血と産卵を繰り返して翌春までに死滅するものと思われる. / With Armigeres subalbatus, follicular size and stage, the activity of blood feeding and incidence of gonotrophic dissociation were examined with females which had been reared as adults under the outdoor natural or indoor experimental conditions and with those which had been caught at cowsheds. Also, parous rate was investigated with unfed females caught by a dry ice trap. From the results obtained, it was found that the follicular development does not vary from spring to autumn, and is not influenced by short day-length and low temperature, however, feeding activty is inhibited by low temperature. The gonotrophic dissociation was seldom observed under those conditions. The parous rate increased in autumn. Therefore, it is assumed that most of the females which emerged under short day-length in autumn do not show the diapause state represented by the small sized follicles asseen in Culex pipiens and will die by next spring by repeating the feeding activity and egg-laying.
URI: http://hdl.handle.net/10069/4191
ISSN: 03855643
Type: Departmental Bulletin Paper
Appears in Collections:Volume 17, No. 4

Citable URI : http://hdl.handle.net/10069/4191

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