Ecdysteroid titer and oocyte growth in the northern house mosquito, Culex pipiens L.

G. D. Baldridge, R. Feyereisen

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

1. 1. In an anautogenous strain of the northern house mosquito, Culex pipiens, the ovaries reached the resting stage (follicle length = 90 μm) three days after adult emergence. 2. 2. Follicle length increased from 90 to 550 μm between 0 and 60 hr after a blood meal. 3. 3. Total ecdysteroids reached a peak at 400 fmol/insect at 36 hr after a blood meal then declined rapidly. 4. 4. The ratio of 20-hydroxyecdysone to ecdysone increased in conjunction with the total cedysteroid level. 5. 5. Oocyte growth beyond the resting stage and initiation of vitellogenesis was dependent on a head factor which was released within 4-8 min of the start of the blood meal.

Original languageEnglish (US)
Pages (from-to)325-329
Number of pages5
JournalComparative Biochemistry and Physiology -- Part A: Physiology
Volume83
Issue number2
DOIs
StatePublished - 1986

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