Studies on autogeny in Culex tarsalis: 2. Simulated diapause induction and termination in genetically autogenous females.

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Abstract

Exposure to simulated "mid-winter" conditions (16 degrees C, 10L:14D) inhibited the expression of autogeny among the female progeny of field-collected Culex tarsalis females. The same F1 progeny expressed 43% autogeny when reared in an insectary under simulated "summer" conditions (25 degrees C, 16L:8D). Diapausing F1 progeny did not express autogeny after a 42-day simulated winter or after diapause termination periods of 4 days in the insectary or 29 days outdoors during January. Females were then blood fed and the progeny reared in the insectary; autogeny rates among F2 females in 4 families ranged from 0 to 43%. Autogeny rates among females emerging from pupae collected during March at 2 localities in Kern County, California were 15 and 17%. Diapause was not induced uniformly among females from a laboratory-selected autogenous colony. Autogeny rates before and after a simulated winter period did not change significantly.

Original languageEnglish (US)
Pages (from-to)44-47
Number of pages4
JournalJournal of the American Mosquito Control Association
Volume2
Issue number1
StatePublished - Mar 1 1986
Externally publishedYes

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autogeny
Culex tarsalis
Culex
diapause
winter
Pupa
pupa
pupae
blood
summer

ASJC Scopus subject areas

  • Insect Science

Cite this

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title = "Studies on autogeny in Culex tarsalis: 2. Simulated diapause induction and termination in genetically autogenous females.",
abstract = "Exposure to simulated {"}mid-winter{"} conditions (16 degrees C, 10L:14D) inhibited the expression of autogeny among the female progeny of field-collected Culex tarsalis females. The same F1 progeny expressed 43{\%} autogeny when reared in an insectary under simulated {"}summer{"} conditions (25 degrees C, 16L:8D). Diapausing F1 progeny did not express autogeny after a 42-day simulated winter or after diapause termination periods of 4 days in the insectary or 29 days outdoors during January. Females were then blood fed and the progeny reared in the insectary; autogeny rates among F2 females in 4 families ranged from 0 to 43{\%}. Autogeny rates among females emerging from pupae collected during March at 2 localities in Kern County, California were 15 and 17{\%}. Diapause was not induced uniformly among females from a laboratory-selected autogenous colony. Autogeny rates before and after a simulated winter period did not change significantly.",
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N2 - Exposure to simulated "mid-winter" conditions (16 degrees C, 10L:14D) inhibited the expression of autogeny among the female progeny of field-collected Culex tarsalis females. The same F1 progeny expressed 43% autogeny when reared in an insectary under simulated "summer" conditions (25 degrees C, 16L:8D). Diapausing F1 progeny did not express autogeny after a 42-day simulated winter or after diapause termination periods of 4 days in the insectary or 29 days outdoors during January. Females were then blood fed and the progeny reared in the insectary; autogeny rates among F2 females in 4 families ranged from 0 to 43%. Autogeny rates among females emerging from pupae collected during March at 2 localities in Kern County, California were 15 and 17%. Diapause was not induced uniformly among females from a laboratory-selected autogenous colony. Autogeny rates before and after a simulated winter period did not change significantly.

AB - Exposure to simulated "mid-winter" conditions (16 degrees C, 10L:14D) inhibited the expression of autogeny among the female progeny of field-collected Culex tarsalis females. The same F1 progeny expressed 43% autogeny when reared in an insectary under simulated "summer" conditions (25 degrees C, 16L:8D). Diapausing F1 progeny did not express autogeny after a 42-day simulated winter or after diapause termination periods of 4 days in the insectary or 29 days outdoors during January. Females were then blood fed and the progeny reared in the insectary; autogeny rates among F2 females in 4 families ranged from 0 to 43%. Autogeny rates among females emerging from pupae collected during March at 2 localities in Kern County, California were 15 and 17%. Diapause was not induced uniformly among females from a laboratory-selected autogenous colony. Autogeny rates before and after a simulated winter period did not change significantly.

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