SELECTION FOR INCREASED SEXUAL ISOLATION BETWEEN GEOGRAPHIC FORMS OF DROSOPHILA MOJAVENSIS (SPECIATION, BEHAVIOR).
Item
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Title
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SELECTION FOR INCREASED SEXUAL ISOLATION BETWEEN GEOGRAPHIC FORMS OF DROSOPHILA MOJAVENSIS (SPECIATION, BEHAVIOR).
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Identifier
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AAI8501148
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identifier
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8501148
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Creator
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KOEPFER, HELEN ROBERTA.
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Contributor
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Marvin Wasserman
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Date
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1984
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Language
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English
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Publisher
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City University of New York.
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Subject
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Biology, General
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Abstract
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The aims of this study were to select for increased sexual isolation between peninsular and Sonoran forms of D. mojavensis baja, and to ascertain the effects of that selection on three types of interactions: (1) interactions between the geographic forms under selection; (2) interactions between the selected flies and unselected Sonoran D. arizonensis and Californian D. mojavensis; (3) interactions occurring within the selected peninsular and Sonoran forms, i.e., between males and females of the same form.;Extent of isolation was measured by the male choice method, and results of the study included four main findings: (1) There was an increase in isolation between selected peninsular males and Sonoran females which was primarily due to the altered behavior of the peninsular males; (2) Peninsular females and Sonoran males showed no increase in isolation; (3) Selected peninsular males were also more isolated from Californian mojavensis females than were control line peninsular males. (4) Homogamic interactions between selected peninsular males and females and between selected Sonoran males and females differed according to the origin of the heterogamic female with whom they were tested.
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
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Program
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Biology
