Comparative studies of three populations of the lady beetle predator Hippodamia convergens (Coleoptera: Coccinellidae)

John J. Obrycki; Elliot S. Krafsur; Carlos E. Bogran; Luis E. Gomez; Ronald E. Cave

doi:10.2307/3496663

Comparative studies of three populations of the lady beetle predator Hippodamia convergens (Coleoptera: Coccinellidae)

John J. Obrycki, Elliot S. Krafsur, Carlos E. Bogran, Luis E. Gomez, Ronald E. Cave

Entomology

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Allozyme electrophoresis showed much genetic variation in Hippodamia convergens, suggesting the possibility of geographic genetic differentiation. Twenty-two of 31 putative allozyme loci resolved on acrylamide gels from H. convergens populations were polymorphic (71%). Heterozygosity (diversity) averaged over all loci was 21.3 ± 4.2%. However, thirteen polymorphic loci examined in F1 Honduran x Iowa hybrids indicated that all alleles were shared in the two populations. In addition, no significant geographic variation was observed in developmental and reproductive responses of H. convergens from Iowa, California, and Honduras to aphid prey densities. All inter-population and backcrosses produced fertile eggs. Adult body size of H. convergens from Iowa and Honduras was similar. This study indicates that augmentatively released California H. convergens could successfully mate with local H. convergens populations in Iowa and Honduras.

Original language	English
Pages (from-to)	55-62
Number of pages	8
Journal	Florida Entomologist
Volume	84
Issue number	1
DOIs	https://doi.org/10.2307/3496663
State	Published - 2001

Keywords

Allozymes
Augmentation
Biological control
Convergent ladybeetle
Gene diversity

ASJC Scopus subject areas

Ecology, Evolution, Behavior and Systematics
Insect Science

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10.2307/3496663

Cite this

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title = "Comparative studies of three populations of the lady beetle predator Hippodamia convergens (Coleoptera: Coccinellidae)",

abstract = "Allozyme electrophoresis showed much genetic variation in Hippodamia convergens, suggesting the possibility of geographic genetic differentiation. Twenty-two of 31 putative allozyme loci resolved on acrylamide gels from H. convergens populations were polymorphic (71%). Heterozygosity (diversity) averaged over all loci was 21.3 ± 4.2%. However, thirteen polymorphic loci examined in F1 Honduran x Iowa hybrids indicated that all alleles were shared in the two populations. In addition, no significant geographic variation was observed in developmental and reproductive responses of H. convergens from Iowa, California, and Honduras to aphid prey densities. All inter-population and backcrosses produced fertile eggs. Adult body size of H. convergens from Iowa and Honduras was similar. This study indicates that augmentatively released California H. convergens could successfully mate with local H. convergens populations in Iowa and Honduras.",

keywords = "Allozymes, Augmentation, Biological control, Convergent ladybeetle, Gene diversity",

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AU - Krafsur, Elliot S.

AU - Bogran, Carlos E.

AU - Gomez, Luis E.

AU - Cave, Ronald E.

PY - 2001

Y1 - 2001

N2 - Allozyme electrophoresis showed much genetic variation in Hippodamia convergens, suggesting the possibility of geographic genetic differentiation. Twenty-two of 31 putative allozyme loci resolved on acrylamide gels from H. convergens populations were polymorphic (71%). Heterozygosity (diversity) averaged over all loci was 21.3 ± 4.2%. However, thirteen polymorphic loci examined in F1 Honduran x Iowa hybrids indicated that all alleles were shared in the two populations. In addition, no significant geographic variation was observed in developmental and reproductive responses of H. convergens from Iowa, California, and Honduras to aphid prey densities. All inter-population and backcrosses produced fertile eggs. Adult body size of H. convergens from Iowa and Honduras was similar. This study indicates that augmentatively released California H. convergens could successfully mate with local H. convergens populations in Iowa and Honduras.

AB - Allozyme electrophoresis showed much genetic variation in Hippodamia convergens, suggesting the possibility of geographic genetic differentiation. Twenty-two of 31 putative allozyme loci resolved on acrylamide gels from H. convergens populations were polymorphic (71%). Heterozygosity (diversity) averaged over all loci was 21.3 ± 4.2%. However, thirteen polymorphic loci examined in F1 Honduran x Iowa hybrids indicated that all alleles were shared in the two populations. In addition, no significant geographic variation was observed in developmental and reproductive responses of H. convergens from Iowa, California, and Honduras to aphid prey densities. All inter-population and backcrosses produced fertile eggs. Adult body size of H. convergens from Iowa and Honduras was similar. This study indicates that augmentatively released California H. convergens could successfully mate with local H. convergens populations in Iowa and Honduras.

KW - Allozymes

KW - Augmentation

KW - Biological control

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KW - Gene diversity

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Comparative studies of three populations of the lady beetle predator Hippodamia convergens (Coleoptera: Coccinellidae)

Abstract

Keywords

ASJC Scopus subject areas

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