Document Detail


Crossing experiments supporting the specific status of Anopheles maculatus chromosomal form K.
MedLine Citation:
PMID:  18666525     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
There are 3 recognized chromosomal forms (B, E, K) in the taxon of Anopheles maculatus, 1 of the 8 members of the Anopheles maculatus group. Previous studies suggested that forms B and E are cytotypes of the species, but genetic characteristics of form K are unknown. The present study used crossing experiments, and polytene chromosomes of the ovarian nurse cell in F1 hybrids to show that form K is genetically distinct from forms B and E. In addition, postzygotic genetic incompatibility between form K and An. sawadwongporni, An. dravidicus, and An. pseudowillmori are demonstrated. In all crosses, hybrid males were sterile, with atrophied testes and accessory glands, or partially sterile with abnormal spermatozoa. The hybrid females showed varying degrees of atrophied ovaries. The ovarian nurse cell polytene chromosomes of the F1 hybrid females displayed approximately 70% to almost complete asynapsis. The results provide clear evidence that form K should no longer be regarded as a cytotype of An. maculatus. The present study supports previous suggestions that form K represents another species of the Maculatus group.
Authors:
Damrongpan Thongwat; Katy Morgan; Samantha M O'Loughlin; Catherine Walton; Wej Choochote; Pradya Somboon
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of the American Mosquito Control Association     Volume:  24     ISSN:  8756-971X     ISO Abbreviation:  J. Am. Mosq. Control Assoc.     Publication Date:  2008 Jun 
Date Detail:
Created Date:  2008-07-31     Completed Date:  2008-09-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8511299     Medline TA:  J Am Mosq Control Assoc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  194-202     Citation Subset:  IM    
Affiliation:
Department of Parasitology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
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MeSH Terms
Descriptor/Qualifier:
Animals
Anopheles / genetics*
Chromosomes*
Crosses, Genetic
Female
Hybridization, Genetic
Male

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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