Intraspecific hybridization of Anopheles minimus (Diptera: Culicidae) species A and C in Thailand.
Southeast Asian J Trop Med Public Health
;
2002 ; 33 Suppl 3(): 23-8
Article
in English
| IMSEAR
| ID: sea-30659
ABSTRACT
Hybridization tests of laboratory-raised, isolines of Anopheles minimus, species A and C were conducted by induced copulation. The three isolines were established based on three morphological variants of wild-caught, fully engorged females and two distinct types of metaphase chromosomes. They were An. minimus species A V form (X1,Y1), M form (X2,Y1); species C P form (X3,Y2). The results of reciprocal and back crosses indicated that the two morphologically variant forms of species A were genetically compatible, providing viable progeny and completely synaptic salivary gland polytene chromosomes, whereas they were genetically incompatible with species C and/or the P form. Hybrid progeny was only obtained from both forms of species A females x species C males, but asynaptic salivary gland polytene chromosomes on 3L and partial development of ovarian follicles in females were seen. Back crosses of F1 hybrid males with parental species A females provided viable progeny, while back crosses of F1 hybrid females with parental species C males provided progeny of low viability and adult males with abnormal spermatozoa, suggesting the partial reproductive isolation of An. minimus species A and C.
Full text:
Available
Index:
IMSEAR (South-East Asia)
Main subject:
Species Specificity
/
Thailand
/
Female
/
Male
/
Hybridization, Genetic
/
Karyotyping
/
Animals
/
Anopheles
Country/Region as subject:
Asia
Language:
English
Journal:
Southeast Asian J Trop Med Public Health
Year:
2002
Type:
Article
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