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Observations on the Anopheles gambiae complex in the Senegal River Basin, West Africa
Author(s) -
PETRARCA V.,
VERCRUYSSE J.,
COLUZZI M.
Publication year - 1987
Publication title -
medical and veterinary entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.028
H-Index - 82
eISSN - 1365-2915
pISSN - 0269-283X
DOI - 10.1111/j.1365-2915.1987.tb00359.x
Subject(s) - biology , anopheles gambiae , structural basin , ecology , anopheles , malaria , paleontology , immunology
. 1. Three sibling species of mosquitoes of the Anopheles gambiae complex are found in the Senegal River Basin: An.melas Theobald, An.gambiae Giles and An.arabiensis Patton. 2. An.melas is restricted to the river delta and environs where saltwater breeding places are present. 3. An.gambiae and An.arabiensis are sympatric in the study area; An.arabiensis predominates in coastal zones where it breeds also during the dry season; An.gambiae predominates in inland areas where breeding is mostly restricted to the rainy season (July‐September). 4. An.arabiensis is chromosomally polymorphic all over the study area, with much variation of inversion frequencies, particularly for the 2Ra arrangement. 5. An.gambiae is characterized by a very high frequency of the 2R6‐2La inversion arrangement which is typical of the Savanna chromosomal form.