Abstract
IN a paper on the biology of Culex fatigans Wied. in the Belgian Congo, Drs. Wanson and Nicolay1 state that “ at Banana the larval cycle is accomplished normally in concentrations of up to 30 grams of chloride per litre”. Taking this figure as representing the total chlorides present, the salinity, (S°/°°), expressed as total weight of salts in grams per 1000 gm. of sea water, would be in the vicinity of 33.5. Hamlyn-Harris2 states that in Queensland this mosquito rarely breeds in brackish water. No other references to Culex fatigans Wied. breeding in saline waters have been found, and it is generally regarded as a typical freshwater mosquito.
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References
Wanson et Nicolay, Ann. Soc. Belge Med. Trop., 17, No. 1, 111 (March 1937).
Hamlyn-Harris, R., Proc. Roy. Soc. Queensland, 40, No. 8, 91 (Nov. 1928).
Woodhill, A. R., Bull. Ent. Res., 27, No. 4, 633 (Dec. 1936).
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WOODHILL, A. Salinity Tolerance and pH Range of Culex fatigans. Nature 141, 920 (1938). https://doi.org/10.1038/141920a0
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DOI: https://doi.org/10.1038/141920a0
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