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The Relation of certain Algae to Breeding Places of Mosquitos in Queensland*

Published online by Cambridge University Press:  10 July 2009

Ronald Hamlyn-Harris
Ronald Hamlyn-Harris
Affiliation:
City Entomologist.
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Extract

(1) An effort has been made to find an explanation for certain problems involved in the selection of breeding-places of mosquitos in Queensland.

(2) Many of these problems must remain unsolved until it is possible by patient study of local conditions to bring all the factors involved into play.

(3) In order to explain the reason for the avoidance of natural water, where it exists, it is suggested that the soils that underlie them should first be taken into consideration, and that the waters should be examined with reference to their physical and chemical conditions.

(4) Observations and experiments, spread over a period of eighteen months, confirm the findings of previous authors that Characeae do not in themselves possess larvicidal properties.

(5) That food is the main determining factor in the choice of preferential breeding-places seems to be borne out by actual results obtained, and that when such are not available, mosquitos will resort to breeding-places of compulsion, such places being usually observed to be entirely or partly devoid of food supplies.

(6) It is suggested that the salts of alumina and iron in the ferrous state tend to destroy food organisms, and that where these conditions exist, the water is not selected preferentially.

(7) The presence of algae leads to the appearance of Anopheles annulipes.

(8) That Cladophora holsatica inhibits larval growth seems to be experimentally established.

(9) Bacterial scums are mainly due to B. subtilis and have a tendency to produce a slight alkalinity.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 18 , Issue 4 , May 1928 , pp. 377 - 389
Copyright
Copyright © Cambridge University Press 1928

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References

(1)Barber, M. A.The effect of Chara robbinsii on mosquito larvae.—U.S. Public Health Reports, xxxix, 03 1924. (Reprint No. 910) Washington D.C.Google Scholar
(2)Blow, T. B.Observations on the alleged larvicidal qualities of the Charophyta.—Proc. Linn. Soc. Lond., 1927.Google Scholar
(3)Buhot, E. W. I.Effects on mosquito larvae of a Queensland Nitella.—Proc. Royal Soc. Q'land., xxxviii, no. 6, 09 1926.Google Scholar
(4)Caballero, A.La Chara foetida, A. Br., y las larvas de Stegomyia, Culex y Anopheles.—Bol. R. Soc. Españ. Hist. Nat., Madrid, xix, pp. 449–455, 10 1919.Google Scholar
(5)Carter, H. R.Preferential and compulsory breeding-places of Aëdes (Stegomyia) aegypti and their limits.—Ann. Trop. Med. & Parasit., xviii, no. 4, 12 1924.Google Scholar
(6)Chambers, O. C. The relation of Algae to dissolved oxygen and carbon dioxide.—Twenty-third Report Missouri Botanical Garden, 1912, pp. 171–207.CrossRefGoogle Scholar
(7)Hamlyn-Harris, R.Notes on the breeding-places of two mosquitos in Queensland.—Bull. Ent. Res., xvii, pp. 411–414, 06 1927.CrossRefGoogle Scholar
(8)Harris, F. S.Soil Alkali.—New York 1920. (Chapter 8, on Chemical Equilibrium and Antagonism.)Google ScholarPubMed
(9)Howard, L. O. Mosquito work during 1925.—Proc. 13th Ann. Meeting N. J. Mosquito Exterm. Ass., p. 8, New Brunswick, 1926.Google Scholar
(10)Macgregor, M. E.Tests with Chara foetida and C. hispida on the development of mosquito larvae.—Parasitology, xvi, pp. 382–387, 12 1924.CrossRefGoogle Scholar
(11)Pruthi, H. S.The influence of some physical and chemical conditions of water on May fly larvae.—Bull. Ent. Res., xvii, p. 279.Google Scholar
(12)Pruthi, H. S. The Malaria Commission in Spain.—Brit. Med. Jl., no. 3442, p. 1237, 12 1926.Google Scholar
(13)Pruthi, H. S.Journal Bot., lxii, pp. 252–253, 08 1924.Google Scholar
(14)Pruthi, H. S. Aspects of Mosquito Control Operations.—Health, Melbourne, 01 1927, pp. 24–25.Google Scholar