Physico-chemical characteristics of Anopheles breeding sites: Impact of fecundity and progeny development.

Physico-chemical characteristics of Anopheles breeding sites: Impact of fecundity and progeny development.

Author by Prof. Isaac Oyewole

Journal/Publisher: African Journal Of Environmental Science And Technology

Volume/Edition: 3

Language: English

Pages: 447 - 452

Abstract

Mosquitoes exploit almost all types of aquatic habitats for breeding. Prevailing physicochemical

parameters in these habitats are important factors for survival and development of mosquito. Here, six

water samples from Atlantic Ocean, River, well, distilled (control), rain and borehole water were used to

culture

Anopheline

eggs collected from pure bred of Kisimu species. The development of eggs to 1

st

,

2

nd

, 3

rd

and 4

th

instars larval, pupal and adult stages were observed from day 1 to 6 using six replicates

of each water sample. The number of eggs laid (fecundity) by the emerged adults were estimated using

counting microscope. Level of development in emerged adults was determined using the wing size. The

analysis of the physicochemical parameters of the water samples was carried out in the Nigerian

Institute of Marine and Oceanography. The physicochemical characteristics were compared with the

rates of development and fecundity of the Anopheline species. Statistical analysis using ANOVA

indicates no significant difference (P > 0.05) in the hatchability of the eggs. However, the rates of larval

development to pupal stage and subsequent adult emergence showed a level of significant difference

(P < 0> 0.05). This

study provides information on mosquito ecology in relation to breeding habitat which may have bearing

on vector population and distribution as well as malaria transmission in a particular area.


Other Co-Authors