Distribution of mosquito fauna in Minicoy - Lakshadweep islands, India

Abstract

The aim of the study was to know breeding sources, distribution dynamics, species diversity and entomological indices of mosquito fauna to predict risk of vector borne disease (VBDs) transmission. Immature sampling sites were selected randomly. Houses were inspected for the presence of larval infestation, Immature were collected by dipping and pipetting method. Predominant breeding sources at Minicoy were found to be coconut shells, discarded plastic containers, open wells, discarded drainage tank, flower pot and earthen pot. Four vector and one non-vector species were collected during monsoon season such as Aedes (Aedes) alopictus (53.23%), Aedes (Aedes) aegypti (39.75%), Anopheles (Cellia) stephensi (1.75%), Culex (Culex) quinquefasciatus (5.25%) and Armigeres (Armigeres) subalbatus. Entomological indices such as House Index (HI), Container Index (CI), Breateu Index (BI) and Pupal Index (PI) showed high values such as 25.26, 4.8, 36.02 and 90.86 respectively during monsoon season. As a result of high level of BI risk of disease transmission is high in Minicoy Island. The entomological indices for Dengue vectors are high, hence stringent vector control measures needs to be implemented at Minicoy Island.