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Landscape Effects on the Presence, Abundance and Diversity of Mosquitoes in Mediterranean Wetlands

Environment determines the distribution of mosquito-borne diseases in that it influences the vector-host-pathogen transmission cycle, including vector distribution, abundance and diversity. In this study, we analyse the relationship between environmental variables estimated by remote sensing and the...

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Autores principales: Roiz, David, Ruiz, Santiago, Soriguer, Ramon, Figuerola, Jordi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4472724/
https://www.ncbi.nlm.nih.gov/pubmed/26086804
http://dx.doi.org/10.1371/journal.pone.0128112
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author Roiz, David
Ruiz, Santiago
Soriguer, Ramon
Figuerola, Jordi
author_facet Roiz, David
Ruiz, Santiago
Soriguer, Ramon
Figuerola, Jordi
author_sort Roiz, David
collection PubMed
description Environment determines the distribution of mosquito-borne diseases in that it influences the vector-host-pathogen transmission cycle, including vector distribution, abundance and diversity. In this study, we analyse the relationship between environmental variables estimated by remote sensing and the spatial distribution (presence, abundance and diversity) of seven mosquito species vectors of West Nile and other pathogens (Usutu, avian malaria and dirofilariasis) in the Doñana Natural Park, Spain. Traps were distributed over an area of 54,984 ha divided into six ecological units: marshland, sand dunes, scrubland, ricefields, crops and fishponds. We collected mosquitoes once a month from up to 112 locations using BG-Sentinel traps baited with BG-lure and CO(2) during March-November 2010. Hydroperiod, NDVI and Inundation surface were estimated at several resolution scales (100, 250, 500, 1000 and 2000 metres) from corrected and normalized Landsat Images. We sampled 972,346 female mosquitoes, the most abundant species being Culex theileri, Ochlerotatus caspius, Culex modestus, Culex perexiguus, Culex pipiens, Anopheles atroparvus and Ochlerotatus detritus. Our results suggest that: (1) hydroperiod, inundation surface and NDVI are strongly related to the spatial distribution of mosquitoes; (2) the spatial scales used to measure these variables affected quantification of these relationships, the larger scale being more informative; (3) these relationships are species-specific; (4) hydroperiod is negatively related to mosquito presence and richness; (5) Culex abundance is positively related to hydroperiod; (6) NDVI is positively related to mosquito diversity, presence and abundance, except in the case of the two salt marsh species (Oc. caspius and Oc. detritus); and (7) inundation surfaces positively condition the abundance and richness of most species except the salt marsh mosquitoes. Remote sensing data provided reliable information for monitoring mosquito populations. Landscape significantly affected mosquito distribution and abundance, and as a result may alter disease risk. These results suggest that while environmental conditions affect the distribution and abundance of mosquitoes, other factors such as human modification of landscapes may give rise to significant changes in mosquito populations and consequently disease risk.
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spelling pubmed-44727242015-06-29 Landscape Effects on the Presence, Abundance and Diversity of Mosquitoes in Mediterranean Wetlands Roiz, David Ruiz, Santiago Soriguer, Ramon Figuerola, Jordi PLoS One Research Article Environment determines the distribution of mosquito-borne diseases in that it influences the vector-host-pathogen transmission cycle, including vector distribution, abundance and diversity. In this study, we analyse the relationship between environmental variables estimated by remote sensing and the spatial distribution (presence, abundance and diversity) of seven mosquito species vectors of West Nile and other pathogens (Usutu, avian malaria and dirofilariasis) in the Doñana Natural Park, Spain. Traps were distributed over an area of 54,984 ha divided into six ecological units: marshland, sand dunes, scrubland, ricefields, crops and fishponds. We collected mosquitoes once a month from up to 112 locations using BG-Sentinel traps baited with BG-lure and CO(2) during March-November 2010. Hydroperiod, NDVI and Inundation surface were estimated at several resolution scales (100, 250, 500, 1000 and 2000 metres) from corrected and normalized Landsat Images. We sampled 972,346 female mosquitoes, the most abundant species being Culex theileri, Ochlerotatus caspius, Culex modestus, Culex perexiguus, Culex pipiens, Anopheles atroparvus and Ochlerotatus detritus. Our results suggest that: (1) hydroperiod, inundation surface and NDVI are strongly related to the spatial distribution of mosquitoes; (2) the spatial scales used to measure these variables affected quantification of these relationships, the larger scale being more informative; (3) these relationships are species-specific; (4) hydroperiod is negatively related to mosquito presence and richness; (5) Culex abundance is positively related to hydroperiod; (6) NDVI is positively related to mosquito diversity, presence and abundance, except in the case of the two salt marsh species (Oc. caspius and Oc. detritus); and (7) inundation surfaces positively condition the abundance and richness of most species except the salt marsh mosquitoes. Remote sensing data provided reliable information for monitoring mosquito populations. Landscape significantly affected mosquito distribution and abundance, and as a result may alter disease risk. These results suggest that while environmental conditions affect the distribution and abundance of mosquitoes, other factors such as human modification of landscapes may give rise to significant changes in mosquito populations and consequently disease risk. Public Library of Science 2015-06-18 /pmc/articles/PMC4472724/ /pubmed/26086804 http://dx.doi.org/10.1371/journal.pone.0128112 Text en © 2015 Roiz et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Roiz, David
Ruiz, Santiago
Soriguer, Ramon
Figuerola, Jordi
Landscape Effects on the Presence, Abundance and Diversity of Mosquitoes in Mediterranean Wetlands
title Landscape Effects on the Presence, Abundance and Diversity of Mosquitoes in Mediterranean Wetlands
title_full Landscape Effects on the Presence, Abundance and Diversity of Mosquitoes in Mediterranean Wetlands
title_fullStr Landscape Effects on the Presence, Abundance and Diversity of Mosquitoes in Mediterranean Wetlands
title_full_unstemmed Landscape Effects on the Presence, Abundance and Diversity of Mosquitoes in Mediterranean Wetlands
title_short Landscape Effects on the Presence, Abundance and Diversity of Mosquitoes in Mediterranean Wetlands
title_sort landscape effects on the presence, abundance and diversity of mosquitoes in mediterranean wetlands
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4472724/
https://www.ncbi.nlm.nih.gov/pubmed/26086804
http://dx.doi.org/10.1371/journal.pone.0128112
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