Occurrence and Distribution of Anopheles (Diptera: Culicidae) Larval Habitats on Land Cover Change Sites in Urban Kisumu and Urban Malindi, Kenya

Benjamin G. Jacob, James L. Regens, Charles M. Mbogo, Andrew K. Githeko, Joseph Keating, Christopher M. Swalm, James T. Gunter, John I. Githure, John C Beier

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

A multitemporal, land use land cover (LULC) classification dataset incorporating distributions of mosquito larval habitats was produced in ERDAS Imagine using the combined images from the Multispectral Thermal Imager (MTI) at 5 m spatial resolution from 2001 with Thematic Mapper-classification data at 28.5 m spatial resolution from 1987 and 1989 for Kisumu and Malindi, Kenya. Total LULC change for Kisumu over 14 yr was 30.2%. Total LULC change for Malindi over 12 yr was 30.6%. Of those areas in which change was detected, the LULC change for Kisumu was 72.5% for nonurban to urban, 21.7% urban to nonurban, 0.4% urban to water, 4.5% water to urban, and 0.9% water to nonurban. The proportion of LULC change for Malindi was 93.5% for nonurban to urban, 5.9% urban to nonurban, 0.2% urban to water, 0.3% nonurban to water, and 0.1% water to urban. A grid (270 m x 270 m cells) was overlaid over the maps stratifying grid cells based on drainage and planning. Of 84 aquatic habitats in Kisumu, 32.1% were located in LULC change sites and 67.9% were located in LULC nonchange sites. Of 170 aquatic habitats in Malindi, 26.5% were located in LULC change sites and 73.5% were located in LULC nonchange sites. The most abundant LULC change per strata with anopheline habitats was unplanned and poorly drained. Ditches and puddles in Kisumu and car tracks in Malindi displayed the highest number of anopheline larval habitats for all LULC change sites. The proportion of site positive aquatic habitats for anopheline larvae was higher in LULC change sites than for LULC nonchange sites for Kisumu. This evidence suggests LULC change can influence anopheline larval habitat distribution.

Original languageEnglish
Pages (from-to)777-784
Number of pages8
JournalJournal of Medical Entomology
Volume40
Issue number6
StatePublished - Nov 1 2003

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Anopheles
Kenya
Culicidae
land cover
Diptera
Ecosystem
land use
habitats
Water
aquatic habitat
water
Larva
Drainage
Hot Temperature

Keywords

  • Anopheles gambiae s.l. complex
  • Geographic information systems (GIS)
  • Land use land cover change (LULC)
  • Multispectral thermal imager (MTI)

ASJC Scopus subject areas

  • Insect Science
  • veterinary(all)

Cite this

Occurrence and Distribution of Anopheles (Diptera : Culicidae) Larval Habitats on Land Cover Change Sites in Urban Kisumu and Urban Malindi, Kenya. / Jacob, Benjamin G.; Regens, James L.; Mbogo, Charles M.; Githeko, Andrew K.; Keating, Joseph; Swalm, Christopher M.; Gunter, James T.; Githure, John I.; Beier, John C.

In: Journal of Medical Entomology, Vol. 40, No. 6, 01.11.2003, p. 777-784.

Research output: Contribution to journalArticle

Jacob, BG, Regens, JL, Mbogo, CM, Githeko, AK, Keating, J, Swalm, CM, Gunter, JT, Githure, JI & Beier, JC 2003, 'Occurrence and Distribution of Anopheles (Diptera: Culicidae) Larval Habitats on Land Cover Change Sites in Urban Kisumu and Urban Malindi, Kenya', Journal of Medical Entomology, vol. 40, no. 6, pp. 777-784.
Jacob, Benjamin G. ; Regens, James L. ; Mbogo, Charles M. ; Githeko, Andrew K. ; Keating, Joseph ; Swalm, Christopher M. ; Gunter, James T. ; Githure, John I. ; Beier, John C. / Occurrence and Distribution of Anopheles (Diptera : Culicidae) Larval Habitats on Land Cover Change Sites in Urban Kisumu and Urban Malindi, Kenya. In: Journal of Medical Entomology. 2003 ; Vol. 40, No. 6. pp. 777-784.
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abstract = "A multitemporal, land use land cover (LULC) classification dataset incorporating distributions of mosquito larval habitats was produced in ERDAS Imagine using the combined images from the Multispectral Thermal Imager (MTI) at 5 m spatial resolution from 2001 with Thematic Mapper-classification data at 28.5 m spatial resolution from 1987 and 1989 for Kisumu and Malindi, Kenya. Total LULC change for Kisumu over 14 yr was 30.2{\%}. Total LULC change for Malindi over 12 yr was 30.6{\%}. Of those areas in which change was detected, the LULC change for Kisumu was 72.5{\%} for nonurban to urban, 21.7{\%} urban to nonurban, 0.4{\%} urban to water, 4.5{\%} water to urban, and 0.9{\%} water to nonurban. The proportion of LULC change for Malindi was 93.5{\%} for nonurban to urban, 5.9{\%} urban to nonurban, 0.2{\%} urban to water, 0.3{\%} nonurban to water, and 0.1{\%} water to urban. A grid (270 m x 270 m cells) was overlaid over the maps stratifying grid cells based on drainage and planning. Of 84 aquatic habitats in Kisumu, 32.1{\%} were located in LULC change sites and 67.9{\%} were located in LULC nonchange sites. Of 170 aquatic habitats in Malindi, 26.5{\%} were located in LULC change sites and 73.5{\%} were located in LULC nonchange sites. The most abundant LULC change per strata with anopheline habitats was unplanned and poorly drained. Ditches and puddles in Kisumu and car tracks in Malindi displayed the highest number of anopheline larval habitats for all LULC change sites. The proportion of site positive aquatic habitats for anopheline larvae was higher in LULC change sites than for LULC nonchange sites for Kisumu. This evidence suggests LULC change can influence anopheline larval habitat distribution.",
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