Effects of sampling design on the estimation of adult mosquito abundance

William Reisen, Hugh D. Lothrop

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

During 1994-5, Culex tarsalis comprised 75% of the 902.643 adult female mosquitoes collected by 63 dry-ice-baited Centers for Disease Control (CDC)-style traps operated biweekly in a uniform sampling grid that covered the southern Coachella Valley, Riverside County, California. The ln(y + 1) transformation successfully controlled the variance and normalized the distribution of catch size among trap nights. When tested by analysis of variance, abundance varied significantly among months, years, and trap sites. Although the trap by month interaction was not significant, female distribution changed seasonally as larval habitats shifted from wetlands along the Salton Sea to agriculture to managed duck marshes. Conditional simulations utilized subsets of trap sites to compare sampling designs that required no (uniform, random, and transect designs) or prior (best-estimate and stratified random designs) knowledge of mosquito spatial distribution. All designs provided similar information on population seasonal trends, but a stratified random design provided the most accurate and precise simulation. A uniform trap grid that employed every 2nd trap site subsequently was adopted by the Coachella Valley Mosquito and Vector Control District to provide information on focal changes in abundance indicative of missed or newly created larval habitats or control failures.

Original languageEnglish (US)
Pages (from-to)105-114
Number of pages10
JournalJournal of the American Mosquito Control Association
Volume15
Issue number2
StatePublished - Jun 1 1999

Fingerprint

Wetlands
Culicidae
mosquito
Ecosystem
traps
Dry Ice
Mosquito Control
Culex
Ducks
sampling
Centers for Disease Control and Prevention (U.S.)
Agriculture
Oceans and Seas
Analysis of Variance
valley
disease control
Population
valleys
habitat
variance analysis

Keywords

  • Conditional simulations
  • Culex tarsalis
  • Geographical information systems
  • Sampling designs
  • Statistical distributions

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Public Health, Environmental and Occupational Health
  • Insect Science

Cite this

Effects of sampling design on the estimation of adult mosquito abundance. / Reisen, William; Lothrop, Hugh D.

In: Journal of the American Mosquito Control Association, Vol. 15, No. 2, 01.06.1999, p. 105-114.

Research output: Contribution to journalArticle

@article{5b8aa0b116f64e8d9049ca477fabf849,
title = "Effects of sampling design on the estimation of adult mosquito abundance",
abstract = "During 1994-5, Culex tarsalis comprised 75{\%} of the 902.643 adult female mosquitoes collected by 63 dry-ice-baited Centers for Disease Control (CDC)-style traps operated biweekly in a uniform sampling grid that covered the southern Coachella Valley, Riverside County, California. The ln(y + 1) transformation successfully controlled the variance and normalized the distribution of catch size among trap nights. When tested by analysis of variance, abundance varied significantly among months, years, and trap sites. Although the trap by month interaction was not significant, female distribution changed seasonally as larval habitats shifted from wetlands along the Salton Sea to agriculture to managed duck marshes. Conditional simulations utilized subsets of trap sites to compare sampling designs that required no (uniform, random, and transect designs) or prior (best-estimate and stratified random designs) knowledge of mosquito spatial distribution. All designs provided similar information on population seasonal trends, but a stratified random design provided the most accurate and precise simulation. A uniform trap grid that employed every 2nd trap site subsequently was adopted by the Coachella Valley Mosquito and Vector Control District to provide information on focal changes in abundance indicative of missed or newly created larval habitats or control failures.",
keywords = "Conditional simulations, Culex tarsalis, Geographical information systems, Sampling designs, Statistical distributions",
author = "William Reisen and Lothrop, {Hugh D.}",
year = "1999",
month = "6",
day = "1",
language = "English (US)",
volume = "15",
pages = "105--114",
journal = "Journal of the American Mosquito Control Association",
issn = "8756-971X",
publisher = "American Mosquito Control Association",
number = "2",

}

TY - JOUR

T1 - Effects of sampling design on the estimation of adult mosquito abundance

AU - Reisen, William

AU - Lothrop, Hugh D.

PY - 1999/6/1

Y1 - 1999/6/1

N2 - During 1994-5, Culex tarsalis comprised 75% of the 902.643 adult female mosquitoes collected by 63 dry-ice-baited Centers for Disease Control (CDC)-style traps operated biweekly in a uniform sampling grid that covered the southern Coachella Valley, Riverside County, California. The ln(y + 1) transformation successfully controlled the variance and normalized the distribution of catch size among trap nights. When tested by analysis of variance, abundance varied significantly among months, years, and trap sites. Although the trap by month interaction was not significant, female distribution changed seasonally as larval habitats shifted from wetlands along the Salton Sea to agriculture to managed duck marshes. Conditional simulations utilized subsets of trap sites to compare sampling designs that required no (uniform, random, and transect designs) or prior (best-estimate and stratified random designs) knowledge of mosquito spatial distribution. All designs provided similar information on population seasonal trends, but a stratified random design provided the most accurate and precise simulation. A uniform trap grid that employed every 2nd trap site subsequently was adopted by the Coachella Valley Mosquito and Vector Control District to provide information on focal changes in abundance indicative of missed or newly created larval habitats or control failures.

AB - During 1994-5, Culex tarsalis comprised 75% of the 902.643 adult female mosquitoes collected by 63 dry-ice-baited Centers for Disease Control (CDC)-style traps operated biweekly in a uniform sampling grid that covered the southern Coachella Valley, Riverside County, California. The ln(y + 1) transformation successfully controlled the variance and normalized the distribution of catch size among trap nights. When tested by analysis of variance, abundance varied significantly among months, years, and trap sites. Although the trap by month interaction was not significant, female distribution changed seasonally as larval habitats shifted from wetlands along the Salton Sea to agriculture to managed duck marshes. Conditional simulations utilized subsets of trap sites to compare sampling designs that required no (uniform, random, and transect designs) or prior (best-estimate and stratified random designs) knowledge of mosquito spatial distribution. All designs provided similar information on population seasonal trends, but a stratified random design provided the most accurate and precise simulation. A uniform trap grid that employed every 2nd trap site subsequently was adopted by the Coachella Valley Mosquito and Vector Control District to provide information on focal changes in abundance indicative of missed or newly created larval habitats or control failures.

KW - Conditional simulations

KW - Culex tarsalis

KW - Geographical information systems

KW - Sampling designs

KW - Statistical distributions

UR - http://www.scopus.com/inward/record.url?scp=0033147040&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033147040&partnerID=8YFLogxK

M3 - Article

C2 - 10412106

AN - SCOPUS:0033147040

VL - 15

SP - 105

EP - 114

JO - Journal of the American Mosquito Control Association

JF - Journal of the American Mosquito Control Association

SN - 8756-971X

IS - 2

ER -