A critical assessment of the detailed Aedes aegypti simulation model Skeeter Buster 2 using field experiments of indoor insecticidal control in Iquitos, Peru DOI Creative Commons
Christian E. Gunning, Amy C. Morrison, Kenichi W. Okamoto

и другие.

PLoS neglected tropical diseases, Год журнала: 2022, Номер 16(12), С. e0010863 - e0010863

Опубликована: Дек. 22, 2022

The importance of mosquitoes in human pathogen transmission has motivated major research efforts into mosquito biology pursuit more effective vector control measures. Aedes aegypti is a particular concern tropical urban areas, where it the primary numerous flaviviruses, including yellow fever, Zika, and dengue viruses. With an anthropophilic habit, Ae. prefers houses, blood meals, ovipositioning water-filled containers. We hypothesized that this relatively simple ecological niche should allow us to predict impacts insecticidal measures on populations. To do this, we use Skeeter Buster 2 (SB2), stochastic, spatially explicit, mechanistic model population biology. SB2 builds Buster, which reproduced equilibrium dynamics Iquitos, Peru. Our goal was validate by predicting response populations perturbations indoor spraying widespread destructive insect surveys. evaluate SB2, conducted two field experiments Peru: smaller pilot study 2013 (S-2013) followed larger experiment 2014 (L-2014). Here, compare predictions with (previously reported) empirical results from these experiments. In both simulated populations, repeated yielded substantial yet temporary reductions adult densities. proportional effects were broadly comparable between results, but found noteworthy differences. particular, consistently over-estimated proportion nulliparous females containers holding immature mosquitoes. also observed less temporal variation surveys abundance relative corresponding observations. indicate presence heterogeneities or sampling processes not effectively represented SB2. Although additional could further improve accuracy precision our underscore non-linear perturbations, suggest general limits fine-grained predictability its over space time.

Язык: Английский

Initial rearing, release, and establishment of biological control agent Pseudophilothrips ichini to control Brazilian peppertree (Schinus terebinthifolia) in South Texas ecosystem restoration projects DOI Open Access
Megann Harlow, Nathan E. Harms, Aaron N. Schad

и другие.

Опубликована: Июнь 18, 2024

Control of the invasive Brazilian peppertree (Schinus terebinthifolia) is a major cost component US Army Corps Engineers (USACE) ecosystem restoration (ER) projects in South Texas, specifically USACE Galveston district (SWG) Resacas at Brownsville, ER Project. Biological control has been developed as sustainable tool to lower long-term weed management costs. Although biological program for S. terebinthifolia operation Florida since 2019, no similar existed Texas until initiated by Engineer Research and Development Center (ERDC) 2020. Since 2021, agent Pseudophilothrips ichini reared ERDC. This technical report details rearing, release, establishment efforts from fall 2020 spring 2023 provide project locations. Initial observations on impact potential limitations hot climates such those are also discussed.

Язык: Английский

Процитировано

0
Juvenile responses to immune challenges are not carried through to subsequent life stages in an insect DOI Creative Commons
Farley William Souza Silva,

Daniel L. Viol,

Simon L. Elliot

и другие.

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Сен. 13, 2024

Environmental variability can significantly impact individual survival and reproduction. Meanwhile, high population densities lead to resource scarcity increased exposure parasites pathogens. Studies with insects offer valuable insights into eco-immunology, allowing us explore the connections between these variables. Here we use moth Anticarsia gemmatalis examine how increases in density immunological challenge during larval stage shape its investment immune defence Larvae reared at a exhibited greater lytic activity against bacteria compared those low density, whilst bacterial (i.e. bacteria-immersed needles) also activity. There was no interaction variables challenge, indicating that are independent. Surprisingly, neither increase carried through prepupal haemolymph. Rearing of larvae delayed pupation decreased pupal weight. The stimulus did not influence development. Lower as larva resulted adult weight, but eggs or number laid. Negative correlations were found eggs, well weight eggs. Overall, this study demonstrates trigger caterpillars, effect is transient, persisting later stages. trade-offs observed, such reduced weights under suggest balancing act developmental aspects. findings hint short-term adaptive response rather than sustained strategy. implications smaller moths could moth's life history strategy, impacting role ecosystem. Further research tracking subsequent reproductive success will unveil evolutionary dynamics relationship changing environments.

Язык: Английский

Процитировано

0
Effects of Rearing Density on Developmental Traits of Two Different Biotypes of the Gypsy Moth, Lymantria Dispar L., from China and the USA DOI Creative Commons
Yiming Wang, Robert L. Harrison, Juan Shi

и другие.

Insects, Год журнала: 2021, Номер 12(2), С. 175 - 175

Опубликована: Фев. 17, 2021

The life-history traits of the gypsy moth, Lymantria dispar L. (Lepidoptera: Erebidae), have been observed to vary with larval population density, which can increase significantly during an outbreak this pest. Laboratory studies on density-dependent variation in moth development focused single populations and were limited comparing solitary larvae groups reared at a density. To evaluate how impacts different subspecies dispar, we compared effects rearing European (L. L.) from Connecticut, USA; two Asian asiatica Vnukovskij) Guizhou Hebei provinces China. Larvae artificial diet densities one, three, five, seven, nine per 115 mL container, duration development, percentage surviving larvae, rates pupation emergence measured each A two-tailed response density values falling away both sides peak or climbing base was for all three tested, most rapid highest survival, pupation, five larvae/container. Although differences time, among under conditions our study, findings indicate that follow same trends.

Язык: Английский

Процитировано

3
The order of adult emergence from a bean influences Callosobruchus maculatus biological parameters DOI
Azam Amiri, Ali R. Bandani

Journal of Stored Products Research, Год журнала: 2022, Номер 98, С. 101989 - 101989

Опубликована: Июнь 2, 2022

Язык: Английский

Процитировано

2
A critical assessment of the detailed Aedes aegypti simulation model Skeeter Buster 2 using field experiments of indoor insecticidal control in Iquitos, Peru DOI Creative Commons
Christian E. Gunning, Amy C. Morrison, Kenichi W. Okamoto

и другие.

PLoS neglected tropical diseases, Год журнала: 2022, Номер 16(12), С. e0010863 - e0010863

Опубликована: Дек. 22, 2022

The importance of mosquitoes in human pathogen transmission has motivated major research efforts into mosquito biology pursuit more effective vector control measures. Aedes aegypti is a particular concern tropical urban areas, where it the primary numerous flaviviruses, including yellow fever, Zika, and dengue viruses. With an anthropophilic habit, Ae. prefers houses, blood meals, ovipositioning water-filled containers. We hypothesized that this relatively simple ecological niche should allow us to predict impacts insecticidal measures on populations. To do this, we use Skeeter Buster 2 (SB2), stochastic, spatially explicit, mechanistic model population biology. SB2 builds Buster, which reproduced equilibrium dynamics Iquitos, Peru. Our goal was validate by predicting response populations perturbations indoor spraying widespread destructive insect surveys. evaluate SB2, conducted two field experiments Peru: smaller pilot study 2013 (S-2013) followed larger experiment 2014 (L-2014). Here, compare predictions with (previously reported) empirical results from these experiments. In both simulated populations, repeated yielded substantial yet temporary reductions adult densities. proportional effects were broadly comparable between results, but found noteworthy differences. particular, consistently over-estimated proportion nulliparous females containers holding immature mosquitoes. also observed less temporal variation surveys abundance relative corresponding observations. indicate presence heterogeneities or sampling processes not effectively represented SB2. Although additional could further improve accuracy precision our underscore non-linear perturbations, suggest general limits fine-grained predictability its over space time.

Язык: Английский

Процитировано

2