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Journal articles on the topic 'Control of larvae'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

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1

Chen, Shicheng, Michael G. Kaufman, Michelle L. Korir, and Edward D. Walker. "Ingestibility, Digestibility, and Engineered Biological Control Potential of Flavobacteriumhibernum, Isolated from Larval Mosquito Habitats." Applied and Environmental Microbiology 80, no. 3 (2013): 1150–58. http://dx.doi.org/10.1128/aem.03319-13.

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ABSTRACTFlavobacteriumhibernum, isolated from larval habitats of the eastern tree hole mosquito,A. triseriatus, remained suspended in the larval feeding zone much longer (8 days) than other bacteria. Autofluorescent protein markers were developed for the labeling ofF. hibernumwith a strong flavobacterial expression system. Green fluorescent protein (GFP)-taggedF. hibernumcells were quickly consumed by larval mosquitoes at an ingestion rate of 9.5 × 104/larva/h. The ingestedF. hibernumcells were observed mostly in the foregut and midgut and rarely in the hindgut, suggesting that cells were dige

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Nazaire Aïzoun. "Anopheles gambiae s. l. larval control: An important method for malaria control." World Journal of Biology Pharmacy and Health Sciences 6, no. 3 (2021): 027–34. http://dx.doi.org/10.30574/wjbphs.2021.6.3.0043.

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The current study aimed to investigate on the control tools against larvae and adults of Anopheles gambiae s. l. and then explore the detoxification enzymes mechanisms conferring permethrin tolerance in Anopheles gambiae s. l. larvae in Benin. Larvae and pupae were collected from March to July and August to November 2018 during the rainy season in Bopa district in Mono department in south-western Benin, West Africa. Larval bioassays were performed on these collected Anopheles gambiae s. l. larvae using permethrin as larvicide and synergist piperonyl butoxide (PBO) as enzyme inhibitor or synerg

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Tyrrell, Jordan J., Jackson T. Wilbourne, Alisa A. Omelchenko, Jin Yoon, and Lina Ni. "Ionotropic Receptor-dependent cool cells control the transition of temperature preference in Drosophila larvae." PLOS Genetics 17, no. 4 (2021): e1009499. http://dx.doi.org/10.1371/journal.pgen.1009499.

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Temperature sensation guides animals to avoid temperature extremes and to seek their optimal temperatures. The larval stage of Drosophila development has a dramatic effect on temperature preference. While early-stage Drosophila larvae pursue a warm temperature, late-stage larvae seek a significantly lower temperature. Previous studies suggest that this transition depends on multiple rhodopsins at the late larval stage. Here, we show that early-stage larvae, in which dorsal organ cool cells (DOCCs) are functionally blocked, exhibit similar cool preference to that of wild type late-stage larvae.

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Taira, K., V. Šnábel, N. Okada, and Y. Saitoh. "Effect of low temperatures on the infectivity of Toxocara cati larvae parasitized in mouse tissues." Helminthologia 50, no. 2 (2013): 83–86. http://dx.doi.org/10.2478/s11687-013-0112-8.

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AbstractThe infectivity of Toxocara cati larvae in mouse tissues, following storage at 4 °C and −25 °C, was measured using a bioassay in mice. Tissues of donor mice infected with 30-day-old T. cati larvae were stored at 4 °C for 7 and 14 days, and at −25 °C for 24 hours, then tissue larvae were inoculated into recipient mice (n = 6/group). After 15 days, larval burden in recipient mice was assessed by digestion. In the control group, a mean of 42.0 % of the inoculated larvae were established in mice. Storage of tissues at 4 °C for 7 and 14 days did not affect larval infectivity; means of 43.5

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Hansen, J. D., M. A. Watkins, M. L. Heidt, and P. A. Anderson. "Cold Storage to Control Codling Moth Larvae in Fresh Apples." HortTechnology 17, no. 2 (2007): 195–98. http://dx.doi.org/10.21273/horttech.17.2.195.

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Codling moth [Cydia pomonella (Lepidoptera: Tortricidae)], found in exported apples (Malus sylvestris), can disrupt international markets. Cold storage at 1.1 °C was examined for possible control of three physiological larval states in ‘Fuji’ apples: diapausing (overwintering), diapause-destined, and nondiapausing. All nondiapausing larvae were dead within 12 weeks, diapaused-destined larvae were controlled by the seventh week, yet more than half of the original populations of diapausing larvae were still alive after 11 weeks. Because the diapaused-destined larvae were younger than the nondiap

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Khatun, Mousumi, Mohammad Mahir Uddin, Md Azizul Haque, and Mohammad Saidur Rhaman. "Feeding, growth and chemical control of hog-plum beetle (Podontia 14- punctata)." Research in Agriculture Livestock and Fisheries 3, no. 3 (2016): 387–94. http://dx.doi.org/10.3329/ralf.v3i3.30729.

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Experiments were conducted to study the feeding, growth and chemical control of hog-plum beetle (Podontia 14-punctata) in the laboratory and in the field. It was found that larval leaf consumption gradually increased with the increase of age of larva. Mean leaf consumption per larva was 0.28g, 0.86g and 1.70g after 24, 72 and 144 hrs, respectively. Growth pattern of larva was depended on the rate of leaf consumption. The average body weight of larvae was increased with time and per larva was recorded as 0.06g, 0.19g and 0.45g after 24, 72 and 144 hrs of leaf consumption. Daily leaf consumption

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Dantas, José Oliveira, Talita Guimarães Araújo-Piovezan, Danielle Pereira Santos, Agripino Emanuel Oliveira Alves, Sarita Socorro Campos Pinheiro, and Genésio Tâmara Ribeiro. "Extracts of Potential Plants in the Control of the Aedes aegypti Population." Ensaios e Ciência: Ciências Biológicas, Agrárias e da Saúde 23, no. 2 (2019): 104. http://dx.doi.org/10.17921/1415-6938.2019v23n2p104-108.

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Abstract The dengue fever is a febrile illness transmitted by mosquitoes Aedes aegypti to humans. The control of dengue dissemination is a hard challenge since the human population is presenting a considerably increase. Brazilian plants are known to control mosquitoes larvae due to their insecticides properties. This work had the objective to evaluate the success of plants extracts on the Aedes aegypti population. It was hypothesized that the studied plant extracts influence the population size of Aedes aegypti. It was hoped that at least one of these extracts is 100% efficient on the mosquito

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Makkiah, Makkiah, Cristina L. Salaki, and Berty Assa. "Efektivitas Ekstrak Serai Wangi (Cimbopogon nardus L.) sebagai Larvasida Nyamuk Aedes aegypti (The Effectiveness of Citronella Extract (Cymbopogon nardus) as Larvaside of Aedes aegypti)." JURNAL BIOS LOGOS 10, no. 1 (2019): 1. http://dx.doi.org/10.35799/jbl.10.1.2020.26920.

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Efektivitas Ekstrak Serai Wangi (Cimbopogon nardus L.) sebagai Larvasida Nyamuk Aedes aegypti (The Effectiveness of Citronella Extract (Cymbopogon nardus) as Larvaside of Aedes aegypti) Makkiah*), Cristina L Salaki **), Berty AssaProgram Studi Entomologi Pascasarjana Universitas Sam RatulangiManado, 95155*Email: khiaimoet@gmail.com,**Email korespondensi: christinasalaki@ymail.com (Article History: Received 20-10-2019; Revised 27-11-2019; Accepted 30-12-2019) Abstrak Pengendalian nyamuk sebagai vektor utama penularan penyakit DBD hanya dapat dilakukkan dengan cara memutuskan rantai penularannya

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Duan, Jian J., Leah S. Bauer, Roy Van Driesche, et al. "Effects of Extreme Low Winter Temperatures on the Overwintering Survival of the Introduced Larval Parasitoids Spathius galinae and Tetrastichus planipennisi: Implications for Biological Control of Emerald Ash Borer in North America." Journal of Economic Entomology 113, no. 3 (2020): 1145–51. http://dx.doi.org/10.1093/jee/toaa048.

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Abstract Climate change has been linked to shifts in the distribution and phenology of species although little is known about the potential effects that extreme low winter temperatures may have on insect host–parasitoid interactions. In late January 2019, northern regions of the United States experienced a severe cold wave caused by a weakened jet stream, destabilizing the Arctic polar vortex. Approximately 3 mo later at six study sites in southern Michigan and three in southern Connecticut, we sampled the overwintering larvae of the emerald ash borer, Agrilus planipennis Fairmaire (Coleoptera

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Pronier, I., J. Paré, J.-C. Wissocq, and C. Vincent. "Nucleopolyhedrovirus infection in obliquebanded leafroller (Lepidoptera: Tortricidae)." Canadian Entomologist 134, no. 3 (2002): 303–9. http://dx.doi.org/10.4039/ent134303-3.

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AbstractA virus isolated from obliquebanded leafroller, Choristoneura rosaceana (Harris), larvae collected in an apple, Malus domestica Borkh. (Rosaceae), orchard of Saint-Joseph-du-Lac (Quebec, Canada) was studied. Microscopic studies revealed that it was a uninucleocapsid nucleopolyhedrovirus from the family Baculoviridae. Larval mortality was approximately 75% (0% mortality in control group) in larvae infected as third instars immersed in a suspension of 1.7 × 108 occlusion bodies/mL. The average time for larval mortality was 23 ± 3 d after treatment. The majority (95.5%) of infected larvae

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Ediriweera, ERHSS. "Evaluation of Anthelmintic properties of Sesbania grandiflora Pers. (Kathurumurunga) against larvae of Toxocara canis and Haemonchus contortus – In Vitro Study." Healer 2, no. 1 (2021): 42–47. http://dx.doi.org/10.51649/healer.15.

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Sesbania grandiflora is a slender tree. It is a common garden plant in Sri Lanka, which grows well in mid and low country. In Sri Lanka, Sesbania grandiflora is used as a home remedy, in treatment of worm infections in humans. Toxocara canis is a helminth parasite infecting dogs and other canids. It also causes toxocariasis in humans. Haemonchus contortus is a nematode that infects goats and causes anaemia, marked reduction in growth and reproduction, and even death. Using this information, in vitro larvae migratory inhibition assay was carried out on Toxocara canis and Haemonchus contortus la

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Makkiah, Makkiah, Christina L. Salaki, and Berty Assa. "Efektivitas Ekstrak Serai Wangi (Cimbopogon nardus L.) sebagai Larvasida Nyamuk Aedes aegypti." JURNAL BIOS LOGOS 10, no. 1 (2019): 1. http://dx.doi.org/10.35799/jbl.10.1.2020.27977.

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Efektivitas Ekstrak Serai Wangi (Cimbopogon nardus L.) sebagai Larvasida Nyamuk Aedes aegypti (The Effectiveness of Citronella Extract (Cymbopogon nardus) as Larvaside of Aedes aegypti) Makkiah*), Christina L Salaki **), Berty AssaProgram Studi Entomologi Pascasarjana Universitas Sam RatulangiManado, 95155*Email: khiaimoet@gmail.com,**Email korespondensi: christinasalaki@ymail.com (Article History: Received 20-10-2019; Revised 27-11-2019; Accepted 30-12-2019) AbstrakPengendalian nyamuk sebagai vektor utama penularan penyakit DBD hanya dapat dilakukan dengan cara memutuskan rantai penularannya

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Lettmann, Jessica, Karsten Mody, Tore-Aliocha Kursch-Metz, Nico Blüthgen, and Katja Wehner. "Bracon wasps for ecological pest control–a laboratory experiment." PeerJ 9 (May 27, 2021): e11540. http://dx.doi.org/10.7717/peerj.11540.

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Biological control of pest insects by natural enemies may be an effective, cheap and environmentally friendly alternative to synthetic pesticides. The cosmopolitan parasitoid wasp species Bracon brevicornis Wesmael and B. hebetor Say (Hymenoptera: Braconidae) use lepidopteran species as hosts, including insect pests like Ephestia kuehniella or Ostrinia nubilalis. Here, we compare the reproductive success of both Bracon species on E. kuehniella in a laboratory experiment. We asked (1) how the reproductive success on a single host larva changes with temperature, (2) how it changes with temperatu

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Pramanik, Soujita, Sampa Banerjee, Soumyajit Banerjee, Goutam K. Saha, and Gautam Aditya. "Observations on the predatory potential of Lutzia fuscana on Aedes aegypti larvae: implications for biological control (Diptera: Culicidae)." Fragmenta Entomologica 48, no. 2 (2016): 137. http://dx.doi.org/10.4081/fe.2016.176.

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Among the natural predators, larval stages of the mosquito <em>Lutzia fuscana (</em>Wiedemann, 1820) (Diptera: Culicidae) bear potential as a biological control agent of mosquitoes. An estimation of the predatory potential of the larva of <em>L. fuscana</em> against the larva of the dengue vector <em>Aedes aegypti</em> (Linnaeus, 1762) (Diptera: Culicidae) was made to highlight its use in vector management. Laboratory experiments revealed that the larva of<em> L</em>. <em>fuscana</em> consumes 19 to 24 <em>A. aegypti</em>

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Santos Silva-Filho, Edivaldo, Talita Guimarães Araújo-Piovezan, José Oliveira Dantas, Maria de Jesus Silvestre, Agripino Emanuel de Oliveira Alves, and Genésio Tâmara Ribeiro. "Controle de Larvas de Aedes aegypti por Ninfas de libélula (Odonata) sob Condições Laboratoriais." Ensaios e Ciência C Biológicas Agrárias e da Saúde 25, no. 2 (2021): 239–42. http://dx.doi.org/10.17921/1415-6938.2021v25n2p239-242.

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Estudos para o combate ao vetor Aedes aegypti são importantes para reduzir as incidências da Dengue, Zika e Chikungunya, responsáveis por milhares de mortes no Mundo. Este estudo hipotetiza que as ninfas de odonata influenciam no controle de larvas de Aedes aegypti com eficácia diferente entre as famílias, por terem distinta morfologia de aparelho mastigador e comportamento. O objetivo com esta pesquisa foi avaliar a eficiência de sete famílias de odonata como predadoras de Aedes aegypti, em condições laboratoriais. Ninfas foram coletadas com armadilha de rede, no Rio Poxim Açu e individualiza

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Blodgett, Sue L., Andrew W. Lenssen, and S. Dennis Cash. "Harvest with Raking for Control of Alfalfa Weevil (Coleoptera: Curculionidae)." Journal of Entomological Science 35, no. 2 (2000): 129–35. http://dx.doi.org/10.18474/0749-8004-35.2.129.

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Successful implementation of early harvest techniques for alfalfa weevil larval, Hypera postica Gyllenhal, management depends on synchronization between alfalfa growth sufficient for harvest and economic populations of the insect, conditions that frequently occur in Montana. Field trials were conducted in 1996 and 1997 to determine if the addition of raking to timed harvest would improve the efficacy of alfalfa weevil larvae management, an important cultural control of alfalfa weevil larval populations. Post-baling mean number of alfalfa weevil larvae in stubble were 4.3 (SE = 1.6) and 7.5 (SE

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Pepperný, K. "Influence of baculovirus AdorGV on the mortality of larvae and pupae of summer fruit tortrix Adoxophyes orana in laboratory conditions." Plant Protection Science 43, No. 3 (2008): 94–102. http://dx.doi.org/10.17221/2245-pps.

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The mortality of larvae and pupae of <i>Adoxophyes orana</i> was examined by keeping larvae of each larval instar (L1–L5) on an artificial diet in laboratory conditions. Larvae were infected by using an artificial diet containing AdorGV-based CAPEX® 2. Samples of uninfected larvae from each instar served as controls. The mortality of larvae infected in the 1<sup>st</sup> instar was 100%, compared to a mortality of 68% in the control. In both, the larvae died before the 5<sup>th</sup> larval instar. With larvae infected in subsequent instars the mortality rat

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Panigrahi, Bivas, and Chia-Yuan Chen. "Microfluidic Transportation Control of Larval Zebrafish through Optomotor Regulations under a Pressure-Driven Flow." Micromachines 10, no. 12 (2019): 880. http://dx.doi.org/10.3390/mi10120880.

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To perform zebrafish larvae-related experiments within a microfluidic environment, the larvae need to be anesthetized and subsequently transported into respective test sections through mechanical or manual means. However, anesthetization tends to affect larval sensory perceptions, hindering their natural behaviors. Taking into account that juvenile larvae move naturally within their environment by accessing visual as well as hydromechanical cues, this work proposes an experimental framework to transport nonanesthetized larvae within a microfluidic environment by harmonically tuning both of the

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Hidayati, Lisa, and Seli Suprihatini. "Pengaruh Pemberian Ekstrak Biji Mahoni (Swietenia mahagoni) Terhadap Kematian Larva Culex sp." ASPIRATOR - Journal of Vector-borne Disease Studies 12, no. 1 (2020): 45–52. http://dx.doi.org/10.22435/asp.v12i1.2171.

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Abstract. Mahogany seed extract (Swietenia mahagoni) is a natural larvacidal material which contains limonoid, flavonoid, saponins and alkoloid. Mahogany seed extract can kill Culex sp larvae, which known as filariasis vectors. There are several mosquitoes control are used to pressing Culex sp larvae growth, such as using larvacidal and fogging but have bad impact on the circumtances The study observed effect of mahogany seed extract on Culex sp. larvae mortality. This study utilized an experimental method with ANOVA and probit analysis to determined LC50 and LT50. Extraction method were used

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Cranshaw, Whitney, and Thomas B. Eckberg. "Comparison of two Neem Insecticides for Fall Webworm Control, Laboratory Bioassay 1992." Arthropod Management Tests 20, no. 1 (1995): 328. http://dx.doi.org/10.1093/amt/20.1.328.

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Abstract Field collected late instar fall webworm larvae were divided into groups of ten and placed in petri dishes. Six groups (60 larvae) were used in each treatment. Chokecherry foliage was treated by dipping in the various solutions tested and allowing to air dry. On August 6, the larvae were fed the treated foliage for the first 3 days, and subsequently fed untreated foliage for the duration of the experiment. Larval mortality was assessed on August 10 (4 DAT), August 13 (7 DAT), and August 17 (11 DAT).

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Chamberlin, M. E. "Control of oxidative phosphorylation during insect metamorphosis." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 287, no. 2 (2004): R314—R321. http://dx.doi.org/10.1152/ajpregu.00144.2004.

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The midgut of the tobacco hornworm ( Manduca sexta) is a highly aerobic tissue that is destroyed and replaced by a pupal epithelium at metamorphosis. To determine how oxidative phosphorylation is altered during the programmed death of the larval cells, top-down control analysis was performed on mitochondria isolated from the midguts of larvae before and after the commitment to pupation. Oxygen consumption and protonmotive force (measured as membrane potential in the presence of nigericin) were monitored to determine the kinetic responses of the substrate oxidation system, proton leak, and phos

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Chil-Núñez, Idelsy, Paloma Martins Mendonça, Julio C. Escalona-Arranz, Carlos M. Dutok-Sánchez, Frenkel Guisado Bourzac, and Margareth M. de Carvalho Queiroz. "Larvicide and insecticide activity of the essential oil of Ocimum sanctum var. cubensis in the control of Musca domestica (Linnaeus, 1758), under laboratory conditions." Revista Amazonia Investiga 9, no. 34 (2020): 24–33. http://dx.doi.org/10.34069/ai/2020.34.10.3.

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Essential oils have been considered as an important alternative facing synthetic pesticides. The control of the species Musca domestica is very important for public health due to their role as vector associated with Vibrio cholerae, Salmonella and Shigella, among other pathogens. The objective of this work was to evaluate the larvicidal and insecticidal efficacy of the essential oil of Ocimum sanctum var. cubensis, in the control of Musca domestica and its effect on the post-embryonic development of this species. The essential oil was applied topically in six concentrations to newly hatched la

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Pellegrini, María C., Lucía Zalazar, Sandra R. Fuselli, and Alejandra G. Ponce. "Inhibitory action of essential oils against proteases activity of Paenibacillus larvae, the etiological agent of American Foulbrood disease." Spanish Journal of Agricultural Research 15, no. 4 (2018): e0504. http://dx.doi.org/10.5424/sjar/2017154-10785.

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American foulbrood (AFB) is a disease affecting the larva of Apis mellifera. The etiological agent is Paenibacillus larvae, which releases metalloproteases involved in the degradation of larval tissues. Through quorum sensing (QS) mechanism, bacteria are able to activate specific genes such as virulence factors. The exoproteases regulation of P. larvae could be associated with QS. A promising mechanism of AFB control is to block QS mechanism with essential oils (EO). The aim of this study was to investigate the potential presence of QS signals in the regulation of P. larvae proteases and the e

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Prabowo, Heri, and I. G. A. A. Indrayani. "Keefektifan Nematoda Patogen Serangga Steinernema sp. Terhadap Achaea janata L., Serangga Pemakan Daun Jarak Kepyar (Ricinus communis)." Buletin Tanaman Tembakau, Serat & Minyak Industri 5, no. 2 (2016): 58. http://dx.doi.org/10.21082/bultas.v5n2.2013.58-68.

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<p>Penggunaan pestisida kimia yang cukup tinggi pada akhir-akhir ini telah menimbulkan dampak negatif ter-hadap lingkungan, sehingga pengendalian hama yang ramah lingkungan sangat diperlukan. Saat ini, peng-gunaan nematoda entomopatogen terutama Steinernema sp., membuka peluang untuk digunakan sebagai pengendalian Achaea janata. Tujuan dari penelitian ini untuk mengetahui keefektifan Steinernema sp. ter-hadap A. Janata , dilaksanakan di laboratorium patologi serangga Balai Penelitan Tanaman Pemanis dan Serat pada bulan Maret sampai dengan Agustus 2011. Penelitian menggunakan rancanagan a

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Saunders, L. M., D. M. Tompkins, and P. J. Hudson. "The dynamics of nematode transmission in the red grouse (Lagopus lagopus scoticus) : studies on the recovery of Trichostrongylus tenuis larvae from vegetation." Journal of Helminthology 73, no. 2 (1999): 171–75. http://dx.doi.org/10.1017/s0022149x99000268.

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Attempts to recover the infective third-stage larvae of Trichostrongylus tenuis from heather (Calluna vulgaris) vegetation in the field are rarely successful because the larvae may be: (i) concealed within heather leaflets; (ii) concentrated in dew droplets which are lost from the plants upon sampling; or (iii) simply highly aggregated in the field. Heather plants were exposed to T. tenuis larvae in the laboratory and kept under suitable conditions for larval migration. Few larvae were found in dew droplets or concealed within heather leaflets; most larvae were recovered from the plant surface

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Gao, Shang-kun, Cui-cui Geng, Ying-chao Ji, Zi-kun Li, and Cheng-gang Zhou. "Density-Dependent Growth and Fitness in Dastarcus helophoroides (Coleoptera: Bothrideridae)." Insects 10, no. 11 (2019): 386. http://dx.doi.org/10.3390/insects10110386.

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The ectoparasitoid Dastarcus helophoroides Fairmaire (Coleoptera: Bothrideridae) is an important natural enemy insect, which is artificially mass-reared and released into woodland to control medium and large longhorn beetle species. This study examined the developmental duration (days) of larvae and adult fitness (including numbers of adults emerging per host and mean body size) by exposing a single substitute host, a pupa of Zophobas morio (Coleoptera: Tenebrionidae), to different densities of D. helophoroides larvae. We showed that there was no significant effect on the rate of successful pa

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Nale, Janet Y., Mahananda Chutia, Jeffrey K. J. Cheng, and Martha R. J. Clokie. "Refining the Galleria mellonella Model by Using Stress Marker Genes to Assess Clostridioides difficile Infection and Recuperation during Phage Therapy." Microorganisms 8, no. 9 (2020): 1306. http://dx.doi.org/10.3390/microorganisms8091306.

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The Galleria mellonella is an effective model for probing Clostridioides difficile interactions with phages. Despite valuable insights from this model, the larvae are not easily amenable to assessing detailed clinical responses to either bacteria or phages. Here, larval survival, colonisation and toxin levels were compared to expression profiles of 17 G. mellonella stress genes to monitor Clostridiodes difficile infection (CDI), and recuperation during phage therapy. The larvae were infected with a ribotype 014/020 isolate and treated with an optimised phage cocktail. Larvae treated prophylact

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Marini, Marini, Vivin Mahdalena, and Tanwirotun Ni'mah. "Potensi Ekstrak Daun Marigold (Tagetes erecta L.) sebagai Larvasida terhadap Larva Aedes aegypti di Laboratorium." Jurnal Vektor Penyakit 12, no. 2 (2018): 109–14. http://dx.doi.org/10.22435/vektorp.v12i2.898.

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Abstract Control of mosquito vectors by using natural ingredients is being developed intensively. Marigold (Tagetes erecta) was widely used as a mosquito repellent plant. The results of research before had found that marigold leaf extract has a repulsive effect on Aedes aegypti mosquitoes. This study aimed to identify the potential of marigold leaf extract as larvacide against Ae. aegypti larvae in the laboratory. The material used in this research was extracts of marigold leaves. Larvacide test was carried out by dissolving of extract in water at the concentration of 2,000 ppm, 4,000 pp

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Treviño-Cueto, Diego, Sergei A. Subbotin, and Sergio R. Sanchez-Peña. "Larvicidal Activity of Entomopathogenic Nematodes Isolated from Mexico against Aedes aegypti (Diptera: Culicidae)." Journal of Entomological Science 56, no. 1 (2021): 12–23. http://dx.doi.org/10.18474/0749-8004-56.1.12.

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Abstract Entomopathogenic nematodes (EPNs) are widely used agents of biological control, mainly targeting soil-inhabiting insect pests. Reports indicate that these terrestrial EPNs are also able to infect the aquatic larvae of mosquitoes. We isolated EPN strains (Heterorhabditis bacteriophora Poinar and Steinernema carpocapsae [Weiser]) from local soils at Saltillo, Coahuila state, Mexico. EPNs from these strains were produced in the laboratory in yellow mealworm (Tenebrio molitor L.) larvae, and their pathogenicity as infective juveniles (IJs) was tested against larvae of the yellow fever mos

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Eba, Kasahun, Luc Duchateau, Beekam Kebede Olkeba, et al. "Bio-Control of Anopheles Mosquito Larvae Using Invertebrate Predators to Support Human Health Programs in Ethiopia." International Journal of Environmental Research and Public Health 18, no. 4 (2021): 1810. http://dx.doi.org/10.3390/ijerph18041810.

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Mosquitoes have been a nuisance and health threat to humans for centuries due to their ability to transmit different infectious diseases. Biological control methods have emerged as an alternative or complementary approach to contain vector populations in light of the current spread of insecticide resistance in mosquitoes. Thus, this study aimed to evaluate the predation efficacy of selected potential predators against Anopheles mosquito larvae. Potential invertebrate predators and Anopheles larvae were collected from natural habitats, mainly (temporary) wetlands and ponds in southwest Ethiopia

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Iwan, Suryadi. "Habitat characteristics with an. barbirostris larva density in Bulukumba." E3S Web of Conferences 73 (2018): 06019. http://dx.doi.org/10.1051/e3sconf/20187306019.

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Bulukumba is a malaria endemic area in South Sulawesi with malaria cases reported annually, An.barbirostris as a potential vector of malaria in the area. This study aims to analyze habitat characteristics with a density of An. barbirostris larvae The method used is an observational study with ecological survey design through the cross-sectional approach of samples in the form of Anopheles larvae habitat. Bivariate analysis shows physical, chemical, and biological environmental factors. water temperature significant to the density of larva An.barbirostris with p-value = 0,002. Multivariate test

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Tzaneva, Velislava, and Steve F. Perry. "Role of endogenous carbon monoxide in the control of breathing in zebrafish (Danio rerio)." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 311, no. 6 (2016): R1262—R1270. http://dx.doi.org/10.1152/ajpregu.00094.2016.

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Carbon monoxide (CO) is a gaseous signaling molecule and is produced in vivo from the intracellular breakdown of heme via the heme oxygenase (HO) family of enzymes. In this study we investigated the role of the HO-1/CO system in the control of ventilation in zebrafish, Danio rerio. Immunohistochemistry revealed the presence of HO-1 in the chemoreceptive neuroepithelial cells (NECs) of larvae (4 days postfertilization) and adults, indicating the potential for endogenous CO production in the NECs. Hypoxia (20 min, water Po2 of 30 mmHg) caused a significant increase in HO-1 activity in whole larv

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Ashfaq, Muhammad, S. Y. Young, and R. W. McNew. "Bollworm (Lepidoptera: Noctuidae) Development and Movement on Bacillus thuringiensis-treated Cotton Leaves." Journal of Entomological Science 36, no. 1 (2001): 23–33. http://dx.doi.org/10.18474/0749-8004-36.1.23.

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Larval mortality, survivorship and movement of the bollworm, Helicoverpa zea (Boddie), on and away from Bacillus thuringiensis-treated cotton leaves were investigated in the laboratory. Bacillus thuringiensis (Costar®, Novartis Crop Protection, Inc; Greensboro, NC) was applied to the upper surface of cotton leaves via a spray table in five concentrations, i.e., 0.0 (control), 0.14, 0.29, 0.58, and 1.15 kg/ha. Three-day-old H. zea larvae were released on treated leaves, kept at 30°C, and transferred to artificial diet after 12, 24, and 48 h. Significantly higher numbers of larvae were found on

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Bagatto, B., B. Pelster, and W. W. Burggren. "Growth and metabolism of larval zebrafish: effects of swim training." Journal of Experimental Biology 204, no. 24 (2001): 4335–43. http://dx.doi.org/10.1242/jeb.204.24.4335.

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SUMMARY Larval zebrafish (Danio rerio) of three different age classes (‘yolk-sac’ larvae, 96 h; ‘swim-up’ larvae, 9 days old; and ‘free-swimming’ larvae, 21 days old) were trained for 2, 6 and 11 days, respectively, to swim at 0 body lengths per second (BL s–1), 2 BL s–1 and 5 BL s–1. Survival was significantly diminished in larvae trained at 5 BL s–1 compared to controls (0 BL s–1). Although training produced no significant differences in mass and length, the youngest larvae absorbed their yolk at a faster rate during training. Routine oxygen consumption (ṀO2r) and mass-specific routine oxyg

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Parker, Paul E. "Nematode Control of Silverleaf Nightshade (Solanum elaeagnifolium); a Biological Control Pilot Project." Weed Science 34, S1 (1986): 33–34. http://dx.doi.org/10.1017/s0043174500068351.

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The use of nematodes as biological control agents has been met with skepticism, partly due to the newness of the approach and also to the potential difficulties of using a parasitic worm as a control organism. Most of the attention directed towards nematodes as biological control agents has been focused on several species that act as insect parasites. Considerable headway has been achieved with several of these parasites, especially with those parasitic on wood-boring insect larvae. The insect gallery of wood-boring larvae provides an optimum microclimate for the nematode to survive and seek o

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Nasir, M., K. Sumawidjaja, K. Sumawidjaja, and Irzal Effendi. "Control of Natural Food with Diazinon for Growth and Survival of Marbled Goby, Oxyeleotris marmorata (Bleeker)." Jurnal Akuakultur Indonesia 3, no. 2 (2007): 19. http://dx.doi.org/10.19027/jai.3.19-24.

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<p>Dua percobaan telah dilakukan, yaitu tanpa dan dengan larva ikan. Percobaan pertama, yang menggunakan 3 konsentrasi diazinon 0. 2 dan 4 ppm dan 3 ulangan, mempelajari pertumbuhan rotifera, cladocera dan copepoda. Percobaan kedua mempunyai 2 perlakuan, yaitu diazinon 0 dan 4 ppm (yang terbaik dari percobaan pertama) serta 4 ulangan untuk mengevaluasi: 1) ketersediaan, pemanfaatan dan susunan jasad-jasad pakan, 2) pertumbuhan dan kelangsungan hidup larva, serta 3) perkembangan larva ikan. Larva yang berumur satu hari ditebar pada saat kelimpahan rotifera tertinggi di hapa dengan kepadat

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Gravinese, Philip M., Ian C. Enochs, Derek P. Manzello, and Robert van Woesik. "Ocean acidification changes the vertical movement of stone crab larvae." Biology Letters 15, no. 12 (2019): 20190414. http://dx.doi.org/10.1098/rsbl.2019.0414.

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Anthropogenic activities are increasing ocean temperature and decreasing ocean pH. Some coastal habitats are experiencing increases in organic runoff, which when coupled with a loss of vegetated coastline can accelerate reductions in seawater pH. Marine larvae that hatch in coastal habitats may not have the ability to respond to elevated temperature and changes in seawater pH. This study examined the response of Florida stone crab ( Menippe mercenaria ) larvae to elevated temperature (30°C control and 32°C treatment) and CO 2 -induced reductions in pH (8.05 pH control and 7.80 pH treatment). W

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Widiastuti, Zeny, Fahruddin Fahruddin, and I. Gusti Ngurah Permana. "PENGARUH PENGAYAAN Artemia sp. DENGAN SUMBER DHA YANG BERBEDA TERHADAP SINTASAN LARVA LOBSTER PASIR (Panulirus homarus)." Media Akuakultur 16, no. 1 (2021): 21. http://dx.doi.org/10.15578/ma.16.1.2021.21-31.

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Kegiatan pembenihan lobster masih dikembangkan di Indonesia. Sintasan yang rendah dan pakan yang sesuai masih menjadi masalah utama dalam kegiatan pembenihan lobster. Artemia sebagai pakan utama diduga belum mencukupi kebutuhan nutrisi larva lobster. Upaya pemberian bahan pengaya sebagai alternatif untuk meningkatkan nutrisi diharapkan dapat meningkatkan sintasan larva lobster. Pemberian bahan pengaya yang mengandung asam lemak dokosa heksanoid acid (DHA) ke Artemia dianggap penting bagi pertumbuhan dan sintasan pada krustasea. Tujuan penelitian ini untuk mengetahui performa larva lobster berd

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Edelson, J. V., M. Peters, J. Duthie, and W. Roberts. "Control of Lepidopterous Larvae on Collard, 1997." Arthropod Management Tests 23, no. 1 (1998): 91. http://dx.doi.org/10.1093/amt/23.1.91.

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Abstract Collard seed was planted in Mar at the AREC, Lane, OK. The experimental design was a RCB with 4 replicates and 9 treatments. Plots were 2 rows wide (72 inches) and 20 ft long with 20 ft alleys cut between plots. Plots were treated with insecticides using a CO2-powered backpack sprayer with a broadcast application of 72 inches from 4 hollow-cone nozzles applying 33 gal/A at 40 psi. Plots were treated on 4, 8, and 14 Jul. Plots were surveyed to determine larval abundance on 7, 11, and 17 Jul by examining 3 plants per plot and recording all larvae present.

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Klokočovnik, Vesna, Eva Veler, and Dušan Devetak. "Antlions in interaction: confrontation of two competitors in limited space." Israel Journal of Ecology and Evolution 66, no. 1-2 (2019): 73–81. http://dx.doi.org/10.1163/22244662-20191058.

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Abstract The study focused on the behaviour of sit-and-wait antlion larvae in interspecific interactions. Antlion larvae usually occur in clusters with a high density of individuals; therefore, competition can be intense. We observed two abundant antlion species, E. nostras and M. formicarius, which co-occur in some habitats. In a simple habitat choice experiment where substrates differed according to sand particle size, we found that E. nostras exhibited dominance over M. formicarius. Most E. nostras larvae remained in the more suitable substrate and constructed pits, while all the M. formica

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Sharma, Sudhendu, Ravinder Singh, and C. K. Gill. "Efficacy of anthranilic insecticide E2Y45 20 SC (Chlorantraniliprole) against Plutella xylostella L. in cabbage, Brassica oleracea var. capitata." Journal of Applied and Natural Science 8, no. 3 (2016): 1584–88. http://dx.doi.org/10.31018/jans.v8i3.1004.

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Experiments were conducted at farmerâ€™s cabbage fields to evaluate the bioefficacy of anthranilic insecticide i.e. E2Y45 20 SC (Chlorantraniliprole) having novel mode of action against the diamondback moth Plutella xylostella L. E2Y45 20 SC was applied @ 25.0, 37.5 and 50.0 ml/ha and was compared with Padan 50 SP (cartap hydrochloride) @ 500 g/ha and the untreated control. Lowest mean larval population after two sprays was recorded in higher dose of E2Y 45 20 SC i.e. @ 50.0 ml/ha (0.08 larvae/plant) at 7 days after treatment followed by medium and lower dose of E2Y 45 20 SC i.e. @ 37.5ml/ha (

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FERRAZ, ADRIANA C. P., DANIELE L. DALLAVECCHIA, DÉBORA C. SILVA, RENATO G. SILVA-FILHO, and VALÉRIA M. AGUIAR. "Post-embriononic development of Chrysomya putoria(Diptera: Calliphoridae) on a diet containing ampicillin in different concentrations." Anais da Academia Brasileira de Ciências 88, no. 1 (2016): 105–16. http://dx.doi.org/10.1590/0001-3765201620140440.

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Here we evaluate the effects of different concentrations of the antibiotic ampicillin on the growth and development of Chrysomya putoria. Third-generation, first instar larvae (L1) reared on 60 grams of homogenate+agar 65% were treated with ampicillin sodium. The experiment consisted of four replicates (40 larvae/replicate) of each antibiotic concentration tested (T1: 466µg/mL ; T2: 81.33 mg/mL and T3: 166.66mg/mL) and a T4: control. The body mass of the mature larvae, after they abandoned the diet, were recorded in batches of five. The variation between the mean body mass of larvae and the du

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Cubillos, V. M., O. R. Chaparro, Y. A. Montiel, and D. Véliz. "Unusual source of food: impact of dead siblings on encapsulated embryo development of Crepipatella fecunda (Gastropoda : Calyptraeidae)." Marine and Freshwater Research 58, no. 12 (2007): 1152. http://dx.doi.org/10.1071/mf07094.

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Embryonic cannibalism has been identified in directly developing calyptraeid species through observation of the ingestion of encapsulated sibling embryos. The object of the present study was to determine the effects of experimentally induced cannibalism on larval development in encapsulated larvae of Crepipatella fecunda (a species having mixed development). The effects studied included the time of intracapsular development, protoconch size and velar characteristics of the larvae. Mortality was induced during intracapsular development through mechanical disruption (‘treatment’) of embryos. A t

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Wikeem, Brian M., George W. Powell, and Allen Sturko. "BIOLOGY OF CYPHOCLEONVS ACHATES (COLEOPTERA: CURCULIONIDAE), PROPAGATED FOR THE BIOLOGICAL CONTROL OF KNAPWEEDS (ASTERACEAE)." Canadian Entomologist 131, no. 2 (1999): 243–50. http://dx.doi.org/10.4039/ent131243-2.

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AbstractCyphocleonus achates (Fahraeus) is a weevil used for the biological control of diffuse knapweed, Centaurea diffusa Monnet Del La Marck, and spotted knapweed, Centaurea maculosa Monnet Del La Marck, in North America. This research provided specific information on the biology of this insect in British Columbia. Adult weevils were released at six densities (1, 2, 4, 8, 16, and 32 male–female pairs) in each of 2 years into plots containing spotted knapweed. Larvae per plant, larval mass, larval survival, adult emergence, and air temperature were measured. Larval production increased with t

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Young, S. Y., and D. C. Steinkraus. "Control of Armyworm on Heading Wheat with Bacillus Thuringiensis Products and Baculoviruses, 1994." Arthropod Management Tests 21, no. 1 (1996): 318–19. http://dx.doi.org/10.1093/amt/21.1.318a.

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Abstract All applications were made on 26 Apr to ‘Wakefield’ winter wheat drilled on 6 inch row spacings on heading wheat in Lonoke Co., AR. A bicycle-type CO2 sprayer with a 12 ft boom equipped with TX-4 hollowcone nozzles on a 20-inch spacing, calibrated to deliver 10.5 gal/acre at 40 psi, was used for all treatments. Plots were 12 X 50 ft separated by 6 ft borders, arranged in a RCB design with 4 replications. A spreader sticker (CS-7) was added at a concentration of 1 ml/gal. The application was made late in the afternoon in a moderate breeze. No rainfall occurred during the test. Six Baci

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Wilson, J. R. U., M. Rees, and O. Ajuonu. "Population regulation of a classical biological control agent larval density dependence inNeochetina eichhorniaeColeoptera Curculionidae, a biological control agent of water hyacinthEichhornia crassipes." Bulletin of Entomological Research 96, no. 2 (2006): 145–52. http://dx.doi.org/10.1079/ber2005408.

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AbstractThe release of classical biological control agents has reduced the economic, environmental and social problems caused by water hyacinth,Eichhornia crassipes; however, additional control measures are needed in some locations. Water hyacinth plants were treated with different densities of eggs of the weevilNeochetina eichhorniaeWarner, one of the main control agents, under different nutrient regimes in a controlled experiment. Plants were destructively sampled and the development ofN. eichhorniaewas assessed. The survival of first and second instars declined as larval density increased.

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Saepudin, Malik, Soeharyo Hadisaputro, Ari Suwondo, and Suhartono Suhartono. "The Effect of Rekattidiri Ovitrap towards Aedes aegypti Larval Density." International Journal of Public Health Science (IJPHS) 6, no. 1 (2017): 78. http://dx.doi.org/10.11591/ijphs.v6i1.6536.

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Dengue Hemorrhagic Fever (DHF) is a health problem in Indonesia. The entire region of Indonesia at risk of contracting dengue disease. The study aims to prove the effect of modifications ovitrap rekattidiri on the density of larvae (HI: House Index, CI: Container Index and BI: Breteu Index) as well as comparing the differences between the mean larvae trapped between ovitrap Rekattidiri with standard ovitrap. Using a quasi experimental design, time series experimental design with Control group. Population subjects were Aedes aegypti at the endemic sites in Pontianak, West Borneo. The results sh

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Saepudin, Malik, Soeharyo Hadisaputro, Ari Suwondo, and Suhartono Suhartono. "The Effect of Rekattidiri Ovitrap towards Aedes aegypti Larval Density." International Journal of Public Health Science (IJPHS) 6, no. 1 (2017): 80. http://dx.doi.org/10.11591/.v6i1.6536.

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Dengue Hemorrhagic Fever (DHF) is a health problem in Indonesia. The entire region of Indonesia at risk of contracting dengue disease. The study aims to prove the effect of modifications ovitrap rekattidiri on the density of larvae (HI: House Index, CI: Container Index and BI: Breteu Index) as well as comparing the differences between the mean larvae trapped between ovitrap Rekattidiri with standard ovitrap. Using a quasi experimental design, time series experimental design with Control group. Population subjects were Aedes aegypti at the endemic sites in Pontianak, West Borneo. The results sh

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Sugauara, Elisangela Yumi, Isabelle Luiz Rahal, Herika Line Marko de Oliveira, et al. "Inga laurina crude extract to control Aedes aegypti." Research, Society and Development 9, no. 11 (2020): e1819119683. http://dx.doi.org/10.33448/rsd-v9i11.9683.

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Aedes aegypti is the um mosquito responsible for the transmission of several diseases to humans such as dengue, chikungunya, Zika virus and urban yellow fever. The control of this culicid is done by utilizing insecticides that cause insect resistance. Therefore, natural alternatives to control A. aegypti have been sought. Thus, the objective of our work was to characterize the chemical composition of the crude extract of the leaves of Inga laurina and to evaluate the insecticidal activity of the extract on the larvae of A. aegypti. The crude extract was prepared form dry leaves by dynamic mace

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Li, Zhiguo, Mengshang Hou, Yuanmei Qiu, Bian Zhao, Hongyi Nie, and Songkun Su. "Changes in Antioxidant Enzymes Activity and Metabolomic Profiles in the Guts of Honey Bee (Apis mellifera) Larvae Infected with Ascosphaera apis." Insects 11, no. 7 (2020): 419. http://dx.doi.org/10.3390/insects11070419.

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The fungus Ascosphaera apis, an obligate fungal pathogen of honey bee brood, causes chalkbrood disease in honey bee larvae worldwide. Biological characteristics of the fungal pathogen and the molecular interactions between A. apis and honey bees have been studied extensively. However, little is known about the effects of A. apis infection on antioxidant enzyme activities and metabolic profiles of the gut of honey bee larvae. In this study, sandwich enzyme-linked immunosorbent assay and LC-MS based untargeted metabolomic analysis were employed to determine the changes in the specific activities

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