We examined the utility of fluorescent fatty acid analog dyes for labeling larval trematodes to use in experimental infections. Our goals were to identify two dyes that label larval trematodes belonging to the species Maritrema novaezealandensis and Coitocaecum parvum, determine if the dyes influence survival and infectivity of larval trematodes and/or host mortality, and if larval trematodes l...

We characterized the dynamics of mortality factors affecting immature developmental stages of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae). Multiple decrement life tables for egg and early larval stages of S. frugiperda in maize (Zea mays L.) fields were developed with and without augmentative releases of Telenomus remus Nixon (Hymenoptera: Platygastridae) from...

Evidence supporting the occurrence of starving larval fish in the ocean was mainly circumstantial (May, 1974; Jones and Hall, 1974: Lasker, 1975) until recently, when the presence of starving ocean-caught larval northern anchovy, Engraulis mordax, was documented using histological criteria (O'Connell, 1980). Subsequently, using similar criteria, Theilacker (1986) quantified starvation-induced m...

Larval development time is a critical factor in assessing the potential for larval transport, mortality, and subsequently, the connectivity of marine populations through larval exchange. Most estimates of larval duration are based on laboratory studies and may not reflect development times in nature. For larvae of the American lobster (Homarus americanus), temperature-dependent development time...

BACKGROUND & OBJECTIVES Vector control will for sometime remain a primary weapon in the war against vector borne diseases. Malaria is of paramount importance in this with its associated high morbidity and mortality especially in sub-Saharan Africa. This study on generational mortality associated factors in Anopheles mosquitoes life-table analysis was designed to investigate the fecundity, level...

Planktonic larval durations (PLDs) affect the ecology and evolution of benthic marine populations through their effects on dispersal distance, the spread of sibling larvae, the level of larval mortality, and population connectivity. Despite the importance of PLDs, field estimates of PLDs in marine invertebrates are rare and restricted to specific taxa. The size of the first postmetamorphic feed...

The present investigation was carried during year 2019-2020 at Division of Entomology, Faculty Agriculture, Wadura, Sopore. A total six larval instars Agrotis ipsilon, were noticed in three generations one calendar year, the study. average length and breadth from first to sixth cutworm caterpillars ranged between 1.88 -34.21mm 0.35-3.5mm respectively. Whereas, mean developmental durati...

beet armyworm, spodoptera exigua hübner, (lep., noctuidae), is one of the most important polyphagous pests of sugar beet in iran and many other countries. in most cases, this pest needs to be controlled for a few times in a crop season. baculoviruses are effective biological control agents which could be integrated to control program of this pest with other integrated pest management (ipm) elem...

BACKGROUND The present study was undertaken to study the larvicidal activity of different extracts of Nerium oleander leaves, and post-treatment temperature- toxicity relationship of these extracts against Culex pipiens. Further, the most potent extract was used to evaluate its biological and genotoxic activities. METHODS Crude extracts of N. oleander leaves were prepared using water, chlorof...