Results 21 to 30 of about 32,219 (267)

Determination of the Larval Instar Numbers of the Ectropis grisescens at Different Temperatures [PDF]

open access: yesChaye kexue
Ectropis grisescens is one of the most harmful pests in tea plantations, characterized by its frequent annual occurrences and considerable damage. The understanding of the larval instar number remains still elusive.
TANG Meijun, LI Hong, ZHANG Xinxin, JIANG Hongxin, WANG Zhibo, GUO Huawei, XIAO Qiang
doaj   +1 more source

Analyzing muscle structure and function throughout the larval instars in live Drosophila [PDF]

open access: yesSTAR Protocols, 2021
Drosophila larval musculature is a genetically and optically accessible system to study muscle development. Each larval muscle is a single fiber with conserved cytoarchitecture, including its sarcomere structure and composition. Here, we present a workflow for systematically analyzing muscle structure and function at discrete larval stages, as well as ...
Mridula Balakrishnan   +2 more
openaire   +3 more sources

Cumulative effect of HaNPV against Helicoverpa armigera infesting Chickpea

open access: yesEnvironment Conservation Journal, 2016
The instar-wise larval mortality in H. armigera due to HaNPV @ 0.500 ml/l showed a consistent decrease in all the five instars and cent per cent larval mortality was recorded in the first instar larvae.
C. Divya, D. M. Jethva, H. G. Kanara
doaj   +1 more source

Breaking the rule: Five larval instars in the podonomine midge Trichotanypus alaskensis Brundin from Barrow, Alaska

open access: yesJournal of Limnology, 2018
Except for one unconfirmed case, chironomid larvae have been reported to pass through four larval instars between egg and pupal stages. We have observed a fifth larval instar to be a standard life-cycle feature of the podonomine Trichotanypus alaskensis ...
Alec R. Lackmann, Malcolm G. Butler
doaj   +1 more source

The sex ratio of the koinobiont parasitoid Microcharops anticarsiae Gupta remains female-biased on young larvae of velvetbean in the laboratory environment

open access: yesActa Scientiarum: Biological Sciences, 2020
The natural parasitic behavior of parasitoids should be known by those in charge of planning strategies for the biological control of pests; therefore, the aim of the present study was to determine the larval instar of Anticarsia gemmatalis Hübner ...
Oniel Jeremias Aguirre Gil   +3 more
doaj   +1 more source

Stage-specific expression of an odorant receptor underlies olfactory behavioral plasticity in Spodoptera littoralis larvae

open access: yesBMC Biology, 2021
Background The detection of environmental cues and signals via the sensory system directs behavioral choices in diverse organisms. Insect larvae rely on input from the chemosensory system, mainly olfaction, for locating food sources.
Santosh V. Revadi   +11 more
doaj   +1 more source

Lepidopteran Larval Midgut During Prepupal Instar: Digestion or Self-Digestion? [PDF]

open access: yesAutophagy, 2007
Programmed cell death (PCD) is crucial in body restructuring during metamorphosis of holometabolous insects (those that have a pupal stage between the final larval and adult stages). Besides apoptosis, an increasing body of evidence indicates that in several insect species programmed autophagy also plays a key role in these developmental processes.
TETTAMANTI, GIANLUCA   +3 more
openaire   +4 more sources

Pathogenicity and Side Effect of Indigenous Beauveria bassiana on Coccinella undecimpunctata and Hippodamia variegata (Coleoptera: Coccinellidae)

open access: yesInsects, 2021
This study aimed to estimate the virulence of an indigenous Beauveria bassiana on all developmental stages of two indigenous coccinellids; Coccinella undecimpunctata and Hippodamia variegata through three application methods; direct spray, contact method,
Samy Sayed   +3 more
doaj   +1 more source

Action of fenoxycarb on metamorphosis and cocoon spinning in Chrysoperla carnea (Neuroptera: Chrysopidae): identification of the JHA-sensitive period

open access: yesEuropean Journal of Entomology, 2005
Fenoxycarb is an insecticide with a juvenile hormone mimicking effect, which disturbs metamorphosis in several insect species, including the neuropteran Chrysoperla carnea.
Laura BORTOLOTTI   +2 more
doaj   +1 more source

Endogenous 20-hydroxyecdysone levels in the haemolymph of non-diapause-destined and diapause-destined generations of tasar silkworm, Antheraea mylitta (Lepidoptera: Saturniidae) and associated developmental changes

open access: yesEuropean Journal of Entomology, 2008
A complete profile of the 20-hydroxyecdysone (20-HE) titer, development and endocrine events from 1st instar to pupation of the larvae of non-diapause-destined (NDD) and diapause-destined (DD) tasar silkworm, Antheraea mylitta Drury (Lepidoptera ...
Dinesh KUMAR   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy