Results 21 to 30 of about 72,052 (310)

Variation in honey bee gut microbial diversity affected by ontogenetic stage, age and geographic location [PDF]

open access: yes, 2015
Social honey bees, Apis mellifera, host a set of distinct microbiota, which is similar across the continents and various honey bee species. Some of these bacteria, such as lactobacilli, have been linked to immunity and defence against pathogens. Pathogen
Bunesova, Vera   +10 more
core   +3 more sources

Larval description and chaetotaxic analysis of dineutus sinuosipennis laporte, 1840, with a key for the identification of larvae of the tribe Dineutini (Coleoptera, Gyrinidae) [PDF]

open access: yes, 2017
The larvae of the Malagasy whirligig beetle Dineutus sinuosipennis Laporte, 1840, identified using DNA sequence data, are described and illustrated for the first time, including detailed morphometric and chaetotaxic analyses of selected structures and a ...
Bergsten, Johannes   +2 more
core   +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

A novel technique for identifying the instar of field-collected insect larvae. [PDF]

open access: yesPLoS ONE, 2013
Many field studies of insects have focused on the adult stage alone, likely because immature stages are unknown in most insect species. Molecular species identification (e.g., DNA barcoding) has helped ascertain the immature stages of many insects, but ...
Kôji Sasakawa
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

Description of the larval stages of Gymnochthebius jensenhaarupi and phylogenetic analysis of the relationships with other species of the subfamily Ochthebiinae (Coleoptera: Hydraenidae) [PDF]

open access: yes, 2005
The three larval instars of Gymnochthebius jensenhaarupi (Knisch, 1924) are described and illustrated, including a detailed analysis of their chaetotaxy and porotaxy. The specimens used in this study were collected with adults of G.
Archangelsky, Miguel, Delgado, Juan A.
core   +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

A role of corazonin receptor in larval-pupal transition and pupariation in the oriental fruit fly Bactrocera dorsalis (Hendel) (Diptera: Tephritidae) [PDF]

open access: yes, 2017
Corazonin (Crz) is a neuropeptide hormone, but also a neuropeptide modulator that is internally released within the CNS, and it has a widespread distribution in insects with diverse physiological functions.
Chen, Er-Hu   +7 more
core   +2 more sources

Study of the efficacy of Lambdacyhalothrin 10% wp and the Fruits extracts of Datura innoxia plant in the fourth larval instar and adults of sand fly Phlebotomus papatasi (Diptera: Psychodidae)

open access: yesTikrit Journal of Pure Science, 2018
The results of the present study, which aimed to demonstrate the efficacy of Lambdacyhalothrin 10% and alcoholic extracts of  Datura  innoxia  fruits in the control of fourth larval instar and adults of the phlebotomus  papatasi , indicated that the ...
Saeed Maher Lafta
doaj   +1 more source

Improved Random Forest for the Automatic Identification of Spodoptera frugiperda Larval Instar Stages

open access: yesAgriculture, 2022
Spodoptera frugiperda (fall armyworm, FAW) is a global agriculture pest. Adults have a strong migratory ability and larvae feed on the host stalks, which pose a serious threat for maize and other crops.
Jiajun Xu   +7 more
doaj   +1 more source

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