Results 21 to 30 of about 105,801 (341)

Ontogenetic development and reproduction of Zorocrates guerrerensis (Araneae: Zoropsidae)

open access: yesArachnologische Mitteilungen, 2018
Zorocrates guerrerensis Gertsch & Davis, 1940 is a Mexican cribellate spider with almost no information about its biology. As the species could potentially be of medical interest, it was decided to study basic aspects of its life history under laboratory
Dolejš, Petr, Hanko, Mojmír
doaj   +1 more source

SUPERNUMERARY LARVAL INSTARS IN CYCLORRHAPHOUS DIPTERA

open access: yesThe Biological Bulletin, 1972
1. The developmental program for metamorphosis is determined in third instar larvae of Calliphora and Sarcophaga very early after ecdysis. The process is activated by feeding and can be delayed for many days by starvation.2. High doses of ecdysterone (20 µg per larva) injected just after ecdysis or in starved larvae cause a precocious molt and the ...
Žďárek, Jan, Slama, K
openaire   +5 more sources

Leaf trichomes affect caterpillar feeding in an instar-specific manner

open access: yesCommunicative & Integrative Biology, 2018
Leaf trichomes play well-established roles in defense against insect herbivores, both as a physical barrier that impedes herbivore movement and by mediating chemical defenses.
R. Kariyat   +5 more
semanticscholar   +1 more source

A Comparison of Three Approaches for Larval Instar Separation in Insects—A Case Study of Dendrolimus pini

open access: yesInsects, 2019
The number of larval instars is important from both theoretical and practical perspectives. Three previous studies based on head capsule widths (HCWs) have suggested that Dendrolimus pini larvae pass through seven instars, but the estimated HCW means ...
Lidia Sukovata
doaj   +1 more source

The Potency of Metarhizium anisopliae in Disturbing Oryctes rhinoceros (Coleoptera: Scarabaeidae) Growth and Development

open access: yesJurnal Perlindungan Tanaman Indonesia, 2022
Metarhizium anisopliae is one of the most frequently used insect pathogen fungi in controlling Oryctes rhinoceros. This research aims to learn the potency of fungus M. anisopliae against O. rhinoceros larvae growth and development at the laboratory.
Ummi Maysaroh, Edhi Martono, Tri Harjaka
doaj   +1 more source

Number of larval instars and sex-specific plasticity in the development of the small heath butterfly, Coenonympha pamphilus (Lepidoptera: Nymphalidae)

open access: yesEuropean Journal of Entomology, 2006
The number of larval moults, larval head capsule width and pupal weight were investigated in both direct-developing and diapausing individuals of a South-West European population of Coenonympha pamphilus.
Enrique GARCÍA-BARROS
doaj   +1 more source

Muscidae (Diptera) of forensic importance—an identification key to third instar larvae of the western Palaearctic region and a catalogue of the muscid carrion community

open access: yesZeitschrift für Rechtsmedizin, 2016
The Muscidae is one of the main dipteran families recognized as important for medico-legal purposes. Although an association of adult flies with decomposing human and animal bodies is documented for about 200 taxa worldwide, cadavers and carrion ...
A. Grzywacz, M. Hall, T. Pape, K. Szpila
semanticscholar   +1 more source

Improved Monitoring of Grapholita molesta (Lepidoptera: Tortricidae) in Stone Fruit Orchards with a Pheromone-Kairomone Combination Lure

open access: yesInsects, 2020
Monitoring oriental fruit moth Grapholita molesta Busck (Lepidoptera: Tortricidae), populations based on counts in sex pheromone-baited traps within sex pheromone-treated orchards for mating disruption (MD) is challenging since male orientation to traps ...
Michele Preti   +2 more
doaj   +1 more source

Extraordinary morphological changes in valve morphology during the ontogeny of several species of the Australian ostracod genus Bennelongia (Crustacea, Ostracoda)

open access: yesEuropean Journal of Taxonomy, 2013
Ostracods belonging to the genus Bennelongia differ much in valve morphology between adults and juveniles. Adult valves are asymmetrical, characterised by a beak-like feature in the antero-ventral region of the left valve, and, with some notable ...
Patrick De Deckker, Koen Martens
doaj   +1 more source

Intra-instar larval cannibalism in Anopheles gambiae (s.s.) and Anopheles stephensi (Diptera: Culicidae)

open access: yesParasites & Vectors, 2016
BackgroundCannibalism has been observed in a wide range of animal taxa and its importance in persistence and stability of populations has been documented. In anopheline malaria vectors the inter-instar cannibalism between fourth- and first-instar larvae (
D. Porretta   +8 more
semanticscholar   +1 more source

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