Results 261 to 270 of about 40,824 (309)

Ecology and Behavior of First Instar Larval Lepidoptera

Annual Review of Entomology, 2002
▪ Abstract  Neonate Lepidoptera are confronted with the daunting task of establishing themselves on a food plant. The factors relevant to this process need to be considered at spatial and temporal scales relevant to the larva and not the investigator.
Zalucki, Myron, Clarke, Anthony, Malcolm, Stephen   +2 more
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Intraspecific Variability in Number of Larval Instars in Insects

Journal of Economic Entomology, 2007
The number of larval instars varies widely across insect species. Although instar number is frequently considered to be invariable within species, intraspecific variability in the number of instars is not an exceptional phenomenon. However, the knowledge has remained fragmentary, and there are no recent attempts to synthesize the results of relevant ...
Toomas, Esperk, Toomas, Tammaru, Sören, Nylin   +2 more
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Effects of RH‐5992 on ecdysteroidogenesis of the prothoracic glands during the fourth larval instar of the silkworm, Bombyx mori

Archives of Insect Biochemistry and Physiology, 2008
Stage-dependent effects of RH-5992 on ecdysteroidogenesis of the prothoracic glands during the fourth larval instar of the silkworm, Bombyx mori, were studied in the present report.
Shi-Hong Gu, Pei-Ling Lin, Rong Kou
exaly   +2 more sources

Scanning electron microscopy of the larval instars of Cochliomyia hominivorax

Medical and Veterinary Entomology, 1993
Abstract. Descriptions are given of the morphological features of laboratory‐reared first to third larval stages of Cochliomyia hominivorax. The pseudo‐cephalon, spines and papillae of the segments, and the anterior and posterior spiracles of all three larval stages were ...
A C, Leite, J D, Guevara
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Cannibalism and early instar survival in a larval damselfly

Oecologia, 1994
Cannibalism by larval damselflies late in larval development on larvae a few instars smaller has been widely documented. I examine here the survival of eggs oviposited near the end of the flight season of adult Enallagma boreale in the presence and absence of potential cannibals, individuals that hatched from eggs earlier in the season, over an ...
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INSTAR DIFFERENTIATION IN LARVAL CHIRONOMIDAE (DIPTERA)

The Canadian Entomologist, 1974
AbstractExamination of the most commonly used criteria for separating instars in larval chironomids, based on a study of 29 species from three subfamilies in Marion Lake, British Columbia, revealed that only head capsule width or length is suitable. Most chironomids appear to have four larval instars.
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The Larval Instars of Wohlfahrtia Pattoni (Diptera: Calliphoridae: Sarcophaginae)

Journal of Medical Entomology, 1973
Wohlfahrtia pattoni was colonized in the laboratory from pupae collected in Sharjah, Sharjah State. Like other members of the genus this fly is ovoviviparous but it is not known whether larvae are deposited on living animals or dead organic matter. In 6-way choice trials in the laboratory using lean meat as a larviposition substrate, females preferred ...
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Morphological determination of the larval instars of Eupeodes americanus (Diptera: Syrphidae)

Phytoprotection, 2022
En Amérique du Nord, le potentiel du syrphe d’Amérique Eupeodes americanus (Wiedemann, 1830) (Diptera: Syrphidae) comme agent de lutte biologique a été démontré, notamment contre le puceron de la digitale Aulacorthum solani Kaltenbach, 1843 (Hemiptera: Aphididae).
Fauteux, Arlette, Gonzalez, Noémie, Soares, António O., Lucas, Éric   +3 more
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Does the insect brain count larval instars?

Experientia, 1979
It has been presumed on the basis of transplantations of the neuroendocrine complex that the ‘counting of instars’ mechanism lies within the brain. The brain is programmed already in the 3rd instar to inactivate the corpus allatum. The inactivation sets in in the late penultimate (4th) instar.
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Size compensation in moth larvae: attention to larval instars

Physiological Entomology, 2010
Environmental perturbations such as starvation and poor diet often prevent animals from attaining their optimal sizes. When the perturbation has a transient character, compensatory responses are expected in terms of faster growth or a prolonged developmental period.
TOOMAS ESPERK, TOOMAS TAMMARU
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