Results 321 to 330 of about 157,431 (344)

The Number of Naupliar Instars in Cyclopoida (Copepoda)

Crustaceana, 1970
[L'etude detaillee du developpement larvaire de Cyclops scutifer Sars a montre que six stades naupliens sont presents dans les populations naturelles de cette espece. N 4 et N 5 pouvaient etre distingues par la difference de taille et de forme des minuscules epines terminales du corps a un grossissement de 500 environ.
A.L. Langeland, K. Elgmork
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Changes in Haemolymph Proteins in First Instar Locusts

Archives Internationales de Physiologie et de Biochimie, 1966
A number of studies have recently shown that the hacmolymph proteins of Insects change during development. Most of the work in this field has however been done on holometabolous Insects, while only a few studies have been made on the Hemimetabola (STEINHAUER and STEPHEN, 1959 on Periplanefa ; MISSELIJN, KARCHER, DE KEYSER, and VAN SANDE, 1959 on ...
A. Scott, F. W. McCormick
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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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Key to Mosquito Fourth Instar Larvae

2003
Abdominal segment VIII without elongate siphon (Fig. 8.1a).Anopheles (p 164) Abdominal segment VIII with elongate siphon (Fig.
Marija Zgomba, Dušan Petrić, Minoo B. Madon, Clive Boase, Norbert Becker, Achim Kaiser, Christine Dahl   +6 more
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Morphology of juvenile instars of Ameronothridae (Acari: Oribatida)

Zootaxa, 2012
Juvenile instars of four species of the oribatid mite family Ameronothridae— Alaskozetes antarcticus intermedius, Amer-onothrus lineatus, Halozetes crozetensis and Pseudantarcticola georgiae—are described and illustrated in detail. Knownjuvenile instars of the family are compared, new diagnoses are given when possible, and identification keys to genera
Ermilov, Sergey G., Stary, Josef, Block, William   +2 more
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Instar and outstar learning with memristive nanodevices

Nanotechnology, 2010
The instar and outstar synaptic models are among the oldest and most useful in the field of neural networks. In this paper we show how to approximate the behavior of instar and outstar synapses in neuromorphic electronic systems using memristive nanodevices and spiking neurons. Memristive nanodevices are especially attractive for this application since
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Instars of the Hessian Fly (Diptera: Cecidomyiidae)

Annals of the Entomological Society of America, 1989
Larvae of the Hessian fly, Mayetiola destructor (Say), are shown to have three instars. The first instar feeds for approximately 6 d, during which much of the larval growth occurs. Considerable anatomical differences exist among instars. These differences are described and illustrated by drawings and SEM photographs.
J. H. Hatchett, Raymond J. Gagné
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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 ...
Sören Nylin, Toomas Tammaru, Toomas Esperk   +2 more
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Nymph Anatomy and Instar Determination

2019
Knowledge of the external anatomy of Odonata nymphs is necessary for learning how to use the keys for identification. Basic morphology and terminology of all structures crucial for identification of Anisoptera nymphs to family, genus and species are described and illustrated in detail beginning with orientation of the dragonfly nymph body and the basic
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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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