Results 271 to 280 of about 40,824 (309)
Some of the next articles are maybe not open access.
How many larval instars do Raphidioptera have?
Spixiana: Zeitschrift für Zoologie, 2023The development of two species of Raphidiidae occurring in Central Europe, Raphidia mediterranea H. Aspöck, U. Aspöck & Rausch, 1977, and Ornatoraphidia flavilabris (A. Costa, 1855) was studied by rearing them ‘ab ovo’ in order to clarify the number of larval instars and the length of the larval periods.
Gruppe, Axel +2 more
openaire +1 more source
Characterization of larval instars of artemisia weevil, Adosomus sp.
Forestry Studies in China, 2009The artemisia weevil, Adosomus sp., has become an important wormwood (Artemisia ordosoca and A. sphaerocephala) pest in recent years in Ningxia Province, China. The number of larval instars should be determined before further studies on its life history, biology and integrate management of pest (IMP).
Jian-wei Wang +4 more
openaire +1 more source
Prey capture by the four larval instars of Chaoborus crystallinus
Limnology and Oceanography, 1992Prey capture ability of fourth‐instar Chaoborus larvae has been studied widely but relatively little comparable information is available for the first three larval instars. In this laboratory study I measured strike and contact efficiencies of all four instars of Chaoborus crystallinus. The effectiveness of prey escape behavior was also recorded.
openaire +1 more source
Induction of Volatile Emissions in Maize by Different Larval Instars of Spodoptera littoralis
Journal of Chemical Ecology, 2003Maize plants under attack by caterpillars emit a specific blend of volatiles that is highly attractive to parasitic wasps. The release of these signals is induced by elicitors in the caterpillar regurgitant. Studies suggest that plants respond differently to different herbivore species and even to different herbivore stages, thus providing parasitoids ...
Gouinguené S, Alborn H, Turling TC
openaire +3 more sources
Visualization of larval segmental nerves in 3(rd) instar Drosophila larval preparations.
Journal of visualized experiments : JoVE, 2010Drosophila melanogaster is emerging as a powerful model system for studying the development and function of the nervous system, particularly because of its convenient genetics and fully sequenced genome. Additionally, the larval nervous system is an ideal model system to study mechanisms of axonal transport as the larval segmental nerves contain ...
Samantha, Fye +3 more
openaire +1 more source
The Deposition of the Third Instar Larval Cuticle of Calliphora erythrocephala
Journal of Cell Science, 1954ABSTRACT A histological study has been made of the formation of the cuticle of the third instar of Calliphora. Increase in size of the epidermal cells and nuclei, particularly in the spiny regions, preceded the release of the moulting fluid.
openaire +1 more source
Recognition of Five Larval Instars in Conotrachelus perseae (Coleoptera: Curculionidae)
Journal of Entomological Science, 2019Head capsule widths of Conotrachelus perseae Barber (Coleoptera: Curculionidae) larvae extracted from avocado, Persea americana Mill. cv. Fuerte, were measured by computerized imagery. Head capsule widths ranged from 212 to 1,562 µm and, according to an analysis of frequency distribution using the HCAP program and Dyar's rule, formed five well-defined ...
Á. Castañeda-Vildózola +5 more
openaire +1 more source
Frass Size as an Indicator of Spruce Budworm Larval Instars
Annals of the Entomological Society of America, 1959Frass width, but not its length or volume, shows correlation with the various larval instars. The mean width, and the standard deviation, for each instar are tabulated. Frass, collected in cone-shaped cloth traps in the field, can be used as an index of the percent of larvae in each instar present when the collection is made.
openaire +1 more source
Needle-Mining Habits and Larval Instars of the Spruce Budworm
The Canadian Entomologist, 1954Many of the early papers on the spruce budworm,Choristoneura fumiferana(Clem.), included accounts of the general habits and seasonal history of the insect (9, 13, 18, 10, 22). Later papers have heen concerned principally with ecological or pathological relations, current infestations and damage, or chemical control.
openaire +1 more source
Bioassay of nuclear-polyhedrosis virus against larval instars of the gypsy moth
Journal of Invertebrate Pathology, 1967Abstract The relative susceptibility of three larval instars of the gypsy moth, Porthetria dispar , to a nuclear-polyhedrosis virus was studied by bioassay in the laboratory. The LC 50 values for first-, second-, and third-instar larvae were 0.23, 2.3, and 2.5 polyhedral inclusion bodies per mm 2 of food surface (PIBs/mm 2 ).
openaire +2 more sources