Results 11 to 20 of about 203,044 (309)

The implications of temperature-mediated plasticity in larval instar number for development within a marine invertebrate, the shrimp Palaemonetes varians. [PDF]

PLoS ONE, 2013
Variations in larval instar number are common among arthropods. Here, we assess the implications of temperature-mediated variations in larval instar number for larval development time, larval growth rates, and juvenile dry weight within the palaemonid ...
Andrew Oliphant, Chris Hauton, Sven Thatje   +2 more
doaj   +2 more sources

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

Agriculture, 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, Zelin Feng, Jian Tang, Shuhua Liu, Zhiping Ding, Jun Lyu, Qing Yao, Baojun Yang   +7 more
doaj   +2 more sources

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

Parasites & Vectors, 2016
Background Cannibalism 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
Daniele Porretta, Valentina Mastrantonio, Graziano Crasta, Romeo Bellini, Francesco Comandatore, Paolo Rossi, Guido Favia, Claudio Bandi, Sandra Urbanelli   +8 more
doaj   +2 more sources

Determination of the Larval Instar Numbers of the Ectropis grisescens at Different Temperatures [PDF]

Chaye kexue
Ectropis grisescens is one of the most harmful pests in tea plantations, characterized by its frequent annual occurrences and considerable damage. The understanding of the larval instar number remains still elusive.
TANG Meijun, LI Hong, ZHANG Xinxin, JIANG Hongxin, WANG Zhibo, GUO Huawei, XIAO Qiang
doaj   +1 more source

Analyzing muscle structure and function throughout the larval instars in live Drosophila [PDF]

STAR 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, Whitney J. Sisso, Mary K. Baylies   +2 more
openaire   +3 more sources

Cumulative effect of HaNPV against Helicoverpa armigera infesting Chickpea

Environment Conservation Journal, 2016
The instar-wise larval mortality in H. armigera due to HaNPV @ 0.500 ml/l showed a consistent decrease in all the five instars and cent per cent larval mortality was recorded in the first instar larvae.
C. Divya, D. M. Jethva, H. G. Kanara
doaj   +1 more source

Influence of temperature on the larval development of the edible crab Cancer pagurus [PDF]

, 2009
The influence of temperature on larval survival and development was studied in the edible crab, Cancer pagurus, from a population off the Island of Helgoland, North Sea.
Keller, Martina, Thatje, S., Heilmayer, O., Anger, Klaus, Weiss, Monika, Heilmayer, Olaf, Anger, K., Brey, T., Brey, Thomas, Weiss, M.   +9 more
core   +1 more source

Breaking the rule: Five larval instars in the podonomine midge Trichotanypus alaskensis Brundin from Barrow, Alaska

Journal of Limnology, 2018
Except for one unconfirmed case, chironomid larvae have been reported to pass through four larval instars between egg and pupal stages. We have observed a fifth larval instar to be a standard life-cycle feature of the podonomine Trichotanypus alaskensis ...
Alec R. Lackmann, Malcolm G. Butler
doaj   +1 more source

The sex ratio of the koinobiont parasitoid Microcharops anticarsiae Gupta remains female-biased on young larvae of velvetbean in the laboratory environment

Acta Scientiarum: Biological Sciences, 2020
The natural parasitic behavior of parasitoids should be known by those in charge of planning strategies for the biological control of pests; therefore, the aim of the present study was to determine the larval instar of Anticarsia gemmatalis Hübner ...
Oniel Jeremias Aguirre Gil, Leandro Aparecido de Souza, Marina Funichello, Antonio Carlos Busoli   +3 more
doaj   +1 more source

Stage-specific expression of an odorant receptor underlies olfactory behavioral plasticity in Spodoptera littoralis larvae

BMC Biology, 2021
Background The detection of environmental cues and signals via the sensory system directs behavioral choices in diverse organisms. Insect larvae rely on input from the chemosensory system, mainly olfaction, for locating food sources.
Santosh V. Revadi, Vito Antonio Giannuzzi, Valeria Rossi, Gert Martin Hunger, Lucie Conchou, Gabriele Rondoni, Eric Conti, Peter Anderson, William B. Walker, Emmanuelle Jacquin-Joly, Fotini Koutroumpa, Paul G. Becher   +11 more
doaj   +1 more source