Results 51 to 60 of about 11,999 (213)

The locust frontal ganglion: a central pattern generator network controlling foregut rhythmic motor patterns [PDF]

open access: yes, 2002
The frontal ganglion (FG) is part of the insect stomatogastric nervous system and is found in most insect orders. Previous work has shown that in the desert locust, Schistocerca gregaria, the FG constitutes a major source of innervation to the ...
Ayali, A., Cohen, N., Zilberstein, Y.
core  

Phase Shifts of the Circadian Locomotor Rhythm Induced by Pigment-Dispersing Factor in the Cricket Gryllus bimaculatus [PDF]

open access: yes, 2003
Pigment-dispersing factors (PDFs) are octadeca-peptides widely distributed in insect optic lobes and brain. In this study, we have purified PDF and determined its amino acid sequence in the cricket Gryllus bimaculatus.
Fujisawa, Yuko   +4 more
core   +1 more source

Insects and Survival: A Review of Primary and Secondary Defense Strategies

open access: yesEntomologia Experimentalis et Applicata, EarlyView.
Based on a review of three decades of literature, insect defense mechanisms are classified into primary (I) and secondary (II) mechanisms of behavioral, morphological, and chemical nature. These mechanisms have been recorded in 22 (I) and 20 (II) orders, respectively.
Lucas Fernandes Silva   +3 more
wiley   +1 more source

Phenotypic plasticity in Periplaneta americana photoreceptors

open access: yesJournal of General Physiology, 2018
Plasticity is a crucial aspect of neuronal physiology essential for proper development and continuous functional optimization of neurons and neural circuits. Despite extensive studies of different visual systems, little is known about plasticity in mature microvillar photoreceptors.
Roman V. Frolov   +5 more
openaire   +3 more sources

The essential roles of metal ions in insect homeostasis and physiology [PDF]

open access: yes, 2017
Metal ions play distinct roles in living organisms, including insects. Some, like sodium and potassium, are central players in osmoregulation and ‘blood and guts’ transport physiology, and have been implicated in cold adaptation.
Dow, Julian A.T.
core   +1 more source

Composition and Diversity Characteristics of Gut Microbiota during the Development of Telchinia issoria (Lepidoptera: Nymphalidae)

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
Ramie (Boehmeria nivea) is a traditional economic crop of high commercial value, whose cultivation is threatened by the leaf‐feeding pest Telchinia issoria. This study investigated how the gut microbiota of T. issoria shifts across its larval, pupal, and adult stages using 16S rRNA amplicon sequencing. ABSTRACT Ramie (Boehmeria nivea) was a traditional
Xin Yang   +5 more
wiley   +1 more source

Proctolin and an Endogenous Proctolin-Like Peptide Enhance the Contractility of the Limulus Heart [PDF]

open access: yes, 1983
Synthetic proctolin increases the force but not the rate of heart contractions of Limulus in a time- and dose-dependent manner. The threshold of this effect is 3 × 10−10M and the ED50 is approximately 10−8M. At concentrations up to 10−7 M, proctolin has
Augustine, George J.   +2 more
core   +2 more sources

Comparative Analysis of Gut Eukaryotic Communities in Three Laboratory‐Reared Cockroach Species Using Metabarcoding

open access: yesJournal of Eukaryotic Microbiology, Volume 73, Issue 3, May/June 2026.
ABSTRACT Cockroaches are known reservoirs for diverse bacterial microbiomes. However, comprehensive analyses of the eukaryotic communities within cockroaches remain limited. In this study, we selected three long‐term laboratory‐reared cockroach species (Blattella germanica, Periplaneta fuliginosa, and Periplaneta japonica) and performed metabarcoding ...
Dongjun Kang   +12 more
wiley   +1 more source

Type I hypersensitivity to nocturnal Lepidoptera in a Costa Rican allergic population

open access: yesRevista Alergia México, 2015
Background: Allergic patients are routinely tested for various allergens including molds, food, pollen, cockroaches and house dust mites; however, there are patients who present allergy symptoms but show negative results in Prick tests with the available
Cindy Sandí-Villalobos   +2 more
doaj   +1 more source

Cockroach‐Derived Leucokinin VIII Peptide Accelerates Diabetic Skin Wound Healing by Enhancing Keratinocyte Filopodia Formation

open access: yesAdvanced Science, Volume 13, Issue 24, 27 April 2026.
This study identifies the cockroach‐derived peptide leucokinin VIII as a potent accelerator of diabetic wound healing. By activating the FAK‐ACTG1 axis, the peptide drives keratinocyte migration and filopodia formation. Delivered via a developed PLGA‐PEG‐PLGA thermosensitive hydrogel for sustained release, this approach significantly hastens wound ...
Zhengshan Qin   +11 more
wiley   +1 more source

Home - About - Disclaimer - Privacy