Results 51 to 60 of about 3,650 (207)

Tributyltin: A Bottom–Up Regulator of the Crangon crangon Population?

Frontiers in Marine Science, 2019
The restrictions and the concerted action of the global ban on the use and presence of tributyltin (TBT) in marine applications to protect ecosystems in the marine environment in 2008 was mainly based on the economic impact on shellfish industries and ...
Koen F. V. Parmentier, Koen F. V. Parmentier, Yves Verhaegen, Yves Verhaegen, Bavo P. De Witte, Stefan Hoffman, Daan H. R. Delbare, Patrick M. Roose, Ketil D. E. Hylland, Thierry Burgeot, Guy J. Smagghe, Kris Cooreman   +11 more
doaj   +1 more source

Defecation in preparation for ecdysis drives microplastic clearance in cricket nymphs

Physiological Entomology, EarlyView.
In preparation for ecdysis, cricket nymphs cease feeding and gradually clear their gut contents via frass production, which removes most ingested MPs from their digestive tract. Following exoskeletal moulting, the foregut lining, including any remaining MPs, is shed and excreted alongside frass approximately 6 h later.
Jennie E. Mills, Marshall W. Ritchie, Émile Vadboncoeur, Heath A. MacMillan   +3 more
wiley   +1 more source

Extração de ecdisterona em raízes de ginseng brasileiro Extraction of ecdysterone from roots of Brazilian ginseng

Ciência Rural, 2009
Este estudo teve como objetivo otimizar a extração de ecdisterona em raízes de ginseng brasileiro. Primeiramente, para se avaliar a eficiência do solvente extrator, amostras de raízes dois acessos (BRA e JB-UFSM) de P.
Rejane Flores, Fernando Teixeira Nicoloso, Daniela Brondani, Joseila Maldaner, Verciane Cezarotto, Sandro Rogério Giacomelli   +5 more
doaj   +1 more source

Molecular Adaptations and Sex‐Biased Regulatory Pathways in Multi‐Year Diapause of the Cabbage Beetle Colaphellus bowringi: A Duration‐Resolved Transcriptomic Analysis

Ecology and Evolution, Volume 16, Issue 11, November 2026.
This study presents the first multi‐duration, sex‐stratified transcriptomic analysis of prolonged diapause in Colaphellus bowringi, revealing that extended dormancy is maintained by coordinated metabolic suppression and sustained activation of cytoprotective pathways (e.g., glutathione metabolism, autophagy).
Lili Huang, Yan Ni, Xin Ye, Xiaona Liu, Fangsen Xue, Haimin He   +5 more
wiley   +1 more source

The phytochemical, biological, and medicinal attributes of phytoecdysteroids: An updated review

Acta Pharmaceutica Sinica B, 2021
The phytoecdysteroids (PEs) comprise a large group of biologically-active plant steroids, which have structures similar to those of insect-molting hormones. PEs are distributed in plants as secondary metabolites that offer protection against phytophagus (
Niranjan Das, Siddhartha Kumar Mishra, Anusha Bishayee, Eunüs S. Ali, Anupam Bishayee   +4 more
doaj   +1 more source

Integrated Experimental, Chemometric, and In Silico Analyses of Larvicidal Supercritical Extracts From Myrtaceae Species Against Aedes aegypti

Chemistry &Biodiversity, Volume 23, Issue 10, October 2026.
The cross‐validated regression tree showed modest predictive performance. Mortality was not significantly associated with the first two PCA axes. Molecular modeling generated testable ligand–target hypotheses. Psidium cattleianum had lower LD50. The larvicidal activity of the crude extracts could not be attributed to individual constituents.
Ubiratan Alegransi Bones, Regiane Chiamente Pessetti, Gilberto Diniz Cozzer, Iuri Raiel Giacomelli, Maike Valentim Buzatto, Walter Antônio Roman Junior, Renan de Souza Rezende, Jacir Dal Magro, Vanessa da Silva Corralo   +8 more
wiley   +1 more source

Gas chromatographic analysis of ecdysteroids in the desert locust Schistocerca gregaria [PDF]

, 1979
The ecdysteroids present in 3rd, 4th, and 5th instar Schistocerca gregaria phase gregaria, and 5th instar Schistocerca gregaria, phase solitaria have been determined by gas chromatography with electron capture detection of their trimethylsilyl ethers ...

core   +4 more sources

Putative role of corazonin in the ovarian development of the swimming crab Portunus trituberculatus

Frontiers in Marine Science, 2022
Corazonin (Crz) is a neuropeptide that widely distributed in insects and crustaceans. The Crz is proposed to have pleiotropic functions in insects, but its physiological roles in crustaceans are poorly understood.
Shisheng Tu, Fuqiang Ge, Yaoyao Han, Mengen Wang, Xi Xie, Dongfa Zhu   +5 more
doaj   +1 more source

Diving Deeper Into Mechanisms of Acrylamide‐Induced Toxicity: RNA Sequencing Reveals Transcriptomic Alteration and Retrotransposon Expression in Drosophila melanogaster

Environmental Toxicology, Volume 41, Issue 10, Page 1105-1118, October 2026.
ABSTRACT Given the inevitability of human and animal exposure to acrylamide, there is increasing concern regarding its potential health risks. While a number of molecular mechanisms have been proposed, the complexity of acrylamide toxicological pathways and interactions remains incompletely characterized.
Oluwabukola Mary Farodoye, Titilayomi Ayomide Otenaike, Daniela Moreira Mombach, Monica Medeiros Silva, Amos Olalekan Abolaji, Elgion Lucio Da Silva Loreto   +5 more
wiley   +1 more source

Biotechnological potential of aquatic plant ecdysteroids

Romanian Journal of Horticulture
Ecdysteroids are polyhydroxylated sterols initially identified in insects but later reported in numerous terrestrial plants, including Ajuga, Rhaponticum, and Cyanotis. These metabolites display diverse biological properties such as anabolic, adaptogenic,
Asaloy J. Jumaniyozova, Nortoji Khojamshukurov   +1 more
doaj   +1 more source