Results 41 to 50 of about 7,048 (122)

Spiders can be recognized by counting their legs [PDF]

open access: yesarXiv, 2014
Spiders are arthropods that can be distinguished from their closest relatives, the insects, by counting their legs. Spiders have 8, insects just 6. Spider graphs are a very restricted class of graphs that naturally appear in the context of cograph editing. The vertex set of a spider (or its complement) is naturally partitioned into a clique (the body),
arxiv  

The quest for the best target genes for RNAi‐mediated pest control

open access: yesInsect Molecular Biology, EarlyView.
A major challenge for RNAi mediated pest control is the identification of the most effective RNAi target genes from the pool of ~37% of all genes that are essential. Effective RNAi target genes are predominantly highly conserved genes serving basic cellular functions such as protein degradation.
Doga Cedden, Gregor Bucher
wiley   +1 more source

Of Mites and Men: Johannes Kepler on Stars and Size [PDF]

open access: yesarXiv, 2018
In his 1606 De Stella Nova, Johannes Kepler attempted to answer Tycho Brahe's argument that the Copernican heliocentric hypothesis required all the fixed stars to dwarf the Sun, something Brahe found to be a great drawback of that hypothesis. This paper includes a translation into English of Chapter 16 of De Stella Nova, in which Kepler discusses this ...
arxiv  

Insecticide resistance management scenarios differ for RNA‐based sprays and traits

open access: yesInsect Molecular Biology, EarlyView.
dsRNA insecticides are developed as transgenic traits or sprays. IRM for dsRNA traits is based on stacked modes of action and a refuge. IRM for dsRNA sprays is based on rotating dsRNA with different modes of action insecticides. Abstract RNA‐based bioinsecticides that comprise a dsRNA active ingredient and function by RNA interference (RNAi) are being ...
Kenneth Narva   +8 more
wiley   +1 more source

Evaluation of Trap Crops and the Presence of the Predator Nabis americoferus for the Management of the Tarnished Plant Bug in Strawberries

open access: yesJournal of Applied Entomology, Volume 149, Issue 3, Page 372-383, April 2025.
ABSTRACT The polyphagous tarnished plant bug (TPB), Lygus lineolaris (Palisot de Beauvois) (Hemiptera: Miridae), inflicts substantial damage to strawberries and to several other valuable crops, impacting both yield quantity and quality. Effective control strategies are crucial to mitigate these losses. This study aimed to elucidate TPB host preferences
Mireia Solà Cassi   +4 more
wiley   +1 more source

Detection of Spider Mites on Labrador Beans through Machine Learning Approaches Using Custom Datasets [PDF]

open access: yesarXiv
Amidst growing food production demands, early plant disease detection is essential to safeguard crops; this study proposes a visual machine learning approach for plant disease detection, harnessing RGB and NIR data collected in real-world conditions through a JAI FS-1600D-10GE camera to build an RGBN dataset.
arxiv  

Population genetics and the role of dispersal barriers in the Antarctic springtail Kaylathalia klovstadi (Collembola, Isotomidae)

open access: yesJournal of Zoology, EarlyView.
Our study investigates the role of Tucker and Whitehall Glaciers as barriers to the dispersal of the springtail Kaylathalia klovstadi and examines its genetic population structure using mitochondrial DNA markers. Genetic analyses of 62 individuals from six populations reveal new insights into the species’ diversity and distribution, challenging ...
S. Boschi   +5 more
wiley   +1 more source

Ballooning Spiders: The Case for Electrostatic Flight [PDF]

open access: yesarXiv, 2013
We consider general aspects of the physics underlying the flight of Gossamer spiders, also known as ballooning spiders. We show that existing observations and the physics of spider silk in the presence of the Earth's static atmospheric electric field indicate a potentially important role for electrostatic forces in the flight of Gossamer spiders.
arxiv  

An Early‐Life Disruption of Gut Microbiota Has Opposing Effects on Parasite Resistance in Two Host Species

open access: yesMolecular Ecology, EarlyView.
ABSTRACT Gut microbiota regulate multiple aspects of host health, including metabolism and the development of the immune system. However, we still know relatively little about how the gut microbiota influences host responses to parasitism in wild organisms, particularly whether host‐microbiota interactions contribute to variation in parasitism across ...
Ashley C. Love   +4 more
wiley   +1 more source

High Quality Diet Enhances Immune Response and Affects Gene Expression During Viral Infection in an Insect Herbivore

open access: yesMolecular Ecology, EarlyView.
ABSTRACT Herbivorous insects tolerate chemical and metabolic variation in their host plant diet by modulating physiological traits. Insect immune response is one such trait that plays a crucial role in maintaining fitness but can be heavily influenced by variation in host plant quality.
Su'ad A. Yoon   +9 more
wiley   +1 more source

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