Results 41 to 50 of about 11,890 (229)

Chemical and bioactive potential of the nests of Polistes nimpha, Polistes dominula, and Vespa crabro (Hymenoptera: Vespidae)

International Journal of Secondary Metabolite
This work was accomplished to establish the chemical components and bioactivity potential of the nest materials of Polistes nimpha (Christ), Polistes dominula (Christ), and Vespa crabro (L.).
Zehra Can, Ömer Ertürk, Mustafa Yaman
doaj   +1 more source

Structures, properties, and functions of the stings of honey bees and paper wasps: a comparative study

Biology Open, 2015
Through natural selection, many animal organs with similar functions have evolved different macroscopic morphologies and microscopic structures. Here, we comparatively investigate the structures, properties and functions of honey bee stings and paper ...
Zi-Long Zhao, Hong-Ping Zhao, Guo-Jun Ma, Cheng-Wei Wu, Kai Yang, Xi-Qiao Feng   +5 more
doaj   +1 more source

A Female‐Locust‐Inspired Hybrid Soft‐Stiff Robotic Digger: Mimetics and Implications for Digging Efficiency

Advanced Intelligent Systems, EarlyView.
Female desert locusts dig underground to lay their eggs. They displace soil, rather than removing it, to create a tunnel. We analyze burrowing dynamics and 3D kinematics and design a locust‐inspired hybrid soft–stiff robot that reproduces this mechanism. The results show the natural strategy minimizes energy, whereas alternative patterns raise costs up
Shai Sonnenreich, Amir Ayali, Bat‐El Pinchasik   +2 more
wiley   +1 more source

Why we age

Biological Reviews, EarlyView.
ABSTRACT Three categories of explanations exist for why we age: mechanistic theories, which omit reference to evolutionary forces; weakening force of selection theories, which posit that barriers exist that prevent evolutionary forces from optimising fitness in ageing; and optimisation theories, which posit that evolutionary forces actually select for ...
Michael S. Ringel
wiley   +1 more source

Molecular bases of insect odorant receptor function: specificity and evolution

Biological Reviews, EarlyView.
ABSTRACT Insect odorant receptors (ORs) are a class of chemoreceptors that insects use to detect volatile cues in their environment. In recent years, major advances in the field of structural biology have made it possible to obtain the first structures of insect ORs.
Zibo Li, Abhinob Baruah, Sridevi Bhamidipati, Nicolas Montagné, Emmanuelle Jacquin‐Joly, Camille Meslin   +5 more
wiley   +1 more source

Alkali Effect on Alkali-Surfactant-Polymer (ASP) Flooding Enhanced Oil Recovery Performance: Two Large-Scale Field Tests’ Evidence

Journal of Chemistry, 2020
Alkali-surfactant-polymer (ASP) flooding is very promising chemical enhanced oil recovery (EOR) technology which can make an incremental oil recovery factor (IORF) of 30% original oil in place (OOIP).
Chen Sun, Hu Guo, Yiqiang Li, Guipu Jiang, Ruicheng Ma   +4 more
doaj   +1 more source

The flexible, the stereotyped and the in‐between: putting together the combinatory tool use origins hypothesis

Biological Reviews, EarlyView.
ABSTRACT Tool use research has long made the distinction between tool using that is considered learned and flexible, and that which appears to be instinctive and stereotyped. However, animals with an inherited tool use specialisation can exhibit flexibility, while tool use that is spontaneously innovated can be limited in its expression and facilitated
Jennifer A. D. Colbourne, Alice M. I. Auersperg   +1 more
wiley   +1 more source

Tropical paper wasps serve long apprenticeships [PDF]

Journal of Experimental Biology, 2019
![Figure][1] A nest of Ropalidia marginata wasps. Photo credit: Souvik Mandal. Growing up in rural India, Souvik Mandal was always fascinated by the behaviour of the animals that surrounded him.
openaire   +1 more source

The Influence of Drosophila Spire and Myosin V During Mid‐Oogenesis Is Independent of Their Direct Interaction

Cytoskeleton, EarlyView.
ABSTRACT Cooperativity between cytoskeletal proteins is crucial for spatiotemporal coordination in biological processes, like oogenesis. In mammalian and Drosophila oogenesis, proper assembly and function of actin networks require coordination between actin assembly factors Spire and formins, as well as actin‐associated proteins like myosins and Rab ...
Joseph Y. Ong, Hannah M. Bailey, Emma Carley, Michelle Panzica, Merin Rixen, Neil Billington, Rong Liu, Margot E. Quinlan   +7 more
wiley   +1 more source

Seasonality and nesting habits of the endemic social wasp Polistes ridleyi Kirby, 1890 in the Fernando de Noronha Archipelago, Northeast Brazil

Sociobiology, 2023
We studied the seasonality and made notes about the nesting habits of the endemic social wasp Polistes ridleyi Kirby, 1890 of the Fernando de Noronha Archipelago. We collected 427 adult paper wasp P.
Alexandre Somavilla, Thiago Mahlmann, Bruno Correa Barbosa, Francisco Limeira-de-Oliveira, José Albertino Rafael   +4 more
doaj   +1 more source