Results 81 to 90 of about 158,614 (342)

Condors, Caracaras and the Antisana Ecological Reserve: Have Recent Conservation Efforts Backfired!

Пернатые хищники и их охрана, 2018
The 1993 creation of the 120,000 ha Antisana Ecological Reserve (Ecuador) to protect the unique flora and fauna surrounding the Volcano Antisana continues to evolve.
Mark R. Welford
doaj  

Differential detectability of rodents and birds in scats of ocelots, Leopardus pardalis (Mammalia: Felidae)

Zoologia (Curitiba), 2011
Scat analysis is a valuable tool for the description and quantification of mammal diets. However, estimating the number of prey eaten using prey remains found in feces is difficult mainly due to differential digestibility of prey.
Mathias M. Pires, Cynthia E. Widmer, Claudio Silva, Eleonore Z. F. Setz   +3 more
doaj   +1 more source

Hungry for Knowledge: Octopamine Signaling Regulates Hunger‐Enhanced Olfactory Learning

Advanced Science, EarlyView.
Researchers demonstrate that hunger state facilitates both aversive and appetitive olfactory learning. Two distinct octopamine signaling pathways are involved in aversive or appetitive memory formation in the hunger state. And, hunger state also facilitates the formation of both types of memories via an evolutionarily conserved norepinephrine (the ...
Huijuan Zhao, Guiyuan Shi, Ruixue Qin, Yinghao Sun, Wenbo Guo, Ruixia Shi, Minxian Peng, Jingxuan Yang, Jianjian Zhao, Qiuhan Liu, Jun Xiao, Ke Zhang, Qiang Liu, Wenxing Yang, He Liu   +14 more
wiley   +1 more source

AI‐Directed 3D Printing of Hierarchical Polyurethane Foams

Advanced Science, EarlyView.
Digitally guided direct ink writing, combined with AI‐generated design, enables the fabrication of hierarchical polyurethane foams with tunable multiscale porosity. This approach produces architected foams featuring interconnected open‐cell networks and tailored mechanical properties, advancing the development of adaptive, high‐performance materials ...
Dhanush Patil, Jie Tian, Kun Jiang, Clarissa Westover, Sri Vaishnavi Thummalapalli, Arunachalam Ramanathan, Arpita Shome, Natalie Crutchfield, M. Taylor Sobczak, Sean Lee, Hongyue Sun, Elizabeth J. Brisbois, Hitesh Handa, Timothy E. Long, Xianqiao Wang, Kenan Song   +15 more
wiley   +1 more source

High prevalence of Sarcocystis calchasi in racing pigeon flocks in Germany [PDF]

, 2019
The apicomplexan parasite Sarcocystis calchasi (Coccidia: Eimeriorina: Sarcocystidae) is the causative agent of Pigeon Protozoal Encephalitis (PPE) and infects birds of the orders Columbiformes, Piciformes and Psittaciformes.
Failing, Klaus, Gruber, Achim D., Lierz, Michael, Maier-Sam, Kristina, Parmentier, Sylvia L.   +4 more
core   +1 more source

Sustainable Protection of the Lesser Spotted Eagle in Germany by Purchasing Land and Managing the Reproduction Rate

Пернатые хищники и их охрана, 2018
The Lesser Spotted Eagle (Clanga [Aquila] pomarina) is the most endangered German eagle species, and is close to extirpation in the country. Various factors are responsible for the decline of the population, and the shrinking of its distribution to a ...
Bernd-Ulrich Meyburg, Christian Unselt, Sylwester Aftyka, Ugis Bergmanis, Ingo Boerner, Kai Graszynski, Arno Hinz, Monika Kozicka Gradziuk, Torsten Langgemach, Ingrid Lehnigk, Christiane Meyburg, Ilka Simm-Schönholz, Janusz Wójciak   +12 more
doaj  

Cats kill millions of vertebrates in Polish farmland annually

Global Ecology and Conservation, 2019
We estimated the predation rate by free ranging domestic cats on vertebrates in rural areas of central Poland. We performed a door-to-door survey on the number of cats owned and type of food provided and combined results of the survey with the previous ...
Dagny Krauze-Gryz, Jakub Gryz, Michał Żmihorski   +2 more
doaj   +1 more source

Decoding Trap States in Working 2D Perovskite Multi‐Functional Devices

Advanced Science, EarlyView.
Illustration of the photoluminescence spectrum and energy‐level landscape governing trap‐mediated carrier dynamics in 2D F‐PEAI photodetectors. A novel approach capturing dynamic trap occupation and retrapping in devices under operating conditions, directly links defect energetics to carrier transport and enhanced photoresponse in multifunctional ...
Ioannis Leontis, Karl Jonas Riisnaes, Hoi Tung Lam, Rosanna Mastria, Luisa De Marco, Annalisa Coriolano, Steven Hepplestone, Monica Felicia Craciun, Saverio Russo   +8 more
wiley   +1 more source

Will improving wastewater treatment impact shorebirds? Effects of sewage discharges on estuarine invertebrates and birds [PDF]

, 2012
Human communities often discharge wastewaters into estuaries, influencing their organic and pollutant loading, benthic community and trophic structure.
Ait Alla, Alves, Bartels-Hardege, Beukema, Burton, Burton, Campbell, Cardell, Delany, Dias, Dias, Diaz, Esselink, European Community, Gaston, Gaudêncio, Gill, Gillet, Gillet, Goss-Custard, Green, Gunnarsson, Gunnarsson, Jones, Leitão, Matthews, Moreira, Moreira, Mucha, Olivier, Pearson, Pounder, Raven, Reise, Saiz-Salinas, Saiz-Salinas, Savage, Scraps, Smith, Sola, Thrush, Van de Kam, Van Impe, Wear, Weston, Ysebaert   +45 more
core   +1 more source

Genetic Control of Tissue Remodeling by a Non‐Coding SNP in ITGA8 Explains Carotenoid‐Based Color Polymorphism in Marine Mollusks

Advanced Science, EarlyView.
In this study, the orange‐muscle giant abalone (Haliotis gigantea) is used as a model to identify a non‐coding SNP that disrupts the interaction between ITGA8 pre‐mRNA and the splicing factor ILF2, leading to altered ITGA8 splicing. These splicing changes promote carotenoid accumulation in abalone muscle through the regulation of tissue remodeling ...
Xiaohui Wei, Wenzhu Peng, Zekun Huang, Bingye Yang, Yiyu Wu, Minzhen Han, Yi Wang, Bingling Peng, Guosheng Hu, Jiawei Hong, Guijia Liu, Linwei Nie, Yang Gan, Miaoqin Huang, Xuan Luo, Weiwei You, Wen Liu, Caihuan Ke   +17 more
wiley   +1 more source