Results 81 to 90 of about 270,110 (315)

Adult Sex Ratio as a Demographic Feedback Linking Mating Systems, Parental Care, and Evolution

Advanced Science, EarlyView.
Breeding systems are some of the most diverse social behavior, and our team is investigation the evolutionary causes of this diversity. This review summarises our research carried out at the University of Bath. We argue that demographic components of wild populations, especially the adult sex ratio, plays a key role driving breeding system variation ...
Tamás Székely, Oscar G. Miranda
wiley   +1 more source

EVALUATING EXTENSIVE SHEEP FARMING SYSTEMS [PDF]

Data from each of 5 commercial, extensive sheep farms in Cumbria, UK were used as parameters in a linear program (LP) representing labour and grazing management in such farming systems.
Dwyer, Cathy M., Goddard, Pete, Kupiec-Teahan, Beata, Milne, Catherine E., Morgan-Davies, Claire, Phillips, Kate, Ringrose, Sian, Stott, Alistair W., Vosough Ahmadi, Bouda, Waterhouse, Tony   +9 more
core   +1 more source

Sertoli Cell‐Derived Extracellular Vesicles Orchestrate Cadmium‐Induced Testicular Inflammation and Fibrosis

Advanced Science, EarlyView.
Environmental cadmium exposure disrupts testicular homeostasis through a novel intercellular communication axis. Stressed Sertoli cells release extracellular vesicles carrying damage‐associated molecular patterns and mitochondrial fragments, which activate macrophages via TLR4/NF‐κB signaling.
Jianfeng Ma, Mailin Gan, Shuang Liang, Siyu Chen, Ziling Hao, Yiting Yang, Jiawei Lu, Qihang Wu, Yuqian Shi, Lijun Sun, Jiaxin Li, Saihao Wang, Yan Wang, Xiaofeng Zhou, Lei Chen, Ye Zhao, Li Zhu, Linyuan Shen   +17 more
wiley   +1 more source

Spatial patterns of influenza A virus spread across compartments in commercial swine farms in the United States

Emerging Microbes and Infections
Multiple genetic variants of H1 and H3 influenza A viruses (IAVs) circulate concurrently in US swine farms. Understanding the spatial transmission patterns of IAVs among these farms is crucial for developing effective control strategies and mitigating ...
Bijaya Hatuwal, Varun Goel, Thomas J. Deliberto, Jim Lowe, Michael Emch, Richard J. Webby, Xiu-Feng Wan   +6 more
doaj   +1 more source

A structural ricardian analysis of climate change impacts and adaptations in African agriculture [PDF]

This paper develops a Structural Ricardian model to measure climate change impacts that explicitly models the choice of farm type in African agriculture.
Mendelsohn, Robert, Seo, S. Niggol
core  

The Faraday Scalpel: Electrochemical Nerve Lesioning Mechanisms Studied in Invertebrate Models

Advanced Science, EarlyView.
Direct‐current produces nerve lesioning through discrete electrochemical reactions. Using hypoxia‐sensitive locust nerves and hypoxia‐tolerant leech nerves, we map three injury pathways: cathodic oxygen reduction, cathodic alkalization, and anodic chloride oxidation. These findings establish electrochemical lesioning—the “Faraday Scalpel”—as a precise,
Petra Ondráčková, Jan Švec, Marie Jakešová, Jiří Ehlich, Imrich Gablech, Eric Daniel Głowacki   +5 more
wiley   +1 more source

Family Dairy Farms in the Northern French Alps: Persistence and Adaptation in a Changing World

Mountain Research and Development, 2015
The maintenance of family farms in mountain areas constitutes a serious challenge in the context of globalization. European mountain agriculture faces significant natural constraints and cannot follow the same development path as agriculture in the ...
Sophie Madelrieux, Médulline Terrier, Dominique Borg, Laurent Dobremez   +3 more
doaj   +1 more source

Multi‐Omics Insights Into the Mechanisms of Early Muscle Fiber Difference and Transformation Between Lean‐Type and Chinese Indigenous Pigs

Advanced Science, EarlyView.
Multi‐omics analyses uncover breed‐specific cis‐regulatory landscapes and higher‐order chromatin architectural differences that underlie early postnatal muscle fiber divergence in pigs. A super‐enhancer upstream of PPP3CB recruits MEF2C to activate PPP3CB transcription, while the PPP3CB–MEF2C positive feedback loop promotes oxidative muscle fiber ...
Shuailong Zheng, Hainan Wu, Min Liu, Kunpeng Wu, Shuntao Huang, Zulfiqar Ahmed, Lenox Pius, Mengjin Zhu, Dequan Xu   +8 more
wiley   +1 more source

Fish farming for diversifying cocoa production in Côte d’Ivoire: Typology of practices

Aquaculture Reports
Fish farming in Côte d’Ivoire has been promoted as a diversification strategy for cocoa producers, yet the sector exhibits significant heterogeneity in farming practices, which remains poorly documented.
Antoine K. Kouadio, Elodie Pepey, Lucas Fertin, Henri-Joel K. Niamien, Seri Brou, Charles K. Boussou, Simon Pouil   +6 more
doaj   +1 more source

Carbon footprint of dairy goat production systems: A comparison of three contrasting grazing levels in the Sierra de Grazalema Natural Park (Southern Spain) [PDF]

, 2019
The main objective of this study was to analyze the carbon footprint (CF) of grazing dairy goat systems in a natural park according to their grazing level.
Batalla, Inmaculada, Gutiérrez Peña, Rosario, Mancilla Leytón, Juan Manuel, Mena Guerrero, Yolanda   +3 more
core   +3 more sources