Results 21 to 30 of about 6,123 (278)

Life-history traits of the giant squid Architeuthis dux revealed from stable isotope signatures recorded in beaks [PDF]

, 2010
We thank Yves Cherel and two anonymous referees for their comments and suggestions, which improved the paper substantially. The study was financed by an award (DE-FC09-96-SR18546) from the US Department of Energy to the University of Georgia Savannah ...
Ángel Guerra, Gonzalez, Angel F., Alvarez-Lloret, Pedro, Ángel F. González, Chris S. Romanek, Graham J. Pierce, Pierce, Graham J., Alejandro B. Rodríguez-Navarro, Pedro Álvarez-Lloret, Guerra, Angel, Rodriguez-Navarro, Alejandro B., Romanek, Chris S., Pierce, Graham John   +12 more
core   +1 more source

Horns, Scales, Beaks: The Versatility of Keratin

CHIMIA, 2022
The structures of alpha- and beta-keratins and their roles in nature are introduced, along with how demand for keratin-based products impacts on pangolin and rhinoceros conservation.
Catherine E. Housecroft
doaj   +1 more source

Molecular Shaping of the Beak [PDF]

Science, 2004
Beak shape is a classic example of evolutionary diversification. Beak development in chicken and duck was used to examine morphological variations among avian species. There is only one proliferative zone in the frontonasal mass of chickens, but two in ducks. These growth zones are associated with bone morphogenetic protein 4 (BMP4) activity.
Ping, Wu, Ting-Xin, Jiang, Sanong, Suksaweang, Randall Bruce, Widelitz, Cheng-Ming, Chuong   +4 more
openaire   +2 more sources

Stock identification of neon flying squid (Ommastrephes bartramii) in the North Pacific Ocean on the basis of beak and statolith morphology

Scientia Marina, 2014
Cephalopods are becoming increasingly important in global fisheries as a result of increased landings and are playing an important ecological role in the trophic dynamics of marine ecosystems.
Zhou Fang, Bilin Liu, Jianghua Li, Hang Su, Xinjun Chen   +4 more
doaj   +1 more source

Allometry reveals trade-offs between Bergmann’s and Allen’s rules, and different avian adaptive strategies for thermoregulation

Nature Communications, 2023
Bergmann’s and Allen’s rules are speculated to describe alternative strategies of thermal adaptation. Here, Frӧhlich et al. explore global variation across avian species to show that the way in which relative length of beaks and tarsi co-vary with ...
Arkadiusz Frӧhlich, Dorota Kotowska, Rafał Martyka, Matthew R. E. Symonds   +3 more
doaj   +1 more source

Can we use beaks for DNA analyses and mercury contamination assessment? [PDF]

, 2016
International audienceCephalopod beaks found in the diet of predators have been amajor source of scientific information. In this study,we evaluated the usefulness of DNA and contaminants analysis (total mercury — T-Hg) in cephalopod beaks inorder to ...
Pardal, Miguel, Trathan, Phil N., Ferreira, Sónia, Santos, Nuno, Mieiro, Cláudia Leopoldina, Cherel, Yves, Lourenço, Sílvia, Trathan, Philip N., Steinke, Dirk, Xavier, José Carlos, Tavares, Silvia, Martinho, Filipe, Seco, Jose, Pereira, Eduarda   +13 more
core   +1 more source

Age estimation of the Southern Ocean squid Moroteuthopsis longimana using beaks collected from predators' diet: number and increment widths in the rostrum sagittal section of the lower beak

, 2022
In this work we used upper and lower beaks of Moroteuthopsis longimana collected from the diet of Antarctic toothfish Dissostichus mawsoni from the Pacific (Ross and Amundsen Seas) and Atlantic (South Sandwich Islands) sectors of the Southern Ocean to ...
Perales-Raya, Catalina, Piatkowski, Uwe, Xavier, José C., Bartolomé, Aurora, Queirós, José P.   +4 more
core   +1 more source

First Integrative Morphological and Genetic Characterization of Tremoctopus violaceussensu stricto in the Mediterranean Sea

Animals, 2021
An integrative approach based on morphological and genetic analyses was undertaken for the first time to confirm the species identification of Mediterranean samples belonging to the genus Tremoctopus.
Blondine Agus, Pierluigi Carbonara, Riccardo Melis, Rita Cannas, Laura Carugati, Jacopo Cera, Marilena Donnaloia, Antonello Mulas, Antonio Pais, Stefano Ruiu, Giuseppe Vinci, Danila Cuccu   +11 more
doaj   +1 more source

Detection of Novel Goose Parvovirus Disease Associated with Short Beak and Dwarfism Syndrome in Commercial Ducks

Animals, 2020
Derzsy’s disease causes disastrous losses in domestic waterfowl farms. A genetically variant strain of Muscovy duck parvovirus (MDPV) and goose parvovirus (GPV) was named novel goose parvovirus (NGPV), which causes characteristic syndrome in young ...
Mohamed A. Soliman, Ahmed M. Erfan, Mohamed Samy, Osama Mahana, Soad A. Nasef   +4 more
doaj   +1 more source

Understanding How Infrared Beak Treatment Affects the Beak Tissue and the Healing Response of Brown and White Feathered Layer Pullets

Animals, 2019
Infrared beak treatment has less of a negative impact on laying hen welfare compared to other methods of beak treatment; however, it is still not fully understood how infrared beak treatment affects the beak tissue during the first few days post ...
Sarah Struthers, Ashish Gupta, Susantha Gomis, Eugenia Herwig, Karen Schwean-Lardner   +4 more
doaj   +1 more source