9 documents found, page 1 of 1
Geolocator-tracking seabird migration and moult reveal large-scale, temperature...
Atkins, Kelly; Bearhop, Stuart; Bodey, Thomas W; Grecian, W James; Hamer, Keith; Pereira, Jorge M.; Meinertzhagen, Hannah; Mitchell, Chris; Morgan, GregRationale: By combining precision satellite-tracking with blood sampling, seabirds can be used to validate marine carbon and nitrogen isoscapes, but it is unclear whether a comparable approach using low-precision light-level geolocators (GLS) and feather sampling can be similarly effective. Methods: Here we used GLS to identify wintering areas of northern gannets (Morus bassanus) and sampled winter grown feathe...
Inter-colony and inter-annual variation in discard use by albatross chicks reve...
Kuepfer, Amanda; Catry, Paulo; Bearhop, Stuart; Sherley, Richard; Bell, Olivia; Newton, Jason; Brickle, Paul; Arkhipkin, Alexander; Votier, StephenEffective marine ecosystem monitoring is critical for sustainable management. Monitoring seabird diets can convey important information on ecosystem health and seabird–fishery interactions. The diet of breeding black-browed albatross (Thalassarche melanophris) has previously been assessed using stomach content analysis (SCA) or stable isotope analysis (SIA), but not both methods together. Combining dietary samp...
Trophic relationships between the crab Libinia ferreirae and its symbionts
Lemos Gonçalves, Geslaine Rafaela [UNESP]; Melo dos Santos, Pedro Vinícius [UNESP]; Costa, Vladimir Eliodoro [UNESP]Made available in DSpace on 2022-04-28T19:44:42Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-10-01; Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis; Instituto Chico Mendes de Conservação da Biodiversidade; Symbioses are ubiquitous in the animal kingdom. However, in most cases, the role of each member is relatively fixed, and it is rare for the same species to exhibit different...
A deepening understanding of animal culture suggests lessons for conservation
Brakes, Philippa; Carroll, Emma L; Dall, Sasha R X; Keith, Sally Anne; McGregor, Peter; Mesnick, Sarah L.; Noad, Michael; Rendell, Luke EdwardA key goal of conservation is to protect biodiversity by supporting the long-term persistence of viable, natural populations of wild species. Conservation practice has long been guided by genetic, ecological and demographic indicators of risk. Emerging evidence of animal culture across diverse taxa and its role as a driver of evolutionary diversification, population structure and demographic processes may be es...
Migrant birds and mammals live faster than residents
Soriano-Redondo, Andrea; Gutiérrez, Jorge S.; Hodgson, Dave; Bearhop, StuartBillions of vertebrates migrate to and from their breeding grounds annually, exhibiting astonishing feats of endurance. Many such movements are energetically costly yet there is little consensus on whether or how such costs might influence schedules of survival and reproduction in migratory animals. Here we provide a global analysis of associations between migratory behaviour and vertebrate life histories. Afte...
Provenance does matter: Links between winter trophic segregation and the migrat...
Catry, Paulo; Campos, Ana R.; Granadeiro, José Pedro; Neto, Júlio M.; Ramos, Jaime; Newton, Jason; Bearhop, StuartAmongst migratory species, it is common to find individuals from different populations or geographical origins sharing staging or wintering areas. Given their differing life histories, ecological theory would predict that the different groups of individuals should exhibit some level of niche segregation. This has rarely been investigated because of the difficulty in assigning migrating individuals to breeding a...
How do Robins Erithacus rubecula resident in Iberia respond to seasonal floodin...
Campos, Ana R.; Catry, Paulo; Tenreiro, Paulo; Neto, Júlio M.; Pereira, António C.; Brito, Rui; Cardoso, Helder; Ramos, Jaime; Bearhop, StuartInexistente
Movements, winter distribution and activity patterns of Falkland and brown skua...
Phillips, Richard A.; Catry, Paulo; Silk, Janet R. D.; Bearhop, Stuart; McGill, Rona A R; Afanasyev, Vsevolod; Strange, Ian J.In the first published study of the wintering ranges and activity patterns of skuas from any colony, we combined tracking (geolocator) and stable isotope analysis in a comparison of migration behaviour of brown skuas Catharacta lonnbergi and Falkland skuas C. antarctica from South Georgia and the Falkland Islands, respectively. Brown skuas, particularly failed breeders, departed and returned to the colony much ...
Sex differences in settlement behaviour and condition of chiffchaffs Phylloscop...
Catry, Paulo; Bearhop, Stuart; Lecoq, MiguelIn passerine birds, males are generally larger and dominant over females. In line with the dominance theory, in all known differential migrant passerines, females migrate further than males. However, there are alternative explanations to the dominance hypothesis, including the specialisation hypothesis, predicting that females should do better than males in habitats and/or regions to which they are specially ad...