We report the first successful use of miniature Global Positioning System loggers to track ocean‐going behaviour a c . 400 g seabird, Manx Shearwater Puffinus puffinus Breeding birds were tracked over three field seasons during incubation and chick‐rearing periods on their foraging excursions from large colony Skomer Island, Pembrokeshire, UK. Foraging effort was concentrated in Irish Sea. Likely areas identified north, more diffusely west colony. No recorded significantly south colony,...

Generalist predators may vary their diet and use of habitat according to both internal state (e.g. breeding stage) external weather) factors. Lesser black-backed gulls Larus fuscus (Linnaeus 1758) are dietary generalists, foraging in terrestrial marine habitats during breeding. We investigate what affects the gulls' propensity forage at sea or on land. assess importance Baltic Sea (sub. sp. L. f. fuscus), looking especially agricultural fields.Through GPS tracking 19 individuals across 3...

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 475:277-289 (2013) - DOI: https://doi.org/10.3354/meps10125 Foraging behaviour of common murres in Baltic Sea, recorded by simultaneous attachment GPS and time-depth recorder devices Thomas J. Evans1,*, Martina Kadin2, Olof Olsson2, Susanne Åkesson1 1Centre for Animal Movement Research, Department Biology,...

Biologging devices are providing detailed insights into the behaviour and movement of animals in their natural environments. It is usually assumed that this method gathering data does not impact on observed. However, potential negative effects birds have rarely been investigated before field‐based studies initiated. Seabirds which both fly use pursuit diving may be particularly sensitive to increases drag load resulting from carrying biologging devices. We studied chick‐rearing adult common...

For studies of how birds control their altitude, seabirds are particular interest because they forage offshore where the visual environment can be simply modelled by a flat world textured waves then generating only ventral cues. This study suggests that optic flow, i.e. rate at which sea moves across eye's retina, explain gulls' altitude over seas. In particular, new flight model includes both energy and optical invariants helps trajectories during takeoff cruising flight. A linear mixed...

Europe has set ambitious green energy targets, to which offshore renewable developments (ORDs) will make a significant contribution. Governments are legally required deliver ORDs sustainably; however, they may have detrimental impacts on wildlife, especially those already experiencing declines due climate change. Population viability analysis (PVA) is the standard method for forecasting population change in ORD assessments, but PVAs do not currently account effects. We quantified effects...

Abstract Conflicts of interest between resource extraction and conservation are widespread, negotiating such conflicts, or trade‐offs, is a key issue for ecosystem managers. One trade‐off competition fisheries marine top predators. Managing this has so far been difficult due to lack knowledge regarding the amount distribution prey required by Here, we develop framework that can be used address gap: bio‐energetic model linking predator breeding biology foraging ecology with forage fish...

Many flying animals, like birds feeding their young, make commuting flights between a central place and foraging areas in the surroundings. Such (CPF) represents special case of theory. We use simple geometry trigonometry to analyse CPF flight performance (a round-trip cycle outward from inward back along reverse track) relation wind. In addition considering situation constant uniform wind field, we take into account two factors that are likely apply many situations under natural conditions:...

Marine megafauna exposed to fisheries bycatch belong some of the most threatened taxonomic groups and include apex mesopredators that contribute ecosystem regulation. Fisheries is a major threat conservation albatrosses, large petrels other pelagic seabirds. Using data sourced from electronic monitoring system, we assessed effects time-of-day relative depth fishing on seabird target species catch rates for Pacific Ocean longline fishery targets albacore tuna with an apparently high albatross...

Capsule: Foraging behaviour in the Razorbill Alca torda during breeding was similar to that found elsewhere, aside from dive shape.Aims: To investigate foraging of Razorbills season at largest colony central Baltic Sea.Methods: A combination global positioning system (GPS) and time-depth recorder (TDR) devices were used on island Stora Karlsö, Sea, chick-rearing period.Results: Five GPS tracks nine TDR logs retrieved 12 Razorbills, 7399 dives analysed. foraged south southwest colony. Maximum...

Habitat preferences and foraging strategies affect population-level space use are therefore crucial to understanding population change implementing spatial conservation management actions. We investigated the breeding season habitat preference site fidelity of under-studied threatened, Baltic Sea Caspian Terns (Hydroprogne caspia). Using GPS devices, we tracked 20 adult individuals at two colonies, in Sweden Finland, from late incubation through chick-rearing. Analyzing movements during this...

<h3>Background</h3> The cytokines interleukin 17A and 22 are known to be important in host defence against Gram-negative infection. However, their role the innate immune response pneumococci remains poorly understood. We aimed investigate of these an animal model pneumococcal <h3>Methods </h3> Wild type (WT), IL-17 receptor A-/- (IL17RAKO) IL-22-/- C57Bl/6 mice were infected intranasally with serotype 4 (TIGR4) 3 (SRL1) pneumococci. Neutrophils for <i>in vitro</i> experiments obtained by...

<h3>Introduction and Objectives</h3> <i>Pseudomonas aeruginosa</i> (PA) is an important respiratory pathogen resulting in damaging neutrophilic responses. The cytokine IL-17 orchestrating such inflammation. Cells producing IL-17, as Th17 cells, have been shown to be host defense chronic pulmonary PA infection. We set out determine the origin role of a model <h3>Methods</h3> Experimental infection mice was produced by intra-tracheal instillation mucoid strains embedded agar-beads; sterile...