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https://www.readbyqxmd.com/read/28211483/colonisation-in-social-species-the-importance-of-breeding-experience-for-dispersal-in-overcoming-information-barriers
#1
A Payo-Payo, M Genovart, A Sanz-Aguilar, J L Greño, M García-Tarrasón, A Bertolero, J Piccardo, D Oro
Studying colonisation is crucial to understand metapopulations, evolutionary ecology and species resilience to global change. Unfortunately, few empirical data are available because field monitoring that includes empty patches at large spatiotemporal scales is required. We examine the colonisation dynamics of a long-lived seabird over 34 years in the western Mediterranean by comparing population and individual data from both source colony and the newly-formed colonies. Since social information is not available, we hypothesize that colonisation should follow particular dispersal dynamics and personal information must be crucial in decision making...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28202814/early-mortality-saves-energy-estimating-the-energetic-cost-of-excess-offspring-in-a-seabird
#2
Oscar Vedder, He Zhang, Sandra Bouwhuis
Offspring are often produced in excess as insurance against stochastic events or unpredictable resources. This strategy may result in high early-life mortality, yet age-specific mortality before offspring independence and its associated costs have rarely been quantified. In this study, we modelled age-specific survival from hatching to fledging using 24 years of data on hatching order (HO), growth and age of mortality of more than 15 000 common tern (Sterna hirundo) chicks. We found that mortality peaked directly after hatching, after which it declined rapidly...
February 22, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28202811/small-birds-big-effects-the-little-auk-alle-alle-transforms-high-arctic-ecosystems
#3
Ivan González-Bergonzoni, Kasper L Johansen, Anders Mosbech, Frank Landkildehus, Erik Jeppesen, Thomas A Davidson
In some arctic areas, marine-derived nutrients (MDN) resulting from fish migrations fuel freshwater and terrestrial ecosystems, increasing primary production and biodiversity. Less is known, however, about the role of seabird-MDN in shaping ecosystems. Here, we examine how the most abundant seabird in the North Atlantic, the little auk (Alle alle), alters freshwater and terrestrial ecosystems around the North Water Polynya (NOW) in Greenland. We compare stable isotope ratios (δ(15)N and δ(13)C) of freshwater and terrestrial biota, terrestrial vegetation indices and physical-chemical properties, productivity and community structure of fresh waters in catchments with and without little auk colonies...
February 22, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28202269/trace-elements-in-fragments-of-fishing-net-and-other-filamentous-plastic-litter-from-two-beaches-in-sw-england
#4
Andrew Turner
Filamentous plastic litter collected from two beaches in south west England has been characterized by FTIR and XRF. The majority of samples were constructed of polyethylene and consisted of twisted or braided strands of a variety of colours that appeared to be derived from commercial fishing nets. A number of different elements were detected among the samples but, from an environmental perspective, the regular occurrence of Cr and Pb and the occasional or isolated occurrence of Br, Cd and Se were of greatest concern...
February 12, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28166941/keeping-it-regular-development-of-thermoregulation-in-four-tropical-seabird-species
#5
Lorinda A Hart, Colleen T Downs, Mark Brown
The thermoregulatory capacity of a species can determine which climatic niche it occupies. Its development in avian chicks is influenced by numerous factors. Furthermore, it is suggested that altricial chicks develop their thermoregulatory capacity post-hatching, while precocial chicks develop aspects of this in the egg. We investigated the development of thermoregulation of four co-occurring seabird species in the Seychelles; namely white, ground-nesting white-tailed tropicbirds (Phaethon lepturus) and tree-nesting fairy terns (Gygis alba); and dark plumaged, tree-nesting lesser noddies (Anous tenuirostris) and ground- and tree-nesting brown noddies (A...
February 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28160980/ingestion-of-marine-debris-by-the-white-chinned-petrel-procellaria-aequinoctialis-is-it-increasing-over-time-off-southern-brazil
#6
Maria V Petry, Victória R F Benemann
Seabirds are amongst the most affected organisms by plastic pollution worldwide. Ingestion of marine debris has been reported in at least 122 species, and owing to the increasing global production and persistence of these anthropogenic materials within the marine environment, it is expected to be a growing problem to the marine fauna. Here we report evidence of an increasing frequency in marine debris ingestion and a decrease in the amount of plastic pellets ingested by White-chinned Petrels attending south Brazilian waters during the last three decades...
February 1, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28160979/plastic-in-cassin-s-auklets-ptychoramphus-aleuticus-from-the-2014-stranding-on-the-northeast-pacific-coast
#7
Hannah P Floren, Gary W Shugart
Oceanic plastic debris found in the digestive tracts of seabirds includes industrial plastic pellets and post-consumer user plastics. We examined whether the amount and type of plastic ingested by Cassin's Auklets (Ptychoramphus aleuticus) is changing by surveying the stomach contents of 171 Cassin's Auklets stranded along the Washington and Oregon coasts in 2014. We found that 41.5% of the birds contained plastic in their ventriculi, similar to values from the North Subarctic Pacific reported in the 1980s...
February 2, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28160075/redescription-of-babesia-ardeae-toumanoff-1940-a-parasite-of-ardeidae-including-molecular-characterization
#8
J -M Chavatte, C Okumura, I Landau
Among the actual 16 identified and thought to be valid avian piroplasm species, certain parasites are only known from their original description with no subsequent report. Babesia ardeae Toumanoff, 1940 is one of them. It was described from a single sacrificed gray heron (Ardea cinerea) from Vietnam and had never been reported since this date despite inhabiting a very common avian host. The present study reports the accidental rediscovery of B. ardeae from an injured wild gray heron rescued in Singapore. This report confirms the existence of this parasite species in the gray heron from Southeast Asia, highlights the similarities with the original description, provides additional morphologic and morphometric data, and designates neotype material for B...
February 3, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28159398/metals-and-metalloids-in-little-penguin-eudyptula-minor-prey-blood-and-faeces
#9
Annett Finger, Jennifer L Lavers, Peter Dann, Nicole D Kowalczyk, Carol Scarpaci, Dayanthi Nugegoda, John D Orbell
Piscivorous species like the Little Penguin (Eudyptula minor) are particularly at risk of being negatively impacted by pollution due to their heightened exposure through aquatic food chains. Therefore, determining the concentration of heavy metals in the fish prey of seabirds is an essential component of assessing such risk. In this study, we report on arsenic, cadmium, mercury, lead and selenium concentrations in three fish species, which are known to comprise a substantial part of the diet of Little Penguins at the urban colony of St Kilda, Melbourne, Australia...
January 31, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28159334/inhalation-route-of-edc-exposure-in-seabirds-larus-argentatus-from-the-southern-baltic
#10
Lucyna Falkowska, Agnieszka Grajewska, Marta Staniszewska, Iga Nehring, Emilia Szumiło-Pilarska, Dominika Saniewska
Despite the presence of endocrine disrupting mercury, PAHs, alkylphenols and bisphenol A in inhaled air, scientific literature lacks information on their penetration into the lungs. Large lung capacity in birds makes this route of penetration more significant than in other animals. The studies were conducted on lungs of herring gulls found in the Gulf of Gdansk area. The results were juxtaposed with other tissues, including the intestines, which reflect the main, alimentary penetration route of harmful substances into the organism...
January 31, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28151557/a-global-review-of-seabird-mortality-caused-by-land-based-artificial-lights
#11
REVIEW
Airam Rodríguez, Nick D Holmes, Peter G Ryan, Kerry-Jayne Wilson, Lucie Faulquier, Yovana Murillo, André F Raine, Jay Penniman, Verónica Neves, Beneharo Rodríguez, Juan J Negro, André Chiaradia, Peter Dann, Tracy Anderson, Benjamin Metzger, Masaki Shirai, Lorna Deppe, Jennifer Wheeler, Peter Hodum, Catia Gouveia, Vanda Carmo, Gilberto P Carreira, Luis Delgado-Alburqueque, Carlos Guerra-Correa, François-Xavier Couzi, Marc Travers, Matthieu Le Corre
Artificial lights at night cause high mortality of seabirds, one of the most endangered groups of birds globally. Fledglings of burrow-nesting seabirds, and to a lesser extent adults, are grounded by lights when they fly at night. We review the current state of knowledge of light attraction, identify information gaps and propose measures to address the problem. Although other avian families such as Alcidae and Anatidae can be involved, the most affected seabirds are petrels and shearwaters: at least 56 species, more than one-third of them (24) threatened, are grounded by lights...
February 2, 2017: Conservation Biology: the Journal of the Society for Conservation Biology
https://www.readbyqxmd.com/read/28140497/invasive-rodents-have-multiple-indirect-effects-on-seabird-island-invertebrate-food-web-structure
#12
Joshua Thoresen, David Towns, Sebastian Leuzinger, Mel Durrett, Christa P H Mulder, David A Wardle
Burrowing seabirds that nest on islands transfer nutrients from the sea, disturb the soil through burrowing, damage tree foliage when landing, and thereby modify the surface litter. However, seabirds are in decline worldwide, as are their community- and ecosystem-level impacts, primarily due to invasive predatory mammals. The direct and indirect effects of seabird decline on communities and ecosystems are inherently complex. Here we employed network analysis, as a means of simplifying ecological complexity, to better understand the effects seabird loss may have on island invertebrate communities...
January 31, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28122001/modeling-nonresident-seabird-foraging-distributions-to-inform-ocean-zoning-in-central-california
#13
Anna J Studwell, Ellen Hines, Meredith L Elliott, Julie Howar, Barbara Holzman, Nadav Nur, Jaime Jahncke
Seabird aggregations at sea have been shown to be associated with concentrations of prey. Previous research identified Central California as a highly used foraging area for seabirds, with locally breeding seabirds foraging close to their colonies on Southeast Farallon Island. Herein, we focus on nonresident (i.e. non-locally breeding) seabird species off of Central California. We hypothesized that high-use foraging areas for nonresident seabirds would be influenced by oceanographic and bathymetric factors and that spatial and temporal distributions would be similar within planktivorous and generalist foraging guilds but would differ between them...
2017: PloS One
https://www.readbyqxmd.com/read/28114433/correction-mapping-seabird-sensitivity-to-offshore-wind-farms
#14
Gareth Bradbury, Mark Trinder, Bob Furness, Alex N Banks, Richard W G Caldow, Duncan Hume
[This corrects the article DOI: 10.1371/journal.pone.0106366.].
2017: PloS One
https://www.readbyqxmd.com/read/28078785/risks-of-ocean-acidification-in-the-california-current-food-web-and-fisheries-ecosystem-model-projections
#15
Kristin N Marshall, Isaac C Kaplan, Emma E Hodgson, Albert Hermann, D Shallin Busch, Paul McElhany, Timothy E Essington, Chris J Harvey, Elizabeth A Fulton
The benefits and ecosystem services that humans derive from the oceans are threatened by numerous global change stressors, one of which is ocean acidification. Here, we describe the effects of ocean acidification on an upwelling system that already experiences inherently low pH conditions, the California Current. We used an end-to-end ecosystem model (Atlantis), forced by downscaled global climate models and informed by a meta-analysis of the pH sensitivities of local taxa, to investigate the direct and indirect effects of future pH on biomass and fisheries revenues...
January 12, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28077776/odour-based-discrimination-of-similarity-at-the-major-histocompatibility-complex-in-birds
#16
Sarah Leclaire, Maria Strandh, Jérôme Mardon, Helena Westerdahl, Francesco Bonadonna
Many animals are known to preferentially mate with partners that are dissimilar at the major histocompatibility complex (MHC) in order to maximize the antigen binding repertoire (or disease resistance) in their offspring. Although several mammals, fish or lizards use odour cues to assess MHC similarity with potential partners, the ability of birds to assess MHC similarity using olfactory cues has not yet been explored. Here we used a behavioural binary choice test and high-throughput-sequencing of MHC class IIB to determine whether blue petrels can discriminate MHC similarity based on odour cues alone...
January 11, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28076351/ultra-fine-scale-spatially-integrated-mapping-of-habitat-and-occupancy-using-structure-from-motion
#17
Philip McDowall, Heather J Lynch
Organisms respond to and often simultaneously modify their environment. While these interactions are apparent at the landscape extent, the driving mechanisms often occur at very fine spatial scales. Structure-from-Motion (SfM), a computer vision technique, allows the simultaneous mapping of organisms and fine scale habitat, and will greatly improve our understanding of habitat suitability, ecophysiology, and the bi-directional relationship between geomorphology and habitat use. SfM can be used to create high-resolution (centimeter-scale) three-dimensional (3D) habitat models at low cost...
2017: PloS One
https://www.readbyqxmd.com/read/28070279/legacy-or-colonization-posteruption-establishment-of-peregrine-falcons-falco-peregrinus-on-a-volcanically-active-subarctic-island
#18
Sarah A Sonsthagen, Jeffrey C Williams, Gary S Drew, Clayton M White, George K Sage, Sandra L Talbot
How populations and communities reassemble following disturbances are affected by a number of factors, with the arrival order of founding populations often having a profound influence on later populations and community structure. Kasatochi Island is a small volcano located in the central Aleutian archipelago that erupted violently August 8, 2008, sterilizing the island of avian biodiversity. Prior to the eruption, Kasatochi was the center of abundance for breeding seabirds in the central Aleutian Islands and supported several breeding pairs of peregrine falcons (Falco peregrinus)...
January 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28069276/levels-of-ingested-debris-vary-across-species-in-canadian-arctic-seabirds
#19
Florence E Poon, Jennifer F Provencher, Mark L Mallory, Birgit M Braune, Paul A Smith
Plastic debris has become a major pollutant in the world's oceans and is found in many seabird species from low to high latitudes. Here we compare levels of plastic ingestion from two surface feeders, northern fulmars (Fulmarus glacialis) and black-legged kittiwakes (Rissa tridactyla), and two pursuit diving species, thick-billed murres (Uria lomvia) and black guillemots (Cepphus grylle) in the Canadian high Arctic. This is the first report quantifying plastic ingestion in kittiwakes in this region, and as predicted, kittiwakes and fulmars had higher frequency of plastic ingestion than guillemots and murres...
January 7, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28064411/the-tick-acari-ixodidae-fauna-of-herald-s-beacon-islet-australia
#20
Mackenzie L Kwak, Kate Mintram
A rare opportunity to travel to Herald's Beacon Islet with permission from the Australian government to collect ticks allowed for a survey of the tick fauna of the island to be undertaken for the first time. The avian fauna of the island, which serve as hosts, was also recorded and includes one new species record for the island. The seabird soft tick Ornithodoros capensis Neumann and the seabird hard tick Amblyomma loculosum Neumann were found to be present on the island. Images of the ticks present on the island are presented along with morphological characters for their identification...
January 2017: Experimental & Applied Acarology
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