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Dive Depth and Plumage Air in Wettable Birds: the Extraordinary Case of the Imperial Cormorant
MARINE ECOLOGY PROGRESS SERIES Vol. 334: 299–310, 2007 Published March 26 Mar Ecol Prog Ser Dive depth and plumage air in wettable birds: the extraordinary case of the imperial cormorant Flavio Quintana1,*, Rory P. Wilson2, Pablo Yorio1 1Centro Nacional Patagónico, CONICET (9120) Puerto Madryn, Chubut and Wildlife Conservation Society, 2300 Southern Boulevard, Bronx, New York 10460, USA 2Biological Sciences, Institute of Environmental Sustainability, University of Wales, Swansea SA2 8PP, UK ABSTRACT: Cormorants are considered to be remarkably efficient divers and hunters. In part, this is due to their wettable plumage with little associated air, which allows them to dive with fewer ener- getic costs associated with buoyancy from air in the feathers. The literature attributes particularly exceptional diving capabilities to cormorants of the ‘blue-eyed’ taxon. We studied the diving be- haviour of 14 male imperial cormorants Phalacrocorax atriceps (included in the blue-eyed taxon) in Patagonia, Argentina, and found that this species did indeed dive deeper, and for longer, than most other non-blue-eyed cormorant species. This species also exhibited longer dive durations for any depth as well as longer recovery periods at the surface for particular dive durations. We propose that this, coupled with atypically long foraging durations at sea in cold water, suggests that cormorants of the blue-eyed complex have a plumage with a substantial layer of insulating air. This is given cre- dence by a simple model. High volumes of plumage air lead to unusually high power requirements during foraging in shallow, warmer waters, which are conditions that tend to favour wettable plumage. -
Review: the Energetic Value of Zooplankton and Nekton Species of the Southern Ocean
Marine Biology (2018) 165:129 https://doi.org/10.1007/s00227-018-3386-z REVIEW, CONCEPT, AND SYNTHESIS Review: the energetic value of zooplankton and nekton species of the Southern Ocean Fokje L. Schaafsma1 · Yves Cherel2 · Hauke Flores3 · Jan Andries van Franeker1 · Mary‑Anne Lea4 · Ben Raymond5,4,6 · Anton P. van de Putte7 Received: 8 March 2018 / Accepted: 5 July 2018 / Published online: 18 July 2018 © The Author(s) 2018 Abstract Understanding the energy fux through food webs is important for estimating the capacity of marine ecosystems to support stocks of living resources. The energy density of species involved in trophic energy transfer has been measured in a large number of small studies, scattered over a 40-year publication record. Here, we reviewed energy density records of Southern Ocean zooplankton, nekton and several benthic taxa, including previously unpublished data. Comparing measured taxa, energy densities were highest in myctophid fshes (ranging from 17.1 to 39.3 kJ g−1 DW), intermediate in crustaceans (7.1 to 25.3 kJ g−1 DW), squid (16.2 to 24.0 kJ g−1 DW) and other fsh families (14.8 to 29.9 kJ g−1 DW), and lowest in jelly fsh (10.8 to 18.0 kJ g−1 DW), polychaetes (9.2 to 14.2 kJ g−1 DW) and chaetognaths (5.0–11.7 kJ g−1 DW). Data reveals diferences in energy density within and between species related to size, age and other life cycle parameters. Important taxa in Antarctic food webs, such as copepods, squid and small euphausiids, remain under-sampled. -
Age and Growth of Brauer's Lanternfish Gymnoscopelus Braueri and Rhombic Lanternfish Krefftichthys Anderssoni (Family Myctophidae) in the Scotia Sea, Southern Ocean
Received: 22 July 2019 Accepted: 14 November 2019 DOI: 10.1111/jfb.14206 REGULAR PAPER FISH Age and growth of Brauer's lanternfish Gymnoscopelus braueri and rhombic lanternfish Krefftichthys anderssoni (Family Myctophidae) in the Scotia Sea, Southern Ocean Ryan A. Saunders1 | Silvia Lourenço2,3 | Rui P. Vieira4 | Martin A. Collins1 | Carlos A. Assis5,6 | Jose C. Xavier7,1 1British Antarctic Survey, Natural Environment Research Council, Cambridge, UK Abstract 2MARE - Marine and Environmental Sciences This study examines age and growth of Brauer's lanternfish Gymnoscopelus braueri and Centre, Polytechnic of Leiria, Peniche, Portugal rhombic lanternfish Krefftichthys anderssoni from the Scotia Sea in the Southern Ocean, 3CIIMAR/CIMAR, Interdisciplinary Centre of Marine and Environmental Research, through the analysis of annual growth increments deposited on sagittal otoliths. Oto- University of Porto, Matosinhos, Portugal lith pairs from 177 G. braueri and 118 K. anderssoni were collected in different seasons 4 Centre for Environment Fisheries and from the region between 2004 and 2009. Otolith-edge analysis suggested a seasonal Aquaculture Sciences, Lowestoft, UK change in opaque and hyaline depositions, indicative of an annual growth pattern, 5MARE-ULisboa – Marine and Environmental Sciences Centre, Faculty of Sciences, although variation within the populations of both species was apparent. Age estimates University of Lisbon, Lisbon, Portugal varied from 1 to 6 years for G. braueri (40 to 139 mm standard length; LS)andfrom 6Department of Animal Biology, Faculty of Sciences, University of Lisbon, Lisbon, Portugal 0 to 2 years for K. anderssoni (26 to 70 mm LS). Length-at-age data were broadly con- 7Department of Life Sciences, MARE-UC, sistent with population cohort parameters identified in concurrent length-frequency University of Coimbra, Coimbra, Portugal data from the region for both species. -
An Assessment for Fisheries Operating in South Georgia and South Sandwich Islands
FAO International Plan of Action-Seabirds: An assessment for fisheries operating in South Georgia and South Sandwich Islands by Nigel Varty, Ben Sullivan and Andy Black BirdLife International Global Seabird Programme Cover photo – Fishery Patrol Vessel (FPV) Pharos SG in Cumberland Bay, South Georgia This document should be cited as: Varty, N., Sullivan, B. J. and Black, A. D. (2008). FAO International Plan of Action-Seabirds: An assessment for fisheries operating in South Georgia and South Sandwich Islands. BirdLife International Global Seabird Programme. Royal Society for the Protection of Birds, The Lodge, Sandy, Bedfordshire, UK. 2 Executive Summary As a result of international concern over the cause and level of seabird mortality in longline fisheries, the United Nations Food and Agricultural Organisation (FAO) Committee of Fisheries (COFI) developed an International Plan of Action-Seabirds. The IPOA-Seabirds stipulates that countries with longline fisheries (conducted by their own or foreign vessels) or a fleet that fishes elsewhere should carry out an assessment of these fisheries to determine if a bycatch problem exists and, if so, to determine its extent and nature. If a problem is identified, countries should adopt a National Plan of Action – Seabirds for reducing the incidental catch of seabirds in their fisheries. South Georgia and the South Sandwich Islands (SGSSI) are a United Kingdom Overseas Territory and the combined area covered by the Territorial Sea and Maritime Zone of South Georgia is referred to as the South Georgia Maritime Zone (SGMZ) and fisheries within the SGMZ are managed by the Government of South Georgia and South Sandwich Islands (GSGSSI) within the framework of the Convention on the Conservation of Antarctic Marine Living (CCAMLR). -
Frozen Desert Alive the Role of Sea Ice for Pelagic Macrofauna and Its Predators: Implications for the Antarctic Pack-Ice Food Web
Frozen Desert Alive The role of sea ice for pelagic macrofauna and its predators: implications for the Antarctic pack-ice food web Hauke Flores FrozenDesertAlive �-*#-$1#'!#$-0.#*%'!+!0-$3,,"'21.0#"2-01S '+.*'!2'-,1$-02&#,20!2'!.!)V'!#$--"5# 0',2#" 7-,1#,--'#, T4TQ""# "*#!20-,'!4#01'-,4'* *#2S &22.S 555T03%T,* ' *'-2&##) !2*-%' #12,"#, #*#).3 03% "'11#022'#1 ',"#6 %&'(S[YZV[RVXVXVVUU[VT 1%23&4(%5"1&%"%617(%(6"( FrozenDesertAlive �-*#-$1#'!#$-0.#*%'!+!0-$3,,"'21.0#"2-01S '+.*'!2'-,1$-02&#,20!2'!.!)V'!#$--"5# 17"8&9:1%8 2#04#0)0'(%',%4,"-!2-02',"# <'1)3,"##,(23305#2#,1!&..#, ,"#1'()13,'4#01'2#'260-,',%#, -.%#8%4,"# 1#!2-0>%,'$'!31Q"0T8T?5021Q ',-.#, 02#4#0"#"'%#,-. 40'("%S+#'TRR[ -+SUTSW330 "--0 HaukeFlores %# -0#,-.SZ1#.2#+ #0S[YV 2#'0#+#0&4#, 0-+-2-0 S0-$T"0T<T2T<-*$$ 9-.0-+-2-0 SB0T2TT4,80,#)#0 '#--0"#*',%1!-++'11'# S0-$T"0T'0T:T2T<T"#'0 S0-$T"0T4T5T'2&+,, S0-$T"0T8TT>T5-*!)#02 %,+#+-07-$+7%0,"+-2� %,6#"#,)#,,+#',#60-!+322#0 6'1#*8*-0#1 TV&#.TS[TSVTX2,TTRRZ Contents ",%*'1&13++07 Z B32!&13++07 SS 6#0+,13++07 SV 9&.2#0S 6#,#0*%,20-"3!2'-, S[ 9&.2#0T B'#2-$25-'!#$'1&1.#!'#1$0-+2&#&-32&&*," U[ %1*,"1,""*#.&,2%1*,"1QChampsocephalusgunnari ,"Chaenocephalusaceratus',TRRSTRRU PolarBiology27(2004)119R129 9&.2#0U ",#0%7!-,2#,2-$,20!2'!+#1-.#*%'!$'1S XS '+.*'!2'-,1$-02&#+0',#$--"5# PolarBiology29(2006)10451051 9&.2#0V B'120' 32'-,Q 3,",!#,"#!-*-%'!*0#*#4,!#-$ YU .#*%'!$'1',2P#4&#Q&-32�,7!#, MarineEcologyProgressSeries367(2008)271282 9&.2#0W -
A Report on the Guano-Producing Birds of Peru [“Informe Sobre Aves Guaneras”]
PACIFIC COOPERATIVE STUDIES UNIT UNIVERSITY OF HAWAI`I AT MĀNOA Dr. David C. Duffy, Unit Leader Department of Botany 3190 Maile Way, St. John #408 Honolulu, Hawai’i 96822 Technical Report 197 A report on the guano-producing birds of Peru [“Informe sobre Aves Guaneras”] July 2018* *Original manuscript completed1942 William Vogt1 with translation and notes by David Cameron Duffy2 1 Deceased Associate Director of the Division of Science and Education of the Office of the Coordinator in Inter-American Affairs. 2 Director, Pacific Cooperative Studies Unit, Department of Botany, University of Hawai‘i at Manoa Honolulu, Hawai‘i 96822, USA PCSU is a cooperative program between the University of Hawai`i and U.S. National Park Service, Cooperative Ecological Studies Unit. Organization Contact Information: Pacific Cooperative Studies Unit, Department of Botany, University of Hawai‘i at Manoa 3190 Maile Way, St. John 408, Honolulu, Hawai‘i 96822, USA Recommended Citation: Vogt, W. with translation and notes by D.C. Duffy. 2018. A report on the guano-producing birds of Peru. Pacific Cooperative Studies Unit Technical Report 197. University of Hawai‘i at Mānoa, Department of Botany. Honolulu, HI. 198 pages. Key words: El Niño, Peruvian Anchoveta (Engraulis ringens), Guanay Cormorant (Phalacrocorax bougainvillii), Peruvian Booby (Sula variegate), Peruvian Pelican (Pelecanus thagus), upwelling, bird ecology behavior nesting and breeding Place key words: Peru Translated from the surviving Spanish text: Vogt, W. 1942. Informe elevado a la Compañia Administradora del Guano par el ornitólogo americano, Señor William Vogt, a la terminación del contracto de tres años que con autorización del Supremo Gobierno celebrara con la Compañia, con el fin de que llevara a cabo estudios relativos a la mejor forma de protección de las aves guaneras y aumento de la produción de las aves guaneras. -
Rapid Radiation of Southern Ocean Shags in Response to Receding Sea Ice 2 3 Running Title: Blue-Eyed Shag Phylogeography 4 5 Nicolas J
bioRxiv preprint doi: https://doi.org/10.1101/2021.08.18.456742; this version posted August 19, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. 1 1 Rapid radiation of Southern Ocean shags in response to receding sea ice 2 3 Running title: Blue-eyed shag phylogeography 4 5 Nicolas J. Rawlence1, *, Alexander T. Salis1, 2, Hamish G. Spencer1, Jonathan M. Waters1, 6 Lachie Scarsbrook1, Richard A. Phillips3, Luciano Calderón4, Timothée R. Cook5, Charles- 7 André Bost6, Ludovic Dutoit1, Tania M. King1, Juan F. Masello7, Lisa J. Nupen8, Petra 8 Quillfeldt7, Norman Ratcliffe3, Peter G. Ryan5, Charlotte E. Till1, 9, Martyn Kennedy1,* 9 1 Department of Zoology, University of Otago, Dunedin, New Zealand. 10 2 Australian Centre for Ancient DNA, University of Adelaide, South Australia, Australia. 11 3 British Antarctic Survey, Natural Environment Research Council, United Kingdom. 12 4 Instituto de Biología Agrícola de Mendoza (IBAM, CONICET-UNCuyo), Argentina. 13 5 FitzPatrick Institute of African Ornithology, Department of Biological Sciences, University 14 of Cape Town, South Africa. 15 6 CEBC-CNRS, UMR 7372, 405 Route de Prissé la Charrière, 79360 Villiers en Bois, 16 France. 17 7 Justus Liebig University, Giessen, Germany. 18 8 Organisation for Tropical Studies, Skukuza, South Africa. 19 9 School of Human Evolution and Social Change, Arizona State University, Arizona, USA. 20 21 Prepared for submission as a research article to Journal of Biogeography 22 23 * Corresponding authors: [email protected]; [email protected] 24 25 ACKNOWLEDGEMENTS 26 This work was supported with funding from the University of Otago. -
South Georgia Andrew Clarke, John P
Important Bird Areas South Georgia Andrew Clarke, John P. Croxall, Sally Poncet, Anthony R. Martin and Robert Burton n o s r a e P e c u r B South Georgia from the sea; a typical first view of the island. Abstract The mountainous island of South Georgia, situated in the cold but productive waters of the Southern Ocean, is a UK Overseas Territory and one of the world’s most important seabird islands. It is estimated that over 100 million seabirds are based there, while there may have been an order of magnitude more before the introduction of rats. South Georgia has 29 species of breeding bird, and is the world’s most important breeding site for six species (Macaroni Penguin Eudyptes chrysolophus , Grey-headed Albatross Thalassarche chrysostoma , Northern Giant Petrel Macronectes halli , Antarctic Prion Pachyptila desolata , White-chinned Petrel Procellaria aequinoctialis and Common Diving Petrel Pelecanoides urinatrix ). Several of the key species are globally threatened or near-threatened, which emphasises the need for action to improve the conservation status of the island’s birds. South Georgia is currently classified by BirdLife International as a single Important Bird Area (IBA) but it may be better considered as comprising several distinct IBAs. Current threats to the South Georgia avifauna include rats (a major campaign to eliminate rats began in 2010/11), regional climate change, and incidental mortality in longline and trawl fisheries. Local fisheries are now well regulated but South Georgia albatrosses and petrels are still killed in large numbers in more distant fisheries. 118 © British Birds 105 • March 2012 • 118 –144 South Georgia This paper is dedicated to the memory of Peter Prince (1948–1998), who worked on South Georgia from 1971. -
Observations on Growth of Blue-Footed Boobies And
Made in United States of America Reprinted from JOURNAL OF FIELD ORNITHOLOGY Vol. 52, No. 4, Autumn 1981 Observations on Growth of Blue-footed Boobies and Development of Temperature Regulation in Peruvian Guano Birds.-Growth rates of seabirds have been related to the availability of food such that pelagic species usually grow more slowly than coastal species (Lack 1968, Harris 1977, Nelson 1977). Differences in growth rates between populations of the same species have been correlated with distance to food supplies or productivity of the surrounding ocean (Nelson 1978), but more comparative data are needed to fully describe these relationships. In this paper, we report upon the growth of the Blue-footed Booby (Sula nebouxii), and the development of temperature regulation in the Peruvian Booby (Sula variegata), Guanay Cormorant (Phalacrocorax bougainvillii), and Brown Pelican (Pelecanus occidentalis) on two guano islands in the Peruvian coastal current, formerly one of the richest fisheries in the world. Study sites and methods.-Duffy visited Lobos de Tierra Island between 24 and 27 February 1979, and Macabi Island between 18 and 21 February 1979. Chicks were weighed with Pesola spring balances and the wing chord, tarsus, and exposed culmen were measured at the beginning and end of a 3-day interval on each island. Growth increments were used to construct composite growth curves according to the method of Ricklefs and White (1975). In addition, proventricular temperatures of chicks isolated from the nest at prevailing ambient temperatures (23-28°C) were measured with a therm istor thermometer (YSI) at 10-min intervals over a period of 30 min. -
Shags in Antarctica: Their Feeding Behaviour and Ecological Role in the Marine Food Web
Antarctic Science 18 (1), 3-14 (2006) ©Antarctic Science Ltd Printed in the UK DOI: 10.1017/S0954102006000010 Review Shags in Antarctica: their feeding behaviour and ecological role in the marine food web RICARDO CASAUX1* and ESTEBAN BARRERA-ORO12 1 Instituto Antártico Argentino, Cerrito 1248, (1010) Buenos Aires, Argentina and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, (1033) Buenos Aires, Argentina 2 Museo Argentino de Ciencias Naturales "Bernardino Rivadavia ", División Ictiología, Angel Gallardo 470, C1405DJR Buenos Aires, Argentina * Present address: Laboratorio de Investigaciones en Ecología y Sistemática Animal (LIESA), Universidad Nacional de la Patagonia, Ruta 259 km 5, 9200 Esquel, Chubut, Argentina [email protected]. ar Abstract: Feeding behaviour, ecological role in the marine food web and population trends of the Antarctic shag Phalacrocorax bransfieldensis and the South Georgia shag P. georgianus in Antarctica are analysed. The diving depths and duration recorded for these shags are the deepest and longest among all flying birds in Antarctica and match deep dives performed by small Antarctic penguins. Individual shags of both sexes partition foraging depths and food resources, which might diminish intra-specific competition. Like other sub-Antarctic shags, P. bransfieldensis and P. georgianus are bottom feeders that prey predominantly on demersal fish. In the southern Scotia Arc and west Antarctic Peninsula, nototheniids, mainlyNotothenia coriiceps, constitute their main prey. Shag partners alternate the time at sea and, as the energy requirements at the nest increase, they increase the number but reduce the duration of the feeding trips. A steady declining trend in the number of breeding pairs of both species has been observed in the last decade at several Antarctic localities; this phenomenon at the South Shetland Islands might be at least partially explained by the effect of the commercial fishery on their prey. -
Swimbladders in Mesopelagic Fishes Bibliography
Swimbladders in Mesopelagic Fishes Bibliography Hope Shinn, Librarian, LAC Group on assignment at NOAA Central Library NCRL subject guide 2021-06 DOI: 10.25923/a1p9-zh44 June 2021 U.S. Department of Commerce National Oceanic and Atmospheric Administration Office of Oceanic and Atmospheric Research NOAA Central Library – Silver Spring, Maryland Table of Contents Background & Scope ................................................................................................................................. 2 Sources Reviewed ..................................................................................................................................... 2 References ................................................................................................................................................ 3 1 Background & Scope This bibliography is a representative sample of relevant literature on swimbladders in mesopelagic fish and their acoustic properties. References included in this bibliography are mainly from peer-reviewed, academic literature and span the years 1954-2021. The references are listed alphabetically by first author. Sources Reviewed The following databases were used to identify sources: Clarivate Analytics’ Web of Science: Science Citation Index Expanded and Social Science Index; EconLit; ProQuest’s Science and Technology including Aquatic Science Fisheries Abstracts; Elsevier’s Science Direct; JSTOR; EBSCO’s Academic Search Complete and Environment Complete; NOAA’s Institutional Repository; the Biodiversity -
Biogeographic Atlas of the Southern Ocean
Census of Antarctic Marine Life SCAR-Marine Biodiversity Information Network BIOGEOGRAPHIC ATLAS OF THE SOUTHERN OCEAN CHAPTER 7. BIOGEOGRAPHIC PATTERNS OF FISH. Duhamel G., Hulley P.-A, Causse R., Koubbi P., Vacchi M., Pruvost P., Vigetta S., Irisson J.-O., Mormède S., Belchier M., Dettai A., Detrich H.W., Gutt J., Jones C.D., Kock K.-H., Lopez Abellan L.J., Van de Putte A.P., 2014. In: De Broyer C., Koubbi P., Griffiths H.J., Raymond B., Udekem d’Acoz C. d’, et al. (eds.). Biogeographic Atlas of the Southern Ocean. Scientific Committee on Antarctic Research, Cambridge, pp. 328-362. EDITED BY: Claude DE BROYER & Philippe KOUBBI (chief editors) with Huw GRIFFITHS, Ben RAYMOND, Cédric d’UDEKEM d’ACOZ, Anton VAN DE PUTTE, Bruno DANIS, Bruno DAVID, Susie GRANT, Julian GUTT, Christoph HELD, Graham HOSIE, Falk HUETTMANN, Alexandra POST & Yan ROPERT-COUDERT SCIENTIFIC COMMITTEE ON ANTARCTIC RESEARCH THE BIOGEOGRAPHIC ATLAS OF THE SOUTHERN OCEAN The “Biogeographic Atlas of the Southern Ocean” is a legacy of the International Polar Year 2007-2009 (www.ipy.org) and of the Census of Marine Life 2000-2010 (www.coml.org), contributed by the Census of Antarctic Marine Life (www.caml.aq) and the SCAR Marine Biodiversity Information Network (www.scarmarbin.be; www.biodiversity.aq). The “Biogeographic Atlas” is a contribution to the SCAR programmes Ant-ECO (State of the Antarctic Ecosystem) and AnT-ERA (Antarctic Thresholds- Ecosys- tem Resilience and Adaptation) (www.scar.org/science-themes/ecosystems). Edited by: Claude De Broyer (Royal Belgian Institute