Northern Bottlenose Whale (Scotian Shelf Population)
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Subsurface and Nighttime Behaviour of Pantropical Spotted Dolphins in Hawai′I
Color profile: Generic CMYK printer profile Composite Default screen 988 Subsurface and nighttime behaviour of pantropical spotted dolphins in Hawai′i Robin W. Baird, Allan D. Ligon, Sascha K. Hooker, and Antoinette M. Gorgone Abstract: Pantropical spotted dolphins (Stenella attenuata) are found in both pelagic waters and around oceanic is- lands. A variety of differences exist between populations in these types of areas, including average group sizes, extent of movements, and frequency of multi-species associations. Diving and nighttime behaviour of pantropical spotted dolphins were studied near the islands of Maui and Lana′i, Hawai′i, in 1999. Suction-cup-attached time–depth recorder/VHF-radio tags were deployed on six dolphins for a total of 29 h. Rates of movements of tagged dolphins were substantially lower than reported in pelagic waters. Average diving depths and durations were shallower and shorter than reported for other similar-sized odontocetes but were similar to those reported in a study of pantropical spotted dolphins in the pelagic waters of the eastern tropical Pacific. Dives (defined as >5 m deep) at night were deeper (mean = 57.0 m, SD = 23.5 m, n = 2 individuals, maximum depth 213 m) than during the day (mean = 12.8 m, SD = 2.1 m, n = 4 individuals, maximum depth 122 m), and swim velocity also increased after dark. These results, together with the series of deep dives recorded immediately after sunset, suggest that pantropical spotted dolphins around Hawai′i feed primarily at night on organisms associated with the deep-scattering layer as it rises up to the surface after dark. -
The Gully Marine Protected Area Data Assessment
Canadian Science Advisory Secretariat (CSAS) Research Document 2015/056 Maritimes Region The Gully Marine Protected Area Data Assessment K. Allard1, N. Cochrane2, K. Curran2, D. Fenton2, T. Koropatnick2, C. Gjerdrum3, B.J.W. Greenan2, E. Head2, P. Macnab2, H. Moors-Murphy2, A. Serdynska2, M.K. Trzcinski2, M. Vaughan4, and H. Whitehead5 Edited by A. Moore2 1 Canadian Wildlife Service Environment Canada 17 Waterfowl Lane, Sackville, NB E4L 1G6 2 Bedford Institute of Oceanography Fisheries and Oceans Canada P.O. Box 1006, Dartmouth NS B2Y 4A2 3 Canadian Wildlife Service Environment Canada 45 Alderney Drive, Dartmouth, NS B2Y 2N6 4 Department of Zoology University of British Columbia 6270 University Blvd., BC V6T 1Z4 5 Department of Biology Dalhousie University 1355 Oxford Street, Halifax, NS B3H 4J1 December 2015 Foreword This series documents the scientific basis for the evaluation of aquatic resources and ecosystems in Canada. As such, it addresses the issues of the day in the time frames required and the documents it contains are not intended as definitive statements on the subjects addressed but rather as progress reports on ongoing investigations. Research documents are produced in the official language in which they are provided to the Secretariat. Published by: Fisheries and Oceans Canada Canadian Science Advisory Secretariat 200 Kent Street Ottawa ON K1A 0E6 http://www.dfo-mpo.gc.ca/csas-sccs/ [email protected] © Her Majesty the Queen in Right of Canada, 2015 ISSN 1919-5044 Correct citation for this publication: Allard, K., Cochrane, N., Curran, K., Fenton, D., Koropatnick, T., Gjerdrum, C., Greenan, B.J.W., Head, E., Macnab, P., Moors-Murphy, H., Serdynska, A., Trzcinski, M.K., Vaughan, M., and Whitehead, H. -
National Marine Fisheries Service/NOAA, Commerce § 218.83
National Marine Fisheries Service/NOAA, Commerce § 218.83 (b) The incidental take of marine (S) Risso’s dolphin (Grampus mammals under the activities identi- griseus)—1,306,404. fied in § 218.80(c) is limited to the fol- (T) Rough-toothed dolphin (Steno lowing species, by the identified meth- bredanensis)—5,911. od of take: (U) Sowerby’s beaked whale (1) Harassment (Level A and Level B) (Mesoplodon bidens)—63,156. for all Training and Testing Activities: (V) Sperm whale (Physeter (i) Mysticetes: macrocephalus)—82,282. (A) Blue whale (Balaenoptera (W) Spinner dolphin (Stenella musculus)—817. longirostris)—115,310. (B) Bryde’s whale (Balaenoptera (X) Striped dolphin (Stenella edeni)—5,079. coerulealba)—1,222,149. (C) Fin whale (Balaenoptera (Y) True’s beaked whale (Mesoplodon physalus)—25,239. mirus)—99,123. (D) North Atlantic right whale (Z) White-beaked dolphin (Eubalaena glacialis)—955. (Lagenorhynchus albirostris)—16,400. (E) Humpback whale (Megaptera (iii) Pinnipeds: novaeangliae)—9,196. (A) Gray seal (Halichoerus grypus)— (F) Minke whale (Balaenoptera 14,511. acutorostrata)—336,623. (B) Harbor seal (Phoca vitulina)— (G) Sei whale (Balaenoptera borealis)— 39,519. 54,766. (C) Harp seal (Pagophilus (ii) Odontocetes: groenlanica)—16,319. (A) Atlantic spotted dolphin (Stenella (D) Hooded seal (Cystophora frontalis)—994,221. cristata)—1,472. (B) Atlantic white-sided dolphin (E) Ringed seal (Pusa hispida)—1,795. (Lagenorhynchus acutus)—206,144. (F) Bearded seal (Erignathus (C) Blainville’s beaked whale barbatus)—161. (Mesoplodon densirostris)—164,454. (2) Mortality (or lesser Level A in- (D) Bottlenose dolphin (Tursiops jury) for all Training and Testing Ac- truncatus)—1,570,031. -
State of the Eastern Scotian Shelf Ecosystem
Maritimes Region Ecosystem Status Report 2003/004 State of the Eastern Scotian Shelf Ecosystem Background The Eastern Scotian Shelf, comprising NAFO Div. 4VW, is a large geographic area (~108,000 km 2) supporting a wide range of ocean uses such as fisheries, oil and gas exploration and development, and shipping. It is currently the focus for the development of an integrated management plan intended to harmonize the conduct of the various ocean use activities within it (referred to as Eastern Scotian Shelf Integrated Management or ESSIM). The area is unique for having a year-round closure for directed fishing of groundfish since 1987, associated Summary with Emerald and Western Banks. In addition, The Many features of the Eastern Scotian Shelf Gully has been declared a pilot marine protected ecosystem have changed dramatically area. during the past thirty years: The Eastern Scotian Shelf consists of a series of • A major cooling event of the bottom outer shallow banks and inner basins separated by waters occurred in the mid-1980s that gullies and channels. The mean surface circulation is persisted for a decade and recent dominated by southwestward flow, much of which intensive stratification in the surface originates from the Gulf of St. Lawrence with anticyclonic circulation tending to occur over the layer has been apparent; both banks and cyclonic circulation around the basins. The phenomena are associated with flow northeastern region of the Shelf is the southern- most from upstream areas. limit of winter sea ice in the Atlantic Ocean. • The index of zooplankton abundance This document provides an assessment of the current was low in the decade of the 1990s state of the Eastern Scotian Shelf ecosystem. -
Dolphins, Porpoises, and Whales
1994-1998 Action Plan for the Conservation of Cetaceans Dolphins, Porpoises, and Whales Compiled by Randall R. Reeves and Stephen Leatherwood ,;•/• Zm^LJ,^^.,.^' nh' k.''-'._-tf;s»s=i^" lUCN lUCN/SSC Cetacean Specialist Group 1994 014 c. 2 lUCN The Worid Conservation Union 1994-1998 Action Plan for the Conservation of Cetaceans Dolphins, Porpoises, and Whales Compiled by Randall R. Reeves and Stephen Leatherwood lUCN/SSC Cetacean Specialist Group lUCN >\ Tha Worid Consarvstion Union SPEC its SURVIVAL COMMISMOM i.f«i«u,<^c>™.. WWF Chic«oZoolo,itJS<Kiciy .>r< . FiMESMH^EDsnnB X,'^'„„»^ .o«iitv.i,oN lociiT, ENVIRONMENTAL TRUST Dolphins, Porpoises, and Whales: 1994-1998 was made possible through the generous support of: Chicago Zoological Society DEJA, Inc. Greenpeace Environmental Trust Ocean Park Conservation Foundation People's Trust for Endangered Species Peter Scott lUCN/SSC Action Plan Fund (Sultanate of Oman) U.S. Marine Mammal Commission Whale & Dolphin Conservation Society World Wide Fund for Nature © 1994 International Union for Conservation of Nature and Natural Resources Reproduction of this publication for educational and other non-commercial purposes is authorized without permission from the copyright holder, provided the source is cited and the copyright holder receives a copy of the reproduced material. Reproduction for resale or other commercial purposes is prohibited without prior written permission of the copyright holder. This document should be cited as: Reeves, R.R. and Leathenwood, S. 1994. Dolphins, Porpoises, and Whales: 1994-1998 Action Plan for the Conservation of Cetaceans. lUCN, Gland, Switzerland. 92 pp. ISBN 2-8317-0189-9 Published by lUCN, Gland, Switzerland. -
Draft PEIS Supplemental Seismic Take Tables
Acoustic Modeling and Marine Mammal Incidental Take Supplemental Tables 1 Atlantic OCS Proposed Geological and Geophysical Activities Mid-Atlantic and South Atlantic Planning Areas DRAFT Programmatic Environmental Impact Statement VOLUME I Supplemental Seismic Take Tables U.S. Department of the Interior Bureau of Ocean Energy Management Gulf of Mexico OCS Region Acoustic Modeling and Marine Mammal Incidental Take Supplemental Tables 3 SUPPLEMENT A SEISMIC TAKE TABLES Acoustic Modeling and Marine Mammal Incidental Take Supplemental Tables Supplemental Take MarineMammalIncidental and Modeling Acoustic Supplemental Table A-1 Seismic Annual Takes Seismic Level A Takes – Southall Criteria Year 2012 2013 2014 2015 2016 2017 2018 2019 2020 ORDER CETACEA Suborder Mysticeti (Baleen Whales) Common Minke Whale 0.000 0.084 0.161 0.013 0.069 0.045 0.021 0.022 0.009 Sei Whale 0.002 0.211 0.405 0.035 0.178 0.115 0.057 0.060 0.030 Bryde's Whale 0.002 0.635 1.240 0.131 0.724 0.529 0.360 0.166 0.040 Blue Whale 0.000 0.831 1.623 0.164 0.915 0.664 0.439 0.208 0.043 Fin Whale 0.015 0.021 0.021 0.021 0.021 0.018 0.005 0.000 0.000 North Atlantic Right Whale 0.002 0.039 0.074 0.011 0.047 0.036 0.025 0.009 0.001 Humpback Whale 0.000 3.046 5.931 0.567 3.153 2.226 1.402 0.779 0.235 Suborder Odontoceti (Toothed Whales, Dolphins, and Porpoises) Short-beaked Common Dolphin 4.094 121.807 230.677 24.072 101.335 68.641 29.844 23.101 1.241 Pygmy Killer Whale 0.000 0.162 0.313 0.028 0.176 0.114 0.082 0.067 0.060 Short-Finned Pilot Whale 0.005 11.627 22.508 1.950 82.506 -
Genetic Drift Vs. Natural Selection in a Long-Term Small
Molecular Ecology (2007) 16, 4051–4065 doi: 10.1111/j.1365-294X.2007.03319.x GeneticBlackwell Publishing Ltd drift vs. natural selection in a long-term small isolated population: major histocompatibility complex class II variation in the Gulf of California endemic porpoise (Phocoena sinus) ADRIAN MUNGUIA-VEGA,* YARELI ESQUER-GARRIGOS,* LORENZO ROJAS-BRACHO,‡ RICARDO VAZQUEZ-JUAREZ,* AINES CASTRO-PRIETO§ and SERGIO FLORES-RAMIREZ† *Centro de Investigaciones Biológicas del Noroeste, SC Mar Bermejo 195, Playa Palo Santa Rita. La Paz, Baja California Sur, México 23090, †Laboratorio de Ecología Molecular y Genética de la Conservación, Universidad Autónoma de Baja California Sur, Km. 4.5 Carretera La Paz–Los Cabos, La Paz, Baja California Sur, México 23080, ‡Programa Nacional de Mamíferos Marinos, Instituto Nacional de Ecología/Centro de Investigación Científica y Educación Superior de Ensenada, Km. 107, Carretera Ensenada–Tijuana, Ensenada, Baja California, México 22860, §Centro de Investigación Científica y Educación Superior de Ensenada, Km. 107, Carretera Ensenada–Tijuana. Ensenada, Baja California, México 22860 Abstract Although many studies confirm long-term small isolated populations (e.g. island endemics) commonly sustain low neutral genetic variation as a result of genetic drift, it is less clear how selection on adaptive or detrimental genes interplay with random forces. We investi- gated sequence variation at two major histocompatibility complex (Mhc) class II loci on a porpoise endemic to the upper Gulf of California, México (Phocoena sinus, or vaquita). Its unique declining population is estimated around 500 individuals. Single-strand confor- mation polymorphism analysis revealed one putative functional allele fixed at the locus DQB (n = 25). At the DRB locus, we found two presumed functional alleles (n = 29), differ- ing by a single nonsynonymous nucleotide substitution that could increase the stability at the dimer interface of αβ-heterodimers on heterozygous individuals. -
Sea Watch Foundation – Northern Bottlenose Whale in UK Waters
SPECIES INFORMATION SHEET NORTHERN BOTTLENOSE WHALE IN UK WATERS DESCRIPTION The northern bottlenose whale, Hyperoodon ampullatus, is probably the best- studied species within the beaked whale family, Ziphiidae. Males are from 8.5-9.8 metres and females 7.5-8.7 metres in length. The most distinctive feature of the species is the bulbous forehead (particularly pronounced in adult males) and its relatively short, dolphin-like beak. There are two teeth at the tip of the lower jaw, which only erupt in adult males. The dorsal fin is relatively tall and sickle-shaped, and situated nearly two-thirds of the way along the back. As in other beaked whales, the tail flukes lack a central notch. The body colour is chocolate brown, to yellowish (depending on whether there is a growth of diatoms over the skin), and adult males have a white patch on the forehead. At sea, the blow is bushy, about 2 metres high, and slightly forward-pointing. DISTRIBUTION AND STATUS The range of the northern bottlenose whale is restricted to the North Atlantic, where it occurs mainly in cold temperate and sub-arctic waters. The species favours deep ocean trenches, such as occur off Newfoundland (particularly “the Gully”), western Norway, and in the Barents Sea. Its migration pattern is more complex than a mere north-south movement, and some populations seem to be resident year-round. The distribution seems to be strongly influenced by that of its major prey - squid of the genus Gonatus. Northern bottlenose whales are found mainly in deep waters of greater than 1,000 m depth, often over submarine canyons and adjacent to the continental shelf edge, although they sometimes enter more shallow waters (300 m or less depth), and in January 2006, one even found its way up the river Thames to the city of London! In waters adjacent to the UK and Ireland, the species is sighted primarily in the Faroe-Shetland Channel, Rockall Trough, and southern Bay of Biscay, but it has been seen on occasions in coastal waters, for example around the Isle of Skye or off Northern Scotland. -
Sperm Whale Physeter Macrocephalus
Secac Sightings! 3.900 There’s evidence of 30 species of cetaceans belon - sightings ging to 7 families in the Canary Archipel, which is a 34.5 % of the 87 species described in the whole pla - net; this makes The Canary Islands one of the areas with more diversity of cetaceans in the Atlantic North, specially with rare oceanic species and little known globally. Journeys Under effort Out of effort are one of The Canary Islands diversity the areas with more tlantic of cetaceans in the A North. teventura Lanzarote and Fuer t of high are a reference poin ns: 28 diversity of cetacea he Canary species of the 30 in t here. Islands are present Secac Secac 4.700 horas 58.820 miles hours Watching Sailing (108.010 km) Marine Mammals Did you Marine Mammals There’s evidence of 87 cetaceans species in the planet. As all the mammals, they’re warm-blooded animals, know they do breath atmospheric air, they give birth and feed the young with the milk from their mammary glands. that… There’s a huge variety of shapes and sizes, from 1,5m exceeding rarely the 50 kg (as for example the Vaquita) , to 28 m and more with 100.000kg (as the Blue rorqual). More than 70 million years of evolution 65 million years Mesonchids Pakicetus Ambulocetus The incursion into the water was gradual and took As a result of a progressive adaptation to this environment, cetaceans show place probably in the rivers , lakes and estuaries. an extreme anatomic and physiologic specialization, considering that they’ve lost the majority of the morphological characteristics which identify the rest of the mammals. -
Population Analysis of Endangered Northern Bottlenose Whales on the Scotian Shelf Seven Years After the Establishment of a Marine Protected Area
Vol. 21: 273–284, 2013 ENDANGERED SPECIES RESEARCH Published online October 9 doi: 10.3354/esr00533 Endang Species Res Population analysis of Endangered northern bottlenose whales on the Scotian Shelf seven years after the establishment of a Marine Protected Area Kristin O’Brien*, Hal Whitehead Department of Biology, Dalhousie University, Halifax, Nova Scotia B3H 4J1, Canada ABSTRACT: Marine Protected Areas (MPAs) are being established worldwide to protect vulnera- ble marine species and habitats, in the face of accelerating rates of species extinctions. Biophysical indicators such as focal species abundance are often employed to assess the effectiveness of MPAs at meeting conservation objectives. We examined the dynamics of an Endangered beaked whale population 7 yr after the Gully MPA was established in 2004 off Nova Scotia, Canada. Northern bottlenose whales forage in deep water such as the Gully submarine canyon. Several MPA restric- tions were implemented on the Gully ecosystem beginning in 2004 to reduce anthropogenic impacts including ship traffic, underwater noise and entanglements. This study represents the first intensive northern bottlenose whale population assessment since the Gully became a MPA. Using photo-identification data collected in 2010 and 2011, we applied mark–recapture tech- niques to estimate the current population size of northern bottlenose whales on the Scotian Shelf as 143 animals (95% CI: 129 to 156 animals). We also used open population models to examine population trends, and investigated changes in the sex ratio since 1988. Our results suggest the population size and sex ratio have been stable since before MPA legislation was implemented, illustrating the resilience of this population and suggesting that the MPA objective of preventing population decline is being met. -
An Ocean of Diversity: the Seabeds of the Canadian Scotian Shelf
An Ocean of Diversity The Seabeds of the Canadian Scotian Shelf and Bay of Fundy From above the waves, the expansive ocean waters off Nova Scotia and New Brunswick conceal the many different landscapes, habitats and ecological communities that lie beneath. As the glaciers retreated they left a complex system of shallow banks, steep-walled canyons, deep basins, patches of bare rock and boulders. WWF-Canada and Fisheries and Oceans Canada have worked with respected scientists to create a new map of seabed (or ocean bottom) features of the region. This new map will be used to help guide the design of a network of marine protected areas (MPAs) in the Scotian Shelf and Bay of Fundy regions. Mapping seabed features Marine animals and ecosystems are difficult to survey, and we do not have complete, continuous maps of the distribution of species and communities in our region — in fact, new species are still being discovered. But species are adapted to particular physical characteristics of their habitat, such as the levels of light reaching the seafloor, the range of water temperature, and the type of seafloor, from bedrock to sand to mud. This relationship allows us to use readily-available information about physical characteristics to create a more comprehensive picture of the different habitat types — and therefore ecological communities — that can be found in the region. This is the approach taken in the development of the Seabed Features map. Marine geologist Gordon Fader brought together scientific studies, high resolution seabed mapping, and his own extensive knowledge of the region to define areas based on their shape (morphology) and the geological history that formed them. -
Aloha & Welcome!
82nd HIHWNMS Sanctuary Advisory Council Meeting Tuesday, September 15, 2020 9:00 am – 11:30 am Public Comment: 10:50 am Aloha & Welcome! • You will begin in muted mode, but the session organizer can un-mute your connection at appropriate times & the “Chat” box will be open for submitting messages. • Primary Council Members: When you initially join, you will not at first have the ability to show yourself via your camera, nor be heard via audio. Staff will switch your status to “Panelist” & then you will have full control of your camera & audio. Due to camera limits only folks speaking should share their camera. • All Other Attendees: You will enter in muted mode & you will not be able to utilize your webcam. To get the attention of the organizer, please enter a note in the chat box. • All Participants: If you have trouble accessing the webinar, or problems occur during the session & you can’t enter it into the chat box, you can email [email protected] or check out https://support.goto.com/webinar 9:00 AM – 9:20 AM WELCOME/COUNCIL BUSINESS (SOL) • Roll Call (Kawika) • Review and approval of July 29, 2020 Meeting Minutes (Maka‘ala Ka‘aumoana) APPROVE JULY 29, 2020 MEETING MINUTES SHOWING PAGE 1 FOR VISUAL REFERENCE. DRAFT MEETING MINUTES CAN BE FOUND IN YOUR HANDOUTS SECTION OF CONTROL PANEL. 9:00 AM – 9:20 AM • Additional announcements from executive officers if any • Brief review and summary of previous issues, action items, and status (Cindy) • Completed: • Creation of a Native Hawaiian Culture subcommittee • Resolution supporting the