Fourth International Orca Symposium and Workshop - CEBC - CNRS

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The use of satellite telemetry has shown to be a powerful tool in understanding the range, habitat use, movement pattern and diving behaviour of killer whales. However, the use of this technique is not recommended unless there is enough baseline information on the whales to be studied and there are important question/questions which can not be answered in another way. FOURTH INTERNATIONAL ORCA SYMPOSIUM AND WORKSHOPS SEPTEMBER 23-28 2002, CEBC-CNRS, France 10
KILLER WHALE WORKSHOP - CONSERVATION 27 SEPTEMBER 2002 ANDREW TRITES, CHAIR Participants Andrew W Trites University of British Columbia Canada Lea David CEBC-CNRS France Marthán Bester University of Pretoria South Africa Fabierre Delfour University of Grenoble France Miguel Iniguez Cethus Foundation Argentina Alexandra Mironova Sevostrybvod Russia Birgit Kriete Orca Relief USA Stefan Jacobs Center for Whale Research USA Jodi Smith Orca Conservancy USA Nic Dedeluk Vancouver Aquarium Canada Marc Pakenham Fisheries and Oceans Canada Peter Ross Fisheries and Oceans Canada Margie Morrice Deakin University Australia WORKSHOP REPORT • The workshop participants recognized that we had broad geographic representation, with the exception of Norway • Conservation was assumed to reflect the maintenance of healthy abundant populations of killer whales now and in the future • Seven threats to the conservation of killer whales were identified. They included habitat loss, reductions in prey abundance, effects of climate change, lack of governance, whale watching, pollution and the possible effects of exotic species introduced into the marine environment. • Workshop participants were asked to rank the importance of these issues at local and global scales (Appendix 1). Participants recognized that the 7 potential risks were not necessarily mutually exclusive. • Weighting the collective responses of the participants (Appendix 1) indicated the highest local conservation concerns were: o Changes in prey, o Pollution, o Whale watching, and o Habitat loss. • Globally, the participants felt the highest concerns stemmed from: o Pollution, o Changes in prey, FOURTH INTERNATIONAL ORCA SYMPOSIUM AND WORKSHOPS SEPTEMBER 23-28 2002, CEBC-CNRS, France 11
Page 1 and 2: Fourth International Orca Symposium
Page 3 and 4: Anatomy of a Long-term Study: Popul
Page 5 and 6: KILLER WHALE WORKSHOP - FORAGING EC
Page 7 and 8: (including crittercams) and high-fr
Page 9: The way prey avoids killer whale pr
Page 13 and 14: • Are killer whales opportunistic
Page 15 and 16: 6. Lack of Governance The wise appl
Page 17 and 18: Appendix 1 Top 3 threats to killer
Page 19 and 20: KILLER WHALE WORKSHOP - ACOUSTIC Pa
Page 21 and 22: lowest band, and burst-pulsing can
Page 23 and 24: the presence of killer whales throu
Page 25 and 26: KILLER WHALE WORKSHOP - POPULATION
Page 27 and 28: that resident killer whales have bo
Page 29 and 30: Bigg also used the alphanumeric sys
Page 31 and 32: Stevens, T.A., D.A. Duffield, E.D.
Page 33 and 34: population but that have markedly d
Page 35 and 36: KILLER WHALES AT MARION ISLAND, SOU
Page 37 and 38: watching from shore based vantage p
Page 39 and 40: Frequency of occurrence (%) 5 4,5 4
Page 41 and 42: Great White Shark (north of Montere
Page 43 and 44: white shark attack 1997 40° 30° 8
Page 45 and 46: KILLER WHALES (ORCINUS ORCA) OF ALA
Page 47 and 48: sightings for RJ were obtained from
Page 49 and 50: Figure 1. Sightings (o) and strandi
Page 51 and 52: RESULTS AND DISCUSSION Sightings Ov
Page 53 and 54: Fig. 2 - The overall gray pigmentat
Page 55 and 56: average click sounds with 51 clicks
Page 57 and 58: THE BC CETACEAN SIGHTINGS NETWORK:
Page 59 and 60: VOCAL BEHAVIOUR OF TRANSIENT KILLER
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Call rate (calls per individual per
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MIRROR IMAGE PROCESSING IN KILLER W
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ANALYSIS OF THE DISCRETE CALLS OF K
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REFERENCES Ford J.K.B. Call traditi
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IS KILLER WHALE (ORCINUS ORCA) BEHA
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localize the vocalizations of indiv
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A total of 16 pods were described f
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BEHAVIOURAL AND ACOUSTIC DIFFERENCE
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ANALYSIS OF PHOTO-IDENTIFICATION DA
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Overall, there is some evidence for
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ASSESSING THE IMPACTS OF KILLER WHA
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WORLD-WIDE GENETIC DIVERSITY IN THE
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COOPERATIVE HUNTING AND PREY HANDLI
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Using this method established by Bi
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SURFACE INTERVALS OF AN ADULT MALE
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VARIABILITIES IN SURFACE INTERVALS
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The lack of understanding of transi
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ANATOMY OF A LONG-TERM STUDY: POPUL
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Blubber from biopsy samples were an
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km from southeastern Alaska, south
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Most large whale kills from Mexico
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Figure 1 FOURTH INTERNATIONAL ORCA
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UNRAVELING THE INFLUENCE OF SOCIAL
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On the basis of these reported sigh
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KILLER WHALES (ORCINUS ORCA) IN AUS
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Southern Oceans Orca Database The S
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evidence that it had ingested piece
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Figure 1. Distribution of killer wh
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LIFE HISTORY AND POPULATION DYNAMIC
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The population model predicted that
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LIFE HISTORY AND DECLINE OF KILLER
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and Otto’s and Generalised Remova
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killer whale concentrations in Prin
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TOXICOLOGICAL EFFECTS OF TOXIC CHEM
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3. Barrett-Lennard,L.G. 2000. Popul
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THE BIOLOGY AND STATUS OF AN ENDANG
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MATCHED VOCAL EXCHANGES OF SHARED S
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The total number of good quality lo
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AERIAL VOCALISATIONS OF KILLER WHAL
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Pilot Whales (Globicephala melas),
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FIG.1: Research Area FIG.2: Aleator
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THEODOLITE STUDY OF THE EFFECTS OF
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FOURTH INTERNATIONAL ORCA SYMPOSIUM
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Southeaster n Alaska Study Figure 1
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ENCOUNTERS 5 4 3 2 1 0 SEP OCT NOV
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WHAT IS THE FAVOURITE PREY ? FORAGI
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1998, Hoelzel et al. 1998, Matkin e
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LITERATURE CITIED Bain, D.E. 1989.
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een an observed attack on Northern
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percent number of sightings 16 14 1
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also analyse earlier recordings obt
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Thomsen, F., Franck, D. and Ford, J
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A REVIEW OF SHORT- AND LONG-TERM EF
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question of whether whale watching
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values of all possible pairs of wha
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Bigg, M.A, Ellis, G.M., Ford J.K.B.
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Figure 2. Cluster tree of associati
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RESULTS: A total of 55 echo-sounder
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Figure texts for the summary of: "N
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The Orca Survey staff has accentuat
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Travel formation in relation to num
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NEW ZEALAND ORCA Visser I.N. Orca R
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Visser, I. N. (2000). Orca (Orcinus
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~ Some Antarctic killer whales have
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FIRST PHOTO-IDENTIFICATION MATCHES
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variable calls was significantly hi
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whales, rather than providing infor
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Figure 1. Predicted density of kill
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Probability Randomly choose paramet
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WHY DO SOME KILLER WHALES TALK SO M
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Figure2: Spectrographic examples of
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Deecke, V. B., J. K. B. Ford, et al
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Secchi, 47 Shapiro, 136 Sigurjonsso
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Fourth International Orca Symposium and Workshop - CEBC - CNRS

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