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Photo Identification of Marine Mammals MARE 390 Dr. Turner

Photo Identification of Marine Mammals MARE 390 Dr. Turner

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Photo Identification of Marine Mammals MARE 390 Dr. Turner. Photo ID. Marked animals prereq. of behavioral studies in 1950’s and 60’s Identification of wild-animals via natural marks Useful in long-term studies Large & long-lived vertebrates. Photo ID in Marine Mammals. - PowerPoint PPT Presentation

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Page 1: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo Identification of Marine Mammals

MARE 390Dr. Turner

Page 2: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo IDMarked animals prereq. of behavioral studies in 1950’s and 60’s

Identification of wild-animals via natural marks

Useful in long-term studies

Large & long-lived vertebrates

Page 3: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo ID in Marine MammalsFirst record in marine mammals

Orca from Australia – late 1800’sWhalers & Fishermen documented 27

Many early records were anomalously white animals

Or severely damaged fins

Page 4: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo ID in Marine MammalsStudies using subtle natural markings in fins & flukes began in early 1970’s

Killer whales, Humpbacked Dolphins, Sousa,Bottlenose Dolphins, Spinner Dolphins

Humpback whales & Right whales

Page 5: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo ID in Marine MammalsReal benefit of technique are long-term studies

can identify relationships: social & sexual

Photogrammetry – measuring the size and spacing of animals

Page 6: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo ID MethodsDistinctive features – trailing edge of dorsal fin

- works well in some species – Tursiops > 50% identifiable - others (Spinner, Dusky, Pilot, Porpoises) < 20%

Longevity and Changeability of marks critical

Page 7: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo ID MethodsLongevity and Changeability of marks critical

Wounds and ScarsWounds heal rather quicklyScars last for life

Cookie-cutter shark bitesIntra-specific agression

Page 8: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo ID MethodsViewing animals:

From Shorenon-invasive, inexpensiveinformation on individuals limitedCamera or Theodolite tracking

From AirplanesSomewhat invasive & expensive

Page 9: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo ID MethodsViewing animals:

From BoatsMost practical, most invasive

Other formatsUnderwater CamerasVideo Cameras

Page 10: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo AnalysisNegatives, prints, digital imagesTracings, eye, microscopeExamine shape, markings, leading/trailing edge

Page 11: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo AnalysisStored with similar fins/flukes in folders

1, 2, 3 notchesDamaged finsBlack, white, black & white flukes

Page 12: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Dorsal Ratio

Page 13: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo Analysis

Page 14: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo AnalysisBeluga whale – scars on body

Killer whale – dorsal fin shapeSaddle pigmentation

Page 15: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo AnalysisPilot whale – nicks, scratches, scars, pigments on body and back

Humpbacked dolphin – scars on back, flank, dorsal fin

Page 16: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo AnalysisAtlantic white sideddolphin – scars and nicks,on dorsal fins; unusualpigment patterns

Dusky dolphin –scars and nicks, onDorsal fins; unusualpigment patterns

Page 17: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo AnalysisPacific white sided dolphin – scars and nicks,on dorsal fins; white individuals

Bottlenose dolphin – nicks, scars and pigment spots on dorsal fin

Page 18: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo AnalysisRisso’s dolphin – pigmentpatterns, nicks on dorsalfin, scars on back

Spinner dolphin – scars and marks on dorsal fin

Page 19: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo AnalysisAtlantic spotted dolphin– fin and fluke marks;body spot patterns

Pan tropical spotted dolphin – fin and flukemarks; body spot patterns

Page 20: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo AnalysisHeaviside’s dolphin – white animals, dorsalfin marks

Hector’s dolphin – dorsal fin nicks

Page 21: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo AnalysisHarbor porpoise – dorsal fin scars andnicks, and pigment areas

Dall’s porpoise – dorsal fin pigmentation, color anomalies, dorsal fin deformities

Page 22: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo AnalysisBaiji – dorsal fin scars and nicks, and pigment areas

Blainsville’s beaked whale – dorsal fin notches, white oval scars from cookie-cutter sharks, linear scars from intraspecific interactions

Page 23: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo AnalysisRight whale – pattern of callosities

Bowhead whale – pigment patterns

Page 24: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo AnalysisSperm whale – dorsal fin scars and nicks, and pigment areas

Blue whale – dorsal fin scars and nicks, cookie-cutter shark scars

Page 25: Photo Identification  of Marine Mammals MARE 390 Dr. Turner

Photo AnalysisHumpback whale – dorsal fin scars and nicks, cookie-cutter shark scars

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