Gray Whales Adults 40-45 feet long; 40 tons Calves 15 feet long Spyhop Drawing by Morris Grover
Gray Whale Blows Blow released at 200mph Heart-shaped Blow
Blow Holes 2 blow holes 1 blow hole Baleen Whale Toothed Whale
Whale Lice 200,000 on their body
Barnacles Barnacles (200-400lbs) and Barnacle Scar
Feeding Depress tongue Lift Tongue Blonde Baleen
Rostrum and Baleen Baleen and Tongue
Gray Whale Food Items Mysids Krill Amphipods Opportunistic Feeders
Feeding Skimming Bottom Feeding-Left Tail Fluke
Dorsal Fins vs. Dorsal Humps Humpback Dorsal Fins Gray Whale Dorsal Humps
Identify Individuals by Dorsal Hump and Sometimes Tail Fluke
Behaviors Breach Kelping
Spyhop
Friendly Whales Found in San Ignacio Lagoon, Baja Cal. Mexico
What are you looking at?
 
Ecological Interrelationships Between Resident Gray Whales and Mysid Shrimp
What is a summer resident gray whale? <ul><li>A gray whale that returns in succeeding years. </li></ul><ul><li>A gray whal...
Why do resident gray whales come to Oregon in the summer? <ul><li>Resident grays come for food, primarily mysid shrimp but...
Feeding Behaviors of Gray Whales Skim Feeding on Crab Larvae Mysid Feeding-notice left fluke is in the air so the whale is...
Mysid Swarms Seen on Fish Finders   ( Red Band above the Black Bottom)  Swarm 8 foot thick and continuous Sharking- indica...
How do We Know What They Eat? <ul><li>Visual Observation of Feeding-Jean Michel Cousteau and his dive team tried to film t...
What is in Whale Fecal Material? What is in Whale Fecal Material? Mysid with Telson Statocyst Neomysis  telson to Left Hol...
What are Mysid Shrimp and How are they Different from Krill? <ul><li>Mysids are crustaceans like crabs and ghost shrimp bu...
Why are Mysids so Important?   <ul><li>They are important as a food source </li></ul><ul><li>for salmon, rockfish, birds a...
What have I learned about mysid shrimp? <ul><li>How to identify the 2 different species </li></ul><ul><li>How to sex them ...
Mysid Sexes
How do you sample population dynamics information of mysids? Put down plankton net Put down underwater camera Determine de...
Determining Density and Nearest Neighbor Distances (NND) Mysids NND can be from ½ body length to 2 body lengths Acrylic Cube
Determining Mysid Thickness with a Fish Finder
What Do We Know About the Life History of Mysids? Female  Holmesimysis  with brood pouch of 32 eggs-Stage 1 Mysids undergo...
Mysid Larval Stages, Stage 2 and Stage 3 Female with 19 Stage 2 larva or “ Torpedo stage ”   Late Stage 2, eyes pigmented ...
Problems Facing Gray Whales Natural Problems 1. Changes in Prey Biomass ie. El Nino 2. Attacks by Orcas ie. 1/3 Calves kil...
What Happens to Gray Whales in Years with Poor Mysid Biomass? 2005 was a poor year for mysids and  2006 was an excellent y...
Model Comparing Years of Continual Upwelling and Sporadic Upwelling 2005 and 2010 - weak winds  2003, 2004, 2006, 2007, 20...
Changes in Prey Biomass Problems with 2005 and 2010 Gray Whales <ul><li>Reduced NW winds resulting in lack of food </li></...
Body Condition varies with changes in Biomass Depression in Profile Straight Profile Good Body Condition seen in 2006 Poor...
They can become undernourished due to lack of food supplies Whales are sensitive to changes in their environment as seen b...
Orca Attacks Transient Orcas kill seals, sea lions and whales Tooth rakes on tail fluke or neck
Orcas Attack Star Star’s fluke in 1999 Star’s fluke in 2006 Evidence of an orca attack with tooth rakes on ventral and dor...
Orcas Attack mom Matrix Slasher and calf Nifer
Boat Propeller Cuts on Residents Cutter Rambolina Zebra Stripe rdh Zebra Stripe-left dorsal hump Zebra Stripe-rdh Football
Scarback Our most famous resident got hit by a harpoon Hit by exploding harpoon between  1985-1987 Whale lice
Scarback’s Tail Flukes changing with age-she’s turning gray New Discovery
Entanglement in Crab Pot Lines Humpback entangled in crab pot line
They can get lesions over their body due to toxins in the water or a depressed immune system Gray Whales with Toxins
Identification of Individual Gray Whales by Dorsal Hump Region Eagle Eye was born in 1994 to Snake Eyes and is a male  Rar...
White Whales and Dark Whales Chunky Ghost 8-Ball
Spike named for spikey dorsal hump and knuckles Ridgeback named for long ridge-like dorsal hump
Vinnie -A young whale named for the V-shaped dorsal hump and nn on neck
Morisa named for  Morse Code-Dot and Dash
Milky Way  -Scarback’s 2004 calf that returned as a 5-year old
2002 LDH RDH Stretch named for stretch-mark like horizontal lines and stretching/breaching out of the water 2004
Patches named for barnacle patches on body
U-Fish  Notice the U and Fish on each side of the dorsal hump
Dotsee Trio
Am I Dotsee or Trio
Valentine Notice the white heart and smooth dorsal hump-been here since 2003
Comet Notice the long white comet tail in front of the dorsal hump, c on the knuckles and how she blows underwater
Shamrock
Arrow  Notice the white arrow on the left dorsal hump and he’s a lefty
Pointer Notice pointed dorsal hump and killer whale tooth rakes and bite marks
New Discovery-Gray Whale DD Bubble Net Feeding
Dotty Meteor Winky How would you distinguish these individual whales?
Oregon’s Resident Whales Courting   Fluking In Synchrony Courting Behavior, late summer, female on left
.  Olivia P. Dorsi- a very promiscious young female
Oh No it’s two Pink Floyds-only 6 feet long, hot pink and prehensile
Curious Oregon Gray Whales
Resident gray whale Localities Whale Cove Cape Foulweather Boiler Bay Eagle Eye heading towards Depoe Bay
My Zodiac with  my dog and first mate, Kida
Close Encounters of the Whale Kind
Kida and the Whales
Good Bye From Ribbon
Good Bye From Snowflake
Good Bye From Stretch
Good Bye From Wishbone
20 (2.16 0 Mean Number of Juveniles/Female in August (n=75) 33 (1.59 0 Mean Number of Eggs/Female in August (n=67) 21 (1.2...
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OMSI Science Pub - Gray Whales

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  • OMSI Science Pub - Gray Whales

    1. 2. Gray Whales Adults 40-45 feet long; 40 tons Calves 15 feet long Spyhop Drawing by Morris Grover
    2. 3. Gray Whale Blows Blow released at 200mph Heart-shaped Blow
    3. 4. Blow Holes 2 blow holes 1 blow hole Baleen Whale Toothed Whale
    4. 5. Whale Lice 200,000 on their body
    5. 6. Barnacles Barnacles (200-400lbs) and Barnacle Scar
    6. 7. Feeding Depress tongue Lift Tongue Blonde Baleen
    7. 8. Rostrum and Baleen Baleen and Tongue
    8. 9. Gray Whale Food Items Mysids Krill Amphipods Opportunistic Feeders
    9. 10. Feeding Skimming Bottom Feeding-Left Tail Fluke
    10. 11. Dorsal Fins vs. Dorsal Humps Humpback Dorsal Fins Gray Whale Dorsal Humps
    11. 12. Identify Individuals by Dorsal Hump and Sometimes Tail Fluke
    12. 13. Behaviors Breach Kelping
    13. 14. Spyhop
    14. 15. Friendly Whales Found in San Ignacio Lagoon, Baja Cal. Mexico
    15. 16. What are you looking at?
    16. 18. Ecological Interrelationships Between Resident Gray Whales and Mysid Shrimp
    17. 19. What is a summer resident gray whale? <ul><li>A gray whale that returns in succeeding years. </li></ul><ul><li>A gray whale that spends at least 48 hours in a specific locality and exhibits feeding behavior. </li></ul>
    18. 20. Why do resident gray whales come to Oregon in the summer? <ul><li>Resident grays come for food, primarily mysid shrimp but also porcelain crab larvae (end of May or beginning of June), anchovy and other small prey items. </li></ul><ul><li>The round trip from Oregon to the lagoons of Baja California is less than half the distance (5,000 miles round trip vs 12,000 miles to Alaska). They save energy! </li></ul><ul><li>Out of the 18,000 Eastern Pacific Grays, about 250 resident grays remain from N. California to S. B.C. and don’t go to Alaska. </li></ul>Porcelain Crab Larvae Mysid Shrimp Amphipod
    19. 21. Feeding Behaviors of Gray Whales Skim Feeding on Crab Larvae Mysid Feeding-notice left fluke is in the air so the whale is on its right side above bottom. Each feeding behavior is unique for the type of prey the gray whale is targeting. Feeding on mysids in a Bullwhip Kelp bed-looks like a shark fin.
    20. 22. Mysid Swarms Seen on Fish Finders ( Red Band above the Black Bottom) Swarm 8 foot thick and continuous Sharking- indicative of mysid feeding seen in areas with thick echogram traces of mysids and shallow waters 20-35 feet deep
    21. 23. How do We Know What They Eat? <ul><li>Visual Observation of Feeding-Jean Michel Cousteau and his dive team tried to film this behavior in 2004-No Success (PBS film on research aired in July of 2006 called “Gray Whale Obstacle Course” by Ocean Futures Society). </li></ul><ul><li>Dissect open a dead whale-rare to encounter a freshly dead whale in sampling locality. </li></ul><ul><li>Collect fecal material-Being at the right place at the right time! This is my method! </li></ul>Whale Fecal Material A dream come true!
    22. 24. What is in Whale Fecal Material? What is in Whale Fecal Material? Mysid with Telson Statocyst Neomysis telson to Left Holmesimysis to right
    23. 25. What are Mysid Shrimp and How are they Different from Krill? <ul><li>Mysids are crustaceans like crabs and ghost shrimp but they look most similar to krill </li></ul>Mysid Krill Brown or transparent, slim, stalked eyes and found in near shore habitats Krill are orange, stocky, eyes not on stalks and found in offshore habitats
    24. 26. Why are Mysids so Important? <ul><li>They are important as a food source </li></ul><ul><li>for salmon, rockfish, birds and gray whales </li></ul><ul><li>They are used in toxicity studies </li></ul>Females brooding young have a higher lipid value
    25. 27. What have I learned about mysid shrimp? <ul><li>How to identify the 2 different species </li></ul><ul><li>How to sex them </li></ul><ul><li>How to sample population dynamics information about them </li></ul><ul><li>How to determine swarm area localities </li></ul><ul><li>How to determine available biomass for the whales </li></ul><ul><li>Understanding their life history </li></ul>
    26. 28. Mysid Sexes
    27. 29. How do you sample population dynamics information of mysids? Put down plankton net Put down underwater camera Determine density with acrylic cube Use of an acoustic sensor
    28. 30. Determining Density and Nearest Neighbor Distances (NND) Mysids NND can be from ½ body length to 2 body lengths Acrylic Cube
    29. 31. Determining Mysid Thickness with a Fish Finder
    30. 32. What Do We Know About the Life History of Mysids? Female Holmesimysis with brood pouch of 32 eggs-Stage 1 Mysids undergo 3 stages while in the brood pouch. To the right is: Stage 1-the Egg Stage
    31. 33. Mysid Larval Stages, Stage 2 and Stage 3 Female with 19 Stage 2 larva or “ Torpedo stage ” Late Stage 2, eyes pigmented Stage 3 Molted Larva have eyes on stalks -also called the “Cookie Monster Stage”
    32. 34. Problems Facing Gray Whales Natural Problems 1. Changes in Prey Biomass ie. El Nino 2. Attacks by Orcas ie. 1/3 Calves killed each year Man-made Problems 1. Boat Hits 2. Entanglement in Fishing Gear 3. Shot or Harpooned 4. Noise Levels ie. Shell Offshore Inc., 190dB problem 5. Toxins ie. Stinky Whales
    33. 35. What Happens to Gray Whales in Years with Poor Mysid Biomass? 2005 was a poor year for mysids and 2006 was an excellent year for mysids 2006 2005
    34. 36. Model Comparing Years of Continual Upwelling and Sporadic Upwelling 2005 and 2010 - weak winds 2003, 2004, 2006, 2007, 2008, 2009 - strong winds
    35. 37. Changes in Prey Biomass Problems with 2005 and 2010 Gray Whales <ul><li>Reduced NW winds resulting in lack of food </li></ul><ul><li>Whales not staying in area, move through just to check out what food is available. </li></ul><ul><li>Whales that are around are skinny with scapula showing through the skin and a depression behind blow hole. </li></ul><ul><li>Breath not stinky. </li></ul>
    36. 38. Body Condition varies with changes in Biomass Depression in Profile Straight Profile Good Body Condition seen in 2006 Poor Body Condition seen in 2005
    37. 39. They can become undernourished due to lack of food supplies Whales are sensitive to changes in their environment as seen by the scapula protruding
    38. 40. Orca Attacks Transient Orcas kill seals, sea lions and whales Tooth rakes on tail fluke or neck
    39. 41. Orcas Attack Star Star’s fluke in 1999 Star’s fluke in 2006 Evidence of an orca attack with tooth rakes on ventral and dorsal flukes
    40. 42. Orcas Attack mom Matrix Slasher and calf Nifer
    41. 43. Boat Propeller Cuts on Residents Cutter Rambolina Zebra Stripe rdh Zebra Stripe-left dorsal hump Zebra Stripe-rdh Football
    42. 44. Scarback Our most famous resident got hit by a harpoon Hit by exploding harpoon between 1985-1987 Whale lice
    43. 45. Scarback’s Tail Flukes changing with age-she’s turning gray New Discovery
    44. 46. Entanglement in Crab Pot Lines Humpback entangled in crab pot line
    45. 47. They can get lesions over their body due to toxins in the water or a depressed immune system Gray Whales with Toxins
    46. 48. Identification of Individual Gray Whales by Dorsal Hump Region Eagle Eye was born in 1994 to Snake Eyes and is a male Rare Flukeage Poopage Eagle Eye
    47. 49. White Whales and Dark Whales Chunky Ghost 8-Ball
    48. 50. Spike named for spikey dorsal hump and knuckles Ridgeback named for long ridge-like dorsal hump
    49. 51. Vinnie -A young whale named for the V-shaped dorsal hump and nn on neck
    50. 52. Morisa named for Morse Code-Dot and Dash
    51. 53. Milky Way -Scarback’s 2004 calf that returned as a 5-year old
    52. 54. 2002 LDH RDH Stretch named for stretch-mark like horizontal lines and stretching/breaching out of the water 2004
    53. 55. Patches named for barnacle patches on body
    54. 56. U-Fish Notice the U and Fish on each side of the dorsal hump
    55. 57. Dotsee Trio
    56. 58. Am I Dotsee or Trio
    57. 59. Valentine Notice the white heart and smooth dorsal hump-been here since 2003
    58. 60. Comet Notice the long white comet tail in front of the dorsal hump, c on the knuckles and how she blows underwater
    59. 61. Shamrock
    60. 62. Arrow Notice the white arrow on the left dorsal hump and he’s a lefty
    61. 63. Pointer Notice pointed dorsal hump and killer whale tooth rakes and bite marks
    62. 64. New Discovery-Gray Whale DD Bubble Net Feeding
    63. 65. Dotty Meteor Winky How would you distinguish these individual whales?
    64. 66. Oregon’s Resident Whales Courting Fluking In Synchrony Courting Behavior, late summer, female on left
    65. 67. . Olivia P. Dorsi- a very promiscious young female
    66. 68. Oh No it’s two Pink Floyds-only 6 feet long, hot pink and prehensile
    67. 69. Curious Oregon Gray Whales
    68. 70. Resident gray whale Localities Whale Cove Cape Foulweather Boiler Bay Eagle Eye heading towards Depoe Bay
    69. 71. My Zodiac with my dog and first mate, Kida
    70. 72. Close Encounters of the Whale Kind
    71. 73. Kida and the Whales
    72. 74. Good Bye From Ribbon
    73. 75. Good Bye From Snowflake
    74. 76. Good Bye From Stretch
    75. 77. Good Bye From Wishbone
    76. 78. 20 (2.16 0 Mean Number of Juveniles/Female in August (n=75) 33 (1.59 0 Mean Number of Eggs/Female in August (n=67) 21 (1.29 19 (1.58) Mean Number of Juveniles/Female in May (n=85) 25 (4.32 22 (4.34) Mean Number of Eggs/Female in May (n=52)     Mysids 0% 80% Percent of Whales in Poor Condition 90% 19% Percent of Time in Mysid Feeding 95% 20% Percent of Time of Whales in Residency 37 15 Number of Resident Whales 77 38 Days Observing 462 228 Observing Hours     Resident Whales 2006 2005  

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