1. Fish 475: Marine Mammalogy
Today is Wednesday,
9 May 2007
This Thursday’s lab section will meet in rm 108 FSH
There are no new handouts today

2. Foraging biology of cetaceans1

3. Foraging biology of cetaceans2
Foraging biology of cetaceans
Mysticetes: The filter feeders:
Balaenidae: Right whales:
“Skim feeders”
Copepod specialists
Extremely large heads
Elongated baleen plates with fine fringe for filtering small zooplankton prey

4. Foraging biology of cetaceans3
Foraging biology of cetaceans
Mysticetes: The filter feeders:
Balaenidae: Right whales:
“Skim feeders”
Copepod specialists
Extremely large heads
Elongated baleen plates with fine fringe for filtering small zooplankton prey

5. Foraging biology of cetaceans4
Foraging biology of cetaceans
Mysticetes: The filter feeders:
Balaenidae: Right whales:
“Skim feeders”
Copepod specialists
Extremely large heads
Elongated baleen plates with fine fringe for filtering small zooplankton prey

6. Foraging biology of cetaceans5
Foraging biology of cetaceans
Mysticetes: The filter feeders:
Balaenidae: Right whales:
“Skim feeders”
Copepod specialists
Extremely large heads
Elongated baleen plates with fine fringe for filtering small zooplankton prey

7. Foraging biology of cetaceans6
Mysticetes: The filter feeders:
Balaenidae: Right whales:
“Skim feeders”
Copepod specialists
Extremely large heads
Elongated baleen plates with fine fringe for filtering small zooplankton prey

8. Foraging biology of cetaceans7
Mysticetes: The filter feeders:
2. Balaenopteridae: Rorquals:
“Lunge feeders”
Throat pleats
Variable prey
Heads more compact than right whales
Baleen plates shorter and stiffer, with coarser fringe appropriate for filtering larger zooplankton and fish prey

9. Foraging biology of cetaceans8
Mysticetes: The filter feeders:
2. Balaenopteridae: Rorquals:
“Lunge feeders”
Throat pleats
Variable prey
Heads more compact than right whales
Baleen plates shorter and stiffer, with coarser fringe appropriate for filtering larger zooplankton and fish prey

10. Foraging biology of cetaceans9
Mysticetes: The filter feeders:
2. Balaenopteridae: Rorquals:
“Lunge feeders”
Throat pleats
Variable prey
Heads more compact than right whales
Baleen plates shorter and stiffer, with coarser fringe appropriate for filtering larger zooplankton and fish prey

11. Foraging biology of cetaceans10
Mysticetes: The filter feeders:
2. Balaenopteridae: Rorquals:
“Lunge feeders”
Throat pleats
Variable prey
Heads more compact than right whales
Baleen plates shorter and stiffer, with coarser fringe appropriate for filtering larger zooplankton and fish prey

12. Foraging biology of cetaceans11
Mysticetes: The filter feeders:
2. Balaenopteridae: Rorquals:
“Lunge feeders”
Throat pleats
Variable prey
Heads more compact than right whales
Baleen plates shorter and stiffer, with coarser fringe appropriate for filtering larger zooplankton and fish prey

13. Foraging biology of cetaceans12
Mysticetes: The filter feeders:
2. Balaenopteridae: Rorquals:
“Lunge feeders”
Throat pleats
Variable prey
Heads more compact than right whales
Baleen plates shorter and stiffer, with coarser fringe appropriate for filtering larger zooplankton and fish prey

14. Foraging biology of cetaceans13
Mysticetes: The filter feeders:
3. Eschrichtidae: Gray whales:
“Bottom feeders”
A few throat pleats
Variable prey types and foraging habitats
Heads generally similar to rorquals
Baleen plates short and stiff, with coarse fringe.

15. Foraging biology of cetaceans14
Mysticetes: The filter feeders:
3. Eschrichtidae: Gray whales:
“Bottom feeders”
A few throat pleats
Variable prey types and foraging habitats
Heads generally similar to rorquals
Baleen plates short and stiff, with coarse fringe.

16. Foraging biology of cetaceans15
Mysticetes: The filter feeders:
3. Eschrichtidae: Gray whales:
“Bottom feeders”
A few throat pleats
Variable prey types and foraging habitats
Heads generally similar to rorquals
Baleen plates short and stiff, with coarse fringe.

17. Foraging biology of cetaceans16
Mysticetes: The filter feeders:
3. Eschrichtidae: Gray whales:
“Bottom feeders”
A few throat pleats
Variable prey types and foraging habitats
Heads generally similar to rorquals
Baleen plates short and stiff, with coarse fringe.

18. Foraging biology of cetaceans17
Mysticetes: The filter feeders:
3. Eschrichtidae: Gray whales:
“Bottom feeders”
A few throat pleats
Variable prey types and foraging habitats
Heads generally similar to rorquals
Baleen plates short and stiff, with coarse fringe.

19. Foraging biology of cetaceans18
Mysticetes: The filter feeders:
3. Eschrichtidae: Gray whales:
“Bottom feeders”
A few throat pleats
Variable prey types and foraging habitats
Heads generally similar to rorquals
Baleen plates short and stiff, with coarse fringe.

20. Foraging biology of cetaceans19
Mysticetes: The filter feeders:
3. Eschrichtidae: Gray whales:
“Bottom feeders”
A few throat pleats
Variable prey types and foraging habitats
Heads generally similar to rorquals
Baleen plates short and stiff, with coarse fringe.

21. Foraging biology of cetaceans20
Mysticetes: The filter feeders:
3. Eschrichtidae: Gray whales:
“Bottom feeders”
A few throat pleats
Variable prey types and foraging habitats
Heads generally similar to rorquals
Baleen plates short and stiff, with coarse fringe.

22. Foraging biology of cetaceans21
Mysticetes: The filter feeders:
Cooperative feeding:
Rarely seen:
Best known examples involve humpback whales, which often display cooperation and division of labor when foraging on schooling prey.
Most often seen in association with use of bubble columns and screens

23. Foraging biology of cetaceans22
Mysticetes: The filter feeders:
Key feature associated with large
body size:
Ability to partition feeding
activity into discreet spatial
and temporal components
of life history;
Possible because of large energy storage capacity of the blubber layer, and the favorable surface to volume ratio associated with large body size.
Brazil
South Atlantic
Ocean
South Georgia