Newsletter 4 - Marine Mammal Institute - Oregon State University
Newsletter 4 - Marine Mammal Institute - Oregon State University
Newsletter 4 - Marine Mammal Institute - Oregon State University
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HATFIELD MARINE SCIENCE CENTER, NEWPORT, OR<br />
<strong>Marine</strong> <strong>Mammal</strong> <strong>Institute</strong><br />
Winter <strong>Newsletter</strong> December 2009<br />
Look to the future<br />
Hello dear friends. We are pleased to update you with news from the <strong>Marine</strong><br />
<strong>Mammal</strong> <strong>Institute</strong>. The funds you have contributed to the <strong>Marine</strong> <strong>Mammal</strong> <strong>Institute</strong> have<br />
provided us with an element of stability that is rare in an academic environment during<br />
these difficult economic times. THANK YOU! Having funds from the endowment has<br />
allowed us to keep the highly skilled people who make our program so successful. In the<br />
last four years, we have grown from just myself as a principle investigator to 3 faculty<br />
(adding Drs. Baker and Horning), resulting in group growth from 14 (faculty, staff, and<br />
students) to 28. These are great people doing exceptional work. At an October biennial<br />
meeting for the Society of <strong>Marine</strong> <strong>Mammal</strong>ogy, MMI contributed 20 papers and posters<br />
More from<br />
Bruce Mate<br />
on page 2
during the one week of workshops and formal presentations.<br />
More and more, MMI is recognized for its many worldwide<br />
academic collaborations and agency funding diversity,<br />
including the National <strong>Marine</strong> Fisheries Service (NMFS), Minerals<br />
Management Service (MMS), the Department of Energy<br />
(DOE), National Science Foundation (NSF) and the Department<br />
of Defense (DOD). I hope you are as proud as I am in the<br />
accomplishments we have achieved with your support!<br />
MMI is dedicated to becoming the international center of<br />
academic excellence in marine mammal ecology, conservation<br />
and ocean health. To a growing extent the university is<br />
encouraging collaborative studies as a means of reducing<br />
expenses and increasing efficiency. This is something MMI is<br />
trying to do by attracting shared positions with many OSU<br />
colleges so that new faculty can work in close proximity to<br />
one another to solve the complicated challenges our society<br />
places on marine resources. Regrettably, space is in such a<br />
premium at the Hatfield <strong>Marine</strong> Science Center, there is “no<br />
room at the inn”. In that regard, we have renewed our federal<br />
proposal to the National <strong>Institute</strong> of Standards and Technology<br />
(NIST) for a new building in Newport. Our previous effort,<br />
which required a $9 M non-federal match to acquire $14 M of<br />
federal funding, came apart during the last week of the <strong>Oregon</strong><br />
legislative session (which meets only 6 months every 2 years).<br />
There will be a short legislative session in February and we are<br />
hoping to acquire the needed match during that session to be<br />
eligible for the NIST grant (awards announced in March 2010).<br />
Besides MMI, the building would house the <strong>Marine</strong> Genomics<br />
and Genomics Program, and a proposed <strong>Marine</strong> Biodiscovery<br />
program looking for medical cures from marine organisms,<br />
including chemosynthetic species around deep-sea thermal<br />
vents.<br />
Things here have been busy and I want to bring you up to<br />
date on many exciting happenings.<br />
The Whale Telemetry Group (WTG) has been tagging<br />
eastern gray whales this fall along the central <strong>Oregon</strong> coast.<br />
Because gray whales are a<br />
near-shore species, we did<br />
this as a day-trip operation,<br />
trailering our 22' boat from<br />
port to port and over-nighting<br />
in hotels. Ladd Irvine, a<br />
recent COAS Masters student<br />
of mine, has been doing the<br />
tagging. Barb Lagerquist, a<br />
former MMI-Masters student<br />
in Fisheries & Wildlife, used to<br />
be our lead field person before<br />
getting married and having<br />
two children. Because we were<br />
“local”, she was able again to<br />
drive the boat during approaches and has not lost her touch. It<br />
is good to have her back in a field mode. Craig Hayslip (MS from<br />
U of WA) has been our main photographer for several years and<br />
is an important part of this project because we are using photos<br />
Territorial Seas Work<br />
The R/V Pacific Storm was engaged for 3 months, 24/7 this<br />
summer in measuring the <strong>Oregon</strong> Territorial seas as part of a<br />
College of Oceanic & Atmospheric Sciences program. It really paid<br />
its own way. It surveyed the nearshore sea floor to improve maps<br />
originally created over 60 years ago. The crew operated with<br />
a precise satellite GPS system that even took into the account<br />
the role of the vessel and state of the tide to identify the precise<br />
water depth.<br />
to evaluate the effects of tagging over time. Tomas Follett, our<br />
database manager, loves getting out into the field, but gets<br />
“chained to a desk” most of the time. In this field season he<br />
got to get out into the field and gain boat-driving experience.<br />
Jennifer Olson, and intern this fall from Colorado, has been<br />
taking biopsy samples and processing them. It takes five folks<br />
to tag whales. I only got out with them one day. They did such<br />
a great job, that they no longer “need” me out there. I am<br />
proud of them, but “Darn, I kind of liked that part myself”!<br />
When we are all out doing field work or at meetings, the office<br />
work is ably managed by Sheri Woods, Bonnie Anderson-<br />
Becktold, and Kathy Minta, who keep our many universitybased<br />
operations working smoothly.<br />
These animals, which were thought to be resident all<br />
throughout the summer/fall-feeding season moved around<br />
a great deal and very quickly. Within two weeks one animal<br />
was halfway up Vancouver Island, while another was in<br />
northern California. Virtually all the animals were identified<br />
from photographs so we have a known sighting history that<br />
goes back up to 15 years. Some of their movements this fall<br />
have tracked individuals to every area they have ever been<br />
sighted in throughout their entire lifetime. This is the first time<br />
we have tagged whales off <strong>Oregon</strong> and the reason was to test<br />
a new generation of tags that we may be using next year for<br />
the tagging of Western Gray whales off Sakhalin Island, Russia.<br />
I have gone to the International Whaling Commission meetings<br />
the last four years, in part to gain endorsements from the<br />
international community about tagging this most highly<br />
endangered species (relative to the gray whales along our<br />
coast). They were thought to be extinct in the 1970’s and now<br />
MMI <strong>Newsletter</strong> December 2009 2 OREGON STATE UNIVERSITY
number just 130 animals. Amazingly, we do<br />
not know where these animals go to breed<br />
and calve in the winter. Identifying that<br />
will aid conservation efforts and promote<br />
the recovery of this fragile population,<br />
who’s summer feeding habitat is an area of<br />
developing oil and gas production.<br />
Robyn Matteson did an outstanding<br />
job of defending her master’s thesis in<br />
oceanography recently. She collected<br />
and assembled the oceanographic data<br />
associated with blue whale concentrations<br />
at the Costa Rica Dome (CRD), during our<br />
spectacular cruise on the Pacific Storm<br />
800 miles west of Costa Rica in 2008. I<br />
hope you had an opportunity to see the<br />
2-hour National Geographic documentary<br />
which first<br />
aired in March,<br />
entitled<br />
“Kingdom<br />
of the Blue<br />
Whale”. It<br />
has received<br />
the highest rating of any program that has<br />
ever aired on the channel. The companion<br />
article in the March National Geographic<br />
magazine (“Still Blue”) is also the highest<br />
rated piece for this year’s issue. Not<br />
only did we identify the first calving area<br />
for blue whales anywhere in the world,<br />
they were also feeding and mating. Our<br />
collaborator, John Calambokidis maintains<br />
an extensive catalog of blue whales<br />
found in the eastern North Pacific and<br />
photographed untagged whales at the<br />
CRD. Most of the photos from the CRD did<br />
not match his catalog, which is thought to<br />
encompass at least 80 % of the west coast<br />
population. Thus, whales using the CRD<br />
to breed and calve also come from other<br />
areas, probably the central and western<br />
North Pacific. I would very much like to<br />
return to the CRD to tag whales and track<br />
them to these other feeding areas. We are<br />
also planning on how to do additional blue<br />
whale research in the winter off the Pacific<br />
coast of Baja, Mexico, where this may also<br />
be happening.<br />
During the NG-sponsored research,<br />
we encountered a dead blue whale floating<br />
in the western Santa Barbara channel. We<br />
helped perform a dissection, which showed<br />
it had been struck by a ship. This was one<br />
of 5 deaths of these remarkable animals<br />
reported in just 3 weeks in southern<br />
California. MMI tagging data help<br />
understand the seasonal distributions<br />
of whales and will suggest ways to<br />
reduce blue whale mortalities from<br />
ship strikes. Such research provides<br />
insights into how small changes in<br />
human activities can often make a<br />
big difference in the conservation and<br />
recovery of endangered species.<br />
Some of you will recall that<br />
MMI provided seed funding for Kelly<br />
Benoit-Bird in COAS to begin work<br />
with squid in the Gulf of California with<br />
Bill Gilly from Stanford <strong>University</strong>. This<br />
work provided a basis for our research<br />
on squid-eating<br />
Small changes in human activities<br />
can often make a big difference to<br />
the conservation and recovery of<br />
endangered species.<br />
sperm whales<br />
in the same<br />
area the next<br />
two years. As a<br />
result of those<br />
combined<br />
efforts, Kelly and Bill have received a<br />
three-year grant from NSF to further<br />
understand this elusive species and its<br />
trophic relationship to whales.<br />
This fall, MMI entered into a<br />
new collaborative relationship with<br />
the College of Engineering in which<br />
three senior students and a graduate<br />
student began working on tag<br />
development design issues as their<br />
capstone project. This collaboration<br />
with Dr. John Parmigiani and OSU<br />
alumnus Bill Reiersgaard has led to<br />
the submission of a National Ocean<br />
Partnership Program grant, which<br />
would continue these studies for two<br />
more years with additional professional<br />
involvement. Bill has been working with<br />
me for many years on tag designs. The<br />
engineering students will characterize<br />
the skin, blubber and muscle of whales,<br />
to make a synthetic testing environment<br />
out of ballistic gels (think “CSI” and the<br />
testing of bullet trajectories in flesh) and<br />
develop a virtual computer environment<br />
in which various tag designs can be<br />
modified and tested without having<br />
to put them out on a real whale. They<br />
will be using tissues collected by the<br />
<strong>Oregon</strong> <strong>Marine</strong> <strong>Mammal</strong> Stranding<br />
As you may recall, there is a great<br />
There is a great interest in<br />
harnessing wave energy off the<br />
<strong>Oregon</strong> Coast. We are examining<br />
the feasibility of using<br />
an acoustic device to protect<br />
whales if these buoy moorings<br />
become a collision hazard for<br />
the whales. Gray whales do not<br />
have any sophisticated sonar<br />
system. By emitting only low<br />
frequency sounds, they identify<br />
large features for navigation,<br />
but not smaller features like the<br />
4-6” diameter mooring cables.<br />
If problems develop with<br />
whales inadvertently running<br />
into these cables, there needs<br />
to be a way to keep them at a<br />
distance. With all the negative<br />
concerns about acoustics and<br />
whales, this may be an area<br />
where a low level of sound may<br />
actually save whale lives. Next<br />
year, we will test a device in<br />
the migration stream to see if<br />
it can divert gray whales up to<br />
500 yards. If so, this will be the<br />
first device of its sort to keep<br />
whales out of harms way from<br />
other calamities as well, like oil<br />
spills.<br />
Network (OMMSN), led by Jim Rice, the<br />
MMI stranding coordinator, who works<br />
closely with the College of Veterinary<br />
Medicine’s Veterinary Diagnostic Lab.<br />
I hope you will see the advances I<br />
have reported here and those elsewhere<br />
in this issue as an indication of what a<br />
good investment your gifts to MMI have<br />
been. I would be very grateful to have<br />
your continued support this coming<br />
year….and don’t forget us in your estate<br />
planning too!<br />
MMI <strong>Newsletter</strong> December 2009 3 OREGON STATE UNIVERSITY
New Faces in MMI<br />
Alana Alexander<br />
Julia Hager<br />
Joining the <strong>Marine</strong> <strong>Mammal</strong> <strong>Institute</strong> in May 2009 as a parttime<br />
research technician in the Pinniped Ecology Applied Research<br />
Laboratory (PEARL), Julia came with a Master’s degree<br />
in <strong>Marine</strong> Biology from Bremen, Germany. During this time<br />
she was engaged in the ecology of Antarctic ice algae and now<br />
would like to gain insights into the marine mammal research.<br />
Under the supervision of the lab head Dr. Markus Horning<br />
and the Faculty Research Assistant Kim Raum-Suryan she<br />
is involved in the study about the attendance patterns and<br />
entanglement rates of Steller sea lions at Sea Lion Caves, near<br />
Heceta Head. Additionally, Julia is preparing her PhD project<br />
which will address the sensory system of pinnipeds.<br />
Alana is an International Fulbright Science and Technology<br />
awardee (2008-2010) from New Zealand. She arrived at OSU in<br />
September 2008 after completing her BSc(Hons) degree in 2006,<br />
and then working for two years as a research assistant at The<br />
<strong>University</strong> of Auckland, New Zealand. Her BSc(Hons) dissertation<br />
focused on the low level of mitochondrial DNA (mtDNA)<br />
control region diversity found in long-finned pilot whales (Globicephala<br />
melas). For her PhD, Alana is extending this analysis<br />
to the sperm whale (Physeter macrocephalus), as well as<br />
updating previous research on global and regional geneflow by<br />
sequencing longer regions of the mtDNA control region and<br />
using DNA from previously unsampled areas.<br />
Angie Sremba<br />
Angie began her career at <strong>Oregon</strong> <strong>State</strong> <strong>University</strong> as an intern in<br />
the 2006 Research Experience for Undergraduate (REU) program.<br />
After graduating from Kalamazoo College, Kalamazoo, Michigan in<br />
2007, she worked as a research assistant with the Cooperative<br />
<strong>Institute</strong> for <strong>Marine</strong> Resources Studies (CIMRS) to finalize the<br />
research she had begun as an intern. Before starting graduate<br />
school, she had the opportunity to participate in the winter 2008<br />
cetacean research field season with the Universidad de Baja<br />
California Sur in La Paz, Mexico. During this time, she helped with<br />
photo-identification and biopsy collection on cruises in the Gulf of<br />
California and spent two months working with gray whales<br />
(Eschrichtius robustus) in the San Ignacio Lagoon with Dr. Steven<br />
Swartz. She began her MSc with Scott Baker in the fall of 2009 working<br />
in the Cetacean Conservation and Genetics laboratory. For her<br />
MSc thesis, Angie will be studying the genetic diversity of the blue<br />
whale (Balaenoptera musculus) both in the eastern tropical North<br />
Pacific and Antarctic.<br />
MMI <strong>Newsletter</strong> December 2009 4 OREGON STATE UNIVERSITY
Three large cetacean strandings<br />
occurred in <strong>Oregon</strong> this past spring<br />
Reported by Jim Rice<br />
<strong>Oregon</strong> <strong>Marine</strong> <strong>Mammal</strong> Stranding Coordinator<br />
In early April, a fresh dead adult female gray whale (Eschrichtius<br />
robustus) was found on the beach at Washburn <strong>State</strong> Park, just north of<br />
Heceta Head. She was extremely emaciated, and there was no evident<br />
trauma to the body. Her posture, lying belly-down flat on the sand,<br />
suggests that she died on the beach or in shallow water shortly before<br />
she was reported to the stranding network. We suspect the immediate<br />
cause of death was starvation. A necropsy was conducted immediately<br />
Dead gray whale found near Heceta Head<br />
and tissue samples were collected and submitted to the Veterinary<br />
Diagnostic Laboratory at OSU’s College of Veterinary Medicine in Corvallis. Pathology results determined the whale had<br />
ovarian cancer. The carcass was buried on site by the <strong>Oregon</strong> Department of Parks and Recreation the following day.<br />
On March 6, a distressed whale was sighted by Coast Guard helicopter in the surf at Heceta Beach, in Florence.<br />
Members of the <strong>Oregon</strong> <strong>Marine</strong> <strong>Mammal</strong> Stranding Network (OMMSN) responded and found the whale stuck on a sandbar<br />
and getting knocked over by waves. As the tide came in, the whale managed to free itself and began swimming again. It<br />
was observed by helicopter swimming weakly northward,<br />
parallel to the beach on the edge of the surf zone. The<br />
following day, the Coast Guard again searched the waters<br />
for the whale during their regular flyovers, but no sightings<br />
of the animal were made. Then, at approximately 5:00<br />
PM, a passerby reported a dead whale on a remote beach<br />
immediately north of Sea Lion Caves. An investigation<br />
of the carcass commenced the following morning, but<br />
by then it had been moved by the tide to its final resting<br />
place, at Devil’s Elbow <strong>State</strong> Park, adjacent to Heceta Head<br />
Lighthouse.<br />
Stranding network members spent much of Sunday<br />
examining the carcass, taking measurements, photographs,<br />
A live fin whale had stranded alive two days earlier a few miles and various tissue samples.<br />
away, but made it back into the water. It subsequently died and The whale was found to be<br />
floated to this beach at Heceta Head where it was buried.<br />
a sub-adult male fin whale<br />
(Balaenoptera physalus), with no apparent signs of injury that could immediately be ascribed<br />
as a cause of death (ship strike or fishery entanglement, for example). Its emaciated condition<br />
suggested that the whale had likely been sick for some time before coming ashore. The<br />
carcass was buried on site by the <strong>Oregon</strong> Department of Parks and Recreation on Monday,<br />
March 9. Just prior to burial, samples for archiving were collected. A thorough necropsy to<br />
determine cause of death was not conducted, as <strong>State</strong> Parks managers insisted that the<br />
carcass not be taken apart on the beach.<br />
On the stormy night of May 13, a live sperm whale calf was reported coming ashore at the<br />
base of a cliff in Depoe Bay. It was later found dead in a nearby cove with no beach access. On<br />
the following day the carcass was found floating offshore by Carrie Newell of Whale Research<br />
Excursions. She graciously brought a response team from the <strong>Marine</strong> <strong>Mammal</strong> <strong>Institute</strong> on<br />
her zodiac to collect samples of skin, blubber, lesions, and intestine. It is believed that the<br />
calf became lost and disoriented after becoming separated from its mother. We received no<br />
reports of sightings of adult sperm whales in the area.<br />
Further details, photos and maps can be found at www.mmi.oregonstate.edu/OMMSN<br />
A sperm whale calf stranded at an<br />
inaccessible beach at Depoe Bay.<br />
MMI <strong>Newsletter</strong> December 2009 5 OREGON STATE UNIVERSITY
Untangling the mystery of<br />
entangled Steller sea lions:<br />
first steps toward a solution<br />
A followup story by Kim Raum-Suryan<br />
Since 2005, we have been collecting<br />
data about Steller sea lions entangled<br />
in marine debris and derelict fishing<br />
gear off two haul-out sites in <strong>Oregon</strong>,<br />
Sea Lion Caves and Cascade Head. We<br />
noticed that many of the younger sea<br />
lions (1 to 3 years-of-age) had thick<br />
black bands around their necks. As<br />
the animals grow, these bands start<br />
cutting into the neck, eventually causing<br />
severe injury and death if the bands do<br />
not break off (very unlikely). At first,<br />
we were unsure about the source of<br />
this entangling debris. However, we<br />
realized that these black rubber bands<br />
are the same bands that are used on<br />
commercial and sport crab pots. We<br />
have subsequently found some of these<br />
bands washed up on <strong>Oregon</strong> beaches.<br />
The mystery is how these sea lions are<br />
getting these bands around their necks<br />
and what we can do to help prevent<br />
this problem. The loose ‘replacement’<br />
bands are either being lost overboard<br />
vessels at sea or the sea lions are<br />
somehow becoming entangled in the<br />
bands while on the crab pots. We<br />
suggested cutting the loops, making<br />
them into ‘strips’ so if they come off<br />
the crab pots, they lose the loop and<br />
are no longer an entanglement hazard<br />
to marine animals. Another idea is to<br />
better secure the ‘replacement’ bands<br />
while on board the vessels so they don’t<br />
accidentally go overboard and present<br />
an entanglement hazard. We contacted<br />
the <strong>Oregon</strong> Dungeness Crab Commission<br />
(ODCC) about this problem. At first, we<br />
met with resistance, that there is “no<br />
way” these bands could be coming from<br />
the commercial crab fishery. However,<br />
after observing newly entangled young<br />
sea lions each year for the past 4 years,<br />
presenting the data and photos at a<br />
meeting with the director of the ODDC,<br />
crab fishers, <strong>Oregon</strong> Department of Fish<br />
and Wildlife biologists, and <strong>Oregon</strong> Sea<br />
Grant personnel, there was a change of<br />
heart and the ODDC agreed to help us<br />
bring awareness of this issue to the crab<br />
fleet. As part of this effort, the ODCC has<br />
printed laminated copies of a photo of a<br />
Steller sea lion with a black rubber band<br />
around its neck and has listed ways crab<br />
fishers can help reduce the problem of<br />
entanglements. They plan to post these<br />
at ports throughout <strong>Oregon</strong>. They also<br />
presented our findings at the recent 2009<br />
<strong>Oregon</strong> Dungeness Crab Summit held in<br />
Newport, <strong>Oregon</strong>. We are pleased that<br />
the ODDC has agreed to help us bring<br />
awareness about this problem, but we<br />
have a long road ahead of us to solve this<br />
problem.<br />
New study of Steller sea lions<br />
suggests death by predation<br />
may be higher<br />
(Source - Mark Floyd, OSU)<br />
A pioneering project that implants lifelong<br />
monitors inside of Steller sea lions<br />
to learn more about why the number<br />
of these endangered marine mammals<br />
has been declining – and remains low<br />
in Alaska – is beginning to provide<br />
data, and the results are surprising to<br />
scientists.<br />
Four out of five of the data sets that<br />
researchers have recovered indicate that<br />
the sea lions died from traumatic causes<br />
– most likely, attack from transient killer<br />
whales.<br />
This comes as a surprise to many<br />
scientists and resource managers who<br />
previously thought that recent sea lion<br />
population trends are largely attributable<br />
to depressed birth rates, a loss of<br />
fecundity, or poor nutrition, according<br />
to Markus Horning, a pinniped specialist<br />
with the <strong>Marine</strong> <strong>Mammal</strong> <strong>Institute</strong> at<br />
<strong>Oregon</strong> <strong>State</strong> <strong>University</strong> and principal<br />
investigator in the study.<br />
“This obviously is a very small sample<br />
so we cannot overstate our conclusions,”<br />
Horning said, “but the fact that four<br />
out of five deceased Steller sea lions<br />
that we received data from met with a<br />
sudden, traumatic<br />
death is well beyond<br />
what conventional<br />
thought would have<br />
predicted. It could<br />
be coincidence…or<br />
it could mean that<br />
predation is a much<br />
more important factor<br />
than has previously<br />
been acknowledged.”<br />
Results of the<br />
study are being<br />
published in the<br />
journal Endangered Species Research<br />
and results were presented at a meeting<br />
of the Society for <strong>Marine</strong> <strong>Mammal</strong>ogy in<br />
Quebec City.<br />
The science behind the discovery<br />
is a story within itself. The researchers<br />
worked with Wildlife Computers, Inc., in<br />
Redmond, Wash., to develop a tag that<br />
could be implanted in the body cavity of<br />
sea lions and remain there during their<br />
life span. Conventional externally applied<br />
tags rarely have the battery power to<br />
transmit data for longer than a year and<br />
are shed during the annual molt – thus<br />
information about sea lion mortality is<br />
difficult to obtain.<br />
These new tags, however, stay<br />
within the sea lion until its death,<br />
recording temperatures for as long as<br />
eight to 10 years. When an animal dies,<br />
and either decomposes or is torn apart<br />
by predators, the tags are released and<br />
send a signal to a satellite that transmits<br />
it to Horning’s lab at OSU’s Hatfield<br />
<strong>Marine</strong> Science Center in Newport, Ore.<br />
“We can tell whether an animal died<br />
by acute death through the temperature<br />
change rate sensed by the tags and<br />
whether the subsequent transmission of<br />
a signal is immediate or delayed,” said<br />
Horning, who is an assistant professor of<br />
fisheries and wildlife at OSU.<br />
Horning and his collaborator, Jo-<br />
Ann Mellish, have tested cooling and<br />
decomposition rates of sea lions on<br />
animals that have died from stranding or<br />
other causes. They’ve also inserted tags<br />
within those animals to see how long<br />
it would take before the signal would<br />
transmit based on whether an animal<br />
was on the beach, was deep at sea, or<br />
was torn apart by predators.<br />
continued on page 7<br />
MMI <strong>Newsletter</strong> December 2009<br />
6 OREGON STATE UNIVERSITY
Their protocol for inserting tags<br />
within live Steller sea lions was<br />
developed from initial deployments on<br />
non-threatened, stranded California<br />
sea lions at the <strong>Marine</strong> <strong>Mammal</strong> Center<br />
in Sausalito, Calif.<br />
“We wanted to make sure<br />
there was no adverse impact on the<br />
animals,” Horning said, “and there<br />
wasn’t.” Since 2005, Horning and<br />
his colleagues at the Alaska Sea Life<br />
Center in Seward have implanted<br />
tags into 27 Steller sea lions that were<br />
captured and released off the coast<br />
of Alaska. Since that time, they have<br />
received data from five animals – at<br />
least four of which appeared to die<br />
from traumatic deaths, based on the<br />
rate of tag cooling and immediate<br />
signal transmission. Horning said the<br />
tags can precisely identify the moment<br />
an animal died from temperature<br />
data. And while they are confident<br />
in their ability to determine whether<br />
the death was caused by predation<br />
or non-traumatic causes, identifying<br />
the actual predator is admittedly a bit<br />
of guesswork, Horning says. “There<br />
are only a couple of species that are<br />
known to target sea lions as prey,”<br />
he pointed out. “Orcas are not only<br />
common in that region of Alaska, they<br />
also have been observed preying on<br />
sea lions. Some species of sharks are<br />
known to attack sea lions, but they<br />
aren’t as common in those waters and<br />
there haven’t been any observations<br />
of predation in the study area.” If<br />
predation of Steller sea lions is more<br />
prevalent than previously thought,<br />
Horning said, there are implications for<br />
management. “If the proportion of sea<br />
lions killed by predation in our study<br />
was applied to population models,<br />
we estimate that more than half of<br />
the female Steller sea lions would be<br />
consumed by predators before they<br />
have a chance to reproduce,” Horning<br />
said. “We recognize that this is a very<br />
coarse estimate based on a small<br />
sample size. “But we hope this serves<br />
as a wakeup call to begin looking more<br />
closely into the actual role of predation<br />
as a determinant in Steller sea lion<br />
populations.”<br />
These newly developed tags were also featured<br />
in a brief newsclip in the Oct 23 2009 issue of<br />
the journal SCIENCE (Vol. 326, p. 505).<br />
‘Bycatch’ whaling — a growing threat to coastal whales<br />
(Source - Science News - June 29, 2009)<br />
Scientists are warning that a<br />
new form of unregulated whaling has<br />
emerged along the coastlines of Japan<br />
and South Korea, where the commercial<br />
sale of whales killed as fisheries<br />
“bycatch” is threatening coastal stocks<br />
of minke whales and other protected<br />
species.<br />
Scott Baker, associate director of the<br />
<strong>Marine</strong> <strong>Mammal</strong> <strong>Institute</strong><br />
at <strong>Oregon</strong> <strong>State</strong> <strong>University</strong>,<br />
says DNA analysis of whalemeat<br />
products sold in<br />
Japanese markets suggests<br />
that the number of whales<br />
actually killed through this<br />
“bycatch whaling” may<br />
be equal to that killed through Japan’s<br />
scientific whaling program – about 150<br />
annually from each source.<br />
Baker, a cetacean expert,<br />
and Vimoksalehi Lukoscheck of<br />
the <strong>University</strong> of California-Irvine<br />
presented their findings at the<br />
recent scientific meeting of the<br />
International Whaling Commission<br />
(IWC) in Portugal. Their study found that<br />
nearly 46 percent of the minke whale<br />
products they examined in Japanese<br />
markets originated from a coastal<br />
population, which has distinct genetic<br />
characteristics, and is protected by<br />
international agreements.<br />
Their conclusion: As many as<br />
150 whales came from the coastal<br />
population through commercial bycatch<br />
whaling, and another 150 were taken<br />
from an open ocean population through<br />
Japan’s scientific whaling. In some past<br />
years, Japan only reported about 19<br />
minke whales killed through bycatch,<br />
though that number has increased<br />
recently as new regulations governing<br />
commercial bycatch have been adopted,<br />
Baker said.<br />
Japan is now seeking IWC agreement<br />
to initiate a small coastal whaling<br />
program, a proposal which Baker says<br />
should be scrutinized carefully because<br />
of the uncertainty of the actual catch<br />
and the need to determine appropriate<br />
population counts to sustain the distinct<br />
stocks.Whales are occasionally killed<br />
in entanglements with fishing nets and<br />
the deaths of large whales are reported<br />
by most member nations of the IWC.<br />
Japan and South Korea are the only<br />
countries that allow the commercial<br />
sale of products killed as “incidental<br />
bycatch.” The sheer number of whales<br />
represented by whale-meat products on<br />
the market suggests that both countries<br />
have an inordinate amount of bycatch,<br />
Baker said.“The sale<br />
of bycatch alone<br />
supports a lucrative<br />
trade in whale meat<br />
at markets in some<br />
Korean coastal<br />
cities, where the<br />
wholesale price of<br />
an adult minke whale can reach as high<br />
as $100,000,” Baker said. “Given these<br />
financial incentives, you have to wonder<br />
how many of these whales are, in fact,<br />
killed intentionally.”<br />
In Japan, whale-meat products<br />
enter into the commercial supply chain<br />
that supports the nationwide distribution<br />
of whale and dolphin products for<br />
human consumption, including products<br />
from scientific whaling. However, Baker<br />
and his colleagues have developed<br />
genetic methods for identifying the<br />
species of whale-meat products and<br />
determining how many individual<br />
whales may actually have been killed.<br />
Baker said bycatch whaling also<br />
serves as a cover for illegal hunting, but<br />
the level at which it occurs is unknown.<br />
In January 2008, Korean police launched<br />
an investigation into organized illegal<br />
whaling in the port town of Ulsan, he<br />
said, reportedly seizing 50 tons of minke<br />
whale meat.<br />
Other protected species of large<br />
whales detected in market surveys<br />
include humpbacks whales, fin whales,<br />
Bryde’s whales and critically endangered<br />
western gray whales. The entanglement<br />
and death of western or Asian gray<br />
whales is of particular concern given the<br />
extremely small size of this endangered<br />
populations, which is estimated at only<br />
100 individuals.<br />
It will be published in a forthcoming<br />
issue of the journal Animal Conservation.<br />
the wholesale price of<br />
an adult minke whale<br />
can reach as high as<br />
$100,000<br />
MMI <strong>Newsletter</strong> December 2009 7 OREGON STATE UNIVERSITY
<strong>Marine</strong> <strong>Mammal</strong> <strong>Institute</strong><br />
Hatfield <strong>Marine</strong> Science Center<br />
2030 SE <strong>Marine</strong> Science Drive<br />
Newport, OR 97365<br />
http://mmi.oregonstate.edu<br />
Record numbers seen<br />
The population of California sea lions along the <strong>Oregon</strong><br />
coast appears higher than normal this year. Biologists say<br />
it happens every few years, and it may be due to El Nino,<br />
the Pacific Ocean warming cycle. The scientists say El Nino<br />
has pushed many of the so-called “forage fish” — such<br />
as herring, squid, hake, sardine and anchovies — north<br />
from California into <strong>Oregon</strong> waters. Jim Rice of <strong>Oregon</strong><br />
<strong>State</strong> <strong>University</strong> says the OSU <strong>Marine</strong> <strong>Mammal</strong> Stranding<br />
Network has gotten plenty of calls in the past month about<br />
the sea lions.<br />
But Rice says don’t worry, the sea lions are not stranded<br />
— they’re just following the food, and it’s getting a little<br />
crowded.<br />
Cover photo by Anthony Lombardi<br />
Back cover by Craig Hayslip