Looking back on the various comments that followed the death of
the killer whale named Granny, I realized that there were a couple
of thought-provoking tributes that I never shared with readers of
Granny, designated J-2, was believed to be more than 100 years
old, and she was the obvious leader for many of the Southern
Resident orcas that frequent Puget Sound. Granny went missing last
fall and was reported deceased at the end of the year by the Center
for Whale Research. See
Water Ways, Dec. 30.
Some tributes to Granny were written and posted soon after her
death notice, including one by Ken Balcomb of the Center
for Whale Research. I posted my thoughts along with some others in
Water Ways on Jan. 4.
UPDATE, Jan. 2
The Center for Whale Research has announced that J-2, known as
“Granny,” has apparently died. The oldest orca among the three
Southern Resident pods, Granny was one of the first Southern
Residents identified when Ken Balcomb began his Orca Survey in
1976. At the time, she was estimated to be at least 45 years old
and probably in her 70s, putting her likely age at more than 100.
Ken’s tribute to Granny can be read on the Center for Whale Research
website. More to come.
When it comes to the killer whales that frequent Puget Sound, a
year can make all the difference in the world. Last year at this
time, we were celebrating a remarkable baby boom — eight new orca
calves over the previous 12 months. See
Water Ways, Dec. 16, 2015.
Another new baby was added in January of this year, for a total
of nine. But if 2015 was the boom year, then 2016 turned out to be
a major bust, with six orca deaths recorded during the calendar
The latest death among the Southern Residents was J-34, an
18-year-old male named DoubleStuf. He was found dead floating near
Sechelt, B.C., northwest of Vancouver, on Dec. 20. Check out the
tribute and wonderful photos
on Orca Network’s webpage.
Humpback whales have been making the news for their organized
“rescues” — seemingly heroic efforts in which the humpbacks have
intervened in attacks by killer whales against other marine
The humpbacks have not only protected their own calves but they
have gone well out of their way to protect gray whales, minke
whales, Dall’s porpoises, Steller sea lions, California sea lions,
Weddell seals, crabeater seals, harbor seals, northern elephant
seals and even ocean sunfish, according to researchers.
The latest incident, in which humpbacks reportedly intervened in
a killer whale attack on a Steller sea lion, is said to be the
first reported incident in the Salish Sea. The incident took place
last week off Sooke, BC, about 20 miles west of Victoria.
“What we witnessed was pure aggression,” Capt. Russ Nicks of BC
Whale Watch Tours of Victoria said in a
news release from Pacific Whale Watch Association. “We had four
humpbacks trumpeting, rolling on their sides, flukes up in the air
“The killer whales split many times into two groups, with one
that appeared to try to draw the humpbacks away from the sea lion.
The other group would go in for the attack while the humpbacks were
safely away – but then they’d get in the middle of it again,
fighting the orcas off. It was amazing to watch.”
These killer whales were of the transient variety, a subspecies
of killer whales that eats marine mammals, as opposed to the
resident orcas that each fish.
The same attack and rescue was viewed by naturalist Alethea
Leddy of Port Angeles Whale Watch Company, as reported in the news
“We got there in time to see some crazy surface activity, with
humpback whales splashing in the distance along with orcas. Then
two humpbacks surfaced next to us trumpeting, and the next thing we
know there were four humpbacks, possibly six, all defending the sea
“The water boiled all around as the orcas tried to separate the
sea lion from the humpbacks. It was a wild scene, with the
humpbacks even circling the sea lion trying to keep him safe while
he frantically struggled to get his breath.
“The anxiety of the humpbacks was palpable, and they took turns
diving and slashing at the orcas. This life-and-death drama went on
and on until the four transient orcas, known as the T100 family,
moved off in the distance. As they did, we saw the sea lion appear
next to the humpbacks being guarded and escorted in the opposite
“This was an unbelievable encounter. Hats off to our courageous
humpbacks and best wishes to our little Steller sea lion, survivor
for another day!”
In July, 14 marine mammal experts reported on 115 apparent
rescue efforts by humpback whales during what appeared to be killer
whale attacks on other species of marine mammals. Their report
appeared in the journal Marine
Reasons for these rescue efforts are open to much speculation,
but the researchers noted that evidence is mounting in favor of a
belief that killer whales that eat marine mammals, called MEKW,
attack young humpback whales more often than commonly reported.
“Clearly, MEKW predation, even if rarely observed and targeting
mainly calves and subadults, represents a threat to humpbacks that
is persistent, widespread, and perhaps increasing,” the report
states. “As such, humpbacks could be expected to show some specific
anti-predator behaviors, and indeed some have been suggested. Ford
and Reeves (2008) summarized the defensive capabilities of baleen
whales faced with killer whale attack, and they identified two
general categories of response.
“Balaenopterid rorquals (including fin whales and minke whales)
use their high speed and hydrodynamic body shape to outrun killer
whales and were classified as flight species. The
generally more rotund and slower-swimming species — right whales,
bowhead whales, gray whales and humpback whales — apparently rely
on their bulk and powerful, oversized appendages (tail and
flippers) to ward off attackers. This group was categorized as
Of course, it is one thing for the humpbacks and other baleen
whales to take a defensive posture. It is quite another thing for
them to go after killer whales when another species of marine
mammal is under attack.
In the report, humpbacks initiated encounters with MEKWs 58
percent of the time, while the killer whales initiated contact 42
percent of the time — at least for those cases when the killer
whale ecotype could be identified as marine mammals eaters. On a
few occasions when known fish-eating killer whales were involved,
the encounter was relatively benign, the researchers said.
The video, shot by BBC filmmakers, show a pair of humpback
whales attempting to prevent a group of orcas from killing a gray
whale calf. In this case, the effort was unsuccessful.
When humpbacks went to the rescue of other marine mammals, it
appears that the rescuers were generally a mixture of males and
females, according to the report. Humpback postures, whether
attacking or defending, involved slapping their flukes on the
surface, slashing from side to side, bellowing, persuing and
flipper slapping. The length of battles reported ranged from 15
minutes to seven hours. In the end, the prey that was at the center
of the battles was killed 83 percent of the time — at least for
those cases when the outcome was known.
“The humpback whale is, to our knowledge, the only cetacean that
deliberately approaches attacking MEKWs and can drive them off,
although southern right whales may also group together to fend off
MEKWs attacking other right whales,” the researchers stated, adding
that humpbacks’ powerful flippers covered in sharp barnacles can
shred the flesh of their opponents.
When in hunting mode, transient killer whales are generally
silent, not making much noise. Once an attack begins, they become
more vocal, perhaps to coordinate the attack. It appears that
humpbacks respond to killer whale vocalizations from distances well
out of sight of the attack.
The reasons the humpbacks would get in a fight with killer
whales to save another species are listed in three categories:
Kin selection: Protecting an offspring or
closely related animal.
Reciprocity: Protecting unrelated animals,
generally as part of a social organization.
Altruism: Benefitting another animal at some
cost to the one taking action.
It is possible, the researchers conclude, that humpbacks could
be improving their individual and group fitness to fend off attacks
against their own by protecting other species. One idea is that the
killer whales may think twice about attacking a humpback of any
“We suggest,” they write, “that humpbacks providing benefits to
other potential prey species, even if unintentional, could be a
focus of future research into possible genetic or cultural drivers
of interspecific altruism.”
I have some bleak news to share about our Southern Resident
killer whales, which normally frequent Puget Sound at this time of
J-14, a 42-year-old female named Samish, has gone missing and is
presumed dead, while J-28, a 23-year-old orca mom named Polaris,
may be living out her final days.
“Things are shaping up to be pretty bad,” said Ken Balcomb of
the Center for Whale
Research, who keeps tabs on the orca population. “J-28 is
looking super-gaunt, and I would say she is within days of her
The saddest part of my conversation with Ken this morning was to
hear him say that Polaris’ 7-month-old calf would become an orphan
and probably will not survive without his mother. That’s the
typical outcome for an orphan of that age, Ken said, although there
is a chance that the young male will be adopted by his
The calf, J-54, is still nursing, but he is close to weaning,
Ken noted. He is the newest calf born into the three Southern
Resident pods and is part of the “baby boom” of nine orcas born
between December 2014 and December 2015. So far, only one of those
calves, J-55, has died.
After my conversation with Ken, the Center for Whale Research
posted a news release about the death of Samish. Orca observers on
the water have known that she was missing for some time now.
As of today, J pod was on its way out through the Strait of Juan
de Fuca, no doubt searching for food. The chinook salmon run has
been very low this summer.
“Historically, at this time of year, we would see nice little
bunches (of orcas) swimming back and forth in front of the house,”
said Ken, who lives on the west side of San Juan Island. But this
year, the whales have broken up into small family groups and are
traveling around in seemingly random patterns, presumably in search
of whatever salmon they can find.
“Even the fishermen aren’t getting much this year,” Ken
To gauge a killer whale’s condition, researchers consider the
overall shape of its body. Without adequate fish — primarily
chinook salmon — an orca grows thinner as the body fat declines. As
conditions grow worse, a depression develops behind the blow hole.
This sunken condition — which Polaris has developed — is called
“peanut head.” So far, none of the other animals have been observed
in such a dire condition.
I’ve often been told by medical experts that when a killer whale
loses weight it can be a sign of a major problem, such as a disease
that makes them incapable of hunting to their normal ability. But a
shortage of food can exacerbate the condition.
“We have been telling the government for years that salmon
recovery is essential for whale recovery,” Ken said.
He blames the salmon decline on longtime mismanagement of wild
salmon stocks — including damage to habitat, over-fishing and
excess hatchery stocks in both Canada and the U.S. One of the
quickest ways to increase the chinook population for these whales
is to take out the Snake River dams, he said.
Rebuilding salmon runs on the Elwha River will help, Ken said,
but the number of fish is small compared to the potential of the
Snake River, which flows into the Columbia and produces salmon that
can be caught in the ocean.
“I’m trying to get the marine mammal people to talk to the
salmon people,” Ken said. “Fish have been a political problem for a
long time, and we are not solving the salmon issue.”
Money spent on law enforcement to make sure whale watchers don’t
get too close to the orcas would be better spent on education —
specifically on educating lawmakers about the needs of salmon and
killer whales, he quipped.
As of July 1 — the date of the annual orca census — the
population of the three Southern Resident pods stood at 83. That’s
the number that will be reported to the federal government. Since
then, Samish has gone missing, so the ongoing count falls to 82,
pending the status of Polaris and her son.
Samish was considered part of the J-2 (“Granny”) family group.
Her living offspring are Hy’shqa (J-37), Suttles (J-40) and
Se-Yi’-Chn (J-45). Samish was the grandmother to Hy-Shqa’s
4-year-old son T’ilem I’nges.
Polaris is the first offspring of Princess Angeline (J-17), who
is still living. Her first offspring, a female named Star (J-46),
is now 7 years old. J-54 is her second offspring.
It is fairly well known that the three pods of killer whales
that frequent Puget Sound are listed as endangered under the
Endangered Species Act. It is also well known that their primary
prey — chinook salmon — are listed as threatened.
It can’t be good that the whales are struggling to find enough
to eat, but we are just beginning to learn that the situation could
be dire for orca females who become pregnant and need to support a
growing fetus during times of a food shortage.
Sam Wasser, a researcher known for figuring out an animal’s
condition from fecal samples, recently reported that about
two-thirds of all orca pregnancies end in miscarriage. And of those
miscarriages, nearly one-third take place during the last stage of
pregnancy — a dangerous situation for the pregnant female.
In a story published today in the Encyclopedia
of Puget Sound, I report on Sam’s latest studies, along with
other work by a team of biologists who are using unmanned aircraft
(drones) to keep track of the physical condition of the Southern
Resident orcas, including pregnant moms.
Sam’s latest study involves measuring hormones in killer whales,
which can tell us a lot about a whale’s condition. The story of how
hormones change under varying conditions is a little complicated,
but I hope I was able to explain in my article how this works. When
adding the effects of toxic chemicals that mimic hormones, we begin
to understand the conditions that may be critical to the whales’
long-term survival or their ultimate extinction.
One longtime assumption, which may be shot down by the hormone
studies, is that the whales’ most difficult time for food comes in
winter, when salmon are generally scarce. These new studies by Sam
and his colleagues suggest that the greatest problem comes in the
spring, when the whales return to Puget Sound to discover that
spring runs of chinook salmon can no longer be found — at least not
in significant numbers.
The work with a drone carrying a high-resolution camera is
providing precise measurements about the length and width of each
killer whale. Pregnant females are especially interesting, and it
will be important to document whether physical changes observed in
the drone study can be correlated with hormonal changes seen in the
“We’ve moved toward some great sophisticated technology,” Lynne
Barre told me. “These great technologies combined can tell us more
than any one method can … such as when and where food limitations
might be affecting their health and reproduction.”
Lynne heads NOAA’s Protected Resources Division in Seattle and
oversees recovery efforts for the endangered Southern
By the end of this year, NOAA is expected to release its
five-year status report on the Southern Resident orcas. In addition
to reporting on many new findings, the document will re-examine the
risk of extinction for these killer whales and consider whether
actions proposed to help them have been carried out.
Last year, the Southern Residents were listed among eight
endangered species across the country that are headed for
extinction unless recovery actions can be successful. The eight,
selected in part because of their high profiles, are known as
“Species in the Spotlight.” In February, five-year action plans
were released for all eight species.
The plan called
“Priority Actions for Southern Resident Killer Whales” (PDF 2
mb) focuses on three primary factors affecting the whales’
survival: a shortage of food, high levels of toxic chemicals and
effects of vessels and noise. The concise 15-page document
describes some of the work being carried out on behalf of the
whales, although new ideas are coming forth all the time.
When Lolita, a female orca held captive since 1970, was listed
among the endangered population of Southern Resident killer whales,
advocates for Lolita’s release were given new hope. Perhaps the
listing would help Lolita obtain a ticket out of Miami Seaquarium,
where she has lived since the age of 5.
But a U.S. district judge ruled last week that the Endangered
Species Act could not help her. While the federal law prohibits
human conduct likely to “gravely threaten the life of a member of a
protected species,” it cannot be used to improve her living
conditions, according to the
ruling (PDF 3.3 mb) by Judge Ursula Ungaro in the Southern
District of Florida.
“We very much disagree with the decision, and we will be
appealing it,” said attorney Jared Goodwin, who represents the
plaintiffs — including the People for the Ethical Treatment of
Animals (PETA), the Animal Legal Defense Fund and Orca Network.
Over the objections of attorneys for Miami Seaquarium, the judge
said the plaintiffs have a right to sue the aquarium, but Lolita’s
care and well-being falls under a different law: the Animal Welfare
The judge noted that the National Marine Fisheries Service,
which is responsible for marine species under the ESA, had
previously stated that keeping threatened or endangered species in
captivity is not a violation of the ESA. NMFS also deferred
enforcement activities to the Animal and Plant Health Inspection
Service, a division of the U.S. Department of Agriculture.
While the ESA prohibits listed species from being “harassed,”
Judge Ungaro said the term takes on a different meaning for animals
held in captivity, since the law is designed to conserve species in
the wild along with their ecosystems.
The judge took note of the complaints about Lolita’s living
conditions, including the small size of her tank, harassment by
white-sided dolphins that live with her and the lack of shade or
other protection from the weather. But those aren’t conditions to
be judged under the ESA, she said.
“Thus, while in a literal sense the conditions and injuries of
which plaintiffs complain are within the ambit of the ordinary
meaning of ‘harm’ and ‘harass,’ it cannot be said that they rise to
the level of grave harm that is required to constitute a ‘take’ by
a licensed exhibitor under the ESA,” she wrote.
Judge Ungaro also cited statements made by NMFS in response to
comments from people who want to see Lolita released into a sea pen
or possibly into open waters. Such a release, “could itself
constitute a ‘take’ under Section 9(a)(1) of the act,” she said,
“The NMFS noted concerns arising from disease transmission
between captive and wild stocks; the ability of released animals to
adequately forage for themselves; and behavioral patterns developed
in captivity impeding social integration and affecting the social
behavior of wild animals,” the judge wrote.
Jared Goodman, the plaintiffs’ attorney, said the judge
needlessly applied a separate definition of “harassment” to captive
versus wild animals. Conditions at the aquarium are clearly
harassment for Lolita, he said, and the Endangered Species Act
should provide the needed protection.
The Animal Welfare Act, which should require humane treatment
for captive animals, is long out of date and needs to be revised
based on current knowledge about marine mammals, he said.
The same plaintiffs filed a new lawsuit in May against the
Department of Agriculture for issuing a new operating license to
Miami Seaquarium without adequately considering the conditions in
which Lolita is being kept. Previously, a court ruled that the
Animal and Plant Health Inspection Service acted properly when it
renewed the license for Miami Seaquarium each year, because the law
does not require an inspection for an ongoing permit.
That is not the case with a new license, which was required when
the Miami Seaquarium came under new ownership as the result of a
stock merger in 2014, according to the lawsuit. Federal inspectors
should have reviewed the legal requirements to certify that
Lolita’s tank and other facilities met the standards before issuing
a new license, Jared said. According to documents he obtained
through public disclosure requests, it appears that the federal
agency simply “rubber-stamped” its previous approvals, he said,
adding that a formal review would show that the aquarium in
violation of animal welfare rules.
As the legal battles go on, it is difficult to see how Lolita is
any closer to being “retired” to a sea pen in Puget Sound where she
was born, although Howard Garrett of Orca Network and other
supporters have developed a plan for Lolita’s return and even have
a specific site picked out. See “Proposal
to Retire the Orca Lolita.” (PDF 3.5 mb).
Meanwhile, with SeaWorld’s announcement
that it will no longer breed killer whales or force orcas to
perform for an audience, a new group called The Whale Sanctuary
Project is looking for sites to relocate whales and dolphins that
might be released. The project has received a pledge of at least $1
million from Munchkin, Inc., a baby product company. For details,
check out the group’s website and a
press release announcing the effort. I should point out that
SeaWorld officials say they won’t release any animals.
June is Orca Awareness Month in the Salish Sea. And, as we’ve
seen in recent years, the Southern Resident killer whales are not
around to help kick off the month-long celebration.
J pod, one of the three Southern Resident pods, typically moves
in and out of Puget Sound through the winter and into spring, but
none of the whales have been seen in inland waters since May 18,
Orca Network. On May 24, the same groups were seen off the West
Coast of Vancouver Island.
Let’s hope they are finding plenty to eat, then come home to the
San Juan Islands in time for Orca Sing at Lime Kiln State Park on
June 25, when people will gather to serenade them. Meanwhile,
plenty of other events will be held during Orca Awareness
Another annual event, planned for this Saturday, is EcoFest,
which has been revamped this year as a more active festival, rather
than a lineup of information booths. Organizers are calling the
event in Kingston “a community science and nature festival.”
A nature walk followed by tips on bird watching, solar power,
medicinal plants and green construction techniques are part of the
festivities, along with music and food. For information, download
press release (PDF 77 kb) from Stillwaters Environmental Center
or visit the Stillwaters
The following day, this Sunday, is the kickoff celebration for
Orca Awareness Month, including a Baby Orca Birthday Bash at Alki
Beach Bathhouse, 2701 Alki Ave. SW in Seattle. Live music by Dana
Water Ways, Jan. 25), face painting, orca bingo and other
activities are planned.
For the remainder of the month, activities include an
informational webinar June 9, a discussion about the toxic threat
June 16, “Orcas in Our Midst” workshop June 18, a march for
endangered orcas June 24, “Orca Sing” June 25, “Oil, Orcas and
Oystercatchers” forum June 25, and “Orca and Salmon: An Evening of
Storytelling” June 29. These and several events yet to be scheduled
can be followed on the Orca
Month website or the Facebook page.
Orca Awareness Month was started 10 years ago by Orca Network
and has been adopted by Orca Salmon Alliance, made
up of organizations working to expand awareness of the relation
between killer whales and salmon, both considered at risk of
I hope you have time for one more blog post about killer whales
this week. I am reminded again that, while we strive to understand
animal behavior, we must not judge them in human terms.
I just returned home from the three-day Salish Sea
Ecosystem Conference in Vancouver, B.C., where orca researcher
Deborah Giles of the Center for Whale Research reported on some
seemingly odd behavior among our Southern Resident killer
The bottom line is that fish-eating orcas are occasionally
attacking and sometimes killing marine mammals, specifically harbor
porpoises and Dall’s porpoises. Apparently, they are not eating
It will take more study to learn why this is happening, and
Giles is eagerly seeking new observations. One possible reason is
that young killer whales are practicing their hunting skills on
young porpoises. Please read my story in the Encyclopedia
of Puget Sound.
I also wrote a story on the opening
remarks by keynote speaker Dr. Roberta Bondar, a Canadian
astronaut, neurologist and inspired observer of nature and human
team of reporters from Puget Sound Institute were assigned to
cover the Salish Sea conference, with the goal of writing at least
10 stories about research that was revealed during more than 450
presentations. I’m working on stories that will combine
observations from multiple researchers into common themes. These
stories will be released over the coming days and weeks. You may
wish to sign up for notifications via the Encyclopedia of Puget
A federal program that uses satellite transmitters to track
killer whale movements has been suspended after pieces of a metal
dart associated with a transmitter were found embedded in the fin
of an orca discovered dead two weeks ago in British Columbia.
The whale, L-95, a 20-year-old male named “Nigel,” was found
dead floating near Nootka Island along the west coast of Vancouver
Island. He was the same whale who was tracked for three days off
the Washington Coast by researchers with NOAA’s Northwest Fisheries
Science Center after they attached a satellite transmitter on Feb.
The attachment, which involves the use of a dart with sharp
metal prongs, was routine in every way and has not been directly
implicated in the death of the animal, according to a
statement from NOAA officials.
Still, finding pieces of metal still embedded in the dorsal fin
of the whale has already sparked a reaction from opponents of the
darting procedure, including Ken Balcomb of the Center for Whale
Research on San Juan Island. I expect further expressions of
sadness and anger from others over the coming days.
“In my opinion, the tag attachment methodology was overly
barbaric and defective from the get-go, and the entire tagging
program should be rethought and evaluated for efficacy,” Ken said
in a prepared
“The NOAA/NMFS tagging program is certainly injuring and
disfiguring these endangered icons of the Pacific Northwest, and it
is my subjective opinion that it is adversely altering their
behavior toward benign vessel interactions to approach them for
photo-identification,” he said.
Ken noted that the cause of L-95’s death has not been
determined, so the relationship to tagging could be coincidental,
but two transient killer whales also went missing after tags were
attached. Those deaths could be coincidental as well, he added, but
other tagged whales are still carrying around pieces of embedded
The 20-year-old male orca was found dead and in an advanced
state of decay on March 30 by researchers from Canada’s Department
of Fisheries and Oceans. A necropsy revealed “fair to moderate body
condition” and no clear sign of death. See the
DFO news release for a few other details.
Although there was no sign of infection where the satellite tag
pierced the dorsal fin, “veterinarians are investigating whether
the tag attachment penetration sites may have provided a pathway
for infection,” according to the NOAA statement. “Additional tests
are underway to determine presence of disease agents such as
viruses or bacteria that will provide further details as to the
cause of death.”
When the satellite transmitter was first attached, the
researchers “noted the outline of the ribs were slightly visible on
several members of L pod, including L95, but observed nothing
suggesting a change in health status.”
The satellite tracked L-95 for three days and then stopped.
Researchers assumed the transmitter had fallen off, but they were
not able to meet up with the whales before the research trip
Expressing extreme sadness, agency officials say they are
concerned that parts of the dart were found imbedded in the
“These tag attachments are designed to fully detach and leave
nothing behind,” says the NOAA statement. “Of 533 deployments, only
1 percent are known to have left part of the dart in the animal
upon detachment, although several of these have been in killer
“The team has halted tagging activities until a full
reassessment of the tag design and deployment is completed to
reduce risk of this happening again.”
Ken Balcomb recalled that he had complained about the tagging
program several years ago as officials were debating whether the
endangered Southern Resident population should become involved. Ken
says he was assured that previous problems had been fixed and that
he should simply document any problems he sees.
“Clearly with L95 still retaining tag hardware in his wound
site, the hardware attachment issues have not been fixed,” Ken says
in his latest statement. “I suggest evaluating the cost efficiency
and data already gathered from sighting reports, photo-ID, and
tagging to determine whether any additional studies of SRKW
distribution are justified.”
The tracking studies have been used the past few years to
document not just the areas where the killer whales travel but also
areas where they linger and forage for food.
NOAA’s explanation of the tagging program, its benefits and
potential changes to the “critical habitat” protections for the
killer whales are outlined in a
question-and-answer format, including specifics about the death
of Nigel, L-95.
Meanwhile, a young female orca, estimated to be two weeks old,
has been identified as a Southern Resident by DFO scientists. Cause
of death was not determined, but it was likely that the animal died
from birth complications, officials said. The calf was found March
23 near Sooke, B.C.
Analysis of blood and tissue samples are expected in three to
four weeks for both the calf and L-95, according to the
When a person becomes severely ill, the doctor will usually
check the person’s medical file before offering a diagnosis. In the
same way, researchers are now setting up medical records for each
of the 84 endangered killer whales that frequent Puget Sound.
Orca researchers and other wildlife experts spent the past two
days discussing how to create a medical database for all the
Southern Resident orcas, often described as the most studied marine
mammal population in the world.
Eventually, the information could be used to put an individual
orca under medical observation or even administer medications, such
as antibiotics — but that is likely to be a few years off.
“As a research community, we realize that we are at critical
mass and have enough data to start asking these questions to get
meaningful answers,” said Brad Hanson, research biologist with
NOAA’s Northwest Fisheries Science Center.
Lynne Barre, NOAA’s recovery coordinator for the Southern
Resident killer whales, said researchers in both Canada and the
U.S. have collected data on these animals, which travel into both
countries and down the West Coast.
“Some of these data sets are really large,” she said, “and it
takes technology to bring the data together. There are a lot of
players with different types of data.”
Fortunately, the research community is cooperative on both sides
of the border, Barre said.
Still, it will take formal cooperative agreements to share
available information that will eventually be used in research
reports, said Joe Gaydos, a veterinarian with SeaDoc Society, a
nonprofit research organization. The person who collects the
information should have the right to publish his or her findings,
he said, but it would be nice if researchers could post their
observations immediately for the benefit of the whales.
Over the coming year, general observations could be put into the
database, but eventually individual health records for the orcas
Fecal samples, including levels of various hormones;
Breath samples, including the types of bacteria harbored by
individual killer whales;
Observations of skin conditions;
Photos taken from boats and from the air to show body
conditions, including evidence of malnutrition or possible
Blubber samples for some whales, including DNA fingerprints and
other health conditions.
The number of Southern Resident killer whales was on the decline
in recent years until nine new babies were born over the past year
and a half. Individual killer whales can be identified by the shape
and size of their dorsal finds as well as the “saddle patch” behind
the dorsal fin. In addition, the family structures of the Southern
Residents are well known.
Last month, I wrote about how a group of researchers, including
Joe Gaydos, opened my eyes to how disease can be a powerful
ecological force. While researching stories about disease, I
learned about various ideas to monitor Puget Sound for disease
organisms. The idea of creating a health assessment for each killer
whale had been kicked around for awhile. Read about my newfound
understanding of disease in
Water Ways, and find my stories at the Encyclopedia
of Puget Sound.
Kirsten Gilardi, co-director of the Karen C. Drayer Wildlife
Health Center at the University of California-Davis, has worked
with mountain gorillas in Uganda and Rowanda, where the animals are
under close human observation and each has its own medical record.
Each gorilla can be identified by a wrinkle pattern on its nose,
besides physical size and other obvious characteristics.
The animals are checked to make sure they are eating, moving
normally and show no signs of coughing or sneezing, she said. “When
they do show signs of illness, the veterinary teams can go in.”
Sometimes antibiotics are delivered to the animal in the field.
If necessary, such as when a gorilla is injured in a snare, the
animal may be anesthetized and treated on the spot or even brought
to a hospital for care.
People also collect fecal samples left by the gorillas and
leaves from plants that they chewed to gain information about
hormones and various bacteria and viruses they may carry.
When the Gorilla Doctors program was started in the 1980s, it
was the first time that veterinarians went in to treat the animals
in their habitat, Gilardi said. Since then, the population has
grown nearly four-fold, and they are the only great apes whose
numbers are increasing in the wild.
Information collected for individual killer whales would not be
so different than what has been collected for gorillas, she
Cynthia Smith, a veterinarian at the National Marine Mammal
Foundation, has assessed wild dolphins affected by the Deepwater
Horizon oil spill in the Gulf of Mexico. In that case, individual
health assessments were used to complete an assessment of the
overall population. From there, management decisions were made to
protect the overall health of the population.
The same kinds of results could come from pulling together
information on the killer whales, she said.
“By setting up a database and using it, you can have a finger on
the pulse of the health of these animals,” Smith said. “Then you
can develop strategies to manage the problems.”
The health-assessment project is supported by a grant from the
National Fish and Wildlife Foundation, funding from NOAA Fisheries
and private support from SeaDoc Society donors.