The SeaDoc Society is a program of the Wildlife Health Center at the UC Davis School of Veterinary Medicine.
Share 

Fishes


Eulachon

The eulachon (Thaleichthys pacificus) is an important food source for many marine fish, birds and mammals throughout the Salish Sea. Historically it has been an important food source for many Native American tribes.

In March of 2010 the NOAA announced it will list the eulachon as Threatened under the US Endangered Species Act. This fish is also called the candlefish because it is packed with so many calories you can light a dried one like a candle.

For more information about the listing, download this pdf from NOAA, this question and answer pdf on the decision to list as Threatened, or visit the Eulachon page at the northwest office of NOAA Fisheries.

For another take, visit http://qmackie.wordpress.com/2010/03/31/vanishing-eulachon/

Read about other species of concern in the Salish Sea.

We'd hoped to find a video of someone lighting a eulachon on fire, but couldn't...

(Photo shows an Alaskan eulachon. Photo by David Beatley, US Forest Service.)

New Comments on Rockfish Conservation

Independent of the recent Federal listing of 3 rockfish species, Washington State is working on their rockfish recovery plan. Today SeaDoc submitted comments on the revised draft Environmental Impact Statement.

While most of the recovery plan is good, the State is still proposing that hatchery production and the use of artificial habitat be used as part of the recovery strategy. SeaDoc feels that hatcheries and artifical habitat are not good ideas.

PDFs:

Read our comments

Read the WDFW draft rockfish EIS

Comments must be received by 5pm on May 21, 2010. Visit the Washington Dept of Fish and Wildlife for more information.

Rockfish Listed by NOAA Fisheries

Yelloweye rockfish by Janna NicholsToday NOAA Fisheries listed Bocaccio as endangered and Canary and Yelloweye Rockfish as threatened. These are 3 of about 26 long-lived rockfish species that inhabit the Salish Sea region. Hopefully listing will eventually results in recovery plans that restore the populations of these three fish. To find out more about 64 threatened and endangered species in the Salish Sea, check out SeaDoc's biennial review:
http://www.seadocsociety.org/files/pdfs/GB-PS_Species_of_Concern_2008%20Manuscript.pdf

Also see:

http://seattletimes.nwsource.com/html/localnews/2011714303_rockfish28m.html

Marine species mortality in derelict fishing nets in Puget Sound, WA and the cost/benefits of derelict net removal

Gilardi, K.V.K., D. Carlson-Bremer, J.A. June, K. Antonelis, G. Broadhurst, T. Cowan. 2009. Marine species mortality in derelict fishing nets in Puget Sound, WA and the cost/benefits of derelict net removal. Marine Pollution Bulletin 60 (2010) 376–382. Full text available at www.elsevier.com/locate/marpolbul

Eulachon listed as Threatened species

In the March 17, 2010 Federal Register, NOAA lists the Eulachon (Thaleichthys pacificus) as Threatened under the US Endangered Species Act. This fish, also called the candle fish because it is packed with so many calories you can light a dried one like a candle, is an important food source for many marine fish, birds and mammals. Historically it has been an important food source for many Native American tribes.

Interestingly, we don't have good data on Eulachon numbers in the Salish Sea. Unlike with herring, Washington State does not conduct quantitative stock assessments for eulachon, but it is believed that eulachon stocks have declined in the Columbia (WOEMP, 2001) and Elwha Rivers (Shaffer et al., 2007). In British Columbia, the Frasier River eulachon spawning stock biomass has collapsed and is at a precariously low level (DFO, 2007).

The listing of this species will hopefully ensure that more work is done to understand the natural history of this species in the Salish Sea so that we can ultimately restore the population.

Find out more about the listing of the eulachon at:

http://www.nwr.noaa.gov/Other-Marine-Species/Eulachon.cfm

SeaDoc is the only organization that tracks threatened or endangered species in the Salish Sea on an ecosystem-wide scale. Since 2002, we have been tracking "species of concern" as listed by Washington, British Columbia, the US Federal Government and the Canadian Federal Government.

Eulachon are listed as threatened (BLUE list) by BC, are candidates for listing in WA state, are Candidates under the Canadian COSEWIC with a status report expected this year, and were Candidates for listing under the US Federal ESA until now.

Download our PDF listing the species of concern and describing the listing processes (we publish this report every 2 years):

Gaydos and Brown, 2009
http://www.seadocsociety.org/files/pdfs/GB-PS_Species_of_Concern_2008%20...

What's the Deal with Rockfish and Seals?

Harbor seal populations have exploded nearly tenfold in the Salish Sea since the 1970s, while at the same time many rockfish species have plummeted. Some fishermen blame that on the increase in hungry seals. But coincidence is not science. So who ya gonna call?
 
SeaDoc-funded scientists rolled up their sleeves and collected almost 1,000 samples of seal scat in the San Juan Islands. Detailed analysis of these samples revealed that herring make up nearly 60% of these harbor seals' diets, with their next favorite meals being salmon, pollock and cod-like fish. The seal's total menu, though, was surprisingly diverse, with seals chowing down on at least 35 species of fish! Still, through the entire first year of the study, less than 3% of samples contained rockfish bones. Case closed? Not so fast...
 
In the second year, 12% of the samples contained rockfish remains, particularly in the winter when there are fewer salmon locally. With all the seals in the Salish Sea, those numbers could impact rockfish recovery. That doesn't mean, however, that we should start controlling seal populations: this study showed seals also have a taste for dogfish, another major fish predator. So fewer seals could mean more dogfish. The real answer is to remember that all parts of our ecosystem are tightly intertwined. Rockfish recovery depends upon ecosystem recovery, including salmon recovery, herring recovery and so on around the Sea.

More information on this topic:

(You can do these last two searches yourself by choosing "browse by species" or "browse by issue" from the Salish Sea menu at left.)

Rockfish Recovery Plan: Your Opportunity to Comment

Vermillion Rockfish by J. Nichols

  Vermillion Rockfish by J. Nichols

[Comments are now closed on this plan. We will update the site with information on the final plan when it's available.]

Rockfish populations are in trouble, and the Washington State Department of Fish and Wildlife is writing the first Puget Sound Rockfish Conservation Plan.

This is a major step in protecting rockfish. Like the killer whale and salmon recovery plans, it creates a coordinated plan for recovery.

The plan is currently a draft, and comments are being accepted until January 4, 2010.

Herring Spawn: nutritious fast food in danger?

A recent SeaDoc-funded project has revealed how important herring spawn can be for species like migratory waterfowl. Eric Anderson, Jim Lovvorn and others studying the role of herring spawn in the diet of surf and white-winged scoters found that these birds aggregate to feed on herring spawn whenever it is available.

Using predator distributions, diet, and condition to evaluate seasonal foraging sites: sea ducks and herring spawn

Anderson, E. M., J. R. Lovvorn, D. Esler, W. S. Boyd and K. C. Stick. 2009. Using predator distributions, diet, and condition to evaluate seasonal foraging sites: sea ducks and herring spawn. Marine Ecology Progress Series 386: 287-302. Download PDF.



Sign up for our newsletter to get monthly updates on our activities and accomplishments.
  Required information:
* Email
  Optional information:

If you include your name and address we'll send you two free SeaDoc stickers so you can show people you care about healthy oceans. Plus you'll get hard copy versions of our Wildlife Posts six times a year.

First Name
Last Name
Address
City
State
Zip
Please send me reminders of SeaDoc events
I'm a SCUBA diver
 

Why our work matters

Healthy ecosystems support economic prosperity. The Salish Sea provides abundant natural capital that contributes substantially to the financial prosperity of the region. Unhealthy ecosystems cost money because we lose the opportunity to benefit from them. The Salish Sea's deteriorating health threatens our economic well being and quality of life. SeaDoc uses science to find solutions to the problems facing the fish, wildlife and people of the Salish Sea.

How you can help:

Make a donation: Most of SeaDoc's work is supported by private donations from people like you who care about the health of our coastal ecosystems. Your donation makes it possible for us to keep doing the science that will give us objective information about designing a healthy ecosystem that benefits both people and wildlife. Click here to learn more about donating to SeaDoc.


Adminstrator login | Sign up for our Email Newsletter | Make a Donation