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DockRat
11-29-2013, 09:20 PM
Anybody seen any dead ones. Most have been turning into GOO :Shocked:
This is odd ? Sardine numbers down too.
FNN theories, Fukushima ?
DR


http://www.youtube.com/watch?v=jGfYLdOQQ0c

Scientists Stumped By West Coast Sardine, Starfish Die-Off
November 4, 2013 3:02 PM

SAN PEDRO (CBSLA.com) — What is causing some marine life along the West Coast to disintegrate and die-off?

KNX1070′s Brian Ping reports a mysterious disease is decimating a breed of starfish even as federal officials are slashing projected West Coast sardine harvests.


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Scientists Stumped By West Coast Sardine, Starfish Die-Off Brian Ping
Scientists say an outbreak of “sea star wasting disease,” an affliction that causes starfish to develop white lesions, lose arms, and eventually disintegrate, is spreading at a rapid rate from Southern California all the way up to Alaska.

The disease has killed off some 95 percent of orange and purple starfish that are commonly found in West Coast tide pool populations, according to the Associated Press.

The starfish dine on mussels, so scientists also worry that a collapse in the population will allow mussels to multiply unchecked, crowding out other species.

Mike Schaadt, Director of the Cabrillo Marine Aquarium in San Pedro, said while the mystery disease appears to be a pathogen that is exacerbated in warm water through the summer and fall seasons, it is unlikely to pose a long-term ecological threat.

“There is no indication that it has any connection to anything other than a natural occurrence; it is following a pattern that we’ve seen before,” Schaadt said. “So there’s no indication that this has some other connection.”


About five years ago, a similar outbreak decimated about 90 percent of the starfish breed, only to see population numbers bounce back to normal, Schaadt added.

But it isn’t just starfish that are stumping scientists.

Federal fisheries managers have cut projections for West Coast sardine harvests by two-thirds while scientists try to get a better handle on indications the population is entering a significant down cycle.

The Pacific Fishery Management Council voted 7-6 Sunday in Costa Mesa to set the overall harvest level for California, Oregon and Washington at about 7,000 metric tons for the first six months of 2014.

The issue will be taken up again after a new and more complete population assessment is issued in April.

Council member Marci Yaremko of the California Department of Fish and Wildlife says the council decided to take an even more precautionary approach than management guidelines call for because of evidence that few young sardines are joining the population.

fly addict
12-01-2013, 02:34 PM
Don’t worry, once the environmentalists hear of this they will blame it on Bush!
:LOL:

Ifishtoolittle
12-01-2013, 03:11 PM
lol I not sure how much of this study is reputable. At San Pedro I saw loads of starfish on nearly every piling that I fished along. Oh and the mussel population should be in check since I use so many of them for bait.

DockRat
12-02-2013, 06:54 PM
Thanks for the report. It appears that it mostly Sunflower Starfish north of Oregon. I have seen them diving back in the 70's/80s locally. Never saw on in a piling or shore rocks. The ones I recall seeing were about 16" this below Wiki info saws 3', that is pretty huge.
DR

Pycnopodia helianthoides, commonly known as the sunflower seastar, is a large sea star found in the northeast Pacific. It is the largest sea star in the world, with a maximum armspan of 1 m (3.3 ft). Sunflower seastars usually have 16 to 24 limbs; their color can vary widely. They are predatory, feeding mostly on sea urchins, clams, snails, and other small invertebrates.

smokehound
12-06-2013, 05:30 PM
Dont worry. As long as fountain valley and westminster exist, you shouldnt have to worry about the mussel epidemic. :LOL:

Ifishtoolittle
12-12-2013, 11:34 PM
Thanks for the report. It appears that it mostly Sunflower Starfish north of Oregon. I have seen them diving back in the 70's/80s locally. Never saw on in a piling or shore rocks. The ones I recall seeing were about 16" this below Wiki info saws 3', that is pretty huge.
DR

Pycnopodia helianthoides, commonly known as the sunflower seastar, is a large sea star found in the northeast Pacific. It is the largest sea star in the world, with a maximum armspan of 1 m (3.3 ft). Sunflower seastars usually have 16 to 24 limbs; their color can vary widely. They are predatory, feeding mostly on sea urchins, clams, snails, and other small invertebrates.

Not my Uni and other shellfish! So, is it a good or bad thing that those sea stars are dying off? They only appear to be predators of tasty shellfish without many predators of their own.

smokehound
12-16-2013, 11:28 PM
Orchitophrya stellarum is the cause of the decline. It's actually quite common, especially when sunstar populations reach large densities; it's everywhere in the water, including our coastal areas.

This protozoan spreads swiftly because of how sea stars spawn: by releasing sperm and eggs into the water.

Stormcrow
12-17-2013, 10:46 AM
This type of thing is usually a natures simple way of keeping populations in check. Stuff like this has been happening for millions of years.

bachiboy
12-17-2013, 11:14 PM
Ran into some people the other day taking photos and doing a study on exactly this problem. They said that there was also a problem with the mussel population declining. The one guy I talked to briefly mentioned that it might be a bacterial cause. Didn't go into it much further than that.

DockRat
12-19-2013, 08:51 AM
Ran into some people the other day taking photos and doing a study on exactly this problem. They said that there was also a problem with the mussel population declining. The one guy I talked to briefly mentioned that it might be a bacterial cause. Didn't go into it much further than that.
Seems as though mussels have disappeared in some areas. I spoke with a fisherman at the Queen Mary public fishing area where mussel are no longer seen. He said that stretch of rocks always had mussels years ago and the fishing was better. Could be related to the LA River dumping urban runoff pollution at the Queen Mary ?

In Southern California, studies indicate that mussel populations are declining. Pollution, climate change and algae blooms may be contributing to this drop, but human impacts including trampling, disturbance and collection for food or bait have also resulted in widespread destruction. For this reason, Laguna Ocean Foundation’s tidewater docents and educators spend much of their time in the tidepools protecting the mussel beds. Laguna Beach is either a state marine reserve or a no-take state marine conservation area, and thus there is absolutely no collecting of mussels for any reason.

Read more at;
http://www.lagunabeachindy.com/2013/04/11/shore-scene-shrinkage-in-natures-sieve/