First shad to be had?

[Mark Kranhold]

last year the lampreys on that cam were CRAZY!...Probably won't enter this year...two years in a row must show that I have no life...

Already been seeing Lampreys wading the American this spring

[Scott V]

Already been seeing Lampreys wading the American this spring

I didn't know that lampreys come and go, I thought they were always here. But then I know very little to nothing about them.

[Mark Kranhold]

Scott , lampreys migrate just like our anadromous runs. Here is some info on them.

Pacific lamprey is a parasitic eel-like species that has no true jaw, bones or fins. They are anadromous, meaning they are born in fresh water streams then migrate to the sea or ocean and return to freshwater streams to spawn. Like salmon, Pacific lamprey do not feed during the spawning migration. Instead they live off lipid or fat tissue reserves in their body.

While spawning, females lay eggs in redds created by using body movements to dig into the sand and gravel. After spawning, the blind larva, called ammocoetes, move downstream to find fine silt deposits where they bury themselves in a U-shaped form. Larva filter feed from its mouth at the surface of one end. Larvae feed upon algae, diatoms and detritus. Their bodies process 30-40% of food taken in, the remaining particulate matter is flushed downstream or taken up by other filter feeding organisms. The larvae are also predated upon by coho fry while changing locations or by being dug out of the sand or silt. The larva remains in the burrows for four to six years, changing locations to deeper water and courser sand as they mature. Upon reaching the eyed-lamprey or eyed-juvenile stage, the lamprey migrates to the ocean usually during November through June.

Pacific lamprey live in the ocean for six to forty months in waters up to 70 meters deep. During this period the pacific lamprey begin its parasitic state, feeding upon blood and bodily fluids of fish and whales. In turn, marine mammals and large fish predate upon Pacific lamprey. When they return to streams to spawn, they have not reached sexual maturity. During this time pacific lamprey become sexually mature and do not feed. After reaching sexual maturity spawning takes place.

Lamprey are important as a food source for numerous animals. High in fat content, concentrations of adult and larval lamprey once made them an important and dependable food source for birds, fish and mammals, especially seals and sea lions. Adult pacific lampreys also function as a buffer to reduce predation on adult migrating salmon from seals and sea lions. Similarly, Pacific lamprey is found in the diets of other fish and gulls, that otherwise might prey more heavily on young salmon. Similar to salmon, lamprey transport important nutrients such as nitrogen to freshwater ecosystems.

Pacific lamprey have the widest distribution of all lamprey. They are found in the Pacific Rim from Japan to Korea to California and inland in the Columbia Basin to sections of the Snake River Basin. Within the United States their populations have drastically declined in the last forty years. At Winchester Dam in the North Umpqua River, the pacific lamprey run count dropped from 46,785 in 1966 to less than 50 annually since 1995. At Gold Ray Dam on the Rogue River the population counts have varied from 155 to 2,370 since 1993. These numbers are considered to be much lower than historical Pacific lamprey runs.

Population declines are attributed to flow regulation, channelization, poor water quality, and chemical treatments. Dams lower Pacific lamprey runs because of blocked passages. Dams also lower water levels in rivers and streams, which dewater necessary sand and silt habitat used by ammocoetes. Irrigation ditches along rivers and streams allow ammocoetes to move through screens into the irrigation canals, but do not allow them to return to the stream. The ammocoetes die in the irrigation ditches for lack of proper maturing habitat and food sources. Also, introduction of exotic predators, such as small mouth bass, can be attributed to population declines.

Before its decline the lamprey was a very important fish for many of the Tribal people of the Pacific coast and interior Columbia River basin. Tribal people harvested these fish for subsistence, ceremonial, and medicinal purposes. Tribal members of the Columbia River Basin have attributed three main negative impacts on their culture from the reduced lamprey runs. These negative impacts are as follows: 1) loss of culture; 2) reduction or loss of fishing in traditional areas; and 3) members must travel to lower Columbia River tributaries to find lamprey. The accumulative effects of the loss of lamprey within the culture are that the young do not know how to catch and prepare lamprey for drying and the loss of lamprey myths and legends.

In January 2002, KS Wild and ten other organizations petitioned for the listing of four lamprey species as “Endangered” throughout their range by the United States Fish and Wildlife Services under the Endangered Species Act. The petitioned lamprey species are Pacific lamprey, river lamprey, Kern brook lamprey and Western brook lamprey, a non-parasitic lamprey. Western brook lamprey’s distribution stretches from the Sacramento River Basin to British Columbia in small tributaries. Kern brook lamprey is endemic to a small portion of the San Joaquin River Basin in California. River lamprey distribution range extends from the Sacramento River to southeast Alaska, and inland to the Columbia Gorge on the Columbia River.

In March 2004, KS Wild and other petitioning groups sent U.S. Fish and Wildlife Service a 60-day notice of possible legal action. In response to the 2002 lamprey petition, the Fish and Wildlife Service twice claimed they did not have enough funds to do the required status review. A status review is the first administrative step in determining the need to list a species. The Western Environmental Law Center is representing the lamprey coalition.

- See more at: http://kswild.org/what-we-do-2/biodi....BQVXxavb.dpuf

[Scott V]

That was a cool read Mark, thanks. Looks like we need to show them a lot more respect than I have seen in the past. They are an important element to the possible longevity of salmon.

[Larry S]

They have been a real and persistent problem in the Great lakes since the 1940's.
http://www.glfc.org/sealamp/

Best,
Larry S

[Mark Kranhold]

Pretty informative video Larry, thanks for sharing! I had no idea the Great Lakes had a period of time that they were infested with lampreys. Pretty amazing the precentage of fish they wreaked havoc on, glad they got ahold of that problem! Amazing the R&D they put into figuring out a solution... Got to love science! I remember the late 70's and early 80's the American river was loaded with them but since then they've been on the decline. Thanks again, Mark

[Larry S]

Mark,
I think they are still a formidable problem in the Great Lakes. When my family moved to Petoskey, Mi in
1950, there were 3 fish markets. Within three 3 years, they had all closed down.. They use electric weirs and
stream poisons to control them; but, it's a standoff, at best. Now, they also got the Asian carp to worry about.
Best to you, Mark.
Larry S

[Jeff C.]

There are reports that shad are being caught at Clarksburg and Freeport. Probably not huge numbers but sounds like there are starting to trickle in!

[Randy Lee]

Jeff C,
The word on the street is that you start fishing for shad at Semple Point under the Carquines bridge, then moving upstream to the bottom of First street in Benecia. Once you know they are on their way you draw back, casually waiting on the American River ready to strike at any given moment! Is this true? That explains everything, say no more.
Randy

[Jeff C.]

Nice one Randy! Hope to catch my first of the season on the A. in a few weeks. They have to show up in big numbers at Freeport, Discovery and Verona first.