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DID YOU KNOW?The coho salmon was introduced from Pacific waters into the Great Lakes and is now abundant there.
SCIENTIFIC NAME:Oncorhynchus kisutch, from the Greek roots onkos (hook), rynchos (nose) and kisutch, the common name in Siberia and Alaska.
COMMON NAMES:Silver salmon, hook nose salmon, blueback salmon, jack salmon, salmon trout, siverside salmon and white salmon.
DESCRIPTION:The coho salmon is bluish-black with silver sides in saltwater; black spots on the back and upper part of the caudal fin. Smaller and slimmer than the Chinook salmon; the inside of the mouth is gray or black with white gums. Coho salmon reach up to 38.5 inches in length and weigh up to 31 pounds; although they usually weigh between 6 to 12 pounds.
LIFE CYCLE:Spawning occurs from November to January, with the eggs hatching the following spring. Coho fry remain in streams for over a year. Moving seaward the following spring, most cohos return to spawn when they are three years old. The mature male fish which return after two years are known as "jacks" and in Oregon and Washington, the abundance of "jacks" are used to predict the next year's three year old return.
HABITAT AND ECOLOGY:Coho salmon utilize freshwater, nearshore and offshore environments during its lifecycles. Coho salmon spawn in the same environment as Chinook salmon; however, coho prefer lower stream velocity, shallower water and smaller gravel. Most coho fry stay in the stream for over a year feeding on aquatic insects, zooplankton and small fish. Adequate stream cover is important to fry survival, as is high dissolved oxygen levels.Mortality is especially high during freshwater lifestages, often a result of poor forest and agricultural management practices that lead to siltation, which may ruin spawning beds or smother the eggs. Migrating coho salmon also face physical obstacles and high water temperatures resulting from dams, inadequate water flows due to diversions for irrigation and impoundment of water for power generation. Once reaching the estuaries, coho salmon fall prey to a number of other species and may be impacted by human changes, such as shoreline development, residential drainage and the filling of marine wetlands. The time spent in this habitat is critical to the development of the species and their ability to survive in the offshore environment.
RANGE:Coho salmon spawn in coastal streams from Northern Japan to the Anadyr River in Siberia and from Monterey Bay in California and Point Hope in Alaska. This species can also be found in the ocean from Baja, California, to the Bering Sea in Alaska. Major U.S. spawning grounds are in Alaska, Washington and Oregon.
ECONOMIC VALUE:The fourth most abundant salmon species, coho salmon is a culturally and economically important resource, and an important subsistence fish. Coho salmon is commercially fished from Northern California north to Norton Sound in Alaska; 75% of the total U.S. catch comes from Alaska.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoA tubeworm comes from the Phylum Annelida Class Polychaeta Order Sabellida which consist of all the featherdusters.
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Is a Tubeworm a fish?
No, a tube worm is an invertebrate, whereas a true fish is a vertebrate.
Are tubifex worms harmful?
They make food from chemicals - a process called chemosynthesis. Their survival depends on a symbiotic relationship with the billions of bacteria that live inside of them. These bacteria convert the chemicals that shoot out of the hydrothermal vents into food for the worm. Since a tubeworm has no mouth, how do bacteria enter the worm? Scientists have found that, during its earliest stages, the tubeworm does have a mouth and gut for bacteria to enter. But as the worm grows, these features disappear!
What are the characteristics of a tubeworm?
This is from www.saltcorner.com: Tube worms are a variety of marine worms that live in tubes. Most of them belong to one of two large groups, which are called sabellids and serpulids, and some specimens from each of these groups can be found regularly in aquarium shops. However, as neat looking and interesting as they are, they are definitely not for everyone. The sabellid worms form a tube made of a tough but flexible material, which is sometimes coated with a layer of detritus, mud, sand, and/or small shell fragments, while the serpulids build rock-hard tubes made of calcium carbonate. Many of the "hard-tube" serpulids also produce a small plug or door-like structure, called an operculum, that they can use to seal themselves inside their tube, while the "soft-tube" sabellids do not. There are a few exceptions, but these are the general characteristics. All of these worms also have specialized structures called crowns, which are extended from the tubes to collect food particles and for gas exchange. They act like a sieve and a gill at the same time. The typically circular-shaped crowns are made up of many branches called radioles, and the radioles themselves are covered by tiny hair-like branches. Thus, many look like some sort of small fan or feather duster.
What animal live the longest?
Polyp or HydraThe Hydrozoan species Turritopsis nutricula is capable of cycling from a mature adult stage to an immature polyp stage, and back again, indefinitely. This means there is, theoretically, no limit to its life span, although no single specimen has been observed for any extended period and it is impossible to estimate the age of a specimen.Antarctic SpongeThe Antarctic sponge Cinachyra antarctica has an extremely slow growth rate in the low temperatures of the Antarctic Ocean. One specimen has been estimated to be 1,550 years old.Mollusk or ClamA specimen of the Icelandic Cyprine Arctica islandica(also known as an ocean quahog), a mollusk, was found to have lived 405 years and possibly up to 410. Another specimen had a recorded lifespan of 374 years.Koi FishA koi fish (Cyprinus carpio) named Hanako lived to the age of 226, from 1751 to 1977.TortoisesThe longest-lived higher animals include several species of tortoise (family Testudinidae), known to live 150 years or more. One owned by the Tongan royal family lived 188 years.See the related link for more information about the animals with the longest life spans.
Is a tubeworm part of the phylum mollusca?
No, it is part of the phylum annelida.
What are the predators of the archerfish?
Phillp McCan and phedo bear
Is a Tubeworm a fish?
No, a tube worm is an invertebrate, whereas a true fish is a vertebrate.
Is a tubeworm a high order cosumer secondary consumer or a primary consumer?
It can be considered a secondary consumer.
What is the scientific name for the Lepidoptera known as the Grass tubeworm?
The accepted scientific name is Acrolophus sp.
What is the scientific name for the Lepidoptera known as the Clemens' grass tubeworm?
The accepted scientific name is Acrolophus popeanella.
What is the scientific name for the Lepidoptera known as the Eastern grass tubeworm?
The accepted scientific name is Acrolophus plumifrontella.
What is the scientific name for the Lepidoptera known as the Texas grass tubeworm?
The accepted scientific name is Acrolophus texanella.
What is the scientific name for the Lepidoptera known as the Walsingham's grass tubeworm?
The accepted scientific name is Acrolophus propinquus.
What environment would you find a giant tubeworm in?
You find giant tube worms living in communities near hydrothermal vents on the Pacific Ocean floor.
What zone does the calcareous worm live in?
The calcareous tubeworm is a marine worm. It is commonly found in the intertidal zone, but may live at depths up to 100 meters.
What might a scientists do to find out how giant tubeworms interact with their environment?
By Scuba diving down into the sea and try to find a giant tubeworm and record what it is doing or put it in a container full of water and take it back to their lab and record their results. This is a question I had on my science homework.
