Salmon Hypothesis

The salmon levels are as predicted, low and unstable. Bill McEwen foresaw this, evidently in, “The salmon will be hatchery-raised,

The life cycle of the Atlantic salmon begins in late October when rivers are just cool enough to begin production of the new salmon. The female starts by digging a small nest called a redd in the bottom gravel area of a stream. Redd’s are dug out of the gravel in a way that allows a clean flow and plenty of oxygen to be received by the growing fish. The male salmon then projects their milt (sperm) onto the redd to fertilize the egg. With swift

Juvenile Pacific Salmon and other migratory marine animals are travel many long distance under water to use resources in different oceanic regions. The main question is how these marine animals travel many long distance and able to locate Specific Ocean feeding areas without previous experience. Researchers experimentally demonstrate that the juvenile chinook salmon respond to magnetic field which lead them toward their marine feeding grounds. The “magnetic map” of Juvenile salmon to be inherited. These results, Similar with findings in the sea turtles indicate that the magnetic maps are genetically wide spread and show their navigational abilities evident in many long distance under water

To truly understand the cause of this awful fish mortality crisis in the HAGS Company, it is essential that we gather all the information we can about the normal living conditions of both the Halibut and Grunion fish. Halibut or Hippoglossus, is a flatfish from the family of the right-eye flounder fish, the largest of all the flatfish, and can grow to more than 8 ft long and 700 lbs. They usually reside in the North Pacific and the North Atlantic oceans, and are a readily enjoyed food all around the world. Physically, they are dark brown on the top side with a cream underbelly and have very small scales embedded within their skin.This color scheme is a form of countershading and disguises Halibut from above and from below by blending into the light above and the ocean floor below simultaneously. Halibut live at depths from nearly 10-100 meters, yet spend most of their time near the bottom, they can often move up the water column to feed.Younger Halibut, up to 10 years of age, are highly migratory, and generally migrate in a clockwise direction. Relatively inactive yet strong swimmers, able to eat a large variety of fish such as cod, crab, and shrimp. Adult Atlantic

Anadromous salmonids, which travel between freshwater and saltwater, is an example of how habitat loss can change evolutionary patterns. Dams constructed for hydroelectric power generation are blocking the access for these fishes, but culverts and river engineering have also reduced the amount of habitat that anadromous fishes can use (Furniss et al. 1991; NRC 1996). These results suggest that loss of habitat will alter evolutionary patterns in salmonid populations.

Over the past 25 years, Atlantic salmon has become one of the endangered species among the red list. The problem first occurred at Penobscot river. Initially, 75% of the whole country’s Atlantic salmon population lived there, but now, less than 5% remain. The main reason that leads to the rapid decline of Atlantic salmon to the state of extinction is due to overfishing which begins from 1950. As the decline in salmon population became evident, farming of salmon began in 1980 and fishing stopped in 1990. Furthermore, National Oceanic and Atmospheric Administration (NOAA) decided to step in and rectify this problem when they realized the seriousness of this issue. They spent 7.3 million into American Recovery and reinvestment Act (ARRA) to rebuild

Herring and Salmon populations are low overall. The Prince Reupert Herirng stock is moderate in abundance, while the Haida Gwaii stock has shown little improvement for the past ten years, The Central Coast Herring stock numbers are at a record low in abundance. Sockeye Salmon population has been consistently declining since the 1990’s due to the dangerous nature of their route of migration of this species through to the Gulf of Alaska. Groundfish stock tends to vary from year to year. The decline in dissolved oxygen in these areas has shown to affect distribution. Groundfish stocks are improving overall, but those of shorter life spans (ie. flat fish) show much greater improvement then those with longer life spans (ie. rockfish).

The life cycle of the Atlantic salmon begins in late October when rivers are just cool enough to begin production of the new salmon. The female starts by digging a small nest called a redd in the bottom gravel area of a stream. Reddd’s are built in a way that allows a clean flow and plenty of oxygen to be received by the growing fish. The male salmon then projects their milt (sperm) onto the redd to fertilize the egg. With swift movements made by the tail gravel is projected

The methodological approach during this experiment was started by going to different parts of the Tidal Creek every season throughout the year for testing. Every trip to the Tidal Creek would require a collection of the designated species that were being experimented on. The species collected would then be identified and separated. After this was done, they would be measured

This lab has taught the scientific methods that can be used to gather and test the data to complete a required experiment.Through the scientific methods I was able to develop a hypothesis and test it by collecting the data. As our hypothesis stated that Blue fish is most dominant in our lake because of less predatory threats.But after collecting the samples of fish from the lake We were not able to prove our hypothesis.As according to the data we collected the blue fish was less dominant as compared to green fish.So we compared our data to average class data but still we were not able to prove our hypothesis as green fish was most dominated in the lake because green fish had less predatory threats compared to blue fish .Thats why blue fish

An outcome of this would be that because next year will probably be hotter or at least as hot, Sockeye Salmon will soon be

He has a memeorable discussion with the cab driver Horowitz who brings in the idea of the fish freezing in the lake and taking food in through thier skin. The fish represent the "normal" people in society--they are happy and belong in the lake. Society takes care of them. Holden believes he does not belong, and when winter comes society will "freeze" and force him away.

Initially, the salmon eggs hatch into small fishes called fry, which are three to eight centimeters long. Then they swim down to the lower river where the water is fast flowing, and then, after about four years, those fry will change their appearances to what are called smolts, which have 12-15cm bodies. Afterwards, they will spend the third phase in the open sea, in which they will stay for approximately five years and grow up to 70-76 cm. However, they do not leave the sea until they are mature enough and become into adult salmons.

Salmon artificial selection would be beneficial because we will get bigger Salmon.Their explanation is logical because if we get bigger Salmon we can feed more people,but at the same time if something goes wrong then we can make too big salmon and we wouldn’t know how to reverse it and who knows what will happen.So i am in the middle for this Explanation.

The authors are exploring kin selection theories in Atlantic salmon (territorial fish). Theoretically, kin selection should be favourable in these fish, however, not much evidence has been shown in wild populations to support this theory. The reasoning for this is due to the method of calculating kin interaction in wild Atlantic salmon. Recent research showcases that the previous belief of distribution of the salmon: being fixed and static, is not as simple as it seems and that they have a more dynamic and overlapping environment. The authors are hypothesizing 1) the likelihood of dominant fish sharing food with kin vs non-kin and 2) if kin intimidation which is passed down from dominant to minor fish is present after the removal of dominant