ipl-logo

Grey Seal Research Paper

554 Words3 Pages

On May 3rd, Dr. Morten Tange Olsen presented to us on the seal virus epidemic that took place in 2002 and was one of the biggest virus epidemics to ever take place in the world. The virus was found in two types of seals. The first type of seal that it was found in is the harbour seal, which is found in the Northern hemisphere. The second type of seal that the virus was found in is the grey seal, which at one point was very common in Denmark but was almost driven to extinction 150 years ago due to hunting. However, the grey seal has slowly began to repopulate on Danish shores and is making a comeback. The virus that is the cause of the seal epidemic is known as the phocine distemper virus (PDV) and has appeared at least twice. This type of virus has a history of leading to masses of seals dying. In the 1950s, tens of thousands of seals died as a result of the virus. In 1988, the virus was the cause of death for over 23,000 harbour seals and 30,000 deaths in 2002. In addition to seals, this virus can also be a …show more content…

Olsen shared with us that the virus was thought to be brought to the arctic by polar explorers who brought their dogs with them on their expeditions. However, it is not clear how the virus was able to transfer from the dogs to seals. In the 1980s and 2000s, the virus began to spread to Europe when it first showed up in Anholt, Denmark and then spread to other local waters. Eventually, the virus spread to every major cluster of harbour seals in Europe. Since seals do not move around much, it is thought the virus was spread through another specie that moved it around from cluster to cluster in different areas of Europe. Another possible explanation for the rapid spread of the virus across regions is through the grey seal, which is more known for long distance movements. One of the most interesting facts that Dr. Olsen shared is that the harbour seals on the Norwegian coast and the Baltics seemed to avoid the epidemics due to possible genetic

Show More
Related
582 Words | 3 Pages

However, in Kessler’s article, it is reported that female elephant seals living at Marion island have discovered a method to protect themselves from the brutal males. Researchers have found that more than half of the Southern female elephant seals are skipping their regular mating interval and show up at the island as being pregnant a year after. This leads to the conclusion that those female elephant seals must have bred somewhere else, while at the same time, approximately 75% the

Read More
70 Words | 1 Pages

Coast Miwok first inhabited the island about 2,000 years ago. In 1863 during the Civil War, the U.S. Army built a base on Angel Island. They established Camp Reynolds for soldiers to live in. The army built batteries, which are gunning sites, around the island to protect San Fransisco. In the 1950’s, the army also built a project nike missile site, which is an anti-aircraft weapon (named after nike

Read More
799 Words | 4 Pages

As human beings we visit the Waikiki Aquarium and only see the place as a paradise home for the Hawaiian Monk Seals. We do not put ourselves into the perspective of the marine animal and see the aquarium through their eyes. My story, “Bumping Into Glass Walls” promotes the idea that we may think the Hawaiian Monk Seals enjoy the aquarium but that could be a false statement. We can come to a conclusion that the Hawaiian Monk Seals do not want to be at the aquarium but end up there because of threats in the Pacific Ocean.

Read More
376 Words | 2 Pages

They spread further by latching on to recreational boats that were later used in new, uninfected bodies of water.” states macalester.edu.

Read More
104 Words | 1 Pages

•The flu spread through human carriers, shipping lines, and along trade routes.

Read More
123 Words | 1 Pages

The Hawaiian Monk Seal (Neomonachus schauislandi) is a primitive, non-migratory phocid endemic to the islands of Hawaii (National Marine Fisheries Service, 2007). These primarily aquatic pinnipeds spend two-thirds of their lives in the water but require some land, often sandy beaches, to haul-out for reproduction and rest (NMFS, 2007). Monk seals have a polygynous mating structure but precise mating behavior and dominance establishment is unknown because they are aquatic processes not often observed (Jefferson et al., 1993). Females begin giving birth around age five to nine with each female producing a single pup every year (Johanos et al., 1994). After giving birth, females will stay and nurse their pups while fasting and energetically supporting

Read More
1087 Words | 5 Pages

This presents how not only has virus been located in the US and West Africa but in another known location as

Read More
500 Words | 2 Pages

The plague started in Asia. At first places such as China, Syria, and India were affected by the disease. It came to Europe by trade routes from India (where the outbreak was at the time). In response to hunger pangs fleas feed off of rodents (rats), and gave them the disease. When the rats were all dead, the fleas went to humans.

Read More
1198 Words | 5 Pages

In the spring of 1348, the most devastating pandemic in European history infected it’s first victim along the coast of Italy. The Bubonic Plague had established a foothold and would continue to rip its way through Europe for the rest of the 14th century. The Bubonic Plague is a vector borne illness that is transmitted by a flea that is typically found on rats. The plague originated in Eastern Asia, but found its way to Europe along trade routes carried by rats on Genoese ships. The Bubonic Plague was extremely devastating to European society in several ways including: major population destruction, harsh invalid accusations, and compounding medical issues.

Read More
268 Words | 2 Pages

The Great White Shark The Great White Sharks, known mostly because of their white underbellies, are one of the most powerful aquatic animals in the world. They can swim at about 25 Miles Per Hour (40 Kilometers per hour) because of their strong muscles and forceful tails. In addition to that, male Great Whites can grow around 11.5 to 13.1 feet long, while females can grow from 14.8 to 16.4 feet long. This paper will demonstrate how Great White Sharks are an important part of their ecosystem, how their diets work and will adequately describe their habitats. As predators in their ecosystem, Great White sharks help maintain the coral reefs and seagrass habitats.

Read More
474 Words | 2 Pages

The Bubonic Plague (Black Death) came to the eastern Mediterranean along the shipping routs. It reached Italy in spring of 1348. By the time the disease spread between 25% and 50% of Europes population had died (document 1, (Source: EyeWitnesstoHistory.com) the Bubonic Plague was spread because in this time there was not any place to put garbage and wast products like we have today, so they would just leave the trash/wast anywhere and everywhere and the result of this would bring rats and many other animals, and with these animals they had fleas and eventually the fleas would get to the people and the humans would get sick and spread it to everyone. Some symptoms of the Bubonic Plague were large swelling lumps which they called "buboes" sizing

Read More
652 Words | 3 Pages

The Mongols can be accredited to spreading it to Europe as a result of their actions at Caffa. The Mongol Army transmitted the disease to wherever they went. At Caffa, the Mongols catapulted their infected bodies into the city. As a result, it can be concluded that the Mongols were “responsible for infecting the inhabitants of Caffa”.(Wheelis) From there, the plague easily spread to Italy and then the rest of Europe.

Read More
476 Words | 2 Pages

In many stories things happen that are usually not expected by the reader .The short story is about a hunter that fell off his boat and ended up on an unknown island. Throughout the short story he meets a very suspicious general. That was also into hunting, but not the hunting someone would expect. Richard Connell develops the theme that people should expect the unexpected.

Read More
681 Words | 3 Pages

Romeo and Juliet and West Side Story are very similar. This is for the most part because West Side Story is based off the story, Romeo and Juliet. Romeo and Juliet is a 1597 play written by William Shakespeare about two young teenagers who experience “love at first sight”. Upon committing suicide, both of their deaths end the long feud between their two families. Very similarly, West Side Story is a 1961 movie/musical in which modern day Romeo and Juliet (who, in the musical, are known as Tony and Maria) are involved in a New York street gang war.

Read More
603 Words | 3 Pages

The virus generally disappears in a few weeks. Christopher Columbus is considered to be the explorer who brought measles (as well as many

Read More

More about Grey Seal Research Paper

Related Topics

Open Document