Cause Of Stress In Aquaculture

Obviously, the poison that is used in fishing (mainly cyanide) is harmful for the ocean because it may poison other fish over the years. Also, the usage of explosives are harmful because they all kill off things such as coral, and the damaging of coral reefs can take decades before it reverts back to its normal state. To reduce or totally eliminate the way these local practices are impacting the environment, we can place restrictions on what can be used in fishing, and how much you can catch. For example, we can limit fishers to only 10 fish a day. This would give the fish plenty of time to reproduce and would keep the population of the fish steady.

This proves that another environmental threat that blue crabs faces are fishing because they may not be a type of fish, but, like most crabs, they are fished, caught and sold. This allows overfishing to be a problem. Not to mention, another environmental threat that this fascinating animal, the blue crab, faces is climate change. Corresponding with the text, “Climate change is another major threat to life in the oceans. Warming ocean waters, rising sea levels, and violent storms disrupt the lives of many species and affect fragile marine ecosystems,” (Digan 14).

More often found on the wildlife and vegetation, especially in the tissues of fish in the rivers, thus causing serious health issues to humans eating high amounts of fish. Overall, the California Gold Rush based on history did not have many contributions and positives to the environment. The race for economic prosperity, and striking gold came at a cost with the destruction of the environment. The difficulty of extracting gold took a toll on the farmlands, hillsides, and mountains of the Sierra Nevada

The wells the colonists made were risky because of the high chance of salt water intrusion. Also, you have to remember the human waste festering in the water, and even when the tides rush in it doesn’t move the waste out. Therefore, there could be diseases in the water, which could kill the colonists. Remember that the people in the 1600s could not filter water like we can so the colonists (because of the lack of freshwater) had to drink the contaminated water, which could lead to death. This is why I believe that one of the major factors of the colonists deaths is the environment.

In her experiment she founded “ fish found these naturally irritating chemicals unpleasant too. Thier gills beat faster, and they rubbed the affected area on the walls of the tank, lose intrest of food and had problems making decisions.” You can say fishes almost react the same as humans do when in pain or sick. When something irritates me the first thing I always do is rub the area that's bothering me, and when most people are sick or suffering from an illness there are most likely to be distraught. If fishes can feel irritation on there body and rub against the side of the tank then they must be feeling a type of pain or burning sensation that would cause pain. If a fish couldn't feel pain they wouldn't run against the side of the tank neither would their gills would beat faster then normal.

These plants sometimes look red due to their photosynthetic pigments. Now they may not seem harmful, but they are a huge threat to fish and humans. The reason they are a threat to fish is because the algae irritates the fish’s gills, eventually suffocating them. The reason they are harmful to humans is because they cause millions of dollars of damage because of they have to clean up a massive amount of dead fish, beaches have to be closed to the problem is resolved, fisheries and shell fisheries are closed to harvesting. Unfortunately, people also have to go to the hospital to get the bio toxins removed because they ate this specific

Coral reef systems in the Caribbean are presently stressed due to coral bleaching, overfishing, global climate change, and disruptive algal growth (Wilkinson and Souter 2008). The addition of a piscivorous, predatory invasive species, such as lionfish, will cause permanent damage to that ecosystem. Lionfish have caused a reduction in forage fish biomass, an increase in algal growth due to their removal of herbivorous fish, and an increase in competition with native fish (Morris et al. 2009). Lionfish have few, if any, natural predators due to the presence of venomous dorsal, ventral and anal spines (Halstead et al.

Unit 2 Assignment: Diagnostic Writer’s Response Whether it is a little or a lot, everyone experiences stress at some point. Stress does not always have a negative effect, most of the time the effects can be positive. On the other hand stress is associated with the development of most major mental health problems such as depression, Posttraumatic Stress Disorder (PTSD), and pathological aging (Marin, 2011). It has also been linked to all leading physical causes of death such as heart disease, cancer and stroke (Cohen, Janicki-Deverts, & Miller, 2007). There are many careers that are very stressful and one which regularly tops the list of most stressful careers is being an enlisted service member.

If they did not put any restrictions or laws then the red snapper would have gone extinct. This would of lead to many disadvantages towards fishermen and restaurants economically. If there was not any action taken immediately it would of harm our environment. This shows how humans can make a huge impact. The Red Snapper is a popular fish that needs to be preserved.

3. Review of literature 3.1 Stress and its types: Stress is an essential mediator of human behaviour. Immediate physiological response to any type of stressor facilitates survival of the species at its maximum. Despite of normal homeostatic regulatory mechanism, the stress responses can become maladaptive. Chronic stress, for example immobilization, exposure to noise, irradiations, psychological stress can leads to a host of adverse health consequences, including cardiovascular diseases, neurodegeneration, obesity, depression and early ageing (McEwen et al, 2004). Acute stress or single exposure to stressor of minutes to hours will be not produce any ill effect as body have protective and adaptive effects managed by hormones and other physiological agents.