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lionfish invasion essay
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In the last 30 years since the lionfish first appeared in the Atlantic Ocean, they have become a destructive nuisance. The lionfish species which are native to the Pacific Rim and Indian Oceans are now invading the Atlantic and Caribbean Oceans, eating any fish that can fit into it's mouth. Scientists don’t believe the invasion will ever be completely eradicated, however if the problem is recognized there are steps that can be taken to try and contain this invasion at a manageable level. Through education, fishing or hunting of the species and by teaching other species to eat the lionfish, there is hope humans can gain control over these invasive creatures. The lionfish not only grow at an alarming rate, but they are able to reproduce at an alarming rate in non-native oceans. An adult lionfish will grow between 12-15 inches in length in their native habitat, but have reported to grow at an alarming rate and have been caught at 18 inches and all the way up to 20 inches off the coast of Florida. This species re-produces so quickly due to the fact that the female lionfish will produce to gelatinous egg packets of 12,000 to 15,000 eggs a piece. These eggs packets will break apart and drift in the current, allowing these eggs to spread apart extremely quickly. These egg masses can float and drift apart for about 25 days before tiny microscopic lionfish larvae are born (Lionfish – Pterois volitans). These larvae will reach full maturity in less than a year, allowing them to reproduce and keep the cycle of the invasion going. In warmer climate waters such as the Atlantic and Caribbean ocean a lionfish is able to spawn every four days (Lionfish – Pterois volitans). Since the nutrient rich waters of these oceans allow the lionfish to n... ... middle of paper ... ...ar completely gaining control over the problem or solving it. Humans are just starting to understand exactly how this invasion is starting to affect not only our oceans, but the delicate reef life that is held inside them. Some countries throughout the affected are starting to see some promising results with the decrease of lionfish and rejuvenation of reef life. Our oceans are no where near out of the woods yet, and this invasion has not even come anywhere close to the end. This problem is one that humans created and can only be kept in check by human intervention. It's extremely important that everyone is aware not only about the lionfish invasion, but also aware on the destructive consequences that surround it. Through various methods between public education, fishing / hunting removal and working with local predators, our ocean standing a chance of surviving.
The nonnative species of the lionfish, living in tropical waters to depths far below is an unseen threat by first glance. Truth behold, this fish is a serious pest since the first sighting in Dania Beach back in the 1980s. Presently, it has grown out of its bounds and causes harm not only to the sea life but trouble to humans as well. An unmatched appetite with a fast and large reproduction to spawn its species in a matter of only a short time, makes this invasive fish at the top of a sounding alarm. Clever biological adaptations have made this fish a tough fighter to the ecosystem and only in the past few years have we learned to take effective measures to control their population to save our coral reefs.
The background of this article gives information that is necessary to understand the experiment. The shape of the pelvic girdle is an appropriate predictor of both phylogeny and movement in terrestrial vertebrates. However, in marine vertebrates, the gravitational forces typically applied to terrestrial pelvic girdles are not there and therefore have little impact on the shape of the girdle. Pelvic girdles of fish are generally not attached to the vertebrae and primarily are used as a place for muscles to attach and supporting of the fins. The authors discuss how in many cases the pelvic girdle could be removed and not result in any complications. However, there are some marine vertebrates that are capable of bottom walking on the ocean floor with their fins. In batoids, the pelvic fins are used for walking, which is when pelvic fins move in an alternating fashion, or punting, when both pelvic fins move at the same time. There is also augmented punting; this is when the vertebrate uses both the pectoral fins and the pelvic fins to generate more thrust, this action decreases the forces on the pelvic fins during a punt. While this locomotion would
Lionfish are not currently listed as threatened in their native range. However, the increase in pollution in coral reefs can negatively affect the lionfish's primary food sources (NOAA, 2011). If lionfish are unable to adapt to declines in their prey species, their numbers will decrease. Although between the increasing reef pollution and the Lionfish’s voracious appetite reef populations will more than likely be damaged beyond repair, they may even be close to elimination by the time the Lionfish population actually declines (Albins, 2013).
Overfishing is defined as a form of overexploitation where fish stocks are brought down to unacceptable levels. In the UN Food and Agriculture Organization’s 2 yearly report (SOFIA), it states how over half of the fish stocks, worldwide, are fully exploited. Other research has shown it only takes 10-15 years of industrial fishing to obliterate a tenth of the intended specie. Overfishing causes a ripple effect that hurts the entire ecosystem. The balance of chain depends largely on the interaction between the predator and the prey. For example, if the larger fish are removed than its prey begins to overpopulate, due to the lack of population control. The balance in the oceans are a urgent problem, around 90% of predatory fish stocks are depleted. The ripples can extend even further to land creatures like
When most people hear the word "shark", the image of a vicious killing machine pops into their head. They picture something out of the movie Jaws, where a massive Great White shark terrorizes an entire beach and eats dozens of people. However, this fictional story is nothing more than Hollywood entertainment. In the real world, the tables are turned. Humans are the ones who kill sharks, and not just by the dozens. It has been estimated that over 100 million sharks are killed every year by humans (http://www.iflscience.com). Some estimates claim that the actual number of sharks killed every year could be as high as 273 million (http://www.iflscience.com). In this research paper, I will inform you of the many ways that sharks are being killed,
Two friends go out for lunch to their usual favorite sushi restaurant. They are seated and given their menus, they knew they were going to get their usual but noticed the prices have increased. Prices have gone up, and some replaced with imitation fish meat, since the last time they ate there. What might have caused this? Due the demand of fish, the price for them also increases. It’s a simple supply and demand logic, but not only is it due to the demand for these fish, it can also be due to their rareness. Over-fishing can cause what is rare and which fish species isn’t. Commercial fishing may cause fish species to go extinct, or bring in new types of fish to take the place of the other fish. In tuna we
The article that I have chosen to write a summary of is the “Scourge of the Lionfish” article series by Carl Safina located at The New York Times website. There are 4 parts to this article, each basically talking about the invasive species of red lionfish that have taken over the Atlantic by storm, how they are impacting the marine life around the Atlantic, and some different ways fishermen have tried to gain control over the ever increasing population of these voracious predators.
For thousands of years scientist have been performing vivisections on animals to find information on new chemicals, drugs, and vaccines. Vivisection is when scientist perform dissections among living animals mostly for the purpose of educating and retrieving information. Experimenting on animals has become the tool that has helped us comprehend the body functions of an animal and how a disease transforms the bodily functions, but over the years it’s caused animal rights activists to question the usefulness and the sincerity of using animals for this purpose. Although animal research has been helpful in the past, it is morally wrong in the sense that experimenting on animals is not the only way to collect information. There are other alternatives
One of the governments main reasons for culling the sharks is because they are coming in too close to the shores and becoming a potential threat to swimmers. But why is this happening? This is due to a change in shark feeding habits, but because they are eating more human of course not! Rather because us humans are over fishing and eliminating the fish/food sources of which sharks normally feed on. This is forcing sharks to come in closer to find food. Us as humans have forced sharks to come in closer and are now killing sharks because of our a...
In the epoch of the Anthropocene, humankind is drastically changing the dynamic of life on Earth. Our oceans, in particular, face great danger. Technological advancements in fisheries is continuously increasing efficiency, making it easier to catch vast amounts of fish in short amounts of time. But, unfortunately, we are catching more than just the targeted species. As a result of technological advances, bycatch has emerged as a huge problem in fisheries around the world. We are depleting the oceans of the life that sustains us. According to the U.S. National Bycatch Report, in the United States alone, nearly two billion pounds of bycatch have been caught by the fishing industry (Karp, Desfosse & Brooke 2011). The National Marine Fisheries
You're planning a vacation to Hawaii and want to do some fishing while here. If you're planning to hop on a charter sport fishing boat or some other commercial offshore excursion, you don't have anything to worry about except for showing up at the dock on time.
Intro: You know what is absolutely delicious? Sushi. I mean who doesn’t like Sushi? But did you know that the yummy blue fin tuna that we eat in our Sushi is nearly extinct? But oh well, who really cares? There’s plenty of fish in the sea, right? Um… maybe not.
Imagine being trapped, abused, cramped, and caged all for the sake of either having your stripped flesh spoiled in a store, or thrown into the trash. Animals endure such conditions in factory farms across the world, suffering because so many people turn a blind eye to the things going on within the establishments that supply the world’s meat. It is not common knowledge for people to know about the abuse and inhumane actions that occur in these facilities, which are often called slaughterhouses and factory farms, but it should be. The conditions of animals and the incidents involving the well-being of the workers in these horrid affairs need to be known to the public and be shut down, even if most people would rather be kept in the dark about these types of controversies.
Did you know that more than 90 percent of all organisms that have ever lived on Earth are extinct? According to Pandey, the author of Humans Pushing Marine Life toward ‘Major Extinction’, nearly 10,000 species go extinct each year, and this rate is estimated to be 1,000 times higher than the natural extinction rate (1). Human beings are causing irreversible damage to the oceans and their wildlife, which is being led by two major reasons: Commercial fishing or over-fishing, which damaged the marine environment and caused a loss in the marine life diversity, and pollution, which is a primary way of the extinction causes that drastically modifies the marine life habitat. As a result of the commercial fishing and pollution, many of the marine species will start disappearing of the oceans. Briggs emphasizes that over-fishing “has induced population collapses in many species. So instead of having less than a hundred species at risk, as was the case some 30-40 years ago, there are now a thousand or more (10).”
There is no question, the is world faced by problematic challenges in feeding the world today and in the near future. The population is increasing expeditiously, in the last 50 years, the worlds population multiplied more rapidly than ever before, and is expected to grow at the same rate in the future. This population is going to have to be fed meaning the world is going to have to produce a lot more food.