Overfishing

THE CONSERVATION STATUS AND DISTRIBUTION OF NILE CROCODILES IN THE OLIFANTS RIVER: MPUMALANGA, SOUTH AFRICA OBSTRUCT The outlook for Nile Crocodiles in the Olifants River does not look optimistic since the increase in capacity of the Loskop and Flag Boshiela Dams, Crocodile population was left with no basking or nesting sites and has and has declined over the past 30 years shortly after the massingire Dam in the Mozambique filled to full capacity an estimated 160 Crocodiles died in the Olifants…

The Saldanha Bay Oyster Company has two different buildings where they get the oysters market ready. The first is situated by the ocean, where they deliver the oysters. The oysters are also being cleaned and assessed in this building, they are checked to see if they are fully grown and/or if they have diseases. After this process, they are taken to the second facility which is a few meters away from the first one, and in this facility the oysters are further cared for and developed, getting…

Sara salort Watts Humanities 6-7 Native American’s compare and contrast Chinook and Umatilla people have a lot in common and a lot of differences that you might Not know of , let me show you. They have a lot of similarities based off of food.For example,the umatillas main source of food was the Columbia river due to the fact that they couldn't reach the ocean they mostly got salmon,eels, and sturgeon etc. They gathered This food around winter,spring, and fall for the salmon runs.…

The restoration of the San Joaquin river may flop harder than the salmon that will die along with it. In Bill McEwen’s article, from the Fresno Bee, “River Plan too Fishy for my Taste Buds”, he explains why the San Joaquin river should not be restored. Bill McEwen used to be a journalist at the Fresno Bee for thirty-five years until he retired and became a local district representative under Jim Costa. The Fresno Bee, where McEwen’s article was published, is located in Fresno, California. Its…

In summer of 2013 the documentary Blackfish premiered in select theaters and on CNN. This film highlights the reality of SeaWorld -- behind closed doors. It focuses on Tilikum, a 12,500 pound bull Orca (Cowperthwaite). Tilikum’s tragic story became the inspiration for the documentary. This highly controversial film has been the root cause of numerous protests and many recent changes within SeaWorld. Just one year after Blackfish SeaWorld went down 48% in the stock market and lost 7% of their…

In his original findings, John Endler (1978) reported that male guppies in high predator areas tend to have patterns that resemble their environment so they don’t stand out. Guppies with low or no predation, tend to not blend in and are brighter with more and larger spots (Endler, 1978). Endler thought that this could be happening because color patterns are molded by natural selection and sexual selection. Although brighter males are often preferred by the females, they are also more likely to…

The Caribbean spiny lobster Panulirus argus (Latreille, 1804) supports the most valuable fishery in Cuba, and generates a net income of around US$70 million per year, it provides direct employment to 1,110 fishers and indirect employment to approximately 7,800 people (Puga et al. 2006). The total catch of spiny lobster grew until the early-mid 80s, when reached about 12,000 t. In the early 90s, landings decreased along with the Cuban economy, but by the middle of the 90s it began to recover, but…

The reading states that zebra mussel has long been spreading out from its original habitats and has now reached parts of North America. therefore it poses a serious threat to freshwater fish populations in all North America and provides three reasons for support. However, the professor explains that zebra mussel is not likely to the serious threat to the freshwater fish population and refutes each of the author's reasons. First, the article claims that it is possible that zebra mussel…

14.1 The Big Picture 4. Yes, it is likely that there will be competitive exclusion between the fish and ducks. Competitive exclusion does not only mean that one species is killed off it also means that it can “also result in two species sharing different parts of a niche”(pg.249). The ducks and fish don’t share the same ecological niche which is “the part of the environment that a species uses to survive and reproduce”(pg.248). This is also proven by the fact that it states in the textbook that…

Baleen whales undergo the longest annual migrations of any animal (Rice and Wolman 1971, Stone et al. 1990, Rasmussen et al. 2007). The function has generally been accepted as an evolutionary response to the need to feed in colder waters and reproduce in warmer waters (Corkeron and Connor 1999, Learmonth et al 2006). The location of feeding and breeding grounds along migration routes were initially inferred from stomach contents of stranding data and whaling logs (e.g., MacKintosh 1945, Scammon…