Some of the organisms such as Tesseropora Roseas (Barnacles) and Knobbly Winks have different adaptations, which allow them to survive in these harsh conditions. Competition with other organisms, availability of food and predation can also affect the abundance and distribution of rock-shelf organisms. To determine the abundance and distribution of these rock-shelf organisms a quadrat with an area of 0.5m2 was used. It was placed randomly in each location. Location 1 was above the high tide mark, Location 2 the tidal rock pools and location 3 the low tide mark.
They have two pectoral fins that are forked in on the sides which enable them to control their direction of movement. The fish also has a moveable jaw which allows it to bite into coral. The moveable jaw is small but strong and bony. Coloration is a important component to the fish. The Megladon fish has disruptive coloration, with its spots and stripes it is able to confuse their predators.
Younger lionfish have a unique tentacle above their eye sockets, which differs in appearance between species, but studies show that this tentacle has evolved over time in each species serving to attract new prey. Juvenile lionfish eat mostly invertebrates, but shift their diet to fish as adults and eat reef fish. Adult lionfish spread their pectoral fins and use them to "herd" prey. This is a very effective predatory style because it is unfamiliar to native Florida fish. However, Lionfish can have negative effects on the overall reef habitat as they can eliminate organisms which serve important ecological roles such as herbivorous fish which keep algae in-check on the reefs.
Farm raised fish versus wild caught Cul 110 exam #3 Alexis Halstead There have been many different long standing arguments about the differences between farms raised fish and wild caught fish. There are good arguments against which is better than the other. Although these farming practices have their difference, eating fish has great health benefits and that should also be taken into consideration when deciding which product you will be purchasing. Fish are widely advertised for there health benefits, but there are many different controversies surrounding how they caught and able to be produced in mass quantities. Eating about two servings of fish per week provides healthy amounts omega-3 fatty acids that can help to lower cardiovascular disease.
One important discovery Shubin made is Tiktaalik, which is a 375 million year old fossil. Tiktaalik is a fish that has scales and gills, but its head is flattened like that of a crocodile. Like most fish, Tiktaalik’s fins have ray bones enabling them to paddle in water, but the most amazing thing about it is that it has interior bones which allows it to lift off of the sea floor, something unordinary for a typical fish. It would use its limbs for support like a tetrapod. Shubin shows how fin structures of fish like Tiktaalik mark the beginning of the evolution into the mammalian paw and opposable thumb structures in the hands of today’s primates.
The number of swimming brine shrimp for Trial 4 was slightly less than that of Trial 1. This could be due to oxygen levels in the lab, or it could be due to human error in counting the numbers of eggs from the procedure, or counting the numbers of swimming brine shrimp and dead brine shrimp in analysis. Additionally, actual amounts of ethanol concentrations could have slightly varied due to human error in measuring the ethanol consistently among groups causing slightly variable viability rates. Water may also have splashed out of the dishes, contributing to a flaw in measurement. In the future, the entire study should be performed by individual groups in order to aid elimination of error.
Most jelly fish are dangerous as they sting other creatures, when touched by one of their tentacles. Clown fish are immune to stings thus why Marlin wasn’t affected. 14. Compare Dory, Bruce and Nemo, which is the best adapted for speed and why? Bruce is best adapted for speed, as he is a shark and needs to be fast to catch and hunt down his prey.
How many fish will you measure initially? (strong experiments always have more measurements). Explain in your own words what the control group is.
Student Project Outline -- Topic Choice: Summarize the current efforts to reduce bycatch – my focus will be on the bycatch of marine birds 1. Introduction: Provide brief overview of bycatch (define it) and general summary as to amount of bycatch per year. Introduce my focus on sea turtles – I will pick a leatherback and loggerhead turtles as a focus but indicate that all species are particularly susceptible and emphasize that all sea turtle species except the green sea turtle are endangered. 2. Provide information and visuals as to how they are inadvertently caught in longlines, and fish nets (especially shrimp nets) and estimates of numbers lost each year as bycatch.
Although it isn't clear in the paragraph whether Harry has a twin or not, if he did this could have a massive influence on his behaviour. Let's say Harry had an mono-zygotic twin, who shared a 100% concordance rate with him. Early twin studies generally found higher concordance for criminality amongst MZ than DZ twins, which would support the suggestion of a genetic influence. However, this research has said to be flawed due to a combination of small samples and poor methods of determining whether a particular twin pair was MZ or DZ. The rationale underlying the use of twins in explaining criminal behaviour is that if 1 MZ twin shows signs of aggressive behaviour, and the other one does too, then it is down to genetic influence.