Essay On Ctenophora

The movement and distribution of marine organisms has always been a main focal point of marine studies. With organisms such as Ctenophora, what role does temperature and rainfall play in their movements? To get a better understanding of how population densities change with weather, samples were taken during different periods of precipitation and temperature; rain the day before, clear the day before, warm temperatures, and cool temperatures. In the end, there were minor differences between the densities of Ctenophora per 3.5 liters, but not significant enough to make a conclusion of temperature and rainfall directly affecting the distribution of Ctenophora. If currents change because of an increase or decrease in rainfall or temperature, then …show more content…
This allows them to actively hunt and escape from predators, but in most cases, they are found simply suspended in mid water or floating with the current (Haddock, 2007). This could explain the lack of Ctenophora in the area. The Ctenophora could have floated with the tide and depending on the angle of the tide to the cliffs could have placed the comb jellies in a different location or near the cliffs, but out of reach for collection. In addition, Ctenophora have been known to be located in areas without a lot of mixing of the water column according to Hermes W. Mianzan and company’s study (2010). This means the jellies could have gone against the tide, or been moved by the currents, to be situated further out, or further down. If they were actively evading areas of high mixing it would be to avoid contact with the rocks and the constant wave patterns of the tide. Ctenophora are very delicate and while they can regenerate some parts of their body if beaten up enough then there might be too much damage (Nosrati, etal., 2013). Tides are influenced by more than just rain and temperature, so it is possible that the tide could have been abnormally strong on the clear cool day, which lowered the