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Transcript of Atolla Wyvillei
Deep Sea Jellyfish
Deep Ocean Biome
They have been found in the Arctic, Antarctic, North Atlantic, Pacific, Gulf of Mexico, and waters off the coast of New Zealand.
. Live between 3,280 and 13,000 feet below sea level
. From 29' to -2' Fahrenheit
. Reproduces asexually by developing into polyps that then produce buds that grow into larvae
. Can also reproduce sexually by attaching on to each other's hypertrophied tentacles
. Feed on crustaceans and other organic material that floats by in the water around them. They trap their prey with their tentacles and then eat them.
The Atolla wyvillei is a bio-luminescent jellyfish. This means that it produces it's own light. When a predator tries to harm them, they emit a blue flashing light which lures in other larger predators to eat the threat.
The light is blue because it's the color that travels the farthest in the dark habitat where they live.
2. Red Coloration
The jellyfish are usually a dark red color, this is because it helps them camouflage and blend into the dark water.
The need for this adaptation is that the Atolla has no other defense system against certain predators such as viperfish. The bioluminescence attracts animals such as squid to come eat the viperfish and save the Atolla wyvillei.
The cause for the jellyfish to adapt the red color could have also been a predator and this is it's second defense against them so that they could hide and not be seen. Also since jellyfish are normally transparent when they eat you can see the food that is being digested inside of them. The red coloration hides their stomach and other intestines as they digest their food.
An Intestinal Sketch of the Atolla wyvillei
Kingdom - Animalia
Phylum - Cnidaria
Class - Scyphozoa
Order - Coronatae
Family - Atollidae
Genus - Atolla
Species - Wyvillei
3. One tentacle longer than the rest
The Atolla wyvillei use their tentacles to capture their prey floating by in the water, having one hypertrophied tentacle that is longer than any of the others makes it easier to capture prey that is further away.
They may have adapted this trait because of a lack of resources needed to hunt larger or more distant prey. Instead of having to swim over and be right on top of them to where the prey would be able to swim away faster, the jellyfish adapter the longer tentacle so they could grab the prey and retract it very quickly without having to be so close.
They also use this tentacle to find mates because they have no eyes to see them. The longer tentacle also helps them to find mates that are farther away from them.
Not using bioluminescence
Atolla Wyvillei has a commensalistic relationship with the squid. When being attacked by a predator the jellyfish sends out flashes of blue light which attract the squid who gets a meal from whatever the predator may be, and saves the Atolla benefiting both organisms.
Over time the Atolla wyvillei evolved to live in deep, cold water in order to stay away from predators that lived in the more shallow ocean regions. They also developed their bioluminescence, which acts as a defense system against the few predators they find in the deep ocean. As they grow from a polyp into a medusa, or fully developed jellyfish, the Atolla develop tentacles used to capture food and reproduce. They also move deeper and deeper into colder regions in the ocean as they grow older.
Variations of The Adaptation
1. Dim flashes
2. Semi-bright flashes
3. Bright flashes
Adaptation - The bioluminescence
The sea floor shifted causing an extreme decline in the water level. All the squid left the area for a deeper environment; however, the Atolla wyvillei stayed.
The population of the Atolla wyvillei decreased dramatically because of the lack of squid. When the Atolla was being attacked, there was no squid to help when it's blue light flashes went off to attract them to eat the viperfish predator.
The Atolla was still able to eat the small crustaceans and phytoplankton in the water surrounding them, but were constantly being preyed upon by the viperfish with no protection.
The jellyfish adapted by using their light flashes to temporarily blind the predator instead of attracting others. They accomplished this over a long period of time by natural selection. Only the jellyfish with the brightest bioluminescence lived producing offspring who also had brighter light flashes.
Dim flashes were no longer an adaptation for the Atolla wyvillei
The brighter flashing jellyfish are now more abundant because they are able to survive easier than the ones with dim flashes and therefore are able to produce more offspring with the same characteristic
The squid no longer lived near the Atolla wyvillei so the symbiotic relationship between the two is no longer there. If they migrated back with the water level still low the relationship would not be the same. The bright flashed would temporarily blind the squid just like any other predator unless the jellyfish were to adapt again.
*Not this drastic
Need brighter flashes