The main predator is the juvenile common starfish ( " Asterias rubens " ).
2.
It includes several of the best-known species of sea stars, including the ( Atlantic ) common starfish, " Asterias rubens ", and the northern Pacific seastar, " Asterias amurensis ".
3.
In the Clyde sea fishery for scampi ( " Nephrops norvegicus " ) in Scotland, the unwanted invertebrates that get caught up in the trawl include " O . ophiura ", as well as the starfish " Asterias rubens ".
4.
At low tide, sandy areas are exposed between the rocks and these support a fauna characteristic of sediment shores including Common starfish " Asterias rubens " and burrowing animals such as the Razor shell " Ensis arcuata ", the Thin tellin " Tellina fabula " and the Sea potato " Echinocardium cordatum ".
5.
"" Pecten maximus " swims but this is generally limited to escape reactions, the main predators which cause this reaction when the scallop detects them are the mollusc eating starfish " Asterias rubens " and " Astropecten irregularis " while starfish which do not feed on molluscs cause limited jumping or valve-closing reeactions.
6.
Echinoderms such as the brittle star " Ophiothrix fragilis " are frequently seen with their arms protruding from rock cracks, whilst the starfish " Asterias rubens " and the sea urchins " Echinus esculentus " and " Psammechinus miliaris " occasionally form part of the community, as does the whelk " Buccinum undatum ".
7.
The giant " Marthasterias glacialis " is the most sighted starfish, but other smaller species do exist such as purple " Asterias rubens ", the tiny " Asterina gibbosa " and the exotic-looking " Ophiothrix fragilis " brittle star . " Paracentrotus lividus " is the general urchin locally and has diverse colour varieties including purple, green and pink.
मोबाइल