pisaster ochraceus वाक्य
उदाहरण वाक्य
मोबाइल
- Another predator on barnacles is the starfish species " Pisaster ochraceus ".
- The " Pisaster ochraceus " could live as long as twenty years.
- "Pisaster ochraceus " uses its tube feet to handle its prey.
- When " Pisaster ochraceus " is present there is a diverse intertidal community.
- It may take as long as 10 years for the starfish, Pisaster ochraceus, to recolonize, scientists say.
- The researcher, from Oregon State University, studied Pisaster ochraceus, a sea star found on the Oregon coast.
- At the larval stage, " Pisaster ochraceus " are filter feeders and their diet consists of plankton.
- Certain starfish ochre sea star ( " Pisaster ochraceus " ), which does not feed on sea pens.
- In 2006, a mass die-off of the purple sea star ( " Pisaster ochraceus " ) occurred off the coast of British Columbia.
- In an experimental removal of " Pisaster ochraceus ", it was shown that " Mytilus californianus " becomes almost completely dominant of the intertidal community.
- It is sometimes reported that the lurid rocksnail is in fact the gumboot chiton's only predator, but others list such animals as the sea star " Pisaster ochraceus ", some octopus species,
- These two species have different aboral spines and coloration which allows one to distinguish between the species . " Evasterias troscheli " may be confused with " Pisaster ochraceus " at times as well.
- It can be distinguished by its smaller disk size and longer, tapering rays which are often thickest a short distance out from their base rather than at the base as in " Pisaster ochraceus ".
- This species of seastar is often considered a keystone species in many intertidal regions . " Pisaster ochraceus " is a predator of the California mussel, " Mytilus californianus " and reduces its abundance.
- Mussels hold their valves together very securely but " Pisaster ochraceus " can insert part of its everted stomach, or some digestive juices, through the narrow gap that exists where the byssal threads emerge from the shell.
- Two species that can be mistaken for " Pisaster ochraceus " are " Pisaster giganteus ", which has blue rings around white or purple spines, and " Pisaster brevispinus ", which is pink with small white spines.
- Snails displayed a flight response with movement rates up to 10 cm / min, often accompanied by shell twisting, between 70 % and 100 % of the time after contact with the following predatory seastars : " Leptasterias hexactis ", " Pycnopodia helianthoides ", " Pisaster ochraceus ", and " Evasterias troscheli ".
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