Science news articles about 'horseshoe crabs'

... - Restrictions by U.S. east coast states on harvesting horseshoe crabs, whose eggs provide food for endangered migrating shore birds, have boosted the animal's population after ...

... crabs. Long-term surveys of red knots showed that the average weight of red knots when ... since their primary food source, eggs of horseshoe crabs, has been reduced. The study also revealed that red ...

... years from 1992 to 1997, reported harvest of crabs grew 20 fold from about 100,000 ... during their northward migration where they gorge on horseshoe crab eggs in preparation for their continued migration ...

Declining numbers of a shorebird called the red knot have been linked to bait use of horseshoe crabs.

The loss of the horseshoe crab would be tragic, researchers say, because so many contemporary life forms depend on them.

... have puzzled over the origins of the paired grasping appendages found on the heads of scorpions and horseshoe crabs. The researchers suggest that Schinderhannes gives a hint. Their appendages may be ...

A missing link in the evolution of the front claw of living scorpions and horseshoe crabs was identified with the discovery of a 390 million-year-old fossil by researchers at Yale and the University ...

The "remarkable," yard-long, horseshoe crab-like arthropods roamed in swarms of up to a thousand animals, a new study suggests.

... grind their food. These coxal endite-type growths can still be seen today in species such as horseshoe crabs, which use them to grind up their prey before pushing it into their backward-facing mouths. ...