Along the coast of Europe, clam worms (Nereis) live during the colder months in rock crevices and among algae.
Some female epitokes of clam worms (Nereis) produce a chemical substance called fertilizin that attracts the male epitokes and stimulates the shedding of sperm.
The marine worms of the class Polychaeta (e.g., clam worms and lugworms of the phylum Annelida) provide the first examples of a kind of courtship behaviour involving both visual and chemical displays initiated by some rather subtle environmental stimuli.
Perishables like clams, worms and crabs have a limited shelf life, something that DeCuffa keeps in mind when delivering bait by truck to Brooklyn, Long Island and upstate New York.
The regulation of translation of mRNAs by cytoplasmic elongation of the poly(A) tail was discovered some twenty years ago in the oocytes and early embryos of clams, worms, frogs and mice [1 6].
Horseshoe crabs don't harm anything except the small clams and worms they eat.
Some of the bacteria are free-living, others find a home in shrimps, clams and worms, which harvest them for food.
But in Alaska, Mr. Gill observed, the bar-tailed godwits were feasting on clams and worms as if they were not going to be able to eat for a very long time.
It's astonishing to consider that the lucky few — arthropods, snails, clams, jellyfish, worms and a few small four-legged creatures on land — that survived the worst extinction gave rise to everything that followed, including us.
In cold waters, organic matter like algae tends to fall straight to the bottom to nourish the clams and worms below, rather than getting grazed off the top as it does in more tropical seas.
