Quantcast

Latest Rick Grosberg Stories

Male Marine Snails Get Stuck Babysitting
2012-08-29 05:54:00

Watch the Video: A Snail Sex Story April Flowers for redOrbit.com - Your Universe Online From egg-laying to hatching, the male marine whelk, Solenosteira macrospira, does all the work — even though few of the babies are his. Researchers at the University of California, Davis, have classified S.macrospira as belonging to a small club of reproductive outliers characterized by male-only childcare. Throw in extensive promiscuity and sibling cannibalism, and the species has one of...

Sea Star Evolution
2012-07-26 14:08:55

How quickly can new species arise? In as little as 6,000 years, according to a study of Australian sea stars. "That's unbelievably fast compared to most organisms," said Rick Grosberg, professor of evolution and ecology at UC Davis and coauthor on the paper published July 18 in the journal Proceedings of the Royal Society B. Grosberg is interested in how new species arise in the ocean. On land, groups of plants and animals can be physically isolated by mountains or rivers and then...

0b26908833e6fd533a132fdf0a5013ad
2009-11-11 09:21:10

The kelp forests off southern California are considered to be some of the most diverse and productive ecosystems on the planet, yet a new study indicates that today's kelp beds are less extensive and lush than those in the recent past. The kelp forest tripled in size from the peak of glaciation 20,000 years ago to about 7,500 years ago, then shrank by up to 70 percent to present day levels, according to the study by Rick Grosberg, professor in the Department of Evolution and Ecology and the...

2005-08-26 07:10:00

Astrobiology Magazine -- Clashing colonies of sea anemones fight as organized armies with distinct castes of warriors, scouts, reproductives and other types, according to a new study. The sea anemone Anthopleura elegantissima lives in large colonies of genetically identical clones on boulders around the tide line. Where two colonies meet they form a distinct boundary zone. Anemones that contact an animal from another colony will fight, hitting each other with special tentacles that leave...

ced68fcbf406705cd47190010b360ad91
2005-08-23 13:40:00

Clashing colonies of sea anemones fight as organized armies with distinct castes of warriors, scouts, reproductives and other types, according to a new study. The sea anemone Anthopleura elegantissima lives in large colonies of genetically identical clones on boulders around the tide line. Where two colonies meet they form a distinct boundary zone. Anemones that contact an animal from another colony will fight, hitting each other with special tentacles that leave patches of stinging cells...


Word of the Day
sough
  • A murmuring sound; a rushing or whistling sound, like that of the wind; a deep sigh.
  • A gentle breeze; a waft; a breath.
  • Any rumor that engages general attention.
  • A cant or whining mode of speaking, especially in preaching or praying; the chant or recitative characteristic of the old Presbyterians in Scotland.
  • To make a rushing, whistling, or sighing sound; emit a hollow murmur; murmur or sigh like the wind.
  • To breathe in or as in sleep.
  • To utter in a whining or monotonous tone.
According to the OED, from the 16th century, this word is 'almost exclusively Scots and northern dialect until adopted in general literary use in the 19th.'
Related