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Latest Crab Stories

2012-04-02 10:00:35

As any comic book lover knows, when superheroes band together the bad guys fall harder. The strength that comes in numbers is greater than the sum of its parts. The same holds true, researchers have recently learned, when different species of crabs (genus Trapezia) and snapping shrimp (Alepheus lottini) in the central Pacific band together to defend their coral homes from hungry seastars. In these frequent conflicts "one-plus-one doesn't always equal two, sometime it is more," explains...

How Crabs Avoid Getting Eaten
2011-11-26 05:08:41

Despite their simple compound eyes crabs have evolved a smart way to tell the difference between friend and foe, new scientific research has revealed. Scientists from The Vision Centre have found that fiddler crabs quickly learn to recognize if an approaching creature is a threat, a mate or a harmless passer-by - according to its direction of approach. “Fiddler crabs have extremely poor sight, with no depth perception and no ability to see in detail,” says Ms Chloe...

2011-09-27 09:37:17

Researchers have found that a species invasion that starts at the upstream edge of its range may have a major advantage over downstream competitors, at least in environments with a strong prevailing direction of water or wind currents. Scientists from the University of Georgia, University of New Hampshire, Smithsonian Environmental Research Center and University of Vermont studied populations of European green crab, Carcinus maenas. The species was introduced to the East Coast of North...

Crabs Put The Pinch On Marshlands
2011-09-26 10:58:40

   Hungry purple marsh crabs threaten Cape Cod salt marshes [ Watch the Video ] If you take a quick glance at the marsh next to Saquatucket Harbor in Harwich Port, Mass., you will notice right away that some of the grass is missing. The cordgrass there, and all around Cape Cod, has been slowly disappearing for decades. "The cordgrass that's being destroyed here is the foundation species that builds salt marshes," explains marine ecologist Mark Bertness of Brown...

King Crabs Invading Antarctica
2011-09-07 07:43:05

  Global warming is the most likely cause of a growing number of king crabs that have been marching along the sea floor toward West Antarctica, according to a report by biologists on Wednesday. The intruder, 'Neolithodes yaldwyni Ahyong and Dawson', a bright-red deep-sea predator that had previously been spotted only in the Ross Sea, on the other side of West Antarctica, is now living and reproducing in abundance on the western edge of the icy continent. Writing in the journal...

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2011-07-06 08:00:00

Research Bolsters Importance of Horseshoe Crab Spawning for Migrating Shorebirds Speculation that the welfare of a small, at-risk shorebird is directly tied to horseshoe crab populations is in part supported by new scientific research, according to a U.S. Geological Survey- led study published in Ecosphere, a journal of the Ecological Society of America. Population health of the red knot, a shorebird species whose population has plummeted over the last 15 years, has been directly tied to the...

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2011-05-17 12:15:00

Scientists found that the first human colonists in Hawaii wiped out land crabs that were unique to the area about 1,000 years ago. Fossils have been found at altitudes of 3,000-feet, which is unusual for a crab. The researchers say they identified the species by comparing it with living relatives on other Pacific islands. They wrote in the journal PLoS One that early settlers brought in animals like pigs and rats, which helped wipe out the crabs. The researchers describe this as the first...

2011-05-17 11:44:45

University of Florida researchers have described a new species of land crab that documents the first crab extinction during the human era. The loss of the crab likely greatly impacted the ecology of the Hawaiian Islands, as land crabs are major predators, control litter decomposition and help in nutrient cycling and seed dispersal. Their disappearance was caused by the arrival of humans to the islands and resulted in large-scale changes in the state's ecosystem. Researchers said the full...

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2011-04-18 11:49:56

Fiddler crabs would all end up as dinner for seagulls were it not for their sophisticated threat detection system, vision scientists have found. Researchers in The Vision Centre have announced an important advance in understanding how simple animals distinguish between threats and non-threats by looking for a combination of visual cues. "These crabs can't distinguish shapes and must constantly compete with birds that are bigger and have sharper sight," says Dr Jan Hemmi from the ARC Centre of...

2011-01-25 11:50:59

Genome-based technique helps identify a virus lethal to blue crab A research effort designed to prevent the introduction of viruses to blue crabs in a research hatchery could end up helping Chesapeake Bay watermen improve their bottom line by reducing the number of soft shell crabs perishing before reaching the market. The findings, published in the journal Diseases of Aquatic Organisms, shows that the transmission of a crab-specific virus in diseased and dying crabs likely occurs after the...


Latest Crab Reference Libraries

Crab Spiders, Thomisidae
2014-06-19 08:13:57

Thomisidae is a family that holds around two thousand species of crab spiders that can be found throughout the world. Although the name crab spider has been used to refer to a large number of species, it is most often used to refer to members of this family, especially the flower crab spider. Many members of this family have flat bodies that resemble those of crabs and others hold their two front legs in positions that crabs are known for or move in sideways motions as crabs do. Although...

Crab-eating Raccoon, Procyon cancrivorus
2012-07-20 08:42:55

The crab-eating raccoon (Procyon cancrivorus) is native to South and Central America. Its range includes Trinidad and Tobago, Costa Rica, and extends to the northern areas of Uruguay and Argentina. It prefers a habitat with abundant water resources. Although the name implies that this raccoon’s diet consists of only crabs, it also consumes other crustaceans, like lobster, as well as fruits, amphibians, and turtle eggs. The crab-eating raccoon is similar in appearance to the common...

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2008-05-04 22:56:03

The Vernal Crab (Liocarcinus vernalis), is a small shallow-water crab found in the northeast Atlantic. It is commonly used as bait for Black Fish. Photo Copyright and Credit

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2008-05-04 22:54:32

The Great Spider Crab (Hyas araneus), is a species of crab found in Atlantic waters and the North Sea, usually below the tidal zone. It was reported around the Antarctic Peninsula in 2003. This was most likely due to transportation by human agency. Photo Copyright and Credit

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2008-05-04 22:30:19

The Halloween Crab (Gecarcinus quadratus or Gercarcinus ruricola), also known as the moon crab, should not be confused with the Halloween hermit crab. They dig burrows in rainforest habitat and are native to Central America. It lives in the forest at least some of its adult life. They have lungs that need to be moist all the time. If not, they could dry out and die. The Halloween crab is very territorial and will fight back if threatened. Photo Copyright and Credit

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Word of the Day
snash
  • To talk saucily.
  • Insolent, opprobrious language; impertinent abuse.
This word is Scots in origin and probably imitative.