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Ten adult Panamanian land crab Gecarcinus quadratus in a circle.

Ten adult Panamanian land crab Gecarcinus quadratus in a circle.
Ten adult Panamanian land crab Gecarcinus quadratus in a circle.
Ten adult Panamanian land crab Gecarcinus quadratus in a circle.
Ten adult Panamanian land crab Gecarcinus quadratus in a circle.
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Ten adult Panamanian land crab Gecarcinus quadratus in a circle.
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02/04/2009
graphics/gyory/IMG_3239.JPG
Submitted by MIT/WHOI Joint Program student Joanna Gyory for the Oceanus article about her work at LJL, Panama.
Image of The Day caption:
Square land crabs (Gecarcinus quadratus) form a defensive ring in a collection bucket at the Liquid Jungle Lab in Panama. Research by Joanna Gyory, a graduate student in the MIT/WHOI Joint Program in Oceanography, revealed the previously unknown life cycle and behavior of the crabs, which live on land but emerge from their burrows at the first sign of rainy season and swarm nearby beaches to lay their eggs in the ocean. This photo also graces the cover of the newest issue of Oceanus magazine, which features an article on Gyory and her crabs.
Caption from Oceanus magazine, Vol. 48, No. 2, cover image, caption on pg. 3:
Captured in a red bucket, square land crabs (Gecarcinus quadratus) create a circle, putting their backs to the wall and their pincers out. Joanna Gyory, an MIT/WHOI Joint Program graduate student, collected these specimens near the Liquid Jungle Lab in Panama. Her research revealed the previously unknown life cycle and behavior of these crabs, which live on land but emerge from their burrows at the first sign of the rainy season and swarm the beaches to lay their eggs in the ocean.
Photo courtesy of Joanna Gyory
© Woods Hole Oceanographic Institution
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