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While other fish are known to stroll—and some even have "hands" (pictures)—this is the first time the behavior has been seen in a fish related to the first land-walkers. The find could mean that our ability to walk originated underwater, researchers say.
- Marine Dark Matter
A fish captured during the Malaspina Expedition Credit: CSIC / JOAN COSTA. If you descend below two hundred metres in the world’s oceans, you enter the mesopelagic, or twilight, zone. The temperature plummets, pressure increases, light levels drop off...
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- Ilustração Científica - Alguma História (em Inglês- Espólio De John Hay Library )
Tulipa Gesneriana From The Temple Of Flora, 1799 By Robert Thornton. Hand-coloured engraving: 57cm x 46cm. Robert Thornton vowed that his book, Temple of Flora would be the most magnificent botanical publication ever. Exotic plants...
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How Evolution Copies Itself by Elizabeth Pennisi on 4 April 2012 ...
- Faz 100 Anos Que Nasceu Jacques Cousteau
Jacques-Yves Cousteau was born a hundred years ago today. "Captain Cousteau," became synonymous with the ocean. "The sea is everything," he said. (Jacques-Yves Cousteau centennial: "The sea is everything"). French inventor, engineer, explorer, naturalist,...
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Quando éramos peixes
Recuando muito atrás, uns meros 450 milhões de anos (em relação à capacidade de marcha) nascemos de peixes e há um que comprova essa evolução! E curiosamente trata-se de um peixe-gato africano!! E saber que já fomos ditadores, monarcas, narcotraficantes, ecologistas, vilões e etc...e numa época algures nos 65 milhões se extinguiram dinossaurios e estamos cá como consequência disso.Leiam toda esta interessante e marcante descoberta neste artigo da National Geographic,13 Dezembro 2011, em inglês.
While other fish are known to stroll—and some even have "hands" (pictures)—this is the first time the behavior has been seen in a fish related to the first land-walkers. The find could mean that our ability to walk originated underwater, researchers say.
(Related pictures: "Walking Fish a Model of Evolution in Action.")
In the lungfish, "this ability is surprising, because lungfish don't have feet!" study leader Heather King said via email.
Based on observations of the fish's movements in glass tanks in the lab, the study showed the lungfish were able both to push off a solid surface and move along it using their pelvic fins. (Watch a brief video of the lungfish walking.)
"We found that the lungfish uses a range of gaits, from walking (alternating the limbs) to bounding (moving the limbs synchronously)," said King, a biologist studying at the University of Chicago, who collaborated with past National Geographic Committee for Research and Exploration grantee Neil Shubin on the study. (The National Geographic Society owns National Geographic News.)
(Related: "Fossil Fish With Limbs Is Missing Link, Study Says.")
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- Marine Dark Matter
A fish captured during the Malaspina Expedition Credit: CSIC / JOAN COSTA. If you descend below two hundred metres in the world’s oceans, you enter the mesopelagic, or twilight, zone. The temperature plummets, pressure increases, light levels drop off...
- Biofoto Da Semana- Encontro Raro Entre Gorila E Chimpanzé
National Geographic / Michael PolizaUm encontro raro de um bebé gorila e um chimpanzé examinando folhas no Evaro Gorilla Orphanage,Gabão....
- Ilustração Científica - Alguma História (em Inglês- Espólio De John Hay Library )
Tulipa Gesneriana From The Temple Of Flora, 1799 By Robert Thornton. Hand-coloured engraving: 57cm x 46cm. Robert Thornton vowed that his book, Temple of Flora would be the most magnificent botanical publication ever. Exotic plants...
- Como A Evolução Copiou A Si Mesma
How Evolution Copies Itself by Elizabeth Pennisi on 4 April 2012 ...
- Faz 100 Anos Que Nasceu Jacques Cousteau
Jacques-Yves Cousteau was born a hundred years ago today. "Captain Cousteau," became synonymous with the ocean. "The sea is everything," he said. (Jacques-Yves Cousteau centennial: "The sea is everything"). French inventor, engineer, explorer, naturalist,...