In a study published in BMC Public Health, an open access journal, tilapia was introduced into abandoned fish ponds at an altitude of 1,880m and the effect measured over six months on the numbers of mosquito immatures.
For centuries, the Zoque people of southern Mexico would venture each year during the Easter season deep into the sulfuric cave Cueva del Azufre to implore their deities for a bountiful rain season.
As part of the annual ritual, they release into the cave's waters a distinctive, leaf-bound paste made of lime and the ground-up root of the barbasco plant, a natural fish toxin. Believing the cave's fish to be gifts from their gods, they scoop up their poisoned prey to feed upon until their crops are ready to harvest.
Discovery of prehistoric remains in the Yucatan.
Small groups of sticklebacks (Gasterosteus aculeatus) reach consensus when choosing which of two replica fish to follow. As group size increases, the fish make more accurate decisions.
"It turned out that stickleback fish preferred to follow larger over smaller leaders," said Ashley Ward of Sydney University
"Not only that, but they also preferred fat over thin, healthy over ill, and so on. The part that really caught our eye was that these preferences grew as the group size increased, through some kind of positive social feedback mechanism."
Breathing hyperbaric air causes a syndrome of behavioral and subjective effects called nitrogen narcosis, which limits the work efficiency of divers and is ultimately life-threatening.
Why rebreather divers, even more so than open circuit divers, need to be in control and focused when they ascend.
It was 6:30 in the morning, and my dive buddy and I were hauling our gear back from the big zodiac speedboat after a thrilling midnight dive on the famous Elphinstone reef in the Red Sea near Marsa Alam, Egypt. While rinsing my gear, Ahmed—the local dive guide—started talking to me because I was diving a back plate, wing and long hose just like him, and he probably felt some kind of connection.
All three companies are affiliate members of the Sustainable Aviation Fuel Users Group (www.safug.org), which includes 23 leading airlines responsible for approximately 25 percent of annual aviation fuel use.
There is a recently developed term making its way into common use amongst the wider dive community, and that term is, citizen scientist. The science community is waking up to the fact that the common man and woman are valuable resources for acquiring many missing pieces in the jigsaw puzzle that is marine research, particularly for migratory species
Forty-two miles off the Egyptian coast, the Brothers Islands rise up from the floor of the Red Sea 800 metres below, forming two small, flat tabletops surrounded by steeply sloping fringing reefs.
In spite of Egypt’s current turmoil, I feel this exceptional country is still a place of interest and worth while including in anyone’s holiday itinerary. I recall enjoying the opportunity to tour many of the countries monuments, museums and being able to touch one of the huge pyramids that have surpassed the adversity of historical challenges.
The juvenile salt-water crocodile was near to death when the small boy found it stranded in a swamp far from the sea. Although greatly afraid, the boy decided to try and save the crocodile and eventually managed to get it back to the sea where it quickly recovered.
The two became best friends and went on to travel the world together, with the boy riding on the back of the crocodile as it swam across the seas.
