Adventure Ausrama Blog

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Australian jewel beetles are sexually attracted to stubby beer bottles. These are small bottles, brown in color, that fit comfortably in the hand. Darryl Gwynne wrote about the phenomenon in a post-doctoral paper. He had noticed the behavior 23 years ago. Ultimately, the opportunity arrived to inform the world. He was awarded the Ig Nobel Prize. Male beetles were observed mounting discarded stubbies. The bottles are the same tone of brown as female jewel beetles. Moreover, they glint in the sun like the wings of females. Mounting the bottles is dangerous. It usually ends in death for male beetles. They are either eaten by ants or are cooked in the hot sun. It is feared that the behavior will lead to a decline in beetle numbers. However, the beetles are still present in high numbers two and half decades after the behavior was first observed. http://www.adventure--australia.blogspot.com/ http://www.tysaustralia.blogspot.com/ http://www.feeds.feedburner.com/AdventureAustralia

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Coral reefs may look okay but on closer examination they may be dying. Overfishing, particularly in the Indian Ocean, causes eight steps that lead to reef collapse. Each step is a stage toward the end of a reef. Keeping fish numbers up is important. When the level falls below 1000 kilograms of fish per hectare seaweed growth increases as well as urchin activity. This is a major indication of a problem. If fish density falls below 300 kilograms a crisis is reached. Until now, coral cover has been used as a measure of coral health. This research shows that coral cover is the last threshold: the reef is heading toward ecosystem collapse. It is during the first three stages that constructive change will save a reef. Fishing should be regulated. If a reef is in the final five stages, it is near impossible to save it. Only marine reserves have really healthy coral reefs because fishing is restricted. Unmonitored reefs fare the worst. A management system for each reef needs to be

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Many animals have been saved from extinction by captive breeding programs. A creature of the desert, the Arabian oryx, became extinct in the wild in 1972. It has symbolic significance for Arabian people. Individual animals were brought together from Saudi Arabia, Abu Dhabi and Qatar. A watershed occurred in 1982 when some oryx were released into the wild. By 2011 the number of wild oryx reached more than 1,000. The species is no longer endangered. It is now classed as vulnerable. Much has been learned from this successful intervention. This has been done before. In the 19th century the American bison was saved. Today there are 30,000 in the wild and another 30,000 have been bred for meat. In Australia only 50 helmeted honeyeaters were alive in 1990. The Healesville Sanctuary has bred these birds releasing about 20 every year. Australia has adopted a policy of releasing endangered animals onto islands because cats and foxes easily kill native species. The greater stick-nest

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