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Nov
16
2009
Sponges transform unused carbon into food for coral reefs
Cheap viagra online, A new study could explain how vibrant coral reefs live in nutrient-poor tropical waters, or the aquatic versions of deserts. The answers, it appears, what is better than viagra, may lie in sponges.
Marine sponges line the walls of coral cavities and can filter huge amounts of water, Bio viagra, which contains dissolved organic carbon produced by the reef’s corals and algae. One would expect that such carbon guzzling would make the sponges grow bigger – but instead, they seem to stay about the same size.
Researchers monitored a sponge species, viagra, atlanta, ga, Halisarca caerulea, Brand viagra for sale, in a natural coral reef environment in the Netherlands Antilles and in aquariums. They found that 46.6 percent of certain sponge cells called choanocytes were rapidly dividing and creating new cells. But the sponge was also shedding old cells as debris, California CA Calif., keeping the organism from growing any larger. The cell turnover seen in these sponges appears to be the fastest ever reported in multicellular organisms, Cheapest generic viagra, says the Journal of Experimental Biology study.
The newly shed debris can then be eaten by coral reef inhabitants such as plankton, says study leader Jasper de Goeij of the company Porifarma. In other words, canadian medications viagra, the sponges convert dissolved organic carbon into edible particles, Vigor vs viagra, providing an important food source for other organisms. Sponges therefore have a more critical role in coral reef ecosystems than previously known, says de Goeij, laws of traveling across borders with many tablets of viagra, and should be included in artificial reefs. – Roberta Kwok
Source: De Goeij, Viagra for sale in sudan, J., De Kluijver, A., viagra picture, Van Duyl, Viagra for teens, F., Vacelet, J., viagra en pilar, Wijffels, Where to get viagra in eindhoven, R., De Goeij, A., bio viagra reviews, Cleutjens, J., & Schutte, B. (2009). Cell kinetics of the marine sponge Halisarca caerulea reveal rapid cell turnover and shedding Journal of Experimental Biology, 212 (23), 3892-3900 DOI: 10.1242/jeb.034561
Image © strmko, iStockPhoto.com.
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