). A strain of this green seaweed, native to the Indian and Pacific Oceans, escaped public and private aquariums in California, Japan, Australia, and Monaco. The Australian alien seaweed Caulerpa taxifolia var. SUMMARY: Caulerpa taxifolia, a green alga with a circumtropical distribution, was observed for the first time in the Mediterranean in 1984, At present it covers an area of 1000-2000 ha, which is increasing by a factor of 2 to 10 annually. J.D. The green macroalgal species Caulerpa taxifolia is indigenous to tropical/subtropical Australia, ranging as far south as 28 and 29 15â²S on the Australian mainland east and west coasts, respectively. Joan XXIII s Biologists blame Caulerpa for devastating marine ecosystems in the Mediterranean Sea and off the coast of Australia. The Mediterranean strain was reported in 2000 to be found in California waters (green in map above). Caulerpa taxifolia is known to have crowded out the sea grasses in the Mediterranean that had provided food and shelter for a variety of fish and invertebrates, a â¦ Among the conclusions on â¦ The coenocytic green alga Caulerpa racemosa colonized the Mediterranean some time after the opening of the Suez Canal in 1869. Comptes Rendus de l'Académie des Sciences (III, Sciences de la Vie) , Vol. 318: 1219-26. 1998). There have been proposals to introduce species of sacoglossan opisthobranchs in to the Mediterranean in During the first decade of the Mediterranean â¦ But something happened after specimens of the plant were imported in the 1970s by the 3. The supposed cold-tolerance of Caulerpa taxifolia (Caulerpa) is a noxious marine alga native to tropical Australia. Adaptive colouration of Mediterranean labrid fishes to the new habitat provided by the introduced tropical alga Caulerpa taxifolia June 2002 Journal of Fish Biology 60(6):1486 - 1497 2001). Summary of Invasiveness Top of page C. taxifolia is a green marine macro-algae native to tropical waters of the Indian, Pacific and Atlantic oceans. The deep-water dispersal of the tropical alga Caulerpa taxifolia (Vahl) C. Agardh, introduced into the Mediterranean in 1984, was investigated. distichophylla are probably the result of introduction events from southwestern Observations made from the French Navy submarine âGriffonâ showed the presence of the alga at depths of 45â100 m off the most densely invaded coast (near Monaco). Photoautotrophic metabolism of Caulerpa taxifolia (Chlorophyta) in the NW Mediterranean John R. M. Chisholm1*, Jean M. Jaubert1,2 'Observatoire Océanologique Européen, Centre Scientifique de Monaco, Avenue Saint-Martin The alga Caulerpa taxifolia has been introduced into the Mediterranean, where it has reached pest proportions in many areas. Since then local fishermen asked for support to counteract the effects of 3): 000-000 SCIENTIA MARINA 2003 BIOLOGICAL OCEANOGRAPHY AT THE TURN OF THE MILLENIUM. EPIBIONTIC MEIOFAUNA OF CAULERPA TAXIFOLIA 1 SCI. The alga is naturally cold tolerant and has been discovered in 14 estuaries in â¦ Seasonal light requirements and temperature tolerance of the Mediterranean green alga Caulerpa taxifolia (Vahl) C. Agardh were examined by means of photosynthetic assays. Caulerpa taxifolia is reported from the tropical waters in the Caribbean south of Florida where it is native and does not present problems (yellow in map above). Caulerpa taxifolia normally grows in small, discreet clusters in tropical Pacific waters, dying if the water temperature drops below 70 degrees. It has spread widely in the Mediterranean, replacing native plants (such as seagrasses) and depriving marine life of food and habitat. An invasive algae, Caulerpa taxifolia, was discovered in San Diego County's Agua Hedionda Lagoon on June 12, 2000, and subsequently in Huntington Harbor. Effect of Caulerpa taxifolia on the productivity of two Mediterranean macrophytes Esther Ferrer*, Amelia Gömez Garreta, M. Antonia Ribera Laboratori de Botànica, Facultat de Farmàcia, Universität de Barcelona, Avda. "Caulerpa taxifolia in the Western Mediterranean: Accidental Introduction or Migration from the Red Sea." Caulerpa taxifolia has not been reported in earlier marine floras of the Mediterranean, and its sudden appearance has suggested that it may be a recent introduction. The tropical green seaweed Caulerpa taxifolia (V AHL) C.A GARDH (Caulerpales) which is invading the Mediterranean is shown to contain trace amounts of two further novel terpenes, 7,7âCâdidehydroâ6âhydroxyâ6,7âdihydrocaulerpenyne (= (4S, 6S,1E)â3â[(Z)âacetoxymethylidene]â6âhydroxyâ11âmethylâ7âmethylidenedodecaâ1,10âdienâ8âyneâ1,4âdiyl â¦ MAR., 67 (Suppl. Another hypothesis proposes that C. taxifolia and Caulerpa mexicana Sonder ex Kützing are morphological variants of one another and hence conspecific taxa. Simulations of Caulerpa taxifolia evolution in the north Mediterranean Sea. It is commonly known as sea grapes (along with the related Caulerpa lentillifera) and is found in many areas of shallow sea around the world. A non-native kind of Caulerpa was released into the Mediterranean where a bream, the Saupe ( Sarpa salpa ) eats it. Scientific papers and Highest photosynthetic rates (P max) were obtained in late fall (17.9 mg O 2 g â1 organic dry weight h â1), while low values were observed from January to April (7.2-4.0 mg O 2 g â1 organic dry weight h â1). Mediterranean, the control of C. taxifolia has involved a number of methods at a number of locations, but efforts apparently have merely slowed the rate of spread at some places rather than achieving complete elimination (G. Ceccherelli, pers. The slender Caulerpa previously reported as C. taxifolia from southeastern Turkey (Gulf of Iskenderun) also belongs to C. distichophylla. (2001), but rather from sub-tropical areas in Queensland (north-eastern Australia). Caulerpa taxifolia (M. Vahl) C. Agardh (invasive aquarium strain): this strain, first recorded in the Mediterranean in 1984 (Meinesz & Hesse 1991), is genetically identical to the strain cultivated in aquaria of western Europe (Jousson & al. More photographs of Caulerpa taxifolia taken by Meinesz. The Mediterranean strain of Caulerpa taxifolia and Floridaâs tropical strain have featherlike, grass-green fronds with flattened branchlets that are 0.6-1.0 millimeters wide (1/ 64-3/ 64 inches). A A green alga native to tropical waters, it has been highly invasive in the Mediterranean Sea. comm. For For most of the past century it has remained conï¬ned to the southeastern Mediterranean, but over the past several years the species has been distichophylla is therefore proposed. Short-term effects of nutrient enrichment of the sediment and interactions betweenm the seagrass Cymodocea nodosa and the introduced green alga Caulerpa taxifolia in a Mediterranean bay. The effects of warming and ocean acidification on growth, photosynthesis, and bacterial communities for the marine invasive macroalga Caulerpa taxifolia Alexandra J. RothâSchulze Centre for Marine BioâInnovation, University of New South Wales, Sydney, New South Wales, Australia The Caulerpa taxifolia unofficial websiteâa seaweed unlike any other. One case, however, did come under scientific scrutiny and Caulerpa just might have been at the wrong place at the wrong time. Limu Lad here, Take a look at this fact sheet on Caulerpa taxifolia, a highly invasive Chlorophyte in the Mediterranean: Here's a video entitled "Killer Algae" (43min), take a look at the ecological impacts from the How an invasive alga species (Caulerpa taxifolia) induces changes in foraging strategies of the benthivorous ï¬sh Mullus surmuletus in coastal Mediterranean ecosystems S. LONGEPIERRE*, A. â¦ Western and eastern Mediterranean populations of C. taxifolia var. Caulerpa racemosa is a species of edible green alga, a seaweed in the family Caulerpaceae. They said the algae species transformed vast areas of the Mediterranean into watery wastelands. The new combination Caulerpa taxifolia var. C. taxifolia that colonised the Mediterranean did not originate from southern NSW, as suggested by Meinesz et al. Abstract On the basis of morphological and molecular studies, we identified the Australian endemic green alga known as Caulerpa distichophylla along the coasts of Sicily (Italy, Mediterranean Sea). In areas where it is native, Caulerpa taxifolia is not invasive; its growth is controlled by factors such as grazing marine predators (for example, mollusks) that co-evolved with the alga. distichophylla, after being established along the Turkish Mediterranean coast in 2006, was recorded in Southern Sicily in 2007. It has been observed that Caulerpa species can reproduce both sexually and asexually, but sexual reproduction seems to be rare, occurring most often at warm temperatures. J Exp Mar Biol Ecol 217:165-177. Today, more than 90% of the total cover of C.taxifolia is found in the north-western Mediterranean (3.8 Meinesz et al. alga Caulerpa taxifolia (Vahl) C. Agardh in 1984 (Meinesz and Hess, 1991), the UNEP organized a workshop on the invasive Caulerpa species in the Mediterranean (UNEP, 1999).
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