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Caulerpa taxifolia asexual reproduction

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Caulerpa taxifolia is a species of seaweedan alga of the genus Caulerpa. Native to the Indian Oceanit is widely used ornamentally in aquariumsbecause it is considered attractive and neat in Caulerpa taxifolia asexual reproduction, and is easy to establish and care for.

The alga has a stem rhizome which spreads horizontally just above the seafloor.

Introduction

Caulerpa taxifolia asexual reproduction Caulerpa taxifolia asexual reproduction stem grow vertical fern-like pinnaewhose blades are flat like those of the yew Taxushence the Caulerpa taxifolia asexual reproduction name taxifolia. Unlike most aquarium macro algae, C. Behind this appearance, the plant is a typical macro alga, without the vascular system to transmit nutrients and cells that plants originally evolved on land have.

Caulerpa taxifolia is a single celled organism, however this is often overlooked because of its complexity and size.

Caulerpa taxifolia asexual reproduction taxifolia has been described as storing in its "leaves" a single chemical, ' caulerpicin ', that is noxious to fish and other would-be predators, though not toxic to the water around it.

This is in contrast to plants which produce a variety Caulerpa taxifolia asexual reproduction toxins, but in Caulerpa taxifolia asexual reproduction amounts. On the other hand, studies have found that there is reduced pollution and toxicity in waters where it grows invasively, as around port cities in the Mediterranean. Original concerns about it decreasing biodiversity of fauna have also been allayed, as species counts have shown this Caulerpa taxifolia asexual reproduction about the same.

Caulerpa taxifolia asexual reproduction staff at the Wilhelma Zoo in Stuttgart, Germany found Caulerpa taxifolia asexual reproduction a specific strain of this alga thrived in cold aquarium environments.

Selective breeding under exposure to both chemicals and ultra-violet light produced even hardier Caulerpa strains.

Invasive Species Compendium

It is thought that the seaweed was accidentally released into coastal waters of the Mediterranean Sea just below Jacques Cousteau's Oceanographic Museum of Monaco in This concern earned the algae the dubious nickname "Killer Algae" after the title of a book written on the subject.

The director of the museum argued that this invasion probably happened naturally, the result of ocean currents carrying a tropical species into the area. The parties bickered publicly for years over whether the species was natural or invasive, and whether the museum had released it or not, at the expense of sound scientific research on the species and its ecological significance.

Beds of the algae typically inhabit polluted, nutrient-rich areas such as sewage outfalls, [5] explaining its spread among port cities in the Mediterranean Sea. This actually reduces the pollution in those areas, as the caulerpa consumes it: In an eight-year study of Caulerpa beds in the French Bay of Menton by the European Oceanographic Observatory of Monaco based within the Museum of Monaco [6]it was found that the alga reduced pollution and aided in the recovery of native Posidonia seagrass.

Despite claims that as many as half of fish species have disappeared from areas where Caulerpa grows, [ citation needed ] scientific studies have shown that fish diversity and biomass are equal or greater in Caulerpa meadows than in seagrass beds, [8] that Caulerpa had no effect Caulerpa taxifolia asexual reproduction composition or richness of fish species, [9] and that species richness and epiphytic plant diversity is greater in Caulerpa than in pure sea grass.

Thus, in contrast to widely publicized reports Caulerpa taxifolia asexual reproduction the contrary, the species appears to have many beneficial ecological effects on aquatic communities in the Mediterranean Sea.

Aquarist Jean Jaubert, director of the aforementioned Oceanographic Museum of Caulerpa taxifolia asexual reproduction, has said Caulerpa taxifolia asexual reproduction the affected areas in the nearby Bay of Menton have been exaggerated fold. The aquarium strain Caulerpa taxifolia asexual reproduction asexuallythat is, vegetatively: Rate of growth can be as fast as a centimeter per day.

If any small part is severed from the rest of the alga, this small part Caulerpa taxifolia asexual reproduction regrow into another alga. Anchors of ships and fishing nets can serve as carriers for Caulerpa taxifolia asexual reproduction. Thus, this alga has been found to jump from the coast of one port city to the coast of another port city.

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The natural strain has both male and Caulerpa taxifolia asexual reproduction individuals and additionally reproduces sexually. Gametes are expelled from Caulerpa taxifolia asexual reproduction sex and meet to form a zygote which then goes through two larval stages before becoming an adult.

Inthe strain was found on the coast of California U. The California colonization was small enough to be considered controllable: Then chlorine was poured in through tubes which fed into certain openings in the tarpaulin: The killing of such other organisms was not desirable but was deemed preferable to letting the algae grow unchecked.

The appearance off Caulerpa taxifolia asexual reproduction California coast was most probably caused by an aquarium owner improperly dumping the contents, allowing C. California has since passed a law forbidding the possession, sale or transport of Caulerpa taxifolia within the state.

There is also a federal law under the Noxious Weed Act forbidding interstate sale and transport of the aquarium strain Caulerpa. Researchers at the University of Nice in France have been studying a tiny aquatic slug which is a natural predator Caulerpa taxifolia asexual reproduction C.

This slug is believed to feed exclusively on C. As the slug does so, it absorbs the alga's poison.

Key words: Caulerpa taxifolia, invasive...

The slug has an enzyme which neutralizes the noxious effect of the poison, and at the same time, the poison protects the slug from being eaten by fish. However, this slug cannot survive in the cooler waters of the Caulerpa taxifolia asexual reproduction and, therefore, is unable to control the invasive alga there. From Wikipedia, the free encyclopedia. This article includes a list of referencesbut its sources remain unclear because it has insufficient inline citations.

Please help to improve this article by introducing more precise citations. February Learn how and when to Caulerpa taxifolia asexual reproduction this template message. Life out of bounds: Bioinvasion in a borderless world. University of Chicago Press, Chicago. Ecological disaster or media hysteria? Submitted during the hearing in California concerning the proposed bill available at http: No deleterious alterations in Posidonia beds in the Bay of Menton France eight years after Caulerpa taxifolia colonization.

Journal of Phycology Italian Journal of Zoology 65 Supplement: Impact Caulerpa taxifolia asexual reproduction Caulerpa taxifolia colonization on the littoral ichthyofauna of north-western Mediterranean sea. Retrieved from " https: Webarchive template wayback links Articles lacking in-text citations from February All articles lacking in-text citations Articles with 'species' microformats All articles with unsourced statements Articles with unsourced statements from April Articles with unsourced statements from September Commons category link is on Wikidata Pages using YouTube with unknown parameters.

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