User:Medeangelis/sandbox
From Wikipedia, the free encyclopedia
Laminaria is a genus of 31 species of brown algae commonly called "kelp". Some species are also referred to as tangle. This economically important genus is characterized by long, leathery laminae and relatively large size. Some species are referred to by the common name Devil's apron, due to their shape,[1] or sea colander, due to the perforations present on the lamina.[2] It is found in the north Atlantic Ocean and the northern Pacific Ocean at depths from 8 to 30 m (26 to 98 ft) (exceptionally to 120 m (390 ft) in the warmer waters of the Mediterranean Sea and off Brazil).[3] Laminaria form a habitat for many fish and invertibrates. [4]
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Laminaria hyperborea | |
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Genus: | Laminaria |
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c. 30 species; see text |
![](http://upload.wikimedia.org/wikipedia/commons/thumb/9/97/Laminariasetchellii2.jpg/640px-Laminariasetchellii2.jpg)
The life cycle of Laminaria has heteromorphic alternating of generations which differs it from Fucus. At meiosis the male and female zoospores separate then come together after germinating into male and female gametophytes. The female egg will mature in the oogonium until the male sperm fertilizes it.[5]Life-Cycle: The most common form of Laminaria is its sporophyte phase, a structure composed of the holdfast, the stipe, and the blades. While it spends its time predominately in the sporophyte phase, it alternates between the sporophyte and its microscopic gametophyte phase.[3]
Laminaria japonica (J. E. Areschoug – Japón) [6] is now regarded as a synonym of Saccharina japonica[7] and Laminaria saccharina is now classified as Saccharina latissima.[8]