| Colpomenia | |
|---|---|
 | |
| Colpomenia sinuosa | |
Scientific classification  | |
| Domain: | Eukaryota |
| Clade: | Diaphoretickes |
| Clade: | SAR |
| Clade: | Stramenopiles |
| Phylum: | Gyrista |
| Subphylum: | Ochrophytina |
| Class: | Phaeophyceae |
| Order: | Ectocarpales |
| Family: | Scytosiphonaceae |
| Genus: | Colpomenia (Endl.) Derbès & Solier, 1851 |
| Type species | |
| Colpomenia sinuosa (Mertens ex Roth) Derbès & Solier | |
Colpomenia is a genus of brown macroalgae (or seaweed) in the family Scytosiphonaceae. [1]
Colpomenia is currently composed of 11 confirmed species with Colpomenia sinuosa as its type species. [1] [2] Earlier taxonomic placements of the members of this genus have been problematic starting from the ambiguous morphological delineation up until the discovery of the polyphyly within the genus using molecular data. [3] Two significant taxonomic revisions have been started to clarify the polyphyly within the genus. First, was the transfer of all previous members of Colpomenia with erect, finger-like thalli into the new genus Dactylosiphon based on morphoanatomical, molecular, and life history observations [4] . Second, was the formal separation of Colpomenia tuberculata (now Encephalophycus tuberculatus) from the rest of the genus due to the stark differences in its morphology molecular phylogeny. [5]
The morphology of this genus has been a great This genus is characterized by having a saccate thallus that could be globular, tuberculate, and branched; membrane thickness of about 150–500 μm; 1–3 layers of ovoidal or polygonal cells for the cortex; 2–6 layers of medullary cells; and sori that are associated with 1–3 celled paraphyses (ascocysts). [6] [7] [8] [9] [10] [11] [12]
Colpomenia is a cosmopolitan genera and is found from the tropics up to the Arctic. [7] [12]
Colpomenia species can either be epilithic (attached on a substrate) or epiphytic (attached on another seaweed) and could observed from the intertidal zone up to the shallow subtidal. [9]
There are three observed life history strategies for this genus: (1) heteromorphic diplohaplontic, the gametophyte (N) and sporophyte (2N) are both free-living and equally distinct bodies, however, the gametophyte (N) has a diminutive form and releases anisogamous (i.e., unequal in form and size) gametes to form the zygote (2N) which will later on develop into the sporophyte (2N) that will release unispores that will develop into the gametophytes (N); (2) heteromorphic, monophasic, wherein the female gamete (N) alone gives rise to the sporophyte (2N), and the female unispore develops into the gametophyte; and lastly, (3) monomorphic monophasic, the sporophyte independently regenerates through the production of plurispores while the gametophytes also independently grow via the production and settlement of its zooids. [11] [10]
There is no known culture technology for Colpomenia species and it is not traditionally being consumed.
Natural product chemistry research on this genus has revealed that it harbors important bioactive compounds (i.e., sulfated polysaccharides) that have the potential to limit tumor growth. [13] [14]
This genus is not commercially utilized and it is not threatened therefore there are no management strategies applied to this genus.
Acetabularia is a genus of green algae in the family Polyphysaceae. Typically found in subtropical waters, Acetabularia is a single-celled organism, but gigantic in size and complex in form, making it an excellent model organism for studying cell biology. In form, the mature Acetabularia resembles the round leaves of a nasturtium, is 4 to 10 centimetres tall and has three anatomical parts: a bottom rhizoid that resembles a set of short roots; a long stalk in the middle; and a top umbrella of branches that may fuse into a cap. Unlike other giant unicellular organisms, which are multinucleate, members of this genus a single nucleus located in the rhizoid and allows the cell to regenerate completely if its cap is removed. The caps of two Acetabularia may also be exchanged, even from two different species. In addition, if a piece of the stem is removed, with no access to the nucleus in the rhizoid, this isolated stem piece will also grow a new cap.
Bryopsis is a genus of marine green algae in the family Bryopsidaceae. It is frequently a pest in aquariums, where it is commonly referred to as hair algae.
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Scytothamnales is an order of brown algae.
Ralfsiales is an order of crustose brown algae containing two families.
Hydroclathrus is a genus of perforate brown alga, of the phylum Ochrophyta and the class Phaeophyceae.
Amphiroa is a genus of thalloid red algae under the family Corallinaceae.
Silvetia is a genus of brown algae, commonly known as rockweed, found in the intertidal zone of rocky seashores of the Pacific Ocean. These were originally classified as members of the genus Pelvetia. In 1999, Silvetia sp. was created as a separate species from Pelvetia canaliculata due to differences of oogonium structure and of nucleic acid sequences of the rDNA. It was renamed in honor of Paul Silva, Curator of Algae at the Herbarium of the University of California, Berkeley. There are three species and one subspecies.
Gavino Trono Jr. is a Filipino marine biologist dubbed as the "Father of Kappaphycus farming". He was conferred the rank of National Scientist of the Philippines for contributions to the study of tropical marine phycology, focusing on seaweed biodiversity. He is currently a professor emeritus of the University of the Philippines Marine Science Institute.
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Phyllariopsis brevipes is a species of large brown algae, found in the subtidal zone in the Mediterranean Sea. It is the type species of the genus. Unlike other large brown macroalgae, it has a habitat requirement to grow on the living thalli of the crustose red alga Mesophyllum alternans.
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Scytosiphonaceae is a family of brown algae in the order Ectocarpales.
Rosenvingea is a genus of brown algae first described by Børgesen in 1914.
Mesospora negrosensis is a species of macroalga occurring in the western Atlantic.
Sphacelaria is a genus of brown macroalgae in the family Sphacelariaceae.
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