Audouinella
| Audouinella | |
|---|---|
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Scientific classification
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| (unranked): | Archaeplastida |
| Division: | Rhodophyta |
| Class: | Florideophyceae |
| Order: | Acrochaetiales |
| Family: | Acrochaetiaceae |
| Genus: | Audouinella Bory de Saint-Vincent |
Audouinella,also known asblack algae,[1]is a widespreadgenusofred algae,found inmarineandfreshwaterenvironments.[2]
The form known as "black brush algae"(or"black beard algae",BBAfor short) is a particular nuisance inaquaria,since mostalgae eaterfish and invertebrates avoid it.[3]
Description[edit]
J.B. Bory de Saint-Vincentnamed the genus in 1823, in honour of his co-editor in theDictionnaire Classique d'Histoire Naturelle,J.V. Audouin.
Black algae species are not all black; they grow as small tufts of red, brown, or black hairlike filaments on any solid surface – most dramatically in freshwater, on the edges of slow-growing leaves.[2] Itsthalliare composed of uniaxial filaments, the ends of which often contain elongate hairs.[2]
Audouinellareproduce viaspores,most commonlyasexually,whilesexual reproductionis known in rare cases.[2]
Black algae are typically tolerant of high levels ofpollution,acidity,and thrive on dissolvedphosphateandnitrates. In natural ecosystems, the genus that infests aquariums is found in unpolluted lotic systems.
Audouinellagrowth can be induced in planted aquariums by limiting and varying the CO2concentration.[citation needed] It has been tested for germination and new growth using fertilizers NO3and PO4,but results were negative from a decade of observations.[citation needed] While other possible means of promoting growth may exist, the adjustment of CO2concentration is the most consistent, as shown in practical tests by aquarists.[citation needed]
See also[edit]
References[edit]
- ^"Types of algae".Nuagli Aquarium. 15 February 2014.Retrieved13 May2019.
- ^abcdHuisman, John Marinus (2000).Marine plants of Australia.UWA Publishing. p. 28.ISBN978-1-876268-33-6.Retrieved9 September2020.
- ^Momchil (28 June 2018)."How topermanentlyget rid of black algae in your aquarium ".Aquanswers.Retrieved13 May2019.
External links[edit]
- "Audouinella(Bory de Saint-Vincent, 1823)".Vlaams Instituut voor de Zee [Flanders Marine Institute] (vliz.be).– taxonomic information on this alga.
- "Audouinella(Bory de Saint-Vincent, 1823)".World Register of Marine Species.
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