Astrephomene
| Astrephomene | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Viridiplantae |
| Phylum: | Chlorophyta |
| Class: | Chlorophyceae |
| Order: | Chlamydomonadales |
| Family: | Goniaceae |
| Genus: | Astrephomene |
| Species | |
| |
In taxonomy, Astrephomene is a genus of green algae, specifically of the Goniaceae.[1][2] The genus was first described in 1937 by Pocock and named by Pockock in 1953 (Stein 1958).
Description
Astrephomene gubernaculifera is a colonial, flagellated volvocine green algae. It consists of 16, 32, 64 or 128 cells, 2 to 7 of which are small and oriented such that their flagella form a rudder (Stein 1958). Each cell is surrounded by a gelatinous matrix and contains an eyespot, two flagella and 1-3 contractile vacuoles at the anterior end.
Astrephomene gubernaculifera can reproduce sexually or asexually. During asexual reproduction, the anterior end of all cells of the daughter colony is outside after the first nuclear and cytoplasmic division; this type of asexual reproduction is unique among the colonial volvocine green algae (Pocock 1953). Astrephomene gubernaculifera has two mating types that reproduce to form zygotes.
Habitats
Astrephomene gubernaculifera is often found in organically rich temporary pools, often in pasture ponds. It typically persists for 1–3 weeks after ponds are formed in beginning of the wet season (Pocock 1953).
It has been collected from South Africa, Australia and the United States (Pocock 1953).
References
- ↑ Nozaki, H.; Kuroiwa, T. (1992). "Ultrastructure of the extracellular matrix and taxonomy of Eudorina, Pleodorina and Yamagishiella gen. nov. (Volvocaceae, Chlorophyta)". Phycologia. 31 (6): 529–541. doi:10.2216/i0031-8884-31-6-529.1. Retrieved 9 June 2014.
- ↑ See the NCBI webpage on Astrephomene. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19.
Further reading
Scientific journals
- Nozaki H, Onishi K, Morita E (2002). "Differences in pyrenoid morphology are correlated with differences in the rbcL genes of members of the Chloromonas lineage (Volvocales, Chlorophyceae)". J Mol Evol. 55 (4): 414–430. doi:10.1007/s00239-002-2338-9. PMID 12355262.
External links
Scientific references
- PubMed references for Astrephomene
- PubMed Central references for Astrephomene
- Google Scholar references for Astrephomene
Scientific databases
- NCBI taxonomy page for Astrephomene
- Search Tree of Life taxonomy pages for Astrephomene
- Search Species2000 page for Astrephomene