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Species
Alexandrium
IUCN
NCBI
EOL Text
Depth range based on 12765 specimens in 20 taxa.
Water temperature and chemistry ranges based on 2422 samples.
Environmental ranges
Depth range (m): 0 - 500
Temperature range (°C): -2.058 - 27.590
Nitrate (umol/L): 0.232 - 14.664
Salinity (PPS): 24.378 - 39.081
Oxygen (ml/l): 4.600 - 9.192
Phosphate (umol/l): 0.071 - 1.268
Silicate (umol/l): 0.927 - 39.813
Graphical representation
Depth range (m): 0 - 500
Temperature range (°C): -2.058 - 27.590
Nitrate (umol/L): 0.232 - 14.664
Salinity (PPS): 24.378 - 39.081
Oxygen (ml/l): 4.600 - 9.192
Phosphate (umol/l): 0.071 - 1.268
Silicate (umol/l): 0.927 - 39.813
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
License | http://creativecommons.org/publicdomain/mark/1.0/ |
Rights holder/Author | Ocean Biogeographic Information System |
Source | http://www.iobis.org/mapper/?taxon_id=598648 |
Barcode of Life Data Systems (BOLD) Stats
Specimen Records:148
Specimens with Sequences:122
Specimens with Barcodes:44
Species:18
Species With Barcodes:17
Public Records:90
Public Species:16
Public BINs:1
Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
Alexandrium is a genus of dinoflagellates, with many species related to toxin production leading to Paralytic shellfish poisoning.[1] The dinoflagellate cysts produced by this species are considered much more toxic than swimming cells.[2] Enzyme electrophoretic data [3] and RNA genetic analysis [4][5] show two of the species, Alexandrium fundyense and A. tamarense to be closely related, while mating compatibilities even suggest them to be varieties of a single heterothallic species.[6]
Recent molecular work demonstrates an Alexandrium tamarense complex (Atama complex, including A. tamarense, Alexandrium fundyense, Alexandrium catenella) and that none of the three original morphospecies designations forms monophyletic groups in the present SSU-based and previous LSU-based [7] phylogenetic trees, i.e. these species designations are invalid. This currently needs further investigation.[8]
See also[edit]
- ^ Anderson, D.M. 1998. Physiology and bloom dynamics of toxic Alexandrium species, with emphasis on life cycle transitions. NATO ASI series, vol. G41. Physiology of harmful algal blooms. Edited by Anderson, DM, Cembella, AD and Hallegraeff, GM.
- ^ Dale, B., Yentsch, C. and Hurst, J. 1978. Toxicity in Resting Cysts of the Red-Tide Dinoflagellate Gonyaulax excavata from Deeper Water Coastal Sediments. Science 201, 1223-1224.
- ^ HAYHOME, B.A., ANDERSON, D.M., KULIS, D.M. & WHITTEN, D.J. 1989 Variation among congeneric dinoflagellates from the northeastern United States and Canada. I. Enzyme electrophoresis; Marine Biology, 101: 427-435.
- ^ SCHOLIN, C.A. & ANDERSON, D.M. 1994 Identification of group- and strain-specific genetic markers for globally distributed Alexandrium (Dinophyceae). I. RFLP analysis of SSU rRNA genes; Journal of Phycology, 30: 744-754.
- ^ SCHOLIN, C.A., HERZOG, M., SOGIN, M. & ANDERSON, D.M. 1994 Identification of group- and strain-specific genetic markers for globally distributed Alexandrium (Dinophyceae). II. Sequence analysis of a fragment of the LSU rRNA gene; Journal of Phycology, 30: 991-1011.
- ^ ANDERSON, D.M., KULIS, D.M., DOUCETTE, G.J., GALLAGHER, J.C. & BALECH, E. 1994 Biogeography of toxic dinoflagellates in the genus Alexandrium from the northeastern United States and Canada; Marine Biology, 120: 467-478.
- ^ Lilly, E.L., Halanych, K.M., Anderson, D.M., 2007. Species boundaries and global biogeography of the Alexandrium tamarense complex (Dinophyceae). J. Phycol. 43 (6), 1329–1338.
- ^ Lilibeth N. Miranda, Yunyun Zhuang, Huan Zhang, Senjie Lin, 2012. Phylogenetic analysis guided by intragenomic SSU rDNA polymorphism refines classification of ‘‘Alexandrium tamarense’’ species complex. Harmful Algae 16: 35-48.
License | http://creativecommons.org/licenses/by-sa/3.0/ |
Rights holder/Author | Wikipedia |
Source | http://en.wikipedia.org/w/index.php?title=Alexandrium_(genus)&oldid=636349973 |
Goniodomid dinoflagellate, rounded or angular body; cingulum median but displaced by one width on right ventral side; nucleus median and u-shaped; chloroplasts present; some species form chains; many species produce PSP toxins.
Distribution: Coastal temperate to tropical waters.
Cell Size: Less than 45um
Description: Armoured cells, typically spherical.