You are here
Species
Ciona
IUCN
NCBI
EOL Text
Genomic DNA is available from 2 specimens with morphological vouchers housed at British Antarctic Survey
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | Text can be freely copied and altered, as long as original author and source are properly acknowledged. |
Source | http://www.oglf.org/catalog/details.php?id=T00235 |
Ciona is a genus of Cionidae sea squirts.
The body of Ciona is bag-like and covered by a tunic, which is a secretion of the epidermal cells. The body is attached at a permanent base located at the posterior part, and the opposite bears two openings, the buccal (oral) and atrial (cloacal) siphons. The water is drawn into the ascidian through the buccal siphon and leaves the atrium through the atrial siphon.
Genome projects[edit]
As of 2008, the genomes of Ciona intestinalis and Ciona savignyi have been sequenced.
Sexual reproduction[edit]
C. intestinalis is a hermaphrodite that releases sperm and eggs almost simultaneously into the surrounding seawater. C. intestinalis is self-sterile and thus has been used for studies on the mechanism of self-incompatibility.[1]C. savigny is highly self-fertile, but non-self sperm out-compete self-sperm in fertilization competition assays.[2] Mechanisms promoting non-self fertilization may have evolved to avoid inbreeding depression,[2] and to facilitate outcrossing which allows the masking of deleterious recessive mutations.[3]
References[edit]
- ^ Sawada H, Morita M, Iwano M (August 2014). "Self/non-self recognition mechanisms in sexual reproduction: new insight into the self-incompatibility system shared by flowering plants and hermaphroditic animals". Biochem. Biophys. Res. Commun. 450 (3): 1142–8. doi:10.1016/j.bbrc.2014.05.099. PMID 24878524.
- ^ a b Jiang D, Smith WC (October 2005). "Self- and cross-fertilization in the solitary ascidian Ciona savignyi". Biol. Bull. 209 (2): 107–12. doi:10.2307/3593128. PMID 16260770.
- ^ Bernstein H, Byerly HC, Hopf FA, Michod RE (September 1985). "Genetic damage, mutation, and the evolution of sex". Science 229 (4719): 1277–81. doi:10.1126/science.3898363. PMID 3898363.
License | http://creativecommons.org/licenses/by-sa/3.0/ |
Rights holder/Author | Wikipedia |
Source | http://en.wikipedia.org/w/index.php?title=Ciona&oldid=653042228 |
Depth range based on 641 specimens in 11 taxa.
Water temperature and chemistry ranges based on 80 samples.
Environmental ranges
Depth range (m): 0 - 4327
Temperature range (°C): -0.839 - 16.315
Nitrate (umol/L): 0.326 - 34.029
Salinity (PPS): 18.622 - 38.444
Oxygen (ml/l): 3.475 - 9.002
Phosphate (umol/l): 0.095 - 2.241
Silicate (umol/l): 0.987 - 91.590
Graphical representation
Depth range (m): 0 - 4327
Temperature range (°C): -0.839 - 16.315
Nitrate (umol/L): 0.326 - 34.029
Salinity (PPS): 18.622 - 38.444
Oxygen (ml/l): 3.475 - 9.002
Phosphate (umol/l): 0.095 - 2.241
Silicate (umol/l): 0.987 - 91.590
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=422752 |
Barcode of Life Data Systems (BOLD) Stats
Specimen Records:272
Specimens with Sequences:262
Specimens with Barcodes:257
Species:8
Species With Barcodes:8
Public Records:255
Public Species:8
Public BINs:5