From: Charles Plessy Date: Wed, 15 Nov 2023 00:44:55 +0000 (+0900) Subject: cocorrico X-Git-Url: https://source.charles.plessy.org/?a=commitdiff_plain;h=5dde7adf1992eab80e89029cf1d08711b01a5810;p=setup%2F.git cocorrico --- diff --git a/biblio/1571417125678584576.mdwn b/biblio/1571417125678584576.mdwn new file mode 100644 index 00000000..5c630a82 --- /dev/null +++ b/biblio/1571417125678584576.mdwn @@ -0,0 +1,14 @@ +[[!meta title="Cycle vital d'un Appendiculaire Oikopleura dioica Fol, 1872 : description et chronologie"]] +[[!tag Oikopleura]] + +Robert Fenaux + +Cycle vital d'un Appendiculaire _Oikopleura dioica_ Fol, 1872 : description et chronologie + +Ann. Inst. Oceanogr. Paris (1976) 52, 89-101 https://cir.nii.ac.jp/crid/1571417125678584576 + +[[!url https://cir.nii.ac.jp/crid/1571417125678584576 desc="High sperm +concentration leads to polyspermia, aborted cell divisions, and early +developmental arrest. Egg diameter between 97 and 107 µm. The trunk / tail +length ratio varies with age and can be matched with a Bertalanffy model. Fed +with _Nannochloris occulata_."]] diff --git a/tags/Oikopleura.mdwn b/tags/Oikopleura.mdwn index eea3da10..6c4d1336 100644 --- a/tags/Oikopleura.mdwn +++ b/tags/Oikopleura.mdwn @@ -367,6 +367,8 @@ Tools Development ----------- +### Gametes + - The oocytes originate from a specialised syncitium, the coenocyst, in which nurse cells and oocytes are connected by cytoplasmic bridges, the ring channels ([[Ganot and coll., 2007|biblio/17126826]]). @@ -378,18 +380,34 @@ Development - Inhibition of the MAPK pathway cause some nurse cell nuclei to enter the oocyte through the ring channels ([[Ganot, Moosmann-Schulmeister and Thompson, 2008|biblio/18845138]]). + - Egg diameter in females from (probably) Villefranche-sur-mer: 97 to 107 µm + ([[Fenaux, 1976|biblio/1571417125678584576]]). + - Increased food abundance increases egg number but does not change diameter nor + generation time ([[Troedsson and coll., 2002|biblio/10.3354_meps243083]]). + Food reduction before day 4 causes growth arrest (GA), in which all cell cycles + eventually pause. Animals in GA can survive ~18 days at 15°C. GA can also be + induced by inhibiting the TOR pathway ([[Subramaniam, Campsteijn and Thompson, + 2014|biblio/24695788]]). + - Meiosis is resumed by change of extracellular pH when the oocytes are released + in seawater. Partenogenesis starts if PP2A is inhibited by DNAi or with + okadaic acid ([[Matsuo and coll., 2020|biblio/31857067]). + - Colchicine treatment induced early differenciation of the oocytes + ([[Ganot, Kallesøe, Thompson (2007)|biblio/17123503]]). + +### Fertilization and early stages + - The sperm's mitochondrion enters the oocyte together with the nucleus ([[Holland, Gorsky and Fenaux, 1988|biblio/10.1007_BF00312223]]). - The first and second polar bodies are visible 5 and 15 min after fertilisation, respectively ([[Nishino and Morisawa, 1998|biblio/10.2108_zsj.15.723]]). - - Meiosis is resumed by change of extracellular pH when the oocytes are released - in seawater. Partenogenesis starts if PP2A is inhibited by DNAi or with - okadaic acid ([[Matsuo and coll., 2020|biblio/31857067]). - First embryonic cleavages are deterministic and “Clonal organization of the tissues is essentially invariant among individuals” ([[Stach and coll., 2008|biblio/18490654]]). - - Colchicine treatment induced early differenciation of the oocytes - ([[Ganot, Kallesøe, Thompson (2007)|biblio/17123503]]). + - Fertilization in high sperm concentration leads to polyspermia + ([[Fenaux, 1976|biblio/1571417125678584576]]). + +### Other + - Generation times shortens when temperature rises. First spawnings are seen on day 6 at 14.2 °C, and on day 8 at 17.2 °C ([[Bouquet and coll., 2018|biblio/29298334]]). Reported generation times in the litterature: 149 ± 2 @@ -402,12 +420,6 @@ Development 1995|biblio/10.1016_0022-0981_95_00004-B]]). Tôkyô bay _O. dioica_ under laboratory condiditons: 6 days at 15°C, 4 days at 20°C and 3 days at 25°C ([[Sato, Tanaka and Ishimaru, 2001|biblio/10.1093_plankt_23.4.415]]). - - Increased food abundance increases egg number but does not change diameter nor - generation time ([[Troedsson and coll., 2002|biblio/10.3354_meps243083]]). - Food reduction before day 4 causes growth arrest (GA), in which all cell cycles - eventually pause. Animals in GA can survive ~18 days at 15°C. GA can also be - induced by inhibiting the TOR pathway ([[Subramaniam, Campsteijn and Thompson, - 2014|biblio/24695788]]). - Large animals (~5 mm body length) could be cultivated when provided with large amounts of food ([[Li and Zhang, 2021|biblio/10.1007_s00343-020-0071-0]]). - Telomeres are localised at the nuclear envelope and do not overlap with nuclear @@ -746,6 +758,9 @@ Culture protocols (incomplete list): Food tested in laboratory (totally incomplete list): + - [[Fenaux 1976|biblio/1571417125678584576]] reported the use of [_Nanochloropsis oceanica_][] + (under the name _Nanochloris occulata_) (2 to 3 µm according to Wikipedia). + - Flagellates [_Isochrysis galbana_][] (4 µm width) and _Monochrysis lutheri_ (4 µm width), and the diatom _Cyclotella nana_ (Thalassiosira pseudonana) which had a width of 5 µm ([[G.-A. Paffenhöfer, 1973|biblio/10.1007_BF00391782]]). @@ -776,5 +791,6 @@ Food tested in laboratory (totally incomplete list): [_Rhinomonas reticulata_]: https://en.wikipedia.org/wiki/Rhinomonas [_Synechococcus sp._]: https://en.wikipedia.org/wiki/Synechococcus [_Tetraselmis suecica_]: https://en.wikipedia.org/wiki/Tetraselmis_suecica +[_Nanochloropsis oceanica_]: https://en.wikipedia.org/wiki/Nannochloropsis [[!inline pages="tagged(Oikopleura)" actions="no" limit=0]]