coenocyst

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+[[!meta title="The Oikopleura coenocyst, a unique chordate germ cell permitting rapid, extensive modulation of oocyte production."]]
+[[!tag Oikopleura]]
+
+Ganot P, Bouquet JM, Kallesøe T, Thompson EM.
+
+Dev Biol. 2007 Feb 15;302(2):591-600 doi:10.1016/j.ydbio.2006.10.021
+
+The Oikopleura coenocyst, a unique chordate germ cell permitting rapid, extensive modulation of oocyte production.
+
+[[!pmid 17126826 desc="The coenocyst is a syncytium containing nurse nuclei and meiotic nuclei surrounded by their cytoplasms and connected by ring channels.  Figure 1p of spawned oocytes in cortical metaphase I shows 3 DNA masses.  Germline-specific expression of Vasa."]]

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@@ -285,11 +285,16 @@ Tools
 Development
 -----------
 
+ - 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|17126826]]).
  - 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]]).
  - 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]]).
  - 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
@@ -303,8 +308,6 @@ Development
    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]]).
- - Colchicine treatment induced early differenciation of the oocytes
-   ([[Ganot, Kallesøe, Thompson (2007)|biblio/17123503]]).
  - Telomeres are localised at the nuclear envelope and do not overlap with nuclear
    pore complexes in early meiotic oocytes before H3S10 phosphorylation.  In nurse
    cells at a later stage of oocyte development, the telomeres localise in silent