From: Charles Plessy Date: Tue, 28 Nov 2023 05:12:29 +0000 (+0900) Subject: Café X-Git-Url: https://source.charles.plessy.org/?a=commitdiff_plain;h=91fe739ce1f268e211763bf5fb0b62f0fb8fd8f0;p=source%2B%2B%2F.git Café --- diff --git a/biblio/37947122.mdwn b/biblio/37947122.mdwn new file mode 100644 index 00000000..7fafe168 --- /dev/null +++ b/biblio/37947122.mdwn @@ -0,0 +1,25 @@ +[[!meta title="The appendicularian Oikopleura dioica can enhance carbon export in a high CO2 ocean."]] +[[!tag Oikopleura]] + +Taucher J, Lechtenbörger AK, Bouquet JM, Spisla C, Boxhammer T, Minutolo F, Bach LT, Lohbeck KT, Sswat M, Dörner I, Ismar-Rebitz SMH, Thompson EM, Riebesell U. + +The appendicularian _Oikopleura dioica_ can enhance carbon export in a high CO2 ocean. + +Glob Chang Biol. 2023 Nov 10:e17020. doi: 10.1111/gcb.17020. + +[[!pmid 37947122 desc=" “pelagic mesocosms [...], each extending to a depth of +21 m (19 m cylindrical bag and 2 m full size/diameter conical sediment trap +attached to the bottom of the bag) and enclosing about 60 m3 of the natural +water column.” “Average pCO2 during the experiment ranged between ~320 +(“ambient”) and 1700 μatm (“high CO2,” corresponding to a drop in pH by +0.57 units compared to ambient conditions).” “a custom-built net (50 μm mesh +size; 20 cm in diameter) with a modified, non-filtering cod end (3.8 L clear +polycarbonate beaker) and reduced towing speeds (0.15 m s−1) was applied in +order to collect alive and undamaged O. dioica specimen.” “The peak biomass of +O. dioica was approximately twice as high in the high CO2 mesocosms (2.5 vs. +1.3 μgC L−1) and occurred earlier (days 13–17) than under ambient conditions +(day 21)”. “female O. dioica were cultured in mesocosm water (pre-filtered +through a 50-μm mesh) of the respective CO2 conditions until they achieved +maturity and produced eggs.” “The fecundity of O. dioica was significantly +elevated under lower pH, with females producing 278 (±107) eggs under ambient +and 334 (±14) eggs in the OA treatment“"]] diff --git a/tags/Oikopleura.mdwn b/tags/Oikopleura.mdwn index ea44efba..d95bb1a3 100644 --- a/tags/Oikopleura.mdwn +++ b/tags/Oikopleura.mdwn @@ -390,9 +390,11 @@ Development 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]). + okadaic acid ([[Matsuo and coll., 2020|biblio/31857067]]). - Colchicine treatment induced early differenciation of the oocytes ([[Ganot, Kallesøe, Thompson (2007)|biblio/17123503]]). + - In mesocosms under high-CO2 (low-pH) conditions, femals produce more eggs + (278 ±11 vs 334 ±14), Taucher and coll. ([[2023|biblio/37947122]]). ### Fertilization and early stages