FN Archimer Export Format
PT J
TI Better off alone? Compared performance of monoclonal and polyclonal stands of a cultivated red alga growth
BT 
AF Usandizaga, Sara
   Buschmann, Alejandro H.
   Camus, Carolina
   Kappes, José Luis
   ARNAUD-HAOND, Sophie
   Mauger, Stéphane
   Valero, Myriam
   Guillemin, Marie Laure
AS 1:1;2:2;3:2;4:2;5:3;6:4,6;7:5,6;8:5,6;
FF 1:;2:;3:;4:;5:PDG-REM-EEP;6:;7:;8:;
C1 Programa de Doctorado en Ciencias, mención Conservación y Manejo de Recursos Naturales Centro i~mar and CeBiB Universidad de Los Lagos Puerto Montt ,Chile
   Centro i~mar and CeBiB Universidad de Los Lagos Puerto Montt ,Chile
   Laboratoire Environnement Profond‐Centre de Brest IFREMER Plouzané, France
   CNRS Sorbonne Université UMI 3614 Evolutionary Biology and Ecology of Algae Universidad Austral de Chile, Roscoff, France
   CNRS Sorbonne Université UMI 3614 Evolutionary Biology and Ecology of Algae Pontificia Universidad Católica de Chile Universidad Austral de Chile, Roscoff, France
   Facultad de Ciencias Centro FONDAP de Investigación en Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL) Instituto de Ciencias Ambientales y Evolutivas Universidad Austral de Chile Valdivia ,Chile
C2 UNIV LOS LAGOS, CHILE
   UNIV LOS LAGOS, CHILE
   IFREMER, FRANCE
   CNRS, FRANCE
   CNRS, FRANCE
   UNIV AUSTRAL CHILE, CHILE
SI BREST
SE PDG-REM-EEP
IN WOS Ifremer UPR
   DOAJ
   copubli-france
   copubli-int-hors-europe
IF 5.183
TC 4
UR https://archimer.ifremer.fr/doc/00605/71727/70197.pdf
   https://archimer.ifremer.fr/doc/00605/71727/70198.jpg
   https://archimer.ifremer.fr/doc/00605/71727/70199.pdf
LA English
DT Article
DE ;domestication;general-purpose genotypes;genotypic diversity;productivity;seaweed
AB The objective of this study was to test, using a field experiment, the effect of genotypic diversity on productivity of farmed populations (Ancud and Chaica, Chile) of the domesticated red alga Agarophyton chilense (formerly known as Gracilaria chilensis), a species considered as economically important in Chile. Monoclonal and polyclonal (4 and 8 genotypes) subplots were outplanted into the mid intertidal in Metri Bay (Puerto Montt, Chile) during summer, a season in which A. chilense face higher temperatures (>18°C) and low nitrogen availability (<4.00 μmol). Ancud farm genotypes show higher growth rates in the monoclonal rather than the two polyclonal subplots. A similar tendency, yet not significant, was discernible in Chaica. In addition, whatever the population of origin of the thalli, no effect of genotypic diversity was detected neither on the agar yield and its quality, nor on the epiphyte load. Such unexpected results of a higher performance in plots with a lower genotypic diversity could be explained (a) by human‐assisted selection for dominant‐best‐performing genotypes that could counterbalance the negative effect caused by the low genotypic diversity in farms and (b) by the fact that the organisms inhabiting the algal mats do not impact the fitness of their host. Overall, the results obtained here suggest that despite farm induced selection lead to impoverished pools of genotypes, they may also have a positive effect of on the resistance of farmed populations to seasonal stressors. However, whether this may have a secondary negative effect on the longer term in a fluctuating environment remains to be determined, but may be avoided by adopting strategy of selection favoring different genotypes in space and time, as implemented in forestry. 
PY 2020
PD MAY
SO Evolutionary Applications
SN 1752-4571
PU Wiley
VL 13
IS 5
UT 000508441900001
BP 905
EP 917
DI 10.1111/eva.12908
ID 71727
ER

EF