Oceanic protists with different forms of acquired phototrophy display contrasting biogeographies and abundance
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Oceanic protists with different forms of acquired phototrophy display contrasting biogeographies and abundance. / Leles, Suzanne; Mitra, Aditee; Flynn, Kevin J.; Stoecker, Diane K.; Hansen, Per Juel; Calbet, Albert; McManus, George B.; Sanders, Robert W.; Caron, David A.; Not, Fabrice; Hallegraeff, Gustaff M.; Pitta, Paraskevi ; Raven, John A.; Johnson, Matthew D.; Glibert, Patricia M.; Våge, Selina.
In: Proceedings of the Royal Society B: Biological Sciences, Vol. 284, No. 1860, 20170664, 16.08.2017.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Oceanic protists with different forms of acquired phototrophy display contrasting biogeographies and abundance
AU - Leles, Suzanne
AU - Mitra, Aditee
AU - Flynn, Kevin J.
AU - Stoecker, Diane K.
AU - Hansen, Per Juel
AU - Calbet, Albert
AU - McManus, George B.
AU - Sanders, Robert W.
AU - Caron, David A.
AU - Not, Fabrice
AU - Hallegraeff, Gustaff M.
AU - Pitta, Paraskevi
AU - Raven, John A.
AU - Johnson, Matthew D.
AU - Glibert, Patricia M.
AU - Våge, Selina
PY - 2017/8/16
Y1 - 2017/8/16
N2 - This first comprehensive analysis of the global biogeography of marine protistan plankton with acquired phototrophy shows these mixotrophic organisms to be ubiquitous and abundant; however, their biogeography differs markedly between different functional groups. These mixotrophs, lacking a constitutive capacity for photosynthesis (i.e. non-constitutive mixotrophs, NCMs), acquiretheir phototrophic potential through either integration of prey-plastids or through endosymbiotic associations with photosynthetic microbes. Analysis of field data reveals that 40–60% of plankton traditionally labelled as (nonphototrophic) microzooplankton are actually NCMs, employing acquiredphototrophy in addition to phagotrophy. Specialist NCMs acquire chloroplasts or endosymbionts from specific prey, while generalist NCMs obtain chloroplasts from a variety of prey. These contrasting functional types of NCMs exhibit distinct seasonal and spatial global distribution patterns. Mixotrophs reliant on ‘stolen’ chloroplasts, controlled by prey diversity and abundance, dominate in high-biomass areas. Mixotrophs harbouring intactsymbionts are present in all waters and dominate particularly in oligotrophic open ocean systems. The contrasting temporal and spatial patterns of distribution of different mixotroph functional types across the oceanic provinces, as revealed in this study, challenges traditional interpretations of marine food web structures. Mixotrophs with acquired phototrophy (NCMs) warrantgreater recognition in marine research.
AB - This first comprehensive analysis of the global biogeography of marine protistan plankton with acquired phototrophy shows these mixotrophic organisms to be ubiquitous and abundant; however, their biogeography differs markedly between different functional groups. These mixotrophs, lacking a constitutive capacity for photosynthesis (i.e. non-constitutive mixotrophs, NCMs), acquiretheir phototrophic potential through either integration of prey-plastids or through endosymbiotic associations with photosynthetic microbes. Analysis of field data reveals that 40–60% of plankton traditionally labelled as (nonphototrophic) microzooplankton are actually NCMs, employing acquiredphototrophy in addition to phagotrophy. Specialist NCMs acquire chloroplasts or endosymbionts from specific prey, while generalist NCMs obtain chloroplasts from a variety of prey. These contrasting functional types of NCMs exhibit distinct seasonal and spatial global distribution patterns. Mixotrophs reliant on ‘stolen’ chloroplasts, controlled by prey diversity and abundance, dominate in high-biomass areas. Mixotrophs harbouring intactsymbionts are present in all waters and dominate particularly in oligotrophic open ocean systems. The contrasting temporal and spatial patterns of distribution of different mixotroph functional types across the oceanic provinces, as revealed in this study, challenges traditional interpretations of marine food web structures. Mixotrophs with acquired phototrophy (NCMs) warrantgreater recognition in marine research.
U2 - 10.1098/rspb.2017.0664
DO - 10.1098/rspb.2017.0664
M3 - Journal article
C2 - 28768886
VL - 284
JO - Proceedings of the Royal Society B: Biological Sciences
JF - Proceedings of the Royal Society B: Biological Sciences
SN - 0962-8452
IS - 1860
M1 - 20170664
ER -
ID: 180045433