Microplastics are love-killers for Pacific oysters!

Micro-team (Ifremer, Lemar-CNRS)

Microplastics are love-killers for Pacific oysters!

Micro-team (Ifremer, Lemar-CNRS)

Onderzoeksoutput: Bijdrage aan congres › Poster

Uittreksel

The effects of long-term exposure to microplastics on the reproductive characteristics of the Pacific oyster (Crassostrea gigas) were studied. During their gametogenesis, oysters were exposed or not (control), for two month, to polystyrene beads (diameter 2 and 6 μm, concentration:1800 and 200 ml-1 respectively). During the reproductive period, gamete characteristics were
assessed by studying oocyte quantity and quality (flow cytometry, D-larval yield) and sperm biological features (image analysis and flow cytometry).
A significantly lower number of oocytes (38%) was collected after gonad stripping in microplastic exposed oysters as compared to control ones. Oocyte relative size of oysters exposed to microplastics was significantly lower (8%) than values observed for control. On the other hand, no significant differences were recorded between the two oyster groups for oocyte ROS production
and viability. For sperm, no significant differences were observed between the two oyster groups for the following parameters: sperm viability and morphology, mitochondrial membrane potential, ROS production and the percentage of motile spermatozoa. However, sperm movement speed from oysters exposed to microplastics was 23% lower than that from control oysters.
Furthermore, the D-larval yield estimated 48h post fertilization, decreased by 41% for larvae produced from female oysters exposed to microplastics as compared to control ones.
In the present study, we demonstrated that the exposure of ripening oysters to microplastic particles reduced their fecundity, gamete quality and fertilization success.

Taal	Engels
Status	Gepubliceerd - 13-jan-2014
Evenement	Fate and impact of microplastics in marine ecosystems - Plouzané, Frankrijk Duur: 13-jan-2014 → 15-jan-2014 http://micro2014.sciencesconf.org

Workshop

Workshop	Fate and impact of microplastics in marine ecosystems
Land	Frankrijk
Stad	Plouzané
Periode	13/01/14 → 15/01/14
Internet adres	http://micro2014.sciencesconf.org

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Dit citeren

@conference{e9ea201beec54e869cdfd879fd5a7215,

title = "Microplastics are love-killers for Pacific oysters!",

abstract = "The effects of long-term exposure to microplastics on the reproductive characteristics of the Pacific oyster (Crassostrea gigas) were studied. During their gametogenesis, oysters were exposed or not (control), for two month, to polystyrene beads (diameter 2 and 6 μm, concentration:1800 and 200 ml-1 respectively). During the reproductive period, gamete characteristics wereassessed by studying oocyte quantity and quality (flow cytometry, D-larval yield) and sperm biological features (image analysis and flow cytometry).A significantly lower number of oocytes (38{\%}) was collected after gonad stripping in microplastic exposed oysters as compared to control ones. Oocyte relative size of oysters exposed to microplastics was significantly lower (8{\%}) than values observed for control. On the other hand, no significant differences were recorded between the two oyster groups for oocyte ROS productionand viability. For sperm, no significant differences were observed between the two oyster groups for the following parameters: sperm viability and morphology, mitochondrial membrane potential, ROS production and the percentage of motile spermatozoa. However, sperm movement speed from oysters exposed to microplastics was 23{\%} lower than that from control oysters.Furthermore, the D-larval yield estimated 48h post fertilization, decreased by 41{\%} for larvae produced from female oysters exposed to microplastics as compared to control ones. In the present study, we demonstrated that the exposure of ripening oysters to microplastic particles reduced their fecundity, gamete quality and fertilization success.",

author = "Marc Suquet and Johan Robbens and {Micro-team (Ifremer, Lemar-CNRS)}",

year = "2014",

month = "1",

day = "13",

language = "English",

note = "null ; Conference date: 13-01-2014 Through 15-01-2014",

url = "http://micro2014.sciencesconf.org",

}

TY - CONF

T1 - Microplastics are love-killers for Pacific oysters!

AU - Suquet, Marc

AU - Robbens, Johan

AU - Micro-team (Ifremer, Lemar-CNRS)

PY - 2014/1/13

Y1 - 2014/1/13

N2 - The effects of long-term exposure to microplastics on the reproductive characteristics of the Pacific oyster (Crassostrea gigas) were studied. During their gametogenesis, oysters were exposed or not (control), for two month, to polystyrene beads (diameter 2 and 6 μm, concentration:1800 and 200 ml-1 respectively). During the reproductive period, gamete characteristics wereassessed by studying oocyte quantity and quality (flow cytometry, D-larval yield) and sperm biological features (image analysis and flow cytometry).A significantly lower number of oocytes (38%) was collected after gonad stripping in microplastic exposed oysters as compared to control ones. Oocyte relative size of oysters exposed to microplastics was significantly lower (8%) than values observed for control. On the other hand, no significant differences were recorded between the two oyster groups for oocyte ROS productionand viability. For sperm, no significant differences were observed between the two oyster groups for the following parameters: sperm viability and morphology, mitochondrial membrane potential, ROS production and the percentage of motile spermatozoa. However, sperm movement speed from oysters exposed to microplastics was 23% lower than that from control oysters.Furthermore, the D-larval yield estimated 48h post fertilization, decreased by 41% for larvae produced from female oysters exposed to microplastics as compared to control ones. In the present study, we demonstrated that the exposure of ripening oysters to microplastic particles reduced their fecundity, gamete quality and fertilization success.

AB - The effects of long-term exposure to microplastics on the reproductive characteristics of the Pacific oyster (Crassostrea gigas) were studied. During their gametogenesis, oysters were exposed or not (control), for two month, to polystyrene beads (diameter 2 and 6 μm, concentration:1800 and 200 ml-1 respectively). During the reproductive period, gamete characteristics wereassessed by studying oocyte quantity and quality (flow cytometry, D-larval yield) and sperm biological features (image analysis and flow cytometry).A significantly lower number of oocytes (38%) was collected after gonad stripping in microplastic exposed oysters as compared to control ones. Oocyte relative size of oysters exposed to microplastics was significantly lower (8%) than values observed for control. On the other hand, no significant differences were recorded between the two oyster groups for oocyte ROS productionand viability. For sperm, no significant differences were observed between the two oyster groups for the following parameters: sperm viability and morphology, mitochondrial membrane potential, ROS production and the percentage of motile spermatozoa. However, sperm movement speed from oysters exposed to microplastics was 23% lower than that from control oysters.Furthermore, the D-larval yield estimated 48h post fertilization, decreased by 41% for larvae produced from female oysters exposed to microplastics as compared to control ones. In the present study, we demonstrated that the exposure of ripening oysters to microplastic particles reduced their fecundity, gamete quality and fertilization success.

M3 - Poster

ER -