The invasive ctenophore Mnemiopsis leidyi, which comes from North America’s east coast, was observed in Danish waters for the first time in 2007. Since then, the new invader has every summer spread in Danish and adja...The invasive ctenophore Mnemiopsis leidyi, which comes from North America’s east coast, was observed in Danish waters for the first time in 2007. Since then, the new invader has every summer spread in Danish and adjacent waters (i.e. North Sea, Limfjorden, Skagerrak, Kattegat, Belt Sea, Baltic Sea). The invasive comb jelly has apparently come to stay, as it has no effective enemies. Possible harmful effects of M. leidyi which feeds voraciously on zooplankton, fish eggs and larvae, have so far not been thoroughly studied in Danish waters, although dedicated attempts have been made in Limfjorden and in the central Baltic Sea. Over the last 10 years, the Danish national environmental monitoring program did not include gelatinous zooplankton, but new initiatives have been recently taken. A brief overview of our current knowledge on the impact of M. leidyi in Danish waters is given here.展开更多
The production of plastics has exponentially increased over time such that the observation of microplastics in the oceans has become a major concern given how frequently these particles and marine biota may interact.M...The production of plastics has exponentially increased over time such that the observation of microplastics in the oceans has become a major concern given how frequently these particles and marine biota may interact.Microplastics can be ingested by diverse species,including invertebrates,which can lead to physical damage due to their small size and potentially chemical damage related to the ingestion of monomers,polymeric additives,or adsorbed chemicals.This study reports on the first evidence of microplastics in Mnemiopsis leidyi.Microplastics were described by type,quantified,and had their chemical composition identified.In total,328 samples of microplastic(MP)candidates were observed:blue fibers were the most abundant,followed by black,red,and green fibers as well as blue fragments.Three types of microplastics were chemically identified as polyurethane,unplasticized polyvinylchloride,and polyethylene polylauryllactam.Overall,this study demonstrated that Mnemiopsis leidyi have the capacity to incorporate microplastics.Although more studies are needed,Mnemiopsis leidyi is relatively abundant on the Atlantic coast and should be recommended for use as a bioindicator for microplastics.展开更多
基金financially supported by a grant from the Danish Council for Independent Research,Natural Sciences(Grant Number:DFF-4002-00494).
文摘The invasive ctenophore Mnemiopsis leidyi, which comes from North America’s east coast, was observed in Danish waters for the first time in 2007. Since then, the new invader has every summer spread in Danish and adjacent waters (i.e. North Sea, Limfjorden, Skagerrak, Kattegat, Belt Sea, Baltic Sea). The invasive comb jelly has apparently come to stay, as it has no effective enemies. Possible harmful effects of M. leidyi which feeds voraciously on zooplankton, fish eggs and larvae, have so far not been thoroughly studied in Danish waters, although dedicated attempts have been made in Limfjorden and in the central Baltic Sea. Over the last 10 years, the Danish national environmental monitoring program did not include gelatinous zooplankton, but new initiatives have been recently taken. A brief overview of our current knowledge on the impact of M. leidyi in Danish waters is given here.
基金supported by FAPES/VALE/FAPERJ[grant number 01/2015].
文摘The production of plastics has exponentially increased over time such that the observation of microplastics in the oceans has become a major concern given how frequently these particles and marine biota may interact.Microplastics can be ingested by diverse species,including invertebrates,which can lead to physical damage due to their small size and potentially chemical damage related to the ingestion of monomers,polymeric additives,or adsorbed chemicals.This study reports on the first evidence of microplastics in Mnemiopsis leidyi.Microplastics were described by type,quantified,and had their chemical composition identified.In total,328 samples of microplastic(MP)candidates were observed:blue fibers were the most abundant,followed by black,red,and green fibers as well as blue fragments.Three types of microplastics were chemically identified as polyurethane,unplasticized polyvinylchloride,and polyethylene polylauryllactam.Overall,this study demonstrated that Mnemiopsis leidyi have the capacity to incorporate microplastics.Although more studies are needed,Mnemiopsis leidyi is relatively abundant on the Atlantic coast and should be recommended for use as a bioindicator for microplastics.
