We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Distribution of trace element concentrations in invertebrate species collected from Tokyo Bay, Japan
AI summary Read the abstract
This study measured concentrations of 34 trace elements in six invertebrate species from Tokyo Bay, finding that accumulation patterns differ between bivalves and crustaceans and across species. Understanding how marine invertebrates concentrate metals is important for assessing contamination risks to ecosystems and seafood consumers.
Three bivalves, Cyclina sinensis (n=6), Crassostrea gigas (n=7), and Mactra veneriformis (n=6), and three crustaceans, Hemigrapsus penicillatus (n=5), Macrophthalmus japonicus (n=5), and Pyrhila pisum (n=5), were collected at Haneda in June 2019. In July 2019, M. veneriformis (n=5) and M. japonicus (n=3) were collected at Kasai. Concentrations of 34 trace elements were analyzed in muscles and internal organs: Li, Na, Mg, Al, K, Ca, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, As, Se, Rb, Sr, Y, Mo, Cd, In, Sn, Sb, Cs, Ba, La, Ce, Gd, Pt, Tl, Pb, and Bi. C. sinensis and M. veneriformis accumulate elements higher in internal organs than muscles. But C. gigas indicates a different accumulation from other bivalves. The strength of hypoxia tolerance may be related to the difference in element distribution among the tissues because C. gigas is exposed to air at low tide, but the other bivalves are not. Moreover, C. sinensis and M. veneriformis accumulated the elements abundant in sediment such as rare earth elements. However, C. gigas accumulated different elements from other bivalves: Cu, Zn, Cd, and Pb. The effect of habitat, in or above the sediment, seemed related to the accumulated element composition. While crustaceans accumulated elements higher in the hepatopancreas than in muscles. In crustaceans, detritus-eating or carnivorous feeding may have affected the accumulated element composition. Most elements, except Mg, K, Ca, and Sr, in the hepatopancreas of H. penicillatus and M. japonicus had higher concentrations than in P. pisum. The detritus-eating in crustaceans was likely to result in accumulating elements with microplastics as one of their origins, e.g., Al, Mn, Co, Cu, Ba, and Pb. Moreover, all invertebrates in Haneda accumulated higher concentrations of Zn than in other studies—likely due to industrial wastes and tires disposed of in Haneda. Additionally, most high-toxicity element concentrations in Kasai were at similar or higher levels than in Haneda. Thallium was only detected in Kasai and was higher than in other studies. Thus, different trace element distributions were suggested among sites in Tokyo Bay.
More Papers Like This
Assessment of trace element contamination derived from coastal plastic debris using gastropods, bivalves, and decapod crustaceans on Zamami-jima Island, the Ryukyu Islands: Spatial, temporal, and species-specific variation
AI summary Read the abstract
Researchers assessed trace element contamination from coastal plastic debris by analyzing four invertebrate species on Zamami-jima Island in the Ryukyu Islands. They found spatial and species-specific variation in trace element concentrations, with plastic-polluted sites showing elevated levels of certain metals. The study indicates that plastic debris in coastal environments can serve as a vector for delivering trace element contaminants into marine food webs.
An Analysis of Major and Trace Element Pollution Caused by Plastic Litter Using Atactodea striata (Gmelin, 1791) in Yonaguni Island, Okinawa
AI summary Read the abstract
This study compared trace element concentrations in the bivalve Atactodea striata collected from a plastic-littered beach and a relatively clean beach in Yonaguni Island, Okinawa. Higher levels of aluminum, nickel, zinc, and lead were found at the plastic-polluted site, suggesting plastic litter contributes to heavy metal contamination.
Bioaccumulation of microplastics and its in vivo interactions with trace metals in edible oysters
AI summary Read the abstract
Scientists collected oysters from a Chinese coastal city and found microplastics in all samples, then investigated how microplastics interact with trace metals in vivo, finding that plastic particles and metals co-accumulated in tissues and that plastics may alter metal bioavailability.
Microplastic volumes in Tokyo Bay
AI summary Read the abstract
Researchers quantified microplastic volumes across multiple sites in Tokyo Bay, Japan, finding spatial variation linked to urban runoff and river inputs, with surface waters and sediments showing distinct accumulation patterns.
Enrichment Characteristics of Microplastics and Heavy Metals Accumulated in Bivalves in South Yellow Sea
AI summary Read the abstract
Researchers analyzed three species of bivalves from the South Yellow Sea and found microplastics in all of them, averaging about nine particles per individual. The most common types were transparent fibers made of polyamide, and while heavy metals like zinc were also present, there was no clear statistical link between microplastic and heavy metal concentrations in the animals.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.