The copepod Tigriopus: A promising marine model organism for ecotoxicology and environmental genomics

Raisuddin, Sheikh; Kwok, Kevin W.H.; Leung, Kenneth M.Y.; Schlenk, Daniel; Lee, Jae‐Seong

doi:10.1016/j.aquatox.2007.04.005

Cited by 326 publications

(160 citation statements)

References 94 publications

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“…Females usually bear multiple broods of eggs after single mating and a typical brood size of 30-50 [21]. Under laboratory conditions, T. japonicus individuals developed from eggs will take at most 21 days to deposit their first egg brood [21].…”

Section: Copepod Lifecycle Testmentioning

confidence: 99%

Chronic Toxicity of Double-Walled Carbon Nanotubes to Three Marine Organisms: Influence of Different Dispersion Methods

et al. 2010

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Aim: Double-walled carbon nanotubes (DWNTs) are found in a variety of consumer products, but there are no ecotoxicity data of DWNTs into marine organisms. Materials & methods: Chronic toxicity of DWNTs was investigated with the diatom Thalassiosira pseudonana, copepod Tigriopus japonicus and medaka Oryzias melastigma. DWNTs were dispersed using sonication (so-DWNTs) and stirring (st-DWNTs) for comparison. Results: The median aggregation size (0.89 µm2) of so-DWNTs was smaller than that of st-DWNTs (21.8 µm2). Exposure to DWNTs led to growth inhibition of T. pseudonana with EC50s of 1.86 and 22.7 mg/l for so- and st-DWNTs, respectively. Population growth of T. japonicus was reduced to 0.1 mg/l for so-DWNTs and 10 mg/l for st-DWNTs. Growth inhibition in O. melastigma was observed at 10 mg/l for so-DWNTs but not for st-DWNTs. Conclusion: Given that so-DWNTs are consistently significantly more toxic than st-DWNTs, dispersion method and size of aggregations should be considered in DWNT toxicity testing.

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Section: Copepod Lifecycle Testmentioning

confidence: 99%

Chronic Toxicity of Double-Walled Carbon Nanotubes to Three Marine Organisms: Influence of Different Dispersion Methods

et al. 2010

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“…Tigriopus californicus may be used as a model for the future situations of other species that are not currently exposed to such a large range of temperatures. The large range of their habitat makes them the ideal model for studies environmental genomics [5].…”

Section: Introductionmentioning

confidence: 99%

Identifying the gene(s) that allow tigriopus californicus to survive under thermal stress

Chan

Pankey

Kelly

2014

Canadian Young Scientist Journal

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“…Many marine species such as polychaetes, copepods, mussels, clams, oysters, snails, fishes, etc. have been suggested to be ideal candidates [9][10][11][12]. However, due to the effect of pollution on the reproductive events of the species with external fertilization, it appears that a combination of ascidian characteristics with the impact of antifouling substances on reproductive mechanisms makes the ascidians a model for ecotoxicological studies for a variety of other xenobiotics.…”

Section: Editorialmentioning

confidence: 99%

Antifouling Compounds Endangering Marine Invertebrates Reproduction

Aless¹,

Gallo²,

Tosti³

2014

J Marine Sci Res Dev

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EditorialReproduction and embryo development of marine animals occur in the sea water and are processes very sensitive to substances present in the environment that come from industrial and agricultural activities. These compounds are collectively known as xenobiotics due to their extra-environmental origin. Among xenobiotics present in the sea water, a relevant role is played by the anti-fouling compounds. These are used to prevent settlement and growth of organisms on submerged structures of vessels and ships that otherwise should create serious problems of speed slow down.In the 60', chemical industries designed paints based on tin metallic compounds named organotines that included tributyltin (TBT) and triphenyltin (TPT). These biocides demonstrated to be very efficacious in impeding the attachment of marine organisms on the ships surface, however a serious toxic side effect exerted on the wild marine species has emerged during the last decades [1]. Numerous ecotoxicological studies clearly indicated that organotines are highly toxic for sea life since they persist in the water, being recycled from the sediments and entering the food chain. The interference with the endocrine system of marine invertebrates and vertebrates, even at low concentrations, may generate high risk of reproductive disorders up to threaten the survival of the species In particular, the exposure to TBT was clearly associated to the phenomenon of imposex, i.e. an irreversible induction of male sex characteristics on females marine snails [2]. For this reason, the International Maritime Organization Although not all the countries adhered to this ban, chemical industries have started to formulate new friendly antifouling compounds as possible alternatives to organotines. Among them, the organic booster biocides diuron (3-(3,4-dichlorophenyl)-1,1-dimethylurea) [4] and chlorothalonil are the most widely employed. Since their recent application and release in the environment, no many data are currently available on their toxicity and in particular on their impact on the main parameters and events of reproduction such as gametes physiology, fertilization, and early embryo development of marine species. Our group has performed a comparative investigation on the effects of TBT, diuron and chlorothalonil, as old and new generation antifouling biocides, and to do this it was chosen a very peculiar approach that is the study of the oocyte plasma membrane by looking at the ion currents underlying the reproductive events of the marine invertebrate Ciona intestinalis (ascidians).The use of this model is particularly challenging since ecotoxicological studies used for decades the sea urchin embryo survival to test environmental toxicity, but it was not considered to test also the basic process of fertilization.In our studies, surprisingly we discovered a common action of the three biocides in reducing the sodium currents of the virgin oocytes. This is an alarming view since, in the past, it was shown a clear role of these currents in driving a correct...

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The copepod Tigriopus: A promising marine model organism for ecotoxicology and environmental genomics

Cited by 326 publications

References 94 publications

Chronic Toxicity of Double-Walled Carbon Nanotubes to Three Marine Organisms: Influence of Different Dispersion Methods

Chronic Toxicity of Double-Walled Carbon Nanotubes to Three Marine Organisms: Influence of Different Dispersion Methods

Identifying the gene(s) that allow tigriopus californicus to survive under thermal stress

Antifouling Compounds Endangering Marine Invertebrates Reproduction

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