Effects of petrogenic pollutants on North Atlantic and Arctic Calanus copepods: From molecular mechanisms to population impacts

Hansen, Bjørn Henrik; Tarrant, Ann M.; Lenz, Petra H.; Roncalli, Vittoria; Almeda, Rodrigo; Broch, Ole Jacob; Altin, Dag; Tollefsen, Knut Erik

doi:10.1016/j.aquatox.2023.106825

Cited by 3 publications

(1 citation statement)

References 208 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…brine shrimps, where blockage of the enzymes DHFR and TYMS resulted in larval teratogenesis and abnormal embryonic development [11]. More recently, altered expression of genes involved in the folate and methionine cycles has been associated with Thus, the aim of the present study was to characterize the enzymes involved in the 1C metabolism in the congener calanoid copepod C. finmarchicus, one of the most abundant calanoid copepods in the North Atlantic, representing a key grazer of phytoplankton and key prey for commercially important forage fish and shellfish, and for several critically endangered marine mammals in the Gulf of Maine [13,14]. In recent decades, the availability of high-quality molecular resources (e.g., mitochondrial genomes and transcriptomes) for this copepod has enabled the characterization of genes involved in key processes such as diapause, oogenesis, lipid metabolism, and detoxification pathways [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 97%

Folate-Mediated One-Carbon Metabolism in the Crustacean Copepod Calanus finmarchicus: Identification of Transcripts and Relative Expression across Development

Ascione,

Carotenuto,

Lauritano

et al. 2024

JMSE

Self Cite

View full text Add to dashboard Cite

Folate, also known as vitamin B9, plays a crucial role in the one-carbon (1C) metabolism, a conserved pathway from microbes to humans. The 1C metabolism, consisting of the folate and methionine cycles, is essential in many biological processes such as nucleotide and protein biosynthesis, cell proliferation, and embryonic development. Despite its functional role, little is known about the 1C metabolism in crustaceans. As part of an ongoing effort to characterize important pathways in Calanus finmarchicus, the biomass-dominant zooplankton in much of the North Atlantic Ocean, we identified transcripts encoding the 1C metabolism enzymes. Using an in silico workflow consisting of a transcriptome mining, reciprocal blasts, and structural analyses of the deduced proteins, we identified the entire set of enzymes in both cycles. The majority encoded for full-length proteins and clustered with homologs from other species. Stage-specific expression was reported, with several transcripts showing high expression in the naupliar stage (e.g., 10-FTHFD, SHMT2) while some methyltransferases (e.g., BHMT, SHMT, DNMT) were more expressed in adults. Overall, this study provides a set of genes which can be used as potential biomarkers of development and reproduction and can be tested in other zooplankters to assess ocean health status monitoring.

show abstract

Section: Introductionmentioning

confidence: 97%

Folate-Mediated One-Carbon Metabolism in the Crustacean Copepod Calanus finmarchicus: Identification of Transcripts and Relative Expression across Development

Ascione,

Carotenuto,

Lauritano

et al. 2024

JMSE

Self Cite

View full text Add to dashboard Cite

show abstract

A review of oil spill research in Canadian Arctic marine environments

Heshka,

Ridenour,

Saborimanesh

et al. 2024

Marine Pollution Bulletin

View full text Add to dashboard Cite

Estimation of the Vertical Carbon Flux Associated With the Respiration of Migrating Copepods Calanus Euxinus and Pseudocalanus Elongatus in the Black Sea

Liashko,

Mukhanov,

Litvinyuk

2024

JOR

View full text Add to dashboard Cite

Diel vertical migrations of zooplankton make a significant contribution to the functioning of the biological pump by providing active transport of carbon from surface layers to depth. In the Black Sea, quantitative assessments of this process have not been carried out until now. In this work, for the first time, calculated values of the carbon flux associated with the respiration of two mass species of migrating copepods, Calanus euxinus and Pseudocalanus elongatus, were obtained. The study was conducted at 13 daily stations in the northern and northeastern parts of the Black Sea from April to September 2020–2021 (cruises No. 114, 116, 118 of the R/V “Professor Vodyanitsky”). To estimate the carbon flux, we used: (1) expedition data on the daily dynamics of the vertical distribution of copepod abundance and biomass; (2) the Vinogradov’s migration coefficients obtained on their basis, characterizing the intensity of vertical movements of organisms; (3) calculated values of the intensity of their respiration, taking into account the water temperature and the time spent by them at depth during daylight hours. It was shown that the main contribution (up to 90 %) to the studied carbon flux was made by females and fifth-stage copepodites of C. euxinus. The values of the total flux increased from the spring minimum of 0.14 mmol C·m-2·day-1 in April to a maximum (0.46 mmol C·m-2·day-1) in September. The results obtained may indicate an important role of diel vertical migrations of zooplankton in the functioning of the biological pump of the Black Sea. The relevance of further studies of the seasonal and interannual dynamics of zooplankton migrations and associated fluxes, as well as their response to changes in climate and hydrological conditions in the Black Sea, is emphasized

show abstract

Effects of petrogenic pollutants on North Atlantic and Arctic Calanus copepods: From molecular mechanisms to population impacts

Cited by 3 publications

References 208 publications

Folate-Mediated One-Carbon Metabolism in the Crustacean Copepod Calanus finmarchicus: Identification of Transcripts and Relative Expression across Development

Folate-Mediated One-Carbon Metabolism in the Crustacean Copepod Calanus finmarchicus: Identification of Transcripts and Relative Expression across Development

A review of oil spill research in Canadian Arctic marine environments

Estimation of the Vertical Carbon Flux Associated With the Respiration of Migrating Copepods Calanus Euxinus and Pseudocalanus Elongatus in the Black Sea

Contact Info

Product

Resources

About