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Using a metabolomics approach to investigate the sensitivity of a potential Arctic-invader and its Arctic sister-species to marine heatwaves and traditional harvesting disturbances.
Beaudreau, Nicholas; Page, Tessa M; Drolet, David; McKindsey, Christopher W; Howland, Kimberly L; Calosi, Piero.
Afiliação
  • Beaudreau N; Laboratoire de Physiologie Écologique et Évolutive Marine, Département de Biologie, Chimie et Géographie, Université du Québec à Rimouski, Rimouski, Québec, Canada.
  • Page TM; Laboratoire de Physiologie Écologique et Évolutive Marine, Département de Biologie, Chimie et Géographie, Université du Québec à Rimouski, Rimouski, Québec, Canada.
  • Drolet D; Fisheries and Oceans Canada, Demersal and Benthic Science Branch, Institut Maurice-Lamontagne, Mont-Joli, Québec, Canada.
  • McKindsey CW; Fisheries and Oceans Canada, Demersal and Benthic Science Branch, Institut Maurice-Lamontagne, Mont-Joli, Québec, Canada.
  • Howland KL; Fisheries and Oceans Canada, Arctic and Aquatic Research Division, Freshwater Institute, Winnipeg, Manitoba, Canada.
  • Calosi P; Laboratoire de Physiologie Écologique et Évolutive Marine, Département de Biologie, Chimie et Géographie, Université du Québec à Rimouski, Rimouski, Québec, Canada. Electronic address: piero_calosi@uqar.ca.
Sci Total Environ ; 917: 170167, 2024 Mar 20.
Article em En | MEDLINE | ID: mdl-38242480
ABSTRACT
Coastal species are threatened by fishing practices and changing environmental conditions, such as marine heatwaves (MHW). The mechanisms that confer tolerance to such stressors in marine invertebrates are poorly understood. However, differences in tolerance among different species may be attributed to their geographical distribution. To test the tolerance of species occupying different thermal ranges, we used two closely related bivalves the softshell clam Mya arenaria (Linnaeus, 1758), a cold-temperate invader with demonstrated potential for establishment in the Arctic, and the blunt gaper Mya truncata (Linnaeus, 1758), a native polar species. Clams were subjected to a thermal stress, mimicking a MHW, and harvesting stress in a controlled environment. Seven acute temperature changes (2, 7, 12, 17, 22, 27, and 32 °C) were tested at two harvesting disturbance intensities (with, without). Survival was measured after 12 days and three tissues (gills, mantle, and posterior adductor muscle) collected from surviving individuals for targeted metabolomic profiling. MHW tolerance differed significantly between species 26.9 °C for M. arenaria and 17.8 °C for M. truncata, with a negligeable effect of harvesting. At the upper thermal limit, M. arenaria displayed a more profound metabolomic remodelling when compared to M. truncata, and this varied greatly between tissue types. Network analysis revealed differences in pathway utilization at the upper MHW limit, with M. arenaria displaying a greater reliance on multiple DNA repair and expression and cell signalling pathways, while M. truncata was limited to fewer pathways. This suggests that M. truncata is ill equipped to cope with warming environments. MHW patterning in the Northwest Atlantic may be a strong predictor of population survival and future range shifts in these two clam species. As polar environments undergo faster rates of warming compared to the global average, M. truncata may be outcompeted by M. arenaria expanding into its native range.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Mya Tipo de estudo: Diagnostic_studies Limite: Animals / Humans Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Mya Tipo de estudo: Diagnostic_studies Limite: Animals / Humans Idioma: En Ano de publicação: 2024 Tipo de documento: Article