Groundtruthing of pelagic forage fish detected by hydroacoustics in a whale feeding area using environmental DNA

Berger, Chloé Suzanne; Bougas, Bérénice; Turgeon, Stéphanie; Ferchiou, Sophia; Ménard, Nadia; Bernatchez, Louis

doi:10.1002/edn3.73

Cited by 11 publications

(6 citation statements)

References 61 publications

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“…Environmental DNA (eDNA) analyses for surveillance and monitoring organisms rapidly gained popularity beginning about a decade ago, advancing species detection for research and management due to the sensitivity and specificity of the new tools. These methods have since been applied to many different sample types, including water samples from freshwater (e.g., Doble et al., 2020; Ficetola et al., 2008) and marine (e.g., Berger et al., 2020; Foote et al., 2012) environments as well as collection of sediments for detection of terrestrial vertebrates (e.g., Andersen et al., 2012) and invertebrates (Bienert et al., 2012) and even collection of air samples for terrestrial plant detection (e.g., Johnson et al., 2019a). Furthermore, eDNA analyses have been applied toward a wide variety of research and management objectives, including detection of invasive species (e.g., Amberg et al., 2019; Jerde et al., 2011), threatened and endangered species (e.g., Gasparini et al., 2020; Thomsen et al., 2011), and pathogens (e.g., Barnes et al., 2020; Limon et al., 2019; Mahon et al., 2018).…”

Section: Introductionmentioning

confidence: 99%

Environmental conditions influence eDNA particle size distribution in aquatic systems

et al. 2020

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Section: Introductionmentioning

confidence: 99%

Environmental conditions influence eDNA particle size distribution in aquatic systems

et al. 2020

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“…While still in its infancy, eDNA has been used to quantify prey distribution and diversity in areas with critically endangered populations of Yangtze finless porpoise ( Neophocaena asiaeorientalis ; Qu et al, 2020 ) and to detect spatiotemporal variability in pelagic forage fish in the Saguenay–St. Lawrence Marine Park, an area used by endangered beluga whales ( Delphinapterus leucas ; Berger et al, 2020 ).…”

Section: Resultsmentioning

confidence: 99%

Key questions in marine mammal bioenergetics

McHuron

Adamczak

Arnould

et al. 2022

Conservation Physiology

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Bioenergetic approaches are increasingly used to understand how marine mammal populations could be affected by a changing and disturbed aquatic environment. There remain considerable gaps in our knowledge of marine mammal bioenergetics, which hinder the application of bioenergetic studies to inform policy decisions. We conducted a priority-setting exercise to identify high-priority unanswered questions in marine mammal bioenergetics, with an emphasis on questions relevant to conservation and management. Electronic communication and a virtual workshop were used to solicit and collate potential research questions from the marine mammal bioenergetic community. From a final list of 39 questions, 11 were identified as ‘key’ questions because they received votes from at least 50% of survey participants. Key questions included those related to energy intake (prey landscapes, exposure to human activities) and expenditure (field metabolic rate, exposure to human activities, lactation, time-activity budgets), energy allocation priorities, metrics of body condition and relationships with survival and reproductive success and extrapolation of data from one species to another. Existing tools to address key questions include labelled water, animal-borne sensors, mark-resight data from long-term research programs, environmental DNA and unmanned vehicles. Further validation of existing approaches and development of new methodologies are needed to comprehensively address some key questions, particularly for cetaceans. The identification of these key questions can provide a guiding framework to set research priorities, which ultimately may yield more accurate information to inform policies and better conserve marine mammal populations.

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“…Recent advances in DNA sequencing, including Single Nucleotide Polymorphisms (SNPs), could be valuable tools to increase our knowledge on distribution and stock structure of Canada's forage fish species, particularly for non-commercial species (Leache and Oaks 2017). Environmental DNA (eDNA) may also be a cost-effective tool for collecting distribution data of forage fish when other survey methods are not available (reviewed in Wang et al 2021), or to groundtruth other survey methods, such as hydroacoustic surveys (e.g., Berger et al 2020) and bottom trawl surveys, which are known to under-sample forage fish species (Afzali et al 2021, Stoeckle et al 2021). An EAFM benefits from the inclusion of TEK or LEK; TEK can augment information on data-deficient stocks/populations, which includes many of Canada's forage fish (Tallman and Marcoux 2021).…”

Section: Discussionmentioning

confidence: 99%

Canada's forage fish: an important but poorly understood component of marine ecosystems

Boldt

Murphy

Chamberland

et al. 2022

Can. J. Fish. Aquat. Sci.

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Forage fish form a critical trophic link in marine ecosystems, and yet, for many species, there is limited information available. As nations move from single species stock assessments to ecosystem approaches to fisheries management (EAFMs), more information on forage fish will be required. In this study, 50 years of scientific literature were systematically mapped for 11 forage fish species in Canada’s Arctic, Atlantic, and Pacific oceans. The objectives were to identify 1) knowledge clusters and gaps and 2) the pressures studied in relation to forage fish outcomes. Of the 2897 articles mapped, the majority studied adults, and the distribution, productivity, growth and life history of commercially fished species. Knowledge gaps were identified for forage fish: 1) that were non-commercially exploited; 2) egg and larval life history stages of most species and juveniles of non-commercial species; 3) diets of most species; 4) migration and performance for all species, and survival of non-commercial species; and 5) the effects of some pressures (e.g., large-scale climate pressures). Addressing these knowledge gaps would improve the application of EAFMs.

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Groundtruthing of pelagic forage fish detected by hydroacoustics in a whale feeding area using environmental DNA

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 11 publications

References 61 publications

Environmental conditions influence eDNA particle size distribution in aquatic systems

Environmental conditions influence eDNA particle size distribution in aquatic systems

Key questions in marine mammal bioenergetics

Canada's forage fish: an important but poorly understood component of marine ecosystems

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