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Vogt R, Hartmann S, Kunze J, Jupke JF, Steinhoff B, Schönherr H, Kuhnert KD, Witte K, Lamatsch DK, Wanzenböck J. Silver nanoparticles adversely affect the swimming behavior of European Whitefish ( Coregonus lavaretus) larvae within the low µg/L range. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2022; 85:867-880. [PMID: 35881030 DOI: 10.1080/15287394.2022.2102099] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The aim of this study was to determine the effects of silver nanoparticles (AgNPs; speciation: NM-300 K) in the lab on the behavior of larvae in European Whitefish (Coregonus lavaretus), a relevant model species for temperate aquatic environments during alternating light and darkness phases. The behavioral parameters measured included activity, turning rate, and distance moved. C. lavaretus were exposed to AgNP at nominal concentrations of 0, 5, 15, 45, 135, or 405 µg/L (n = 33, each) and behavior was recorded using a custom-built tracking system equipped with light sources that reliably simulate light and darkness. The observed behavior was analyzed using generalized linear mixed models, which enabled reliable detection of AgNP-related movement patterns at 10-fold higher sensitivity compared to recently reported standard toxicological studies. Exposure to 45 µg/L AgNPs significantly resulted in hyperactive response patterns for both activity and turning rates after an illumination change from light to darkness suggesting that exposure to this compound triggered escape mechanisms and disorientation-like behaviors in C. lavaretus fish larvae. Even at 5 µg/L AgNPs some behavioral effects were detected, but further tests are required to assess their ecological relevance. Further, the behavior of fish larvae exposed to 135 µg/L AgNPs was comparable to the control for all test parameters, suggesting a triphasic dose response pattern. Data demonstrated the potential of combining generalized linear mixed models with behavioral investigations to detect adverse effects on aquatic species that might be overlooked using standard toxicological tests.
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Affiliation(s)
- Roland Vogt
- Research Department for Limnology, Mondsee, University of Innsbruck, Mondsee, Austria
| | - Sarah Hartmann
- Institute of Biology, Department of Chemistry - Biology, University of Siegen, Siegen, Germany
| | - Jan Kunze
- Institute of Real-time Learning Systems, Department of Electrical Engineering and Computer Science, University of Siegen, Siegen, Germany
| | - Jonathan Frederik Jupke
- Institute for Environmental Sciences, University of Koblenz-Landau, Landau in der Pfalz, Germany
| | - Benedikt Steinhoff
- Institute of Biology, Department of Chemistry - Biology, University of Siegen, Siegen, Germany
- Center of Micro- and Nanochemistry and Engineering (Cμ), University of Siegen, Siegen, Germany
| | - Holger Schönherr
- Institute of Biology, Department of Chemistry - Biology, University of Siegen, Siegen, Germany
- Center of Micro- and Nanochemistry and Engineering (Cμ), University of Siegen, Siegen, Germany
| | - Klaus-Dieter Kuhnert
- Institute of Real-time Learning Systems, Department of Electrical Engineering and Computer Science, University of Siegen, Siegen, Germany
| | - Klaudia Witte
- Institute of Biology, Department of Chemistry - Biology, University of Siegen, Siegen, Germany
| | | | - Josef Wanzenböck
- Research Department for Limnology, Mondsee, University of Innsbruck, Mondsee, Austria
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Klinard NV, Matley JK, Ivanova SV, Larocque SM, Fisk AT, Johnson TB. Application of machine learning to identify predators of stocked fish in Lake Ontario: using acoustic telemetry predation tags to inform management. JOURNAL OF FISH BIOLOGY 2021; 98:237-250. [PMID: 33015862 DOI: 10.1111/jfb.14574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/30/2020] [Accepted: 10/01/2020] [Indexed: 06/11/2023]
Abstract
Understanding predator-prey interactions and food web dynamics is important for ecosystem-based management in aquatic environments, as they experience increasing rates of human-induced changes, such as the addition and removal of fishes. To quantify the post-stocking survival and predation of a prey fish in Lake Ontario, 48 bloater Coregonus hoyi were tagged with acoustic telemetry predation tags and were tracked on an array of 105 acoustic receivers from November 2018 to June 2019. Putative predators of tagged bloater were identified by comparing movement patterns of six species of salmonids (i.e., predators) in Lake Ontario with the post-predated movements of bloater (i.e., prey) using a random forests algorithm, a type of supervised machine learning. A total of 25 bloater (53% of all detected) were consumed by predators on average (± S.D.) 3.1 ± 2.1 days after release. Post-predation detections of predators occurred for an average (± S.D.) of 78.9 ± 76.9 days, providing sufficient detection data to classify movement patterns. Tagged lake trout Salvelinus namaycush provided the most reliable classification from behavioural predictor variables (89% success rate) and was identified as the main consumer of bloater (consumed 50%). Movement networks between predicted and tagged lake trout were significantly correlated over a 6 month period, supporting the classification of lake trout as a common bloater predator. This study demonstrated the ability of supervised learning techniques to provide greater insight into the fate of stocked fishes and predator-prey dynamics, and this technique is widely applicable to inform future stocking and other management efforts.
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Affiliation(s)
- Natalie V Klinard
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, Canada
| | - Jordan K Matley
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, Canada
| | - Silviya V Ivanova
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, Canada
| | - Sarah M Larocque
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, Canada
| | - Aaron T Fisk
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, Canada
| | - Timothy B Johnson
- Ontario Ministry of Natural Resources and Forestry, Glenora Fisheries Station, Picton, Ontario, Canada
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Population structure and conservation genetic assessment of the endangered Pugnose Shiner, Notropis anogenus. CONSERV GENET 2013. [DOI: 10.1007/s10592-013-0542-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Margalida A, Carrete M, Hegglin D, Serrano D, Arenas R, Donázar JA. Uneven large-scale movement patterns in wild and reintroduced pre-adult bearded vultures: conservation implications. PLoS One 2013; 8:e65857. [PMID: 23776559 PMCID: PMC3679195 DOI: 10.1371/journal.pone.0065857] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Accepted: 05/02/2013] [Indexed: 11/18/2022] Open
Abstract
After the quasi-extinction of much of the European vertebrate megafauna during the last few centuries, many reintroduction projects seek to restore decimated populations. However, the future of numerous species depends on the management scenarios of metapopulations where the flow of individuals can be critical to ensure their viability. This is the case of the bearded vulture Gypaetus barbatus, an Old World, large body-sized and long-lived scavenger living in mountain ranges. Although persecution in Western Europe restrained it to the Pyrenees, the species is nowadays present in other mountains thanks to reintroduction projects. We examined the movement patterns of pre-adult non-breeding individuals born in the wild population of the Pyrenees (n = 9) and in the reintroduced populations of the Alps (n = 24) and Andalusia (n = 13). Most birds were equipped with GPS-GSM radio transmitters, which allowed accurate determination of individual dispersal patterns. Two estimators were considered: i) step length (i.e., the distance travelled per day by each individual, calculated considering only successive days); and ii) total dispersal distance (i.e., the distance travelled between each mean daily location and the point of release). Both dispersal estimators showed a positive relationship with age but were also highly dependent on the source population, birds in Andalusia and Alps moving farther than in Pyrenees. Future research should confirm if differences in dispersal distances are the rule, in which case the dynamics of future populations would be strongly influenced. In summary, our findings highlight that inter-population differences can affect the flow of individuals among patches (a key aspect to ensure the viability of the European metapopulation of the endangered bearded vulture), and thus should be taken into account when planning reintroduction programs. This result also raises questions about whether similar scenarios may occur in other restoration projects of European megafauna.
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Affiliation(s)
- Antoni Margalida
- Division of Conservation Biology, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland.
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Swatdipong A, Primmer CR, Vasemägi A. Historical and recent genetic bottlenecks in European grayling, Thymallus thymallus. CONSERV GENET 2009. [DOI: 10.1007/s10592-009-0031-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Population synchrony of a native fish across three Laurentian Great Lakes: evaluating the effects of dispersal and climate. Oecologia 2009; 162:641-51. [DOI: 10.1007/s00442-009-1487-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2008] [Accepted: 10/12/2009] [Indexed: 10/20/2022]
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Crispo E, Chapman LJ. Temporal Variation in Population Genetic Structure of a Riverine African Cichlid Fish. J Hered 2009; 101:97-106. [DOI: 10.1093/jhered/esp078] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Clemens BJ, Crawford SS. The Ecology of Body Size and Depth Use by Bloater (Coregonus hoyiGill) in the Laurentian Great Lakes: Patterns and Hypotheses. ACTA ACUST UNITED AC 2009. [DOI: 10.1080/10641260802618375] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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