Managing native and non-native sea lamprey (Petromyzon marinus) through anthropogenic change: A prospective assessment of key threats and uncertainties

Hume, John B.; Almeida, Pedro R.; Buckley, Connor M.; Criger, Lori A.; Madenjian, Charles P.; Robinson, Kelly; Wang, Christina J.; Muir, Andrew M.

doi:10.1016/j.jglr.2020.08.015

Cited by 24 publications

(12 citation statements)

References 157 publications

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“…The severe repercussions of anthropogenic activities on lamprey habitats, coupled with climate change effects on water temperatures, hydrology, and marine coastal circulation patterns, are causes for conservation concern. Documentation on lamprey species and populations worldwide (Hume et al, 2021;Lucas et al, 2021;Moser et al, 2021) These dams will prevent the access to critical habitats essential for spawning and larvae rearing in the catchment (Baigún et al, 2022;Baker et al, 2021;Quiroga et al, 2023). The poorly documented but evident declining of lamprey populations in the major Patagonian…”

Section: Morphological Analysismentioning

confidence: 99%

Identification of long‐preserved specimens reveals the historical geographic range of the Patagonian lamprey Geotria macrostoma (Burmeister, 1868) in southern South America

Riva Rossi,

Renaud,

Quiroga

et al. 2024

Journal of Fish Biology

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The lamprey genus Geotria Gray, 1851 currently includes only two species: G. australis and G. macrostoma. However, taxonomic relationships within the genus have traditionally been ambiguous and difficult to establish due to the extreme changes in morphology, dentition, and coloration that lampreys undergo during their life cycles, particularly during upstream migration and sexual maturation. Consequently, several lamprey specimens held in museum collections have remained unidentified, especially those from Argentina. In this study, a series of morphometric characters were subjected to discriminant function analysis (DFA) to identify the lamprey species collected during 1867–2004 from the de la Plata River and Patagonia. These specimens are housed at the Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” in Buenos Aires, the Museo de Historia Natural de Montevideo, and the Naturhistoriska riksmuseet in Stockholm. Based on the proportions of the length of the oral disc, prebranchial, and pre‐caudal body regions, and the depth of the trunk, DFA provided conclusive evidence that the specimens corresponded to the recently revalidated G. macrostoma (Burmeister, 1868), which was originally incorrectly named as Petromyzon macrostomus Burmeister, 1868, Exomegas macrostomus (Berg, 1899), Geotria chilensis (Berg, 1895), and Geotria macrostoma f. gallegensis Smitt, 1901, as well as other nontype museum individuals of uncertain taxonomic status. The identifications of these long‐preserved museum specimens provided key information on the historical geographic range of Argentinian lampreys and suggest that the disappearance of the species reported from northern localities (the Pampean Region) can be attributed to the degradation of their critical habitats, primarily caused by anthropogenic impact and climate change.

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Section: Morphological Analysismentioning

confidence: 99%

Identification of long‐preserved specimens reveals the historical geographic range of the Patagonian lamprey Geotria macrostoma (Burmeister, 1868) in southern South America

Riva Rossi,

Renaud,

Quiroga

et al. 2024

Journal of Fish Biology

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“…Sea lamprey invasion led to the implementation of a bi-national (US and Canada) control program that seeks to maintain the abundance of sea lamprey at levels low enough to be economically tolerable to the lake's multi-billion-dollar fishery [13]. Ironically, because of the efficacy of this control program, which aims to control populations by killing the filter-feeding sea lamprey larvae before they become large enough to metamorphose into parasitic juveniles and prevents adults from accessing spawning habitat using barriers [14], access to certain life stages of sea lamprey for research purposes has become severely limiting [15,16]. Limited access to sea lamprey for study was recognized as an issue decades ago [17], but early attempts at rearing them were unsuccessful [18].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Larval Sea Lamprey Petromyzon marinus Growth in the Laboratory: Influence of Temperature and Diet

Hume,

Bennis,

Bruning

et al. 2024

Aquaculture Research

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Conservation aquaculture provides a means for promoting environmental stewardship, useful both in the context of restoring native species and limiting the production of invasive species. Aquaculture of lampreys is a relatively recent endeavor aimed primarily at producing animals to support the restoration of declining native populations. However, in the Laurentian Great Lakes, where sea lamprey Petromyzon marinus are invasive, the ability to acquire a reliable source of certain life stages would be a significant benefit to those controlling their populations and studying the species. Here, we apply methodologies developed for Pacific lamprey Entosphenus tridentatus restoration to investigate the feasibility of rearing larval sea lamprey under laboratory conditions. In two experiments lasting 3 and 9 months, we tested the effects of different dietary sources and water temperature (ambient and controlled) on the survival and growth of wild-caught larvae. Rearing conditions had no effect on mortality, as larval survival was 100% in both experiments. Growth was significantly affected by water temperature, with the highest average daily growth rates observed at 22 and 15°C (0.14 mm day−1) and lowest at 8°C (0.06 mm day−1). Diets of yeast alone (0.19 and 0.21 g L−1) performed better than those comprising a mixture of yeast and other material when fed 3 times weekly (rice flour, wheat flour, fish meal; 0.19 and 0.32 g L−1). Averaged across the three constant temperatures (8, 15, and 22°C), larvae fed on yeast grew 0.13 mm day−1 and 0.01 g day−1, whereas on yeast + fish meal, they grew 0.09 mm day−1 and 0.01 g day−1. At ambient temperature (4–20°C), larvae fed on yeast grew 0.15 mm day−1 and 0.01 g day−1, whereas those fed on yeast + wheat flour grew 0.13 mm day−1 and 0.008 g day−1 and those fed on yeast + rice flour grew 0.12 mm day−1 and 0.009 g day−1. An experimental duration of 90 days was sufficient to detect significant changes to larval sea lamprey growth stemming from temperature variation. Overall, rearing of sea lamprey in captivity appears feasible at low density (31–32 g m−2 and 17–25 larvae m−2), but uncertainties remain regarding the most appropriate means of providing adequate feed for these fish in high-density conditions.

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“…Both males and females build nests, often in pair but sometimes as groups of several individuals. This species is considered endangered in the most important part of its native area in Europe and North America, where the largest sea lamprey fisheries occur (Beaulaton et al, 2008) while being considered invasive in the Laurentian Great Lakes (Hume et al, 2021), where the invasive populations affect fisheries by killing salmonids (Farmer et al, 1975). Those opposite concerns lead to the need for an accurate estimation of sea lamprey populations to monitor the efficiency of either conservation or control policies.…”

Section: Introductionmentioning

confidence: 99%

ABC model for estimating sea lamprey local population size using a simple nest count during the spawning season

Dhamelincourt

Tentelier

Elosegi

2023

Knowl. Manag. Aquat. Ecosyst.

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Population estimation implies considering the biology of the species, but also the constraints of logistic aspects such as cost. While common methods based on individual counts can provide precise estimates, they require an extensive sampling effort. An alternative to these methods is using cues linked to the species abundance. In that case, producing absolute estimates requires assessing the relationship between the individuals and these cues. In this paper, we propose a model based on data on spawning behaviour and Approximate Bayesian Computation to estimate the number of sea lamprey spawners using nest counts data. By counting the daily number of occupied nests and using parameters from a behavioural study, we set up a model simulating a spawning season and returning a population estimate by comparison with field data. Our model gives realistic estimates and we discuss the parameters on which to prioritize data collection with a sensitivity analysis, and show that halving the sample size provides a still satisfactory accuracy. We made an easily parametrizable application to run the model for any people interested in sea lamprey population estimation, and believe this framework to be a good way to increase data collection for both endangered and invasive sea lamprey.

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Managing native and non-native sea lamprey (Petromyzon marinus) through anthropogenic change: A prospective assessment of key threats and uncertainties

Cited by 24 publications

References 157 publications

Identification of long‐preserved specimens reveals the historical geographic range of the Patagonian lamprey Geotria macrostoma (Burmeister, 1868) in southern South America

Identification of long‐preserved specimens reveals the historical geographic range of the Patagonian lamprey Geotria macrostoma (Burmeister, 1868) in southern South America

Evaluation of Larval Sea Lamprey Petromyzon marinus Growth in the Laboratory: Influence of Temperature and Diet

ABC model for estimating sea lamprey local population size using a simple nest count during the spawning season

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