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Differential elemental accumulation of the signal crayfish (Pacifastacus leniusculus) along an invasion gradient

2025Artigo científico Acesso aberto
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datacite.subject.fosCiências Naturais::Ciências Biológicas
datacite.subject.fosEngenharia e Tecnologia::Engenharia do Ambiente
datacite.subject.sdg14:Proteger a Vida Marinha
datacite.subject.sdg15:Proteger a Vida Terrestre
datacite.subject.sdg04:Educação de Qualidade
dc.contributor.authorGonçalves, Diana
dc.contributor.authorSousa, Ronaldo
dc.contributor.authorSouza-Kasprzyk, Juliana
dc.contributor.authorNiedzielski, Przemyslaw
dc.contributor.authorTeixeira, Amilcar
dc.contributor.authorPadilha, Janeide de Assis Guilherme
dc.date.accessioned2026-02-16T15:29:31Z
dc.date.available2026-02-16T15:29:31Z
dc.date.issued2025
dc.description.abstractThe non-native signal crayfish (Pacifastacus leniusculus) can influence elemental cycling in aquatic ecosystems through bioaccumulation and transfer of chemical elements, with potential spatial variation along invasion gradients. In this study, we investigate the differences in elemental exposure in signal crayfish in the Rabaçal River, Portugal. We focus on potential intra-population differences along a well-defined invasion gradient, comparing individuals from the invasion core (upstream) and the downstream expanding front (n = 30 each). We examined 57 elements in the muscle of the signal crayfish, including essential elements (EEs): Mn, Co, Ni, Cu, Zn, Mg, Ca, Fe, Se, V, S; non-essential and potentially toxic elements (PTEs): Cd, Hg, Pb, U, As, Sr, Ba, Cr, Zr, Cs, Tl; and technology-critical elements (TCEs): Ti, Rb, La, Ce, Pr, Gd, Dy, Ho, Er, Yb, Ga, Ge, Hf, Ta, In, Re, Te, Pt. We explored the relationship between element concentrations and signal crayfish trophic ecology, inferred through stable isotope analysis (613C and 615N), behaviour, and epibiotic associate load-factors known to shape invasion success through their effects on resource acquisition, competition, and physiological stress. Significant differences in element concentrations were found between individuals from the core and front. Individuals from the front showed higher levels (mean mu g/kg, dry weight) of Co: (476 vs. 297), V: (390 vs. 262), Mn: (2.6 x 104 vs. 1.0 x 104), Hg: (2526 vs.1658), andTa: (21 vs. 11). These patterns suggest that front individuals, with higher 615N values and more exploratory behaviour, feed at higher trophic levels (e.g., macroinvertebrates), which may explain the elevated concentrations of biomagnifying elements such as Hg and Ta. On the other hand, individuals from the core had higher levels of Pb: (361 vs. 234), and Sr: (39772 vs. 20018), likely due to a diet based on basal resources, as supported by the strong negative correlation between Pb and 613C, indicating reliance on benthic sources more prone to lead accumulation. This study increases our understanding of contaminant accumulation along an invasion gradient, offering insights for management practices-such as targeted removal of highly contaminated individuals, improved monitoring of metal levels in invaded areas, and public awareness campaigns-to minimise ecological impacts on higher trophic levels.eng
dc.description.sponsorshipThis study was supported by the Portuguese Foundation for Science and Technology (FCT) through national funds under the project MULTI-CRASH: Multi-dimensional ecological cascades triggered by an invasive species in pristine habitats (PTDC/CTA-AMB/0510/2021) (https://doi.org/10.54499/PTDC/CTA-AMB/0510/2021) and the Scientific Employment Stimulus – 6th Edition (2023.07078.CEECIND) (https://doi.org/10.54499/2023.07078.CEECIND/CP2841/CT0002).
dc.identifier.citationGonçalves, Diana; Sousa, Ronaldo; Souza-Kasprzyk, Juliana; Niedzielski, Przemyslaw; Teixeira, Amilcar; Padilha, Janeide de A. G. (2025). Differential elemental accumulation of the signal crayfish (Pacifastacus leniusculus) along an invasion gradient. NeoBiota. ISSN 1314-2488. 102, p. 37-62
dc.identifier.doi10.3897/neobiota.102.148414
dc.identifier.issn1314-2488
dc.identifier.issn1619-0033
dc.identifier.urihttp://hdl.handle.net/10198/35761
dc.language.isoeng
dc.peerreviewedyes
dc.publisherPensoft Publishers
dc.relationMULTI-CRASH: Multi-dimensional ecological cascades triggered by an invasive species in pristine habitats
dc.relation.ispartofNeoBiota
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subjectBehaviour
dc.subjectDiet
dc.subjectFreshwater ecosystems
dc.subjectInvasion gradient
dc.subjectNon-native species
dc.subjectParasitic load
dc.subjectPotentially toxic elements
dc.subjectStable isotopes
dc.subjectTechnology-critical elements
dc.titleDifferential elemental accumulation of the signal crayfish (Pacifastacus leniusculus) along an invasion gradienteng
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumberPTDC/CTA-AMB/0510/2021
oaire.awardTitleMULTI-CRASH: Multi-dimensional ecological cascades triggered by an invasive species in pristine habitats
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/Concurso de Projetos IC&DT em Todos os Domínios Científicos/PTDC%2FCTA-AMB%2F0510%2F2021/PT
oaire.citation.endPage62
oaire.citation.startPage37
oaire.citation.titleNeoBiota
oaire.citation.volume102
oaire.fundingStreamConcurso de Projetos IC&DT em Todos os Domínios Científicos
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameTeixeira
person.givenNameAmilcar
person.identifier2153193
person.identifier.ciencia-id9510-3CF3-0393
person.identifier.orcid0000-0001-5336-1174
person.identifier.scopus-author-id7202385393
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
relation.isAuthorOfPublication4f0753fd-4b4f-46f6-8e2f-20c7f835a32a
relation.isAuthorOfPublication.latestForDiscovery4f0753fd-4b4f-46f6-8e2f-20c7f835a32a
relation.isProjectOfPublication0e75c512-e95c-48c8-ac36-4e184d20ea44
relation.isProjectOfPublication.latestForDiscovery0e75c512-e95c-48c8-ac36-4e184d20ea44

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