|
1
|
Šrut M, Sabolić I, Erdelez A, Grbin D, Furdek Turk M, Bakarić R, Peharda M, Štambuk A. Marine Pollutant Tributyltin Affects DNA Methylation and Fitness of Banded Murex ( Hexaplex trunculus) Populations. TOXICS 2023; 11:276. [PMID: 36977041 PMCID: PMC10051066 DOI: 10.3390/toxics11030276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/07/2023] [Accepted: 03/13/2023] [Indexed: 06/18/2023]
Abstract
Banded murex, Hexaplex trunculus, is a marine gastropod whose reproductive fitness can be severely affected by very low concentrations of antifouling compound tributyltin (TBT). TBT has strong xenoandrogen impacts on snails, causing the development of imposex (e.g., the superimposition of male sexual characteristic in females), thereby affecting the fitness of entire populations. TBT is also known as a DNA-demethylating agent and an obesogenic factor. The aim of this study was to unravel the interactions between TBT bioaccumulation, phenotypic responses, and epigenetic and genetic endpoints in native populations of H. trunculus. Seven populations inhabiting environments along the pollution gradient were sampled in the coastal eastern Adriatic. These included sites of intense marine traffic and boat maintenance activity and sites with low anthropogenic impact. Populations inhabiting intermediately and highly polluted sites exhibited higher TBT burdens, higher incidences of imposex, and higher wet masses of snails than populations in lowly polluted sites. Other morphometric traits and cellular biomarker responses did not show clear differentiation among populations in relation to marine traffic/pollution intensity. An analysis of methylation sensitive amplification polymorphism (MSAP) revealed environmentally driven population differentiation and higher epigenetics than genetic within-population diversity. Moreover, decreases in genome-wide DNA methylation coincided with the imposex level and snail mass, suggesting an epigenetic background of the animal phenotypic response.
Collapse
Affiliation(s)
- Maja Šrut
- Institute of Zoology, Center for Molecular Biosciences, University of Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria;
| | - Iva Sabolić
- Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia; (I.S.); (D.G.); (R.B.)
| | - Anita Erdelez
- Institute of Oceanography and Fisheries, Šetalište I. Meštrovića 63, 21000 Split, Croatia; (A.E.); (M.P.)
| | - Dorotea Grbin
- Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia; (I.S.); (D.G.); (R.B.)
| | - Martina Furdek Turk
- Division for Marine and Environmental Research, Ruđer Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia;
| | - Robert Bakarić
- Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia; (I.S.); (D.G.); (R.B.)
| | - Melita Peharda
- Institute of Oceanography and Fisheries, Šetalište I. Meštrovića 63, 21000 Split, Croatia; (A.E.); (M.P.)
| | - Anamaria Štambuk
- Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia; (I.S.); (D.G.); (R.B.)
| |
Collapse
|
|
2
|
Endocrine Disruption and In Vitro Ecotoxicology: Recent Advances and Approaches. IN VITRO ENVIRONMENTAL TOXICOLOGY - CONCEPTS, APPLICATION AND ASSESSMENT 2017; 157:1-58. [DOI: 10.1007/10_2016_2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|