Developing behavioural ecotoxicology assessment methods in the tropical marine amphipod, Parhyale hawaiensis: A study with benzo[a]pyrene (BaP).

Autor: Lawan I; Institute of Life and Earth Sciences, School of Energy, Geoscience, Infrastructure, and Society, Heriot-Watt University, Edinburgh EH14 4AS, Scotland, United Kingdom., Umbuzeiro GA; Faculdade de Tecnologia, Universidade de Campinas, UNICAMP, Limeira, SP, Brazil., Lyndon AR; Institute of Life and Earth Sciences, School of Energy, Geoscience, Infrastructure, and Society, Heriot-Watt University, Edinburgh EH14 4AS, Scotland, United Kingdom., Henry TB; Institute of Life and Earth Sciences, School of Energy, Geoscience, Infrastructure, and Society, Heriot-Watt University, Edinburgh EH14 4AS, Scotland, United Kingdom; Department of Forestry Wildlife and Fisheries, The University of Tennessee, Knoxville, TN, USA. Electronic address: t.henry@hw.ac.uk.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2024 Dec; Vol. 209 (Pt A), pp. 117142. Date of Electronic Publication: 2024 Oct 20.
DOI: 10.1016/j.marpolbul.2024.117142
Abstrakt: Toxicant-induced behavioural changes provide important insights into environmental toxicity, particularly in vulnerable tropical marine habitats. However, ecotoxicological knowledge of organisms in these environments is insufficient. We aimed to develop innovative and cost-effective ecotoxicology methods using Parhyale hawaiensis as a tropical model organism. Adult P. hawaiensis were exposed to aqueous benzo[a]pyrene (BaP) (2 μM) and dietary BaP (50, 250, or 1250 μg BaP/g diet). Survival (24 to 96 h) and behavioural responses (21d) to foraging, reproduction, and predator avoidance were studied. Aqueous and dietary exposures to benzo[a]pyrene (BaP) did not affect survival but induced significant immobility with effective concentration (EC 50  ± SE, 96 h at 11.89 ± 1.19 μM). Relative to the control group, aqueous exposure to 2 μM and dietary exposure to 250 and 1250 μg BaP/g feed resulted in statistically significant behavioural changes. These included a 55-76 % reduction in feeding rates, 133 % increase in chemosensation time, 60-122 % drop in moulting frequency, 200 % delay in precopulatory activity, 50-83 % decrease in geotactic activity, and 300-400 % increase in phototactic activity (all significant at p ≤ 0.05). The methods developed in this study are cost-effective, sensitive, and readily integrated into other endpoint analyses, reinforcing the potential of P. hawaiensis as a tropical ecotoxicology model for detecting toxicant-induced behavioural responses and enhancing marine risk assessments.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Ibrahim Lawan reports financial support was provided by Petroleum Technology Development Fund (PTDF) of Nigeria. Ibrahim Lawan reports a relationship with Petroleum Technology Development Fund (PTDF) of Nigeria that includes: funding grants. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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