Interactive effects of extreme temperature and a widespread coastal metal contaminant reduce the fitness of a common tropical copepod across generations

Khuong V. Dinh*, Quyen T. T. Nguyen, Thi-My-Chi Vo, Trung Ba Bui, Thanh-Son Dao, Duc M. Tran, Nam X. Doan, Trinh S. H. Truong, Mary S. Wisz, Torkel Gissel Nielsen, Minh T. T. Vu, Minh-Hoang Le

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Tropical coastal areas are increasingly exposed to temperature extremes from marine heatwaves and contaminants from anthropogenic activities. The interactive effects of these environmental changes on marine life are understudied. We investigated the direct and cross-generational effects of copper (Cu) on F0 and F1 generations of the common tropical copepod Pseudodiaptomus annandalei under extreme temperatures (30 and 34 °C). In F0, Cu exposure reduced survival and nauplii production; these patterns were more pronounced at 34 °C and in females. F0 Copepods produced more faecal pellets at 34 °C than 30 °C, indicating a higher energetic demand. In F1, the number of F1 adults was lower in CuF0 and at 34 °C. Cu-exposed F0 produced larger adult F1, while exposure to 34 °C resulted in smaller adult F1. Our results show that tropical copepods are highly vulnerable to the interactive effects of contaminants and extreme temperatures.
Original languageEnglish
Article number111509
JournalMarine Pollution Bulletin
Volume159
Number of pages8
ISSN0025-326X
DOIs
Publication statusPublished - 2020

Keywords

  • Marine heatwave
  • Carryover effect
  • Contaminants
  • Copepod fitness
  • Cumulative impact
  • Multiple stressors

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