Details

Autor(en) / Beteiligte

• Dinh, Khuong V.
• Doan, Kha L.U.
• Doan, Nam X.
• Pham, Hung Q.
• Le, Thi Hoang Oanh
• Le, Minh-Hoang
• Vu, Minh T.T.
• Dahms, Hans-Uwe
• Truong, Kiem N.

Titel

Parental exposures increase the vulnerability of copepod offspring to copper and a simulated marine heatwave

Ist Teil von

• Environmental pollution (1987), 2021-10, Vol.287, p.117603-117603, Article 117603

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Extreme temperatures from marine heatwaves (MHWs) and pollution are dominant stressors in tropical marine ecosystems. However, we know little about the role of transgenerational effects of metals and MHWs in shaping the offspring's vulnerability to these stressors. We addressed this fundamental knowledge gap by exposing the planktonic copepod Pseudodiaptomus incisus to copper (Cu: control, 15 and 60 μg L−1) under 2 temperatures (30 and a simulated marine heatwave at 34 °C) in the first generation (F1) and 16 treatments in F2: offspring from each of 4 F1 conditions (control or 15 μg Cu L−1 × 30 or 34 °C) was reared in 4 F2 conditions (control or 15 μg Cu L−1 × 30 or 34 °C). We assessed changes in copepod performance, particularly survival, adult size, grazing, and reproduction. In F1, Cu or marine heatwave (MHW) exposures reduced all fitness traits of F1; the effects were particularly strong when both stressors were present. Transgenerational effects of Cu or MHW also strongly reduced F2 performance. Direct Cu and MHW effects on the offspring were further strengthened by transgenerational effects, resulting in more substantial reductions in F2 performance when both generations were exposed to these stressors. As copepods are major food resources for corals, shrimps, or fish larvae and juveniles, strong transgenerational and direct effects of Cu and MHW can have a cascading effect on entire coastal food webs. These results highlight the importance of considering the interaction of transgenerational and direct effects of multiple stressors, particularly relevant for short-lived organisms in tropical marine ecosystems. [Display omitted] •Marine heatwaves (MHW) and pollution are dominant stressors in the tropics.•MHW increases the toxicity of copper on tropical copepod Pseudodiaptomus incisus.•Parental exposure to MHW increases offspring vulnerability to MHW and Cu.•Parental exposure to Cu increases offspring vulnerability to MHW and Cu. Single and combined effect of metals and marine heatwaves on the parental generation of marine copepods reduce the capacity of offspring to cope with these stressors.