Salinity and temperature effects on productivity of a tropical calanoid copepod
            <i>Pseudodiaptomus incisus</i>

Nguyen, Thuy Tuong; Le, Minh Hoang; Doan, Nam X.; Nguyen, Sy T.; Truong, Trinh Si-Hai; Vu, Minh T.; Dinh, Khuong Van

doi:10.1111/are.14727

Cited by 16 publications

(8 citation statements)

References 47 publications

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“…The reduced body length of M. dubia under elevated temperature is well in agreement with findings from previous studies on a range of animal species from different taxa. ,, This may be a result of faster development than the growth rate in response to increase in temperature . Predator cues showed an inconsistent effect on the development time of M.…”

Section: Resultssupporting

confidence: 91%

“…15,51,52 This may be a result of faster development than the growth rate in response to increase in temperature. 53 Predator cues showed an inconsistent effect on the development time of M. dubia (main effect of predator cues, Figure 1a and Table 1) but negatively affected their body size and lifespan (main effect of predator cues, Figure 1b,c and Table 1). However, the overall effect of predator cues on body size was small (the average effect size ∼2%, Figure 3b), while it had a relatively larger negative effect (∼12%) on the lifespan of M. dubia (Figure 3c).…”

Section: Resultsmentioning

confidence: 98%

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Changes in the Magnitude of the Individual and Combined Effects of Contaminants, Warming, and Predators on Tropical Cladocerans across 11 Generations

Pham

Dinh

Nguyen

et al. 2020

Environ. Sci. Technol.

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A massive challenge in ecotoxicology is assessing how the interaction of contaminants, climate change, and biotic stressors shapes the structure and functions of natural populations. Furthermore, it is not known whether contemporary evolutionary responses to multiple stressors across multigenerations may alter the interaction of these stressors. To address these issues, we exposed Moina dubia to lead (Pb, 50 μg/L) under two temperatures (25 and 28 °C) with/without predator cues from climbing perch (Anabas testudineus) for 11 generations (F1–F11). We assessed changes in M. dubia fitness, including development time, adult size, lifespan, fecundity, and neonate production. We found strong negative effects of Pb, elevated temperature, and predator cues on the fitness of M. dubia. Strikingly, Pb-induced reduction in the performance of M. dubia was stronger at 25 °C and in the absence of predator cues. The individual and interactive effects of Pb, temperature, and predator cues on M. dubia were stronger across F1–F9 and generally leveled off in F10–F11. Our results highlight the high vulnerability of M. dubia to multiple stressors, thus weakening top-down control on algal blooms in eutrophic lakes. Our study underscores the importance of integrating evolutionary responses in realistic ecotoxicological risk assessments of contaminants interacting with climatic and biotic stressors.

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Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 98%

Changes in the Magnitude of the Individual and Combined Effects of Contaminants, Warming, and Predators on Tropical Cladocerans across 11 Generations

Pham

Dinh

Nguyen

et al. 2020

Environ. Sci. Technol.

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“…Pseudodiaptomus incisus is a calanoid copepod that can be found abundantly in aquaculture ponds, bays, lagoons, mangroves, and estuaries in Vietnam (BISMAL, 2020 ; Truong et al, 2014 ). They develop from the first nauplii to adults in 8–14 days, depending on temperatures (25–35°C) and salinity (5–40 PSU) (Nguyen, Le, Doan, Nguyen, et al, 2020 ). At temperatures of 30–34°C, the adult lifespan of P. incisus varies from 11 to 24 days (Truong et al, 2020 ).…”

Section: Methodsmentioning

confidence: 99%

Transgenerational exposure to marine heatwaves ameliorates the lethal effect on tropical copepods regardless of predation stress

Truong

Doan

et al. 2022

Ecology and Evolution

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Marine heatwaves (MHWs) are emerging as a severe stressor in marine ecosystems. Extreme warm sea surface temperatures during MHWs often exceed the optimal thermal range for more than one generation of tropical coastal zooplankton. However, it is relatively unknown whether transgenerational plasticity (TGP) to MHWs may shape the offspring's fitness, particularly in an ecologically relevant context with biotic interactions such as predation stress. We addressed these novel research questions by determining the survival, reproductive success, and grazing rate of the copepod Pseudodiaptomus incisus exposed to MHW and fish predator cues (FPC) for two generations (F1 and F2). The experiment was designed in a full orthogonal manner with 4 treatments in F1 and 16 treatments in F2 generation. In both generations, MHW reduced P. incisus survival, reproductive parameters, and grazing by 10%–62% in MHW, but these parameters increased by 2%–15% with exposure to FPC, particularly at control temperature. F2 reproductive success and grazing rate as indicated by cumulative fecal pellets were reduced by 20%–30% in F1‐MHW, but increased by ~2% in F1‐FPC. Strikingly, MHW exposure reduced 17%–18% survival, but transgenerational exposure to MHWs fully ameliorated its lethal effect and this transgenerational effect was independent of FPC. Increased survival came with a cost of reduced reproductive success, constrained by reduced grazing. The rapid transgenerational MHW acclimation and its associated costs are likely widespread and crucial mechanisms underlying the resilience of coastal tropical zooplankton to MHWs in tropical coastal marine ecosystems.

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“…Copepod biomass production has become one of the major interests in aquaculture for the last two decades (Drillet et al 2006, Doan et al 2018, Grønning et al 2019, Nguyen et al 2020, Drillet et al 2011 due to the high nutritional value, size variations and behaviour of copepods which may be relevant for larvae of many aquaculture species (Drillet et al 2011, Drillet et al 2006. Calanoid copepod species have high levels of highly unsaturated fatty acids (HUFA) (Drillet et al 2008, Drillet et al 2006, Rayner et al 2017b, Rasdi and Qin 2016.…”

Section: Introductionmentioning

confidence: 99%

Density effects on a tropical copepodAcartiasp.: implications as live feed in aquaculture

Pham

Bui

Doan

et al. 2023

Preprint

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Calanoid copepodAcartiaspecies are major live feeds for the early stages of economically important marine fish in hatcheries in Southeast Asian countries. However, rearingAcartiacopepods at high densities to increase productivity remains a major challenge. To address the issue, we conducted two experiments on 1)Acartiasp. nauplii (1000, 3000, 6000, 9000, 12000, and 15000 individuals L-1) and 2) adults (1000, 1500, 2000, and 2500 individuals L-1). We assessed key parameters for biomass production: development, survival, and egg production. In general, increased density resulted in longer development time, and lowered survival and egg production, but did not affect the size of adult males and females. Despite survival to adulthood decreasing at higher stocking nauplii densities, the number of surviving adults was highest at a stocking density of 12000 ind L-1. Egg production was very low which may be the result of high egg predation. The total eggs harvested were highest at the lowest adult density. These results are essential for the biomass production ofAcartiasp. in central Vietnam.

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Salinity and temperature effects on productivity of a tropical calanoid copepod Pseudodiaptomus incisus

Cited by 16 publications

References 47 publications

Changes in the Magnitude of the Individual and Combined Effects of Contaminants, Warming, and Predators on Tropical Cladocerans across 11 Generations

Changes in the Magnitude of the Individual and Combined Effects of Contaminants, Warming, and Predators on Tropical Cladocerans across 11 Generations

Transgenerational exposure to marine heatwaves ameliorates the lethal effect on tropical copepods regardless of predation stress

Density effects on a tropical copepodAcartiasp.: implications as live feed in aquaculture

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