Effects of temperature on life history traits of Eodiaptomus japonicus (Copepoda: Calanoida) from Lake Biwa (Japan)

Liu, Xin; Beyrend-Dur, Delphine; Dur, Gaël; Ban, Syuhei

doi:10.1007/s10201-013-0417-9

Cited by 31 publications

(48 citation statements)

References 56 publications

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“…Embryonic development time and duration of the first naupliar stage (N1) of E. japonicus were not affected by FC, whereas they both depended on temperature as shown in previous studies (e.g. Landry, ), including ours under sufficient food supply (Liu et al ., ). Probably food shortage does not influence yolk investment in an egg, although reproductive investment decreased with decreasing food uptake (Guisande & Harris, ).…”

Section: Discussionmentioning

confidence: 99%

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Combined effects of temperature and food concentration on growth and reproduction of Eodiaptomus japonicus (Copepoda: Calanoida) from Lake Biwa (Japan)

et al. 2015

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Summary Life history traits of the freshwater calanoid copepod Eodiaptomus japonicus from Lake Biwa were examined in the laboratory. Four different food concentrations (FC, 103, 5 × 103, 104 and 5 × 104 cells mL−1) and two temperature conditions (15 and 25 °C) were used to clarify the combined effects of those two factors on life history traits. A survival rate of more than 70% was observed at the two medium FCs at 15 °C, although survival was <42% at all six of the other food–temperature combinations. Post‐embryonic development times to adult stage in males and females were affected by both FC and temperature; median development times ranged from 28.7 to 37.3 and 31.4 to 35.0 days at 15 °C and 13.7 to 23.9 and 14.3 to 27.7 days at 25 °C, respectively, for males and females. An interaction between the two experimental factors was found only for females, with food shortage being most acute at 25 °C. Clutch sizes also increased with FC at both temperatures and interaction occurred between those two factors. Egg production rates increased with increasing FC similarly at both temperatures without an interaction effect. Adult body size increased with increasing FC at both temperatures: for example, average female prosome length increased from 0.865 mm to 0.922 mm at 15 °C and from 0.799 mm to 0.904 mm at 25 °C. Somatic and population growth rates calculated from the experimental data increased with FC, but the increase was more important at 25 °C. These responses to FC and temperature suggest that both growth and population dynamics of this copepod might be more influenced by food shortage at temperatures >15 °C. Adult body sizes under food‐limited conditions in this study are at the lower end of the range of those observed in situ, while those predicted from in situ temperatures, assuming non‐limiting food conditions, were always larger than those of natural populations. Therefore, food shortage appears to be the most important factor affecting both growth and reproduction of E. japonicus in Lake Biwa.

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Section: Discussionmentioning

confidence: 99%

“…Recently, Liu et al . () determined the effects of temperature on the life history traits of E. japonicus under sufficient food supply. The authors suggested that this copepod was warm‐water adapted and did not grow below 10 °C during winter, even with sufficient food supply.…”

Section: Introductionmentioning

confidence: 97%

Combined effects of temperature and food concentration on growth and reproduction of Eodiaptomus japonicus (Copepoda: Calanoida) from Lake Biwa (Japan)

et al. 2015

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“…This dominance might be attributed to the warm‐adapted characteristic of this copepod (Liu and Ban , ). Liu et al () demonstrated that the E. japonicus population could not grow below 10°C, which was the lake water temperature during winter and showed that increasing water temperature due to global warming in Lake Biwa might improve the winter environment for this copepod's population growth.…”

Section: Discussionmentioning

confidence: 99%

“…This work was supported by grants from the Ministry of Agriculture, Forestry and Fisheries, Japan, for a research project entitled Development of technologies for mitigation and adaptation to climate change in Agriculture, Forestry and Fisheries , and from Grants‐in‐Aid for Scientific Research (18H03961) from the Japan Society for the Promotion of Science (JSPS), to S. Ban. The Japan Student Services Organization provided a Japanese government scholarship to X. Liu (−2016), and G. Dur was supported by a JSPS postdoctoral long‐term fellowship. This work is a contribution to the FASCICLE project of the French BioAsia program.…”

Section: Acknowledgmentsmentioning

confidence: 99%

“…Zooplankton population growth fundamentally depends on temperature (Jiménez‐Melero et al ; Liu et al ; Tordesillas et al ) and food availability (Kiørboe et al ; Ban ; Liu et al ), because these two factors play a key role in regulating metabolism in poikilotherms (Kiørboe et al ; Brown et al ); however, many studies have demonstrated that visually oriented predation might affect a zooplankton community, and, consequently, reduce its biomass (Jeppesen et al ; Verheye et al ; Daskalov ) and body size distribution (Brooks and Dodson ; Rettig ; Hambright ). Predation pressure on large zooplankton strongly affects the zooplankton−phytoplankton biomass ratio in both oligotrophic and eutrophic lakes (Jeppesen et al , ).…”

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Planktivorous fish predation masks anthropogenic disturbances on decadal trends in zooplankton biomass and body size structure in Lake Biwa, Japan

Liu

Dur

Ban

et al. 2019

Limnology & Oceanography

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Pelagic zooplankton samples from Lake Biwa, Japan, collected monthly since 1971, were analyzed for biomass and body size structure. Our aim was to clarify the relative effects of food availability and global warming vs. top‐down control by fish predation on long‐term trends. Annual mean biomass and density‐weighted body size were calculated and compared with water temperature, total phosphorus (TP), as a proxy of food amount, and catch per unit effort (CPUE) of Ayu (Plecoglossus altivelis altivelis), as a proxy of planktivorous fish predation pressure. Mean water temperature above 20 m increased by 0.94°C. TP increased until 1974 and then decreased until 1985, becoming stable after that. Ayu CPUE increased until 1987 and then declined. The study period can be divided into two nutritional phases: a high TP phase (1971–1985) and a low‐stable TP phase (1986–2010). Five zooplankton taxa, Eodiaptomus japonicus, Cyclopoida spp., Daphnia spp., Bosmina longirostris, and Diaphanosoma orientalis, were continuously dominant. Annual mean total crustacean biomass varied from 0.3 to 3.6 g dry weight m−2, slightly decreasing until 1993 but increasing thereafter. Generalized linear models showed that annual mean body sizes were affected by temperature and CPUE, whereas annual mean biomass was affected by TP and CPUE. These had no effect during the high TP phase, whereas only CPUE affected both traits during the low‐stable TP phase. We concluded that zooplankton biomass and body size long‐term trends were mostly influenced by fish predation and that eutrophication and global warming impacts might be affected by top‐down control.

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Quasi‐decadal periodicities in growth and production of the copepod Eodiaptomus japonicus in Lake Biwa, Japan, related to the Arctic Oscillation

Liu

Dur

Ban

et al. 2021

Limnology & Oceanography

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Copepods are important secondary producers that support higher trophic levels in aquatic food webs. Large-scale climate events such as climate oscillations and global warming force on physical and chemical conditions in aquatic ecosystems might regulate copepod production through physiological and biochemical processes. We evaluated how large climatic and anthropogenic events impacted secondary production of copepods in Lake Biwa, the largest lake in Japan. We determined demographic traits such as body size, growth rate, biomass and production of the dominant copepod Eodiaptomus japonicus in this lake over four decades . To evaluate in situ food conditions and estimate growth and production for this omnivorous species, we firstly defined a size-based food index (f), that is the ratio of in situ body size to ideal body size in adult females. Values of f were mostly < 1 even during eutrophication (1970s to the early 1980s), suggesting that this copepod continuously suffered from a food shortage in this lake. Quasi-decadal periodicities were detected in f, growth and production (but not biomass) for this copepod throughout the study period. These periodicities were correlated with the Arctic Oscillation, implying that long-term trends in climate could regulate copepod food availability and production. This correlation weakened after 1990, which might be due to a regime shift in lake water temperature, which increased abruptly in the mid-1980s. Global warming might now be disrupting historical quasi-decadal periodicity in growth and production of copepods in Lake Biwa.

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Effects of temperature on life history traits of Eodiaptomus japonicus (Copepoda: Calanoida) from Lake Biwa (Japan)

Cited by 31 publications

References 56 publications

Combined effects of temperature and food concentration on growth and reproduction of Eodiaptomus japonicus (Copepoda: Calanoida) from Lake Biwa (Japan)

Combined effects of temperature and food concentration on growth and reproduction of Eodiaptomus japonicus (Copepoda: Calanoida) from Lake Biwa (Japan)

Planktivorous fish predation masks anthropogenic disturbances on decadal trends in zooplankton biomass and body size structure in Lake Biwa, Japan

Quasi‐decadal periodicities in growth and production of the copepod Eodiaptomus japonicus in Lake Biwa, Japan, related to the Arctic Oscillation

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