Comparative Studies on Effects of Predation by Fish on Daphnia in Lake Donghu (China) and Loch Leven (Scotland)

Yang, Yuyin; May, L.; Gunn, Iain; Huang, Xiang-Fei; Liu, J.

doi:10.4027/eafm.1999.21

Cited by 3 publications

(5 citation statements)

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“…Zooplankton data were mainly collected from past and present studies (Chen 1965; Chiang 1965; Shen & Chen 1965; Huang et al. 1984; Gong 1986; Li & Huang 1992; Yang, Chen & Huang 1995; Zhuge & Huang 1995; Yang et al. 1999a; 1999b).…”

Section: Data Sourcesmentioning

confidence: 99%

“…Huang et al. (1984) and Yang et al. (1995, 1999a, 1999b) found these to be important prey items in the diet of silver carp and bighead carp from Lake Donghu.…”

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confidence: 99%

“…The dominant Copepoda shifted from Mesocyclops leuckarti (Claus) in 1980 to Cyclops vicinus (Uljanin) in 1990 and 1995 (Chiang 1965; Huang et al. 1984; Liu 1984, 1990; Gong 1986; Yang et al. 1995, 1999a; 1999b; Zhuge & Huang 1995).…”

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confidence: 99%

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Effects of fish stocking on the zooplankton community structure in a shallow lake in China

Yang¹,

Huang²,

Liu³

et al. 2005

Fisheries Management Eco

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Changes in the zooplankton community structure in relation to fishery practices in Lake Donghu, Wuhan, China were examined. The number of Protozoa species increased slightly, whereas the number of rotifers and crustaceans decreased from the 1960s to the 1990s. The total annual average densities of zooplankton increased 15-20 times in the 1990s compared with the 1960s. This increase was largely attributed to Protozoa, which contributed 93.4% by number of the total zooplankton density in 1991. Cladoceran densities decreased markedly from 1987. Changes in densities of rotifers and copepods were not evident. Trends in zooplankton biomass were similar to density. Large changes in zooplankton community structure coincided with markedly changes in concentration of chlorophyll a and transparency in Lake Donghu in 1987. The year 1987 seems to be the threshold year when the zooplankton community structure changed considerably. These changes were related to continuously increasing fish stock biomass in the lake. It was suggested that fish stocking and fish biomass should be a better managed for improvement of the quality of the lake's environment. K E Y W O R D S : culture-based fishery, fisheries management, Lake Donghu, stocking, zooplankton.

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Section: Data Sourcesmentioning

confidence: 99%

“…Huang et al. (1984) and Yang et al. (1995, 1999a, 1999b) found these to be important prey items in the diet of silver carp and bighead carp from Lake Donghu.…”

mentioning

confidence: 99%

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Effects of fish stocking on the zooplankton community structure in a shallow lake in China

Yang¹,

Huang²,

Liu³

et al. 2005

Fisheries Management Eco

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“…Although detailed information on prey availability is not available for the two study periods, it is known that chironomids were present in Loch Leven in high numbers in the late 1960s, which may explain their dominance in the diet of trout at the time. In a separate study, Yang et al (1999) showed that the densities and size frequency of the Daphnia population in Loch Leven changed little over the period 1992-95, suggesting that stocking with rainbow trout which began in 1993 was less important than other factors, such as food resources and water temperature, in controlling Daphnia numbers at that time. Overall, improvements in water quality seem to have resulted in a general decline in crustacean zooplankton abundance coupled with a small increase in species diversity over the period of restoration.…”

Section: Discussionmentioning

confidence: 99%

Long-term trends in Loch Leven invertebrate communities

Gunn

O’Hare

Maitland³

et al. 2011

Hydrobiologia

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Contact CEH NORA team at noraceh@ceh.ac.ukThe NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. This paper has not been submitted elsewhere in identical or similar form, nor will it be during the first three months after its submission to Hydrobiologia. 2 AbstractDetailed studies of the macroinvertebrate benthos and zooplankton communities in Loch Leven, the largest shallow lowland lake in Scotland, UK, were carried out from 1966 to 1973 as part of the International Biological Programme (IBP). The results revealed a reduction in species diversity that was attributed to increasing eutrophication. This work provides a baseline against which the response of the invertebrate communities to subsequent changes in management can be assessed. This paper compares macroinvertebrate benthos and zooplankton data from the IBP study with the post-IBP era during which changes at Loch Leven included a 60% reduction in the phosphorus input from external sources and variations in fish stocking rates. Only in recent years has there been evidence of ecological recovery by the invertebrate communities: the number of macroinvertebrate and zooplankton taxa has increased (including taxa considered to be sensitive to nutrient enrichment) and invertebrate abundances have declined. These changes appear to reflect the improvements in water quality and habitat conditions at Loch Leven that have occurred as a result of the recent reduction in nutrient loads, albeit with a substantial delay before any ecological response could be detected. This time lag in recovery has important implications for assessing improvements in the ecological status of other lake systems, as is required by the EU Water Framework Directive.3

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“…The stocked fish reduced the density of Daphnia from 26.1–35.0 ind./L in 1971–1986 to 0.5–1.3 ind./L in 1987–1996. Moreover, the annual average body length of important prey of silver and bighead carp decreased over this period - from 1.22 mm (1980) to 0.65 mm (1988) in the case of Daphnia hyalina , from 1.33 mm (1980) to 0.78 mm (1987) for Daphnia carinata , and from 0.81 mm to 0.61 mm (1992) for Daphnia brachyurum [ 84 – 88 ]. A decrease in the densities of Daphnia , rotifers, and protozoans relaxed the competition among small zooplankton, leading to an increase in protozoan biomass [ 82 ].…”

Section: Discussionmentioning

confidence: 99%

Eco-evolution in size-structured ecosystems: simulation case study of rapid morphological changes in alewife

Kang

Thibert-Plante

2017

BMC Evol Biol

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BackgroundOver the last 300 years, interactions between alewives and zooplankton communities in several lakes in the U.S. have caused the alewives’ morphology to transition rapidly from anadromous to landlocked. Lakes with landlocked alewives contain smaller-bodied zooplankton than those without alewives. Landlocked adult alewives display smaller body sizes, narrower gapes, smaller inter-gill-raker spacings, reach maturity at an earlier age, and are less fecund than anadromous alewives. Additionally, landlocked alewives consume pelagic prey exclusively throughout their lives whereas anadromous alewives make an ontogenetic transition from pelagic to littoral prey. These rapid, well-documented changes in the alewives’ morphology provide important insights into the morphological evolution of fish.Predicting the morphological evolution of fish is crucial for fisheries and ecosystem management, but the involvement of multiple trophic interactions make predictions difficult. To obtain an improved understanding of rapid morphological change in fish, we developed an individual-based model that simulated rapid changes in the body size and gill-raker count of a fish species in a hypothetical, size-structured prey community. Model parameter values were based mainly on data from empirical studies on alewives. We adopted a functional trait approach; consequently, the model explicitly describes the relationships between prey body size, alewife body size, and alewife gill-raker count. We sought to answer two questions: (1) How does the impact of alewife populations on prey feed back to impact alewife size and gill raker number under several alternative scenarios? (2) Will the trajectory of the landlocked alewives’ morphological evolution change after 150–300 years in freshwater?ResultsOver the first 250 years, the alewives’ numbers of gill-rakers only increased when reductions in their body size substantially improved their ability to forage for small prey. Additionally, alewives’ gill-raker counts increased more rapidly as the adverse effects of narrow gill-raker spacings on foraging for large prey were made less severe. For the first 150–250 years, alewives’ growth decreased monotonically, and their gill-raker number increased monotonically. After the first 150–250 years, however, the alewives exhibited multiple evolutionary morphological trajectories in different trophic settings. In several of these settings, their evolutionary trajectories even reversed after the first 150–250 years.ConclusionsAlewives affected the abundance and morphology of their prey, which in turn changed the abundance and morphology of the alewives. Complex low-trophic-level interactions can alter the abundance and characteristics of alewives. This study suggests that the current morphology of recently (∼300 years)-landlocked alewives may not represent an evolutionarily stable state.Electronic supplementary materialThe online version of this article (doi:10.1186/s12862-017-0912-4) contains supplementary material, which is available to authorized users.

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Comparative Studies on Effects of Predation by Fish on Daphnia in Lake Donghu (China) and Loch Leven (Scotland)

Cited by 3 publications

References 0 publications

Effects of fish stocking on the zooplankton community structure in a shallow lake in China

Effects of fish stocking on the zooplankton community structure in a shallow lake in China

Long-term trends in Loch Leven invertebrate communities

Eco-evolution in size-structured ecosystems: simulation case study of rapid morphological changes in alewife

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