Studies on the Effects of Silver Carp (Hypophthalmichthys molitrix) on the Phytoplankton in a Shallow Hypereutrophic Lake through an Enclosure Experiment

Hailong, Tang; Xie, Ping; Lü, Min; Xie, Lin; Wang, Jian

doi:10.1002/1522-2632(200201)87:1<107::aid-iroh107>3.0.co;2-j

Cited by 18 publications

(12 citation statements)

References 27 publications

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“…Therefore, it is less likely that food resources will be limiting in these rivers due to their high productivity. Previous research in other systems has demonstrated bighead and silver carp can alter and reduce crustacean zooplankton abundance (Kajak et al 1977;Lewkowicz and Lawkowicz 1991;Domaizon and Devaux 1999;Tang et al 2002). We found a significant negative relation between cladoceran density and Asian carp CPUE.…”

Section: Discussionsupporting

confidence: 49%

“…Both species are planktonic filter-feeders, consuming algae and zooplankton (Cremer and Smitherman 1980;Burke et al 1986;Miura 1990;Dong and Li 1994;Xie 1999Xie , 2001. The description of the diet of bighead and silver carp, and diet overlap with native filter-feeding fishes in North American ecosystems is limited; however, previous studies in ponds and enclosures indicate bighead and silver carp can alter zooplankton communities (Lewkowicz and Lawkowicz 1991;Dong and Li 1994;Radke and Kahl 2002;Tang et al 2002) and feed on similar prey items as native filterfeeding fishes of the UMRS (Kajak et al 1977;Opuszynski 1981;Lewkowicz and Lawkowicz 1991;Dong and Li 1994;Lu et al 2002;Radke and Kahl 2002).…”

Section: Introductionmentioning

confidence: 99%

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Diet overlap among two Asian carp and three native fishes in backwater lakes on the Illinois and Mississippi rivers

2008

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Bighead and silver carp are well established in the Mississippi River basin following their accidental introduction in the 1980s. Referred to collectively as Asian carp, these species are filter feeders consuming phytoplankton and zooplankton. We examined diet overlap and electivity of Asian carp and three native filter feeding fishes, bigmouth buffalo, gizzard shad, and paddlefish, in backwater lakes of the Illinois and Mississippi rivers. Rotifers, Keratella spp., Brachionus spp., and Trichocerca spp., were the most common prey items consumed by Asian carp and gizzard shad, whereas crustacean zooplankton were the preferred prey of paddlefish. Bigmouth buffalo diet was broad, including both rotifers and crustacean zooplankton. Dietary overlap with Asian carp was greatest for gizzard shad followed by bigmouth buffalo, but we found little diet overlap for paddlefish. Diet similarity based on taxonomy correlated strongly with diet similarity based on size suggesting filtration efficiency influenced the overlap patterns we observed. Although rotifers were the most common prey item consumed by both bighead and silver carp, we found a negative relation between silver carp CPUE and cladoceran density. The competitive effect of Asian carp on native fishes may be forestalled because of the high productivity of Illinois and Mississippi river habitats, yet the potential for negative consequences of Asian carp in less productive ecosystems, including Lake Michigan, should not be underestimated.

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Section: Discussionsupporting

confidence: 49%

Section: Introductionmentioning

confidence: 99%

Diet overlap among two Asian carp and three native fishes in backwater lakes on the Illinois and Mississippi rivers

2008

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“…Rather, most studies have focused on their growth in aquaculture ponds (e.g., Burke et al, 1986;Hagiwara & Mitsch, 1994;Turker et al 2003) or other eutrophic systems (e.g. Opuszynski & Shireman, 1993a;Lu et al, 2002;Tang et al, 2002). Here, our primary objective was to determine how zooplankton and phytoplankton densities characteristic of eutrophic and oligotrophic conditions affect bighead carp growth (i.e., overall change in biomass).…”

Section: Introductionsupporting

confidence: 57%

Feeding at different plankton densities alters invasive bighead carp (Hypophthalmichthys nobilis) growth and zooplankton species composition

2009

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Invasive Asian carps Hypophthalmichthys spp. are an ecological threat to non-native aquatic ecosystems throughout the world, and are poised to enter the Laurentian Great Lakes. Little is known about how these filter-feeding planktivores grow and impact zooplankton communities in mesotrophic to oligotrophic systems like the Great Lakes. Our purpose was to determine how different plankton densities affect bighead carp H. nobilis biomass and how bighead carp affect zooplankton species composition. We conducted a 37-day indoor mesocosm experiment (volume = 678 l) with high and low plankton treatments (zooplankton dry mass & 1,900 and 700 lg l -1 ; chlorophyll a = 25 and 14 lg l -1 , respectively) in the presence and absence of juvenile bighead carp (mean = 5.0 g, 8.5 cm). Carp lost weight in the low plankton treatment and gained weight in the high plankton treatment, suggesting that food availability may be a limiting factor to bighead carp growth in regions of low plankton densities. In the presence of carp, zooplankton shifted from Daphnia to copepod dominance, while in the absence of carp, Daphnia remained dominant. Chydorids and ostracods increased in the presence of carp, but only in the low plankton treatment, suggesting that the impact of bighead carp on zooplankton species composition may vary with zooplankton density. Chlorophyll was higher in the absence of carp than in the presence. Chlorophyll and zooplankton densities in many Great Lakes ecosystems are substantially lower than our low treatment conditions, and thus our results suggest that Asian carp establishment in these regions may be unlikely.

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“…Therefore, it is an essential task in pond management to regulate the water quality through controlling excessive phytoplankton (Burke et al 1986;Boyd and Tucker 1998). Many researchers have tried to control phytoplankton by using filter-feeding fish (Kajak et al 1975;Starling and Rocha 1990;Diana et al 1991a;Ruan et al 1993;Starling 1993;Tang et al 2002). The results of the present study showed that the zooplankton refuge in tilapia pond not only decreased the phytoplankton biomass, but also increased the phytoplankton diversity ( Fig.…”

Section: Discussionmentioning

confidence: 99%

Effects of zooplankton refuge on the growth of tilapia (Oreochromis niloticus) and plankton dynamics in pond

et al. 2009

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Effects of zooplankton refuge on the growth of tilapia (Oreochromis niloticus) and plankton dynamics in pond were assessed by using 12 land-based experimental enclosures (7 m9 4 m) in a saline-alkaline pond. There were 4 treatments resulting from a combination of 2 stocking densities of tilapia (5 and 10 kg per enclosure) and 2 enclosure types (refuge and nonrefuge). Each treatment had three replicates. In the enclosures with refuge, all fish were excluded from a water column of the enclosure's size with a polyethylene net (1.5 cm mesh size). Our field experiment showed that the individual gain in weight of tilapia increased 6.4 times with refuge treatment at the stocking density of 5 kg per enclosure than that in nonrefuge treatment. But at the stocking density of 10 kg per enclosure, the individual fish weight in all enclosures decreased due to the excessive density of fish stocking. Our results also showed that the refuge significantly increased the rotifer biomass and phytoplankton diversity and decreased the phytoplankton biomass (P \ 0.05), but the copepod biomass was not affected by the refuge.

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Studies on the Effects of Silver Carp (Hypophthalmichthys molitrix) on the Phytoplankton in a Shallow Hypereutrophic Lake through an Enclosure Experiment

Cited by 18 publications

References 27 publications

Diet overlap among two Asian carp and three native fishes in backwater lakes on the Illinois and Mississippi rivers

Diet overlap among two Asian carp and three native fishes in backwater lakes on the Illinois and Mississippi rivers

Feeding at different plankton densities alters invasive bighead carp (Hypophthalmichthys nobilis) growth and zooplankton species composition

Effects of zooplankton refuge on the growth of tilapia (Oreochromis niloticus) and plankton dynamics in pond

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