The influence of autotrophic and heterotrophic foods on the demography of Daphnia longispina under starved, semi-natural and enriched conditions

Picard, Virginie; Lair, Nicole

doi:10.1093/plankt/22.10.1925

Cited by 17 publications

(12 citation statements)

References 49 publications

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“…The present results are in consistent with observations made earlier by PICARD and LAIR, (2000) on Daphnia. Earlier studies have reported a decreased metabolic rate of adult Daphnia pulicaria (STUCHLÍKOVÁ, 1991) and developing embryos of Ceriodaphnia pulchella (BOERSMA, 1995) under food limited conditions, which might lead to decreased carbon loss.…”

Section: Discussionsupporting

confidence: 94%

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Ontogenetic Shifts in the Ability of the Cladoceran, Moina macrocopa Straus and Ceriodaphnia cornuta Sars to Utilize Ciliated Protists as Food Source

Kumar

Hwang

2008

International Review of Hydrobiology

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The ontogenetic diet shifts and age specific ability of the two cladoceran species Moina macrocopa and Ceriodaphnia cornuta to derive energy from ciliated protists have been investigated in laboratory. The postembryonic developmental rates and life table demography (longevity, age and size at first reproduction, fecundity and intrinsic rate of natural increase) of the cladocerans have been elucidated on algae (Chlorella vulgaris) and the ciliated protists (Tetrahymena pyriformis, Colpoda (c.f.) steini) as food. For either of the cladoceran, the somatic growth rate and average body size at first reproduction were higher with algal diet. During initial stages of development (0-5 days), either cladoceran realized higher rate of somatic growth on algal diet, subsequently ciliated protists supported significantly higher growth rate than the alga. Algal and ciliate diets did not differ in maximum body size (C. cornuta: 539-554 μm; M. macrocopa: 1274.8-1309 μm) reached by either of the cladocerans. The maximum body sizes were larger than size at first reproduction with either of the ciliated protists, however, with algal diet the maximum body sizes did not differ from the size at first reproduction in each case. In case of C. cornuta the generation time (20.5 ± 0.3 days on ciliate; 15.6 ± 0.17 days on algal diet), reproductive rates (net reproductive rate: 20.05 ± 3.2 on ciliate; 15.5 ± 1.2 on algal diet), and average life expectancy at hatching (27 ± 0.8 days on ciliate; 22.7 ± 0.71 days on alga) were higher, whereas the size at first reproduction (482 μm on ciliate; 521 μm on alga) was smaller with the ciliate than with an algal diet. The algal and the ciliate diets did not differ in survival (life expectancy at hatching: 9.2 ± 0.7 days) and fecundity (NRR: 23.6 ± 2.4) for M. macrocopa. The two ciliates used in the experiment did not differ in their performance as food source for either cladoceran species. Our results suggest that both the cladoceran species are able to utilize smaller ciliate (e.g., T. pyriformis, C. (c.f.) steini) as food; however with differential ability to derive energy from the ciliate diet and this ability is size and age structured in both cases.

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Section: Discussionsupporting

confidence: 94%

“…The dissolved organic matter (DOC) may have supported limited somatic growth and production of 2-3 clutches during lifetime. The contribution of dissolved organic carbon to limited somatic growth and clutch production has been reported earlier (VREDE, 1998;PICARD and LAIR, 2000).…”

Section: Discussionmentioning

confidence: 68%

Ontogenetic Shifts in the Ability of the Cladoceran, Moina macrocopa Straus and Ceriodaphnia cornuta Sars to Utilize Ciliated Protists as Food Source

Kumar

Hwang

2008

International Review of Hydrobiology

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“…(1) Some zooplankton taxa not only feed on algae but also on bacteria, protozoans and detrital matter (Bec et al 2003b;Zöllner et al 2003;Hall et al 2004). This is probably true when phytoplankton production is low or when the nutritional quality of phytoplankton is poor (Adrian and Schneider-Olt 1999;Picard and Lair 2000;Hall et al 2004). …”

Section: Zooplanktonmentioning

confidence: 99%

Influence of food web structure on the biochemical composition of seston, zooplankton and recently deposited sediment in experimental freshwater mesocosms

et al. 2010

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The effects of food web structure on the quantity and biochemical composition of seston, zooplankton and recently deposited sediment in experimental freshwater mesocosms were examined. Food web structure was manipulated by addition of zooplanktivorous fish. Biochemical characterisations were carried out using lipid biomarkers (sterols, fatty acids, chlorophyll-derived compounds and long-chain alkanediols). Fish addition decreased zooplankton biomass and increased seston biomass and deposited sediment through a trophic cascade. Fish presence strongly influenced the biochemical characteristics of seston and sediment. In contrast, food web structure had a minor impact on the lipid biomarker composition of zooplankton. Although the relative abundance of sterols in the different compartments did not differ strongly between treatments, sterol profiles in seston and sediment depended on food web structure. The predominance of D 7 -sterols in seston and sediment in the fish treatment indicated a major contribution of Chlorophyceae. In contrast, the distribution of sterols in seston and sediment in the fishless treatment, dominated by cholesterol, indicated a major zooplanktonic input. The distribution of fatty acids and the relative abundance of chlorophyll-derived compounds and long-chain alkanediols agreed with the predominant contribution of phytoplankton or zooplankton to seston and sediment in the two treatments. The relative abundance of bacterial biomarkers suggested that the contribution of bacteria was rather low. The high relative abundance of polyunsaturated fatty acids (PUFAs) and the absence of stanols in sediments suggested low microbial reworking of organic matter in the recently accumulated sediments. The trophic cascade, generated by the addition of fish, increased the relative abundance of PUFAs in deposited organic matter, thus enhancing sediment quality and potential degradability.

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“…In the Spree River, Welker and Walz (1998) observed that below a lake outlet the growth rates of potamoplankton declined to low levels while birth rates remained nearly constant and similar to those in the lake itself. Actually, thanks to reserves, the production of eggs is still possible despite several days of starvation, as observed in limnetic cladocerans (Picard and Lair, 2000), and heavier individuals are washed out more easily (Richardson, 1992). With basic equations describing community development, longitudinal river transportation and inputs from inflows, modelling has also been used as an accurate and global descriptor (Garnier et al, 1995;Holst et al, 2002;Schöl et al, 2002).…”

Section: A Challenge For Potamoplankton: Eat To Be Fruitful and Multiplymentioning

confidence: 99%

A review of regulation mechanisms of metazoan plankton in riverine ecosystems: aquatic habitat versus biota

2006

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This review summarizes the key factors of a series of articles about animal plankton in rivers, a topic that remains poorly investigated. Running water, in which sampling processes are variable and often difficult, acts as a constraint as well as a resource for plankton. Assessment of the potamoplankton reveals that good swimmers of the true plankton are mixed with numerous poor swimmers among littoral and epibenthic forms. Small taxa dominate communities in most of rivers all over the world and, in comparison with crustaceans; the successful development of rotifers rests on their shorter development times. According to hydraulic and geomorphological features, the diversity of the habitats and the ability of individuals to avoid washout was examined, decrease in flow creating standing zones favourable to zooplankton development. Many species can find suitable conditions for the development of dense populations in stream habitats and examples of taxa-specific response, regardless of the habitat structure, are observed. While the challenge for riverine plankton remains 'eat to be fruitful and multiply', their activities have been poorly investigated in turbulent conditions, those able to continue growing in a current of 20 cm s À1, such as brachionid species, being usually dominant in rivers. Examination of the distribution of plankton populations, in the Middle Loire and in other rivers, showed that the flow regime, which plays a central role in organizing river habitats, explains the presence/absence of these fast-growing organisms. While reservoirs are major sources of crustaceans, lateral exchanges as well as downstream transport are important in determining the plankton. These ecosystems are primarily governed by abiotic factors, biological control taking place after physical control has happened. Because animals arrive by chance in any habitat during dispersion, zooplankton in rivers remains primarily governed by unpredictable physical processes and depends on the age of the water and the availability of habitats. In this way, the hydro-dynamics of river habitats need to be more documented with regard to their key role in the planktonic life. Preservation of the lentic areas remaining at the heart of the matter, the contrasting ecology of the rotifers should be a reliable tool with which to estimate the changes in habitats diversity of main channels, particularly during droughts, while crustacean's diversity would be more representative of flood plain annexes, particularly during flood events.

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The influence of autotrophic and heterotrophic foods on the demography of Daphnia longispina under starved, semi-natural and enriched conditions

Cited by 17 publications

References 49 publications

Ontogenetic Shifts in the Ability of the Cladoceran, Moina macrocopa Straus and Ceriodaphnia cornuta Sars to Utilize Ciliated Protists as Food Source

Ontogenetic Shifts in the Ability of the Cladoceran, Moina macrocopa Straus and Ceriodaphnia cornuta Sars to Utilize Ciliated Protists as Food Source

Influence of food web structure on the biochemical composition of seston, zooplankton and recently deposited sediment in experimental freshwater mesocosms

A review of regulation mechanisms of metazoan plankton in riverine ecosystems: aquatic habitat versus biota

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