Feeding, growth and bioluminescence of the heterotrophic dinoflagellate Protoperidinium huberi

Buskey, Edward J.; Coulter, C. J.; Brown, S. L.

doi:10.1007/bf00346747

Cited by 52 publications

(39 citation statements)

References 39 publications

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“…In contrast, we were able to reveal that O. marina exhibits a threshold prey level, where growth is zero. Such a threshold level for heterotrophic dinoflagellates (to which O. marina is related: Lowe et al 2005) is well supported in the literature, with values typically ranging from 10 to 10 3 µg C l -1 (Jacobson 1987, Bjørnsen & Kuparinen 1991, Strom 1991, Hansen 1992, Strom & Buskey 1993, Buskey et al 1994, Jeong & Latz 1994, Jakobsen & Hansen 1997. Threshold levels can be used to assess whether conditions are adequate to allow a predator to survive; our data suggest that O. marina can survive at relatively low prey levels (1 to 80 µg C l -1 ).…”

Section: Prey Concentrationsupporting

confidence: 79%

Do temperaturefood interactions matter? Responses of production and its components in the model heterotrophic flagellate Oxyrrhis marina

Kimmance¹,

Atkinson²,

Montagnes³

2006

Aquat. Microb. Ecol.

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The consequence of interactions between temperature and food concentration for protistan population dynamics and estimates of aquatic productivity are relatively unknown, primarily because we lack adequate parameters for models. Here, using the heterotrophic flagellate Oxyrrhis marina Dujardin, we demonstrate the importance of considering temperature and food concentration in combination, to determine the responses of grazing rate, specific growth rate, cell volume, specific production and yield. Specific growth rate and cell volume responded in different ways to temperature-food concentrations: prey concentration had greatest positive effects on specific growth rate with increasing temperature, and prey concentration had greatest positive effects on cell volume with decreasing temperature. The effect of these contrasting interactions on specific production (= specific growth rate × cell carbon) was a greater response to prey concentration at intermediate temperatures.We also observed that the threshold food concentration for growth increased with increasing temperature, but yield showed no clear thermal response. By applying iterative curve-fitting to data obtained from multiple temperature-food concentration combinations, we produced phenomenological models of grazing rate, specific growth rate, and cell volume. We then compared predictions from a simple predator-prey simulation model that applied either our derived equations or a single exponential (Q 10 ) relationship to the specific growth and ingestion responses at 20°C. Considerable differences in predator and prey abundance were obtained between the 2 models. Our results demonstrate the potentially complex effects of food and temperature in combination on production parameters, and we argue that these should be considered in aquatic ecosystem simulation models.

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Section: Prey Concentrationsupporting

confidence: 79%

Do temperaturefood interactions matter? Responses of production and its components in the model heterotrophic flagellate Oxyrrhis marina

Kimmance¹,

Atkinson²,

Montagnes³

2006

Aquat. Microb. Ecol.

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“…Variability Data source for, nano/microflagellates: Kopylov et al 1980;Fenchel 1982;Sherr et al 1983;Stoccker and Evans 1985;Caron et al 1986;Borsheim and Bratbak 1987;Geider and Leadbetter 1988;Caron 1990;Caron et al 1990a;Grover 1990;Caron et al 199 1;Holen and Boraa:;Hochstadter 1993;Gonzales et al 1994;Nakano 1994;Jtirgens 1995. Data source for dinoflagellates : Strom 1991;Hansen 1992;Nakamura et al 1992;Strom and Buskey 1993;Buskey et al 1994. Data source for ciliates: Rubin and Lee 1976;Rassoulzadegan 1982;Scott 1985;Taniguchi and Kawakami 1985;Verity 1985;Jonsson 1986;Stoecker and Evans 1986;Turley et al 1986;Caron et al 1991;Mtiller 1991;Ohman and Snyder 1991;Hochstadter 1993.…”

Section: Resultsmentioning

confidence: 99%

Gross growth efficiencies of protozoan and metazoan zooplankton and their dependence on food concentration, predator‐prey weight ratio, and taxonomic group

Straile

1997

Limnology & Oceanography

378

258

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A comprehensive datasct on the gross growth efficiency (GGE) of planktonic protozoans and metazoans was gathered from the literature in order to (1) identify typical ranges of values, (2) to reexamine the taxon specificity of GGE, and (3) to evaluate the impact of food concentration, predator-prey weight ratio, and temperature on GGE. All taxa (i.e. nano/microAagellates, dinoflagellates, ciliates, rotifers, cladocerans, and copepods) were found to have mean and median GGE of -2O-30%. Contrary to the common practice of using different values of GGE for ciliates and crustaceans, I found that the GGE hardly differed between taxa. Variability within all taxa was high and could only partially be attributed to the independent variables mentioned above. The dependency of GGE on food concentrations was the most reliable relationship identified by multiple regression. Establishing further generalizations regarding the dependency of GGE on other factors was hampered by methodological differences among studies and taxa and the lack of information on other potentially important factors such as the clemental composition of prey items. Future studies of GGE should recognize the importance of these factors.Knowledge of fluxes of matter and energy within ecosystems is a prerequisite for the understanding of food web regulation and of the role that oceans and lakes play in the global carbon cycle (Longhurst 199 1). However, quantifying carbon fluxes reliably in particular ecosystems is hampered by many difficulties. The complexity of aquatic food webs outpaces our capacity to make all the necessary measurements at any one site (Vkzina and Platt 1988). This fact forces ecologists to infer unknown fluxes from those that have been measured. A relative straightforward and therefore common approach is to estimate ingestion rates, Z, of a group of organisms (of a guild) from measured growth rates, G, and a fixed gross growth efficiency, GGE: Z = G/GGE. The crucial ratio GGE (G/Z) is the fraction of prey carbon consumed converted to predator carbon. Despite its importance and abundant use in numerous models and applied studies, e.g. on the estimation of fish yield, the literature on GGE is not well developed and provides no or only a few weak generalizations.Searching the literature of carbon flux modeling, one finds that one generalization in particular has reached modelers' ears: planktonic protozoans are thought to achieve higher GGE than do planktonic metazoans. Modelers are quite aware of high protozoan GGE (sensu Caron et al. 1990a) and usually use protozoan GGE 240% in their models. On the other hand, the conclusion of Calow (1977)-that "Metazoa can achive the best possible levels of efficiency pre- AcknowledgmentsThis study was performed within the Special Collaborative Program (SFB) 248 "Cycling of matter in Lake Constance" supported

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“…Applying a volume-to-carbon conversion, this corresponds to 70 µg C l -1 and 142 µg C l -1 for the growth threshold and the half-saturation constant, respectively. Growth thresholds of only 10 to 24 µg C l -1 have been reported for thecate heterotrophic dinoflagellates feeding on diatoms (Strom & Buskey 1993, Buskey et al 1994, Naustvoll 1998, which is approximately equivalent to the lower food limit of many ciliates (Jonsson 1986). For Diplopsalis lenticula growing on a diatom (Ditylum brightwellii), growth is half saturated at a food concentration of only 29 µg C l -1 (Naustvoll 1998).…”

Section: Discussionmentioning

confidence: 99%

Dinoflagellate grazing on the raphidophyte Fibrocapsa japonica

Tillmann

Reckermann²

2002

Aquat. Microb. Ecol.

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Laboratory experiments were performed to determine the growth and grazing capabilities of 2 heterotrophic dinoflagellates with different feeding modes (pallium feeder: Oblea rotunda; engulfment feeder: Oxyrrhis marina) when fed the raphidophyte Fibrocapsa japonica. Both dinoflagellates readily ingested prey and exhibited positive growth when feeding on monocultures of F. japonica. Maximum growth rates at food saturation were 0.54 and 0.72 d -1 for O. rotunda and O. marina, respectively. Both dinoflagellates are thus able to grow faster than their prey, for which a maximum growth rate of 0.45 d -1 has been previously reported. In the case of O. rotunda, it was found that a rather high food concentration of 300 F. japonica cells ml -1 (corresponding to 142 µg C l -1 ) was needed to sustain half-saturated growth. This is consistent with the quantification of behavioural aspects of the feeding process. In about 55% of cases, a failure to attach the tow filament after prey encounter was recorded, and in about 83% of cases, F. japonica was able to escape from the attached tow filament, indicating that motility of F. japonica is a quite effective defence mechanism against pallium-feeding dinoflagellates. In addition, qualitative observations suggest that trichocysts of F. japonica may act mechanically as a grazer deterrent.

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Feeding, growth and bioluminescence of the heterotrophic dinoflagellate Protoperidinium huberi

Cited by 52 publications

References 39 publications

Do temperaturefood interactions matter? Responses of production and its components in the model heterotrophic flagellate Oxyrrhis marina

Do temperaturefood interactions matter? Responses of production and its components in the model heterotrophic flagellate Oxyrrhis marina

Gross growth efficiencies of protozoan and metazoan zooplankton and their dependence on food concentration, predator‐prey weight ratio, and taxonomic group

Dinoflagellate grazing on the raphidophyte Fibrocapsa japonica

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Feeding, growth and bioluminescence of the heterotrophic dinoflagellate Protoperidinium huberi

Cited by 52 publications

References 39 publications

Do temperaturefood interactions matter? Responses of production and its components in the model heterotrophic flagellate Oxyrrhis marina

Do temperaturefood interactions matter? Responses of production and its components in the model heterotrophic flagellate Oxyrrhis marina

Gross growth efficiencies of protozoan and metazoan zooplankton and their dependence on food concentration, predator‐prey weight ratio, and taxonomic group

Dinoflagellate grazing on the raphidophyte Fibrocapsa japonica

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Do temperaturefood interactions matter? Responses of production and its components in the model heterotrophic flagellate Oxyrrhis marina

Do temperaturefood interactions matter? Responses of production and its components in the model heterotrophic flagellate Oxyrrhis marina