Food-Limited Growth of Marine Zooplankton

Huntley, Mark E.; Boyd, Carl M.

doi:10.1086/284288

Cited by 209 publications

(121 citation statements)

References 47 publications

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“…However, a weak relationship (R 2 = 0.43) was found between the same variables for T. crassus. Such variations are typically attributed to temperature and varying food concentrations and food quality (Huntley and Boyd, 1984). Gaudy and Verriopoulos (2004) declared that egg production was inversely related to temperature.…”

Section: Discussionmentioning

confidence: 99%

Seasonal variations in body length and fecundity of 2 copepod species: Thermocyclops crassus (Fischer, 1853) and Eudiaptomus drieschi (Poppe & Mrázek, 1895)

Bozkurt¹,

Can²

2014

Turk J Zool

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This paper considers exact solutions of unsteady free convection flow with thermal radiation past a vertical porous plate with Newtonian heating. The technique of Laplace transform was employed in deriving the solutions to the governing flow and energy equations. A parametric study of all parameters involved was conducted, and a representative set of results showing the effect of the radiation parameter N , the ratio of uniform suction to characteristic velocity parameter R , and the free convection parameter Gr on the velocity and temperature are illustrated graphically. The skin friction or shear and heat flux are discussed quantitatively. It is evident that the results reveal the characteristics of the problem.

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Section: Discussionmentioning

confidence: 99%

Seasonal variations in body length and fecundity of 2 copepod species: Thermocyclops crassus (Fischer, 1853) and Eudiaptomus drieschi (Poppe & Mrázek, 1895)

Bozkurt¹,

Can²

2014

Turk J Zool

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“…protein, carbohydrate and FA) of Acartia tonsa varies in relation to the quantity of food available, and whether such variation could affect the chemical composition of its eggs. Huntley & Boyd (1984) suggested that zooplankton have a minimum maintenance food concentration, which is required to balance respiratory losses. Further more, the potential for a chemical substance to limit the growth of zooplankton varies as the demand for biochemical substances varies with food quantity (Sterner 1997).…”

Section: Introductionmentioning

confidence: 99%

Food availability effects on reproductive strategy: the case of Acartia tonsa (Copepoda: Calanoida)

Acheampong¹,

Campbell²,

Diekmann³

et al. 2011

Mar. Ecol. Prog. Ser.

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Food availability has been linked to changes in the biochemical composition of zooplankton eggs. However, a number of species are capable of resource storage and are thereby able to use accumulated reserves for reproduction during periods of poor food conditions. Conversely, in species such as Acartia tonsa with limited storage capacities, there can be a strong dependence of egg composition on ambient food conditions. The aim of this study was to determine the effect of food availability on the carbohydrate, protein and fatty acid composition of A. tonsa females and their eggs after being fed with different concentrations of the cryptophyte Rhodomonas baltica. During the experiments, no significant differences in the biochemical composition of females were observed, although egg protein composition was higher in food-limited females. We propose that the production of protein-rich eggs by food-limited copepods is a reproductive strategy for ensuring the survival of offspring during poor feeding conditions. In terms of their relative biochemical makeup, there were no significant differences between both adults and eggs of A. tonsa and their prey R. baltica. However, these biochemical similarities did not influence egg production. Rather, higher biochemical similarities were observed between R. baltica and eggs when females were food limited. These findings suggest that food-limited females may moderate the cost of reproduction by producing eggs without much modification to the substrates they ingest.

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“…The relation between temperature and feeding has been explored through compilations of data from various sources (e.g. Huntley and Boyd 1984), but the application of these generalized relationships to individual species is open to question (Lehman 1988). In the few studies of temperature effects on F max and Imax within individual copepod species, the Qlo values varied widely: 3.2 for F,,, (5"-15°C) in Acartia hudsonica (Deason 1980); 3.9 for Z,,, (lo-1 5°C) in Centropages hamatus (Kiorboe et al 1982), vs. 5.5 for F,,, representing pooled data from many species (Conover and Huntley 1980).…”

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confidence: 99%

Effects of temperature and food abundance on grazing and short‐term weight change in the marine copepod Acartia hudsonica

Durbin

1992

Limnology & Oceanography

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Ingestion and short-term weight change in adult female Acartia hudsonica were investigated at 4. 5", 8", 12", and 16°C with the solitary diatom Thalassiosira constricta as food. Narragansett Bay copepods were preadapted to the desired temperature and saturating food level for 3 d to standardize feeding history before the experiments. Maximal ingestion rates at the four temperatures were 16,460, 14,120, 2 1,470, and 29,960 cells copepod-'d-l or 43.9, 37.2, 67.9, and 92.9% body C (Q10 = 2.3) and 34.2, 30.7, 42.6, and 74.7% body N d-' (Q10 = 2.4). The critical concentration varied between 840 and 1,900 cells ml-' (0.17-0.23 pg C ml-l) and was not significantly related to temperature. Maximal clearance rate was similar at all temperatures (20.8-23.9 ml copepod-Id-l), but .on a weight-specific basis increased from 3.3 to 6.0 ml (pg copepod C)-'d -I between 4.5" and 16°C (Q10 = 1.8). Feeding rates at 4.5" and 8°C were similar; the seemingly low ingestion rates at 8°C were interpreted as evidence for a senescent population of adult copepods in the bay from late April to early May.During preadaptation at high food, A. hudsonica body C and N either stayed constant (indicating saturating food in the field) or increased (indicating food limitation in situ). Body weight was sensitive to variation in food supply; during the 24-h feeding experiments weight remained stable at the two highest food levels, but declined significantly at lower levels. Maximal observed weight loss was temperature-dependent, increasing from -15% C and 12% N d-l at 4.5"C to 25% C and 17% N d-l at 16°C. The relationship between temperature and feeding rate in marine copepods has seldom been investigated, although temperature effects on respiration, reproduction, growth and development, and gut evacuation are relatively well known (e.g. Mullin and Brooks 1970; Vidal 1980~;Dam and Peterson 1988;McLaren et al. 1989). Of particular interest are the effects of temperature on the maximum rates of feeding (I,,,) and clearance (E,,,), and the food concentrations associated with the lower feeding threshold (C,) and the attainment of Imax (the critical concentration Cc), as these parameters define the functional relationship between food abundance and feeding rate Acknowledgments We thank Robert G. Campbell for assistance in the field and laboratory work, Einar Hjorleifsson for advice concerning computer analysis of the data, R. Choudary Hanumara for statistical advice, Theodore J. Smayda for permission to use the C-N analyzer in his laboratory, and Marilyn Maley for assistance in manuscript preparation. We also thank three reviewers for their comments on the manuscript.

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Food-Limited Growth of Marine Zooplankton

Cited by 209 publications

References 47 publications

Seasonal variations in body length and fecundity of 2 copepod species: Thermocyclops crassus (Fischer, 1853) and Eudiaptomus drieschi (Poppe & Mrázek, 1895)

Seasonal variations in body length and fecundity of 2 copepod species: Thermocyclops crassus (Fischer, 1853) and Eudiaptomus drieschi (Poppe & Mrázek, 1895)

Food availability effects on reproductive strategy: the case of Acartia tonsa (Copepoda: Calanoida)

Effects of temperature and food abundance on grazing and short‐term weight change in the marine copepod Acartia hudsonica

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