Influence of Temperature on Size of Freshwater Copepods (Cyclops)

Coker, R. E.

doi:10.1002/iroh.19330290504

Cited by 65 publications

(28 citation statements)

References 6 publications

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“…According to Gaudy and Verriopoulos (2004), copepod body length is inversely related to temperature. Some scientists suggest that temperature is the primary determinant of body size at maturity (Coker, 1933;Deevey, 1960;McLaren, 1963McLaren, , 1965 and that it is a key abiotic factor regulating the growth and reproductive potential of copepods in marine and freshwater systems. Additionally, temperature is a key variable in the development of production regimes (Rhyne et al, 2009).…”

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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“…There have been many studies of the effects of food concentration on rotifers (e.g., King 1967;Makarewicz & Likens 1979;Snell 1979), on cladocerans (e.g., Banta et al 1939;Slobodkin 1954;Hall 1964;Schindler 1968;Vijverberg 1976;Makarewicz & Likens 1979) and on marine and estuarine copepods (e.g., Marshall & Orr 1952;Corkett & McLaren 1969Mullin & Brooks 1970;Paffenhofer 1970). However, little work has been done on the effects of food concentration on freshwater cyclopoids (Coker 1933;Elgmork & Halvorsen 1976) or calanoids (Eckstein 1964;Robertson et al 1974;Cooney et al 1978). Moreover, these studies of freshwater copepods have been concerned only with temperate zone species and the experiments performed are not strictly repeatable since rigorously defined media and food were not always used.…”

Section: Introductionmentioning

confidence: 99%

The influence of food concentration and container volume on life history parameters of Diaptomus dorsalis Marsh from subtropical Florida

Elmore

1982

Hydrobiologia

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IntroductionTwo experiments were conducted with a subtropical calanoid, Diaptomus dorsalis Marsh 1907, to determine the influence of food concentration and the volume of medium per copepod (one copepod in each of several containers of different volumes) on post-embryonic development rates, adult body size, clutch size, survivorship and sex ratio. Low concentrations of food (Chlamydomonas reinhardti) decreased development rates, body size, clutch size and survivorship; the sex ratio did not vary significantly from 1:1. Small container volumes had the same effects as low food concentrations, except that naupliar development time was not affected and survivorship showed greater variability. Because the copepod parameters exhibited maximum responses when food was abundant, even in the smallest container volume, it was concluded that container volume did not directly influence these parameters but exerted its effect through food availability.Larger life history stages were affected more than smaller life history stages by low food levels. In part, this was attributed to a laboratory artifact in which depletion of food by larger animals was greater than by smaller animals and, in part, to a real effect of low food concentration. A possible explanation of this real effect came from comparisons of these results to data from D. dorsalis fed phytoplankton from a Florida lake. The comparisons suggested that nauplii may be more efficient feeders on, or utilizers of, small food items such as Chlamydomonas.Numerous studies of natural zooplankton populations have correlated concentration of food with responses of various life history parameters. Although such studies have been useful in suggesting factors which may influence these parameters in nature, it has often been impossible to separate the effects of food from other factors, e.g., temperature, water quality and predation.For this reason, laboratory studies have been undertaken to elucidate the relationships between food concentration and zooplankton life history parameters. There have been many studies of the effects of food concentration on rotifers (e.g.

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“…In appropriate columns there are also shown the mean lengths of the furca for each temperature class and for each sex, the numbers of examples measured, the numbers of cultures from which they were taken at random, and the numbers of generations represented by them. The culture methods and the methods of measuring live copepods have been fully explained in another place (Coker, 1933). All copepods were the progeny of one female.…”

Section: Introductionmentioning

confidence: 99%

Influence of Temperature on Size of Freshwater Copepods (Cyclops)

Cited by 65 publications

References 6 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)

The influence of food concentration and container volume on life history parameters of Diaptomus dorsalis Marsh from subtropical Florida

Influence of temperature on form of the freshwater Copepod, Cyclops vernalis Fischer

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