A Laboratory Study of Intraspecies and Interspecies Competition in Daphnia pulicaria (Forbes) and Simocephalus vetulus O. F. Müller

Frank, Peter W.

doi:10.1086/physzool.25.2.30158355

Cited by 71 publications

(48 citation statements)

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“…11: D. hyalina (Green, 1956;Korinek, 1970;Bottrell, 1975aBottrell, , 1975bVijverberg, 1976). 12: D. schodleri (Lei and Clifford, 1974).13: Simocephalus vertulus (Frank, 1952;Green 1956Green , 1966Bottrell, 1975aBottrell, , 1975b. 14: S. acutirostris (Murugan and Sivaramakrishnan, 1973).…”

Section: Discussionmentioning

confidence: 99%

Measuring the Cost of Reproduction. Ii. The Correlation Structure of the Life Tables of Five Freshwater Invertebrates

Bell

1984

Evolution

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Section: Discussionmentioning

confidence: 99%

Measuring the Cost of Reproduction. Ii. The Correlation Structure of the Life Tables of Five Freshwater Invertebrates

Bell

1984

Evolution

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“…While extremely high natural densities of Daphnia have been observed, such as 331-1 170 Daphnia hyalina L-' in a surface swarm (Birge, 1896) or a peak of 750 D. pulex L-l in sewage ponds (Daborn et al, 1978), the natural densities in lakes are usually much lower. More typical densities are 9-100 L-l (Daborn et al, 1978;Edmondson & Litt, 1982;Frank, 1952;Brown, Duncan & Siders, 1967;Henry, Huebner & Uhrhammer, 1976))…”

Section: Introductionmentioning

confidence: 99%

Feeding rate inhibition in crowded Daphnia pulex

Helgen

1987

Hydrobiologia

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Feeding rates of Daphniapulex fed a range of levels of the alga Chlamydomonas reinhardi af 15 "C are strongly density-dependent. At lower densities, Daphnia (30 1-l) fed at higher rates than crowded (270 1-l) Daphnia which manifest a relatively depressed saturation feeding response. At 30 individuals/liter, Daphnia consumed 8.5 -15.7 x 104 cells d-'h-l (on a volume basis, 12.1 -22.2 x lo6 pm3), at 270 L-r 3.7 -3.9 x lo4 (5.2 -5.5 = lo6 pm3 cells d-'h-l when feeding on algae at 80000 cells ml-' (11.3 x lo6 pm3 ml-'). The feeding rate data best fit an Ivlev feeding function. An "autoallelopath" might be causing the repression. Water preconditioned with crowded Daphnia comnletely repressed feeding in uncrowded Daphnia after six hours.

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“…Reductions in viability with increasing density were observed by Hodjat (1969) in the locust Dysdercus; by Davis (1945) for male Trogoderma; and by Yoshida (1966) for male Callosobruchus chinensis. However, reduced viability with increasing density is by no means a universal result, as is evidenced by the data of Frank (1952) for Daphnia and Simocephalus; of Frank, Boll & Kelly (1957) for Daphnia pulex; of Pearl, Miner & Parker (1927) for D. melanogaster; and of Tawfik (1969) for the bedbug Omex, all of whom found that longevity increased up to a certain density, thereafter falling rapidly as density increased further. In the study being reported here there were no effects of undercrowding on viability, even at the lowest densities.…”

Section: Discussionmentioning

confidence: 99%

“…Some populations were also shown to react to decreases in density by adjusting their death rate a second time. Frank (1952), using Daphnia and Simocephalus, found that a sudden increase in density always produced an immediate and full increase in the death rate, but that decreases in density produced delayed effects. These results are somewhat different to those given here.…”

Section: Discussionmentioning

confidence: 99%

Interspecific competition between Drosophila melanogaster and Drosophila simulans: Effects of adult density on adult viability

Moth

Barker

1977

Genetica

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Survival (viability) of newly eclosed adults ofD. simulans st and D. melanogaster Or R-C, which had excess quantities of dead yeast available throughout life, was measured daily for 7 days in an experiment where adult density (6 levels), species frequency (6 levels) and a2p tissue content (2 levels) were varied factorially. A separate experiment comparing viability in different types of experimental unit also was done. Similar experiments were done for D. simulansst competing against D. melanogastery w. The entire data were subjected to a least-squares (unbalanced, missing-plot) analysis of variance.D. melanogaster Or R-C had a higher average viability than D. melanogastery w or D. simulans st, which were equal. The competing strain of D. melanogaster influenced D. simulans st viability -viability being higher when y w was the competitor. Viability decreased over the seven day period but at different rates for the three strains. Increasing density reduced viability for all three strains, but species frequency effects, although significant, were generally not consistent. Females had higher viability than males in both D. mdanogaster strains, but the reverse was true in D. simulans st. 32p .lowered viability and experimental unit type altered viability. Numerous inter. actions were significant.Adult density was shown to have a delayed effect on viability -the delay before the appearance of the effect (an increase in death rate) being decreased as density rose. The term 'variably delayed density dependent' has been adopted to describe the fitness component, adult viability. Some high density populations showed a readjustment (a decrease) in their death rate as a reaction to the effect of reduced density caused by high early mortality.

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A Laboratory Study of Intraspecies and Interspecies Competition in Daphnia pulicaria (Forbes) and Simocephalus vetulus O. F. Müller

Cited by 71 publications

References 0 publications

Measuring the Cost of Reproduction. Ii. The Correlation Structure of the Life Tables of Five Freshwater Invertebrates

Measuring the Cost of Reproduction. Ii. The Correlation Structure of the Life Tables of Five Freshwater Invertebrates

Feeding rate inhibition in crowded Daphnia pulex

Interspecific competition between Drosophila melanogaster and Drosophila simulans: Effects of adult density on adult viability

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