Food thresholds and body size in cladocerans

Gliwicz, Z. Maciej

doi:10.1038/343638a0

Cited by 391 publications

(333 citation statements)

References 12 publications

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“…This pattern may reflect the ability of larger Cladocera to competitively exclude smaller species when nutrients are limiting, as larger cladocerans have lower limiting thresholds for nutrients (Brooks & Dodson 1965;Gliwicz 1990). This relationship may also be apparent within the genus level, where a positive correlation between Daphnia body length and filtering rate exists, with larger Daphnia proving to be the more efficient grazers (Burns & Rigler 1967).…”

Section: Discussionmentioning

confidence: 99%

“…For example, Manca and Comoli (2004) found that maximum body size of Daphnia is dependent on summer temperatures and the duration of the ice-free period, with reductions in temperature linked to larger size at maturity (Moore et al 1996). In addition, lower phosphorus levels favour large-bodied species because they have a lower nutrient limiting threshold compared to small-bodied species (Gliwicz 1990). Given the relative ease of measuring Cladocera, these size-based approaches could potentially compliment community assemblage approaches to provide a more complete reconstruction of past environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

“…These predictor variables we chose were based on previously identified factors that are important determinants of cladoceran size (Yan et al 2008b). Based on the results of previous limnological studies, we hypothesized that the mean size of cladoceran groups, and the community index, will be higher under low total phosphorus (TP; Brooks & Dodson 1965;Burns & Rigler 1967;Gliwicz 1990), and lower with declining dissolved organic carbon (DOC; Yan et al 2008b). Calcium (Ca) is a key structural component of cladoceran carapaces, in particular Daphnia (Jeziorski & Yan 2006), and, as a result, low Ca concentrations in lakewater could potentially display lower mean cladoceran body sizes.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Linking mean body size of pelagic Cladocera to environmental variables in Precambrian Shield lakes: A paleolimnological approach

Korosi¹,

Paterson²,

DeSellas³

et al. 2008

J Limnol

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Linking mean body size of pelagic Cladocera to environmental variables in Precambrian Shield lakes: A paleolimnological approach

Korosi¹,

Paterson²,

DeSellas³

et al. 2008

J Limnol

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“…For cladocerans, there is a n inverse relation between the body size and threshold food concentration. For example, Gliwicz (1990) has shown that the threshold food level actually decreases with increasing body size. However, it is important to note that most studies on the threshold food levels are based on the genus Daphnia, which h a s a relatively large body size (ca.…”

Section: Discussionmentioning

confidence: 99%

Population Growth and Body Size in Five Rotifer Species in Response to Variable Food Concentration

Nandini¹,

Sarma²,

Amador-López³

et al. 2007

Journal of Freshwater Ecology

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We cultured five species of rotifers (Brachionus angularis, B. calyciporus, B. patulus, Euchlanis dilatata, and Lepadella patella) under different algal concentrations (Chlorella vulgaris) for a period of 10 to15 days, and we derived the rate of population growth per day (rj for each rotifer species. Using a regression between food concentration and the r for each rotifer species, we calculated the minimal food level required to maintain a zero growth rate (threshold food concentration). For all the tested species, there was a direct and positive relationship between food concentration and peak population density. The highest peak density (738 ind. mL-l) was achieved by L. patella at 0.4X106 cells mL-1. At this food density, B. calycijlorus was only able to reach about 10 ind. mL-1. The highest r value (0.46 d-1) was observed for L. patella at 0.4X106 cells mL-1; at this food concentration, B. calyciflorus and E. dilatata had much lower r values (0.2 land 0.23 d-1, respectively). On a dry weight basis, L. patella had the lowest threshold food concentration (0.0023 mg C t -1 d-I), while B.calyciflorus needed much higher levels (2.04 mg C L

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“…It seems also that the young individuals of the overwintering lineage, staying deepest (24 m on average), were more influenced by algal distribution in the water column than were the other two groups: the highest food concentrations were observed 25-35-m down. Indeed, food threshold concentrations are higher for small or young Daphnia (Gliwicz, 1990;Kreutzer, 1999). The observed distribution could be an example of a niche segregation resulting from inter-or intraspecific competition for food between small and large sized individuals, if the vertical distribution of the animals was size dependent.…”

Section: Discussionmentioning

confidence: 99%

Behavioural and physiological mechanisms behind extreme longevity in Daphnia

et al. 2012

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The combined effect of external environment and energy allocation strategy of the organism on longevity can be exceptional. In a cold oligotrophic fishless habitat, individual Daphnia can live for over a year, several times the usual Daphnia lifespan. This extreme lifespan is in part a consequence of the overwintering strategy which includes storing resources and delaying reproduction until another spring. Yet, contrasting strategies may be applied by Daphnia, resulting in over twofold differences in lifespan within a single habitat. We identify physiological mechanisms mediating such differences in longevity in closely related Daphnia of two lineages coexisting within a high altitude lake, testing the predictions that long-lived animals stay in colder waters and have lower metabolic rates, irrespective of temperature. Vertical distribution of the animals was assessed during three summer stratification seasons, and metabolic activity was measured as oxygen consumption and RNA:DNA ratio. The results not only support our predictions but also reveal that habitat choice is dependent on reproductive status rather than genotype. The young individuals of the overwintering lineage may delay reproduction in part by staying in colder waters than the reproducing adults, which together with low intrinsic metabolic rates may underlie the longevity of Daphnia of this lineage.

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Food thresholds and body size in cladocerans

Cited by 391 publications

References 12 publications

Linking mean body size of pelagic Cladocera to environmental variables in Precambrian Shield lakes: A paleolimnological approach

Linking mean body size of pelagic Cladocera to environmental variables in Precambrian Shield lakes: A paleolimnological approach

Population Growth and Body Size in Five Rotifer Species in Response to Variable Food Concentration

Behavioural and physiological mechanisms behind extreme longevity in Daphnia

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