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Population growth of Brachionus macracanthus (Rotifera) in relation to cadmium toxicity: influence of algal (Chlorella vulgaris) density.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2007 Aug; 42(10):1467-72.JE

Abstract

In the present work, we quantified the harmful effects of Cd(+ 2) to Brachionus macracanthus using both acute (median lethal) and chronic (population growth) toxicity tests. Chronic toxicity tests were conducted under 4 different concentrations (0.000625-0.005 mg L(- 1)) of cadmium chloride at 23 degrees C under 3 food (Chlorella vulgaris) levels (0.5 x 10(6), 1.0 x 10(6) and 2.0 x 10(6) cells mL(- 1)) using static renewal system for three weeks. The median lethal concentration bioassayed at 24 h (LC(50)) for B. macracanthus was 0.19 mg L(- 1) of CdCl(2). Cadmium adversely affected the population growth of B. macracanthus at all tested concentrations. Increase in algal food had a positive effect on the rotifer growth in controls; with increase in Cd levels, the population growth of B. macracanthus decreased even under the highest food level tested. The peak population abundance of B. macracanthus in controls at the highest food level of 2.0 x 10(6) cells mL(- 1) was 40 ind. mL(- 1). Depending on the heavy metal concentration and the algal level, the population growth rate (r) of B. macracanthus varied from 0.02 to 0.28 day(- 1). The relatively higher sensitivity of B. macracanthus to cadmium toxicity is discussed in relation to other species of the same genus.

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Authors+Show Affiliations

Nandini S
UIICSE, Division of Research and Postgraduate Studies, National Autonomous University of Mexico, Campus Iztacala, Los Reyes, Tlalnepantla, State of Mexico, Mexico. nandini@servidor.unam.mx
Chaparro-Herrera Dde J
No affiliation info available
Cárdenas-Arriola SL
No affiliation info available
Sarma SS
No affiliation info available

MeSH

AnimalsCadmiumChlorella vulgarisLethal Dose 50Population DensityPopulation GrowthRotiferaWater Pollutants, Chemical

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17680487

Citation

Nandini, S, et al. "Population Growth of Brachionus Macracanthus (Rotifera) in Relation to Cadmium Toxicity: Influence of Algal (Chlorella Vulgaris) Density." Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering, vol. 42, no. 10, 2007, pp. 1467-72.
Nandini S, Chaparro-Herrera Dde J, Cárdenas-Arriola SL, et al. Population growth of Brachionus macracanthus (Rotifera) in relation to cadmium toxicity: influence of algal (Chlorella vulgaris) density. J Environ Sci Health A Tox Hazard Subst Environ Eng. 2007;42(10):1467-72.
Nandini, S., Chaparro-Herrera, D. d. e. . J., Cárdenas-Arriola, S. L., & Sarma, S. S. (2007). Population growth of Brachionus macracanthus (Rotifera) in relation to cadmium toxicity: influence of algal (Chlorella vulgaris) density. Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering, 42(10), 1467-72.
Nandini S, et al. Population Growth of Brachionus Macracanthus (Rotifera) in Relation to Cadmium Toxicity: Influence of Algal (Chlorella Vulgaris) Density. J Environ Sci Health A Tox Hazard Subst Environ Eng. 2007;42(10):1467-72. PubMed PMID: 17680487.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Population growth of Brachionus macracanthus (Rotifera) in relation to cadmium toxicity: influence of algal (Chlorella vulgaris) density. AU - Nandini,S, AU - Chaparro-Herrera,Diego De Jesús, AU - Cárdenas-Arriola,Sara Leticia, AU - Sarma,S S S, PY - 2007/8/8/pubmed PY - 2007/10/31/medline PY - 2007/8/8/entrez SP - 1467 EP - 72 JF - Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering JO - J Environ Sci Health A Tox Hazard Subst Environ Eng VL - 42 IS - 10 N2 - In the present work, we quantified the harmful effects of Cd(+ 2) to Brachionus macracanthus using both acute (median lethal) and chronic (population growth) toxicity tests. Chronic toxicity tests were conducted under 4 different concentrations (0.000625-0.005 mg L(- 1)) of cadmium chloride at 23 degrees C under 3 food (Chlorella vulgaris) levels (0.5 x 10(6), 1.0 x 10(6) and 2.0 x 10(6) cells mL(- 1)) using static renewal system for three weeks. The median lethal concentration bioassayed at 24 h (LC(50)) for B. macracanthus was 0.19 mg L(- 1) of CdCl(2). Cadmium adversely affected the population growth of B. macracanthus at all tested concentrations. Increase in algal food had a positive effect on the rotifer growth in controls; with increase in Cd levels, the population growth of B. macracanthus decreased even under the highest food level tested. The peak population abundance of B. macracanthus in controls at the highest food level of 2.0 x 10(6) cells mL(- 1) was 40 ind. mL(- 1). Depending on the heavy metal concentration and the algal level, the population growth rate (r) of B. macracanthus varied from 0.02 to 0.28 day(- 1). The relatively higher sensitivity of B. macracanthus to cadmium toxicity is discussed in relation to other species of the same genus. SN - 1093-4529 UR - https://www.unboundmedicine.com/medline/citation/17680487/Population_growth_of_Brachionus_macracanthus__Rotifera__in_relation_to_cadmium_toxicity:_influence_of_algal__Chlorella_vulgaris__density_ L2 - https://www.tandfonline.com/doi/full/10.1080/10934520701480896 DB - PRIME DP - Unbound Medicine ER -

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