Sublethal effects of cupric ion activity on the grazing behaviour of three calanoid copepods

Sharp, Andrew A.; Stearns, DE

doi:10.1016/s0025-326x(97)00096-9

Cited by 14 publications

(13 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These observed responses are consistent with other similar results recorded by Sullivan et al (1983) who found that 24 h exposure to sublethal copper levels caused nauplii to be hyperactive. This pattern of escape stimulation produced by a chemical which is toxic at high concentrations is also similar to other behavioral responses documented in several toxicological bioassays (Sharp and Stearns 1997;Calabrese et al 1999;Brown et al 2002).…”

Section: Discussionsupporting

confidence: 81%

“…In this context, among all biological traits, different behaviors have been documented as one of the most sensitive parameters to evaluate low level effects of pollutants on different zooplankton species (Sharp and Stearns 1997;Lopes et al 2004). Additionally, several studies have been carried out in order to understand not only individual ethology but also its possible consequences for the population dynamics (Ohman 1988).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Microcrustaceans escape behavior as an early bioindicator of copper, chromium and endosulfan toxicity

Gutiérrez

Paggi

Gagnetén³

2011

Ecotoxicology

View full text Add to dashboard Cite

The purpose of this work was to experimentally analyze the impact of copper, chromium and a commercial pesticide with endosulfan on the escape behavior of two copepods (Notodiaptomus conifer, Argyrodiaptomus falcifer) and three cladocerans (Daphnia magna, Pseudosida variabilis and Ceriodaphnia dubia). The experimental assays were carried out using a novel hydraulic devise designed to mimic three-speed predator capture behavior. Two concentrations, one "high" and one "low", were employed and the exposure time was 15 (±5) minutes. With two exceptions, the species exposed to heavy metals manifested higher ability to escape than controls. Both concentrations of the pesticide reduced the escape ability of cladocerans but copepods responded, in general, in a similar manner as for heavy metals. The immediate apparent advantage of low and early toxic effects is discussed and the high sensitivity of the escape behavior suggests that it could be a complementary endpoint to be used in future ecotoxicological tests.

show abstract

Section: Discussionsupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Microcrustaceans escape behavior as an early bioindicator of copper, chromium and endosulfan toxicity

Gutiérrez

Paggi

Gagnetén³

2011

Ecotoxicology

View full text Add to dashboard Cite

show abstract

“…The effect of the cupric ion activity on survival and development in other adult and nauplii copepods has been also described in the marine species Acartia tonsa (Dana) by Sunda et al (1987). Moreover, a negative copper effect in grazing activity has also been reported in other calanoid copepods (Sharp & Stearns 1997), and consequently in egg production (Kiørboe et al 1985). The negative effects of dimethoate over other crustacean have been also described (Roast et al 1999).…”

Section: Discussionmentioning

confidence: 92%

Agricultural impacts on Mediterranean wetlands : the effect of pesticides on survival and hatching rates in copepods

Parra

Jiménez-Melero

Guerrero

2005

Ann. Limnol. - Int. J. Lim.

View full text Add to dashboard Cite

“…Exposure to dissolved Cu for 24 h reduced the grazing activity in copepods [35]. In fact, acute effects of waterborne Cu on A. tonsa physiology (feeding rate and ion regulation) are associated with a combined effect of Cu and food restriction [17].…”

Section: Discussionmentioning

confidence: 97%

Chronic copper toxicity in the estuarine copepod Acartia tonsa at different salinities

Lauer

Bianchini

2010

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

Chronic Cu toxicity was evaluated in the euryhaline copepod Acartia tonsa. Male and female copepods were exposed (6 d) separately to different combinations of Cu concentration and water salinity (5, 15, and 30 ppt) using different routes of exposure (waterborne, waterborne plus dietborne, and dietborne). After exposure, groups of one male and three female copepods were allowed to reproduce for 24 h. In control copepods, egg production augmented with increasing water salinity. However, egg hatching rate did not change. Copper exposure reduced egg production and hatching rate in all water salinities tested, but the reproductive response was dependent on the route of Cu exposure. Median effective concentration (EC50) values for egg production after waterborne exposure were 9.9, 36.8, and 48.8 µg/L dissolved Cu at water salinities of 5, 15, and 30 ppt, respectively. For waterborne plus dietborne exposure, they were significantly higher (40.1, 63.7, and 109.9 µg /L, respectively). After dietborne exposure, approximately 40% decrease in egg production was observed, independently of Cu concentration and water salinity tested. At water salinities of 5 and 30 ppt, egg hatching rate reduced after waterborne exposure, together or not with the dietborne exposure. At water salinity of 15 ppt, Cu toxicity was only observed after dietborne exposure. Data indicate that egg production is a more reliable reproductive endpoint to measure chronic Cu toxicity in copepods than egg hatching rate in a wide range of water salinities. They also suggest that both water salinity and route of Cu exposure should be taken into account in the development of a chronic biotic ligand model version for estuarine and marine environments.

show abstract

Sublethal effects of cupric ion activity on the grazing behaviour of three calanoid copepods

Cited by 14 publications

References 25 publications

Microcrustaceans escape behavior as an early bioindicator of copper, chromium and endosulfan toxicity

Microcrustaceans escape behavior as an early bioindicator of copper, chromium and endosulfan toxicity

Agricultural impacts on Mediterranean wetlands : the effect of pesticides on survival and hatching rates in copepods

Chronic copper toxicity in the estuarine copepod Acartia tonsa at different salinities

Contact Info

Product

Resources

About