Efficacy of Selected Compounds on <i>Thermocyclops oblongatus</i>, one of the Main Intermediate Hosts of Guinea Worm in Africa

Chippaux, Jean‐Philippe; Yovo, Koffi; Soakoudé, Y.; Akogbéto, Martin

doi:10.1002/aheh.19960240606

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…The influence of time in short-term bioassays was considered in five studies, where sensitivity to pesticides was shown to increase with time of exposure (Ludemann and Neumann 1960;Robertson and Bunting 1976;Notenboom et al 1992;Willis 1999;Kulkarni et al 2013a). Acute sensitivity to the insecticide Temephos has been investigated in three different studies up to now (Table 2): besides differences in the experimental conditions, data indicated that the cyclopoid Macrocyclops albidus and Thermocyclops oblongatus are more sensitive than Thermocyclops hyalinus at 24 h of exposure (Samman and Thomas 1978;Chippaux et al 1996;Marten et al 1993). Notenboom et al (1992) and Willis (1999) tested the effect of Pentachlorophenol, respectively, on the hypogean species Parastenocaris germanica and on three surface freshwater species, namely, the calanoid Boeckella delicata and Calamoecia lucasi and the cyclopoid Mesocyclops leuckarti.…”

Section: Review Of Literature Datamentioning

confidence: 99%

Sensitivity of hypogean and epigean freshwater copepods to agricultural pollutants

Lorenzo

Marzio

Sáenz

et al. 2013

Environ Sci Pollut Res

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Widespread pollution from agriculture is one of the major causes of the poor freshwater quality currently observed across Europe. Several studies have addressed the direct impact of agricultural pollutants on freshwater biota by means of laboratory bioassays; however, as far as copepod crustaceans are concerned, the ecotoxicological research is scarce for freshwater species and almost nonexistent for the hypogean ones. In this study, we conducted a comparative analysis of the available literature data on the sensitivity of freshwater copepods to agricultural pollutants. We also assessed the acute and chronic sensitivity of a hypogean and an epigean species, both belonging to the Crustacea Copepoda Cyclopoida Cyclopidae, to two N-fertilizers (urea and ammonium nitrate) and two herbicides (ARIANE TM II from Dow AgroSciences LLC, and Imazamox), widely used for cereal agriculture in Europe. According to the literature review, freshwater copepods are sensitive to a range of pesticides and N-fertilizers. Ecotoxicological studies on hypogean species of copepods account only one study. There are no standardized protocols available for acute and chronic toxicity tests for freshwater copepods, making comparisons about sensitivity difficult. From our experiments, ionized ammonia proved to be more toxic than the herbicide Imazamox, in both short and chronic bioassays. Urea was the less toxic chemical for both species. The hypogean species was more sensitive than the epigean one to all chemicals. For both species and for all tested chemicals, acute lethality and chronic lethality were induced at concentrations higher than the law limits of good water body quality in Europe, except for ionized ammonia, which provoked the chronic lethality of the hypogean species at a lower concentration. The hazardous concentration (HC) of unionized ammonia for 5 % of freshwater copepods, obtained by a species sensitivity distribution, was 92 μg l −1 , significantly lower than the HC computed for traditional test species from freshwater environments.

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Section: Review Of Literature Datamentioning

confidence: 99%

Sensitivity of hypogean and epigean freshwater copepods to agricultural pollutants

Lorenzo

Marzio

Sáenz

et al. 2013

Environ Sci Pollut Res

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“…For instance, the 24h LC 50 of PCMX to the rotifer Brachionus koreanus was reported to be 24.264 (20.892-28.243) (Won et al 2022), 31.8 (26.5-36.8 mg/l) for the nematode Caenorhabditis elegans (Sreevidya et al 2018), 48.6 (45.8-52.0) for the mite Dermatophagoides pteronyssinus and 60.9 (46.7-89.1) for the mite Dermatophagoides farina(Suhaili et al 2016). However, the sensitivity of O. alluaudi to PCMX was lower than what was reported for a crustacean, Thermocyclops oblongatus, which had a 24h LC 50 of 0.17 mg/l(Chippaux et al 1996). There is a paucity of information on the acute effect of PCMX on invertebrates exposed for more than 24 hours, but the 48 hour LC 50 for Daphnia magna was reported to be 8.78 mg/l (Novak et al 2021).…”

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confidence: 95%

First report on the acute toxicity of Chloroxylenol to the Whirligig beetle, Orectogyrus alluaudi (Coleoptera: Gyrinidae)

Amusan

Koleosho

Richard

2022

Preprint

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Environmental contamination by xenobiotics is a worldwide phenomenon being mainly caused by human activities and urbanization. The release of harmful substances leaves short and long term effects in the environment. This study assessed the acute toxicological effects of different concentrations of chloroxylenol (PCMX), an active ingredient in most liquid cleaning products, on the whirligig beetle Orectogyrus alluaudi Regimbart, 1889. This was done with the aim of determining the potential lethal effects of the chemical on this aquatic organism. The beetle’s behaviour and swimming pattern were both altered by PCMX before mortality occurred. The 24-h, 48-h, 72-h, and 96-h calculated LC50 values were 21.587, 16.744, 11.638 and 7.819 mg/L, respectively. The mortality of the test organisms increased with increased concentration and extended exposure duration. Thus giving an indication that the toxicity of PCMX to the beetles was time and concentration-dependent. The altered behaviour and swimming pattern in the beetles could be ascribed to physiological responses and disturbances in their nervous coordination due to exposure to PCMX.

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Hommel¹

2004

Erläuterungen Und Synonymliste

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Efficacy of Selected Compounds on Thermocyclops oblongatus, one of the Main Intermediate Hosts of Guinea Worm in Africa

Abstract: In Heft 1/97 der Acta hydrochimica et hydrobiologica sind folgende BeitrBge erschienen: Terbuthylazine and Deethylterbuthylazinc, in

Cited by 4 publications

References 5 publications

Sensitivity of hypogean and epigean freshwater copepods to agricultural pollutants

Sensitivity of hypogean and epigean freshwater copepods to agricultural pollutants

First report on the acute toxicity of Chloroxylenol to the Whirligig beetle, Orectogyrus alluaudi (Coleoptera: Gyrinidae)

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