DDT as an accelerator of limb regeneration and molting in fiddler crabs

Weis, Judith S.; Mantel, Linda H.

doi:10.1016/0302-3524(76)90020-7

Cited by 41 publications

(15 citation statements)

References 20 publications

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“…For example, Richards et al (2008) have demonstrated that an 24 h-exposure to fluoxetine caused the increase of the chitobiase activity in Daphnia magna and authors have suggested that this effect could accelerate the moult. An acceleration of the moult cycle has also been observed in other ecotoxicological studies, as in the crab Uca pugilator exposed to pep 0 -DDT (Weis and Mantel, 1976) or in Homarus americanus exposed to emamectine benzoate (Waddy et al, 2002). In this last study, the authors have explained their results by the fact that the xenobiotic could inhibit the release of the moult-inhibition hormone (MIH), hormone which prevents the release of the molting hormone, i.e.…”

Section: Gammarid Population Consequencessupporting

confidence: 58%

Effects of two PBDE congeners on the moulting enzymes of the freshwater amphipod Gammarus pulex

Gismondi

Thomé

2014

Environmental Pollution

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a b s t r a c tPolybrominated diphenyl ethers (PBDEs) are abundant in aquatic environment. However, only few studies have investigated their impacts on freshwater invertebrates. This work aimed to study the effects of BDE-47 and BDE-99 congeners on the chitobiase and chitinolytic enzymes activities of the freshwater amphipod Gammarus pulex, according to gender, PBDE concentration and time of exposure. In addition, the bioaccumulation of BDE-47 and BDE-99 were measured. Results revealed that females have bioaccumulated more PBDE than males, and BDE-99 was more accumulated than BDE-47. PBDE exposures for 96 h have caused chitobiase and chitinolytic enzymes inhibition. This study not only indicate the importance of taking into account various confounding factors (gender, congeners, concentration) to understand PBDE effects, but underline also disruptions of molting enzymes activities. These disturbances suggest effects on the gammarid development and reproduction, and consequently effects on the gammarid population, and on a larger scale, a dysfunction of the ecosystem.

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Section: Gammarid Population Consequencessupporting

confidence: 58%

Effects of two PBDE congeners on the moulting enzymes of the freshwater amphipod Gammarus pulex

Gismondi

Thomé

2014

Environmental Pollution

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“…A faster development in response to pesticide exposure has been observed before in aquatic organisms (e.g. crabs [37] and tadpoles [14]). A possible explanation is that neurotoxic pesticides (such as chlorpyrifos) can excitate the central nervous system, resulting in a faster metamorphosis [37].…”

Section: Discussionmentioning

confidence: 51%

“…crabs [37] and tadpoles [14]). A possible explanation is that neurotoxic pesticides (such as chlorpyrifos) can excitate the central nervous system, resulting in a faster metamorphosis [37]. This response is likely adaptive as it shortens the larval stage, hence the duration of pesticide exposure [18].…”

Section: Discussionmentioning

confidence: 99%

Fitness Effects of Chlorpyrifos in the Damselfly Enallagma cyathigerum Strongly Depend upon Temperature and Food Level and Can Bridge Metamorphosis

Janssens

Stoks

2013

PLoS ONE

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Interactions between pollutants and suboptimal environmental conditions can have severe consequences for the toxicity of pollutants, yet are still poorly understood. To identify patterns across environmental conditions and across fitness-related variables we exposed Enallagma cyathigerum damselfly larvae to the pesticide chlorpyrifos at two food levels or at two temperatures and quantified four fitness-related variables (larval survival, development time, mass at emergence and adult cold resistance). Food level and temperature did not affect survival in the absence of the pesticide, yet the pesticide reduced survival only at the high temperature. Animals reacted to the pesticide by accelerating their development but only at the high food level and at the low temperature; at the low food level, however, pesticide exposure resulted in a slower development. Chlorpyrifos exposure resulted in smaller adults except in animals reared at the high food level. Animals reared at the low food level and at the low temperature had a higher cold resistance which was not affected by the pesticide. In summary our study highlight that combined effects of exposure to chlorpyrifos and the two environmental conditions (i) were mostly interactive and sometimes even reversed in comparison with the effect of the environmental condition in isolation, (ii) strongly differed depending on the fitness-related variable under study, (iii) were not always predictable based on the effect of the environmental condition in isolation, and (iv) bridged metamorphosis depending on which environmental condition was combined with the pesticide thereby potentially carrying over from aquatic to terrestrial ecosystems. These findings are relevant when extrapolating results of laboratory tests done under ideal environmental conditions to natural communities.

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“…An important effect which has claimed attention of researchers is the endocrine disruption or environmental signalization (McLachlan, 2001) in which organochlorines and other chemicals, but especially organochlorines can affect crustacean molting. Weis & Mantel (1976) detected an stimulating effect of p,p′-DDT in Uca pugilator molting, and Fingerman & Fingerman (1977) reported the same for Aroclor 1242 in relation to molting of the same species. Zou & Fingerman (1997a) reported that endosulfan delay the molting in Daphnia magna (Cladocera).…”

Section: Granulata Density and Organochlorine Concentrationsmentioning

confidence: 82%

Organochlorine pesticides (OCs) and polychlorinated biphenyls (PCBs) in sediments and crabs (Chasmagnathus granulata, Dana, 1851) from mangroves of Guanabara Bay, Rio de Janeiro State, Brazil

et al. 2008

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Organochlorinated compounds, seven indicator PCB congeners, DDT and its main metabolites, were determined in sediment and crab (Chasmagnathus granulata) samples collected from mangrove areas near Rio de Janeiro, Brazil. Samples were analysed according to the FAO/SIDA protocols using continuous non-polar solvent extraction and a conventional GC-ECD apparatus. The highest levels of total PCB congeners and total DDT metabolites in sediments (184.16 and 37.40 ng.g −1 d.w. respectively) and crab eggs (570.62 and 98.22 ng.g −1 d.w. respectively) were found at impacted mangroves. The higher PCB congeners than DDT metabolites levels suggesting a stronger industrial impact in this area. The results indicate that the population density of crab is negatively affected by sediment contamination that is reflected basically by the organochlorine content in the female eggs. The organochlorine concentration in eggs is more significant to evaluate or estimate an impact of these pollutants upon C. granulata population than the organochlorine concentration in sediment samples.

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DDT as an accelerator of limb regeneration and molting in fiddler crabs

Cited by 41 publications

References 20 publications

Effects of two PBDE congeners on the moulting enzymes of the freshwater amphipod Gammarus pulex

Effects of two PBDE congeners on the moulting enzymes of the freshwater amphipod Gammarus pulex

Fitness Effects of Chlorpyrifos in the Damselfly Enallagma cyathigerum Strongly Depend upon Temperature and Food Level and Can Bridge Metamorphosis

Organochlorine pesticides (OCs) and polychlorinated biphenyls (PCBs) in sediments and crabs (Chasmagnathus granulata, Dana, 1851) from mangroves of Guanabara Bay, Rio de Janeiro State, Brazil

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