Ionoregulatory and toxicological responses of stonefly nymphs (Plecoptera) to acidic and alkaline pH

Lechleitner, Richard A.; Cherry, Donald S.; Cairns, John; Stetler, D. A.

doi:10.1007/bf01055609

Cited by 29 publications

(17 citation statements)

References 24 publications

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“…. Similar losses of whole-body Na and Cl in acidstressed aquatic insects have been reported elsewhere, although at somewhat lower pH's (pH 2.8-3.0) and were also associated with mortality (Vangenechten & Vanderborght, 1980;Havas & Hutchinson, 1983;Lechleitner et al, 1985). The combination of these toxicity and whole-body ion results, suggest a high degree of tolerance to low pH by aquatic insects relative to some fish (Wood & McDonald, 1982), amphibians (Freda & Dunson, 1984; and crustaceans (Havas & Hutchinson, 1972;1983).…”

Section: Leptophlebia Cupidamentioning

confidence: 64%

The effects of short-term laboratory pH depressions on molting, mortality and major ion concentrations in the mayflies Stenonema femoratum and Leptophlebia cupida

et al. 1989

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Field surveys of the distribution of mayfly nymphs suggest that Stenonema femoratum are more acid-sensitive than Leptophlebia cupida. To assess whether this apparent difference in sensitivity of nymphs is reflected in differences in the degree of whole-body loss of [Na], [Cl], [Ca] or [K] under laboratory conditions, we exposed nymphs of both species to low pH for 96-192 h in soft water ([Ca] = 0.1 mM). Although mortality and loss of whole-body [Na] and [Cl] occurred in both species at pH 3.5, unexpectedly they were considerably greater in L. cupida than in S. femoratum. Ion loss was not size related within the range of nymphal weights used (2-14 mg dry wt) for S. femoratum. Exposure to the environmentally more common pH 4.5 had no effect on whole-body [Na] and [Cl] or on mortality in either species. However, in L. cupida, molting by nymphs increased at both pH 3.5 and 4.5. A decrease in whole-body [Ca] occurred, and the loss of whole-body [Na] and [Ca] at pH 3.5 appeared to cease following the period of molting. In S. femoratum no molting or Ca loss occurred and whole-body [Na] and [Cl] decreased between 96 and 192 h exposures.

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Section: Leptophlebia Cupidamentioning

confidence: 64%

The effects of short-term laboratory pH depressions on molting, mortality and major ion concentrations in the mayflies Stenonema femoratum and Leptophlebia cupida

et al. 1989

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“…high proton and aluminium concentrations and low calcium concentrations) leading to the disruption of important physiological functions (e.g. ion regulation, respiration) have been evidenced in several species of crustacean (Wood 1986;Maltby 1994;Felten 2001), molluscs (Pynno¨nen 1990) and insects (Lechleitner 1985;Frick 1990).…”

Section: Discussionmentioning

confidence: 98%

Plecoptera response to acidification in several headwater streams in the Vosges Mountains (northeastern France)

Tixier

Guérold

2005

Biodivers Conserv

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Plecoptera are among the most threatened aquatic invertebrates in industrialised countries as they are very sensitive to many types of pollution. On the contrary, stoneflies are largely considered as tolerant to acidification in comparison with many other macroinvertebrate groups. However, an understanding of Plecoptera responses to acidification is lacking due firstly to the complexity of most Nemouroidea specific determinations at larval instars and secondly to the poor Plecoptera diversity in North European countries, where most studies on acidification impact were performed. In the present study, we assess the response of Plecoptera species and species assemblages to freshwater acidification by collecting adults, allowing specific determination. Significant relationships were observed between richness and several chemical parameters. The relative abundance of several species was also significantly correlated to pH and acid neutralizing capacity (ANC). The results highlight the importance of species determination to assess the effects of acidification. Direct effects, i.e. ecotoxicological effects, were not the only factor leading to the erosion of Plecoptera diversity. Finally, this study tends to demonstrate that this order of aquatic insects is more severely affected by freshwater acidification than commonly believed.

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“…Least tolerant were larvae of the mayfly Ephemerella subvaria, with an acidic LD 50 in 96 hours of pH 4.65. Lechleitner (1985) reported that stonefly nymphs had acidic LD 50 values in 96 hours of 2.8 to 3.3 and alkaline LD 50 values from 10.3 to 12.1. Long-term pH tolerance of other arthropods has also been studied.…”

Section: Bsfl (Hermetia Illucens) Have Been Identified As Instrumentamentioning

confidence: 99%

Biological Treatment of Leachates of Microaerobic Fermentation

Alattar

2000

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Microaerobic fermentation (MF) is a process of controlled degradation of organic waste material that occurs in enclosed fermentors under micro-aerobic conditions at near-room temperature. MF processing of vegetal materials progresses to endpoints in about 2-5 weeks. During MF processing, an acidic leachate rich in organic acids and alcohols is produced. The research presented in this thesis focuses on the efficiency of MF preprocessing of feedstock containing fibrous lignocellulosic (FLC) materials; efficiency of microbial and insect larvae-based treatments of MF leachate; tolerance of the Black Soldier fly larvae (BSFL) to various biological inhibitors common in leachate; and effectiveness of using MF and BSFL solid and liquid processing products as agricultural fertilizers. Results indicate that MF is unsuitable for pre-processing of FLC materials.Enhanced MF leachate treatment may increase efficiency of FLC processing though.Leachate can be efficiently treated using BSFL which decrease overall leachate toxicity.

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Ionoregulatory and toxicological responses of stonefly nymphs (Plecoptera) to acidic and alkaline pH

Cited by 29 publications

References 24 publications

The effects of short-term laboratory pH depressions on molting, mortality and major ion concentrations in the mayflies Stenonema femoratum and Leptophlebia cupida

The effects of short-term laboratory pH depressions on molting, mortality and major ion concentrations in the mayflies Stenonema femoratum and Leptophlebia cupida

Plecoptera response to acidification in several headwater streams in the Vosges Mountains (northeastern France)

Biological Treatment of Leachates of Microaerobic Fermentation

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