Tolerance of Intertidal Amphipods to Fluctuating Conditions of Salinity, Oxygen and Copper

Ritz, David

doi:10.1017/s0025315400028502

Cited by 14 publications

(4 citation statements)

References 19 publications

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“…In this study, Monoporeja affinis and Pontoporeia fenlorata tolerated low oxygen values in the same range as those tolerated by other amphipods (Sprague 1963, Gamble 1970, Bulnheim 1979, Ritz 1980, Agnew & Taylor 1985, Agnew & Jones 1986, Nebeker et at 1992, Winn & Knott 1992, Maltby 1995. Mortality was below 50'4, for both M. affinisand P. femorata after 24 h exposure to nearly anoxic water (0.2 mg O2 I-').…”

Section: Discussionsupporting

confidence: 57%

“…Mortality was below 50'4, for both M. affinisand P. femorata after 24 h exposure to nearly anoxic water (0.2 mg O2 I-'). In 3 ex-ported to be more tolerant to oxygen deficiency than marine amphipods (Bulnheim 1979, Ritz 1980. The salinity in the Asko area, where the amphipods were collected, is about 6.5%0, close to the lower limit of survival for P. femorata.…”

Section: Discussionmentioning

confidence: 99%

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Tolerance of the deposit-feeding Baltic amphipods Monoporeia affinis and Pontoporeia femorata to oxygen deficiency

Johansson¹

1997

Mar. Ecol. Prog. Ser.

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Tolerances of the 2 most common species of amphipods in the Baltic Sea to low oxygen concentrations were determ~ned over a range of ambient salinities in the Baltic. For both s p e c~e s more than half of the tested individuals had died by the end of 24 h of exposure to nearly anoxic water (0.2 mg O2 1.'). Despite its higher respiration rate and level of activity, Monoporeia affinis was s~gnificantly more tolerant than Pontoporeia femorata both to short (1 to 5 d) and long (24 d) p e r~o d s of exposure to low oxygen levels. As long as the amphipods survived the tested salinity, there were only minor effects of salinity on their tolerance to oxygen deficiency. Among the common macrobenthic softbottom species in the study area, M. affinis and P. femorata seem to b e the most sensitive to oxygen deficiency.

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Section: Discussionsupporting

confidence: 57%

Section: Discussionmentioning

confidence: 99%

Tolerance of the deposit-feeding Baltic amphipods Monoporeia affinis and Pontoporeia femorata to oxygen deficiency

Johansson¹

1997

Mar. Ecol. Prog. Ser.

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“…G. duebeni is generally widely distributed in North Sea estuaries (Bulnheim 1979, Ritz 1980, Sheader 1983. However, populations of this species on the Humber estuary in the United Kingdom appear transient and consequently, according to the criteria developed by Philips (1980), this species does not appear to be ideal for sub-lethal toxicity testing in this area.…”

Section: Introductionmentioning

confidence: 99%

Impact of copper, pentachlorophenol and benzo[a]pyrene on the swimming efficiency and embryogenesis of the amphipod Chaetogammarus marinus

Lawrence¹,

Poulter²

2001

Mar. Ecol. Prog. Ser.

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The effects of copper (Cu), pentachlorophenol (PCP) and benzo [a]pyrene (B[a]P) on swimming efficiency and embryogenesis of Chaetogammarus marinus were examined. Swimming stamina against a pump driven head flow of water was significantly impaired at concentrations of 15 µg Cu l . Cu and PCP extended the period of embryogenesis by 4 to 8 d while embryos cultured with B[a]P hatched at the same time as controls but were significantly smaller. Specific stages in the embryos' development were affected by each pollutant. Stage 1 was resistant to these effects but Stages 2 to 4, in which the embryo undergoes development of the germinal disc, dorsal organ rudiments, cordal furrows, appendage rudiments and segments, eye and heart, were all prolonged in toxicant-exposed treatments. The time taken for Stage 5 of embryogenesis was generally reduced in pollutant exposed embryos. The results indicate that both swimming stamina and embryogenesis in C. marinus may be used as sensitive bioassays for toxic effects in estuarine areas. In the case of Cu, the assays are responsive at environmental concentrations periodically experienced at some locations on the Humber estuary, United Kingdom. The swimming stamina assay has the advantage that it reflects the competence of the animals over a range of integrated physiological processes while the embryo assay has the advantage that effects at this level may reflect population level responses to pollution.

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“…The ability of G. duebeni to colonise and establish a breeding population at the works is probably a reflection of its wide tolerance to several environmental factors. This species is extremely euryhaline (Forsman, 1951;Sutcliffe, 1967;Pinkster, 1970) and can withstand marked hypoxic exposure (Bulnheim, 1979;Ritz, 1980). However, in addition to fluctuations in salinity and oxygen saturation, treatment works amphipods are exposed to relatively high levels of heavy metals associated with domestic and industrial inputs (Jones & Johnson, in press).…”

Section: Introductionmentioning

confidence: 99%

Effects Of Zinc/Salinity Combinations on Zinc Regulation inGammarus Duebenifrom the Estuary and the Sewage Treatment Works at Looe, Cornwall

Johnson

Jones

1989

J. Mar. Biol. Ass.

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At Looe, Cornwall (south-west England), engineering problems have resulted in the Sewage Treatment Works operating on saline rather than the typical freshwater sewage input. Saline water enters the system at all stages of the tide, except low water, mainly through the open-jointed sewers embedded in the mud of the Looe River Estuary, and causes a cyclical salinity regime within the works (Jones & Johnson, in press). A consequence of this seawater intrusion is the replacement of the freshwater macroinvertebrate community commonly associated with biological filters by two species of euryhaline amphipods. In particular, Gammarus duebeni Liljeborg is permanently established at various sites in the works including the percolating filters and humus tanks (Jones & Wigham, 1988). The ability of G. duebeni to colonise and establish a breeding population at the works is probably a reflection of its wide tolerance to several environmental factors. This species is extremely euryhaline (Forsman, 1951; Sutcliffe, 1967; Pinkster, 1970) and can withstand marked hypoxic exposure (Bulnheim, 1979; Ritz, 1980). However, in addition to fluctuations in salinity and oxygen saturation, treatment works amphipods are exposed to relatively high levels of heavy metals associated with domestic and industrial inputs (Jones & Johnson, in press). Within the humus (secondary settlement) tanks, zinc concentrations are particularly elevated compared with the adjacent estuary, although there are considerable fluctuations in zinc levels experienced by animals due to the tidally based dilution of the incoming sewage (Jones & Johnson, in press).

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Tolerance of Intertidal Amphipods to Fluctuating Conditions of Salinity, Oxygen and Copper

Cited by 14 publications

References 19 publications

Tolerance of the deposit-feeding Baltic amphipods Monoporeia affinis and Pontoporeia femorata to oxygen deficiency

Tolerance of the deposit-feeding Baltic amphipods Monoporeia affinis and Pontoporeia femorata to oxygen deficiency

Impact of copper, pentachlorophenol and benzo[a]pyrene on the swimming efficiency and embryogenesis of the amphipod Chaetogammarus marinus

Effects Of Zinc/Salinity Combinations on Zinc Regulation inGammarus Duebenifrom the Estuary and the Sewage Treatment Works at Looe, Cornwall

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