Ecotoxicological studies with newly hatched larvae of Concholepas concholepas (Mollusca, Gastropoda): bioassay with secondary-treated kraft pulp mill effluents

Manríquez, Patricio H.; Llanos-Rivera, Alejandra; Galaz, Sylvana; Camaño, Andrés

doi:10.1016/j.ecoenv.2013.09.015

Cited by 5 publications

(3 citation statements)

References 38 publications

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“…HS was measured as the number of live larvae just after hatching at the end of the acidification phase. Live larvae were those larvae displaying active swimming, with the entire 2-lobed velum protruded from the larval shell and the operculum fully opened (Manríquez et al 2013b). To obtain the C. concho lepas newly hatched larvae (NHL), once hatching began, the egg capsules were maintained separately in individual beakers with 100 ml FSW (0.45 µm mesh size) with the same pCO 2 level used during the acidification phase.…”

Section: Development Traits Of Newly Hatched Larvaementioning

confidence: 99%

“…After hatching, C. concholepas NHL are planktotrophic and rely on food particles present in the water column (DiSalvo 1988, Vargas et al 2006). However, they can remain alive for few days relying only on internal food re serves (Manríquez et al 2013b). Therefore, ELS in the present study was evaluated in absence of external food sources.…”

Section: Early Larval Survival (Els)mentioning

confidence: 99%

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Effects of ocean acidification on larval development and early post-hatching traits in Concholepas concholepas (loco)

Manríquez

Jara

Torres

et al. 2014

Mar. Ecol. Prog. Ser.

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Larval stages represent a bottleneck influencing the persistence of marine populations with complex life cycles. Concholepas concholepas is a gastropod species that sustains the most important small-scale artisanal fisheries of the Chile-Peru Humboldt Coastal current system. In this study, newly-laid egg capsules of C. concholepas collected from 3 localities along the Chilean coast were used to evaluate the potential consequences of projected near-future ocean acidification (OA) on larval development and early post-hatching larval traits. We compared hatching time, hatching success and early survivorship of encapsulated larvae reared under contrasting average levels of pCO 2 : 382 (present-day), ca. 715 and ca. 1028 µatm CO 2 (levels expected in near-future scenarios of OA). Moreover, we compared morphological larval traits such as protoconch size, thickness and statolith size at hatching. Some of the developmental traits were negatively affected by pCO 2 levels, source locality, female identity, or the interaction between those factors. Meanwhile, the effect of pCO 2 levels on morphological larval traits showed significant interactions depending on differences among egg capsules and females. Our results suggest that OA may decouple hatching time from oceanographic processes associated with larval transport and reduce larval survivorship during the dispersive phase, with a potential impact on the species' population dynamics. However, the results also show geographic variability and developmental plasticity in the investigated traits. This variation may lead to an increased acclimatization ability, facilitate the persistence of natural populations and mitigate the negative effects that OA might have on landings and revenues derived from the fishery of this species.

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Section: Development Traits Of Newly Hatched Larvaementioning

confidence: 99%

Section: Early Larval Survival (Els)mentioning

confidence: 99%

Effects of ocean acidification on larval development and early post-hatching traits in Concholepas concholepas (loco)

Manríquez

Jara

Torres

et al. 2014

Mar. Ecol. Prog. Ser.

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“…The main manifestations of injury detected in these trials are genotoxicity and endocrine disruption (see for the review Hewitt, 2011). The bioindication of the consequences to environment is mainly devoted to the parameters of populations (Meriläinen & Oikari, 2008;Manríquez, Llanos-Rivera, Galaz, & Camaño, 2013) or bioaccumulation of toxic compounds (Hayer, Wagner, & Pihan, 1996) whereas the analysis of molecular responses of the inhabitants of polluted areas is rather scant (Cajaraville, Cancio, Ibabe, & Orbea, 2003;Oakes & Van Der Kraak, 2003).…”

Section: Introductionmentioning

confidence: 99%

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Falfushynska¹,

Gnatyshyna²,

Goch³

et al. 2018

Turk. J. Fish. Aquat. Sci.

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The effluents of cardboard-paper mill (CPM) industry belong to most abundant pollutants of surface water. The aim of this study was to elucidate the toxicity of effluents downstream the CPM by the bioindication. The specimens of fish Carassius auratus (Cyprinidae) and mollusk Unio tumidus (Unionidae) from the suspected polluted area (SP) and pristine area as control (C) were compared. The fish and mollusk from SP demonstrated plural signs of toxicity and stress: 2.5−3.7 times higher levels of DNA fragmentation, nuclear abnormalities, lipid peroxidation products and lipofuscin (determined only in fish) in comparison with C-groups. The exposure to the certain xenobiotics was confirmed by the elevated by 2−3 times levels of metallothionein (response to toxic metals), CYP450-related activity and vitellogenin-like proteins (responses to endocrine disrupters, in particular, chlorinated organic substances). Cholinesterase activity in the brain of fish was the same in the C-and SP-groups proving the low evidence of typical agricultural pollution. Chemical analysis of water confirmed the highest level of pollution by phenols, chlorine, sulphate, nitrogen and organic compounds only directly downstream the wastewater treatment facilities of the CPM. These results prove the molecular bioindication to be the most valid approach to assess the toxicity of CPM effluents.

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The impact of kraft pulping effluent on egg survival and hatching success in two species of Clupeiformes (Teleostei)

Llanos-Rivera

Castro

Vásquez

et al. 2018

Environ Sci Pollut Res

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The anchoveta (Engraulis ringens) and sardine (Strangomera bentincki) are coastal pelagic species with important spawning areas off the coast of Chile. The discharge of secondary-treated effluents from a kraft pulp plant near one of these spawning areas has raised environmental concerns. Therefore, effluent effects on the development of anchoveta and sardine eggs were assessed by in vitro exposure. Eggs were sampled between 2007 and 2010 off Talcahuano, Chile. Subsequent toxicity tests (96 h duration, 12 °C) were performed using increasing effluent concentrations, a filtered seawater control, and two potassium dichromate concentrations (to verify consistent embryonic sensitivity). Egg mortality and hatching success were evaluated. For anchoveta, mortality (9.9 ± 7.1%) did not significantly differ among groups in five toxicity tests except the final toxicity test that showed significant differences in mortality (5.6% control vs 27.8% in 100% effluent). For sardines, no differences in mortality existed between the effluent dilutions (2.6 ± 3.6%) and control (6.3 ± 3.9%). Notably, anchoveta egg survival and hatching success rates were inconsistent, i.e., the highest rates of hatching failure occurred on the same sampling date with the highest rates of survival for the 100% effluent group (72%). In conclusion, the obtained results indicate that (i) anchoveta egg mortality and hatching failure increase only under 100% effluent exposure, coinciding with decreased egg quality near the end of spawning season and (ii) high effluent dilutions not significantly increase sardine and anchoveta egg mortalities. Nevertheless, the recorded adverse effects to the hatching process should be studied in greater detail, particularly considering interspecific variability and the complexity of reproductive processes, especially during early development.

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Ecotoxicological studies with newly hatched larvae of Concholepas concholepas (Mollusca, Gastropoda): bioassay with secondary-treated kraft pulp mill effluents

Cited by 5 publications

References 38 publications

Effects of ocean acidification on larval development and early post-hatching traits in Concholepas concholepas (loco)

Effects of ocean acidification on larval development and early post-hatching traits in Concholepas concholepas (loco)

Untitled

The impact of kraft pulping effluent on egg survival and hatching success in two species of Clupeiformes (Teleostei)

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