Comparative sensitivity of various developmental stages of sea urchins to some chemicals

Kobayashi, Naomasa

doi:10.1007/bf00391872

Cited by 72 publications

(41 citation statements)

References 9 publications

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“…Responses of early life history stages to toxicants are stage specific, and for many echinoids tests to the pluteus stage are more sensitive than tests on the same species to earlier developmental stages (Kobayashi 1980, Castagna et al 1981, Dinnel et al 1989, Bay et al 1993). Short-term tests to the hatched blastula stage, and long-term tests to the 2-arm pluteus stage were used in this study to compare the sensitivity of different developmental stages of Sterechinus neumayeri to the metals copper, cadmium and zinc.…”

Section: Effect Of Metals On Sterechinus Neumayeri and The Relative Smentioning

confidence: 99%

“…Early life history stages of marine invertebrates, including echinoids, are known to be highly sensitive to environmental stresses, including contaminants, and are therefore widely used as test species in environmental monitoring programs (e.g. Kobayashi 1980, Klockner et al 1985, Ringwood 1992, Bay et al 1993. Despite the extensive range of toxicity test methods developed and used routinely in tropical and temperate regions, very few methods have been developed for Antarctic species , Cleveland et al 1997, Ling et al 1998, Duquesne et al 2000.…”

Section: Introductionmentioning

confidence: 99%

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Effects of metal contaminants on the development of the common Antarctic sea urchin Sterechinus neumayeri and comparisons of sensitivity with tropical and temperate echinoids

King¹,

Riddle²

2001

Mar. Ecol. Prog. Ser.

114

107

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-1). As the concentration of Cu shown to inhibit development of S. neumayeri is similar to levels found at impacted sites in Antarctic nearshore environments, results of this study indicate that this metal may have an impact on the development of S. neumayeri. The sensitivity of S. neumayeri to copper and cadmium in tests based on development to hatched blastulae (6 to 8 d) are generally comparable to results of tests on echinoids from tropical and temperate regions that use development to 2-arm plutei (2 to 4 d) as the end-point. However, the Antarctic species is more sensitive to copper and cadmium than the tropical and temperate species if the tests are continued to the same stage of development, the pluteus larva (20 to 23 d for the Antarctic species). Comparing the tolerance of a key developmental stage common to all planktotrophic sea urchins may be more ecologically relevant than simply comparing exposure over a fixed period of time, because for an embryo to survive to adulthood it must successfully complete all development stages. This is the first reported evidence that Antarctic species could be more sensitive to contaminants than species from warmer regions.

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Section: Effect Of Metals On Sterechinus Neumayeri and The Relative Smentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of metal contaminants on the development of the common Antarctic sea urchin Sterechinus neumayeri and comparisons of sensitivity with tropical and temperate echinoids

King¹,

Riddle²

2001

Mar. Ecol. Prog. Ser.

114

107

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show abstract

“…According to Dafni, the growth rate of deformed individuals is very low compared with that of normal ones. Effects of heavy metals on gametes and on various developmental stages of echinoidsmostly plutei -were investigated by several authors (e. g. Bougis, 1967;Kobayashi, 1980;Castagna et al, 1981). These investigations showed that either gametes, embryos or larvae of echinoids are suitable material for marine pollution bioassays.…”

Section: Stress-caused Diseasesmentioning

confidence: 99%

Diseases of echinoderms

Jangoux

1984

Helgolander Meeresunters

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Diseases of echinoderms are poorly documented. Most reports concern biotic diseases caused by animal agents. While parasites on echinoderms have been described in increasing numbers of papers for more than one century, the host-parasite relationship and the effects of parasitism on echinoderm life-cycles were rarely considered. The parasitic fauna differs markedly according to the echinoderm group concerned, depending on various factors such as feeding-habits or symbiogenesis. Microorganismic diseases undoubtedly occur in echinoderms but they were not investigated until recently. Microorganisms have frequently been assumed to act as agents causing mass mortalities. As for stress-caused diseases, the only -and very preliminary -data available concern almost exclusively those induced by pollution. Since echinoderms are major components of benthic ecosystems, echinoderm diseases may be expected to exert prominent ecological effects.

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“…Early life history stages of marine invertebrates may be particularly sensitive to elevated copper concentrations (Kobayashi, 1980(Kobayashi, , 1990Bielmyer et al, 2005, Table 1). Generally, divalent heavy metals are known to affect cellular calcium homeostasis (Stohs and Bagchi, 1995).…”

Section: Discussionmentioning

confidence: 99%

Measuring Ca2+-signalling at fertilization in the sea urchin Psammechinus miliaris: Alterations of this Ca2+-signal by copper and 2,4,6-tribromophenol

Schäfer

Bickmeyer

Köehler

2009

Comparative Biochemistry and Physiology Part C: Toxicology &

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During fertilization, eggs undergo a temporary rise in the intracellular concentration of free Ca 2+ ions. Using the membrane permeable acetoxymethylester of the fluorescent calcium indicator dye Fura-2, Fura-2 AM, the Ca 2+ -signal at fertilization was not detectable in eggs of the sea urchin Psammechinus miliaris. However, after treatment of the eggs with Fura-2 AM in combination with MK571, an inhibitor for multidrug resistance associated proteins, clear Ca 2+-signals at fertilization could be measured without microinjection of the dye. We used this methodology to detect possible alterations of Ca 2+ -signalling at fertilization by exposure of eggs to environmental pollutants. For this purpose, the heavy metal copper, the bromophenol 2,4,6-tribromophenol, the organic compound bisphenol A and the polycyclic aromatic hydrocarbon phenanthrene were tested for their potential to inhibit fertilization success of P. miliaris. Copper and 2,4,6-tribromophenol showed a dose-dependent effect on fertilization rates of P. miliaris and significantly inhibited fertilization at 6.3 µM Cu 2+ and 1 µM 2,4,6-tribromphenol. Bisphenol A significantly inhibited fertilization success at 438 µM while phenanthrene had no effect up to 56 µM. 6.3 µM copper and 100 µM 2,4,6-tribromophenol significantly increased the Ca 2+ -signal at fertilization. This alteration may contribute to the reduced fertilization rates of P. miliaris after exposure to copper and 2,4,6-tribromophenol.

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Comparative sensitivity of various developmental stages of sea urchins to some chemicals

Cited by 72 publications

References 9 publications

Effects of metal contaminants on the development of the common Antarctic sea urchin Sterechinus neumayeri and comparisons of sensitivity with tropical and temperate echinoids

Effects of metal contaminants on the development of the common Antarctic sea urchin Sterechinus neumayeri and comparisons of sensitivity with tropical and temperate echinoids

Diseases of echinoderms

Measuring Ca2+-signalling at fertilization in the sea urchin Psammechinus miliaris: Alterations of this Ca2+-signal by copper and 2,4,6-tribromophenol

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