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Is exposure temperature a confounding factor for the assessment of reproductive parameters of New Zealand mudsnails Potamopyrgus antipodarum (Gray)?

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Title: Is exposure temperature a confounding factor for the assessment of reproductive parameters of New Zealand mudsnails Potamopyrgus antipodarum (Gray)?
Authors: Gust, M.1,2, Buronfosse, T.3, André, C.4, Mons, R.1, Gagné, F.4, Garric, J.1 jeanne.garric@cemagref.fr
Source: Aquatic Toxicology. Jan2011, Vol. 101 Issue 2, p396-404. 9p.
Subjects: New Zealand mudsnail, Pollution, Toxicity testing, Physiological effects of temperature, Steroids, Vitronectin, Reproduction, Biomarkers, Embryology
Abstract: Abstract: Potamopyrgus antipodarum is a promising test organism often used in ecotoxicology testing, both in laboratory and in field exposure experiments. It has been recommended for use in the development of an OECD reproduction test. However, exposure temperature is important to take into account when assessing reproduction and related biomarkers, because it can act as a confounding factor inducing variability in physiological values. The effect of three environmentally realistic exposure temperatures (8, 16 and 24°C) was examined with respect to the number of neonates born, the number of embryos in the brood pouch and the duration of embryonic development. We also measured additional markers likely to be related to the modulation of reproductive performance, such as vertebrate-like sex steroid, energy status and vitellin-like proteins. Exposure temperature had a significant effect on reproduction in P. antipodarum, on both the duration of embryonic development and the quantity of embryos and neonates. The consequences of these observations must not be neglected when using this species in laboratory and field experiments. This study determined suitable temperatures for field experiments and a mean duration for embryonic development independent of temperature. In addition to steroid levels, energy status and Vn-like protein levels were only slightly modified by exposure temperature between 8 and 24°C. Thus, they can be easily implemented and their variations related to anthropogenic factors during field exposure of mudsnails. [ABSTRACT FROM AUTHOR]
Copyright of Aquatic Toxicology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 57296937
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Is exposure temperature a confounding factor for the assessment of reproductive parameters of New Zealand mudsnails Potamopyrgus antipodarum (Gray)?
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  Data: <searchLink fieldCode="JN" term="%22Aquatic+Toxicology%22">Aquatic Toxicology</searchLink>. Jan2011, Vol. 101 Issue 2, p396-404. 9p.
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  Data: <searchLink fieldCode="DE" term="%22New+Zealand+mudsnail%22">New Zealand mudsnail</searchLink><br /><searchLink fieldCode="DE" term="%22Pollution%22">Pollution</searchLink><br /><searchLink fieldCode="DE" term="%22Toxicity+testing%22">Toxicity testing</searchLink><br /><searchLink fieldCode="DE" term="%22Physiological+effects+of+temperature%22">Physiological effects of temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Steroids%22">Steroids</searchLink><br /><searchLink fieldCode="DE" term="%22Vitronectin%22">Vitronectin</searchLink><br /><searchLink fieldCode="DE" term="%22Reproduction%22">Reproduction</searchLink><br /><searchLink fieldCode="DE" term="%22Biomarkers%22">Biomarkers</searchLink><br /><searchLink fieldCode="DE" term="%22Embryology%22">Embryology</searchLink>
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  Data: Abstract: Potamopyrgus antipodarum is a promising test organism often used in ecotoxicology testing, both in laboratory and in field exposure experiments. It has been recommended for use in the development of an OECD reproduction test. However, exposure temperature is important to take into account when assessing reproduction and related biomarkers, because it can act as a confounding factor inducing variability in physiological values. The effect of three environmentally realistic exposure temperatures (8, 16 and 24°C) was examined with respect to the number of neonates born, the number of embryos in the brood pouch and the duration of embryonic development. We also measured additional markers likely to be related to the modulation of reproductive performance, such as vertebrate-like sex steroid, energy status and vitellin-like proteins. Exposure temperature had a significant effect on reproduction in P. antipodarum, on both the duration of embryonic development and the quantity of embryos and neonates. The consequences of these observations must not be neglected when using this species in laboratory and field experiments. This study determined suitable temperatures for field experiments and a mean duration for embryonic development independent of temperature. In addition to steroid levels, energy status and Vn-like protein levels were only slightly modified by exposure temperature between 8 and 24°C. Thus, they can be easily implemented and their variations related to anthropogenic factors during field exposure of mudsnails. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Aquatic Toxicology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.aquatox.2010.11.013
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      – Code: eng
        Text: English
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        PageCount: 9
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      – SubjectFull: New Zealand mudsnail
        Type: general
      – SubjectFull: Pollution
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      – SubjectFull: Toxicity testing
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      – SubjectFull: Physiological effects of temperature
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      – SubjectFull: Steroids
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      – SubjectFull: Vitronectin
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      – SubjectFull: Reproduction
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      – SubjectFull: Biomarkers
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      – SubjectFull: Embryology
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      – TitleFull: Is exposure temperature a confounding factor for the assessment of reproductive parameters of New Zealand mudsnails Potamopyrgus antipodarum (Gray)?
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              Text: Jan2011
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