Effects of environmental and maternally derived methylmercury on the embryonic and larval stages of walleye (Stizostedion vitreum)

Latif, Muhammad; Bodaly, R. A.; Johnston, Thomas A.; Fudge, R. J. P.

doi:10.1016/s0269-7491(99)00330-9

Cited by 85 publications

(49 citation statements)

References 31 publications

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“…Mercury is a contaminant of particular concern due to its prevalence in aquatic systems, known toxicity, and ability to be transferred from a female to her offspring [1][2][3]. The highly toxic organic form, methylmercury (MeHg), readily bioaccumulates and generally comprises a high percentage of the Hg transferred from female to offspring [4][5][6]. Moreover, exposure to maternally transferred Hg may be more detrimental than dietary or environmental exposure because offspring are subjected to contaminants during sensitive developmental stages [7].…”

Section: Introductionmentioning

confidence: 99%

High levels of maternally transferred mercury do not affect reproductive output or embryonic survival of northern watersnakes (Nerodia sipedon)

Chin

Willson

Cristol

et al. 2013

Enviro Toxic and Chemistry

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Abstract-Maternal transfer is an important exposure pathway for contaminants because it can directly influence offspring development. Few studies have examined maternal transfer of contaminants, such as mercury (Hg), in snakes, despite their abundance and high trophic position in many ecosystems where Hg is prevalent. The objectives of the present study were to determine if Hg is maternally transferred in northern watersnakes (Nerodia sipedon) and to evaluate the effects of maternal Hg on reproduction. The authors captured gravid female watersnakes (n ¼ 31) along the South River in Waynesboro, Virginia, USA, where an extensive Hg-contamination gradient exists. The authors measured maternal tissue and litter Hg concentrations and, following birth, assessed (1) reproductive parameters (i.e., litter size and mass, neonate mass); (2) rates of infertility, death during development, stillbirths, malformations, and runts; and (3) the overall viability of offspring. Mercury concentrations in females were strongly and positively correlated with concentrations in litters, suggesting that N. sipedon maternally transfer Hg in proportion to their tissue residues. Maternal transfer resulted in high concentrations (up to 10.10 mg/kg dry wt total Hg) of Hg in offspring. The authors found little evidence of adverse effects of Hg on these measures of reproductive output and embryonic survival, suggesting that N. sipedon may be more tolerant of Hg than other vertebrate species. Given that this is the first study to examine the effects of maternally transferred contaminants in snakes and that the authors did not measure all reproductive endpoints, further research is needed to better understand factors that influence maternal transfer and associated sublethal effects on offspring. Environ. Toxicol. Chem. 2013;32:619-626. # 2012 SETAC

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Section: Introductionmentioning

confidence: 99%

High levels of maternally transferred mercury do not affect reproductive output or embryonic survival of northern watersnakes (Nerodia sipedon)

Chin

Willson

Cristol

et al. 2013

Enviro Toxic and Chemistry

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“…Two important changes are as follows: i) the decrease in dissolved oxygen levels (Hecky et al, 1994;Wanink et al, 2001) and ii) an increase of heavy metal concentrations in the lake (Kishe and Machiwa, 2003). Both can interfere with the development of fish embryos (Yediler and Jacobs, 1995;Weis and Weis, 1995a,b;Latif et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Developmental stages until hatching of the Lake Victoria cichlid Haplochromis piceatus (Teleostei: Cichlidae)

Jong

Witte

Richardson

2009

Journal of Morphology

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Because little is known about embryonic developmental stages in any haplochromine cichlid, we describe here a series of normal stages of the Lake Victoria cichlid Haplochromis piceatus. We collected 273 embryos and scored them for 47 morphological characters. The result was an illustrated series of 12 stages from embryonic shield until hatching based on live, fixed, and histological material. We defined each stage according to a single ''key'' character that applied to all embryos of that stage. Other characters forming part of the stage descriptions were not necessarily present in all embryos of a stage. We compare our findings with published studies of other freshwater teleosts and find wide variation in staging systems. Our data will form a baseline for further research on cichlid development.

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“…Morphological anomalies are common in reared fish but rare in natural populations from undisturbed ecosystems (Dahlberg, 1970;Daoulas et al, 1991;Da Cunha and Antunes, 1999) and many authors have hypothesized a relationship between skeletal anomalies and environmental conditions (Dahlberg, 1970;Bengtsson, 1979Bengtsson, , 1988Karr, 1981;Sloof, 1982;Bengtsson et al, 1985Bengtsson et al, , 1988Hardig et al, 1988;Mayer et al, 1988;O'Connor and Huggett, 1988;Westeinhagen et al, 1988;Haya, 1989;Weigand et al, 1989;Weis and Weis, 1989;Carls and Rice, 1990;Fausch et al, 1990;Lindsejöö and Thulin, 1992;Oberdoff and Hughes, 1992;Whittle et al, 1992;Von Westernhagen and Dethlefsen, 1997;Kirchhoff et al, 1999). Consequently, skeletal anomalies have been recently used as indicators or biomarkers of pollution stress in fish (Savvaitova et al, 1995;Svanberg, 1996;Svanberg and Bengtsson, 1996;Wilson and Tillitt, 1996;Ewald, 1999;Karen et al, 2001;Latif et al, 2001;Pastva et al, 2001;Klumpp et al, 2002;Haga et al, 2003) as terata are considered as permanent biomarkers of toxicity, i.e. they are utilized to reliably identify and evaluate the impact of selenium on fish populations (Lemly, 1997(Lemly, , 2002 or in environmental impact studies by the Swedish Environmental Protection Board ...…”

Section: Introductionmentioning

confidence: 99%

Biological monitoring of wild thicklip grey mullet (Chelon labrosus), golden grey mullet (Liza aurata), thinlip mullet (Liza ramada) and flathead mullet (Mugil cephalus) (Pisces: Mugilidae) from different Adriatic sites: meristic counts and skeletal anomalies

Boglione

Costa

Giganti

et al. 2006

Ecological Indicators

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This paper reports on a part of PRISMA project, funded by the Italian Ministry of Education, University and Research (M.U.R.S.T.), involving the biomonitoring of fish populations in two different Adriatic Sea sites by using some integrated descriptors at organismic level (skeletal anomalies and meristic count variation). Given the scarcity of up-to-date data on biology, physical and chemical oceanography, and environmental geophysics, as well on the degree of pollution of this Sea, the goal of the project was to contribute at enhancing the knowledge on environmental biology of Adriatic Sea. In particular, this part of the project analyzed different samplings of some mullets species for the presence of skeletal malformations under the hypothesis that stressed environment should induce alteration in skeletal development pattern in fish, as indicated by many authors. So, the investigation on mullets skeletal structures was utilized to monitor two different Adriatic Sea sites, where exhaustive information (chemical analysis of water and sediment, i.e.) on environmental conditions lack.We observed a total of 2169 individuals, 79% of which were fry and the remainder sub-adults, collected during the seasonal migration in freshwater (spring and autumn 1997) by purse-seine. Chelon labrosus accounted for 18% of the samples, Liza aurata 24%, Liza ramada 22% and Mugil cephalus 36%. Fish were sampled in two Adriatic sites, Sacca di Goro (northern Italy, Po River delta) and Lake Lesina (southern Italy). Other samplings from Tyrrhenian Sea (Fiumicino, Tiber river mouth) and from an aquaculture facility (Grosseto) were used in order to obtain additional information on skeletal plasticity of Mugilidae. Observations included meristic counts and skeletal anomalies and some multi-parametric analyses were performed on the data set. The results showed significant differences among the type and rate of skeletal anomalies observed in the fish samples: as far as Adriatic samples are concerned, higher malformation charge was observed in the Sacca di Goro individuals than in Lesina ones. Further, L. aurata showed a non-specific skeletal pattern and the lowest frequency of deformed individual (8.6% of total

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Effects of environmental and maternally derived methylmercury on the embryonic and larval stages of walleye (Stizostedion vitreum)

Cited by 85 publications

References 31 publications

High levels of maternally transferred mercury do not affect reproductive output or embryonic survival of northern watersnakes (Nerodia sipedon)

High levels of maternally transferred mercury do not affect reproductive output or embryonic survival of northern watersnakes (Nerodia sipedon)

Developmental stages until hatching of the Lake Victoria cichlid Haplochromis piceatus (Teleostei: Cichlidae)

Biological monitoring of wild thicklip grey mullet (Chelon labrosus), golden grey mullet (Liza aurata), thinlip mullet (Liza ramada) and flathead mullet (Mugil cephalus) (Pisces: Mugilidae) from different Adriatic sites: meristic counts and skeletal anomalies

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