Impaired larval development in broods of eelpout ( Zoarces viviparus) in Danish coastal waters
First Online: 26 April 2005 Accepted: 08 November 2004 DOI:
Cite this article as: Strand, J., Andersen, L., Dahllöf, I. et al. Fish Physiol Biochem (2004) 30: 37. doi:10.1007/s10695-004-6003-7 Abstract
Zoarces viviparus), a viviparous fish, were sampled in Danish coastal waters during October and November 2001 and 2002, in ten different areas, which are receiving effluents from cities and industry to more or minor degree. The presence of gross abnormalities in eelpout broods has been suggested to be a useful biomarker of the impact of hazardous substances on fish reproduction in the marine environment as chronic exposure to various substances has the potential to induce severe developmental defects in fish embryos and larvae. Relatively high frequencies of female eelpouts (20–53) with elevated levels (>5) of larvae with developmental defects in the broods were found in four shallow fjords with effluents from larger cities and industry compared to areas. Deformations like spiral or bend shapes of the spinal axis, cranio-facial defects, eye lesions or loss of eyes were the dominating types. In some of␣the areas with the highest incidences of developmental defects, the adults had significantly enlarged livers, which may also be a possible effect caused by contaminant exposure. In two of the areas, relatively high frequencies of the broods contained larvae, which had died late but without any visible developmental defects. These two areas were affected by severe oxygen depletion prior to sampling time suggesting that examination of broods in the eelpout may include not only impact of hazardous substances but also effect of eutrophication-related problems on fish reproduction in the marine environment. Keywords biomonitoring Denmark embryo development fish teratogens viviparous blenny References Bodammer, J.E. 1993 The teratological and pathological effects of contaminants on embryonic and larvae fishes exposed as embryos: a brief review Am. Fish Soc. Symp. 14 77 84 Celander, M., Naf, C., Bromandj, D., Förlin, L. 1994 Temporal aspects of induction of hepatic cytochrome-P450 and conjugating enzymes in the viviparus blenny ( Zoarces viviparus) treated with petroleum-hydrocarbons Aquat Toxicol 29 183 196 CrossRef Christiansen, T., Korsgaard, B., Jespersen, Å. 1998 Induction of vitellogenin synthesis by nonylphenol and 17b-estradiol and effects on the testicular structure in the eelpout Zoarces viviparus Mar. Environ. Res. 46 141 144 CrossRef Davis, W.P. 1997 Evidence for developmental and skeletal responses as potential signals of endocrine disrupting compounds in fishes Rolland, R.M. Gilbertson, M. Peterson, R.E. eds. Chemically Induced Alterations in Functional Development and Reproduction of Fishes. SETAC Press Pensacola FL Detlefsen, V., Westernhagen, H., Cameron, P. 1996 Malformations in North Sea pelagic fish embryos during the period 1984–1995. ICES J Mar. Sci. 53 1024 1035 CrossRef Fischer, P., Rademacher, K., Kils, U. 1992 In situ investigations on the respiration and behaviour of the eelpout Zoarces viviparus under short term hypoxia Mar. Ecol. Prog. 88 181 184 Gercken, J., Sordyl, H. 2002 Intersex in feral marine and freshwater fish from northeastern Germany Mar. Environ. Res. 54 651 655 CrossRef PubMed Götting, K.J. 1976 Forplanzung und oocyten-entwicklung bei der aalmutter ( Zoarces viviparus) (Pisces, Osteichthyes). Helgoländer Wiss Meeresunters. 28 71 89
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