Selenium-induced teratogenicity in Sacramento splittail (Pogonichthys macrolepidotus)

Swee J Teh, Xin Deng, Foo Ching Teh, Silas O. Hung

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Selenium is a potent reproductive and teratogenic environmental contaminant and there are concerns over possible reproductive effects of selenium on the Sacramento splittail (Pogonichthys macrolepidotus) population, a threatened species, in California, USA. In this study, the teratogenic effects of selenium were examined in splittail embryos exposed to 0.0, 5.0, and 15.0 mg l-1 sodium selenite for 48-h at 18.0°C under static conditions, with renewal every 12 h. Embryo development was evaluated daily for abnormalities from initiation of exposure (stage 27) to initiation of exogenous feeding. At the end of evaluation, prelarvae were preserved for histological analysis. There were no significant differences in mortality or hatching success between control and exposed embryos. Exposed fish had pericardial edema and deformities of skeletal tissues (loss of tail, lordosis, scoliosis, and kyphosis). Other histological alterations were limited to dysplasia, hyperplasia and metaplasia of skeletal tissues in the deformed fish. This study showed that a short exposure of embryos during somite development has significant effects on the musculoskeletal development.

Original languageEnglish (US)
Pages (from-to)605-608
Number of pages4
JournalMarine Environmental Research
Volume54
Issue number3-5
DOIs
StatePublished - Sep 2002

Fingerprint

teratogenicity
Selenium
selenium
embryo
embryo (animal)
Fish
Tissue
scoliosis
metaplasia
sodium selenite
threatened species
fish
hyperplasia
edema
selenite
tail
embryogenesis
hatching
abnormality
pollution

Keywords

  • Histopathology
  • Sacramento splittail
  • Selenium
  • Teratogenicity

ASJC Scopus subject areas

  • Aquatic Science
  • Oceanography
  • Environmental Science(all)

Cite this

Selenium-induced teratogenicity in Sacramento splittail (Pogonichthys macrolepidotus). / Teh, Swee J; Deng, Xin; Teh, Foo Ching; Hung, Silas O.

In: Marine Environmental Research, Vol. 54, No. 3-5, 09.2002, p. 605-608.

Research output: Contribution to journalArticle

Teh, Swee J ; Deng, Xin ; Teh, Foo Ching ; Hung, Silas O. / Selenium-induced teratogenicity in Sacramento splittail (Pogonichthys macrolepidotus). In: Marine Environmental Research. 2002 ; Vol. 54, No. 3-5. pp. 605-608.
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