Effect of parental hypoxic exposure on embryonic development of the offspring of two serpulid polychaetes: Implication for transgenerational epigenetic effect.
Mar Pollut Bull
; 74(1): 149-55, 2013 Sep 15.
Article
en En
| MEDLINE
| ID: mdl-23906470
ABSTRACT
Sperm production and motility, fecundity, and egg size, complexity and viability of serpulid polychaetes Hydroides elegans and Hydroides diramphus after 2-week treatment to hypoxia (2 mg O2 l(-1)) was compared with those under normoxia (6 mg O2 l(-1)). Despite reduced fecundity, the effect of parental hypoxic exposure on gamete quality was not discernible for both species. However, regardless of their subsequent dissolved oxygen environment, eggs spawned by H. elegans after hypoxic exposure were found to have lower fertilization success, slower embryonic development and a significantly higher yield of malformed embryos than those with a parental normoxic treatment. In contrast, neither fertilization success nor rate of embryonic development was affected for H. diramphus. The results implied that hypoxia was a potential stress reducing the recruitment of H. elegans through non-adaptive epigenetic effect, whereas H. diramphus was a more tolerant species to survive hypoxic events.
Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Poliquetos
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Embrión no Mamífero
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Eutrofización
/
Epigenómica
Límite:
Animals
Idioma:
En
Revista:
Mar Pollut Bull
Año:
2013
Tipo del documento:
Article
País de afiliación:
China