Marine Biology

, Volume 138, Issue 6, pp 1241–1250

Effect of specific dinoflagellate and diatom diets on gamete ultrastructure and fatty acid profiles of the copepod Temora stylifera

  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  

DOI: 10.1007/s002270100547

Cite this article as:
, , et al. Marine Biology (2001) 138: 1241. doi:10.1007/s002270100547

Abstract.

The ultrastructure of Temora stylifera male and female gonads was examined in individuals fed three dinoflagellate and two diatom species which affect copepod hatching success. The results showed that low fertilization success when males were fed the dinoflagellates Prorocentrum micans, Lingulodinium polyedra and Gymnodinium sanguinium was not due to visible ultrastructural anomalies of the spermatozoa. The cellular organization of the sterile spermatozoa was comparable to reproductive cells produced by wild males or by males fed the dinoflagellate Prorocentrum minimum which induced high hatching success. The gonads of T. stylifera females fed the diatoms Thalassiosira rotula and Phaeodactylum tricornutum also appeared normal at the ultrastructural level and comparable to wild females. The fatty acid compositions of the dinoflagellates P. micans and P. minimum were similar, suggesting that the negative effects of three of the dinoflagellates on male fertilization capacity was not related to a lack of any fatty acid. Lipid profiles of the diatoms T. rotula and P. tricornutum also suggest that low hatching success induced by these diatoms was not due to a fatty acid deficiency in the diet. Both algae contained sufficient amounts of polyunsaturated fatty acids (eicosapentaenoic and docosahexaenoic acids), generally considered essential during development.

Copyright information

© Springer-Verlag 2001

Authors and Affiliations

  •  
    • 1
  •  
    • 1
  •  
    • 1
  •  
    • 2
  •  
    • 3
  •  
    • 1
  •  
    • 1
  •  
    • 1
  1. 1.Stazione Zoologica "A. Dohrn", Villa Comunale 80121 Naples, Italy
  2. 2.Alfred Wegener Institute for Polar and Marine Research, P.O. Box 120161, 27515 Bremerhaven, Germany
  3. 3.Station Biologique de Roscoff, CNRS, Place Georges Teissier, 29682 Roscoff, France
  4. 4.Present address: UMR CNRS 5556 "Ecosystèmes Lagunaires" case 093, Université de Montpellier II, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France, e-mail: laabir@crit.univ-montp2.fr, Tel.: +33-4-67144766, Fax.: +33-4-67143719

Personalised recommendations