SciELO - Scientific Electronic Library Online

 
vol.71 issue1-2Clostridium perfringes food poisoning author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Memórias do Instituto Oswaldo Cruz

Print version ISSN 0074-0276On-line version ISSN 1678-8060

Mem. Inst. Oswaldo Cruz vol.71 no.1-2 Rio de Janeiro  1973

http://dx.doi.org/10.1590/S0074-02761973000100013 

Helmintos parasitos das espécies Scomberomorus cavalla (Cuvier) e Scomberomorus maculatus (Mitchill) do litoral cearense: Contracaecum fortalezae sp. n. (Nematoda, Ascaridoidea)

Vera Lucia M. Klein1 

Instituto Oswaldo Cruz, Rio de Janeiro, Brasil

RESUMO

De nematódeos encontrados parasitando estômago, intestinos delgado e grosso de Scomberomorus cavalla (Cuv.) e Scomberomorus maculatus (Mitch.) o autor propões para o gênero Contracaecum Railliet et Henry, 1912 uma nova espécie, C. fortalezae sp. n., que mais se aproxima de C. clavatum (Rud., 1809) Baylis, 1920 dela se diferenciando por possuir espículos desiguais, um curto ovejetor, útero opistodelfo, ovos menores e por apresentar em todos exemplares estudados ceco intestinal curto e ceco esofagiano longo.

ABSTRACT

In this paper the author proposes a new species of the genus Contracaecum Railliet et Henry, 1912. Of the species under Contracaecum, Contracaecum clavatum (Rudolphi, 1809) Baylis, 1920 is the nearest to Contracaecum fortalezae sp. n. differing from the latter by the following aspects: The males have unequal spicules. The females have a short ovijector and parallel uteri directed backward and the eggs are smaller. In both sexes the intestinal cecum is always short and the ventricular posterior appendix is always long, while Contracaecum clavatum presents these structures in an inverse way, considering the lenght of them. Besides, the thorn-like formations at the posterior end of the body are different.

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License