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The life cycle of Dichelyne (Cucullanellus) minutus (Nematoda: Cucullanidae)
Køie, M. (2001). The life cycle of Dichelyne (Cucullanellus) minutus (Nematoda: Cucullanidae). Folia Parasitol. 48: 304-310
In: Folia Parasitologica. Academy of Sciences of the Czech Republic: Ceské Budejovice. ISSN 0015-5683, more
Peer reviewed article  

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  • Køie, M.

    Mature specimens of the nematode Dichelyne (Cucullanellus) minutus (Rudolphi, 1819) (Ascaridida, Cucullanidae, Seuratoidea) were obtained from the intestine of flounder Platichthys flesus (L.) caught in the Øresund, Denmark. Plaice Pleuronectes platessa L. and common goby Pomatoschistus microps (Kröyer) also harbour this species. The eggs embryonate on the seabottom. Larvae about 440 µm long, and believed to be in their third stage, hatch from the eggs. These larvae are not directly infective to flounders or gobies. The polychaete Nereis diversicolor O.F. Müller acts as obligatory intermediate host. Experimental infections showed that larvae >600 µm long and provided with a chitinous tooth survived in flounder and common goby. The third-stage larvae moult to fourth-stage larvae in the fish gut wall. Mature worms occur in the lumen of the anterior part of the intestine. All developmental stages may be transferred from one flounder to another; thus the flounder may acquire the parasite also by devouring infected gobies.

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