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Dasyhelea necrophila Spinelli et Rodriguez, 1999 [Diptera, Ceratopogonidae] a new potential paratenic host of Paragordius varius [Leidy, 1851] [Gordiida, Nematomorpha]

100%

Villalobos C., Ronderos M.

Acta Parasitologica

2003

tom 48

nr 3

Nematomorph larvae are known to enter aquatic insect larvae where they can encyst or present a limited development. These paratenic hosts serve only as vehicles to reach the definitive hosts and then complete their life cycle. In this work, through experimental infections it was proved that Dasyhelea necrophila (Ceratopogonidae) larvae can be considered as potential paratenic hosts of Paragordius varius (Nematomorpha) larvae. Although the D. necrophila larvae were infected by ingestion, in one pupa where the parasitic larva entered the respiratory horn it is possible that the penetration could have been performed through one of the spiracles of the respiratory horn. The parasitic larvae did not form cysts covered by a gelatinous substance but presented different levels of melanization.

Paratenic hosts: larval survival strategy of Paragordius varius [Leidy, 1851] [Gordiida, Nematomorpha]

80%

De V. C., Rumi A., Nunez V., Schmidt-Rhaesa A., Zanca F.

Acta Parasitologica

2003

tom 48

nr 2

There are numerous open questions concerning the life cycle of horsehair worms (Nematomorpha), especially about the parasitic phase. Complete development takes place only in a few host species. These hosts, almost exclusively arthropods, may be infected directly or indirectly through a paratenic host which carries larvae and cysts of hairworms and was infected in an aquatic habitat. Even though different aquatic animals have been cited as paratenic hosts, little is known about the viability of the larvae or the cysts inside them. On the basis of experimental infections we demonstrate that the larvae entering a paratenic host (Physella cubensis) do not encyst immediately and that larvae and cysts can infect a second paratenic host (Jenynsia multidentata).

Ograniczanie wyników

2 Acta Parasitologica

1 De V. C.

1 Nunez V.

1 Ronderos M.

1 Rumi A.

1 Schmidt-Rhaesa A.

1 Villalobos C.

1 Zanca F.

2 2003

Wyniki wyszukiwania

Dasyhelea necrophila Spinelli et Rodriguez, 1999 [Diptera, Ceratopogonidae] a new potential paratenic host of Paragordius varius [Leidy, 1851] [Gordiida, Nematomorpha]

Paratenic hosts: larval survival strategy of Paragordius varius [Leidy, 1851] [Gordiida, Nematomorpha]