Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 7

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  Nematomorpha
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

The life cycle of horsehair worms [Nematomorpha]

100%
Schmidt-Rhaesa A.
Acta Parasitologica
|
2001
|
tom 46
|
nr 3
2

South American species of Paragordius Camerano, 1897 [Gordiida, Nematomorpha], with redescription of Paragordius minusculus and a description of a new species

100%
Zanca F., De Villalobos C.
Acta Parasitologica
|
2006
|
tom 51
|
nr 3
Paragordius is a genus of Gordiida with a worldwide distribution, but with a scarce specific diversity. Sixteen species of the genus Paragordius have been described so far. In many cases, as with the other genera of Gordiida, the original descriptions of the species are insufficient due to the limitations of the techniques employed. In this work the holotypes of P. minusculus and P. esavianus are redescribed by scanning electron microscopy (SEM), a new species of Paragordius is described, the distribution for P. esavianus and P. varius is enlarged and a new host record of P. esavianus is presented.
3

Effect of extreme temperature on egg development larval and adult survival of Chordodes nobilii Camerano, 1901 [Gordiida, Nematomorpha]

84%
Achiorno C. L., Ferrari L., De Villalobos C.
Acta Parasitologica
|
2008
|
tom 53
|
nr 4
On the basis of experimental studies we analyzed the effect of extreme temperatures on the aquatic free-living phases of the life cycle of Chordodes nobilii (Gordiida, Nematomorpha). Bioassays were performed with eggs, larvae, and adults. Eggs and larvae were exposed to 3°C below zero and 40.5°C; adults were exposed to 3°C below zero and to 38.5°C and 40.5°C. The results showed that egg development was inhibited in both tests. Exposed larvae showed a decrease in their infective capacity, which resulted almost null at 40.5°C. Adults exposed to 38.5°C showed mortality ≤10%, at 40.5°C the mortality was 100% and the adult’s mortality at 3°C below zero was 89%. Results indicate that free living stages of Chordodes nobilii are susceptible to extreme temperatures.
4

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

84%
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.
5

Larval survival strategy during winter of Chordodes nobilii Camerano, 1901 [Gordiida, Nematomorpha]

67%
Zanca F., De Villalobos C., Rumi A.
Acta Parasitologica
|
2007
|
tom 52
|
nr 4
There are numerous open questions concerning the life cycle of Gordiida (Nematomorpha), especially about egg development and viability of larvae during winter, when the temperature of freshwater environments where they inhabit is low. On the basis of experimental studies we demonstrate that egg development of Chordodes nobilii takes 20–25 days at 22°C and 45–55 days at 5°C. We also observed that larvae of C. nobilii obtained from egg strings at 5°C and maintained at that temperature during six months remained inside their egg shells as a survival strategy.
6

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

67%
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).
7

The occurrence of epibionts of Gordiida [Nematomorpha] in Catamarca, Argentina

59%
De V. C., Salas L., Zanca F., Atencio A.
Acta Parasitologica
|
2010
|
tom 55
|
nr 3
281-285
The presence of larvae and pupae of the genus Metrichia (Trichoptera, Hydroptilidae), larvae of the genus Macrelmis and Phanocerus (Coleoptera, Elmidae), three diatom genera Achnanthes, Cocconeis, Gomphonema, and some specimens of very small diatoms that could not be determined to species or genus level, were recorded for the first time as epibionts for Chordodes brasiliensis (Gordiida, Nematomorpha). Such epibionts were found on the body surface of this species of hairworms, captured from El Tala stream, Catamarca, Argentina.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.