Survival of earthworms exposed to the slug-parasitic nematode Phasmarhabditis hermaphrodita

2003 ◽  
Vol 82 (1) ◽  
pp. 72-74 ◽  
Author(s):  
Sukhbir K. Grewal ◽  
Parwinder S. Grewal
Keyword(s):  
Parasitic Nematode ◽  
Phasmarhabditis Hermaphrodita

scholarly journals Differentiated effects of parasitic nematodes Phasmarhabditis hermaphrodita on slugs of the genus Deroceras and snails of the genus Arion

2005 ◽  
Vol 53 (4) ◽  
pp. 171-176
Author(s):  
Pavlína Šenoldová ◽  
Jiří Rotrekl
Keyword(s):  
Parasitic Nematode ◽  
Nematode Species ◽  
Field Conditions ◽  
Parasitic Nematodes ◽  
The Family ◽  
Snail Family ◽  
Phasmarhabditis Hermaphrodita ◽  
Differentiated Effects

This paper compares efficiency of preparations based on a parasitic nematode species Phasmarhabditis hermaphrodita with a molluscocide containing methiocarb as an effective substance. Parasitic nematodes by the family Agriolimacidae showed a significantly better effect on mortality and reduction of the percentage of damaged plants than the methiocarb-based preparation. Under laboratory and field conditions, the efficiency of parasitic nematodes on the family Agriolimacidae ranged from 84% to 94% and from 81% to 94%, resp., while the percentages of damaged plants were minimal in both cases. The corresponding effects of the methiocarb-based molluscocide were only 35% and 21%, resp. The effect of parasitic P. hermaphrodita nematodes on members of the snail family Arionidae was not demonstrated both under laboratory and field conditons and the mortality was up to 6% with a total defoliation of plants. Under laboratory and field conditions, the mortality of slugs from the genus Arion after the application of methiocarb-based preparation was 53% and 38%, resp. However, the damage of plants was significant and it reached nearly 67% and 60% under laboratory and field conditions, resp.

Movement of the parasitic nematode Phasmarhabditis hermaphrodita in the presence of mucus from the host slug Deroceras reticulatum

2007 ◽  
Vol 41 (2) ◽  
pp. 223-229 ◽  
Author(s):  
Simona Hapca ◽  
John Crawford ◽  
Robert Rae ◽  
Michael Wilson ◽  
Iain Young
Keyword(s):  
Parasitic Nematode ◽  
Deroceras Reticulatum ◽  
Phasmarhabditis Hermaphrodita

scholarly journals The gastropod parasitic nematode Phasmarhabditis hermaphrodita does not affect non-target freshwater snails Lymnaea stagnalis, Bithynia tentaculata and Planorbarius corneus

Nematology ◽  
2015 ◽  
Vol 17 (6) ◽  
pp. 679-683 ◽  
Author(s):  
Gemma Whitaker ◽  
Robbie Rae
Keyword(s):  
Parasitic Nematode ◽  
Lymnaea Stagnalis ◽  
Biological Control Agent ◽  
Freshwater Snail ◽  
Control Agent ◽  
Snail Species ◽  
Planorbarius Corneus ◽  
Bithynia Tentaculata ◽  
In The Wild ◽  
Phasmarhabditis Hermaphrodita

Phasmarhabditis hermaphrodita is a lethal parasite of several slug and snail species that has been formulated into a biological control agent. However, the complete host range of this nematode is poorly understood, in particular its potential to affect non-target aquatic snail species. Here we exposed three species of juvenile and adult freshwater snail (Lymnaea stagnalis, Planorbarius corneus and Bithynia tentaculata) to 30 and 150 P. hermaphrodita cm−2 and assessed survival, as well as differences in weight for 66 days. We show that P. hermaphrodita has no effect on the survival of L. stagnalis, P. corneus and B. tentaculata after 66 days of exposure. In summary, we found little evidence of P. hermaphrodita causing mortality to three freshwater snail species at two different life stages and believe that P. hermaphrodita would have little effect on non-target snail species in the wild.

scholarly journals My favourite nematode – Phasmarhabditis hermaphrodita

Nematology ◽  
2019 ◽  
Vol 21 (1) ◽  
pp. 1-4
Author(s):  
Robbie Rae
Keyword(s):  
Biological Control ◽  
Parasitic Nematode ◽  
Biological Control Agent ◽  
Control Agent ◽  
Genetic Evolution ◽  
The Future ◽  
Terrestrial Gastropod ◽  
Phasmarhabditis Hermaphrodita

Summary The terrestrial gastropod parasitic nematode Phasmarhabditis hermaphrodita is the only nematode that evolved to infect and kill slugs and snails. Because of this ability it has been formulated into a biological control agent for gardeners. In this Forum article, the author outlines several reasons why P. hemaphrodita is a nematode that is worth studying, including its ability to control the behaviour and kill slug hosts. The author discusses how P. hemaphrodita is being developed as a model nematode to be used to study the genetic evolution of parasitism, as well as potential research ideas for the future.

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