In the genus Strongyloides, larval development external to the host is known to be markedly affected by a variety of environmental factors. This investigation focuses on the effect of temperature on Strongyloides ratti. Low temperature (15°C) was shown to favor direct development, producing infective larvae, while high temperature (25°C) favored indirect development, producing free-living females and males. Different courses of development were brought about by either a 16-h temperature stimulus at 15°C or a 6-h temperature stimulus at 25°C. Moreover, eggs were not susceptible to the cold-temperature stimulus of 15°C, while newly hatched larvae were. The results indicate that the developmental course of S. ratti larvae external to the host is determined at a relatively early stage before the first molt.
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Arizono N (1976) Studies on the free-living generations of Strongyloides planiceps Rogers, 1943. II. Effect of temperature on the developmental types. Jap J Parasitol 25:328–335
Barrett J (1968) The effect of temperature on the development and survival of the infective larvae of Strongyloides ratti Sandground, 1925. Parasitology 58:641–651
Fenton A, Paterson S, Viney ME, Gardner MP (2004) Determining the optimal developmental route of Strongyloides ratti: an evolutionarily stable strategy approach. Evolution 58:989–1000
Harvey SG, Gemmill AW, Read AF, Viney ME (2000) The control of morph development in the parasitic nematode Strongyloides ratti. Proc R Soc Lond B 267:2057–2063
Keiser PB, Nutman TB (2004) Strongyloides stercoralis in the immunocompromised population. Clin Microbiol Rev 17:208–217
Kimura E, Shintoku Y, Kadosaka T, Fujiwara M, Kondo S, Itoh M (1999) A second peak of egg excretion in Strongyloides ratti-infected rats: its origin and biological meaning. Parasitology 119:221–226
Minematsu T, Mimori T, Tanaka M, Tada I (1989) The effect of fatty acids on the developmental direction of Strongyloides ratti first-stage larvae. J Helminthol 63:102–106
Nwaorgu OC (1983) The development of the free-living stages of Strongyloides papillosus I. Effect of temperature on the development of the heterogonic and homogonic nematodes in faecal culture. Vet Parasitol 13:213–223
Premvati (1958) Studies on Strongyloides of primates II. Factors determining the “direct” and the “indirect” mode of life. Can J Zool 36:185–195
Shiwaku K, Chigusa Y, Kadosaka T, Kaneko K (1988) Factors influencing development of free-living generations of Storngyloides stercoralis. Parasitology 97:129–138
Taylor KA, Weinstein PP (1990) The effect of oxygen and carbon dioxide on the development of the free-living stages of Strongyloides ratti in axenic culture. J Parasitol 76:545–551
Viney ME (1996) Developmental switching in the parasitic nematode Strongyloides ratti. Proc R Soc Lond B 263:201–208
Viney ME (1999) Exploiting the life cycle of Strongyloides ratti. Parasitol Today 15:231–235
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Minato, K., Kimura, E., Shintoku, Y. et al. Effect of temperature on the development of free-living stages of Strongyloides ratti . Parasitol Res 102, 315–319 (2008). https://doi.org/10.1007/s00436-007-0773-7
- Adult Female
- Larval Development
- Direct Development
- Temperature Stimulus