Dietary effects on growth, reproduction, body composition and stress resistance in the terrestrial isopods Oniscus asellus and Porcellio scaber
Open accessAbstract
Summary: The effect of differences in food composition on growth, body composition and cold tolerance of the isopods Porcellio scaber (Latreille) and Oniscus asellus (L.) has been studied. The effect on reproduction of P. scaber was included. Total lipid and protein content remained the same in O. asellus , given food with a nitrogen content of 2.4, 2.5, 2.8 or 3.1% for 8 weeks. Those fed on 3.1% N gained significantly more weight than those fed on 2.4, 2.5 or 2.8% N. Cold tolerance after a period of low temperature acclimation could not be tested, due to high mortality at the subzero treatment. Haemolymph osmolality increased after the winter acclimation for all food treatments. Juvenile P. scaber , given food of 1.8, 2.5 or 3.1% N, showed no difference in growth over 18 weeks, nor in body composition over 14 weeks. Diet did not influence cold tolerance ability and haemolymph osmolality remained the same with changing cold tolerance of the animals. Gravid females of P. scaber were separated to examine the effect of diet on reproduction. Diet did not influence the number of juveniles, nor their weight. In all food treatments, a significant correlation was found between the weight of the female and the number and weight of her offspring.
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References 40 · Cited by 8
- Authors
- Lavy, D., Van Rijn, M. J., Zoomer, H. R., & Verhoef, H. A.
- Affiliations
- Vrije Universiteit Amsterdam (NL)
- Corresponding author
- Verhoef, H. A.
- Venue
- Physiological Entomology
- Publisher
- Wiley
- Published
- 2001-03
- Volume
- 26
- Issue
- 1
- Pages
- 18-25
- ISSN
- 0307-6962 (ISSN-L)
- 1365-3032
- OpenAlex
- W2977623635
- Cited by
- 8
- References
- 40
- Citations by year
- 2021: 4 · 2015: 1
- FWCI
- 0.39
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Physiological Entomology (publishedVersion)
- Funders
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek
- Topics
- Physical Sciences › Environmental Science › Ecology › Crustacean biology and ecology
- Physical Sciences › Environmental Science › Ecology › Physiological and biochemical adaptations
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Aquaculture Nutrition and Growth
- Keywords
- Oniscus asellus, Porcellio scaber, terrestrial isopods, diet composition, growth, body composition, cold tolerance, stress tolerance, reproduction, hemolymph osmolality, winter acclimation, juvenile growth, maternal weight, offspring size
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