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  Gender differences and individual variation in the immune system of the scorpionfly Panorpa vulgaris (Insecta: Mecoptera).

Kurtz, J., Wiesner, A., Götz, P., & Sauer, K. P. (2000). Gender differences and individual variation in the immune system of the scorpionfly Panorpa vulgaris (Insecta: Mecoptera). Developmental and Comparative Immunology, 24(1), 1-12.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-DFEB-3 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-DFEC-1
Genre: Journal Article

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Kurtz_2000.pdf (Publisher version), 431KB
 
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 Creators:
Kurtz, Joachim1, Author              
Wiesner, Andreas, Author
Götz, Peter, Author
Sauer, Klaus Peter, Author
Affiliations:
1Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445634              

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Free keywords: invertebrate immunity; phagocytosis; lysozyme; disease resistance; gender differences; hemocytes; immunocompetence; sexual selection
 Abstract: From investigations of the vertebrate immune system gender specific differences in individual immunocompetence are well known. In general, females seem to possess more powerful immune systems than males. In invertebrates, the situation is much less clear. Therefore, we investigated the immune system of an invertebrate species, the scorpionfly Panorpa vulgaris. We found a high degree of individual variation in both traits studied, the lysozyme-like antibacterial activity of hemolymph and the capacity for in vitro phagocytosis of artificial particles. These two immune traits were positively correlated. As expected, hemolymph derived from females had higher lysozyme-like activity and hemocytes from females phagocytosed more particles. The difference in phagocytosis was mainly based on higher total hemocyte counts and higher proportions of phagocytically active cells in females, while the average number of ingested particles per active phagocyte was not significantly different. The observed gender differences are discussed in the contest of reproductive strategies and parasite-mediated sexual selection.

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Language(s): eng - English
 Dates: 2000-01
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 118589
Other: S0145-305X(99)00057-9
Other: 1832/S 37479
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Title: Developmental and Comparative Immunology
Source Genre: Journal
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Pages: - Volume / Issue: 24 (1) Sequence Number: - Start / End Page: 1 - 12 Identifier: ISSN: 0145-305X