| Title: | Changes in cuticle structure during growth in two terrestrial isopods (Crustacea: Isopoda: Oniscidea) |
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| Authors: | ID Vittori, Miloš (Author)
ID Vodnik, Katarina (Author)
ID Blejec, Andrej (Author) |
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| Files: |  URL - Source URL, visit https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-64972020000100237&lng=en&nrm=iso&tlng=en
 PDF - Presentation file, download (3,23 MB)
MD5: 288362127BCC86055C1668F30FCD6F2D
URL - Source URL, visit https://doi.org/10.1590/2358-2936e2020041
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  NIB - National Institute of Biology
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| Abstract: | Terrestrial isopods are a successful group of terrestrial crustaceans. Their exoskeletal cuticle has been studied in several species. However, it is not known whether the cuticle of these animals becomes thicker or how its structure changes as the animals grow. We aimed to determine the principles of upscaling of the exoskeletal cuticle during growth in the terrestrial isopods Armadillidium vulgare (Latreille, 1804) and Porcellio scaber Latreille, 1804 with scanning electron microscopy. The tergal cuticle becomes thicker with increasing body length. In A. vulgare, which rolls into a ball in defense against predators, the rate of increase of tergite thickness was greater than in P. scaber, which clings to the substrate when threatened. As the cuticles of both species become thicker, the proportion of the endocuticle in the cuticle increases. There is a strong correlation between cuticle thickness and the thickness of endocuticular lamellae. This indicates that in thicker cuticles, chitin-protein fibers in sequential layers change their orientation by a smaller angle. We found no significant differences in morphometric parameters between the cuticles of A. vulgare and P. scaber when controlling for cuticle thickness. This suggests that known differences in cuticle structure and composition between these two species may result from differences in cuticle thickness.
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| Keywords: | development, exoskeleton, morphometry, ultrastructure, woodlice |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 28.10.2020 |
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| Year of publishing: | 2020 |
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| Number of pages: | str. 1-11 |
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| Numbering: | Vol. 28, e2020041 |
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| PID: | 20.500.12556/DiRROS-21631  |
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| UDC: | 577 |
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| ISSN on article: | 2358-2936 |
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| DOI: | 10.1590/2358-2936e2020041 |
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| COBISS.SI-ID: | 35849475 |
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| Note: | Nasl. z nasl. zaslona;
Opis vira z dne 5. 11. 2020;
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| Publication date in DiRROS: | 04.03.2025 |
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| Views: | 736 |
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| Downloads: | 433 |
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