Regeneration patterns in Naineris aurantiaca (Müller, 1858) (Annelida, Orbiniidae)
Regeneration is a widespread ability in annelids, and each species and developmental stage may present differences in healing and regeneration processes. Some species can completely regenerate the posterior or anterior region or both. Among the orbiniids, regeneration studies are scarce. In Naineri...
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Instituto Oceanográfico da Universidade de São Paulo
2024-04-01
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| Series: | Ocean and Coastal Research |
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| Online Access: | https://www.revistas.usp.br/ocr/article/view/232822 |
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| author | Ricardo Álvarez Estela Pires Giovanna Valério Maikon Di Domenico |
| author_facet | Ricardo Álvarez Estela Pires Giovanna Valério Maikon Di Domenico |
| author_sort | Ricardo Álvarez |
| collection | DOAJ |
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Regeneration is a widespread ability in annelids, and each species and developmental stage may present differences in healing and regeneration processes. Some species can completely regenerate the posterior or anterior region or both. Among the orbiniids, regeneration studies are scarce. In Naineris aurantiaca (Müller, 1858), first species of Naineris described in Brazil, studies about the species’ biology and regeneration capabilities are absent. Aiming to observe the regeneration capabilities of N. aurantiaca and its abnormalities, we sampled the specimens from Lagoa da Sereia Beach, Mel Island, Brazil, among algae tufts and between the mussel’s shells. The experimental design consisted of three different amputations: i) at the end of the thorax—creating treatment AM (anterior and medium) and P (posterior) —; ii) at the chaetiger where branchiae first appear—treatment A (anterior) and MP (medium and posterior) —; iii), and combined—treatment A (anterior), treatment M (medium) and P (posterior). Analysis showed that time (weeks) and treatments (A, AM, M, MP, P) affected survivorship and other features such as length and width. Treatments AM and A had higher mortality rates than P and MP, showing robust anterior regeneration. Treatment M had no survivors. Mean size and width were higher in treatment MP. Remarkable and robust head regeneration and inability to regenerate the gut and the branchial segments suggests that food absorption and gas exchange are key functions in this species.
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| format | Article |
| id | doaj-art-c337d689967745dca338df5a30af7c45 |
| institution | Kabale University |
| issn | 2675-2824 |
| language | English |
| publishDate | 2024-04-01 |
| publisher | Instituto Oceanográfico da Universidade de São Paulo |
| record_format | Article |
| series | Ocean and Coastal Research |
| spelling | doaj-art-c337d689967745dca338df5a30af7c452025-08-20T03:52:25ZengInstituto Oceanográfico da Universidade de São PauloOcean and Coastal Research2675-28242024-04-0172Suppl. 110.1590/2675-2824072.24024Regeneration patterns in Naineris aurantiaca (Müller, 1858) (Annelida, Orbiniidae)Ricardo Álvarez0Estela Pires1Giovanna Valério2Maikon Di Domenico3 Universidade Federal do Paraná Universidade Federal do Paraná Universidade Federal do Paraná Universidade Federal do Paraná Regeneration is a widespread ability in annelids, and each species and developmental stage may present differences in healing and regeneration processes. Some species can completely regenerate the posterior or anterior region or both. Among the orbiniids, regeneration studies are scarce. In Naineris aurantiaca (Müller, 1858), first species of Naineris described in Brazil, studies about the species’ biology and regeneration capabilities are absent. Aiming to observe the regeneration capabilities of N. aurantiaca and its abnormalities, we sampled the specimens from Lagoa da Sereia Beach, Mel Island, Brazil, among algae tufts and between the mussel’s shells. The experimental design consisted of three different amputations: i) at the end of the thorax—creating treatment AM (anterior and medium) and P (posterior) —; ii) at the chaetiger where branchiae first appear—treatment A (anterior) and MP (medium and posterior) —; iii), and combined—treatment A (anterior), treatment M (medium) and P (posterior). Analysis showed that time (weeks) and treatments (A, AM, M, MP, P) affected survivorship and other features such as length and width. Treatments AM and A had higher mortality rates than P and MP, showing robust anterior regeneration. Treatment M had no survivors. Mean size and width were higher in treatment MP. Remarkable and robust head regeneration and inability to regenerate the gut and the branchial segments suggests that food absorption and gas exchange are key functions in this species. https://www.revistas.usp.br/ocr/article/view/232822Morphological variationPolychaeteBody reconstructionWormRegeneration experiment |
| spellingShingle | Ricardo Álvarez Estela Pires Giovanna Valério Maikon Di Domenico Regeneration patterns in Naineris aurantiaca (Müller, 1858) (Annelida, Orbiniidae) Ocean and Coastal Research Morphological variation Polychaete Body reconstruction Worm Regeneration experiment |
| title | Regeneration patterns in Naineris aurantiaca (Müller, 1858) (Annelida, Orbiniidae) |
| title_full | Regeneration patterns in Naineris aurantiaca (Müller, 1858) (Annelida, Orbiniidae) |
| title_fullStr | Regeneration patterns in Naineris aurantiaca (Müller, 1858) (Annelida, Orbiniidae) |
| title_full_unstemmed | Regeneration patterns in Naineris aurantiaca (Müller, 1858) (Annelida, Orbiniidae) |
| title_short | Regeneration patterns in Naineris aurantiaca (Müller, 1858) (Annelida, Orbiniidae) |
| title_sort | regeneration patterns in naineris aurantiaca muller 1858 annelida orbiniidae |
| topic | Morphological variation Polychaete Body reconstruction Worm Regeneration experiment |
| url | https://www.revistas.usp.br/ocr/article/view/232822 |
| work_keys_str_mv | AT ricardoalvarez regenerationpatternsinnainerisaurantiacamuller1858annelidaorbiniidae AT estelapires regenerationpatternsinnainerisaurantiacamuller1858annelidaorbiniidae AT giovannavalerio regenerationpatternsinnainerisaurantiacamuller1858annelidaorbiniidae AT maikondidomenico regenerationpatternsinnainerisaurantiacamuller1858annelidaorbiniidae |