A Naïve Population of European Oyster Ostrea edulis with Reduced Susceptibility to the Pathogen Bonamia ostreae: Are S-Strategy Life Traits Providing Protection?
| Autor: | María Prado-Álvarez, Tristan Hugh-Jones, Sharon A. Lynch, Grace Flannery, Elaine Brennan, David Hugh-Jones, Sarah C. Culloty, Sian Egerton |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Oyster Haplosporida Ecoimmunology Population Bonamia ostreae Zoology Plant Science 01 natural sciences Host-Parasite Interactions Life history theory 03 medical and health sciences Loch Ryan biology.animal Ostrea Animals Ostrea edulis education Life History Traits Local adaptation education.field_of_study biology 010604 marine biology & hydrobiology biology.organism_classification Fecundity Parasite 030104 developmental biology Scotland Ostrea eduli Marteila refringens Animal Science and Zoology Native flat oyster |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 1557-7023 1540-7063 |
| DOI: | 10.1093/icb/icaa071 |
| Popis: | 12 pages, 1 table, 7 figures European populations of the native flat oyster, Ostrea edulis, have been heavily depleted by two protozoan parasites, Marteila refringens and Bonamia ostreae, with mortalities of up to 90% reported in naïve populations. However, in studies carried out over a 10-year period, researching the parasite–host relationship of B. ostreae and O. edulis in several age cohorts within a naïve O. edulis population from Loch Ryan (LR), Scotland, 1364 specimens were challenged and only 64 (5%), across multiple testing protocols, screened positive for B. ostreae. This article presents a case for the development of S-strategy life traits in the LR population that coincide with enhanced immune function and survival. Oysters are considered typical r-strategists (small in size with fast development and high fecundity) while S-strategists, as outlined in Grime’s (1977) competitor–stress tolerant–ruderal (C–S–R) triangle theory, are characterized by slow growth and investment in the durability of individuals. This study hypothesizes that slower growth and reduced reproductive output in LR oysters has resulted in the investment of an enhanced immune function and reduced susceptibility to B. ostreae that is, r-strategists with S-strategy life traits equates to protection from significant pathogens. The findings presented here within provide a strong case study for local adaptation of energy allocation and provides empirical support for the C–S–R triangle theory in a marine organism This work was supported by EU CRAFT funded study BOLCI(R) [Q5CR-CT-2002-72338] and the EU funded studies SUSFISH [Grant number 244132], and OYSTERRECOVER [Grant number 243583] |
| Databáze: | OpenAIRE |
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