Role of temperature and carbonate system variability on a host-parasite system: Implications for the gigantism hypothesis
Biological interactions and environmental constraints alter life-history traits, modifying organismal performances. Trematode parasites often impact their hosts by inducing parasitic castration, frequently correlated with increased body size in the host (i.e., gigantism hypothesis), which is postula...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-08-01
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| Series: | International Journal for Parasitology: Parasites and Wildlife |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S221322441930001X |
| _version_ | 1819028002359476224 |
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| author | M.R. García-Huidobro O. Varas M. George-Nascimento J. Pulgar M. Aldana M.A. Lardies N.A. Lagos |
| author_facet | M.R. García-Huidobro O. Varas M. George-Nascimento J. Pulgar M. Aldana M.A. Lardies N.A. Lagos |
| author_sort | M.R. García-Huidobro |
| collection | DOAJ |
| description | Biological interactions and environmental constraints alter life-history traits, modifying organismal performances. Trematode parasites often impact their hosts by inducing parasitic castration, frequently correlated with increased body size in the host (i.e., gigantism hypothesis), which is postulated to reflect the re-allocation of energy released by the reduction in the reproductive process. In this study, we compared the effect of a trematode species on shell size and morphology in adult individuals of the intertidal mussels Perumytilus purpuratus (>20 mm) collected from two local populations of contrasting environmental regimes experienced in central-southern Chile. Our field data indicates that in both study locations, parasitized mussels evidenced higher body sizes (shell length, total weight and volume) as compared with non-parasitized. In addition, parasitized mussels from the southern location evidenced thinner shells than non-parasitized ones and those collected from central Chile, suggesting geographical variation in shell carbonate precipitation across intertidal habitats of the Chilean coast. In laboratory conditions, mussels collected from a local population in central Chile were exposed to two temperature treatments (12 and 18 °C). Parasitized mussels showed higher growth rates than non-parasitized, regardless of the seawater temperature treatments. However, the metabolic rate was not influenced by the parasite condition or the temperature treatments. Our field and laboratory results support the parasite-induced gigantism hypothesis, and suggest that both the thermal environment and geographic location explain only a portion of the increased body size, while the parasitic condition is the most plausible factor modulating the outcome of this host-parasite interaction. Keywords: Environmental variability, shell, Body size, mussels, parasites, Chilean coast |
| first_indexed | 2024-12-21T05:51:26Z |
| format | Article |
| id | doaj.art-fc8069c134954a688d5cd86acc4155a3 |
| institution | Directory Open Access Journal |
| issn | 2213-2244 |
| language | English |
| last_indexed | 2024-12-21T05:51:26Z |
| publishDate | 2019-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal for Parasitology: Parasites and Wildlife |
| spelling | doaj.art-fc8069c134954a688d5cd86acc4155a32022-12-21T19:13:58ZengElsevierInternational Journal for Parasitology: Parasites and Wildlife2213-22442019-08-019715Role of temperature and carbonate system variability on a host-parasite system: Implications for the gigantism hypothesisM.R. García-Huidobro0O. Varas1M. George-Nascimento2J. Pulgar3M. Aldana4M.A. Lardies5N.A. Lagos6Centro de Investigación e Innovación para el Cambio Climático (CiiCC), Facultad de Ciencias, Universidad Santo Tomás, Ejército 146, Santiago, Chile; Programa de Doctorado en Conservación y Gestión de la Biodiversidad, Facultad de Ciencias, Universidad Santo Tomás, Ejército 146, Santiago, Chile; Corresponding author. Centro de Investigación e Innovación para el Cambio Climático (CiiCC), Facultad de Ciencias, Universidad Santo Tomás, Ejército 146, Santiago, Chile.Departamento de Ecología y Biodiversidad, Facultad de Ciencias de la Vida, Universidad Andres Bello, República 440, Santiago, ChileDepartamento de Ecología, Facultad de Ciencias, Universidad Católica de la Santísima Concepción, Casilla 297, Concepción, ChileDepartamento de Ecología y Biodiversidad, Facultad de Ciencias de la Vida, Universidad Andres Bello, República 440, Santiago, ChileCentro de Investigación e Innovación para el Cambio Climático (CiiCC), Facultad de Ciencias, Universidad Santo Tomás, Ejército 146, Santiago, Chile; Programa de Doctorado en Conservación y Gestión de la Biodiversidad, Facultad de Ciencias, Universidad Santo Tomás, Ejército 146, Santiago, ChileDepartamento de Ciencias, Facultad de Artes Liberales, Universidad Adolfo Ibáñez, Santiago, ChileCentro de Investigación e Innovación para el Cambio Climático (CiiCC), Facultad de Ciencias, Universidad Santo Tomás, Ejército 146, Santiago, ChileBiological interactions and environmental constraints alter life-history traits, modifying organismal performances. Trematode parasites often impact their hosts by inducing parasitic castration, frequently correlated with increased body size in the host (i.e., gigantism hypothesis), which is postulated to reflect the re-allocation of energy released by the reduction in the reproductive process. In this study, we compared the effect of a trematode species on shell size and morphology in adult individuals of the intertidal mussels Perumytilus purpuratus (>20 mm) collected from two local populations of contrasting environmental regimes experienced in central-southern Chile. Our field data indicates that in both study locations, parasitized mussels evidenced higher body sizes (shell length, total weight and volume) as compared with non-parasitized. In addition, parasitized mussels from the southern location evidenced thinner shells than non-parasitized ones and those collected from central Chile, suggesting geographical variation in shell carbonate precipitation across intertidal habitats of the Chilean coast. In laboratory conditions, mussels collected from a local population in central Chile were exposed to two temperature treatments (12 and 18 °C). Parasitized mussels showed higher growth rates than non-parasitized, regardless of the seawater temperature treatments. However, the metabolic rate was not influenced by the parasite condition or the temperature treatments. Our field and laboratory results support the parasite-induced gigantism hypothesis, and suggest that both the thermal environment and geographic location explain only a portion of the increased body size, while the parasitic condition is the most plausible factor modulating the outcome of this host-parasite interaction. Keywords: Environmental variability, shell, Body size, mussels, parasites, Chilean coasthttp://www.sciencedirect.com/science/article/pii/S221322441930001X |
| spellingShingle | M.R. García-Huidobro O. Varas M. George-Nascimento J. Pulgar M. Aldana M.A. Lardies N.A. Lagos Role of temperature and carbonate system variability on a host-parasite system: Implications for the gigantism hypothesis International Journal for Parasitology: Parasites and Wildlife |
| title | Role of temperature and carbonate system variability on a host-parasite system: Implications for the gigantism hypothesis |
| title_full | Role of temperature and carbonate system variability on a host-parasite system: Implications for the gigantism hypothesis |
| title_fullStr | Role of temperature and carbonate system variability on a host-parasite system: Implications for the gigantism hypothesis |
| title_full_unstemmed | Role of temperature and carbonate system variability on a host-parasite system: Implications for the gigantism hypothesis |
| title_short | Role of temperature and carbonate system variability on a host-parasite system: Implications for the gigantism hypothesis |
| title_sort | role of temperature and carbonate system variability on a host parasite system implications for the gigantism hypothesis |
| url | http://www.sciencedirect.com/science/article/pii/S221322441930001X |
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