Survival strategies on a semi-arid island: submersion and desiccation tolerances of fiddler crabs from the Galapagos Archipelago

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Autor(es): dc.contributorUniv Reg Amazon Ikiam-
Autor(es): dc.contributorUniv Northern Iowa-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniv Santa Cecilia-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorCapparelli, Mariana V.-
Autor(es): dc.creatorThurman, Carl L.-
Autor(es): dc.creatorChoueri, Paloma Gusso [UNESP]-
Autor(es): dc.creatorSouza Abessa, Denis Moledo de [UNESP]-
Autor(es): dc.creatorFontes, Mayana Karoline [UNESP]-
Autor(es): dc.creatorNobre, Caio Rodrigues [UNESP]-
Autor(es): dc.creatorMcNamara, John Campbell-
Data de aceite: dc.date.accessioned2022-02-22T00:57:56Z-
Data de disponibilização: dc.date.available2022-02-22T00:57:56Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2020-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s00227-020-03807-6-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/209897-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/209897-
Descrição: dc.descriptionDuring tidal cycles, fiddler crabs undergo alternating periods of submersion and desiccation. We compare physiological and biochemical adjustments to submersion and desiccation challenge in two gelasminids from the Galapagos archipelago: the indigenous Leptuca helleri, and Minuca galapagensis. We examine population distributions and habitat characteristics; survival and hemolymph osmolality after 6 h submersion at several salinities, and after 6 or 12 h desiccation; and oxidative stress responses in the hepatopancreas and gills, accompanying glutathione enzyme antioxidant activities, and lipid peroxidation. We provide an integrated biomarker response index based on oxidative stress in each tissue, condition and species. Leptuca helleri occupies a restricted intertidal niche while M. galapagensis is supralittoral. Burrow density in M. galapagensis declined with increasing salinity and decreasing substrate moisture; L. helleri burrow density showed no correlation. After 6 h submersion, L. helleri survived only at 21 parts per thousand S while M. galapagensis survived from 0 to 42 parts per thousand S. After 6 h desiccation, hemolymph osmolality decreased markedly in L. helleri but increased in M. galapagensis. Antioxidant enzyme activities and lipid peroxidation in the hepatopancreas and gills showed tissue- and species-specific responses to submersion and desiccation challenge. The integrated biomarker response indexes for L. helleri were highest in control crabs, driven by oxidative stress. In M. galapagensis, submersion was the determining factor in both tissues. Minuca galapagensis is a generalist species while Leptuca helleri occupies a more restricted intertidal habitat. The species' respective physiological limitations and flexibilities provide insights into how fiddler crabs might respond to environmental change on semi-arid islands.-
Descrição: dc.descriptionregional offices of the Ministerio del Ambiente de Ecuador (MAE)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionUniv Reg Amazon Ikiam, Fac Ciencias Tierra & Agua, Km 7 Via Muyuna, Tena, Napo, Ecuador-
Descrição: dc.descriptionUniv Northern Iowa, Dept Biol, Cedar Falls, IA 50614 USA-
Descrição: dc.descriptionUniv Estadual Paulista, Campus Litoral Paulista, BR-11380972 Sao Vicente, SP, Brazil-
Descrição: dc.descriptionUniv Santa Cecilia, Dept Ecotoxicol, BR-11045907 Santos, SP, Brazil-
Descrição: dc.descriptionUniv Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Biol, BR-14040901 Ribeirao Preto, SP, Brazil-
Descrição: dc.descriptionUniv Sao Paulo, Ctr Biol Marinha, BR-11600000 Sao Sebastiao, SP, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, Campus Litoral Paulista, BR-11380972 Sao Vicente, SP, Brazil-
Descrição: dc.descriptionregional offices of the Ministerio del Ambiente de Ecuador (MAE): MAE-DNB-CM-2017-0062-IKIAM-
Descrição: dc.descriptionCNPq: CNPq 303613/2017-3-
Descrição: dc.descriptionFAPESP: 2017/04970-5-
Formato: dc.format15-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer-
Relação: dc.relationMarine Biology-
???dc.source???: dc.sourceWeb of Science-
Título: dc.titleSurvival strategies on a semi-arid island: submersion and desiccation tolerances of fiddler crabs from the Galapagos Archipelago-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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