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dc.contributor.authorMolina-Ramírez, Axayacatl
dc.contributor.authorCáceres, Carlos
dc.contributor.authorRomero-Romero, Sonia
dc.contributor.authorBueno, Juan
dc.contributor.authorGonzález-Gordillo, J. Ignacio
dc.contributor.authorIrigoien, Xabier
dc.contributor.authorSostres, Jorge
dc.contributor.authorBode, Antonio
dc.contributor.authorMompeán, Carmen
dc.contributor.authorFernández Puelles, Mariluz
dc.contributor.authorEchevarria, Fidel
dc.contributor.authorDuarte, Carlos M.
dc.contributor.authorAcuña, José Luis
dc.date.accessioned2016-01-19T14:45:09Z
dc.date.available2016-01-19T14:45:09Z
dc.date.issued2015-05-19
dc.identifier.citationMolina-Ramírez A, Cáceres C, Romero-Romero S, Bueno J, González-Gordillo JI, et al. (2015) Functional differences in the allometry of the water, carbon and nitrogen content of gelatinous organisms. J Plankton Res 37: 989–1000. Available: http://dx.doi.org/10.1093/plankt/fbv037.
dc.identifier.issn0142-7873
dc.identifier.issn1464-3774
dc.identifier.doi10.1093/plankt/fbv037
dc.identifier.urihttp://hdl.handle.net/10754/594283
dc.description.abstractWe have supplemented available, concurrent measurements of fresh weight (W, g) and body carbon (C, g) (46 individuals, 14 species) and nitrogen (N, g) (11 individuals, 9 species) of marine gelatinous animals with data obtained during the global ocean MALASPINA 2010 Expedition (totalling 267 individuals and 33 species for the W versus C data; totalling 232 individuals and 31 species for the N versus C data). We then used those data to test the allometric properties of the W versus C and N versus C relationships. Overall, gelatinous organisms contain 1.13 ± 1.57% of C (by weight, mean ± SD) in their bodies and show a C:N of 4.56 ± 2.46, respectively, although estimations can be improved by using separate conversion coefficients for the carnivores and the filter feeders. Reduced major axis regression indicates that W increases isometrically with C in the carnivores (cnidarians and ctenophores), implying that their water content can be described by a single conversion coefficient of 173.78 gW(g C)-1, or a C content of 1.17 ± 1.90% by weight, although there is much variability due to the existence of carbon-dense species. In contrast, W increases more rapidly than C in the filter feeders (salps and doliolids), according to a power relationship W = 446.68C1.54. This exponent is not significantly different from 1.2, which is consistent with the idea that the watery bodies of gelatinous animals represent an evolutionary response towards increasing food capture surfaces, i.e. a bottom-up rather than a top-down mechanism. Thus, the available evidence negates a bottom-up mechanism in the carnivores, but supports it in the filter feeders. Last, N increases isometrically with C in both carnivores and filter feeders with C:N ratios of 3.89 ± 1.34 and 4.38 ± 1.21, respectively. These values are similar to those of compact, non-gelatinous organisms and reflect a predominantly herbivorous diet in the filter feeders, which is confirmed by a difference of one trophic level between filter feeders and carnivores, according to stable N isotope enrichment data. © 2015 The Author.
dc.publisherOxford University Press (OUP)
dc.subjectallometry
dc.subjectbody weight
dc.subjectcarbon content
dc.subjectgelatinous organisms
dc.subjectwater content
dc.titleFunctional differences in the allometry of the water, carbon and nitrogen content of gelatinous organisms
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentMarine Science Program
dc.contributor.departmentRed Sea Research Center (RSRC)
dc.identifier.journalJournal of Plankton Research
dc.contributor.institutionDepartamento Bos, Universidad de Oviedo, Catedrático Rodrigo Uría, SN, Oviedo, Spain
dc.contributor.institutionDepartamento de Biologia, Cesam-Centro de Estudos Do Ambiente e Do Mar, Universidade de Aveiro, Aveiro, Portugal
dc.contributor.institutionCampus de Excelencia Internacional Del Mar (CEIMAR), Dpto de Biología, Universidad de Cádiz, Avd República Saharaui S/N, Puerto Real, Spain
dc.contributor.institutionCentro Oceanográfico de A Coruña, Instituto Español de Oceanografía, Apdo. 130, Coruña, Spain
dc.contributor.institutionCentro Oceanográfico de Baleares, Muelle de Poniente, Instituto Español de Oceanografía, S/N Apdo. 291, Palma De Mallorca, Spain
dc.contributor.institutionInstituto Mediterráneo de Estudios Avanzados-Consejo Superior de Investigaciones, Calle Miquel Marqués, 21, Esporles, Islas Baleares, Spain
kaust.personIrigoien, Xabier
kaust.personDuarte, Carlos M.
dc.date.published-online2015-05-19
dc.date.published-print2015-09


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