Functional differences in the allometry of the water, carbon and nitrogen content of gelatinous organisms

Handle URI:
http://hdl.handle.net/10754/594283
Title:
Functional differences in the allometry of the water, carbon and nitrogen content of gelatinous organisms
Authors:
Molina-Ramírez, Axayacatl; Cáceres, Carlos; Romero-Romero, Sonia; Bueno, Juan; González-Gordillo, J. Ignacio; Irigoien, Xabier ( 0000-0002-5411-6741 ) ; Sostres, Jorge; Bode, Antonio; Mompeán, Carmen; Fernández Puelles, Mariluz; Echevarria, Fidel; Duarte, Carlos M. ( 0000-0002-1213-1361 ) ; Acuña, José Luis
Abstract:
We 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.
KAUST Department:
Red Sea Research Center (RSRC)
Citation:
Molina-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.
Publisher:
Oxford University Press (OUP)
Journal:
Journal of Plankton Research
Issue Date:
19-May-2015
DOI:
10.1093/plankt/fbv037
Type:
Article
ISSN:
0142-7873; 1464-3774
Appears in Collections:
Articles; Red Sea Research Center (RSRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorMolina-Ramírez, Axayacatlen
dc.contributor.authorCáceres, Carlosen
dc.contributor.authorRomero-Romero, Soniaen
dc.contributor.authorBueno, Juanen
dc.contributor.authorGonzález-Gordillo, J. Ignacioen
dc.contributor.authorIrigoien, Xabieren
dc.contributor.authorSostres, Jorgeen
dc.contributor.authorBode, Antonioen
dc.contributor.authorMompeán, Carmenen
dc.contributor.authorFernández Puelles, Mariluzen
dc.contributor.authorEchevarria, Fidelen
dc.contributor.authorDuarte, Carlos M.en
dc.contributor.authorAcuña, José Luisen
dc.date.accessioned2016-01-19T14:45:09Zen
dc.date.available2016-01-19T14:45:09Zen
dc.date.issued2015-05-19en
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.en
dc.identifier.issn0142-7873en
dc.identifier.issn1464-3774en
dc.identifier.doi10.1093/plankt/fbv037en
dc.identifier.urihttp://hdl.handle.net/10754/594283en
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.en
dc.publisherOxford University Press (OUP)en
dc.subjectallometryen
dc.subjectbody weighten
dc.subjectcarbon contenten
dc.subjectgelatinous organismsen
dc.subjectwater contenten
dc.titleFunctional differences in the allometry of the water, carbon and nitrogen content of gelatinous organismsen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalJournal of Plankton Researchen
dc.contributor.institutionDepartamento Bos, Universidad de Oviedo, Catedrático Rodrigo Uría, SN, Oviedo, Spainen
dc.contributor.institutionDepartamento de Biologia, Cesam-Centro de Estudos Do Ambiente e Do Mar, Universidade de Aveiro, Aveiro, Portugalen
dc.contributor.institutionCampus de Excelencia Internacional Del Mar (CEIMAR), Dpto de Biología, Universidad de Cádiz, Avd República Saharaui S/N, Puerto Real, Spainen
dc.contributor.institutionCentro Oceanográfico de A Coruña, Instituto Español de Oceanografía, Apdo. 130, Coruña, Spainen
dc.contributor.institutionCentro Oceanográfico de Baleares, Muelle de Poniente, Instituto Español de Oceanografía, S/N Apdo. 291, Palma De Mallorca, Spainen
dc.contributor.institutionInstituto Mediterráneo de Estudios Avanzados-Consejo Superior de Investigaciones, Calle Miquel Marqués, 21, Esporles, Islas Baleares, Spainen
kaust.authorIrigoien, Xabieren
kaust.authorDuarte, Carlos M.en
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