English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/48380
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Comparative energetics during early development of two marine fish species, Solea senegalensis (Kaup) and Sparus aurata (L.)

AuthorsParra-Olea, Gabriela; Yúfera, Manuel
Larval growth
Energetic efficiency
Ingestion rate
Respiration rate
Senegal sole
Solea senegalensis
Gilthead seabream
Sparus aurata
Issue Date15-Jun-2001
PublisherCompany of Biologists
CitationJournal of Experimental Biology 204(12): 2175-2183 (2001)
AbstractGrowth, energy content, ingestion and respiration rates and energetic efficiencies were measured in the larvae of two marine fish (Solea senegalensis and Sparus aurata) whose eggs have a similar diameter (approximately 1mm) and energy content (approximately 1J), but whose larvae reach a quite different mass after the first month of life. Experiments were carried out in populations reared under the same conditions in the laboratory during the first month after hatching. Solea senegalensis grow from hatching to the start of metamorphosis (approximately day 14) at twice the rate of Sparus aurata (specific growth rate for Solea senegalensis 0.25μgday−1; specific growth rate for Sparus aurata 0.12μgday−1). The tissues in Solea senegalensis larvae accumulated energetic reserves that were used during metamorphosis, which occurred during the third week after hatching. Ingestion and respiration rates differed in the two species during the experimental period. Although Solea senegalensis continued eating during metamorphosis, the specific ingestion rates decreased during the process. Nevertheless, no great differences in specific ingestion rates and rates of oxygen consumption were observed when comparing the same larval mass range. Larvae of both species showed an allometric relationship between respiration rate and biomass. The energetic efficiencies calculated in the present study denoted different metabolic patterns in each species. In Solea senegalensis, the energy used for growth increased progressively during the larval (pelagic) period and then, from the first signs of metamorphic transformation, remained almost constant. In this species, the energy allocated to growth was greater than that allocated to metabolic processes. Sparus aurata invested less energy in growth than in metabolic processes and displayed a constant energy allocation throughout the experimental period. During the first month after hatching, Solea senegalensis always allocated more energy for growth than did Sparus aurata.
Description9 páginas, 8 figuras, 4 tablas.
Publisher version (URL)http://jeb.biologists.org/content/204/12/2175.long#content-block
Appears in Collections:(ICMAN) Artículos
Files in This Item:
File Description SizeFormat 
Comparative_energetics_2001.pdf197,03 kBAdobe PDFThumbnail
Show full item record
Review this work

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.