Energy balance, gonad development and biochemical composition in the clam Ruditapes decussatus

This study evaluates the influence of different states of energy balance, positive and negative, on the accumulation and utilisation of energy reserves during the period of gonad development in the clam Ruditapes decussatus (L.). Our results show a clear sexual differentiation in the biochemical com...

Full description

Bibliographic Details
Authors: Pérez-Camacho, Alejandro, Delgado, Marina, Fernández-Reiriz, María José, Labarta, U.
Format: article
Publication Date:2003
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/312686
Online Access:http://hdl.handle.net/10261/312686
Access Level:Open access
Keyword:Centro Oceanográfico de A Coruña
Acuicultura
id ES_ff5dd5bf4b8722b623dec9b292bbeb5f
oai_identifier_str oai:digital.csic.es:10261/312686
network_acronym_str ES
network_name_str España
repository_id_str
spelling Energy balance, gonad development and biochemical composition in the clam Ruditapes decussatusPérez-Camacho, AlejandroDelgado, MarinaFernández-Reiriz, María JoséLabarta, U.Centro Oceanográfico de A CoruñaAcuiculturaThis study evaluates the influence of different states of energy balance, positive and negative, on the accumulation and utilisation of energy reserves during the period of gonad development in the clam Ruditapes decussatus (L.). Our results show a clear sexual differentiation in the biochemical composition of the clams. The differences were associated with gonad development and were particularly evident in proteins and lipids. These findings imply that separation of the sexes for studying variations in the biochemical composition of sexually developed specimens is essential, and thus questions the results of previous studies in which both sexes were analysed simultaneously. Gonad development occurs under conditions of both positive and negative energy balance, and permits the development of a model of the utilisation of reserves during gonad development, which is closely linked to the clam’s energy balance. Under conditions of positive energy balance, the amount of food ingested provides sufficient energy for both metabolic consumption and the accumulation of reserves. The absolute value of all biochemical components increases, in particular for lipids in the case of female clams, with no evidence of consumption of glycogen and other carbohydrates or their conversion into lipid reserves. Conditions of negative energy balance lead to a moderate degree of organic weight loss in the clams. Glycogen and other carbohydrates are rapidly consumed, falling to almost a quarter of initial values, whilst protein and lipid levels remain constant in females. Lipid values decrease slightly in males. Finally, under situations of extreme nutritive stress (when energy reserves are scarce) there is a loss of all biochemical components in a specific order of priority. Most of the glycogen and other carbohydrates are consumed initially (a decrease of 61 and 74%, respectively), followed to a lesser extent by lipids in males (40%) and then proteins (between 20 and 25%). In females, there was no lipid loss until the majority of the carbohydrates and part of the proteins had been consumed, indicating that lipids constitute the reproductive reserve par excellence in this species.202320232003info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/312686reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de A Coruñainfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3126862026-05-22T06:33:51Z
dc.title.none.fl_str_mv Energy balance, gonad development and biochemical composition in the clam Ruditapes decussatus
title Energy balance, gonad development and biochemical composition in the clam Ruditapes decussatus
spellingShingle Energy balance, gonad development and biochemical composition in the clam Ruditapes decussatus
Pérez-Camacho, Alejandro
Centro Oceanográfico de A Coruña
Acuicultura
title_short Energy balance, gonad development and biochemical composition in the clam Ruditapes decussatus
title_full Energy balance, gonad development and biochemical composition in the clam Ruditapes decussatus
title_fullStr Energy balance, gonad development and biochemical composition in the clam Ruditapes decussatus
title_full_unstemmed Energy balance, gonad development and biochemical composition in the clam Ruditapes decussatus
title_sort Energy balance, gonad development and biochemical composition in the clam Ruditapes decussatus
dc.creator.none.fl_str_mv Pérez-Camacho, Alejandro
Delgado, Marina
Fernández-Reiriz, María José
Labarta, U.
author Pérez-Camacho, Alejandro
author_facet Pérez-Camacho, Alejandro
Delgado, Marina
Fernández-Reiriz, María José
Labarta, U.
author_role author
author2 Delgado, Marina
Fernández-Reiriz, María José
Labarta, U.
author2_role author
author
author
dc.subject.none.fl_str_mv Centro Oceanográfico de A Coruña
Acuicultura
topic Centro Oceanográfico de A Coruña
Acuicultura
description This study evaluates the influence of different states of energy balance, positive and negative, on the accumulation and utilisation of energy reserves during the period of gonad development in the clam Ruditapes decussatus (L.). Our results show a clear sexual differentiation in the biochemical composition of the clams. The differences were associated with gonad development and were particularly evident in proteins and lipids. These findings imply that separation of the sexes for studying variations in the biochemical composition of sexually developed specimens is essential, and thus questions the results of previous studies in which both sexes were analysed simultaneously. Gonad development occurs under conditions of both positive and negative energy balance, and permits the development of a model of the utilisation of reserves during gonad development, which is closely linked to the clam’s energy balance. Under conditions of positive energy balance, the amount of food ingested provides sufficient energy for both metabolic consumption and the accumulation of reserves. The absolute value of all biochemical components increases, in particular for lipids in the case of female clams, with no evidence of consumption of glycogen and other carbohydrates or their conversion into lipid reserves. Conditions of negative energy balance lead to a moderate degree of organic weight loss in the clams. Glycogen and other carbohydrates are rapidly consumed, falling to almost a quarter of initial values, whilst protein and lipid levels remain constant in females. Lipid values decrease slightly in males. Finally, under situations of extreme nutritive stress (when energy reserves are scarce) there is a loss of all biochemical components in a specific order of priority. Most of the glycogen and other carbohydrates are consumed initially (a decrease of 61 and 74%, respectively), followed to a lesser extent by lipids in males (40%) and then proteins (between 20 and 25%). In females, there was no lipid loss until the majority of the carbohydrates and part of the proteins had been consumed, indicating that lipids constitute the reproductive reserve par excellence in this species.
publishDate 2003
dc.date.none.fl_str_mv 2003
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/312686
url http://hdl.handle.net/10261/312686
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de A Coruña
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869425768502657024
score 15,811543

Similar Items