Document Detail

Changes in tissue biochemical composition and energy reserves associated with sexual maturation in the ommastrephid squids Illex coindetii and Todaropsis eblanae.
MedLine Citation:
PMID:  15837959     Owner:  NLM     Status:  MEDLINE    
The aim of this study was to investigate the biochemical changes that occur during sexual maturation of the squids Illex coindetii and Todaropsis eblanae. In both species, amino acids and protein content increased in the gonad throughout maturation, but the allocation of these nitrogen compounds from the digestive gland and muscle was not evident. A significant (P < 0.05) increase in the content of lipids and fatty acids was observed in the gonad and digestive gland. It seems that both species take energy for egg production directly from food, rather than from stored products. Analyses for cholesterol revealed a significant (P < 0.05) increase in the gonad, and the lipid content differences between species are potentially related to different feeding ecologies. The glycogen reserves in the gonad increased significantly (P < 0.05), suggesting that glycogen has an important role in the maturation process. It was evident that sexual maturation had a significant effect upon the gonad energy content, but because the energy variation in the digestive gland and muscle was nonsignificant (P > 0.05), there was no evidence that storage reserves are transferred from tissue to tissue.
R Rosa; P R Costa; N Bandarra; M L Nunes
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Biological bulletin     Volume:  208     ISSN:  0006-3185     ISO Abbreviation:  Biol. Bull.     Publication Date:  2005 Apr 
Date Detail:
Created Date:  2005-04-19     Completed Date:  2005-06-07     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  2984727R     Medline TA:  Biol Bull     Country:  United States    
Other Details:
Languages:  eng     Pagination:  100-13     Citation Subset:  IM    
Departamento de Inovação Tecnológica e Valorização dos Produtos da Pesca, IPIMAR, Avenida de Brasília, 1449-006 Lisboa, Portugal.
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MeSH Terms
Amino Acids / metabolism
Analysis of Variance
Atlantic Ocean
Cholesterol / metabolism
Chromatography, Gas
Chromatography, Ion Exchange
Decapodiformes / metabolism*,  physiology
Digestive System / metabolism*
Fatty Acids / metabolism
Glycogen / metabolism
Gonads / metabolism*
Lipid Metabolism
Muscles / metabolism*
Proteins / metabolism
Sexual Maturation / physiology*
Species Specificity
Reg. No./Substance:
0/Amino Acids; 0/Fatty Acids; 0/Proteins; 57-88-5/Cholesterol; 9005-79-2/Glycogen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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