Morfometría del tubo digestivo y alimentación del pepino de mar Athyonidium chilensis (Semper, 1868) (Echinodermata: Holothuroidea)

J. Francisco Ruiz, Christian M. Ibáñez, Cristian W. Cáceres

Resultado de la investigación: Article

8 Citas (Scopus)

Resumen

Holothurians are characterized for being deposit-feeders and can remove important amounts of biomass of organic matter of the marine bottom in zones where they are abundant. In Chile, Athyondium chilensis is the species of greater body size within its class and poorly studied in spite of its commercial importance. Thirty samples of A. chilensis were obtained from Caleta Chome (36°40′S, 73°10′ W) Chile, to make morphometric measures of their intestine and to analyze their relation with the body size and intestinal content. The diet was quantified by gravimetric method and frequency of occurrence, as also its relative abundance of four categories was quantified: microalgae, macroalgae, invertebrates and detritus, which were correlated with the body size of cucumbers. Thirty six prey items were identified mainly macroalgae and invertebrates. The relationships between the morphometric measures of the individuals and their intestine were positive as also these in relation to the weight of intestinal content. The relative abundance of macroalgae showed a negative tendency in relation to the size of sea cucumbers. The invertebrates, microalgae and the detritus showed a positive increase in relation to the body size of A. chilensis. This sea cucumber would be a key-species in the structure of sediments in intertidal and subtidal environments in the Chilean coast, with special emphasis to the places where they are very abundant.

Idioma originalSpanish
Páginas (desde-hasta)269-274
Número de páginas6
PublicaciónRevista de Biologia Marina y Oceanografia
Volumen42
N.º3
EstadoPublished - dic 2007

Huella dactilar

Holothuroidea
morphometry
Echinodermata
body size
digestive system
macroalgae
invertebrate
invertebrates
microalgae
detritus
Chile
relative abundance
intestines
subtidal environment
deposit feeder
intertidal environment
cucumbers
organic matter
diet
coasts

ASJC Scopus subject areas

  • Aquatic Science
  • Oceanography

Citar esto

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abstract = "Holothurians are characterized for being deposit-feeders and can remove important amounts of biomass of organic matter of the marine bottom in zones where they are abundant. In Chile, Athyondium chilensis is the species of greater body size within its class and poorly studied in spite of its commercial importance. Thirty samples of A. chilensis were obtained from Caleta Chome (36°40′S, 73°10′ W) Chile, to make morphometric measures of their intestine and to analyze their relation with the body size and intestinal content. The diet was quantified by gravimetric method and frequency of occurrence, as also its relative abundance of four categories was quantified: microalgae, macroalgae, invertebrates and detritus, which were correlated with the body size of cucumbers. Thirty six prey items were identified mainly macroalgae and invertebrates. The relationships between the morphometric measures of the individuals and their intestine were positive as also these in relation to the weight of intestinal content. The relative abundance of macroalgae showed a negative tendency in relation to the size of sea cucumbers. The invertebrates, microalgae and the detritus showed a positive increase in relation to the body size of A. chilensis. This sea cucumber would be a key-species in the structure of sediments in intertidal and subtidal environments in the Chilean coast, with special emphasis to the places where they are very abundant.",
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AU - Cáceres, Cristian W.

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AB - Holothurians are characterized for being deposit-feeders and can remove important amounts of biomass of organic matter of the marine bottom in zones where they are abundant. In Chile, Athyondium chilensis is the species of greater body size within its class and poorly studied in spite of its commercial importance. Thirty samples of A. chilensis were obtained from Caleta Chome (36°40′S, 73°10′ W) Chile, to make morphometric measures of their intestine and to analyze their relation with the body size and intestinal content. The diet was quantified by gravimetric method and frequency of occurrence, as also its relative abundance of four categories was quantified: microalgae, macroalgae, invertebrates and detritus, which were correlated with the body size of cucumbers. Thirty six prey items were identified mainly macroalgae and invertebrates. The relationships between the morphometric measures of the individuals and their intestine were positive as also these in relation to the weight of intestinal content. The relative abundance of macroalgae showed a negative tendency in relation to the size of sea cucumbers. The invertebrates, microalgae and the detritus showed a positive increase in relation to the body size of A. chilensis. This sea cucumber would be a key-species in the structure of sediments in intertidal and subtidal environments in the Chilean coast, with special emphasis to the places where they are very abundant.

KW - Body size

KW - Deposit-feeding

KW - Holothurians

KW - Intestine size

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