Relationship between energy allocation and gametogenesis in Aulacomya atra (Bivalvia: Mytilidae) in a sub-Antarctic environment

Gametogenesis and temporal variation in energy allocation to different organs were analyzed in Aulacomya atra from the Beagle Channel (Tierra del Fuego, Argentina). Our results show that A. atra presents an extended spawning period from late winter to spring when the lowest value of mantle-gonad ind...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Pérez,Analía F, Boy,Claudia C, Curelovich,Jessica, Pérez-Barros,Patricia, Calcagno,Javier A
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2013
Materias:	Energetics calorimetry reproduction bivalve Beagle Channel Aulacomya atra
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572013000300005
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0718-19572013000300005
record_format	dspace
spelling	oai:scielo:S0718-195720130003000052014-04-08Relationship between energy allocation and gametogenesis in Aulacomya atra (Bivalvia: Mytilidae) in a sub-Antarctic environmentPérez,Analía FBoy,Claudia CCurelovich,JessicaPérez-Barros,PatriciaCalcagno,Javier A Energetics calorimetry reproduction bivalve Beagle Channel Aulacomya atra Gametogenesis and temporal variation in energy allocation to different organs were analyzed in Aulacomya atra from the Beagle Channel (Tierra del Fuego, Argentina). Our results show that A. atra presents an extended spawning period from late winter to spring when the lowest value of mantle-gonad index (MGI) and maximum number of spawned individuals were observed. The MGI in mature males increased as the energy density of the mantle-gonad (ED MG) decreased, indicating an increase in mass of lower energy values. In contrast, the MGI in mature females increased as ED MG increased, indicating an increase in mass of higher energy values. Consequently, males and females reached a similar energy content of the mantle-gonad (EC MG) by means of different strategies: males have gonads of larger size but with lower energy by unit of mass than females. Besides, we observed a decrease in the digestive gland index (DGI) in concordance with an increase in the MGI of mature individuals, and a trend towards the depletion of ED and EC in the digestive gland during gonadal maturation. Our results evidence the role of the digestive gland as an energy reservoir and a different energy allocation strategy between sexes during gonadal maturation.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.48 n.3 20132013-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572013000300005en10.4067/S0718-19572013000300005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Energetics calorimetry reproduction bivalve Beagle Channel Aulacomya atra
spellingShingle	Energetics calorimetry reproduction bivalve Beagle Channel Aulacomya atra Pérez,Analía F Boy,Claudia C Curelovich,Jessica Pérez-Barros,Patricia Calcagno,Javier A Relationship between energy allocation and gametogenesis in Aulacomya atra (Bivalvia: Mytilidae) in a sub-Antarctic environment
description	Gametogenesis and temporal variation in energy allocation to different organs were analyzed in Aulacomya atra from the Beagle Channel (Tierra del Fuego, Argentina). Our results show that A. atra presents an extended spawning period from late winter to spring when the lowest value of mantle-gonad index (MGI) and maximum number of spawned individuals were observed. The MGI in mature males increased as the energy density of the mantle-gonad (ED MG) decreased, indicating an increase in mass of lower energy values. In contrast, the MGI in mature females increased as ED MG increased, indicating an increase in mass of higher energy values. Consequently, males and females reached a similar energy content of the mantle-gonad (EC MG) by means of different strategies: males have gonads of larger size but with lower energy by unit of mass than females. Besides, we observed a decrease in the digestive gland index (DGI) in concordance with an increase in the MGI of mature individuals, and a trend towards the depletion of ED and EC in the digestive gland during gonadal maturation. Our results evidence the role of the digestive gland as an energy reservoir and a different energy allocation strategy between sexes during gonadal maturation.
author	Pérez,Analía F Boy,Claudia C Curelovich,Jessica Pérez-Barros,Patricia Calcagno,Javier A
author_facet	Pérez,Analía F Boy,Claudia C Curelovich,Jessica Pérez-Barros,Patricia Calcagno,Javier A
author_sort	Pérez,Analía F
title	Relationship between energy allocation and gametogenesis in Aulacomya atra (Bivalvia: Mytilidae) in a sub-Antarctic environment
title_short	Relationship between energy allocation and gametogenesis in Aulacomya atra (Bivalvia: Mytilidae) in a sub-Antarctic environment
title_full	Relationship between energy allocation and gametogenesis in Aulacomya atra (Bivalvia: Mytilidae) in a sub-Antarctic environment
title_fullStr	Relationship between energy allocation and gametogenesis in Aulacomya atra (Bivalvia: Mytilidae) in a sub-Antarctic environment
title_full_unstemmed	Relationship between energy allocation and gametogenesis in Aulacomya atra (Bivalvia: Mytilidae) in a sub-Antarctic environment
title_sort	relationship between energy allocation and gametogenesis in aulacomya atra (bivalvia: mytilidae) in a sub-antarctic environment
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572013000300005
work_keys_str_mv	AT perezanaliaf relationshipbetweenenergyallocationandgametogenesisinaulacomyaatrabivalviamytilidaeinasubantarcticenvironment AT boyclaudiac relationshipbetweenenergyallocationandgametogenesisinaulacomyaatrabivalviamytilidaeinasubantarcticenvironment AT curelovichjessica relationshipbetweenenergyallocationandgametogenesisinaulacomyaatrabivalviamytilidaeinasubantarcticenvironment AT perezbarrospatricia relationshipbetweenenergyallocationandgametogenesisinaulacomyaatrabivalviamytilidaeinasubantarcticenvironment AT calcagnojaviera relationshipbetweenenergyallocationandgametogenesisinaulacomyaatrabivalviamytilidaeinasubantarcticenvironment
_version_	1714202331229192192

Relationship between energy allocation and gametogenesis in Aulacomya atra (Bivalvia: Mytilidae) in a sub-Antarctic environment

Ejemplares similares