Population dynamics and secondary production of Darina solenoides (Bivalvia: Mactridae) in the Río Gallegos Estuary, southern Patagonia

ABSTRACT The biology and ecology of Darina solenoides, an abundant bivalve of sandy sediments along Patagonian coasts, is poorly known. Here, we investigated the population dynamics and secondary production of this species in Río Gallegos Estuary (Southern Patagonia, Argentina, 51°35’S, 69...

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Autores principales:	Lizarralde,Zulma, Pittaluga,Susana, Albarracín,Tamara, Perroni,Mario
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2018
Materias:	Darina solenoides clam soft substrates macrobenthos somatic production key prey
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000200411
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spelling	oai:scielo:S0718-560X20180002004112018-06-13Population dynamics and secondary production of Darina solenoides (Bivalvia: Mactridae) in the Río Gallegos Estuary, southern PatagoniaLizarralde,ZulmaPittaluga,SusanaAlbarracín,TamaraPerroni,Mario Darina solenoides clam soft substrates macrobenthos somatic production key prey ABSTRACT The biology and ecology of Darina solenoides, an abundant bivalve of sandy sediments along Patagonian coasts, is poorly known. Here, we investigated the population dynamics and secondary production of this species in Río Gallegos Estuary (Southern Patagonia, Argentina, 51°35’S, 69°01’W). Sampling was conducted monthly, from April 2014 to June 2015, by collecting 10 samples from the intertidal fringe using a core of 10 cm inner diameter. The sediment was mainly composed of fine and very fine (77.5%) sand; total organic matter content was 1.8%. The average population density was 779.4 ± 56.4 ind m-2 the population was composed of four modal groups. The settlement of a new cohort occurred in April-May each year. The von Bertalanffy growth function was L∞ = 49.4 mm; K = 0.5; the calculated lifespan was 4.2 years. Population somatic production was 80.6 g dry mass m-2 yr−1 and the production-to-biomass (P/B) ratio was 0.96. The observed high production supports the hypothesis that D. solenoides is an important resource for many marine species.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.46 n.2 20182018-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000200411en10.3856/vol46-issue2-fulltext-16
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Darina solenoides clam soft substrates macrobenthos somatic production key prey
spellingShingle	Darina solenoides clam soft substrates macrobenthos somatic production key prey Lizarralde,Zulma Pittaluga,Susana Albarracín,Tamara Perroni,Mario Population dynamics and secondary production of Darina solenoides (Bivalvia: Mactridae) in the Río Gallegos Estuary, southern Patagonia
description	ABSTRACT The biology and ecology of Darina solenoides, an abundant bivalve of sandy sediments along Patagonian coasts, is poorly known. Here, we investigated the population dynamics and secondary production of this species in Río Gallegos Estuary (Southern Patagonia, Argentina, 51°35’S, 69°01’W). Sampling was conducted monthly, from April 2014 to June 2015, by collecting 10 samples from the intertidal fringe using a core of 10 cm inner diameter. The sediment was mainly composed of fine and very fine (77.5%) sand; total organic matter content was 1.8%. The average population density was 779.4 ± 56.4 ind m-2 the population was composed of four modal groups. The settlement of a new cohort occurred in April-May each year. The von Bertalanffy growth function was L∞ = 49.4 mm; K = 0.5; the calculated lifespan was 4.2 years. Population somatic production was 80.6 g dry mass m-2 yr−1 and the production-to-biomass (P/B) ratio was 0.96. The observed high production supports the hypothesis that D. solenoides is an important resource for many marine species.
author	Lizarralde,Zulma Pittaluga,Susana Albarracín,Tamara Perroni,Mario
author_facet	Lizarralde,Zulma Pittaluga,Susana Albarracín,Tamara Perroni,Mario
author_sort	Lizarralde,Zulma
title	Population dynamics and secondary production of Darina solenoides (Bivalvia: Mactridae) in the Río Gallegos Estuary, southern Patagonia
title_short	Population dynamics and secondary production of Darina solenoides (Bivalvia: Mactridae) in the Río Gallegos Estuary, southern Patagonia
title_full	Population dynamics and secondary production of Darina solenoides (Bivalvia: Mactridae) in the Río Gallegos Estuary, southern Patagonia
title_fullStr	Population dynamics and secondary production of Darina solenoides (Bivalvia: Mactridae) in the Río Gallegos Estuary, southern Patagonia
title_full_unstemmed	Population dynamics and secondary production of Darina solenoides (Bivalvia: Mactridae) in the Río Gallegos Estuary, southern Patagonia
title_sort	population dynamics and secondary production of darina solenoides (bivalvia: mactridae) in the río gallegos estuary, southern patagonia
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000200411
work_keys_str_mv	AT lizarraldezulma populationdynamicsandsecondaryproductionofdarinasolenoidesbivalviamactridaeintheriogallegosestuarysouthernpatagonia AT pittalugasusana populationdynamicsandsecondaryproductionofdarinasolenoidesbivalviamactridaeintheriogallegosestuarysouthernpatagonia AT albarracintamara populationdynamicsandsecondaryproductionofdarinasolenoidesbivalviamactridaeintheriogallegosestuarysouthernpatagonia AT perronimario populationdynamicsandsecondaryproductionofdarinasolenoidesbivalviamactridaeintheriogallegosestuarysouthernpatagonia
_version_	1714205199872032768

Population dynamics and secondary production of Darina solenoides (Bivalvia: Mactridae) in the Río Gallegos Estuary, southern Patagonia

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