Consequences of base modification in hummocks of the barnacle<i>Austromegabalanus psittacus</i>

López, Daniel; López, Boris A.; Burgos, Ignacia C.; Arriagada, Sergio E.; González, María Luisa Soriano

doi:10.1080/00288330709509916

Cited by 12 publications

(17 citation statements)

References 21 publications

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“…In balanomorph barnacles, a density-independent estimator of growth is the carino-rostral length or opercular length, corresponding to the maximum rectilinear distance between the carinal plate and the rostral plate (López et al, 2007b). Other growth estimators, such as mural plate height or basal diameter, are inadequate growth indicators, because they are modified by growth density.…”

Section: Spatial and Temporal Variability: Results In The "Giant Barnmentioning

confidence: 99%

“…Nevertheless, specimens from natural banks can reach sizes in excess of 6 cm carino-rostral length and more than 30 cm height. Shell height depends on the degree of aggregation during growth, due to the development of a modified base generated in the hummocks (López et al, 2007b).…”

Section: Spatial and Temporal Variability: Results In The "Giant Barnmentioning

confidence: 99%

“…Although they are gregarious, they do not create culture problems associated with the territorial behaviour of other species. "Giant barnacles" living in groups do not generate density-dependent effects during growth or reproduction, because of their ability to modify their base, thus limiting demand for areas of adhesion to the substrate (López et al, 2007b). c. Spat can be obtained from the wild in sufficient quantities to permit the development of commercial cultures.…”

Section: Conclusion and Projectionsmentioning

confidence: 99%

“…Data reveal interesting and varied alternatives for aquaculture diversification, based on the incorporation of mass cultures of native species. Among these, is the "giant barnacle", about which considerable knowledge has been accumulated regarding biological aspects associated with aquaculture, such as: growth (López et al, 2008a); density-dependent effects (López et al, 2007b); reproduction and life cycle (López & Toledo, 1979); effects of environmental factors, such as salinity and hypoxia (Vial et al, 1999;López et al, 2003;Simpfendörfer et al, 2005;2006); and behaviour López et al, 2008a). Furthermore, the development of production technologies for obtaining spat from the wild and for growth, have permitted culture of the "giant barnacle" on a semi-industrial scale (López, 2008;López et al, 2010).…”

Section: Effect Of Giant Barnacle Culture On Aquaculture Diversificatmentioning

confidence: 99%

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Potency of Barnacle in Aquaculture Industry

López¹,

López²,

Pham³

et al. 2012

Aquaculture

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Section: Spatial and Temporal Variability: Results In The "Giant Barnmentioning

confidence: 99%

Section: Spatial and Temporal Variability: Results In The "Giant Barnmentioning

confidence: 99%

Section: Conclusion and Projectionsmentioning

confidence: 99%

Section: Effect Of Giant Barnacle Culture On Aquaculture Diversificatmentioning

confidence: 99%

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Potency of Barnacle in Aquaculture Industry

López¹,

López²,

Pham³

et al. 2012

Aquaculture

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“…In contrast to these resources, the giant barnacle is a sessile, gregarious, omnivorous species, with high fecundity and early sexual maturity (López et al, , 2010. Its gregarious condition does not generate densitydependent effects during growth (López et al, 2007b) and it has high resistance to environmental factors (López et al, 2003;. This facilitates its culture options, its manipulation and even live transport.…”

Section: Introductionmentioning

confidence: 99%

Diversification of Chilean aquaculture: the case of the giant barnacle Austromegabalanus psittacus (Molina, 1782)

López

Arriagada

et al. 2012

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ABSTRACT.Evidence is presented supporting the technical and economic possibilities of giant barnacle Austromegabalanus psittacus (Molina, 1782) culture, one of the main alternatives for diversifying aquaculture in Chile. Spat collection from the wild varied between different sites in the north and south of the country and according to type of artificial collector. Growth also varied between sites (greater in the north), technological systems (greater in tubular systems) and depths (greater at 4 m). Average commercial size in the national market was reached over a period between 18 and 24 months. A long-line can produce between 7 to 10 gross ton during this period, therefore average annual fisheries production can be reached with only 10 to 30 longlines, in an area of 1 to 3 ha. There is demand for this resource in the external market, particularly in the Japanese market, either as product similar to "fujit subo" (Balanus rostratus), or as a new resource; the relationship between production costs and price determines that giant barnacle culture has commercial potential. Economic indicators for cultured giant barnacle were as follows: net present value (NPV): US$ 490,000; internal rate of return (IRR): 32%; discounted payback period (DPBP): 4 years. Results obtained suggest the natural bank repopulation option, and the development of mass cultures. Giant barnacle culture is based on biological characteristics that differentiate it from other crustaceans species, as well as simple and economic production technologies and favourable economic projections on external markets. Keywords: Austromegabalanus psittacus, barnacle culture, spat collection, commercial size, aquaculture diversification, Chile. Diversificación de la acuicultura chilena: el caso del cirripedio giganteAustromegabalanus psittacus (Molina, 1782) RESUMEN. Se presentan evidencias de las posibilidades técnicas y económicas del cultivo del cirripedio gigante o "picoroco", Austromegabalanus psittacus (Molina, 1782). Esta especie es una de las principales alternativas para la diversificación de la acuicultura en Chile. La captación de semilla desde el ambiente varió entre distintos sitios del norte y sur del país y según el tipo de colector artificial. El crecimiento también varió entre localidades (mayor en el norte del país), el tipo de sistema (mayor en sistemas tubulares) y profundidad (mayor a 4 m). La talla comercial promedio del mercado nacional se alcanzó entre 18 y 24 meses. Un longline puede producir entre 7 y 10 ton brutas en ese periodo, por lo que la producción promedio anual por pesquería se puede alcanzar con sólo 10 a 30 long-lines, en un área de 1 a 3 ha. Existe demanda de este recurso en el mercado externo particularmente en el mercado japonés sea como símil del "fujit subo" (Balanus rostratus) o como recurso nuevo; las relaciones de costos de producción y precios indican que tienen potencialidades en cultivos comerciales. Los indicadores económicos para el picoroco congelado proveniente de cultivo fueron los siguientes: el valor actuali...

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