Optimization of settlement of larval Argopecten purpuratus using natural diatom biofilms

Ruben Avendaño-Herrera, Carlos Riquelmes, Fernando Silva, Miguel Avendañod, Rute Irgang

Resultado de la investigación: Article

16 Citas (Scopus)

Resumen

Larval settlement is a critical stage in the artificial production of Argopecten purpuratus. The study investigated the feasibility of improving post-larval settlement of this species using a substrate (cultch) that was pre-treated with a biofilm of native diatoms. Four species of diatoms were isolated from the surface of collectors that had high numbers of juvenile scallops (spat). These four species were able to attach themselves and grow on a polystyrene substrate. Scallop post-larval settlement was evaluated experimentally in two ways: (1) laboratory experiments in 10-L buckets: and (2) under natural condition by in situ experiments at the Marine Reserve "La Rinconada" (Antofagasta, Chile). Effects of biofilm treatments were examined using collectors that were coated with diatoms and collectors handled using normal culture methods (new netlon held in filtered seawater that did not have a biofilm). Results of the laboratory experiments showed a higher percentage of A. purpuratus post-larval settlement on collectors coated with Fragiliaropsis pseudonana compared with control collectors (P > 0.05). Results comparing biofilms of the diatoms F. pseudonana and Navicula veneta showed higher settlement on collectors pretreated with N. veneta (1,156± 172 spat per collector-1). Statistical analysis showed that the addition of diatom biofilms enhanced spatfall and always produced larger settlement compared with untreated collectors. These results indicate that addition of cultured diatom biofilms improves scallop larval settlement.

Idioma originalEnglish
Páginas (desde-hasta)393-399
Número de páginas7
PublicaciónJournal of Shellfish Research
Volumen22
N.º2
EstadoPublished - sep 2003

Huella dactilar

Argopecten purpuratus
Bacillariophyceae
larval settlement
collectors
biofilm
diatom
scallops
spit
substrate
marine park
Navicula
buckets
polystyrenes
statistical analysis
seawater
Chile

ASJC Scopus subject areas

  • Aquatic Science

Citar esto

Avendaño-Herrera, Ruben ; Riquelmes, Carlos ; Silva, Fernando ; Avendañod, Miguel ; Irgang, Rute. / Optimization of settlement of larval Argopecten purpuratus using natural diatom biofilms. En: Journal of Shellfish Research. 2003 ; Vol. 22, N.º 2. pp. 393-399.
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Avendaño-Herrera, R, Riquelmes, C, Silva, F, Avendañod, M & Irgang, R 2003, 'Optimization of settlement of larval Argopecten purpuratus using natural diatom biofilms', Journal of Shellfish Research, vol. 22, n.º 2, pp. 393-399.

Optimization of settlement of larval Argopecten purpuratus using natural diatom biofilms. / Avendaño-Herrera, Ruben; Riquelmes, Carlos; Silva, Fernando; Avendañod, Miguel; Irgang, Rute.

En: Journal of Shellfish Research, Vol. 22, N.º 2, 09.2003, p. 393-399.

Resultado de la investigación: Article

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T1 - Optimization of settlement of larval Argopecten purpuratus using natural diatom biofilms

AU - Avendaño-Herrera, Ruben

AU - Riquelmes, Carlos

AU - Silva, Fernando

AU - Avendañod, Miguel

AU - Irgang, Rute

PY - 2003/9

Y1 - 2003/9

N2 - Larval settlement is a critical stage in the artificial production of Argopecten purpuratus. The study investigated the feasibility of improving post-larval settlement of this species using a substrate (cultch) that was pre-treated with a biofilm of native diatoms. Four species of diatoms were isolated from the surface of collectors that had high numbers of juvenile scallops (spat). These four species were able to attach themselves and grow on a polystyrene substrate. Scallop post-larval settlement was evaluated experimentally in two ways: (1) laboratory experiments in 10-L buckets: and (2) under natural condition by in situ experiments at the Marine Reserve "La Rinconada" (Antofagasta, Chile). Effects of biofilm treatments were examined using collectors that were coated with diatoms and collectors handled using normal culture methods (new netlon held in filtered seawater that did not have a biofilm). Results of the laboratory experiments showed a higher percentage of A. purpuratus post-larval settlement on collectors coated with Fragiliaropsis pseudonana compared with control collectors (P > 0.05). Results comparing biofilms of the diatoms F. pseudonana and Navicula veneta showed higher settlement on collectors pretreated with N. veneta (1,156± 172 spat per collector-1). Statistical analysis showed that the addition of diatom biofilms enhanced spatfall and always produced larger settlement compared with untreated collectors. These results indicate that addition of cultured diatom biofilms improves scallop larval settlement.

AB - Larval settlement is a critical stage in the artificial production of Argopecten purpuratus. The study investigated the feasibility of improving post-larval settlement of this species using a substrate (cultch) that was pre-treated with a biofilm of native diatoms. Four species of diatoms were isolated from the surface of collectors that had high numbers of juvenile scallops (spat). These four species were able to attach themselves and grow on a polystyrene substrate. Scallop post-larval settlement was evaluated experimentally in two ways: (1) laboratory experiments in 10-L buckets: and (2) under natural condition by in situ experiments at the Marine Reserve "La Rinconada" (Antofagasta, Chile). Effects of biofilm treatments were examined using collectors that were coated with diatoms and collectors handled using normal culture methods (new netlon held in filtered seawater that did not have a biofilm). Results of the laboratory experiments showed a higher percentage of A. purpuratus post-larval settlement on collectors coated with Fragiliaropsis pseudonana compared with control collectors (P > 0.05). Results comparing biofilms of the diatoms F. pseudonana and Navicula veneta showed higher settlement on collectors pretreated with N. veneta (1,156± 172 spat per collector-1). Statistical analysis showed that the addition of diatom biofilms enhanced spatfall and always produced larger settlement compared with untreated collectors. These results indicate that addition of cultured diatom biofilms improves scallop larval settlement.

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