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Crecimiento de Mytella guyanensis (Bivalvia: Mytilidae) en balsas flotantes

Authors: Arroyo Mora, Daisy; Marín Alpízar, Berny;

Crecimiento de Mytella guyanensis (Bivalvia: Mytilidae) en balsas flotantes

Abstract

Se estudió el crecimiento del mitilido Mytella guyanensis en una estructura flotante en Isla de Chira, Golfo de Nicoya, Costa Rica.Se recolectó semilla natural con colectores que fueron colocados en la estructura suspendida por un lapso total de tres meses. De cada colector se obtuvo un total de tres kilogramos de semilla (2025 juveniles por colector) con un tamaño y peso promedios de 19.4 mm y 0.79 g. Esta semilla fue sembrada en cuerdas de engorda a una densidad inicial de un kilogramo por metro lineal por un periodo tolal de nueve meses, al fin de los cuales alcazaron 44.4 mm (D.E. 3.43) Y 8.5 g (D.E. 1.98). EI crecimiento mensual observado fue de 5.77 mm y 0.57 g, con un incremento importante durante los prirneros seis meses.

Growth of the mytilid species Mytella guyanensis was studied on a floating raft in Chira Island, inner Gulf of Nicoya, Costa Rica. Natural seed collection was done with 1.5 m long spat collectors suspended from a wooden raft. The collectors produced a total of 3 kg of seed each (2025 seeds per collector) after three months, reaching a mean size of 19.4 mm and 0,79 g per seed. Seed mussels were retubed and resuspended for nine more months and reached a marketable size of 44.4 mm (S.D. 3.43) and 8.5 g (S.D. 1.98). Mean growth rates were 5.7 mm and 0.57 g per month, with a meat yield of 32.7%. for the fifth month. As in other mollusks, growth rate was higher during the first six culture months.

UCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigación en Ciencias del Mar y Limnología (CIMAR)

Instituto Costarricense de Pesca y Acuicultura/[]/INCOPESCA/Costa Rica

Universidad de Costa Rica/[808-94-256]/UCR/Costa Rica

Country
Costa Rica
Related Organizations
Keywords

Raft system, 593.4 Bivalvia (Bivalvos), growth, Mytella, Culture, Mejillón, Mussels, Growth, raft system, Crecimiento, Cultivo, culture

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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