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Title: Effect of sex ratio on growth and survival in Octopus vulgaris (Cuvier, 1797) reared in floating cages
Authors: Estefanell, J.
Socorro Cruz, Juan Antonio
Guirao Guijarro, Rafael
Fernandez-Palacios, H. 
Izquierdo, Marisol 
Roo, Javier 
UNESCO Clasification: 251092 Acuicultura marina
Keywords: Pulpo
Issue Date: 2010
Abstract: Octopus vulgaris is a potential candidate to diversify European aquaculture for its rapid growth and high market prices (Vaz Pires et al. 2004). One factor affecting industrial development of octopus culture is sexual maturation under rearing conditions. Octopus females can lose up to 30-60% of their initial body weight during egg-laying (Iglesias et al., 2000) and die after the paralarvae hatch (Guerra,1992), while a correlation between males death and spermatic sac depletion has being recently reported by Estefanell et al. (2010b). The present experiment discusses the effect of three different sex ratios on growth, sexual maturation and survival in O. Vulgaris. Conclusions: Discarded bogue from fish farms could be used as alternative diet for the final stage of O. vulgaris ongrowing ; Male segregation would maximize biomass increment ; Under the conditions described, sex ratios close to 1:1 produced higher biomass increment than 4:1
DOI: 10.13140/2.1.3784.4489
Source: Aquaculture Europe 2010, Porto, Portugal, october 5-8
Rights: by-nc-nd
Appears in Collections:Póster de congreso
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