Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/128856
Title: Optimising abalone settlement and metamorphosis: a red macroalgae candidate as an alternative to existing algal substrates
Authors: Courtois De Viscose,Gercende 
Marrero Sánchez, Nuria
Viera Toledo,Maria Del Pino 
Afonso López, Juan Manuel 
UNESCO Clasification: 241707 Algología (ficología)
Keywords: Abalone
Algal Cues
Best Practices
Cca
Haliotis Tuberculata Sp, et al
Issue Date: 2024
Journal: New Zealand Journal of Marine and Freshwater Research 
Abstract: Settlement induction potential of two red algae, Sahlingia subintegra and Rhodosorus marinus, and one green macroalgae, Ulvella leptochaete was examined to identify potential alternative algal species to improve reliability and reproducibility of Haliotis tuberculata sp. settlement. CCA was used as a positive control. Settlement rates, post-larval survival and growth of Haliotis tuberculata sp. were evaluated for different algal species tested. Results showed that Sahlingia subintegra induced significantly higher settlement rates (58.17 ± 12.71%) compared to CCA, Ulvella leptochaete and Rhodosorus marinus. In all treatments, post-larvae were weekly fed a mix of diatoms (Amphora sp., and Navicula incerta). At four weeks post settlement, post-larval survival rates were significantly higher on CCA and Sahlingia subintegra substrates compared to the other two algal species tested. However, at four and five weeks post settlement there were no significant differences in post-larval shell length and growth rates between CCA and Sahlingia subintegra substrates. These findings suggest that Sahlingia subintegra could be a promising alternative red macroalgae providing settlement cue for abalone hatchery stages, particularly for Haliotis tuberculata sp. and could contribute to improve abalone breeding techniques through the selection of alternative settlement substrates that could be easily managed in abalone farms environments.
URI: http://hdl.handle.net/10553/128856
ISSN: 0028-8330
DOI: 10.1080/00288330.2023.2297910
Source: New Zealand Journal of Marine and Freshwater Research[ISSN 0028-8330], (Enero 2024)
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