Spawning and larval husbandry of flounder (Paralichthys woolmani) and Pacific yellowtail (Seriola mazatlana), new candidate species for aquaculture

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Abstract

This paper describes the spawning and larval rearing of a new species of flounder (Paralichthys woolmani) and Pacific yellowtail (Seriola mazatlana) for aquaculture in Ecuador. Experimental production of these species has been conducted for the first time from eggs in captivity. Broodstock flounder were conditioned to spawn through temperature manipulation. Pacific yellowtail spawned under natural environmental conditions. Production of flounder fingerlings has been steady but survival rates remain low (3-8%). Survivals ranging from 0-70% were achieved throughout larval rearing of Seriola, however, high mortalities caused by diseases, cannibalism and weaning onto artificial diets during and after metamorphosis reduced the average survival rates through the juvenile stage to less than 1%. Epizootics of epitheliocystis and Vibrio alginolyticus have repeatedly occurred during the early developmental stages and remain the bottleneck to sustainable mass production of S. mazatlana and P. woolmani fingerlings.

Original languageEnglish (US)
Pages (from-to)307-318
Number of pages12
JournalAquaculture
Volume155
Issue number1-4
DOIs
StatePublished - Sep 20 1997

Fingerprint

Seriola
Paralichthys
flounder
aquaculture
spawning
fingerlings
new species
rearing
survival rate
fish roe
Vibrio alginolyticus
breeding stock
artificial diet
weaning
cannibalism
captivity
artificial diets
Ecuador
metamorphosis
developmental stage

Keywords

  • Aquaculture
  • Flounder
  • Larval rearing
  • Spawning
  • Yellowtail

ASJC Scopus subject areas

  • Aquatic Science

Cite this

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title = "Spawning and larval husbandry of flounder (Paralichthys woolmani) and Pacific yellowtail (Seriola mazatlana), new candidate species for aquaculture",
abstract = "This paper describes the spawning and larval rearing of a new species of flounder (Paralichthys woolmani) and Pacific yellowtail (Seriola mazatlana) for aquaculture in Ecuador. Experimental production of these species has been conducted for the first time from eggs in captivity. Broodstock flounder were conditioned to spawn through temperature manipulation. Pacific yellowtail spawned under natural environmental conditions. Production of flounder fingerlings has been steady but survival rates remain low (3-8{\%}). Survivals ranging from 0-70{\%} were achieved throughout larval rearing of Seriola, however, high mortalities caused by diseases, cannibalism and weaning onto artificial diets during and after metamorphosis reduced the average survival rates through the juvenile stage to less than 1{\%}. Epizootics of epitheliocystis and Vibrio alginolyticus have repeatedly occurred during the early developmental stages and remain the bottleneck to sustainable mass production of S. mazatlana and P. woolmani fingerlings.",
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N2 - This paper describes the spawning and larval rearing of a new species of flounder (Paralichthys woolmani) and Pacific yellowtail (Seriola mazatlana) for aquaculture in Ecuador. Experimental production of these species has been conducted for the first time from eggs in captivity. Broodstock flounder were conditioned to spawn through temperature manipulation. Pacific yellowtail spawned under natural environmental conditions. Production of flounder fingerlings has been steady but survival rates remain low (3-8%). Survivals ranging from 0-70% were achieved throughout larval rearing of Seriola, however, high mortalities caused by diseases, cannibalism and weaning onto artificial diets during and after metamorphosis reduced the average survival rates through the juvenile stage to less than 1%. Epizootics of epitheliocystis and Vibrio alginolyticus have repeatedly occurred during the early developmental stages and remain the bottleneck to sustainable mass production of S. mazatlana and P. woolmani fingerlings.

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