Effects of Prey Size, Microalgal Density, and Light Intensity on Survival of Pacific Red Snapper Larvae

Author:

Amador‐Marrero Ulises1,Cota‐Taylor Roberto1,Contreras‐Olguín Mauricio1,Flores‐Montijo Laura1,Martínez‐Díaz Sergio1,Cavallin Fernando2,García Gerardo2,Rodriguez Montes de Oca Gustavo3,Román‐Reyes José Cristobal3,Dumas Silvie1ORCID

Affiliation:

1. Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Comisión de Operación y Fomento de Actividades Académicas, Unidad Piloto de Maricultivos Avenida Instituto Politécnico Nacional s/n Colonia Playa del Palo de Santa‐Rita La Paz Baja California Sur 23096 Mexico

2. Earth Ocean Farms, Álvaro Obregón 720, Local 8 Colonia El Esterito La Paz Baja California Sur 23020 Mexico

3. Laboratorio de Reproducción y Cultivo de Peces, Facultad de Ciencias Marinas Universidad Autónoma de Sinaloa, Paseo Claussen s/n Colonia Los Pinos Mazatlán Sinaloa 82000 Mexico

Abstract

AbstractDevelopment of Pacific Red Snapper Lutjanus peru culture has been impeded by low survival in larval culture. We studied the effects of different culture conditions on larval survival in four experiments that examined (1) different‐size prey at first feeding (nauplii of the copepods Parvocalanus crassirostris and Pseudodiaptomus euryhalinus; rotifers Proales similis; and a mix of these three prey types); (2) microalgal density (3 × 105 and 1 × 106 cells/mL); (3) the presence of adult copepods P. crassirostris in larval culture tanks compared to daily nauplius addition (Adult and Nauplius treatments); and (4) light intensity (50, 200, 500, and 1,000 lx). In experiment 1, a strong preference was observed for copepod P. crassirostris nauplii compared to other prey types. Survival at 15 d posthatch (DPH) was significantly higher in the P. crassirostris treatment (mean ± SD = 19.5 ± 10.2%) and the Mixed diet treatment (33.4 ± 9.4%). However, strange behavior of larvae was observed, followed by drastic mortality (at 15–18 DPH) when microalgal addition to larval tanks ceased. This behavior and mortality had not been observed in experiment 2 at any of the microalgal densities supplied until 20 DPH. In experiment 3, survival was evaluated at 2, 5, 7, and 9 DPH and dropped to 50% (5 DPH) in both treatments. At 9 DPH, survival was 14.8 ± 9.5% for the Adult treatment and 3.4 ± 0.9% for the Nauplius treatment. In experiment 4, a significant difference was observed for survival at 9 DPH; survival at 1,000 lx (26.5 ± 18.4%) was significantly higher than survival at 200 lx (4.9 ± 5%) and 50 lx (0.6 ± 0.6%) but was not different from survival at 500 lx (6.6 ± 3.1%). In conclusion, P. crassirostris nauplii are an adequate prey for first feeding of Pacific Red Snapper. Therefore, to improve larval survival, P. crassirostris adults should be added to the larval culture tanks. Moreover, microalgae should be present during all larval rearing, and a light intensity of 1,000 lx should be used.

Funder

Instituto Politécnico Nacional

Consejo Nacional de Ciencia y Tecnología

Publisher

Wiley

Subject

Aquatic Science

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3