The effects of live prey and greenwater on the early larval rearing of orchid dottyback Pseudochromis fridmani

Chen, Jun Yu; Zeng, Chaoshu

doi:10.1016/j.aquaculture.2021.737008

Cited by 12 publications

(10 citation statements)

References 77 publications

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“…Copepods are a proven live feed for newly hatched fish larvae, especially for some larvae of coral reef fish with small mouth gapes [ 9 , 37 , 64 , 65 , 66 ]. They can enhance the survival and growth rate of fish larvae and reduce the incidence of deformities.…”

Section: Discussionmentioning

confidence: 99%

Iron Fertilization Can Enhance the Mass Production of Copepod, Pseudodiaptomus annandalei, for Fish Aquaculture

Hong

Kuo

Tew

2023

Life

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Copepods are proven nutritious food sources for the mariculture/larviculture industry, however, unreliable methods for mass production of copepods are a major bottleneck. In this study, we modified a previously reported inorganic fertilization method (N: 700 μg L−1 and P: 100 μg L−1) by the addition of iron (Fe: 10 μg L−1, using FeSO4·7H2O) (+Fe treatment) and compared its suitability for copepod culture (Pseudodiaptomus annandalei) to the original method (control). The experiment was conducted outdoors in 1000 L tanks for 15 days. The addition of iron prolonged the growth phase of the phytoplankton and resulted in the production of significantly more small phytoplankton (0.45–20 μm, average 2.01 ± 0.52 vs. 9.03 ± 4.17 µg L−1 in control and +Fe, respectively) and adult copepods (control: 195 ± 35, +Fe: 431 ± 109 ind L−1), whereas copepodid-stage was similar between treatments (control: 511 ± 107 vs. +Fe: 502 ± 68 ind L−1). Although adding iron increased the cost of production by 23% compared to the control, the estimated net profit was 97% greater. We concluded that inorganic fertilization, with the addition of iron (Fe: 10 μg L−1), could be an effective method for the mass production of copepods for larviculture.

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Section: Discussionmentioning

confidence: 99%

Iron Fertilization Can Enhance the Mass Production of Copepod, Pseudodiaptomus annandalei, for Fish Aquaculture

Hong

Kuo

Tew

2023

Life

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“…At the beginning of experiment 1 (1 dph) and after all larvae had died in the C treatment (i.e., end of experiment 1), 5–10 larvae were sampled from each tank, anesthetized with MS‐222 (20 mg/L; Sigma‐Aldrich), and photographed to measure notochord length (NL), body depth (BD), and eye diameter (ED) for the assessment of growth performance (Thépot et al. 2016; Chen and Zeng 2021).…”

Section: Methodsmentioning

confidence: 99%

“…Inappropriate prey densities have been found to exert a significant effect on larval survival, as noted by Shaw et al (2006). For some marine ornamental fish larvae, increasing prey density improved the feeding proportion, feeding intensity, and growth performance (Chen and Zeng 2021;Groover et al 2021). However, there were…”

Section: Introductionmentioning

confidence: 97%

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First feeding of a marine ornamental fish, the White‐barred Goby Amblygobius phalaena: Investigating the optimal initial live feed organisms and optimal feeding density

Chiu,

Ho,

Hsu

et al. 2024

N American J Aquac

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The white‐barred goby, Amblygobius phalaena, is a popular ornamental fish in the marine aquarium market. To achieve successful commercial production, efficient larval rearing techniques are crucial. Previous studies have achieved successful cultivation of A. phalaena larvae using a combination of three live feed organisms: ciliates Euplotes sp., rotifers Brachionus rotundiformis, and copepod Apocyclops royi nauplii during the first feeding stage. However, the specific contributions of these live feed organisms to larval survival and growth remain unclear. Moreover, the optimal feeding density for the critical initial live feed organism has not been determined experimentally. In this study, we aimed to enhance the larviculture protocol for A. phalaena by introducing oyster trochophores and addressing these knowledge gaps. Our experiments revealed that A. phalaena larvae could consume both oyster trochophores and Euplotes sp. during the first feeding stage. However, larva exhibited superior survival and growth performance when fed oyster trochophores. The optimal feeding density of oyster trochophores was determined to be 10 individuals (ind.)/mL, while a feeding density as high as 20 ind./mL resulted in decreased larval feeding incidence. These findings have significant implications for enhancing larval production programs of marine ornamental gobies and promoting their sustainable commercialization.

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“…The inclusion of micro- and macroalgae in aquafeeds has been recently studied in both freshwater and marine fish species [ 1 , 7 , 8 ], being believed that fish response to dietary algal inclusion is dose-dependent and species-specific [ 6 ]. Small dietary amounts of algae (2.5-10%) produced positive effects in fish growth performance, feed efficiency, lipid metabolism, body composition, stress response, liver function, and disease resistance, among others, in so far species studied [ 1 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Valorization of Seaweed Wracks: Inclusion as Additive in Diets for Grass Carp (Ctenopharyngodon idella)

Galindo

Rodríguez-González

Reis

et al. 2022

Aquaculture Nutrition

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Macroalgae have been recently described as a potential ingredient for aquafeeds, exerting several physiological benefits. Grass carp (Ctenopharyngodon idella) is a freshwater species, which has been the major fish species produced in the world in the last years. In order to determine the potential use of macroalgal wracks in fish feeding, C. idella juveniles were fed with an extruded commercial diet (CD) or the CD supplemented with 7% of a wind dried-powder (1 mm) from either a multispecific macroalgal wrack (CD + MU7) or a monospecific macroalgal wrack (CD + MO7) obtained from Gran Canaria island (Spain) coasts. After 100 days of feeding, survival, fish weight, and body indexes were determined, and muscle, liver, and digestive tract samples were collected. The total antioxidant capacity of macroalgal wracks was analyzed by assesing the antioxidant defense response and digestive enzymes activity in fish. Finally, muscle proximate composition, lipid classes (LC), and fatty acid (FA) profiles were also studied. Our results suggest that dietary inclusion of macroalgal wracks does not have negative effects on growth, proximate, and lipid composition, antioxidative status, or digestive capacity of C. idella. In fact, both macroalgal wracks caused a general lower fat deposition, and the multispecific wrack enhanced catalase activity in the liver.

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The effects of live prey and greenwater on the early larval rearing of orchid dottyback Pseudochromis fridmani

Cited by 12 publications

References 77 publications

Iron Fertilization Can Enhance the Mass Production of Copepod, Pseudodiaptomus annandalei, for Fish Aquaculture

Iron Fertilization Can Enhance the Mass Production of Copepod, Pseudodiaptomus annandalei, for Fish Aquaculture

First feeding of a marine ornamental fish, the White‐barred Goby Amblygobius phalaena: Investigating the optimal initial live feed organisms and optimal feeding density

Valorization of Seaweed Wracks: Inclusion as Additive in Diets for Grass Carp (Ctenopharyngodon idella)

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