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Chang, M. B.; Southgate, Paul C.

doi:10.1023/a:1011363807074

Cited by 45 publications

(15 citation statements)

References 19 publications

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“…The effect might have been caused by the lack of sufficient DHA as mortality rates in our experiment decreased after applying enriched Artemia nauplii (abundant in DHA) starting at day 5 (data not shown here). Higher survival and growth rates as a result of the application of enriched Artemia nauplii were also reported by Chang and Southgate (2001), Quintas et al (2010), Willadino et al (2012), and Segade et al (2014). Survival rates further stabilized after the application of diets Art and Art/Cop, which provided higher amounts of DHA as well as greater DHA:EPA and n-3:n-6 HUFA ratios than the former diets (Tables 3, 4).…”

Section: General Nutritional Problems In Juvenile Seahorsessupporting

confidence: 65%

“…Moreover, the availability of the highly unsaturated fatty acids (HUFAs) arachidonic acid (AA, C20:4n-6), eicosapentaenoic acid (EPA, C20:5n-3), and docosahexaenoic acid (DHA, C22:6n-3) is important for the health of marine fish larvae (Bell et al, 1986;Watanabe, 1993;Cahu et al, 2003;De Silva et al, 2012). In fact, Chang and Southgate (2001) found a significant correlation between mean survival of Hippocampus spp. juveniles and dietary n3-HUFA, EPA, and DHA contents.…”

Section: Introductionmentioning

confidence: 95%

“…Other factors that might have contributed to the superior growth and survival of juveniles of treatment Art/Cop are HUFA ratios, proteins, and antioxidants. It was previously shown that the proper DHA:EPA ratio in favor of DHA plays an important role in fish larval development, growth and survival (Watanabe, 1993;Shields et al, 1999;Chang and Southgate, 2001). Additionally, EPA:AA ratios influence stress resistance and immune response because these fatty acids constitute precursors of pro-and anti-inflammatory eicosanoids (Ullrey, 1995;Mc Donald et al, 2002).…”

Section: Effects Of Feed Species Vs Hufa Compositionmentioning

confidence: 99%

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Effects of Feed Species and HUFA Composition on Survival and Growth of the Longsnout Seahorse (Hippocampus reidi)

et al. 2016

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Globally, wild seahorse populations are threatened due to, habitat destruction and unsustainable human exploitation among others. Furthermore, aquaculture-based mass-scale rearing is still uncommon due to the low survival rates of seahorse juveniles and exceptionally high feed costs. Previous studies have demonstrated the importance of both highly unsaturated fatty acid (HUFA) supplies and a copepod-based rearing for seahorse survival and growth. As the latter is expensive, the question arises as to how high survival rates of seahorse juveniles can be assured under low-to moderate-cost feed regimes. In particular, it remains unknown whether the diet species or their dietary HUFA profiles determine the successful development of seahorse fry. Therefore, the aims of this study were to assess the dependence of growth and survival rates of Hippocampus reidi brood on the animal feed and to infer the impact of feed species vs. dietary HUFA profiles on juvenile growth. A nutrition experiment was conducted where juveniles were treated either with enriched Artemia nauplii (low-cost diet Art) or with a mixed diet of Artemia and copepods (moderate-cost diet Art/Cop). Larval survival and growth were analyzed using Cox proportional-hazard and linear mixed-effect model analyses. We found that (i) both diets enabled good survival, (ii) diet Art/Cop resulted in superior weight and height growth, and (iii) the differential effects of diets Art/Cop and Art cannot be explained by their different HUFA compositions alone. From an economical point of view, our findings of high survival rates and relatively high growth rates with the medium-cost treatment Art/Cop may open new possibilities for the large-scale rearing of seahorses. Even the application of a low-cost Art diet might be appropriate for seahorse aquacultures as both survival and growth rates are only marginally lower compared to the former diet.

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Section: General Nutritional Problems In Juvenile Seahorsessupporting

confidence: 65%

Section: Introductionmentioning

confidence: 95%

Section: Effects Of Feed Species Vs Hufa Compositionmentioning

confidence: 99%

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Effects of Feed Species and HUFA Composition on Survival and Growth of the Longsnout Seahorse (Hippocampus reidi)

et al. 2016

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“…Hence, even though mysidaceans might be considered a high quality prey for some seahorse species, it is very likely not suitable for breeding H. guttulatus when administered as the sole prey. Unfortunately, nutritional requirements in seahorses are unknown, and provision of suitable food sources for ex-situ culture often represents a serious constraint (Chang and Southgate, 2001) as not all species seem to have the same nutritional needs, as suggested by inter-speci c differences in FA pro les (Lin et al, 2008a). Consequently, mixed diets (present study) and/or dietary supplementation would potentially reduce some nutritional de ciencies of single prey (Palma et al, 2012(Palma et al, , 2017.…”

Section: Discussionmentioning

confidence: 93%

“…Aquaculture represents a valid alternative to wild captured seahorses but ex-situ production still needs to face several biological and technical challenges (Cohen et al, 2016;Planas et al, 2017a). Both, low spawning quality and juvenile survival rates are the most critical factors for optimizing commercial seahorse aquaculture (Adams et al, 2001;Chang and Southgate, 2001;Lin et al, 2007). Reproduction represents a key aspect in breeding success, and broodstock feeding / nutrition is doubtless, one of the key factors to sustain reproduction in teleost (Migaud et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

A multidisciplinary experimental study on the effects of breeders diet on newborn seahorses (Hippocampus guttulatus)

Planas

Olivotto

González

et al. 2020

Preprint

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The global trade in seahorses is increasing and new rearing techniques are currently available for a few species. One of the main bottlenecks in seahorse production is reproduction success, which is dependent upon the administration of high quality diets to breeders. However, very little is known about the most adequate diets, on how they should be administered and on how they might affect newborn performance. In this study, three homogeneous groups of adult seahorses Hippocampus guttulatus were maintained in captivity. Each group was fed on one of the following diets since the onset of the breeding period: Unenriched adult Artemia (Diet A), unenriched adult Artemia and mysidaceans (Diet AM) and mysidaceans (Diet M). As a positive control we used a wild pregnant male. The mixed diet AM provided the highest overall breeding success and reasonable fatty acid profiles, and better resembled newborn from a wild male. The use of only mysidaceans (Diet M) provided the worse results in spite of the high DHA content. Significant differences were observed in newborn characteristics and fatty acid profiles among dietary groups and along the breeding season, especially in total n-3 HUFA and DHA. Monospecific diets including Artemia or mysidaceans very likely suffered nutritional deficiencies, which were reflected in morphological alterations of the muscle tissue (diet A) or abnormal early mortalities in newborn (diet M). Three progressive stages were identified along the whole breeding period: Initial mixed capital-income period (100 – 120 days since the onset of the breeding period), followed by an inflexion period (short transitional stage - income sources), and finally a long period characterized by the use of income sources and the progressive exhaustion of body reserves. Special attention should be deserved to the progressive changes in fatty acid profiles along the breeding season, resulting in a decrease in newborn performance. Considering the time required for a diet to be reflected in newborn, we recommend Hippocampus guttulatus breeders to be fed on a high quality diet for at least three months prior the breeding period.

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Rearing the Coral Seahorse, Hippocampus Barbouri, on Live and Inert Prey

Payne¹

2003

Marine Ornamental Species

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Cited by 45 publications

References 19 publications

Effects of Feed Species and HUFA Composition on Survival and Growth of the Longsnout Seahorse (Hippocampus reidi)

Effects of Feed Species and HUFA Composition on Survival and Growth of the Longsnout Seahorse (Hippocampus reidi)

A multidisciplinary experimental study on the effects of breeders diet on newborn seahorses (Hippocampus guttulatus)

Rearing the Coral Seahorse, Hippocampus Barbouri, on Live and Inert Prey

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