Enhancement of dietary effect of Nannochloropsis sp. on juvenile Ruditapes philippinarum clams by alginate hydrolysates

Yamasaki, Yasuhiro; Ishii, Keita; Taga, Shigeru; Kishioka, Masanobu

doi:10.1016/j.aqrep.2017.11.006

Cited by 5 publications

(4 citation statements)

References 31 publications

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“…microencapsulates appear to be the most suitable diet for most of the studied bivalve species. This result is in agreement with Yamasaki et al [ 20 ], who found out that a Nannochloropsis sp.-enhanced diet promotes a significantly greater average shell length of R. philippinarum , a shortened rearing time, and provides a stable supply of algal diet. Nannochloropsis species have also been used for several decades to produce nutraceuticals and feed supplements, for both humans and animals [ 48 , 49 ].…”

Section: Discussionsupporting

confidence: 93%

“…The current microalgae choice relies on the fact that Nannochloropsis species (order Eustigmatales) may occur in both freshwater and marine environments and are known to contain a high concentration of polyunsaturated fatty acids (PUFAs), such as EPA (38.39%) [ 22 ]. They are used in aquaculture to feed a wide variety of marine organisms [ 20 ]. They are unicellular and planktonic, with either a 2–4 μm diameter subspherical or 3–4 × 1.5 μm cylindrical cells [ 45 ].…”

Section: Discussionmentioning

confidence: 99%

“…They are unicellular and planktonic, with either a 2–4 μm diameter subspherical or 3–4 × 1.5 μm cylindrical cells [ 45 ]. A species of Nannochloropsis genus was also found to be rich in phytosterols, cholesterol [ 46 ], carotenoids, polyphenols, and vitamins [ 47 ], and can be produced on a large scale at a low cost [ 20 ]. Nannochloropsis sp.…”

Section: Discussionmentioning

confidence: 99%

“…and Tetraselmis sp. are microalgae that can be produced on a large scale at a relatively low cost and are rich in eicosapentaenoic acid (EPA), an important long-chain omega-3 (ω-3), and polyunsaturated fatty acids (PUFAs), promoting an increase in shell length and the total weight of bivalves [ 20 , 21 , 22 ]. However, the problem of microalgae mass production for feeding bivalves is still very challenging.…”

Section: Introductionmentioning

confidence: 99%

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Microencapsulated Diets as an Alternative to Bivalve Feeding: Particle Size and Microalga Content Affect Feed Intake

Pereira

Pires

Rodrigues

et al. 2023

Animals

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Bivalve mollusks represent a nutritious source with a low environmental impact; as a result, they are one of the most attractive aquaculture options. Advances in microencapsulation technology offer great potential to face key bivalve nutrition problems, and an alga-based microencapsulated diet can turn enriched bivalves into potential functional foods. The central goal of this study was the evaluation of food intake as a function of particle size and microalga content following the supply of four microencapsulated diets, incorporating as core material Nannochloropsis sp. or Tetraselmis sp. in 20 or 40 µm diameter pellets (diets N20, T20, N40, and T40, respectively) in five bivalve species (Magallana gigas, Solen marginatus, Ruditapes decussatus, Ruditapes philippinarum, and Cerastoderma edule). Overall, all tested diets were easily ingested, although food intake was higher for N20 (except for the S. marginatus, which showed a higher rate for the diet T40). Concerning a size-related analysis, C. edule and S. marginatus favored, respectively, smaller and bigger pellet-sized diets, with no signs of selectivity for microalga species. The diet T20 was the lesser ingested, except for C. edule. This knowledge enables a better selection of feed with appropriate and species-adjusted profiles, contributing to the optimization of microencapsulated diets for bivalve rearing and a better final product.

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Section: Discussionsupporting

confidence: 93%