Dietary value of seaweeds occurring on the Pacific coast of Tohoku for growth of the abalone Haliotis discus hannai.

Uki, Nagahisa; Sugiura, Masayuki; Watanabe, Takeshi

doi:10.2331/suisan.52.257

Cited by 54 publications

(28 citation statements)

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“…However, no particular fatty acid was found to dramatically enhance growth of this abalone species. Conversely, PUFAs have been found to stimulate growth of H. discus hannai (Uki et al 1986a, 1986b; Mai et al 1996). The reason for this discrepancy is likely to be that previous researchers have used higher amounts of PUFAs in the diet, while in this study the aim was to maintain a generally low and similar amount of lipids across diets.…”

Section: Discussionmentioning

confidence: 99%

“…For example, Viana et al (1993) observed nearly four times faster growth rates in Haliotis fulgens juveniles fed artificial diets made of processed ingredients (fishmeal and casein) than those fed macroalgae. One of the main differences between formulated diets and seaweed diets is that macroalgae generally contain about 70–150 mg/g protein (Emmanuel and Corre 1996), and less lipids than carbohydrates (Uki et al 1986a). Conversely, artificial diets can be formulated to provide abalone with more balanced nutrients and an overall greater amount of protein and lipids to boost growth.…”

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confidence: 99%

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Alternative Protein Sources in Artificial Diets for New Zealand's Black‐Footed Abalone, Haliotis iris, Martyn 1784, Juveniles

Tung

2012

J World Aquaculture Soc

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Growth and health parameters were tested in juvenile New Zealand black‐footed abalone, Haliotis iris, fed nine diets containing different protein sources (white and red fishmeal, blood meal, meat and bone meal, casein, soybean concentrate, wheat gluten, maize gluten, and Spirulina powder) over a 5‐mo period. The growth parameters measured included shell length, total animal weight, and soft body and gonad weights. The health indicators included survival, goblet cell counts, and epithelium thickness of the tentacle region. Proximate analyses and amino acid and fatty acid profiles were also determined on the diets, soft body tissues and shell materials to evaluate the nutrient contents (diet and animal) and requirements (animal). Measurements of soft body, gonad, and shell growth parameters indicated that white and red fishmeals generally result in better growth. Animals fed blood meal had the lowest survival rates and crude protein contents. Spirulina produced animals with the heaviest shells and soybean treatments produced animals with the highest gonad to soft body ratios. Significantly lower acid/basic amino acid ratios were found in fishmeal diets, indicating that animals fed fishmeal may incorporate more aragonite than calcite in their shells.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Alternative Protein Sources in Artificial Diets for New Zealand's Black‐Footed Abalone, Haliotis iris, Martyn 1784, Juveniles

Tung

2012

J World Aquaculture Soc

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“…Studies on food values and efficiencies with several algal diets have also been reported ( Han et al . 1986 ; Uki et al . 1986 ; Sato & Notoya 1988; McShane et al .…”

Section: Introductionmentioning

confidence: 99%

Natural diet, feeding periodicity and functional response to food density of the abalone,Haliotis asininaL., (Gastropoda)

Tahil

Juinio-Meñez

1999

Aquaculture Research

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The natural food spectrums of the different size groups of abalone, Haliotis asinina L., from Tawi‐Tawi, southern Philippines, were determined by analysis of gut contents. Laboratory experiments were conducted to determine the feeding and defecation patterns and functional response of the abalone to varying food density under ambient water conditions. Like other tropical haliotids, H. asinina prefers red algae to brown algal species. Eighteen algal species, 72.2% of which are red algae (Rhodophyta), were observed in the gut contents of all size groups of abalone; Laurencia, Hypnea, Amphiroa and Coelothrix are the most frequent food species. Hypnea and Laurencia are also the most abundant food items of H. asinina. A chi‐square test indicated that frequency of occurrence (%) of most algal food species in the gut samples is independent of the size of the animal. About 84% of all algal species were observed in the gut contents of small abalone. Haliotis asinina (mean shell length ± SD = 3.48 ± 0.05 cm) showed a distinct nocturnal feeding periodicity and remained cryptic during daylight hours. Feeding activity was intense from 1800 to 0200 h, but it slowed down a few hours before sunrise, resulting in about 11 h of feeding time within a 24‐h cycle. Defecation occurred during the feeding period in proportion to the amount of food consumed and faecal production during the night was significantly higher than during the daylight hours. The total daily faecal output was 1.26 mg dry weight abalone–1. The experiments showed that H. asinina (mean shell length ± SD = 3.55 ± 0.02 cm) consumed more food when food density increased in linear proportion to food abundance. However, food consumption levelled off at a food density equivalent to 35% of body weight.

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“…Conversely, this suggests that juvenile macroalgae are potentially an important food source for many herbivorous animals inhabiting rocky reefs. Although the importance of adult macroalgae in diets of herbivorous animals has been well documented [4][5][6][7], there are only a few studies on the dietary value of juvenile macroalgae for herbivorous animals [8,9].…”

Section: Introductionmentioning

confidence: 99%

Dietary value of gametophytes and juvenile sporophytes of the brown macroalga Eisenia bicyclis for juvenile abalone Haliotis diversicolor

et al. 2010

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The dietary value of juvenile stages (gametophyte and juvenile sporophyte) of the brown macroalga Eisenia bicyclis for post-larval and juvenile abalone Haliotis diversicolor of 2.0-6.5 mm in shell length (SL) was examined and compared with that of a benthic diatom, Nitzschia sp., in laboratory experiments. Most abalone actively fed on these diets, but there were large variations in the growth rate among the diets and among the growth stages of abalone. Growth rates of abalone fed on Nitzschia sp. were highly variable within each growth stage, but showed no clear differences among growth stages. In contrast, in abalone fed gametophytes or juvenile sporophytes, growth rates linearly increased as abalone grew. Growth rates of[60 lm SL/day were observed in juveniles of [3 mm SL fed gametophytes, and juveniles of [5 mm SL fed juvenile sporophytes. These results indicate that the dietary value of the juvenile stages of E. bicyclis for the abalone changes as they grow, and with growth juvenile abalone begin to efficiently utilize gametophytes and juvenile sporophytes in that order.

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Dietary value of seaweeds occurring on the Pacific coast of Tohoku for growth of the abalone Haliotis discus hannai.

Cited by 54 publications

References 0 publications

Alternative Protein Sources in Artificial Diets for New Zealand's Black‐Footed Abalone, Haliotis iris, Martyn 1784, Juveniles

Alternative Protein Sources in Artificial Diets for New Zealand's Black‐Footed Abalone, Haliotis iris, Martyn 1784, Juveniles

Natural diet, feeding periodicity and functional response to food density of the abalone,Haliotis asininaL., (Gastropoda)

Dietary value of gametophytes and juvenile sporophytes of the brown macroalga Eisenia bicyclis for juvenile abalone Haliotis diversicolor

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