A simple technique for detection of feeding in newly metamorphosed abalone

Norman-Boudreau, Karen; Burns, Darren; Cooke, Catherine; Austin, A. P.

doi:10.1016/0044-8486(86)90322-4

Cited by 26 publications

(12 citation statements)

References 4 publications

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“…The first ingestion of benthic diatoms has been observed as early as 2 days after settlement by postlarvae of other abalone species (Seki & Kan-no 198 la;Norman-Boudreau et al 1986; although this may be as late as 10 days post-settlement (Kitting & Morse 1997). First ingestion of diatoms by H. australis occurs between 13-14 rows and 16-17 rows of teeth in the radula.…”

Section: Discussionmentioning

confidence: 98%

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Factors affecting settlement and early post‐settlement survival of the New Zealand abaloneHaliotis australis

Moss¹

1999

New Zealand Journal of Marine and Freshwater Research

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This paper describes studies on the settlement of the abalone Haliotis australis Gmelin. Ten-day-old H. australis larvae had a slower rate of settlement than 5-day-old larvae. A high proportion of veliger larvae had the ability to prolong the searching phase of settlement and delay metamorphosis, even over prepared settlement surfaces but radula development continued at a similar rate in both settled and swimming larvae. In any one batch of larvae settlement was slow and asynchronous and post-settlement survival was low. Light was shown to influence the swimming behaviour of larvae in settlement tanks, with more larvae swimming in the dark than in the light. The implications of these behaviours are discussed in relation to larval and postlarval energetics and feeding.

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Section: Discussionmentioning

confidence: 98%

“…Five to 10 larvae were examined at each stage of shell growth and the development of the radula determined using a radula squash preparation ). The stomach contents were also examined for the presence or absence of diatoms (Norman-Boudreau et al 1986). …”

Section: Rate Of Settlement On Different Surfacesmentioning

confidence: 99%

Factors affecting settlement and early post‐settlement survival of the New Zealand abaloneHaliotis australis

Moss¹

1999

New Zealand Journal of Marine and Freshwater Research

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“…Haliotis iris efficiently ingest a small diatom strain by two days after settlement induction (larvae were 10 days old at 16°C when settled). Norman‐Boudreau et al first found diatoms in the guts of post‐larval abalone 2–6 days after settlement, 28 whereas Moss found them only after 7 days, 17 and Kitting and Morse observed no ingestion of ‘cellular solids’ from coralline surfaces in the first 10 days post‐settlement 16 . This variation is probably partly related to the nature of the diatoms present.…”

Section: Discussionmentioning

confidence: 99%

Radula development in abalone Haliotis discus hannai from larva to adult in relation to feeding transitions

et al. 2001

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The radula morphology of Haliotis discus hannai was examined by scanning electron microscope from the larval to the adult stage. The radula of competent larvae contained 11–13 transverse rows of teeth after 6–7 days at 20°C. The number of rows increased to 25–30 during the first several days after settlement, but then remained approximately constant throughout the post‐larval period, increasing again in abalone larger than 4 mm in shell length (SL). In post‐larvae < ~1 mm SL, only two pairs of lateral teeth (L1, L2) were present in the larval radula. An additional three pairs of lateral teeth (L3–L5) were added progressively as post‐larvae grew from 0.9 mm to 1.9 mm SL. Marginal teeth were added steadily from one pair in larvae to 30–40 pairs at 3–4 mm SL, 70–80 pairs in 30–40 mm juveniles, and 70–90 pairs in 90–100 mm adults. The serrations on the working edges of the rachidian (R) and lateral teeth became less pronounced as the abalone grew. Nearly all serrations disappeared from the rachidian (R) and inner lateral teeth (L1, L2) by ~2 mm SL, and from the outer lateral teeth (L3–L5) by 20 mm SL. For abalone larger than 1.5 mm SL, the L3–L5 teeth became longer and more pointed, which increased the space between adjacent rows of teeth. Post‐larvae < 1 mm SL had highly curved teeth with clearance angles of approximately or less than zero, whereas larger abalone had positive clearance angles. These radula developments appear to be related to transitions in feeding habits from microbial to macroalgal diets.

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“…Approximately 22-26 parallel and evenly distributed striae are present per 10 μm body length. The alga measures 10.8-12.87 μm in length and 2.97-3.44 μm in width-a size suitable for the early juvenile stage of abalone (Norman-Boudreau et al 1986). It is classified as a small periphitic diatom that is acceptable for sea urchin larvae (Ito and Kitamura 1997).…”

Section: Algal Culturementioning

confidence: 99%

“…The current juvenile seed production of the tropical abalone Haliotis asinina in the Southeast Asian Fisheries Development Center Aquaculture Department (SEAFDEC/AQD) relies on the natural populations of mixed diatoms in the rearing tanks. This culture method does not provide the continuous supply of suitable diatom species needed by the abalone larvae (Ebert and Houk 1984;Norman-Boudreau et al 1986). The provision of preferred diatom species for the growth and survival of juvenile abalones is required (Uki and Kikuchi 1979).…”

Section: Introductionmentioning

confidence: 99%

Cell growth and nutritive value of the tropical benthic diatom, Amphora sp., at varying levels of nutrients and light intensity, and different culture locations

Peña

2007

J Appl Phycol

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Two series of experiments were conducted to determine suitable growth factors for the mass propagation of the local algal isolate Amphora sp. A higher growth rate of 0.2 doubling (μ) day −1 was attained at a lower photosynthetic photon flux density (PPFD; 11.4 μmol photon m −2 s −1 ) compared to cultures exposed to higher levels of PPFD (16.1 μmol photon m −2 s −1 , −0.1 μ day −1 ; 31.3 μmol photon m −2 s −1 , 0.0 μ day −1 ). Cultures located inside the laboratory had a significantly higher cell density (133×10 4 cells cm −2 ) and growth rate (0.3 μ day −1 ) compared to those located outdoors (100×10 4 cells cm −2 , 0.2 μ day −1 ). A comparison of nutrient medium across two locations showed that lipid content was significantly higher in cultures enriched with F/2MTM (macronutrients + trace metals) and F/2MV (macronutrients + vitamins). Saturated fatty acids were also present in high concentrations in cultures enriched with F/2M (macronutrients only). Significantly higher amounts of saturated fatty acids were observed in cultures located outdoors (33.1%) compared to those located indoors (26.6%). The protein, carbohydrates and n-6 fatty acid content of Amphora sp. were influenced by the location and enrichment of the cultures. This study has identified growth conditions for mass culture of Amphora sp. and determined biochemical composition under those culture conditions.

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A simple technique for detection of feeding in newly metamorphosed abalone

Cited by 26 publications

References 4 publications

Factors affecting settlement and early post‐settlement survival of the New Zealand abaloneHaliotis australis

Factors affecting settlement and early post‐settlement survival of the New Zealand abaloneHaliotis australis

Radula development in abalone Haliotis discus hannai from larva to adult in relation to feeding transitions

Cell growth and nutritive value of the tropical benthic diatom, Amphora sp., at varying levels of nutrients and light intensity, and different culture locations

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