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De Schryver Peter - One of the best experts on this subject based on the ideXlab platform.

  • Determination of poly‐β‐hydroxybutyrate assimilation by Postlarval whiteleg shrimp, Litopenaeus vannamei using stable 13C isotope tracing
    'Wiley', 2020
    Co-Authors: Ludevese‐pascual Gladys, Laranja, Joseph Leopoldo, Amar Edgar, Bossier Peter, Ahmed Farhana, De Troch Marleen, Bodé Samuel, Boeckx Pascal, De Schryver Peter
    Abstract:

    A preliminary study was conducted to demonstrate fate of the bacterial storage compound poly-beta-hydroxybutyrate (PHB) once ingested and degraded in vivo in crustaceans. The 2% supplementation of C-13-labeled Ralstonia eutropha DSM545 containing 75% PHB on dry weight in Postlarval whiteleg shrimp, Litopenaeus vannamei resulted in consistent enrichment of two fatty acids (containing 14-24 carbons [C] in length) pentadecanoic acid (15:0) and palmitic acid (16:0) in all lipid fractions. This could indicate that C-13 signal may not only originate from the PHB but partly from the structural components of the bacterial cell. There was a trend of lower C-13 enrichment in various lipid fractions of the Postlarvae as compared to the diet. These findings may have important implications as to potential of PHB as energy source rather than as building block. There was a rapid transfer of C-13 in the Postlarvae as seen by the significant C-13 enrichment in the tissues 4 hr after feeding with labeled bacterial cells. Overall, the assimilation of PHB in crustacean tissues is demonstrated for the first time. Our results indicate that PHB once ingested is rapidly assimilated in the tissues and could probably act as an energy source rather than as a building block

  • Determination of poly‐beta‐hydroxybutyrate assimilation by Postlarval whiteleg shrimp, Litopenaeus vannamei using stable 13C isotope tracing
    'Wiley', 2020
    Co-Authors: Ludevese-pascual Gladys, Laranja, Joseph Leopoldo, Amar Edgar, Bossier Peter, Ahmed Farhana, De Troch Marleen, Bodé Samuel, Boeckx Pascal, De Schryver Peter
    Abstract:

    A preliminary study was conducted to demonstrate fate of the bacterial storage compound poly-β-hydroxybutyrate (PHB) once ingested and degraded in vivo in crustaceans. The 2% supplementation of 13C-labeled Ralstonia eutropha DSM545 containing 75% PHB on dry weight in Postlarval whiteleg shrimp, Litopenaeus vannamei resulted in consistent enrichment of two fatty acids (containing 14–24 carbons [C] in length) pentadecanoic acid (15:0) and palmitic acid (16:0) in all lipid fractions. This could indicate that 13C signal may not only originate from the PHB but partly from the structural components of the bacterial cell. There was a trend of lower 13C enrichment in various lipid fractions of the Postlarvae as compared to the diet. These findings may have important implications as to potential of PHB as energy source rather than as building block. There was a rapid transfer of 13C in the Postlarvae as seen by the significant 13C enrichment in the tissues 4 hr after feeding with labeled bacterial cells. Overall, the assimilation of PHB in crustacean tissues is demonstrated for the first time. Our results indicate that PHB once ingested is rapidly assimilated in the tissues and could probably act as an energy source rather than as a building block

  • Artificial substratum consisting of poly-β-hydroxybutyrate-based biodegradable plastic improved the survival and overall performance of Postlarval tiger shrimp Penaeus monodon
    'Wiley', 2019
    Co-Authors: Ludevese-pascual Gladys, Laranja, Joseph Leopoldo, Amar Edgar, Bossier Peter, De Schryver Peter
    Abstract:

    The use of artificial substratum consisting of poly‐β‐hydroxybutyrate (PHB)‐based biodegradable plastic for penaeid shrimp culture was investigated in the present study. The survival of Postlarval tiger shrimp Penaeus monodon (30 ± 5 mg) provided with PHB substratum made out of PHB type DP9002 (Metabolix GmbH, Köln, Germany) was 88.7 ± 3.4% and this was significantly higher as compared to Postlarvae provided conventional substratum consisting of polyvinylchloride (PVC) pipes (67.3 ± 6.5%). However, no significant weight improvement was observed for the Postlarval tiger shrimp indicating that PHB could not be used as growth promoter. Nevertheless, a trend of improved robustness against adverse environmental conditions (lethal ammonium chloride concentration) and increased resistance to pathogenic Vibrio was observed in Postlarval tiger shrimp provided with PHB substratum as compared to Postlarvae provided with PVC substratum. Results indicate higher preference by Postlarvae on PHB substratum over PVC substratum. Overall, this study indicates the potential of artificial substratum consisting of PHB‐based biodegradable plastic as replacement for conventional substratum consisting of PVC pipes in enhancing the survival of Postlarval tiger shrimp and improving its performance against adverse environmental conditions and disease resistance.This study was funded by the Flemish Interuniversity Council (VLIR)

  • Artificial substratum consisting of poly-β-hydroxybutyrate-based biodegradable plastic improved the survival and overall performance of Postlarval tiger shrimp Penaeus monodon
    'Wiley', 2019
    Co-Authors: Ludevese-pascual Gladys, Laranja, Joseph Leopoldo, Amar Edgar, Bossier Peter, De Schryver Peter
    Abstract:

    The use of artificial substratum consisting of poly-beta-hydroxybutyrate (PHB)-based biodegradable plastic for penaeid shrimp culture was investigated in the present study. The survival of Postlarval tiger shrimp Penaeus monodon (30 +/- 5 mg) provided with PHB substratum made out of PHB type DP9002 (Metabolix GmbH, Koln, Germany) was 88.7 +/- 3.4% and this was significantly higher as compared to Postlarvae provided conventional substratum consisting of polyvinylchloride (PVC) pipes (67.3 +/- 6.5%). However, no significant weight improvement was observed for the Postlarval tiger shrimp indicating that PHB could not be used as growth promoter. Nevertheless, a trend of improved robustness against adverse environmental conditions (lethal ammonium chloride concentration) and increased resistance to pathogenic Vibrio was observed in Postlarval tiger shrimp provided with PHB substratum as compared to Postlarvae provided with PVC substratum. Results indicate higher preference by Postlarvae on PHB substratum over PVC substratum. Overall, this study indicates the potential of artificial substratum consisting of PHB-based biodegradable plastic as replacement for conventional substratum consisting of PVC pipes in enhancing the survival of Postlarval tiger shrimp and improving its performance against adverse environmental conditions and disease resistance

  • Poly-beta-hydroxybutyrate-enriched Artemia sp. for giant tiger prawn Penaeus monodon larviculture
    'Wiley', 2017
    Co-Authors: Ludevese-pascual Gladys, Bossier Peter, Laranja, Joseph Leopoldo Q., Amar, Edgar C., Sorgeloos Patrick, De Schryver Peter
    Abstract:

    The beneficial effects of PHB as supplement for giant tiger prawn Penaeus monodon Postlarvae using a short-term enrichment strategy via Artemia were examined. The effects of co-supplementing with a lipid emulsion were also evaluated to determine whether it yielded an additional benefit. Results on the average weight and larval development were not significantly different among Postlarvae fed the different dietary treatments, indicating that PHB supplementation could not be used to stimulate growth in P. monodon Postlarvae while such positive results have been reported in other aquaculture species. Nonetheless, significantly higher survival was obtained in Postlarvae fed PHB-enriched Artemia irrespective of lipid enrichment. In addition, PHB increased the survival of the Postlarvae after exposure to a lethal dose of ammonia. Lipid supplementation nullified this effect. The cumulative mortality of Postlarvae subjected to a sublethal concentration of ammonia for 24 h and subsequent exposure to pathogenic Vibrio campbelli showed that PHB but not lipids could effectively enhance the resistance of the Postlarvae. Co-supplementing lipids even significantly decreased this outcome. Our study indicates that PHB supplementation increases the quality of larval P. monodon and their chance of surviving under adverse environmental conditions. The short-term co-supplementation with lipid emulsion did not add to these effects

M J Butler - One of the best experts on this subject based on the ideXlab platform.

  • temporal patterns and transport processes in recruitment of spiny lobster panulirus argus Postlarvae to south florida
    Marine Biology, 1997
    Co-Authors: C A Acosta, T R Matthews, M J Butler
    Abstract:

    We used time-series analysis to identify weekly and annual patterns in the supply of spiny lobster, Panulirus argus (Latreille, 1804), Postlarvae to the Florida Keys, USA, over an 8 yr period. We also investigated the relationship between Postlarval influx and wind forcing as a transport mechanism using the complex vector-scalar correlation analysis. Postlarval supply had a lunar phase periodicity at 4.5 wk intervals, with Postlarval abundance peaking between the new moon and first-quarter lunar phases. A distinct annual cycle of Postlarval supply with two peak periods was also apparent. Cross-correlation analysis between relative Postlarval abundance and a 12 mo cycle showed that the annual peak occurs in spring, centered around March. With the 12 mo periodicity removed, a smaller peak at 5 mo intervals was also well defined. Wind-forcing for 7 d prior to the time of Postlarval collection was marginally correlated with Postlarval abundance through the entire time-series; the association was strongest during the late fall to early spring months. The analysis indicated that Postlarval supply was correlated with winds from the northeast (ca. 45°), which are associated with winter atmospheric fronts. In contrast to results reported for other spiny lobster populations, these patterns suggest that recruitment of lobster Postlarvae to south Florida is predictable only at a gross level and is presumably affected by the temporally inconsistent structure of regional oceanic gyres and variability in the timing of lobster spawning in the Caribbean.

  • settlement of spiny lobster panulirus argus latreille 1804 in florida pattern without predictability
    Crustaceana, 1994
    Co-Authors: William F Herrnkind, M J Butler
    Abstract:

    We used plankton nets, floating Postlarval collectors, and arrays of benthic settling devices, along with diver surveys of juvenile lobster abundance and nursery habitat structure, to estimate the spatial pattern of settlement, abundance of settlers, and characteristics of postsettlement juvenile Panulirus argus populations in Florida Bay, the primary nursery for spiny lobsters in Florida. Within a 200 km 2 region of Florida Bay, settlement was patchy and locally unpredictable, although settlement occurred at most sites each lunar phase. However, the number of Postlarvac entering inlets to the bay was significantly correlated with regional settlement, and areas with abundant red macroalgae (settlement substrate) and numerous sponges (benthic juvenile shelter) were the most productive sites, even though settlement within them varied widely during lunar influxes. Floating collector catches accurately estimated the number of Postlarvae in the water column at inlets, but results from collectors deployed in the bay did not correlate with the number of Postlarvae settling on benthic collectors nearby. Estimates of postsettlement mortality in the field yield a natural mortality of about 97% in the year following settlement.

Ludevese-pascual Gladys - One of the best experts on this subject based on the ideXlab platform.

  • Determination of poly‐beta‐hydroxybutyrate assimilation by Postlarval whiteleg shrimp, Litopenaeus vannamei using stable 13C isotope tracing
    'Wiley', 2020
    Co-Authors: Ludevese-pascual Gladys, Laranja, Joseph Leopoldo, Amar Edgar, Bossier Peter, Ahmed Farhana, De Troch Marleen, Bodé Samuel, Boeckx Pascal, De Schryver Peter
    Abstract:

    A preliminary study was conducted to demonstrate fate of the bacterial storage compound poly-β-hydroxybutyrate (PHB) once ingested and degraded in vivo in crustaceans. The 2% supplementation of 13C-labeled Ralstonia eutropha DSM545 containing 75% PHB on dry weight in Postlarval whiteleg shrimp, Litopenaeus vannamei resulted in consistent enrichment of two fatty acids (containing 14–24 carbons [C] in length) pentadecanoic acid (15:0) and palmitic acid (16:0) in all lipid fractions. This could indicate that 13C signal may not only originate from the PHB but partly from the structural components of the bacterial cell. There was a trend of lower 13C enrichment in various lipid fractions of the Postlarvae as compared to the diet. These findings may have important implications as to potential of PHB as energy source rather than as building block. There was a rapid transfer of 13C in the Postlarvae as seen by the significant 13C enrichment in the tissues 4 hr after feeding with labeled bacterial cells. Overall, the assimilation of PHB in crustacean tissues is demonstrated for the first time. Our results indicate that PHB once ingested is rapidly assimilated in the tissues and could probably act as an energy source rather than as a building block

  • Artificial substratum consisting of poly-β-hydroxybutyrate-based biodegradable plastic improved the survival and overall performance of Postlarval tiger shrimp Penaeus monodon
    'Wiley', 2019
    Co-Authors: Ludevese-pascual Gladys, Laranja, Joseph Leopoldo, Amar Edgar, Bossier Peter, De Schryver Peter
    Abstract:

    The use of artificial substratum consisting of poly‐β‐hydroxybutyrate (PHB)‐based biodegradable plastic for penaeid shrimp culture was investigated in the present study. The survival of Postlarval tiger shrimp Penaeus monodon (30 ± 5 mg) provided with PHB substratum made out of PHB type DP9002 (Metabolix GmbH, Köln, Germany) was 88.7 ± 3.4% and this was significantly higher as compared to Postlarvae provided conventional substratum consisting of polyvinylchloride (PVC) pipes (67.3 ± 6.5%). However, no significant weight improvement was observed for the Postlarval tiger shrimp indicating that PHB could not be used as growth promoter. Nevertheless, a trend of improved robustness against adverse environmental conditions (lethal ammonium chloride concentration) and increased resistance to pathogenic Vibrio was observed in Postlarval tiger shrimp provided with PHB substratum as compared to Postlarvae provided with PVC substratum. Results indicate higher preference by Postlarvae on PHB substratum over PVC substratum. Overall, this study indicates the potential of artificial substratum consisting of PHB‐based biodegradable plastic as replacement for conventional substratum consisting of PVC pipes in enhancing the survival of Postlarval tiger shrimp and improving its performance against adverse environmental conditions and disease resistance.This study was funded by the Flemish Interuniversity Council (VLIR)

  • Artificial substratum consisting of poly-β-hydroxybutyrate-based biodegradable plastic improved the survival and overall performance of Postlarval tiger shrimp Penaeus monodon
    'Wiley', 2019
    Co-Authors: Ludevese-pascual Gladys, Laranja, Joseph Leopoldo, Amar Edgar, Bossier Peter, De Schryver Peter
    Abstract:

    The use of artificial substratum consisting of poly-beta-hydroxybutyrate (PHB)-based biodegradable plastic for penaeid shrimp culture was investigated in the present study. The survival of Postlarval tiger shrimp Penaeus monodon (30 +/- 5 mg) provided with PHB substratum made out of PHB type DP9002 (Metabolix GmbH, Koln, Germany) was 88.7 +/- 3.4% and this was significantly higher as compared to Postlarvae provided conventional substratum consisting of polyvinylchloride (PVC) pipes (67.3 +/- 6.5%). However, no significant weight improvement was observed for the Postlarval tiger shrimp indicating that PHB could not be used as growth promoter. Nevertheless, a trend of improved robustness against adverse environmental conditions (lethal ammonium chloride concentration) and increased resistance to pathogenic Vibrio was observed in Postlarval tiger shrimp provided with PHB substratum as compared to Postlarvae provided with PVC substratum. Results indicate higher preference by Postlarvae on PHB substratum over PVC substratum. Overall, this study indicates the potential of artificial substratum consisting of PHB-based biodegradable plastic as replacement for conventional substratum consisting of PVC pipes in enhancing the survival of Postlarval tiger shrimp and improving its performance against adverse environmental conditions and disease resistance

  • Poly-beta-hydroxybutyrate-enriched Artemia sp. for giant tiger prawn Penaeus monodon larviculture
    'Wiley', 2017
    Co-Authors: Ludevese-pascual Gladys, Bossier Peter, Laranja, Joseph Leopoldo Q., Amar, Edgar C., Sorgeloos Patrick, De Schryver Peter
    Abstract:

    The beneficial effects of PHB as supplement for giant tiger prawn Penaeus monodon Postlarvae using a short-term enrichment strategy via Artemia were examined. The effects of co-supplementing with a lipid emulsion were also evaluated to determine whether it yielded an additional benefit. Results on the average weight and larval development were not significantly different among Postlarvae fed the different dietary treatments, indicating that PHB supplementation could not be used to stimulate growth in P. monodon Postlarvae while such positive results have been reported in other aquaculture species. Nonetheless, significantly higher survival was obtained in Postlarvae fed PHB-enriched Artemia irrespective of lipid enrichment. In addition, PHB increased the survival of the Postlarvae after exposure to a lethal dose of ammonia. Lipid supplementation nullified this effect. The cumulative mortality of Postlarvae subjected to a sublethal concentration of ammonia for 24 h and subsequent exposure to pathogenic Vibrio campbelli showed that PHB but not lipids could effectively enhance the resistance of the Postlarvae. Co-supplementing lipids even significantly decreased this outcome. Our study indicates that PHB supplementation increases the quality of larval P. monodon and their chance of surviving under adverse environmental conditions. The short-term co-supplementation with lipid emulsion did not add to these effects

Olimpia Carrillo - One of the best experts on this subject based on the ideXlab platform.

  • Psychrobacter sp. 17-1 enhances growth and survival in early Postlarvae of white shrimp, Penaeus vannamei Boone, 1931 (Decapoda, Penaeidae)
    Crustaceana, 2016
    Co-Authors: Ramón Franco, Amilcar Arenal, Leonardo Martín, Y. Martinez, Dayamí Santiesteban, Jorge Sotolongo, Eulogio Pimentel, Olimpia Carrillo
    Abstract:

    The effects of Psychrobacter sp., isolated from the gut of shrimp Penaeus vannamei Boone, 1931, on growth, digestive enzyme activities, total protein content, osmotic stress resistance, immunity and disease resistance of Postlarvae were investigated. For enzymatic activities assays whole Postlarvae were homogenized. Shrimp subjected to Psychrobacter sp. treatment showed higher weight (40%) and length (5.6%) than that observed in untreated animals. Compared to the untreated control group, levels of protease and amylase activities in Postlarvae, were higher in the probiotic group. Postlarvae treated with Psychrobacter sp. showed significantly increase in the survival compared to the untreated ones after osmotic stress. Nitric oxide metabolite levels and the enzymatic activities of phenoloxidase, superoxide dismutase and peroxidase from treated Postlarvae were significantly higher than untreated Postlarvae. Increased survival was also found after challenge with Aeromonas sp. This is the first study that demonstrates the probiotic effect of Psychrobacter sp. in P. vannamei Postlarvae.

  • ontogenetic changes of innate immune parameters from eggs to early Postlarvae of white shrimp litopenaeus vannamei crustacea decapoda
    Aquaculture, 2012
    Co-Authors: Leonardo Martín, Ramón Franco, Amilcar Arenal, Dayamí Santiesteban, Jorge Sotolongo, Nestor M Castillo, George Rodriguez, Alina Forrellat, Georgina Espinosa, Olimpia Carrillo
    Abstract:

    Abstract To date, little is known about the immune system during early ontogeny for crustaceans with high commercial value, such as white shrimp ( Litopenaeus vannamei ). The aim of this study was to characterize several immunological parameters during ontogeny (from eggs to early Postlarvae) of L. vannamei under farming conditions. Phenoloxidase activity showed the highest peak 3.6 ± 0.4 × 10 − 2  U μg − 1 at the first nauplius stage, followed by a continuous decrease until dropping to 14% of the peak value in early Postlarval (PL) stages. Superoxide dismutase activity reached the highest peak 9.9 ± 0.3 × 10 − 3  U μg − 1 after metamorphosis to the protozoea stage, then to half that value after metamorphosis to mysis stage and kept dropping until reaching a minimum of 0.5 ± 0.4 × 10 − 3  U μg − 1 in PL stages. In larval stages peroxidase activity showed a maximum of 2.5 ± 0.4 × 10 − 6  U μg − 1 after metamorphosis to mysis, and a gradual increase was observed in PL stages until attaining the highest value 4.6 ± 0.8 × 10 − 6  U μg − 1 . Generation of superoxide anion showed a progressive increase after spawning in an evident relationship with growth, reaching the highest value of 7.0 ± 0.4 × 10 − 6  U μg − 1 in PL-7. To our knowledge, this is the first study that characterizes immunological parameters through the first stages of ontogeny of L. vannamei under farming conditions.

Bossier Peter - One of the best experts on this subject based on the ideXlab platform.

  • Determination of poly‐β‐hydroxybutyrate assimilation by Postlarval whiteleg shrimp, Litopenaeus vannamei using stable 13C isotope tracing
    'Wiley', 2020
    Co-Authors: Ludevese‐pascual Gladys, Laranja, Joseph Leopoldo, Amar Edgar, Bossier Peter, Ahmed Farhana, De Troch Marleen, Bodé Samuel, Boeckx Pascal, De Schryver Peter
    Abstract:

    A preliminary study was conducted to demonstrate fate of the bacterial storage compound poly-beta-hydroxybutyrate (PHB) once ingested and degraded in vivo in crustaceans. The 2% supplementation of C-13-labeled Ralstonia eutropha DSM545 containing 75% PHB on dry weight in Postlarval whiteleg shrimp, Litopenaeus vannamei resulted in consistent enrichment of two fatty acids (containing 14-24 carbons [C] in length) pentadecanoic acid (15:0) and palmitic acid (16:0) in all lipid fractions. This could indicate that C-13 signal may not only originate from the PHB but partly from the structural components of the bacterial cell. There was a trend of lower C-13 enrichment in various lipid fractions of the Postlarvae as compared to the diet. These findings may have important implications as to potential of PHB as energy source rather than as building block. There was a rapid transfer of C-13 in the Postlarvae as seen by the significant C-13 enrichment in the tissues 4 hr after feeding with labeled bacterial cells. Overall, the assimilation of PHB in crustacean tissues is demonstrated for the first time. Our results indicate that PHB once ingested is rapidly assimilated in the tissues and could probably act as an energy source rather than as a building block

  • Determination of poly‐beta‐hydroxybutyrate assimilation by Postlarval whiteleg shrimp, Litopenaeus vannamei using stable 13C isotope tracing
    'Wiley', 2020
    Co-Authors: Ludevese-pascual Gladys, Laranja, Joseph Leopoldo, Amar Edgar, Bossier Peter, Ahmed Farhana, De Troch Marleen, Bodé Samuel, Boeckx Pascal, De Schryver Peter
    Abstract:

    A preliminary study was conducted to demonstrate fate of the bacterial storage compound poly-β-hydroxybutyrate (PHB) once ingested and degraded in vivo in crustaceans. The 2% supplementation of 13C-labeled Ralstonia eutropha DSM545 containing 75% PHB on dry weight in Postlarval whiteleg shrimp, Litopenaeus vannamei resulted in consistent enrichment of two fatty acids (containing 14–24 carbons [C] in length) pentadecanoic acid (15:0) and palmitic acid (16:0) in all lipid fractions. This could indicate that 13C signal may not only originate from the PHB but partly from the structural components of the bacterial cell. There was a trend of lower 13C enrichment in various lipid fractions of the Postlarvae as compared to the diet. These findings may have important implications as to potential of PHB as energy source rather than as building block. There was a rapid transfer of 13C in the Postlarvae as seen by the significant 13C enrichment in the tissues 4 hr after feeding with labeled bacterial cells. Overall, the assimilation of PHB in crustacean tissues is demonstrated for the first time. Our results indicate that PHB once ingested is rapidly assimilated in the tissues and could probably act as an energy source rather than as a building block

  • Artificial substratum consisting of poly-β-hydroxybutyrate-based biodegradable plastic improved the survival and overall performance of Postlarval tiger shrimp Penaeus monodon
    'Wiley', 2019
    Co-Authors: Ludevese-pascual Gladys, Laranja, Joseph Leopoldo, Amar Edgar, Bossier Peter, De Schryver Peter
    Abstract:

    The use of artificial substratum consisting of poly‐β‐hydroxybutyrate (PHB)‐based biodegradable plastic for penaeid shrimp culture was investigated in the present study. The survival of Postlarval tiger shrimp Penaeus monodon (30 ± 5 mg) provided with PHB substratum made out of PHB type DP9002 (Metabolix GmbH, Köln, Germany) was 88.7 ± 3.4% and this was significantly higher as compared to Postlarvae provided conventional substratum consisting of polyvinylchloride (PVC) pipes (67.3 ± 6.5%). However, no significant weight improvement was observed for the Postlarval tiger shrimp indicating that PHB could not be used as growth promoter. Nevertheless, a trend of improved robustness against adverse environmental conditions (lethal ammonium chloride concentration) and increased resistance to pathogenic Vibrio was observed in Postlarval tiger shrimp provided with PHB substratum as compared to Postlarvae provided with PVC substratum. Results indicate higher preference by Postlarvae on PHB substratum over PVC substratum. Overall, this study indicates the potential of artificial substratum consisting of PHB‐based biodegradable plastic as replacement for conventional substratum consisting of PVC pipes in enhancing the survival of Postlarval tiger shrimp and improving its performance against adverse environmental conditions and disease resistance.This study was funded by the Flemish Interuniversity Council (VLIR)

  • Artificial substratum consisting of poly-β-hydroxybutyrate-based biodegradable plastic improved the survival and overall performance of Postlarval tiger shrimp Penaeus monodon
    'Wiley', 2019
    Co-Authors: Ludevese-pascual Gladys, Laranja, Joseph Leopoldo, Amar Edgar, Bossier Peter, De Schryver Peter
    Abstract:

    The use of artificial substratum consisting of poly-beta-hydroxybutyrate (PHB)-based biodegradable plastic for penaeid shrimp culture was investigated in the present study. The survival of Postlarval tiger shrimp Penaeus monodon (30 +/- 5 mg) provided with PHB substratum made out of PHB type DP9002 (Metabolix GmbH, Koln, Germany) was 88.7 +/- 3.4% and this was significantly higher as compared to Postlarvae provided conventional substratum consisting of polyvinylchloride (PVC) pipes (67.3 +/- 6.5%). However, no significant weight improvement was observed for the Postlarval tiger shrimp indicating that PHB could not be used as growth promoter. Nevertheless, a trend of improved robustness against adverse environmental conditions (lethal ammonium chloride concentration) and increased resistance to pathogenic Vibrio was observed in Postlarval tiger shrimp provided with PHB substratum as compared to Postlarvae provided with PVC substratum. Results indicate higher preference by Postlarvae on PHB substratum over PVC substratum. Overall, this study indicates the potential of artificial substratum consisting of PHB-based biodegradable plastic as replacement for conventional substratum consisting of PVC pipes in enhancing the survival of Postlarval tiger shrimp and improving its performance against adverse environmental conditions and disease resistance

  • Poly-beta-hydroxybutyrate-enriched Artemia sp. for giant tiger prawn Penaeus monodon larviculture
    'Wiley', 2017
    Co-Authors: Ludevese-pascual Gladys, Bossier Peter, Laranja, Joseph Leopoldo Q., Amar, Edgar C., Sorgeloos Patrick, De Schryver Peter
    Abstract:

    The beneficial effects of PHB as supplement for giant tiger prawn Penaeus monodon Postlarvae using a short-term enrichment strategy via Artemia were examined. The effects of co-supplementing with a lipid emulsion were also evaluated to determine whether it yielded an additional benefit. Results on the average weight and larval development were not significantly different among Postlarvae fed the different dietary treatments, indicating that PHB supplementation could not be used to stimulate growth in P. monodon Postlarvae while such positive results have been reported in other aquaculture species. Nonetheless, significantly higher survival was obtained in Postlarvae fed PHB-enriched Artemia irrespective of lipid enrichment. In addition, PHB increased the survival of the Postlarvae after exposure to a lethal dose of ammonia. Lipid supplementation nullified this effect. The cumulative mortality of Postlarvae subjected to a sublethal concentration of ammonia for 24 h and subsequent exposure to pathogenic Vibrio campbelli showed that PHB but not lipids could effectively enhance the resistance of the Postlarvae. Co-supplementing lipids even significantly decreased this outcome. Our study indicates that PHB supplementation increases the quality of larval P. monodon and their chance of surviving under adverse environmental conditions. The short-term co-supplementation with lipid emulsion did not add to these effects