Comparative effects of inducers on metamorphosis of the Japanese oyster<i>Crassostrea gigas</i>and the great scallop<i>Pecten maximus</i>

Nicolas, Laurence; Robert, R.; Chevolot, Lionel

doi:10.1080/08927019809378354

Cited by 21 publications

(17 citation statements)

References 9 publications

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“…Venerupis pullastra García-Lavandeira et al, 2005García-Lavandeira et al, 2005 Nicolas et al, 1998Teh et al, 2012Cooper, 1982Dobretsov and Qian, 2003Mesías-Gansbiller et al, 2013Kingzett et al, 1990 Potassium Argopecten purpuratus…”

Section: Ruditapes Philippinarummentioning

confidence: 99%

“…Epinephrine 1 -10 X X Chevolot et al, 1991;Nicolas et al, 1996;Nicolas et al, 1998 Homogentisic acid 1 X Chevolot et al, 1991 Jacaranone 0.5 X Chevolot et al, 1991 L-DOPA 1 -5 X Chevolot et al, 1991;Nicolas et al, 1998 A C C E P T E D M A N U S C R I P T 8 equivalent to 30 cells μl -1 day -1 , consisting of Pavlova lutheri (PLY75), Isochrysis sp. (clone T-ISO) (PLY506A) and Chaetoceros calcitrans (PLY537) at a ratio of 1:1:1.…”

Section: Referencesmentioning

confidence: 99%

“…Difficulties in the culture of bivalves have often been associated with settlement and metamorphosis, the period during which mature larvae undertake exploratory behaviour as they search for a suitable substratum, before undergoing permanent morphological changes allowing them to adapt to their new benthic habitat (Bayne, 1965;Pawlik, 1990;Lutz and Kennish, 1992;Gosling, 2003). In the hatchery environment, P. maximus exhibits a protracted development over several weeks, leading to a lack of synchronous development and variable levels of survival within larval batches (Nicolas et al, 1998;Robert and Nicholas, 2000). In the natural environment, settlement and metamorphosis of marine invertebrates is controlled by a range of interrelated biotic and abiotic factors operating over different temporal and spatial scales (Jackson, 1986;Pawlik, 1990;Pawlik, 1992;Rodríguez et al, 1993).…”

Section: Introductionmentioning

confidence: 99%

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Influence of exogenous chemicals on larval development and survival of the king scallop Pecten maximus (L.)

et al. 2017

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Section: Ruditapes Philippinarummentioning

confidence: 99%

Section: Referencesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of exogenous chemicals on larval development and survival of the king scallop Pecten maximus (L.)

et al. 2017

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“…For example, variations of catecholamine contents have been correlated with spawning in bivalves (Osada et al, 1987;Paulet et al, 1993). On the other hand, larval settlement has been induced with such neurotransmitters, analogues or precursors in oysters (Coon and Bonar, 1985;Shpigel et al, 1989;Bonar et al, 1990;Beiras and Widdows 1996) and scallop (Yvin et al, 1985;Chevolot et al, 1991;Nicolas et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

Ontogenic changes in the contents of dopamine, norepinephrine and serotonin in larvae and postlarvae of the bivalve Pecten maximus

Cann-Moisan

Nicolas

Robert

2002

Aquatic Living Resources

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In the present study, norepinephrine (NE), epinephrine (E), dopamine (DA) and 5-hydroxy-tryptamine (5HT) have been quantified by high performance liquid chromatography (HPLC) in Pecten maximus during larval and post-larval development. With average values ranging from 2 to 5 pg µg -1 of protein, NE remained low through the whole larval life, while epinephrine (E) was undetected. DA and 5HT were the most abundant monoamines with significant variations between larval, pre-metamorphic and post-larval stages. During the first 20 days, corresponding to D larval and umboned larval stages, levels of DA and 5HT increased from 15 to 30 and 10 to 15 pg µg -1 of protein, respectively. Then during the last week of larval life, at the approach of metamorphosis, DA rose sharply from 30 to 50 pg µg -1 of protein and 5HT from 15 to 50 pg µg -1 of protein. Lastly during the first week of post-larval life (day 27 to day 34) DA and 5HT contents declined to levels similar to those detected in the first days of larval life reaching progressively 1 pg µg -1 of protein during the second week of post-larval life (day 34 to day 55). These rapid and transient variations in monoamine contents (5HT and DA) around metamorphosis, present a great interest. However, this relation between neurochemical changes and metamorphosis must be confirmed with future studies in order to verify if such monoamines might be used as indicators of larval competence in P. maximus, a commercially important species. Résumé Évolution ontogénique des teneurs en dopamine, adrénaline et sérotonine chez les larves et post-larves du bivalve Pecten maximus.L'évolution des teneurs en noradrénaline, adrénaline, dopamine et sérotonine a été étudiée en phase larvaire et post-larvaire chez la coquille St-Jacques Pecten maximus. Avec des valeurs moyennes (déterminées par HPLC) comprises entre 2 et 5 pg µg -1 de protéine, la noradrénaline fluctue peu tandis que l'adrénaline n'a pu être détectée quel que soit le stade considéré, larvaire ou post-larvaire. La dopamine et la sérotonine étaient particulièrement abondantes et présentaient des variations significatives entre les phases larvaire, pré-métamorphique et post-larvaire. Au cours des 20 premiers jours, correspondant aux stades larves D puis umbonées, les teneurs en dopamine et sérotonine augmentent progressivement de 15 à 30 pg µg -1 et de 10 à 15 pg µg -1 respectivement. Puis, au cours de la dernière semaine de vie larvaire, à l'approche de la métamorphose, la teneur en dopamine augmente brusquement de 30 à 50 pg µg -1 et celle de la sérotonine de 15 à 50 pg µg -1 . Enfin, durant la métamorphose et la première semaine de vie post-larvaire (jours 27 à 34) les concentrations en dopamine et sérotonine chutent jusqu'à des valeurs similaires à celles détectées en début de vie larvaire et atteignent, au cours de la deuxième semaine (jours 34 à 55), des valeurs proches de 1 pg µg -1 . Ces brusques variations des contenus en dopamine et sérotonine autour de la métamorphose présentent un réel intérêt. Cependant, cette relation ent...

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“…Competent bivalve larvae respond to different settlement cues to undergo metamorphosis and without adequate cues, larvae delay their metamorphosis (Pechenik, 1990;Martel et al, 2014;Lagarde et al, 2018). In scallops, some chemical cues have been demonstrated to increase settlement (Yvin et al, 1985;Chevolot et al, 1991;Mesías-Gansbiller et al, 2008;Galley et al, 2017), but generally https://doi.org/10.1016/j.aquaculture.2019.734650 Received 7 May 2019; Received in revised form 11 September 2019; Accepted 28 October 2019 scallops are less sensitive to chemical inducers than oysters (Nicolas et al, 1998). Settlement may also depend on physical factors such as turbulence and seawater flow, as demonstrated with mussels in high turbulence conditions (Pernet et al, 2003c).…”

Section: Introductionmentioning

confidence: 99%

Improving scallop (Pecten maximus and Placopecten magellanicus) spat production by initial larvae size and hydrodynamic cues used in nursery system

et al. 2020

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A B S T R A C TThere are several factors affecting scallops during the metamorphosis process that could explain the relatively low post-larvae yield observed in hatcheries. Competent bivalve larvae respond to different settlement cues to undergo metamorphosis and without adequate cues, larvae delay their metamorphosis. The objective of this study is to improve the settlement ratio of the two scallop species, Placopecten magellanicus and Pecten maximus by physical cues associated with hydrodynamic conditions, stocking density in settlement units and larval size at time of transfer to settling units. For each treatment, physiological condition was determined by fatty acid analysis to determine the energetic reserves and structural lipids. We observed similar results for the two important commercial pectinid species and validate the hypothesis on the positive effect of increased flow rate and larval size after transfer to settlement systems on settlement success. Increasing flow rate also affects positively the physiological condition of settled post-larvae by a higher accumulation of total fatty acids in neutral lipid fractions. Furthermore, no effect of larval stocking density until 90 larvae cm −2 in the downwelling sieves was observed. To our knowledge this study is the first to characterize the effect of seawater flow rate on settlement success of different pectinid species cultured under similar conditions. The experiments were performed in a close to commercial scale and thus are relevant to industry situations.

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Comparative effects of inducers on metamorphosis of the Japanese oysterCrassostrea gigasand the great scallopPecten maximus

Cited by 21 publications

References 9 publications

Influence of exogenous chemicals on larval development and survival of the king scallop Pecten maximus (L.)

Influence of exogenous chemicals on larval development and survival of the king scallop Pecten maximus (L.)

Ontogenic changes in the contents of dopamine, norepinephrine and serotonin in larvae and postlarvae of the bivalve Pecten maximus

Improving scallop (Pecten maximus and Placopecten magellanicus) spat production by initial larvae size and hydrodynamic cues used in nursery system

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