Review of the reproductive physiology of the scallop,<i>Pecten maximus</i>, applicable to intensive aquaculture

Devauchelle, Nicole; Mingant, Christian

doi:10.1051/alr:1991004

Cited by 77 publications

(39 citation statements)

References 4 publications

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“…However, in normal conditions, C. gigas eggs contain sufficient reserves (particularly essential PUFA) to ensure survival throughout embryogenesis, although not for subsequent larval growth (Utting & Millican 1997). Devauchelle and Mingant (1991) reported that the fecundity of the hermaphroditic scallop P. maximus at similar gametogenic stages decreased with feeding levels. Gonad activity suffered first at lower feeding levels, but only in the female part of the gonad.…”

Section: Feeding Broodstockmentioning

confidence: 99%

Uses of Microalgae in Aquaculture

Muller‐Feuga¹,

Robert²,

Cahu³

et al. 2003

Live Feeds in Marine Aquaculture

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Section: Feeding Broodstockmentioning

confidence: 99%

Uses of Microalgae in Aquaculture

Muller‐Feuga¹,

Robert²,

Cahu³

et al. 2003

Live Feeds in Marine Aquaculture

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“…Nevertheless, artificial reproduction of great scallop is poorly controlled in hatcheries: highly variable results were recorded after thermal shocks ). Furthermore, information on sperm biology remains limited (Devauchelle and Mingant 1991;Andersen et al 2011). In this species, spermatozoa released through the ducts, after intragonadal serotonin injection or thermal shock, can be activated when diluted in seawater, and simultaneously a high respiration rate is initiated.…”

Section: Introductionmentioning

confidence: 99%

Effect of sampling location, release technique and time after activation on the movement characteristics of scallop (Pecten maximus) sperm

Suquet

Quéré

Mingant

et al. 2013

Aquat. Living Resour.

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-Sperm characteristics of scallops have not been well described in the scientific literature. The effects of sperm release technique (thermal shock versus serotonin injection), of sperm collection technique (testis sampling versus serotonin injection), of sperm sampling location along the genital tract, of in vitro sperm maturation, and of time post activation on scallop sperm characteristics were assessed in the present work. Whatever sperm release technique used, no significant differences were observed regarding the percentage of motile spermatozoa and the velocity of the average path (VAP). Compared to testicular sperm, a higher percentage of motile spermatozoa, VAP and intracellular adenosine triphosphate (ATP) content were observed for sperm shed after serotonin injection. From the distal part of testes up to the gonopore, an increase of the percentage of motile spermatozoa and VAP was assessed, suggesting a sperm 'maturation process' along the genital ducts. A higher increase in the percentage of motile sperm was recorded during a 5 min incubation of testicular sperm in seawater containing 2 mM serotonin and seawater containing 10 mM caffein compared to seawater (control). In addition, a higher VAP was assessed, incubating testicular sperm in caffein, compared to control or serotonin. Then, the percentage of motile spermatozoa, VAP and intracellular ATP content exhibited a progressive reduction during the 10 h swimming period. Mean values of the percentage of motile spermatozoa, VAP, sperm track linearity (LIN) and intracellular ATP content recorded at the beginning of the movement period for sperm samples collected after intragonadal serotonin injection, were 82 ± 7%, 162 ± 15 µm s −1 , 0.33 ± 0.12 and 212 ± 133 nmol ×10 −9 spermatozoa (n = 9 males), respectively. The present study confirms the existence of a sperm "maturation process" along scallop genital ducts. In addition, the cessation of scallop sperm movement can be explained by the exhaustion of ATP content at the end of the movement phase.

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“…Currently, induced spawning of several mollusks species has been achieved during culture through manipulation of certain variables such as photoperiod, temperature, and diet (Uki and Kikuchi 1984;Devauchelle and Mingant 1991). It is important to study oocytes quality in terms of these variables in order to understand the conditions in which more resistant larvae could be obtained.…”

Section: Discussionmentioning

confidence: 99%

Vitellogenesis and changes in lipid and protein content of oocytes of Trophon geversianus (Neogastropoda: Muricidae) in Golfo San José (Chubut, Argentina)

et al. 2014

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The reproductive cycle of Trophon geversianus (Pallas 1774) population from Golfo San José (Chubut, Argentina, 42°33 0 S, 64°33 0 W) was studied using histochemical methods and digital image analysis. For such purpose, ovary samples were taken monthly between July 2006 and August 2007 and stained with hematoxylin and eosin, Sudan black B (to identify lipids) or Schiff's ninhydrin (to identify proteins). Four different gametogenic stages were described: oogonias, previtellogenic oocytes, early vitellogenic oocytes, and late vitellogenic oocytes. Two spawning events were registered; one between September and October 2006, and a second one between February and March 2007. Oocyte quality was determined by the changes in lipid and protein composition during gametogenesis. Through digital image analysis, a lipid and a protein indexes (LI and PI) were calculated. Significant differences were observed in LI over month sampled, contrarily to what PI showed. A significant and positive correlation was found between lipid and protein content and oocytes areas, indicating that these nutrients accumulate during the entire vitellogenesis. Also, when dividing the oocytes into two size groups, analysis indicates a positive correlation between LI and oocyte area for smaller area oocytes. This demonstrates that while proteins accumulate linearly throughout vitellogenesis process, lipids accumulate in two steps: first at a growing rate, secondly at constant rate. This information is essential to determine the nutritional requirements of brood stock individuals at hatcheries in this potential fishery resource that inhabits patagonian waters.

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Review of the reproductive physiology of the scallop,Pecten maximus, applicable to intensive aquaculture

Cited by 77 publications

References 4 publications

Uses of Microalgae in Aquaculture

Uses of Microalgae in Aquaculture

Effect of sampling location, release technique and time after activation on the movement characteristics of scallop (Pecten maximus) sperm

Vitellogenesis and changes in lipid and protein content of oocytes of Trophon geversianus (Neogastropoda: Muricidae) in Golfo San José (Chubut, Argentina)

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