Storage metabolism in the Pacific oyster (Crassostrea gigas) in relation to summer mortalities and reproductive cycle (West Coast of France)

Berthelin, Clothilde Heude; Kellner, K; Mathieu, Michel

doi:10.1016/s0305-0491(99)00187-x

Cited by 299 publications

(205 citation statements)

References 21 publications

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“…Among all the tissues analysed, the highest value of protein was observed in the foot muscle of H. varia, as noted in most bivalves and gastropods, and it is a little higher than that of the other abalone species reported (Litaay & De Silva 2003). Previous studies have reported that much of the energy resources of molluscs are stored in the foot muscle (Pazos et al 1997;Berthelin et al 2000) and the digestive gland (Sastry & Blake 1971;Berthelin et al 2000). Furthermore, earlier studies have also shown that the digestive gland is implicated not only in nutrient storage but also in the transfer of assimilated food to body tissues in molluscs (Sastry & Blake 1971).…”

Section: Discussionmentioning

confidence: 92%

Variation in biochemical composition during gonad maturation of the tropical abaloneHaliotis variaLinnaeus 1758 (Vetigastropoda: Haliotidae)

Najmudeen

2007

Marine Biology Research

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Biochemical changes in the body components during gonad maturation of the tropical abalone Haliotis varia were investigated using wild collected specimens from the Gulf of Mannar, on the southeast coast of India. The gonadosomatic index (GSI) and the hepatosomatic index (HSI) showed negative correlations throughout the study period as well as during the progression of gonad maturation stages. The highest GSI for both the sexes were in the ripe stages followed by late maturing stages. The HSI ranged from 2.97 to 6.71 in females, and 3.55 to 5.09 in males. Among the biochemical components analysed, lipid and carbohydrate contents showed significant variations in the different tissues of H. varia during the progress of gonad maturation. The highest protein content was in the foot muscle and the lowest was in the digestive gland. Total lipids in the ovary were always higher compared with that of the testis and the values ranged from 12.60 to 26.49%, registering the highest value in the ripe ovary. Gonad carbohydrate content was lower when the lipid content was higher, suggesting the conversion of carbohydrate to lipids. The present study demonstrates the role of nutrient translocation between body parts as an essential part of the reproductive physiology of abalone.

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Section: Discussionmentioning

confidence: 92%

Variation in biochemical composition during gonad maturation of the tropical abaloneHaliotis variaLinnaeus 1758 (Vetigastropoda: Haliotidae)

Najmudeen

2007

Marine Biology Research

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“…Various authors have reported lower values of glycogen percentage in carbohydrates: 48% (DeslousPaoli and He´ral 1988), 56% (Lee et al 1975), 79.5% (Whyte and Englar 1982), and 65-100% (Maurer and Borel 1986). A pattern corresponding to alternation of storage and mobilization of energetic reserves in association with the reproductive cycle has been reported by various authors (Gabbott 1975;Bayne 1976;Berthelin et al 2000). The latter authors explained, for C. gigas cultivated on the western Atlantic coast of France, that glycogen and lipids were stored during the winter period and that gametogenesis in spring and summer was associated with an increase in lipid and protein contents taking place at the expense of glycogen reserves.…”

Section: Biological Performancesmentioning

confidence: 90%

Spatio-temporal variations in biological performances and summer mortality of the Pacific oyster Crassostrea gigas in Normandy (France)

et al. 2005

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Mortality and biological performances of halfgrown Crassostrea gigas were studied from spring 2000 to autumn 2001 at six instrumented stations located in two areas (Gefosse and Grandcamp) of the Bay of Veys (Normandy). Shell and meat growth, condition indexes and a macroscopic maturity index were determined on oysters deployed at the six stations in order to assess spatial variability in the influence of environmental conditions. In addition, histological and biochemical analyses were performed in order to determine the sex and establish the reproductive cycle (at all six sites) and the biochemical composition (at four stations). The data set including monthly mean temperatures and data provided by examination of 2,837 oysters were analysed by Principal Component Analysis and a Hierarchical Ascending Clustering which resulted in the formation of four clusters. The highest station on the shoreline belonged to a cluster characterized notably by low total weight due to a short immersion/feeding period, whereas all other stations belonged to another single cluster. Nevertheless, various biological differences were found between these stations, e.g. the reproductive cycle was generally synchronized throughout the bay but some differences relative to spawning occurrence were observed. In 2000, oyster mortality was higher at Gefosse than at Grandcamp, the latter being a more marine area.In 2001, oyster mortalities were significantly higher and all stations were strongly affected. In the Bay of Veys, oyster biological performances and mortality thus showed spatio-temporal variations which were worthy to be discussed.

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“…Relationships between food quality and quantity, energy storage, and reproduction are now well established in C. gigas (Soudant et al, 1999;Berthelin et al, 2000;Royer et al, 2008;Rico-Villa et al, 2009). These observations suggest that HAB exposure, by affecting nutrition-related functions, may impact reproduction processes and gamete output.…”

Section: Introductionmentioning

confidence: 99%

Effects of Alexandrium minutum exposure upon physiological and hematological variables of diploid and triploid oysters, Crassostrea gigas

et al. 2010

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minutum compared to control oysters. At the same time, many oysters exposed to the harmful microalgae presented a strong inflammatory response in different tissues of the digestive gland: in intestine as well as in digestive ducts and tubules. Spermatozoa in oysters exposed to A. minutum were morphologically and functionally modified compared to spermatozoa of control oysters. Indeed, spermatozoa were less motile and had lower ATP content in oysters exposed to A. minutum. Meanwhile, spermatozoa produced by control oysters showed higher 2 percentage of mortality and relative DNA content than those produced by A. minutum exposed oysters. Finally, the characteristics of the mitochondria of spermatozoa also appeared to be modified upon A. minutum exposure. The results of this study suggests that an exposure of oysters to A. minutum, reducing energy status and motility of spermatozoa associated to morphological changes at the cellular and sub-cellular levels, can have consequences on spermatozoa fertility and reproduction success.

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Storage metabolism in the Pacific oyster (Crassostrea gigas) in relation to summer mortalities and reproductive cycle (West Coast of France)

Cited by 299 publications

References 21 publications

Variation in biochemical composition during gonad maturation of the tropical abaloneHaliotis variaLinnaeus 1758 (Vetigastropoda: Haliotidae)

Variation in biochemical composition during gonad maturation of the tropical abaloneHaliotis variaLinnaeus 1758 (Vetigastropoda: Haliotidae)

Spatio-temporal variations in biological performances and summer mortality of the Pacific oyster Crassostrea gigas in Normandy (France)

Effects of Alexandrium minutum exposure upon physiological and hematological variables of diploid and triploid oysters, Crassostrea gigas

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