Seasonal variations in biochemical constituents during the reproductive cycle of the female dog cockle Glycymeris glycymeris

Galap, Camille; Leboulenger, F.; Grillot, J.-P.

doi:10.1007/s002270050205

Cited by 56 publications

(33 citation statements)

References 2 publications

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“…Similar trends in the lipid content throughout the reproductive cycle, revealing a 'lipid-oriented' metabolism, have also been reported for other molluscan species, such as Eurhomalea exalbida (Lomovasky et al 2004), Haliotis rubra (Litaay & De Silva 2003), Morula granulata (Uma Devi et al 1985) and Turbo sarmaticus (McLachlan & Lombard 1980). Furthermore, the high protein content in the gonads of H. trunculus may constitute an alternative energetic reserve during gametogenesis, as reported in some bivalve species (Beninger & Lucas 1984, Galap et al 1997. For instance, gonadal protein could be accumulated as vitellin associated with lipids as in Crassostrea gigas (Li et al 2000), and might be used to synthesize lipids or carbohydrates as in T. sarmaticus (McLachlan & Lombard 1980).…”

Section: Discussionsupporting

confidence: 70%

Reproductive cycle and biochemical composition of Hexaplex trunculus (Gastropoda: Muricidae) from Bizerte lagoon, northern Tunisia

Gharsallah¹,

Vasconcelos²,

Zamouri-Langar³

et al. 2010

Aquat. Biol.

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This study investigates the reproductive cycle, size at first sexual maturity and biochemical composition of Hexaplex trunculus from the Bizerte lagoon (northern Tunisia). Overall, females predominated over males, resulting in an unbalanced sex ratio of 1.2:1. Males dominated in the smaller size classes (< 40 mm shell length, SL), sex ratios were balanced at the 40 to 50 mm SL range, and females dominated in the larger size classes (> 50 mm SL). The gonad developmental stages and the gonadosomatic index (GSI) indicated that H. trunculus apparently has an annual reproductive cycle with extended periods of gonadal activity. In both sexes, examination of the appearance of the gonads showed that gamete release occurred mainly from March to May (with an apparent spawning between March and April), followed by a period of empty gonads between June and August. Sexual maturity occurred at smaller sizes in males (SL 50 = 41.02 mm SL) than in females (SL 50 = 50.47 mm SL). The contents of protein, lipids and carbohydrates were invariably greater in the gonads than in the foot, confirming the key role of the reproductive tissues in energetic storage. The monthly variation in protein, lipids and carbohydrates in the gonads followed the oscillation in the relative proportion of developed gonads and in the GSI, reflecting energetic mobilisation during maturation and spawning. Overall, the data gathered in this study constitutes valuable baseline information for making preliminary recommendations to the fishing community targeting H. trunculus in the Bizerte lagoon. Further studies and more solid data on the reproductive cycle of the species are required before definitive management measures for this locally important artisanal fishery can be proposed. KEY WORDS: Reproductive cycle · Spawning season · Size at sexual maturity · Biochemical composition · Fisheries management · Hexaplex trunculus · Muricidae · Bizerte lagoon Resale or republication not permitted without written consent of the publisherAquat Biol 10: 155-166, 2010 156 the Atlantic is mainly restricted to the coasts of Portugal and Morocco, and the Madeira and Canary archipelagos (Poppe & Goto 1991, Houart 2001). This species is harvested for human consumption and has commercial value in several Mediterranean countries such as Spain, Italy, Croatia, Cyprus and Turkey (Fischer et al. 1987), as well as along the Atlantic coasts of Spain (mainly in Andalusia) (Anon 2001) and Portugal (mainly in Algarve) (Vasconcelos et al. 2008a). In the Bizerte lagoon (northern Tunisia), the banded murex is the target species of an artisanal fishery using baited traps, but is also a bycatch species in fishing nets (Gharsallah et al. 2004). The banded murex constitutes a locally important fishing resource in the Bizerte lagoon, with estimated monthly catches of ~1.8 tons between 1999 (I. H. Gharsallah unpubl. data), but the fishery lacks specific regulations (e.g. minimum landing size, closed seasons in fishing activity).While some studies on the reproductive biology an...

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Section: Discussionsupporting

confidence: 70%

Reproductive cycle and biochemical composition of Hexaplex trunculus (Gastropoda: Muricidae) from Bizerte lagoon, northern Tunisia

Gharsallah¹,

Vasconcelos²,

Zamouri-Langar³

et al. 2010

Aquat. Biol.

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“…Therefore, protein maxima prior to spawning (June) may support this hypothesis. The decrease in protein level after spawning (from July to September) was similar to many other marine bivalves, such as Mytilus galloprovincialis (Bressan & Marin, 1985) and Venerupis philippinarum (Marin et al, 2003) from the Lagoon of Venice, Crassostrea gigas from the Atlantic French coast (Berthelin et al, 2000), and Glycymeris glycymeris from the coast of southern France (Galap et al, 1997). Protein also provides an energy and material source for gametogenesis after carbohydrate and lipid reserves are depleted (Yan et al, 2010).…”

Section: Discussionsupporting

confidence: 63%

“…The accumulation and mobilization of energy reserves, according to the stage of the reproductive cycle, is reported in different marine bivalve species (Beninger & Lucas, 1984;Robert et al, 1993;Galap et al, 1997;Berthelin et al, 2000;Dridi et al, 2007). Protein and lip- id level in A. noae reached the maximum value in June, just before spawning, following the decrease in macromolecule content.…”

Section: Discussionmentioning

confidence: 99%

“…In bivalves, glycogen is the most prominent carbohydrate stored in large quantities during their growing season and used over the rest of the year (Beukema, 1997). Protein is the most abundant biochemical component in tissues and it may be an alternative energy reserve in some bivalve species during gametogenesis (Beninger & Lucas, 1984;Galap et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

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Biochemical and fatty acid composition of Arca noae (Bivalvia: Arcidae) from the Mali Ston Bay, Adriatic Sea

et al. 2014

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Biochemical and fatty acid composition of the bivalve Arca noae were investigated in the Mali Ston Bay in relation to environmental conditions. Sampling was carried out monthly, from December 2001 to November 2002. Wet shellfish meat consists on average of 77.61% water and 22.39% dry matter, while dry shellfish meat consists on average of 89.04% organic and 10.96% inorganic matter. PCA analysis identified temperature, nitrate, silicate, MICRO, Chl a and salinity as the most important environmental factors influencing biochemical composition of A. noae. An increase of dry weight content of A. noae was observed during the spring when both the sea temperature and food supply increased rapidly. Contents of protein (54.39-62.06% of dry weight), carbohydrate (4.13-8.07% of dry weight) and lipid (3.46-8.58% of dry weight) varied significantly during the year. Protein and lipid level reached the maximum value in June. The fatty acid profiles of total lipids extracted from A. noae showed high level of unsaturation (UNS/SAT 1.9-3.4). Total polyunsaturated fatty acids (PUFA) represented the majority of total fatty acids (40.3-59.9% of total fatty acids) and the most abundant were eicosapentaenoic (20:5n-3) and docosahexaenoic (22:6n-3) acid. n-3/n-6 PUFA ratio value varied between 2.1 and 5.0 and was the highest during the spring (April to June). Due to their low lipid and high percentages of healthy polyunsaturated fatty acids A. noae can be evaluated as a quality seafood product. The most suitable period of the year for its consumption is in the spring when it reaches its highest nutritional values.

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“…Maternally derived lipids are used for the formation of membranes and are a major source of energy for embryogenesis and early larval development of various molluscs (Caers et al, 1999;Soudant et al, 1999). Fluctuations of lipid content coincide with the reproductive cycle, and such trends have been also reported for other molluscs such as dog cockle Glycymeris glycymeris (Galap et al, 1997(Galap et al, , 1999) and the osyter Crassostrea virginia (Chu et al, 1990;Berthelin et al, 2000).…”

Section: Proximate Compositionmentioning

confidence: 79%

Spawning season, fecundity and proximate composition of the gonads of wild-caught blacklip abalone (Haliotis rubra) from Port Fairy waters, south eastern Australia

Litaay¹

2003

Aquatic Living Resources

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Seasonal variations in biochemical constituents during the reproductive cycle of the female dog cockle Glycymeris glycymeris

Cited by 56 publications

References 2 publications

Reproductive cycle and biochemical composition of Hexaplex trunculus (Gastropoda: Muricidae) from Bizerte lagoon, northern Tunisia

Reproductive cycle and biochemical composition of Hexaplex trunculus (Gastropoda: Muricidae) from Bizerte lagoon, northern Tunisia

Biochemical and fatty acid composition of Arca noae (Bivalvia: Arcidae) from the Mali Ston Bay, Adriatic Sea

Spawning season, fecundity and proximate composition of the gonads of wild-caught blacklip abalone (Haliotis rubra) from Port Fairy waters, south eastern Australia

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