The Chilean scallop Argopecten purpuratus (Lamarck, 1819): I. fatty acid composition and lipid content of six organs

Caers, Marrit; Coutteau, Peter; Curé, Karen; Morales, Veronica; Gajardo, Gonzalo; Sorgeloos, Patrick

doi:10.1016/s0305-0491(99)00046-2

Cited by 47 publications

(31 citation statements)

References 17 publications

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“…In gonad, this ratio was significantly higher in C. varia (7.72) than in P. jacobaeus (5.33) and F. glaber (4.76); (p < 0.05). Dridi, Romdhane, and Elcafsi (2007) recorded lowest value of the gonad x3/x6 ratio (3.17) in the oyster C. gigas; however, in the scallop, Argopecten purpuratus, Caers et al (1999) recorded highest values of this ratio for adductor muscle (12.1), and male and female gonads (11.3 and 11.9, respectively). In edible meat of the clam Chamelea gallina, this ratio varies between 4.28 and 10.8 (Orban et al, 2006).…”

Section: Resultsmentioning

confidence: 87%

Comparative fatty acid profiles in edible parts of wild scallops from the Tunisian coast

et al. 2010

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Section: Resultsmentioning

confidence: 87%

Comparative fatty acid profiles in edible parts of wild scallops from the Tunisian coast

et al. 2010

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“…For example, it has been described that the female gonads of the molluscs Patella depressa (Pennant, 1777), Argopecten purpuratus (Lamarck, 1819), Haliotis rubra (Leach, 1814) and Haliotis laevigata (Donovan 1808) have higher levels of 14:0, 16:1n-7, 18:1n-9, 18:2n-6 and 18:3n-3 than the male gonads (Caers et al 1999;Grubert et al 2004;Morais et al 2003). The level of 20:4n-6 is usually similar in males and females but the content of 20:5n-3 diVers among species and, for example, is higher in the testes of P. depressa and H. rubra but lower in those of A. purpuratus (Caers et al, 1999;Grubert et al 2004;Morais et al 2003). In several species of Caprellidea, we have also reported higher percentages of 16:1n-7 and lower levels of 18:0, 20:4n-6 and 20:5n-3 in females than in males (Guerra-García et al 2004).…”

Section: Discussionmentioning

confidence: 99%

Males and females gonad fatty acids of the sea urchins Paracentrotus lividus and Arbacia lixula (Echinodermata)

2009

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The aim of this study was to analyze male and female gonad fatty acids of two sea urchin species, Paracentrotus lividus and Arbacia lixula, from the south coast of Spain. Additionally, we investigated possible diVerences between two locations. The ovaries of both species showed higher percentages of 14:0, 16:0, 16:1n-7, 18:2n-6, 18:3n-3 and 18:4n-3 than testes and lower levels of 18:0, 22:1n-9, 20:4n-6 and 22:5n-3. In P. lividus but not in A. lixula, the level of 20:5n-3 was higher in testes than in ovaries. These diVerences between sexes probably indicate diVerent requirements of males and females during gametogenesis although the presence of a large number of gametes in the mature gonad may also have inXuences on fatty acid composition. SigniWcant diVerences in gonad fatty acid proWles where also found when individuals of P. lividus collected at a location of the Mediterranean region were compared with specimens collected at the Atlantic coast. The most remarkable changes were the lower levels of 14:0, 18:1n-7, 20:1n-9, 20:4n-6 and 22:4n-6 and the higher values of 20:1n-11, 20:5n-3 and 22:6n-3 found in males and females of the Mediterranean specimens compared to those of the Atlantic coast. These diVerences probably reXect the diVerences in potential food sources at each location.

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“…Furthermore, when carbohydrate reserves are low, lipids are synthesized and stored for subsequent distribution to other tissues (Vassallo 1973;Thompson et al 1974). Similarities between the fatty acid composition of the triacylglyceride fraction (TAG) of the gonad and the digestive gland in the scallop Argopecten purpuratus demonstrate the transfer of lipids from the lipidrich digestive gland to the gonad for gametogenesis (Caers et al 1999). However, the digestive gland also plays a major role in the storage of lipids originating from phytoplankton (Soudant et al 1999).…”

Section: Discussionmentioning

confidence: 99%

The effect of the sinking spring diatom bloom on digestive processes of the cold‐water protobranch Yoldia hyperborea

Stead

Thompson

2003

Limnology & Oceanography

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Periodic sampling from April 1997 to December 1998 of a population of the deposit-feeding protobranch Yoldia hyperborea from the deep depositional zone (250 m) of Conception Bay, Newfoundland, indicated that this species was exposed to subzero temperatures (Ϫ0.63ЊC) throughout the year. However, the standing stock of phytoplankton in the photic zone showed strong seasonal fluctuations with primary peaks always occurring in April (4.26 and 5.09 g L Ϫ1 chlorophyll a in 1997 and 1998, respectively). In addition, sediment chlorophyll a started to increase (from a low of ϳ6 ng mg Ϫ1 dry weight of sediment) as the sinking of a smaller, secondary bloom, reached the bottom in the first 2 months of 1997 and 1998, although higher concentrations were reached by mid-April and May 1997 (21.32 ng mg Ϫ1 sediment) and remained relatively high until February 1998. An increase of digestive cell height and protein content occurred as soon as sinking organic material from the spring bloom reached the benthic zone, suggesting storage of metabolic energy during spring and summer. Sharp increases in digestive enzyme activity occurred primarily in early spring of each year, coinciding with the timing of the primary spring bloom fallout, suggesting activation of the formerly depressed digestive system after a prolonged period of low food availability (i.e., late summer to autumn). Results suggest that Y. hyperborea strongly depends on the input of fresh algal material despite the high availability of organic matter in the sediment.Carbon supply to the aphotic benthic zone of the sea is largely based on the timing of climatic events (e.g., snow and ice melt, rainfall), tidal exchange, and, most importantly, the sinking of phytoplankton blooms (Wassman 1991;Graf 1992). The organic fraction of the particle input to the sediment is a potential energy source for benthic organisms. It is well established that in shallow water the input of fresh organic matter of high nutritional value from primary production creates a burst of activity in the benthic population (Clarke 1988;Boon et al. 1998). Graf et al. (1982) showed that the response to organic matter input is more rapid in those species that utilize the organic matter directly rather than those species that feed on meiofauna and sediment. However, the availability of food particles decreases with increasing depth and becomes more episodic at higher latitudes, imposing specific constraints on the organisms, which must be able to withstand periods of reduced food availability. Thus energy-demanding metabolic processes such as growth and reproduction are often restricted to periods of high food abundance. For example, antarctic suspension feeders show a marked seasonal variation in feeding rates, with the highest activity occurring in the short but very productive summer, whereas most animals cease feeding during

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The Chilean scallop Argopecten purpuratus (Lamarck, 1819): I. fatty acid composition and lipid content of six organs

Cited by 47 publications

References 17 publications

Comparative fatty acid profiles in edible parts of wild scallops from the Tunisian coast

Comparative fatty acid profiles in edible parts of wild scallops from the Tunisian coast

Males and females gonad fatty acids of the sea urchins Paracentrotus lividus and Arbacia lixula (Echinodermata)

The effect of the sinking spring diatom bloom on digestive processes of the cold‐water protobranch Yoldia hyperborea

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