Tissue composition and reproduction of mytilus edulis in relation to food availability

Pieters, H.; Kluytmans, J.H.; Zandee, D.I.; Cadée, Gerhard C.

doi:10.1016/0077-7579(80)90008-3

Cited by 111 publications

(54 citation statements)

References 16 publications

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“…Mussels with higher mair~ierlarlce requixenlents should have less energy available for other energetic processes (Diehl et al 1986, Hawkins et al 1986, Koehn & Bayne 1989, Hawkins & Bayne 1992) and thus be more vulnerable to adverse conditions. This corroborates Peterson's (1980) report that susceptible stocks of mussels have higher maintenance metabolism than more resistant stocks.…”

Section: Introductionsupporting

confidence: 92%

Reproduction and summer mortality of blue mussels Mytilus edulis in the Magdalen Islands, southern Gulf of St. Lawrence

Myrand¹,

Guderley²,

Himmelman³

2000

Mar. Ecol. Prog. Ser.

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We examined the relationship of summer mortality to reproductive events for suspensioncultured mussels h/lytilus edulis L, in the Magdalen Islands. Parameters associated with gametogenesis and spawning were followed along w t h the tuning and intensity of mortality from mid-June to midSeptember 1991. For mussels maintained In a shallow lagoon (the usual mussel culture s~t e ) , summer mortality began in late July as a major spawning event was e n d~n g and as summer temperatures peaked (>20°C). Mussels from this group showed low energetic contents after spawning and during the period of highest mortality, glycogen content decreased rapidly and shell growth ceased. Thus, mussels weakened by a major spawning were at the same time submitted to stressful temperatures. Summer mortalities were observed until the end of the experimental period (mid-September) even though surviving mussels seemed to have improved their condition in late August (when glycogen content, tissue mass and shell length had increased). By mid-September approximately 65 % of the mussels had been lost. In contrast, no summer mortality was observed for mussels from the same stock that were maintained at 16 m depth in the open sea. These mussels were exposed to lower temperatures and spawned less extensively than those in the lagoon. They had no major spawning in late July and were never completely empty of gametes. Our results suggest that suspension-cultured mussels in Magdalen Islands lagoons pay a high reproductive cost in terms of survival when a major spawning is completed during a period of stressful environmental conditions, such as high water temperatures.

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Section: Introductionsupporting

confidence: 92%

Reproduction and summer mortality of blue mussels Mytilus edulis in the Magdalen Islands, southern Gulf of St. Lawrence

Myrand¹,

Guderley²,

Himmelman³

2000

Mar. Ecol. Prog. Ser.

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“…The seasonal variation in lipids, with elevated values during gametogenesis in spring (May) and a decline to a minimum in summer/autumn following spawning, was typical for the genus Mytilidae. Boreal zone mussels accumulate lipids mainly in gonads (oocytes) to form the main component of reproductive material as energy reserves for the larvae during the first life stages (Pieters et al 1980). A spring lipid build up was greater (nearly twofold) and earlier (in March) at Sop as compared with GN (by a factor of 1.6 in April), which likely resulted from the earlier increase of the food availability in the shallow zone, corresponding to temperature-stimulated spring diatom bloom as described by Chl a (Table 3; Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Since glycogen is a minor component of gametes in Mytilidae (ca. 2.5-3.2% dry weight of oocytes; Pieters et al 1980;Bayne et al 1982), carbohydrate formation in the mussels during maturation comprised primarily nonglycogen compounds. During spawning, the increased metabolic costs are covered mainly from the glycogen reserve breakdown.…”

Section: Discussionmentioning

confidence: 99%

Effect of eutrophication on the distribution and ecophysiology of the mussel Mytilus trossulus (Bivalvia) in southern Baltic Sea (the Gulf of Gdańsk)

Wołowicz

Sokołowski

Bawazir

et al. 2006

Limnology & Oceanography

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The effect of eutrophication on benthos is usually reported as negative. In the case of the Gulf of Gdańsk, eutrophication has increased the availability of food resources to filter feeders such as mussels, affecting their physiology and vertical distribution. Comparative studies of the mussel Mytilus trossulus from two depth zones (10 m and 40 m) over a seasonal cycle revealed ecophysiologic differences between deep-and shallow-water animals. For the same shell length, the shallow-water mussels were heavier (dry weight ϭ 0.004L 2.297 ) and showed a higher weight index (dry weight/volume), averaging 3.8 Ϯ 1.9 mg cm Ϫ3 , than the deep-water mussels (dry weight ϭ 0.0002L 1.726 and 2.5 Ϯ 1.1 mg cm Ϫ3 ), primarily because of a nearly twofold greater carbohydrate store. In the shallow zone, females contained more carbohydrates (on average 5.8% dry weight) than males (3.8% dry weight) because females conserve energy for reproduction. Differences in physiologic variables, and subsequently physiologic performance of the mussels, were related to different nutritional conditions in the ambient water. The deep habitat had lower Chl a, averaging 1.1 mg L Ϫ1, total particulate matter (TPM) 4.3 mg L Ϫ1 and particulate organic matter (POM) 1.1% of TPM as compared with the shallow habitat, with average Chl a 2.5 mg L Ϫ1 , TPM 4.9 mg L Ϫ1 , and POM 1.5%. The eutrophication of the Gulf of Gdańsk has led to an increase in the food availability in the water column, which allowed efficient colonization of the deep zone by the mussels; however, the dominance of males over females (ϳ3 : 1) suggests that the food sustains only spawning-related metabolic demands and is not sufficient for energy conservation in this zone. Starch gel electrophoresis of eight enzyme loci showed no statistical differences in the allele and genotype frequencies between the shallow-and deep-water mussels; thus, the differences in ecophysiologic traits between depths are due to acclimatization.

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“…During spawning season, energy requirements are met by proteins and fats to a greater extent as compared to carbohydrates (Rodriguez-Astudillo et al, 2005). This is because; gonads consist mainly of protein and fat in bivalves (Pieters et al, 1980). Protein and fat content increases during gametogenesis whereas it decreases after spawning (Wolowicz et al, 2006).…”

Section: [Page 25]mentioning

confidence: 99%

Seasonal variation in the condition index, meat yield and biochemical composition of the flat oysterOstrea edulis(Linnaeus, 1758) from the Dardanelles, Turkey

Yıldız

Berber

Acarlı

et al. 2011

Italian Journal of Animal Science

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This study was conducted in Dardanelles between October 2007 and August 2009 when condition index, meat yield, biochemical compositions and environmental parameters of seawater were investigated and the study area was found to have available conditions for cultivation. Investigation of the study area showed a positive correlation in particular among condition index, seasonal variation of temperature, protein, fat and chlorophyll-a; a negative correlation was seen between them and carbohydrate value. It was clear from the two years study that the most ideal period for oyster harvest is April and August especially when condition index was maximum followed by a winter with no oyster yield is available in terms of the related processes involving oyster cultivation.

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Tissue composition and reproduction of mytilus edulis in relation to food availability

Cited by 111 publications

References 16 publications

Reproduction and summer mortality of blue mussels Mytilus edulis in the Magdalen Islands, southern Gulf of St. Lawrence

Reproduction and summer mortality of blue mussels Mytilus edulis in the Magdalen Islands, southern Gulf of St. Lawrence

Effect of eutrophication on the distribution and ecophysiology of the mussel Mytilus trossulus (Bivalvia) in southern Baltic Sea (the Gulf of Gdańsk)

Seasonal variation in the condition index, meat yield and biochemical composition of the flat oysterOstrea edulis(Linnaeus, 1758) from the Dardanelles, Turkey

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