Reproduction of asteroids from Balsfjorden, Northern Norway: Analyses of lipids in the gonads of Ctenodiscus crispatus, Asterias lincki and Pteraster militaris

Falk‐Petersen, Inger‐Britt; Sargent, J. R.

doi:10.1007/bf00397494

Cited by 19 publications

(9 citation statements)

References 22 publications

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“…The percentage of lipid in the ovaries just prior to spawning was much lower than the value of 40 to 65% found in the ovaries of Ctenodiseus erispatus at the same time in the reproductive cycle (Falk-Petersen and Sargent 1982), but the lipid level in the testes of Sclerasterias mollis was slightly lower or similar to that in C. crispatus. In contrast to both female and male C. crispatus, which showed little variation in total lipid levels in the gonads during the reproductive cycle, a marked annual cycle in lipid levels occurred in both ovaries and testes of S. mollis.…”

Section: Discussionmentioning

confidence: 91%

“…LiPid content, however, similar to carbohydrate and protein, showed a clear annual change, suggesting that the pyloric lipid was also transferred to gonads to be used probably both as an energy supply and as structural material. This has been found in other asteroids such as Echinaster (Ferguson 1975b(Ferguson , 1976, Asterias rubens (Oudejans and van der Sluis 1979b) and Ctenodiscus crispatus (Falk-Petersen and Sargent 1982). The study of Oudejans and van der Sluis (1979b) in particular showed that triacyclglycerols are the primary constituent of the lipids in the pyloric caeca of A. rubens, and suggested that triacylglycerols are hydrolyzed and the products transported to the ovaries.…”

Section: Discussionmentioning

confidence: 91%

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Seasonal changes in biochemical composition of body walls, gonads and pyloric caeca in two populations ofSclerasterias mollis (Echinodermata: Asteroidea) during the annual reproductive cycle

Barker

1991

Mar. Biol.

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Abstract. Seasonal changes in biochemical composition of tissues are compared in a shallow inshore and deeper offshore population of the seastar Sclerasterias mollis (Hutton, 1872) on the Otago shelf, New Zealand, from 1985 to 1986. The biochemical composition of the body wall, gonads and pyloric caeca of the two populations did not differ greatly, even though reproductive output and nutrient storage of reserves were consistently higher in the offshore population. The biochemical composition of the ovaries and testes differed. High levels of carbohydrate and lipid were maintained in the ovaries from the commencement of vitellogenesis until spawning occurred. The testes had higher ash levels during spermatogenesis. During the annual reproductive cycle, an inverse relationship in the carbohydrate levels between the ovary and the pyloric caeca suggests nutrient transfer from the pyloric caeca to the gonads during gametogenesis. Annual changes in biochemical composition indicate that the body wall is also used for nutrient storage.

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Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 91%

Seasonal changes in biochemical composition of body walls, gonads and pyloric caeca in two populations ofSclerasterias mollis (Echinodermata: Asteroidea) during the annual reproductive cycle

Barker

1991

Mar. Biol.

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“…Pandalus montagui, Clarke 1979;Chorismus antarcticus, Clarke 1977a, b, 1982, Balsfjord l? borealis exhibit not only greater peak levels of lipid on a percentage-weight basis but also exhibit more marked seasonal variations between peaks and troughs.…”

Section: Compositional Characteristics Of Lipid and Feedingmentioning

confidence: 99%

“…borealis possibly indicates the presence of lipids derived from detritus, consistent with the animals' classically cited benthic feeding habit. Nevertheless, short-chain branched fatty acids associated with bottom sediments and sediment-ingesting organisms, such as the asteroid Ctenodiscus crispatus (Falk-Petersen & Sargent 1982, Sargent et al 1983, are not prevalent in the lipids of Balsfjord P borealis. Overall, the fatty acid profile of the animals' triacylglycerols is much more consistent with a carnivorous rather than an omnivorous or detritivorous habit.…”

Section: Compositional Characteristics Of Lipid and Feedingmentioning

confidence: 99%

Total lipid content, and lipid and fatty acid composition of the deep-water prawn Pandulus borealis from Balsfjord, northern Norway: growth and feeding relationships

Hopkins¹,

Sargent²,

Nilssen³

1993

Mar. Ecol. Prog. Ser.

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Variations in total lipid content (g of lipid, and as % of wet and dry body weights) of the prawn Pandalus borealis, ranging from eggs to 52 mo old adults, indicate that lipid growth exhibits marked seasonal oscillations while growth in carapace length shows only comparatively weak seasonality. Positive (anabolic) lipid growth occurs from about April to September inclusive (with up to 40 % of dry body weight as lipid), the major production season for both phytoplankton and herbivorous zooplankton. Negative (catabolic) lipid growth (with lipid being reduced to about 10 % of dry weight) is prominent during the winter. Correspondence analysis involving the relative body-content of total lipid, total protein, ash and water indicates that both 'age' and 'seasonally' related trends are visible, lipid tends to play an increasingly important rBle with age but lipid levels oscillate between peaks in late summer (AugusVSeptember) and troughs in late winter (February/March). Qualitative investigations of gut contents and analyses of lipid-class composition and fatty acid food-chain markers of selected sizes and ages of prawn indicate that lipid-rich zooplankton (mainly copepods and krill) form the bulk of the food of prawns from 1 to 4 yr old. Although benthic polychaetes and detrital material tend to increase in relative importance with increasing size and age of prawn, they are of secondary importance compared to pelagic organisms. The older prawns frequently contained substantial numbers of capelin scales, probably from feeding on discarded fish from prawn trawling. This study thus reveals that P borealis in north Norwegian fjords is linked trophically to the highly seasonal pelagic production cycle. The lipid percentage of P borealis is, however, less than that of herbivorous zooplankton but substantially greater than that of the lipid-deficient benthos. INTRODUCTIONThe deep-water prawn Pandalus borealis Krayer is important both commercially and ecologically; despite this, little information exists about its body composition, and thus its nutritional value as a prey species (Shumway et al. 1985, Hopkins et al. 1989a). In general, little is known about the body composition of many caridean decapods, and even less is known about the relative energetics of the body components with regard to age or season (Vernberg 1987).Although growth in Pandalus borealis is often viewed in simple terms as changes in carapace length (CL) per unit time (see Frechette & Parsons 1983), recent studies of high-latitude marine organisms have emphasized that 'growth' is a complex blend of factors and body components, which interplay in a dynamic manner with regard to age, season and functional requirements (Hopkins et al. , 1989b ABSTRACT: Variations in total lipid content (g of lipid, and as % of wet and dry body weights) of the prawn Pandalus borealjs, ranging from eggs to 52 mo old adults, indicate that lipid growth exhibits marked seasonal oscillations while growth in carapace length shows only comparatively weak seasonality. Pos...

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“…These asteroid species are Asterias rubens,14) A. lin cki,15) Ctenodiscus crispatus,15) and Pteraster militaris. 15) In this study, we have found another species of the asteroids Solaster paxillatus and A. amurensis that have relatively high levels of glyceryl ethers present in the form of DAGE in both the pyloric cecal and ovarian lipids.…”

mentioning

confidence: 93%

Content and Composition of Diacyl Glyceryl Ethers in the Pyloric Ceca and Ovaries of the Asteroids <i>Solaster paxillatus</i> and <i>Asterias amurensis</i>

Hayashi

Kishimura

1997

Fisheries science

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The content and composition of diacyl glyceryl ethers (DAGE) of the pyloric cecal and ovarian lipids of the asteroids Solaster paxillatus and Asterias amurensis were investigated.In both species, the pyloric cecal lipids contained a relatively high percentage of DAGE. On the other hand, the ovarian lipids of S. paxillatus had an abundance of these compounds but were rela tively low percentages in A. amurensis. The unsaponifiable matter isolated from the tissue neutral lipids consisted of remarkably high levels of glyceryl ethers and small amounts of alkenyl types. Among the different tissues examined, glyceryl ethers originated from DAGE were in general similar in composi tion; the most predominant component was 18:0 alcohol followed by 20:1 and 16:0 alcohols. The fatty acid compositions of DAGE and/or triglyceride classes of the different tissue lipids of the above two asteroid species were also discussed.

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Reproduction of asteroids from Balsfjorden, Northern Norway: Analyses of lipids in the gonads of Ctenodiscus crispatus, Asterias lincki and Pteraster militaris

Cited by 19 publications

References 22 publications

Seasonal changes in biochemical composition of body walls, gonads and pyloric caeca in two populations ofSclerasterias mollis (Echinodermata: Asteroidea) during the annual reproductive cycle

Seasonal changes in biochemical composition of body walls, gonads and pyloric caeca in two populations ofSclerasterias mollis (Echinodermata: Asteroidea) during the annual reproductive cycle

Total lipid content, and lipid and fatty acid composition of the deep-water prawn Pandulus borealis from Balsfjord, northern Norway: growth and feeding relationships

Content and Composition of Diacyl Glyceryl Ethers in the Pyloric Ceca and Ovaries of the Asteroids <i>Solaster paxillatus</i> and <i>Asterias amurensis</i>

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