Larval energetics of the Sydney rock oyster Saccostrea glomerata and Pacific oyster Magallana gigas

Gibbs, M; Scanes, E; Parker, L; Byrne, M; O'Connor, W; Virtue, P; Ross, P

Larval energetics of the Sydney rock oyster Saccostrea glomerata and Pacific oyster Magallana gigas

Gibbs, M Scanes, E

Parker, L Byrne, M O'Connor, W Virtue, P Ross, P

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Publisher:: Inter-Research Science Center
Publication Type:: Journal Article
Citation:: Marine Ecology Progress Series, 2020, 656, pp. 51-64
Issue Date:: 2020-12-10

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Field	Value	Language
dc.contributor.author	Gibbs, M
dc.contributor.author	Scanes, E https://orcid.org/0000-0001-7520-3804
dc.contributor.author	Parker, L
dc.contributor.author	Byrne, M
dc.contributor.author	O'Connor, W
dc.contributor.author	Virtue, P
dc.contributor.author	Ross, P
dc.date.accessioned	2021-03-16T19:34:42Z
dc.date.available	2021-03-16T19:34:42Z
dc.date.issued	2020-12-10
dc.identifier.citation	Marine Ecology Progress Series, 2020, 656, pp. 51-64
dc.identifier.issn	0171-8630
dc.identifier.issn	1616-1599
dc.identifier.uri	http://hdl.handle.net/10453/147249
dc.description.abstract	© Inter-Research 2020. Larvae are a critical dispersal stage of marine invertebrates, and their survival depends on nutrition and energetics. This study compared the size, survival, metabolic rate and egg and larval lipid class profiles of larvae of the endemic Sydney rock oyster Saccostrea glomerata and the invasive Pacific oyster Magallana gigas through a period of starvation for 5 and 9 d after fertilisation. Starved larvae grew without food until 5 d of age, at which point they stopped developing, but resumed growth when fed. Egg lipids profiles comprised 78.1 and 74.5% triacylglycerol for M. gigas and S. glomerata respectively. When fed, larvae of M. gigas were significantly larger in size and had faster growth and similar survival compared to S. glomerata. When starved, larvae of M. gigas and S. glomerata grew at similar rates, and there was a trend for lower survival of M. gigas. Larval endogenous lipid reserves were deleted in the first 24 h. Larvae of M. gigas had more total lipids and comparatively more diacylglycerols, monoacylglycerols, phospholipids and cholesterol, whereas S. glomerata had more diacylglycerols and produced sterol esters. Starvation altered the patterns of lipid assimilation, and metabolic rates of larvae of M. gigas and S. glomerata differed over time. When starved, S. glomerata larvae had greater capacity to cope with starvation compared to M. gigas, perhaps due to an evolutionary history in oligotrophic estuaries. As the climate rapidly changes in this global climate-change hotspot, S. glomerata is likely to be negatively affected.
dc.language	en
dc.publisher	Inter-Research Science Center
dc.relation.ispartof	Marine Ecology Progress Series
dc.relation.isbasedon	10.3354/meps13538
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0405 Oceanography, 0602 Ecology, 0608 Zoology
dc.subject.classification	Marine Biology & Hydrobiology
dc.title	Larval energetics of the Sydney rock oyster Saccostrea glomerata and Pacific oyster Magallana gigas
dc.type	Journal Article
utslib.citation.volume	656
utslib.for	0405 Oceanography
utslib.for	0602 Ecology
utslib.for	0608 Zoology
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
utslib.copyright.status	closed_access	*
dc.date.updated	2021-03-16T19:34:37Z
pubs.publication-status	Published
pubs.volume	656

Abstract:

© Inter-Research 2020. Larvae are a critical dispersal stage of marine invertebrates, and their survival depends on nutrition and energetics. This study compared the size, survival, metabolic rate and egg and larval lipid class profiles of larvae of the endemic Sydney rock oyster Saccostrea glomerata and the invasive Pacific oyster Magallana gigas through a period of starvation for 5 and 9 d after fertilisation. Starved larvae grew without food until 5 d of age, at which point they stopped developing, but resumed growth when fed. Egg lipids profiles comprised 78.1 and 74.5% triacylglycerol for M. gigas and S. glomerata respectively. When fed, larvae of M. gigas were significantly larger in size and had faster growth and similar survival compared to S. glomerata. When starved, larvae of M. gigas and S. glomerata grew at similar rates, and there was a trend for lower survival of M. gigas. Larval endogenous lipid reserves were deleted in the first 24 h. Larvae of M. gigas had more total lipids and comparatively more diacylglycerols, monoacylglycerols, phospholipids and cholesterol, whereas S. glomerata had more diacylglycerols and produced sterol esters. Starvation altered the patterns of lipid assimilation, and metabolic rates of larvae of M. gigas and S. glomerata differed over time. When starved, S. glomerata larvae had greater capacity to cope with starvation compared to M. gigas, perhaps due to an evolutionary history in oligotrophic estuaries. As the climate rapidly changes in this global climate-change hotspot, S. glomerata is likely to be negatively affected.

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http://hdl.handle.net/10453/147249