Lipid as an index of growth and viability in three species of bivalve larvae

Gallager, Scott M.; Mann, Roger; Sasaki, Glenn C.

doi:10.1016/0044-8486(86)90020-7

Cited by 221 publications

(98 citation statements)

References 20 publications

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“…Moreover, our results indicate that TAG content increased during the larval ontogeny of mussels maintained at 10 and 17°C, irrespective of the species. This result agrees well with other studies showing that TAG reserves are gradually accumulated during larval ontogeny prior to metamorphosis (Gallager et al 1986, Delaunay et al 1992, Pernet et al 2006. Intriguingly, veligers maintained at 24°C showed higher TAG levels compared to those maintained at 10 and 17°C, and higher levels compared to later ontogenic stages.…”

Section: Discussionsupporting

confidence: 82%

“…Significant p-values (p < 0.05) are shown in bold. For biochemical analyses, the data were log (x + 1) transformed to achieve a normal distribution Temperature ( basal metabolism (Gallager et al 1986, Fraser 1989. Furthermore, sea scallop survival at competency was partly explained by the efficiency of lipid recovery after embryogenesis (Pernet et al 2003b).…”

Section: Discussionmentioning

confidence: 99%

“…We focused our study on changes in lipid classes. On one hand, bivalve larvae generally store large amounts of triacylglycerol (TAG) as the primary endogenous energy reserve to fuel basal metabolism and growth (Holland 1978, Gallager et al 1986). The TAG level is also a predictor of survival in bivalve larvae (Pernet et al 2004).…”

Section: Introductionmentioning

confidence: 99%

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Temperature effect on survival, growth, and triacylglycerol content during the early ontogeny of Mytilus edulis and M. trossulus

Rayssac¹,

Lacasse²,

Tremblay³

2010

Mar. Ecol. Prog. Ser.

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Temperature is a major factor contributing to the biogeography of intertidal poikilotherms. The population dynamics of intertidal invertebrates like mussels are strongly dependent on larval supply and larval mortality. Unlike adults, which are resistant to fluctuating environmental conditions, larvae are highly sensitive to the physicochemical conditions of the pelagic zone. The effects of rearing temperature on larval and post-larval performance of 2 coexisting mussels species, Mytilus edulis and M. trossulus, were examined in this study. In the first experiment, larvae of both species were reared separately at constant temperatures of 10, 17, and 24°C from D-larvae to the dissoconch stage. In the second experiment, pediveligers were reared under the same experimental conditions as the larvae for 2 wk. Survival, growth, and lipid composition (triacylglycerol [TAG] and sterol [ST] contents) were used to compare the performance of both species. The first experiment showed a species-specific thermal tolerance range, reflecting the biogeography of the species. M. trossulus larvae showed a preference for water at 10 and 17°C, corresponding to the more northerly distribution of this species, whereas M. edulis preferred temperatures of 17 and 24°C. Moreover, the TAG content in larvae of both species varied with temperature, supporting the hypothesis of a positive correlation between energy reserve content and the survival of mussel larvae. In contrast, the species-specific characteristics of thermal tolerance were not observed during post-larval development, suggesting that the selective effect of temperature on mussel species occurs during early ontogeny.

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Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

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Temperature effect on survival, growth, and triacylglycerol content during the early ontogeny of Mytilus edulis and M. trossulus

Rayssac¹,

Lacasse²,

Tremblay³

2010

Mar. Ecol. Prog. Ser.

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“…Even if bivalve larvae are capable of surviving several days without food (Bayne 1965), they still need to feed sufficiently in order to accumulate lipid energy stores necessary for metamorphosis. In the study of Gallager et al (1986), high larval survival was always associated with high lipid content.…”

Section: Introductionmentioning

confidence: 99%

“…obs.). In addition, depending on age and condition, lipid content of bivalve larvae can represent up to 23% of dry body weight (Gallager et al 1986).…”

Section: Introductionmentioning

confidence: 99%

Relationship between feeding and vertical distribution of bivalve larvae in stratified and mixed waters

Raby¹,

Lagadeuc²,

Dodson³

et al. 1994

Mar. Ecol. Prog. Ser.

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ABSTRACT. We documented the vertical distribution, species composition, size and feeding of bivalve veligers in vertically stratified and well-mixed waters of the Baie des Chaleurs, Quebec, Canada. Larvae aggregated at certain depths in both types of water column. When a pycnocline was present, the mean depth of veligers was generally below it. Veligers' vertical distribution was not related to that of water chlorophyll a except at night in stratified conditions. In stratified waters, gut chlorophyll a content of larvae was associated with water chlorophyll a concentration. In mixed waters, larval gut

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Chronic effects of non‐weathered and weathered crude oil and dispersant associated with the Deepwater Horizon incident on development of larvae of the eastern oyster, Crassostrea virginica

Langdon

Stefansson

Pargee

et al. 2016

Enviro Toxic and Chemistry

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The present study examined the effects of chronic exposure of eastern oyster (Crassostrea virginica) larvae to the water-accommodated fractions of fresh and weathered oils collected from the Deepwater Horizon incident, with and without additions of the dispersant Corexit 9500A, as well as to solutions of Corexit alone. Both shell growth of larvae exposed to test materials for a period of 10 d and larval settlement after 28 d of exposure were the most sensitive endpoints, with the 10-d growth endpoint being less variable among replicates. Growth and settlement endpoints were more sensitive than larval survival and normal development after 10 d and 28 d. Acute-to-chronic ratios calculated in the present study suggest that acute toxicities of oils and dispersant for oysters are not predictive of chronic effect levels for growth and settlement; therefore, chronic bioassays are necessary to assess these sublethal effects, in addition to standard 48-h acute toxicity tests. Comparison of 10% effective concentration (EC10) values for chronic 10-d growth and 28-d settlement endpoints with concentrations of total polycyclic aromatic hydrocarbons and dipropylene glycol n-butyl ether (a marker for Corexit) in seawater samples, collected during and after the Deepwater Horizon incident, indicated it was unlikely that elevated concentrations of water-soluble fractions of oil and dispersant in the nearshore environment had significant adverse effects on the growth and settlement of eastern oyster larvae. Environ Toxicol Chem 2016;35:2029-2040. © 2016 SETAC.

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Lipid as an index of growth and viability in three species of bivalve larvae

Cited by 221 publications

References 20 publications

Temperature effect on survival, growth, and triacylglycerol content during the early ontogeny of Mytilus edulis and M. trossulus

Temperature effect on survival, growth, and triacylglycerol content during the early ontogeny of Mytilus edulis and M. trossulus

Relationship between feeding and vertical distribution of bivalve larvae in stratified and mixed waters

Chronic effects of non‐weathered and weathered crude oil and dispersant associated with the Deepwater Horizon incident on development of larvae of the eastern oyster, Crassostrea virginica

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