Effects of temporary starvation on the survival, and on subsequent feeding and growth, of oyster (Crassostrea gigas) larvae

His, Édouard; Seaman, Matthias

doi:10.1007/bf00349530

Cited by 60 publications

(34 citation statements)

References 7 publications

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“…Growth rates of larval forms have been well characterized for a wide range of species of marine invertebrates (Thorson, 1950;Crisp, 1974;Manahan, 1990;His and Seaman, 1992;Fenaux et al, 1994;McEdward and Herrera, 1999). Most of these studies have focused on the effects of environmental conditions such as food and temperature.…”

Section: Discussionmentioning

confidence: 99%

Gene expression profiling of genetically determined growth variation in bivalve larvae (Crassostrea gigas)

Meyer

Manahan

2010

Journal of Experimental Biology

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Bayne, 2004b). For bivalve larvae, Pace and colleagues have shown that a complex set of physiological processes regulate differences in genetically determined growth rates, including differential feeding rates and protein metabolism. These comparisons between fast-and slowgrowing families of larvae provide clear experimental advantages for understanding the mechanisms of growth heterosis during development. Accepted 27 November 2009 SUMMARY Growth rates in animals are governed by a wide range of biological factors, many of which remain poorly understood. To identify the genes that establish growth differences in bivalve larvae, we compared expression patterns in contrasting phenotypes (slowand fast-growth) that were experimentally produced by genetic crosses of the Pacific oyster Crassostrea gigas. Based on transcriptomic profiling of 4.5 million cDNA sequence tags, we sequenced and annotated 181 cDNA clones identified by statistical analysis as candidates for differential growth. Significant matches were found in GenBank for 43% of clones (N78), including 34 known genes. These sequences included genes involved in protein metabolism, energy metabolism and regulation of feeding activity. Ribosomal protein genes were predominant, comprising half of the 34 genes identified. Expression of ribosomal protein genes showed non-additive inheritance -i.e. expression in fast-growing hybrid larvae was different from average levels in inbred larvae from these parental families. The expression profiles of four ribosomal protein genes (RPL18, RPL31, RPL35 and RPS3) were validated by RNA blots using additional, independent crosses from the same families. Expression of RPL35 was monitored throughout early larval development, revealing that these expression patterns were established early in development (in 2-day-old larvae). Our findings (i) provide new insights into the mechanistic bases of growth and highlight genes not previously considered in growth regulation, (ii) support the general conclusion that genes involved in protein metabolism and feeding regulation are key regulators of growth, and (iii) provide a set of candidate biomarkers for predicting differential growth rates during animal development. Supplementary material available online at

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Section: Discussionmentioning

confidence: 99%

Gene expression profiling of genetically determined growth variation in bivalve larvae (Crassostrea gigas)

Meyer

Manahan

2010

Journal of Experimental Biology

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“…Variability in the environment or food supply affects survivorship by not permitting completion of larval life or successful metamorphosis or by producing slow growth, thereby increasing larval lifespan and exposure to predators. Considerable research has been conducted on the general topic of larval survivorship under laboratory and hatchery conditions (Helm et al, 1973;His and Seaman, 1992;Haws et al, 1993;Laing, 1995), with food quantity and quality receiving particular attention (Helm et al, 1973;Wikfors et al, 1984;Utting, 1986;Thompson and Harrison, 1992;Thompson et al, 1994Thompson et al, , 1996. Application of these results to study larval survival in the field, however, has been extremely difficult because tracking individual larval cohorts is labour intensive at best and essentially intractable in most environments.…”

Section: Introductionmentioning

confidence: 97%

A modelling study of the influence of environment and food supply on survival of Crassostrea gigas larvae

Hofmann

Powell

Bochenek

et al. 2004

ICES Journal of Marine Science

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modelling study of the influence of environment and food supply on survival of Crassostrea gigas larvae. e ICES Journal of Marine Science, 61: 596e616. A biochemically based model was developed to simulate the growth, development, and metamorphosis of larvae of the Pacific oyster (Crassostrea gigas). The unique characteristics of the model are that it: (1) defines larvae in terms of their protein, neutral lipid, polar lipid, carbohydrate, and ash content; (2) tracks weight separately from length to follow larval condition; and (3) includes genetic variation in growth efficiency and egg quality to better simulate cohort population dynamics. The model includes parameterizations for filtration, ingestion, and respiration, which determine larval growth rate, and processes controlling larval mortality and metamorphosis. Changes in larval tissue composition occur as the larva grows and in response to the biochemical composition of the food.Simulations of larval growth indicate that departures of temperature, salinity, or food content from optimum levels reduce larval cohort survival, either because of metabolic constraints that result in death, unsuccessful metamorphosis, or increased predation resulting from increased larval lifespan. Temperatures and salinities near optimal values improve larval survival at low food concentration by increasing ingestion rate or growth efficiency. Also, survival at a given food concentration can vary widely depending on food composition, which determines food quality. The simulations suggest that the ratio of carbohydrate + lipid-to-protein may best describe the overall food quality, with optimal food compositions being characterized by ratios near 1.2 to 1.4 over a range of food concentrations. In contrast, food compositions containing too much or too little protein reduce larval survival, even at saturating food concentrations.In simulations emphasizing genetic variability within the cohort, larvae with high growth efficiency originating from large eggs out-perform other egg qualityegrowth efficiency combinations over a wide range of temperature, salinity, and food contents. As a consequence, suboptimal temperature, salinity, or food content compresses genetic variation by uniformly favouring larvae from large eggs with a high growth efficiency. However, the larval survival obtained from simulations that use a range of food qualities is representative of a much broader range of genetic types. Thus, the simulations support the supposition that food quality is an important variable controlling the survival and genetic variability of C. gigas larval cohorts.

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“…Our objectives were to (1) identify patterns of oyster recruitment in space and over time, (2) characterize variations within different pelagic and benthic larval stages and (3) explore the effects of environmental factors on larval development and re cruitment success. Using a correlative approach, we paid particular attention to the food sources known to play a major role in the development of bivalve mollusk larvae (His et al 1989, His & Seaman 1992.…”

Section: Introductionmentioning

confidence: 99%

Recruitment of the Pacific oyster Crassostrea gigas in a shellfish-exploited Mediterranean lagoon: discovery, driving factors and a favorable environmental window

Lagarde¹,

D’Orbcastel²,

Ubertini³

et al. 2017

Mar. Ecol. Prog. Ser.

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Effects of temporary starvation on the survival, and on subsequent feeding and growth, of oyster (Crassostrea gigas) larvae

Cited by 60 publications

References 7 publications

Gene expression profiling of genetically determined growth variation in bivalve larvae (Crassostrea gigas)

Gene expression profiling of genetically determined growth variation in bivalve larvae (Crassostrea gigas)

A modelling study of the influence of environment and food supply on survival of Crassostrea gigas larvae

Recruitment of the Pacific oyster Crassostrea gigas in a shellfish-exploited Mediterranean lagoon: discovery, driving factors and a favorable environmental window

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