Environmental effects on the growth of the Chilean oyster Ostrea chilensis in five mariculture locations in the Chiloé Island, Southern Chile

Toro, Jorge E.; Sanhueza, Mario A.; Winter, J. E.; Senn, Carolina M.; Aguila, Pablo; Vergara, Ana M.

doi:10.1016/0044-8486(95)01050-5

Cited by 26 publications

(9 citation statements)

References 17 publications

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“…Cranford & Grant (1990) reported that, although phytoplankton is important as a food source for bivalves, organic detritus can contribute to energy uptake in periods when phytoplankton concentrations are too scarce to satisfy energy demands. Similar results have highlighted the importance of POM concentration in comparative trials to test for differences between culture locations of some bivalve species (MacDonald & Thompson 1985; Wallace & Reinsnes 1985; Wilson 1987; Brown 1988; MacDonald & Bourne 1989; Toro, Sanhueza, Winter, Senn, Aguila & Vergara 1995; Kleinman et al 1996).…”

Section: Discussionsupporting

confidence: 62%

“…This means that PIM could have a negative effect on growth. Toro et al (1995) observed an inverse relationship between growth of Ostrea chilensis and the quantity of PIM in the water column. According to Foster‐Smith (1975), Widdows, Fieth & Worral (1979) and Vahl (1980), increments in the PIM fraction could negatively affect the energy acquisition from POM because of a ‘dilution effect’ of the inorganic fraction.…”

Section: Discussionmentioning

confidence: 88%

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Growth and survival of the scallop Lyropecten (=Nodipecten ) nodosus (L. 1758) in suspended culture in the Cariaco Gulf (Venezuela) during a non-upwelling period

Freites

Lodeiros

Narváez

et al. 2003

Aquaculture Research

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Growth and survival of the scallop Lyropecten nodosus were studied in 1997 at two sites (inner and outer Turpialito Bay) during a non‐upwelling period normally occurring between August and November. Individuals had an initial shell height of 4.86 cm (SD=1.64 cm). Both experimental groups were held in suspended plastic baskets at the same depth (4 m). Measurements of shell height and dry weights of shell, gonad, digestive gland, remaining tissues and shell biofouling were taken at monthly intervals. Environmental parameters, including temperature, phytoplanktonic biomass, total particulate material (TPM) and associated organic (POM) and inorganic (PIM) fractions, were recorded simultaneously. At the end of the study, significant differences in growth and survival of scallops were observed between the two experimental sites. Scallops maintained inside the bay showed a 22% greater increase in shell height (7.41±0.27 cm) than those placed outside the bay (6.37±0.41 cm). Survival of scallops inside the bay was 31% higher compared with scallops outside. The greater availability of food of phytoplanktonic origin during the first two experimental months (July and August) together with greater POM throughout the whole experimental period except September, at the inner bay site, probably explained survival and growth differences observed between the two locations. Results suggest that, during the non‐upwelling period (characterized by low primary productivity and high water temperatures), POM of sedimentary origin may play an important role as an energy source required for metabolic and reproductive activities of L. nodosus.

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Section: Discussionsupporting

confidence: 62%

Section: Discussionmentioning

confidence: 88%

Growth and survival of the scallop Lyropecten (=Nodipecten ) nodosus (L. 1758) in suspended culture in the Cariaco Gulf (Venezuela) during a non-upwelling period

Freites

Lodeiros

Narváez

et al. 2003

Aquaculture Research

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“…Cranford & Grant (1990) reported that, although phytoplankton is an important food source for bivalves, organic detritus could contribute to the energy demand in periods when phytoplankton concentrations are low. Similar results highlight the importance of POM concentration in comparative trials where differences between culture locations of some bivalve species were tested (MacDonald & Thompson 1985;Wallace & Reinsnes 1985;MacDonald & Bourne 1987;Wilson 1987;Toro et al 1995;Kleinman et al 1996;Freites et al 2003Freites et al , 2010.…”

Section: Comparison Of Selected Fa Profiles Between Treatmentssupporting

confidence: 61%

“…Similar results highlight the importance of POM concentration in comparative trials where differences between culture locations of some bivalve species were tested (MacDonald & Thompson ; Wallace & Reinsnes ; MacDonald & Bourne ; Wilson ; Toro et al . ; Kleinman et al . ; Freites et al .…”

Section: Discussionmentioning

confidence: 99%

Comparative growth and survival of spat of the Caribbean pearl oyster,Pinctada imbricatacultivated indoor with microalgae diets and outdoor with natural diet

et al. 2016

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We report the results of survival and growth in size and dry mass of spat of the Caribbean pearl oyster Pinctada imbricata cultivated under outdoor (field culture) and indoor (Laboratory) conditions. Field group fed on environmental seston. Laboratory groups were fed with mono, binary and ternary mixtures of three cultivated algae: Isochrysis galbana (Ig), Tetraselmis chuii (Ig) and the Chaetoceros sp. (Ch-A, isolated from north-eastern Venezuela). After 30 days of trial, fatty acid profiles of spat were determined along with growth in length and height shell, adductor muscle and soft tissue dry mass. During the field grow-out phase (field culture), samplings were performed at days 1, 15 and 30 to measure environmental variables of phytoplankton biomass (chlorophyll a), dissolved oxygen, seston, temperature and salinity. A significant increase in size and soft tissue mass occurred in spat fed the diets including the tropical diatom (Chaetoceros sp.). In contrast, monoalgal diets of Tc and Ig yielded no significant differences in size and mass of spat, compared with the field culture. These results suggest that nutritional requirements of cultivated spat for specific fatty acids of physiological importance for marine bivalves, such as: 16:0, 16:1n-7, 18:2n-6, 20:4n-6, 18:3n-3 and 20:5n-3, were satisfied from microalgal diets with Ch-A, alone or in combination, compared with spat fed from the field culture.

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“…However, a major difficulty in correlating temperature and growth rate in field populations of bivalves is that the correlation, even if it is significant, may not be causal (Wilson 1977;Page & Hubbard 1987). Water temperature may strongly covary with seasonal phytoplankton abundance and/or chlorophyll a (Kautsky 1982;Toro et al 1995;Toro 1996), thus making it difficult to draw any conclusion about the importance of temperature or chlorophyll abundance in regulating growth rate. Strong positive effects on growth would be expected from an increment in the chlorophyll abundance (Page & Hubbard 1987;Camacho et al 1995).…”

Section: Growth and Environmental Variablesmentioning

confidence: 99%

Phytoplankton distribution and oyster,Ostrea chilensis(Philippi 1845), growth at Putemún Channel, southern Chile

Toro

Paredes

Villagra

1999

New Zealand Journal of Marine and Freshwater Research

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The phytoplankton community of the Putemun Channel (southern Chile) and its correlation with some environmental variables is analysed in this paper. Samples were collected on a monthly basis from May 1991 to May 1993. A total of 121 phytoplanktonic species were identified. The phytoplankton cell abundance ranged between 3.5 × 10 4 cells/litre and 11.2 × 10 6 cells/litre. The phytoplankton community was characterised by the dominance of diatoms. An inverse relationship between temperature and species diversity was observed. A significant correlation, after excluding tychoplanktonic benthic forms, was found between chlorophyll a, cell abundances, and temperature. The influence of biotic and abiotic variables on oyster (Ostrea chilensis (Philippi 1845)) growth was analysed. The instantaneous growth rate was found to be positively correlated with both temperature and phytoplankton abundance, whereas significant negative correlation between growth and amount of particulate inorganic matter was found.

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Environmental effects on the growth of the Chilean oyster Ostrea chilensis in five mariculture locations in the Chiloé Island, Southern Chile

Cited by 26 publications

References 17 publications

Growth and survival of the scallop Lyropecten (=Nodipecten ) nodosus (L. 1758) in suspended culture in the Cariaco Gulf (Venezuela) during a non-upwelling period

Growth and survival of the scallop Lyropecten (=Nodipecten ) nodosus (L. 1758) in suspended culture in the Cariaco Gulf (Venezuela) during a non-upwelling period

Comparative growth and survival of spat of the Caribbean pearl oyster,Pinctada imbricatacultivated indoor with microalgae diets and outdoor with natural diet

Phytoplankton distribution and oyster,Ostrea chilensis(Philippi 1845), growth at Putemún Channel, southern Chile

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