(Registro nro. 527)
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| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
|---|---|
| Year of publication | 1999 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | 161-173 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Pinctada margaritifera |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Pinctada maxima |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Ostra perlera de labios negros |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Feeding |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Bivalve |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Suspension feeding |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Scope for Growth |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Turbidity |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | The tropical pearl oysters Pinctada margaritifera (Linnaeus) and P maxima Janieson are=520 \\ |
| -- | suspension feeders of malor economic importance. P margaritifera occurs in coral reef waters characterised=520 \\ |
| -- | by oligotrophy and low turbidity. P. maxima habitats are generally characterised by high terrigenous=520 \\ |
| -- | sediment and nutrient inputs, and productivity levels. These differences in habitat suggest=520 \\ |
| -- | that P. margaritifera will feed more successfully at low food concentrations, while P. maxima will cope=520 \\ |
| -- | with a wider range of food concentrations and more silty conditions. The effect of varying concentrations=520 \\ |
| -- | of natural suspended particulate matter (SPM) on clearance rate (CR), pseudofaeces production,=520 \\ |
| -- | absorption efficiency (abs.eff.),r espired energy (RE) and excreted energy (EEJ was determined for P.=520 \\ |
| -- | margantifera and P maxlma. The resultant scope for growth (SFG) was deterrmned and related to=520 \\ |
| -- | habitat differences between the oysters. There was no selective feeding on organic particles in either=520 \\ |
| -- | species. P. rnargaritifera had higher CR at low SPM concentration (<2 mg I-'), while P. maxima had=520 \\ |
| -- | higher CR under turbid conditions (SPM: 13-45 mg 1-'). The latter species produced less pseudofaeces=520 \\ |
| -- | in relation to its filtration rates; consequently, this species ingested more SPM than P. margaritifera. P.=520 \\ |
| -- | maxima had positive SFG over a wider range of SPM concentrations (up to 30-40 mg I-') while P. margaritifera=520 \\ |
| -- | maximised SFG under low SPM conditions (<3 mg I-'). Thus feeding responses and energy=520 \\ |
| -- | balance reflected the typical habitats of each species. P, margaritdera retained smaller particles than P.=520 \\ |
| -- | maxima, enabling it to consume a wider particle size range of SPM at low food levels. P. maxima was=520 \\ |
| -- | adapted to its environments of greater SPM load through greater ingestion rates and higher digestive=520 \\ |
| -- | ability. The optimum SPM concentrations and particle size range for P. margaritifera (SPM < 5 mg I-',=520 \\ |
| -- | size > 3 pm) and P. maxima (SPM = ca 3 to 15 mg I-', size > 4 pm) may be used for selection of optimum=520 \\ |
| -- | pearl culture sites. |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | \\nautilus\UNCo\Biblioteca\Separatas\Separata_17_Yukihira_Klumpp_Lucas_1999 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Libro |
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