Results 71 to 80 of about 1,100 (185)

Trophic relationships between the farmed pearl oyster Pinctada margaritifera and its epibionts revealed by stable isotopes and feeding experiments

Aquaculture Environment Interactions, 2016
Bivalve cultures support a host of epibionts, mainly suspension feeders, which can compete for food resources with the cultivated bivalves. However, the magnitude of interspecific competition for food in bivalve aquaculture settings remains inconclusive,
É Lacoste, P Raimbault, M Harmelin-Vivien, N Gaertner-Mazouni   +3 more
doaj   +1 more source

A micro‐geoarchaeological investigation of a cultivation pit (maite) on Teti'aroa atoll, Central‐East Polynesia

Archaeology in Oceania, Volume 60, Issue 1, Page 17-41, April 2025.
ABSTRACT Cultivation pits represented the principal form of horticultural features developed by past atoll communities in Central‐East Polynesia (CEP), and they are still utilised on some atolls in Oceania. The majority of information about the use of cultivation pits in CEP derives from ethnographic and preliminary archaeological investigations.
Elisa Scorsini, Tim Denham, Emilie Dotte‐Sarout, Yannick Devos, Luc Vrydaghs, Guillaume Molle   +5 more
wiley   +1 more source

Influence of preoperative food and temperature conditions on pearl biogenesis in Pinctada margaritifera [PDF]

Aquaculture, 2017
Trophic conditions and water temperature strongly influence bivalve physiological processes and metabolism. In black-lip pearl oyster Pinctada margaritifera, these parameters have been shown to affect shell biomineralization. The present study investigated the effect of preoperative food level (i.e., microalgal concentration) and temperature on pearl ...
Latchere, Oihana, Le Moullac, Gilles, Gaertner-Mazouni, Nabila, Fiévet, Julie, Magré, Kevin, Saulnier, Denis   +5 more
openaire   +2 more sources

Calcite Twinning in Mollusk Shells and Carrara Marble

Advanced Functional Materials, Volume 34, Issue 35, August 28, 2024.
Deformation twinning occurs in Carrara marble and appears in polarized light microscopy as parallel lines in calcite crystals (bottom left). Twins are known to harden and toughen calcite crystals. Twins are never observed within mollusk shell calcite prisms (top left).
Cristina Castillo Alvarez, John L. Grimsich, Connor A. Schmidt, Harrison Lisabeth, Anne Voigtländer, Pupa U. P. A. Gilbert   +5 more
wiley   +1 more source

The pearl oyster (Pinctada margaritifera) aquaculture in French Polynesia and the indirect impact of long-distance transfers and collection-culture site combinations on pearl quality traits

Aquaculture Reports, 2019
In French Polynesia, the P. margaritifera pearl aquaculture industry is spread over a vast area, as large as Europe. All the oysters for this the highly economically important activity are supplied from just a few collection lagoons, but they are grown ...
Chin-Long Ky, Floriane Broustal, Dan Potin, Cédrik Lo   +3 more
doaj   +1 more source

The archaeology of shellfishing practices on Ua Huka, Marquesas Archipelago (French Polynesia)

Archaeology in Oceania, Volume 59, Issue 2, Page 251-274, July 2024.
Abstract Shellfish remains are ubiquitous to coastal archaeological sites in the Marquesas but have seldom been the focus of dedicated investigations into their contribution to past diet and daily life. On the island of Ua Huka, in the northern group of the archipelago, people have consumed a variety of shellfish since their arrival on the island ...
Gabrielle Traversat, Eric Conte, Guillaume Molle   +2 more
wiley   +1 more source

Fluorescence from pearls and shells of black lip oyster, Pinctada margaritifera, and its contribution to the distinction of mother oysters used in pearl culture [PDF]

, 1987
The fluoresence of pearls and shells of Pinctada margaritifera (black lip oyster) has been measured in order to distinguish the species of mother oysters which produce those pearls. A distinction is possible for pearls of P.
三好, 正毅, Komatsu, Hiroshi, Matsuda, Yasunori   +2 more
core  

Species Inventory and Weight Measurements of Biofoulings Attached on the Pearl Oyster, Pinctada margaritifera, from Arakan Waters, North Sulawesi

, 2018
This study was conducted with the aims to identify biofoulings living on the shell of the pearl oyster, Pinctada margaritifera and to analyse the weights of the biofoulings for three months.
Mamangkey, N. Gustaf F., Kussen, Janny D., Toreh, Putri T. J., Lumuindong, Frans, Boneka, Farnis B.   +4 more
core   +1 more source

Challenging trophic position assessments in complex ecosystems: Calculation method, choice of baseline, trophic enrichment factors, season and feeding guild do matter: A case study from Marquesas Islands coral reefs

Ecology and Evolution, Volume 14, Issue 7, July 2024.
Abstract Assessments of ecosystem functioning are a fundamental ecological challenge and an essential foundation for ecosystem‐based management. Species trophic position (TP) is essential to characterize food web architecture. However, despite the intuitive nature of the concept, empirically estimating TP is a challenging task due to the complexity of ...
Yves Letourneur, Pauline Fey, Jan Dierking, René Galzin, Valeriano Parravicini   +4 more
wiley   +1 more source

Exploring the Mineral Composition, Structure, and Function of a Freshwater Bivalve Adhesive

Advanced Materials Interfaces, Volume 11, Issue 17, June 17, 2024.
The freshwater oyster, Etheria elliptica, produces a mineralized adhesive consisting of aragonite nanoparticles that are less dense and more crystallographically disordered at the exterior than at the interior of the adhesive. The resulting material has a gradient in hardness and elasticity with the adhesive closest to the exterior being softer and ...
Rebecca A. Metzler, Julia Zaborowsky, Leon Nichols, Jack Underhill, Jack Tregidga, Chelsea Rogers, Deniz Rende, Steven Bouillon, David P. Gillikin   +8 more
wiley   +1 more source