Results 41 to 50 of about 1,100 (185)

Insights into the genetic makeup of French Polynesian peripheral populations of the small giant clam Tridacna maxima

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 33, Issue 12, Page 1514-1534, December 2023., 2023
Abstract The small giant clam, Tridacna maxima, is distributed from the Red Sea and East African coast to French Polynesia. Across this widespread Indo‐Pacific range, T. maxima shows strong population structure, in agreement with its limited dispersal abilities.
Florentine Riquet   +13 more
wiley   +1 more source

Microplastics Affect Energy Balance and Gametogenesis in the Pearl Oyster Pinctada margaritifera [PDF]

open access: yesEnvironmental Science & Technology, 2018
Plastic pollution in the environment is increasing at global scale. Microplastics (MP) are derived from degradation of larger plastic items or directly produced in microparticles form (< 5 mm). Plastics, widely used in structures and equipment of pearl farming, are a source of pollution to the detriment of the lagoon ecosystem.
Tony Gardon   +4 more
openaire   +3 more sources

Calcitic Prisms of The Giant Seashell Pinna Nobilis Form Light Guide Arrays

open access: yesAdvanced Materials, Volume 35, Issue 39, September 27, 2023., 2023
The calcitic prisms in Pinna nobilis shells act as optical fiber arrays guiding ambient light with high resolution into the inner shell cavity by total internal reflection. This is attributed to the high refractive index of calcite along the optical axis of the prisms and the coverage of their interfaces by low refractive index organic sheaths ...
Shahrouz Amini   +7 more
wiley   +1 more source

Structural, mineralogical, and biochemical diversity in the lower part of the pearl layer of cultivated seawater pearls from Polynesia [PDF]

open access: yes, 2008
A series of Polynesian pearls has been investigated with particular attention to the structural and compositional patterns of the early developmental stages of the pearl layer.
Perez-Huerta, A.   +16 more
core   +1 more source

Symbiotic relationship between the carapid fish Onuxodon fowleri (Ophidiiformes: Carapidae) and the pearl oyster Pinctada margaritifera (Mollusca: Bivalvia: Pteriidae)

open access: yesScientia Marina, 2018
At Makemo Atoll (French Polynesia), the carapid fish Onuxodon fowleri lives in symbiosis with the black-lip pearl oyster Pinctada margaritifera. Although the symbiont seems to live inside its host bivalve by using it as a shelter, additional data are ...
Orphal Colleye   +4 more
doaj   +1 more source

Wild black-lip pearl oyster, Pinctada margaritifera spat: growth and broodstock development [PDF]

open access: yes, 2023
The black lip pearl oyster, Pinctada margaritifera (Linnaeus,1758) is a marine oyster distributed in the South Pacific, Indo-Pacific regions and the Red Sea. Globally, it is one of the three valuable pearl producing oysters in the pearl culture industry,
Laxmilatha, P   +2 more
core  

Iridescent Color of a Shell of the Mollusk Pinctada Margaritifera Caused by Diffraction

open access: yesOptics Express, 1999
Shells and pearls often show iridescent color. The cause of this phenomenon has been attributed to diffraction, both diffraction and interference, or interference alone. We used a shell of the mollusk Pinctada margaritifera, which shows very strong iridescent colors, to study how this color is produced in the layers of nacre in shells.
Y, Liu, J, Shigley, K, Hurwit
openaire   +2 more sources

Decorated Pinctada Margaritifera: New Data to the Presence of Eastern People in the Civil Town of Aquincum?

open access: yesCommunicationes Archaeologicae Hungariae, 2006
A fragment of a large decorated bi-valve shell was found in the so-called “Diana-sanctuary” (building nr. XXVI) during the excavation carried out by late E. Márity in 1993. The valve is decorated with running animals.
Orsolya
doaj   +1 more source

DNA fingerprinting of pearls to determine their origins. [PDF]

open access: yesPLoS ONE, 2013
We report the first successful extraction of oyster DNA from a pearl and use it to identify the source oyster species for the three major pearl-producing oyster species Pinctada margaritifera, P. maxima and P. radiata. Both mitochondrial and nuclear gene
Joana B Meyer   +5 more
doaj   +1 more source

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