Results 11 to 20 of about 4,863 (207)

Pinctada margaritifera box from Viminacium [PDF]

open access: yesStarinar, 2017
A Pinctada margaritifera box was unearthed at Viminacium in 1985, at the site of Pe}ine, in a grave containing cremated remains. It was made from the shell of a pearl oyster (Pinctada margaritifera), an exotic clam whose habitat is tropical seas:
Spasić-Đurić Dragana Lj.
doaj   +4 more sources

Kinds of nucleus for effective pearl cultivation of the pearl oysters, Pinctada fucata [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2007
Seeding is the most important aspect of pearl cultivation, and appropriate nucleus can determine the quality of a pearl : nacre secretion and accumulation around the nucleus.
Kanjanachatree, K.   +2 more
doaj   +1 more source

Assessment of an alternative Pinctada margaritifera spat collector in French Polynesia

open access: yesAquaculture Reports, 2021
Plastic waste in the oceans is a growing concern due to its size diversity, its ubiquitous nature and its impact on both marine organisms and ecosystems. While threatened by this marine plastic litter, the aquaculture industries also represent one of its
M. Crusot, C. Lo, N. Gaertner-Mazouni
doaj   +2 more sources

Preliminary survey on the relationship between dimensions of pinctada radiata in Moqam

open access: yes‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 1994
Samples of the pearl oysters pinctada radiata were collected from Moqam (Jat. 26 50 ooNand long. 53 27 ooE) on October and January 1992 and were analyzed to study the relationship among linear measurement. Simple linear regression has revealed that there
F. Ehteshami
doaj   +2 more sources

Anaesthetizing Pinctada radiata with MS 222

open access: yes‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 1993
The effect of MS 222 for inducing anaesthesia in 60 P. radiata was studied under different concentration and various stimulating factors. Based on the results of mortality rate, induction time, duration of anaesthesia, recovery time, responses of the ...
F. Ehteshami; H. Binaei; Sh. Seyd moradi
doaj   +1 more source

Embryonic Hormetic Priming Modulates Later-Life Thermal Tolerance. [PDF]

open access: yesEcol Evol
This study investigates how early‐life thermal environments affect later thermal tolerance in the black‐lip pearl oyster, Pinctada margaritifera. Developmental thermal priming had contrasting, family‐specific effects on thermal tolerance, with conserved stress‐response pathways but evidence of priming‐induced regulatory network reorganization.
Lugue K   +7 more
europepmc   +2 more sources

Insights from tyrosinase into the impacts of modified morphology of calcium carbonate on the nacre formation of pearl oysters

open access: yesFrontiers in Marine Science, 2022
Tyrosinase is a type-3 copper protein with six conserved histidine residues within the copper-binding sites. It participates in mollusk nacre formation.
Xinwei Xiong   +17 more
doaj   +1 more source

Shell colors and microstructures of four pearl oyster species in the South China Sea

open access: yesAquaculture Reports, 2022
Wild marine pearl oyster shells have rich colors, and the color and gloss of pearls cultivated by pearl oysters are closely related to the pearl layer color of the mantle.
Zhenghua Deng   +7 more
doaj   +1 more source

Health risk assessment of heavy metals in three invertebrate species collected along Alexandria Coast, Egypt

open access: yesEgyptian Journal of Aquatic Research, 2020
The distribution of eight heavy metals (Fe, Mn, Cu, Zn, Cr, Ni, Pb and Cd) in three species namely Pinctada radiata, Brachidontes pharaonis and Holothuria polii was determined seasonally from seven stations along Alexandria Coast, Mediterranean Sea ...
El sayed A.E. Hamed   +4 more
doaj   +1 more source

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