Haemocyte morphology and function in the Akoya Pearl Oyster, Pinctada imbricata

2010 ◽  
Vol 105 (1) ◽  
pp. 36-48 ◽  
Author(s):  
Rhiannon P. Kuchel ◽  
David A. Raftos ◽  
Debra Birch ◽  
Nicole Vella
Keyword(s):  
Pearl Oyster ◽  
And Function ◽  
Pinctada Imbricata

scholarly journals Cubagua’s Pearl-Oyster Beds: The First Depletion of a Natural Resource Caused by Europeans in the American Continent

1999 ◽  
Vol 6 (1) ◽  
pp. 57 ◽  
Author(s):  
Aldemaro Romero ◽  
Susanna Chilbert ◽  
M.G. Eisenhart
Keyword(s):  
Natural Resources ◽  
Natural Resource ◽  
Conservation Policy ◽  
Pearl Oyster ◽  
Biological Conservation ◽  
American Continent ◽  
First Case ◽  
Pearl Oysters ◽  
Interdisciplinary Approaches ◽  
Pinctada Imbricata

Cubagua’s Pearl-Oyster Beds: The First Depletion of a Natural Resource Caused byEuropeans in the American Continent Interdisciplinary approaches to understanding the causes and mechanisms of depletion of natural resources can provide powerful tools in biological conservation policy. We report here what we believe was the first case of a depletion of a natural resource in the American continent by Europeans: the pearl-oyster (Pinctada imbricata) beds off the coast of Cubagua, Venezuela, in the early sixteenth century.Key words: Pearl-oysters, Depletion, Natural Resources, Overexploitation, HumanRights, Venezuela, Cubagua.

scholarly journals De novo transcriptome assembly of the Qatari pearl oyster Pinctada imbricata radiata

2020 ◽  
Vol 51 ◽  
pp. 100734
Author(s):  
Tim P. Bean ◽  
Zenaba Khatir ◽  
Brett P. Lyons ◽  
Ronny van Aerle ◽  
Diana Minardi ◽  
...  
Keyword(s):  
De Novo ◽  
Transcriptome Assembly ◽  
Pearl Oyster ◽  
De Novo Transcriptome Assembly ◽  
De Novo Transcriptome ◽  
Pinctada Imbricata

An alpha-2 macroglobulin in the pearl oyster Pinctada fucata: Characterization and function in hemocyte phagocytosis of Vibrio alginolyticus

2016 ◽  
Vol 55 ◽  
pp. 585-594 ◽  
Author(s):  
Zhongliang Wang ◽  
Bei Wang ◽  
Gang Chen ◽  
Yishan Lu ◽  
Jichang Jian ◽  
...  
Keyword(s):  
Pearl Oyster ◽  
Vibrio Alginolyticus ◽  
Pinctada Fucata ◽  
And Function

scholarly journals Reproductive biology of the rayed pearl oyster (Pinctada imbricata radiata, Leach 1814) in Izmir Bay

2021 ◽  
Vol 50 (1) ◽  
pp. 87-97
Author(s):  
Selcuk Yigitkurt
Keyword(s):  
Gonad Index ◽  
Reproductive Activity ◽  
Condition Index ◽  
Pearl Oyster ◽  
Strong Positive Correlation ◽  
Spawning Activity ◽  
Izmir Bay ◽  
First Maturity ◽  
Pinctada Imbricata

Abstract The present study was carried out to determine gonadal stages and quality of pearl oyster meat (Pinctada imbricata radiata, Leach, 1814) in Izmir Bay (Turkey). Pearl oyster samples were collected from the study area at a depth of ~5 m between February 2013 and January 2014. The highest and lowest temperature was measured in July and January as 27°C and 14.2°C, respectively. The maximum chlorophyll a value of 4.640 μg l−1 was calculated in May and the lowest value of 1.009 μg l−1 was recorded in April. Individuals reached their first maturity in April. Spawning activity was observed from June to September and the gonad index (GI) was at the highest level during those months. The development was observed from April to February. The overall female to male ratio was 1.32:1 (p < 0.05) and it did not affect the GI (p > 0.05). There is a strong positive correlation between the GI and temperature (p < 0.05). The highest condition index (CI) was recorded in May as 12.31 ± 0.51, whereas the lowest one in January as 7.37 ± 0.22. As a result, this study revealed that the pearl oyster population in the region is characterized by high reproductive activity, especially during the summer months.

scholarly journals Identification and Characterization of microRNAs and Their Predicted Functions in Biomineralization in the Pearl Oyster (Pinctada fucata)

Biology ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 47 ◽  
Author(s):  
Songqian Huang ◽  
Yuki Ichikawa ◽  
Kazutoshi Yoshitake ◽  
Shigeharu Kinoshita ◽  
Yoji Igarashi ◽  
...  
Keyword(s):  
Expression Patterns ◽  
Target Prediction ◽  
Adductor Muscle ◽  
Pearl Oyster ◽  
Pinctada Fucata ◽  
Internal Reference ◽  
Stem Loop ◽  
Ongoing Research ◽  
U6 Snrna ◽  
And Function

The biological process of pearl formation is an ongoing research topic, and a number of genes associated with this process have been identified. However, the involvement of microRNAs (miRNAs) in biomineralization in the pearl oyster, Pinctada fucata, is not well understood. In order to investigate the divergence and function of miRNAs in P. fucata, we performed a transcriptome analysis of small RNA libraries prepared from adductor muscle, gill, ovary, and mantle tissues. We identified 186 known and 42 novel miRNAs in these tissues. Clustering analysis showed that the expression patterns of miRNAs were similar among the somatic tissues, but they differed significantly between the somatic and ovary tissues. To validate the existence of the identified miRNAs, nine known and three novel miRNAs were verified by stem-loop qRT-PCR using U6 snRNA as an internal reference. The expression abundance and target prediction between miRNAs and biomineralization-related genes indicated that miR-1990c-3p, miR-876, miR-9a-3p, and novel-3 may be key factors in the regulatory network that act by controlling the formation of matrix proteins or the differentiation of mineralogenic cells during shell formation in mantle tissue. Our findings serve to further clarify the processes underlying biomineralization in P. fucata.

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