Browsing by Author "Leit�o, Alexandra"
Now showing items 1-8 of 8
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ANEUPLOIDY IN THE PEARL OYSTER PINCTADA RADIATA (LEACH, 1814): EVIDENCE FOR NONRANDOM CHROMOSOME LOSS AND GAIN IN MARINE BIVALVES
Khatir, Zenaba; Hizam, Zainab; Lyons, Brett; Leitão, Alexandra ( Institute of Malacology , 2022 , Article)Aneuploidy, or presence of an abnormal number of chromosomes, has been commonly observed in marine bivalves. This phenomenon has also been shown to be negatively correlated with growth and survival rates in several species ... -
Baseline distribution of petroleum hydrocarbon contamination in the marine environment around the coastline of Qatar
Al-Shamary, Noora; Hassan, Hassan; Leitão, Alexandra; Hutchinson, Simon M.; Mondal, Debapriya; ... more authors ( Elsevier Ltd , 2023 , Article)Levels of organic contaminants (TPHs, PAHs) were simultaneously determined in both abiotic (sediments, seawater) and biotic (Pinctada radiata oysters) samples at four sites along the coastline of Qatar (Arabian Gulf) in ... -
Cytogenetic Characterization of Three Arabian Gulf Bivalve Species
Al-Saad, Aysha; Khatir, Zenaba; Al-Maslamani, Ibrahim; Leitão, Alexandra ( Institute of Malacology , 2020 , Article)The diploid number and karyotype of three endemic and highly distributed species from the Qatari shores: Brachidontes variabilis (Krauss, 1848) (Mytilidae), Isognomon nucleus (Lamarck, 1819) (Pteriidae) and Neotrapezium ... -
Deep behavioral impairment in the pearl oyster Pinctada radiata exposed to anthropogenic noise and light stress
Charifi, Mohcine; Khalifa, Razan; Giraldes, Bruno W.; Sow, Mohamedou; Hizam, Zainab; ... more authors ( Frontiers Media SA , 2023 , Article)The pearl oyster Pinctada radiata is an iconic species in the Arabian Gulf, which is one of the ecosystems most at risk in the world because of the multiple sources of pollution it faces. Alongside chemical pollution, the ... -
Ecogenotoxicological Impact of Marine Pollutants on Qatari Bivalves: An Experimental Approach
Khatir, Zenaba; Hamadou, Radhouane Ben; Range, Pedro; Alnaimi, Hajer; Leitão, Alexandra ( Hamad bin Khalifa University Press (HBKU Press) , 2018 , Conference)The geographical and hydrological characteristics and industrial activities of the Arabian/Persian Gulf contribute to its classification as a stressed marine environment. The persistency of some contaminants released by ... -
Increasing knowledge to restore oyster beds and related services in the Arabian-Persian Gulf
Giraldes, Bruno Welter; Smyth, David; Chatting, Mark; Al-Ashwel, Aisha A.; Al-Omary, Najat H.; ... more authors ( Elsevier B.V. , 2023 , Article)The historical collapse of the pearl oyster ecosystem in the Arabian-Persian Gulf contributed to the long-term loss of biological and economic functionality within key shallow-water marine environments. This study introduces ... -
Streptococcosis a Re-Emerging Disease in Aquaculture: Significance and Phytotherapy
Van Doan, Hien; Soltani, Mehdi; Leitão, Alexandra; Shafiei, Shafigh; Asadi, Sepideh; ... more authors ( MDPI , 2022 , Article Review)Streptococcosis, particularly that caused by S. iniae and S. agalactiae, is a major re-emerging bacterial disease seriously affecting the global sustainability of aquaculture development. Despite a wide spread of the disease ... -
Targeted and suspect screening of contaminants in coastal water and sediment samples in Qatar
Liu, Lan; Aljathelah, Noora Mahmood; Hassan, Hassan; Giraldes, Bruno Welter; Leitão, Alexandra; ... more authors ( Elsevier B.V. , 2021 , Article)In recent years, high resolution mass spectrometry (HRMS) combined with separation techniques has allowed comprehensive analysis of contaminants of emerging concern (CECs) as well as their metabolites and transformation ...





