scholarly journals Bioaccumulation of Heavy Metals in Water, Sediments, and Tissues and Their Histopathological Effects on Anodonta cygnea (Linea, 1876) in Kabul River, Khyber Pakhtunkhwa, Pakistan

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Muhammad Iftikhar Khan ◽  
Muhammad Khisroon ◽  
Ajmal Khan ◽  
Naila Gulfam ◽  
Muhammad Siraj ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Digestive Gland ◽  
Soft Tissues ◽  
Freshwater Mussel ◽  
Anodonta Cygnea ◽  
Khyber Pakhtunkhwa ◽  
Histopathological Alterations ◽  
Polluted Sites ◽  
Histopathological Effects ◽  
Kabul River

The present investigation aimed to assess the concentrations of selected heavy metals in water and sediments and their bioaccumulation in tissues of freshwater mussels and their histopathological effects on the digestive gland, gills, and gonads of Anodonta cygnea. Water, sediments, and freshwater mussel samples were collected at four sites, that is, reference and polluted sites, along the Kabul River, Khyber Pakhtunkhwa. The polluted sites were receiving effluents from the industrial, agricultural, municipal, and domestic sources. The order of metals in the water was Zn>Pb>Ni>Cu>Mn>Fe>Cr>Cd, in sediments the order was Fe>Zn>Cr>Ni>Mn>Pb>Cu>Cd, and in the soft tissues the order was Fe>Zn>Mn>Pb>Cu>Cr>Ni>Cd. Histopathological alterations observed in polluted sites of Kabul River were inflammation, hydropic vacuolation, and lipofuscin pigments (in digestive gland), gill lamellar fusion, dilated hemolymphatic sinus, clumping, and generation of cilia and hemocytic infiltration (in gills), and atresia, necrosis, granulocytoma, hemocytic infiltration, and lipofuscin pigments (in gonads). The histopathological alterations in the organs of Anodonta cygnea can be considered as reliable biomarkers in biomonitoring of heavy metal pollution in aquatic ecosystems.

scholarly journals Histopathology of the Foot, Gill and Digestive Gland Tissues of Freshwater Mussel, Lamellidens marginalis Exposed to Oil Effluent

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Balamurugan S ◽  
◽  
Subramanian P ◽  
Keyword(s):  
Digestive Gland ◽  
Freshwater Mussel ◽  
Dependent Manner ◽  
Muscle Bundle ◽  
Recovery Pattern ◽  
Histopathological Alterations ◽  
Gill Filaments ◽  
Experimental Findings ◽  
Dose Dependent ◽  
Dense Accumulation

We investigated the histopathological alterations in the tissues of freshwater mussel, Lamellidens marginalis in response to oil effluent. Based on the previous acute toxicity, two sub lethal [1/4th (11.88ppt) and 1/10th (8.55ppt)] concentrations of oil effluent (hydrocarbon) were prepared and exposed to mussels. In a first series of experiment, animals were exposed/accumulated for 30 days [Ist, 8th, 15th, 22nd and 30th days] by two sub lethal concentrations of oil. In a second series of experiment, oil exposed animals were thereafter transferred to clean water and kept in it up to 30 days [Ist, 8th, 15th, 22nd and 30th days] to assess the recovery pattern (depuration). At seven-day intervals, histopathological alterations were analyzed in foot, gill and digestive gland tissues of mussel. First series of experimental observation showed remarkable damages in foot (disorganized outer epithelium, necrosis of the cell, the formation of lumina, disorganized muscle bundle); in gill (disruption of gill filaments, odema formation, necrosis, dis-aggregated cilia) and in digestive gland (stoma, detached glandular epithelium, vertical clefts, presence of leucocytes, dense accumulation of luminal material) and also oil effluent inducement are confirmed with the aforementioned results. At second series of experiment, it was found that oil effluent tended to accumulate in tissues in a duration-dose-dependent manner. Tissue burden by oil effluent of mussels completely were restored at 30th day. The present experimental findings may be of early warning signals of oil effluent pollution. In conclusion oil effluent are highly toxic to the Lamellidens marginalis.

scholarly journals Seasonal effects of heavy metals on the date mussel Lithophaga lithophaga (Mollusca:Bivalvia) at Eastern harbor, Alexandria, Egypt

2020 ◽  
Vol 1 (1) ◽  
pp. 62-77
Author(s):  
Shahenaz M. Abd-Ellah ◽  
◽  
Soheir El-Sherif ◽  
Rehab El-Morshedy ◽  
◽  
...  
Keyword(s):  
Heavy Metals ◽  
Protein Content ◽  
Digestive Gland ◽  
Total Protein ◽  
Soft Tissues ◽  
Food Sources ◽  
Total Protein Content ◽  
Ultrastructural Studies ◽  
Different Tissues ◽  
Lithophaga Lithophaga

The edible mussel Lithophaga lithophaga is considered as one of the most important human food sources in Alexandria, Mediterranean Sea. The present study is designed to determine the seasonal bioaccumulation levels of Cd, Co and Pb in the whole soft tissues as well as different tissues of Lithophaga lithophaga. Results revealed that the seasonal bioaccumulation levels of Cd, Co and Pb in date mussel were below the permissible limits or other reported values from other regions of the Mediterranean. On the other hand, the order of metals accumulation level in different tissues was as follows: digestive gland>remaining soft tissues>gonads. The present study confirmed the role of digestive gland as a concentration center for heavy metals. Moreover, total protein content and stress protein responses of the whole soft tissues were evaluated. The total protein content was arranged in the following order: summer>autumn>spring>winter. Five novel stress proteins appeared in summer. The histological and ultrastructural studies of the digestive gland of Lithophaga lithophaga collected in summer and spring showed marked histopathological alternations.

scholarly journals COPPER EFFECT ON COMPONENTS OF THE ANTIOXIDANT SYSTEM OF THE DIGESTIVE GLAND IN THE FRESHWATER MUSSEL ANODONTA CYGNEA

2020 ◽  
pp. 72
Author(s):  
Ирина Викторовна Суховская ◽  
Станислав Ремасо Курпе ◽  
Екатерина Витальевна Борвинская ◽  
Альбина Александровна Кочнева ◽  
Наталья Николаевна Фокина ◽  
...  
Keyword(s):  
Digestive Gland ◽  
Antioxidant System ◽  
Freshwater Mussel ◽  
Anodonta Cygnea ◽  
Copper Effect

Heavy metals accumulation in freshwater mussels (Lamellidens marginalis) as a biological monitor inhabiting in Dhanmondi Lake, Dhaka, Bangladesh.

2016 ◽  
Vol 5 (10) ◽  
pp. 4933
Author(s):  
Sabia Sultana ◽  
A. K. M. Nur Alam Siddiki ◽  
Md. Rokonujjaman ◽  
M. Niamul Naser ◽  
Abdus Salam ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Soft Tissues ◽  
Freshwater Mussels ◽  
Heavy Metal Concentration ◽  
Heavy Metal Concentrations ◽  
Heavy Metals Accumulation ◽  
Manganese Zinc ◽  
Metals Accumulation ◽  
Test Level

The heavy metal concentration (e.g., Mn, Zn, Pb and Ni) were determined in soft tissues and shells of freshwater mussels (Lamellidens marginalis) at the various sites of Dhanmondi lake, Dhaka, Bangladesh between the period April, 2010 and March 2011. The heavy metal concentrations in shells and soft tissues of freshwater mussels were tended to vary significantly among sampling points and seasons in Dhanmondi Lake. Distribution of heavy metals in shell and soft tissue of Lamellidens marginalis followed the order Mn>Zn>Pb>Ni, respectively. According to the t-test, level of manganese, zinc and lead under investigation between shell and tissue showed statistically significant differences [Mn: t=-11.387; df=16; P=0.000; Zn: t=-2.590; df=16; P=0.020 and Pb: t=-2.8679; df=16; P=0.011].

scholarly journals Seaweeds As a “Palatable” Challenge between Innovation and Sustainability: A Systematic Review of Food Safety

2021 ◽  
Vol 13 (14) ◽  
pp. 7652
Author(s):  
Giuseppe Cavallo ◽  
Chiara Lorini ◽  
Giuseppe Garamella ◽  
Guglielmo Bonaccorsi
Keyword(s):  
Heavy Metals ◽  
Systematic Review ◽  
Food System ◽  
Meta Analysis ◽  
Anthropogenic Factors ◽  
Novel Foods ◽  
Food Shortages ◽  
Polluted Sites ◽  
The Impact ◽  
Global Food

Moderate or severe food insecurity affect 2 billion people worldwide. The four pillars of food security (availability, access, use and stability) are in danger due to the impact of climatic and anthropogenic factors which impact on the food system. Novel foods, like seaweeds, have the potential to increase food yields so that to contribute in preventing or avoiding future global food shortages. The purpose of this systematic review was to assess microbiological, chemical, physical, and allergenic risks associated with seaweed consumption. Four research strings have been used to search for these risks. Preferred Reporting Item for Systematic Reviews and Meta-analysis (PRISMA) guidelines were applied. Finally, 39 articles met the selected criteria. No significant hazards for microbiological, allergenic, and physical risks were detected. Regarding chemical risk, algae can accumulate various heavy metals, especially when harvested in polluted sites. Cultivating seaweeds in a controlled environment allows to avoid this risk. Periodic checks will be necessary on the finished products to monitor heavy metals levels. Since the consumption of algae seems to be on the rise everywhere, it seems to be urgent that food control authorities establish the safety levels to which eating algae does not represent any risk for human health.

scholarly journals The genus Pelophylax (Amphibia, Ranidae) in Pakistan: museum collections and possible distribution

Herpetozoa ◽  
2021 ◽  
Vol 34 ◽  
pp. 141-147
Author(s):  
Daniel Jablonski ◽  
Addison Wynn ◽  
Rafaqat Masroor ◽  
Theodore Papenfuss ◽  
Spartak N. Litvinchuk ◽  
...  
Keyword(s):  
Natural History ◽  
Literature Review ◽  
Central Asia ◽  
Washington Dc ◽  
National Museum ◽  
Museum Collections ◽  
Khyber Pakhtunkhwa ◽  
Field Investigations ◽  
The Family ◽  
Kabul River

We provide the first comprehensive data on the questionable distribution of the genus Pelophylax and the family Ranidae from Pakistan. Based on a literature review and two specimens of the genus from Tasp, Panjgur District in Pakistani Balochistan (USNM 26194–95), stored in the Smithsonian National Museum of Natural History, Washington, DC, USA, we discuss the possible occurrence and affiliation of these frogs in the context of Central Asia. Our comparison shows that the nearest records of Pelophylax in relation to the Tasp specimens are reported from more than 280 km (air-line) away in Iran and Afghanistan, which are currently separated by hot and mostly desert environments. We suggest that possible surviving populations of this genus may still be present in Balochistan (Rakhshan River) or Khyber Pakhtunkhwa (Kabul River) Provinces of Pakistan. This would, however, need further field investigations.

scholarly journals Use of Two Aquatic Snail Species as Bioindicators of Heavy Metals in Tigris River-Baghdad

2020 ◽  
pp. 1589-1592
Author(s):  
Harith Saeed Al-Warid ◽  
Hayder Z Ali ◽  
Ghassan Nissan ◽  
Abbas Haider ◽  
Ahmed Yosef
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Soft Tissues ◽  
Snail Species ◽  
Tigris River ◽  
The Mean ◽  
Mean Concentration ◽  
Bellamya Bengalensis

     Thirty individuals of Bellamya bengalensis and Physella acuta were collected and identified from the Tigris River in Baghdad during the period between October to November 2017. The efficiency of bioaccumulation of the two species as bioindicators for aquatic heavy metal pollution with Cd, Ni, Pb and Cu was investigated. Both snail species had the ability to accumulate heavy metals. The mean of Ni concentration in soft tissues of both snails was 1.53 ppm while the mean concentration of other heavy metals was significantly lower; they reached 0.51 ppm, 0.36 ppm and 0.29 ppm, respectively. While no significant differences between B. bengalensis and  P.acuta were noticed in the ability to accumulate the heavy metals. It is concluded that both snails shared the features of good bioindicators due to their sensitivity to pollution.:

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