Heavy metal accumulation in some aquatic insects (Coleoptera: Hydrophilidae) and tissues of Chondrostoma regium (Heckel, 1843) relevant to their concentration in water and sediments from Karasu River, Erzurum, Turkey

Abstract

The objectives of this research were to determine and compare the heavy element concentrations in two study areas in Erzurum, Turkey (Aşkale and Dumlu sites). Assessment of some heavy elements in sediment, water, fish (Chondrostoma regium) tissues, and some aquatic insects (Coleoptera: Hydrophilidae) were carried out in June to August 2014. Heavy element levels in aquatic insect samples and their associated water and sediment were analyzed by energy dispersive X-ray fluorescence (EDXRF) spectrometer. Fish tissues, from the same habitat, were measured by inductively coupled plasma mass spectrometry (ICP-MS). Eleven elements (Al, Cr, Mn, Fe, Ni, Cu, Zn, As, Cd, Hg, Pb) were measured in fish tissues, and 14 elements (Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Sr, Br, Pb) were measured in insects. According to the results, it can be said that insects were contaminated by water and sediment, thus accumulated higher concentration of some elements than their environment. The fish, which was caught from Aşkale station, accumulates significantly higher level of heavy metals than Dumlu station's fish. The results were compared with national and international standards. The values of some heavy elements were found at higher concentration than the acceptable limits. The possible consequences of these results are briefly discussed from the point of potential hazards to ecology and human health. Element concentrations in fish tissue are below the limits, which are proposed by Turkish Food Codex, FAO/WHO, and EC, and safe for human consumption in the edible parts of fish species in the regions.

Trace metals contamination potential and health risk assessment of commonly consumed fish of Perak River, Malaysia

“…The higher level of Fe and Zn in Devario regina , Channa striatus might be originated form the consumption of water bugs and insects because such aquatic insects are sensitive to both biotic and abiotic factors and can accumulate trace metals from sediments and food. A recent study has shown that such bugs can accumulate a higher amount of Fe, Zn and Cu and solubility of Fe from insects which is even higher than beef [ 62 , 63 ]. Furthermore, from Table 6 it can be elucidated that both Devario regina and Barbonymus schwanenfeldii contain a higher amount of Pb contents because both species take aquatic plants parts as their food.…”

Are Titania Photocatalysts and Titanium Implants Safe? Review on the Toxicity of Titanium Compounds

“…Despite the abundant content of titanium in the Earth’s crust, water contamination by abnormal content of titanium might also affect human health. Titanium has been found in river water, and thus accumulated in aquatic insects [ 85 ]. Therefore, its possible impacts on the food chain and the agricultural damage must be considered.…”

Türkiye’deki Altı Farklı Şehrin Ağır Metal/Metalloid Seviyesinin Dytiscidae (Coleoptera) Türleri Kullanılarak Ölçümü

“…The results of the analyses are given in Table 2. Heavy element analyses were done as described in Aydoğan et al (2017;. Firstly, the samples were dried in an oven at 80°C during 36 h, then pulverized and applied five-ton pressure to make 13 mm diameter tablets of each sample.…”

“…If the limit is exceeded, environmental heavy element pollution begins when element concentrations exceed the self-renewal capacity of nature. In literature there are numerous studies about heavy elements in urban areas which indicate that they are persistent, spreading widely in the environment, pose threat to natural components and human health (Aydoğan et al, 2017;Ye et al, 2018). The term "heavy metal" was searched on the Web of Science (WOS) publication in number 5 360, 64 575 and 88 173 records in the year 1970-1990, 1990-2010 and 2010-2019 respectively.…”

“…Their presence, absence or changing numbers of insects give and idea when evaluate a certain environment. There are some mostly used and suggested organisms when surveying the environment; plants and their organs (Baldantoni et al, 2018), bivalve (Ragi et al, 2017), zooplankton (Itigilova et al, 2016), mosses (Liu et al, 2016), algae (Chu et al, 2019), fish and insects (Aydoğan et al, 2017).…”