Family Variation of Aquatic Insects and Water Properties to Assess Freshwater Quality in El-Mansouriya Stream, Egypt

Haggag, Asmaa A.; Mahmoud, Magdy Shayboub Ali; Bream, Ahmed S.; Amer, Moneir S.

doi:10.4001/003.026.0162

Cited by 8 publications

(5 citation statements)

References 21 publications

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“…In early geological time, lakes and wetlands of the Ismuth of Suez (which is now traversed by the Suez Canal) expanded greatly and extensive marshland conditions developed close this gate to Africa. The Gulf of Suez, by its shallow outline, appears to have stayed an uncovered bowl all through the majority of the Pleistocene, and until about 14-15 thousand years past, as soon as sea levels rose overhead near 50 m, linking the Sinai Peninsula to the Eastern Desert (Derricourt, 2005;Bailey et al, 2007 andHaggag et al, 2018). While through drier times of the Pleistocene, the Gulf of Suez was compact in the zone also the Sinai Peninsula was readily accessible from the Eastern Desert with the two areas making one, to a great extent persistent dry zone (Riad, 2019).…”

Section: Discussionmentioning

confidence: 99%

Morphometric Comparison Between Different Populations of Darkling Beetles “Pimilia nilotica (Coleoptera: Tenebrionidae)” In Egypt

Riad

Mahmoud

2020

Egyptian Academic Journal of Biological Sciences. A, Entomology

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Insects include almost 60% of the described eukaryotic animals worldwide. However, the morphological measurements and assessment of the effects of isolation and habitat still lack many insect groups. The current study aimed to compare the morphometric measurements of dissimilar populations of darkling beetles "Pimelia nilotica" in Egypt. A variable comparison of morphometric variations was taken by a threaded micrometer for six different eco-geographical regions from Egypt fall under the Western Mediterranean Coastal Desert, Western Desert Oases, El-Faiyum Depression, the Eastern Desert, Nile Delta, and South Sinai. Twenty-one morphometric measurements were taken in the currents study. Traits best reminiscent of the excellence of populations were distinguished by cluster analysis, and also by the principal component analysis. The primary and second discriminants scores (score 1 and score 2) recorded 76.4% and 23.8%, respectively, of the full variation in samples. Multiple discriminant analysis disclosed clear morphometric differences between Western Desert, Eastern Desert, El-Faiyum Depression, and South Sinai populations. Traits clarifying the maximum of the changeability among populations were those associated with the morphological estimations.

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Section: Discussionmentioning

confidence: 99%

Morphometric Comparison Between Different Populations of Darkling Beetles “Pimilia nilotica (Coleoptera: Tenebrionidae)” In Egypt

Riad

Mahmoud

2020

Egyptian Academic Journal of Biological Sciences. A, Entomology

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“…Dissolved oxygen (DO) was measured using JPB-607A DO Analyzer while pH, conductivity, total dissolved solids (TDS) and oxidation reduction potential (ORP) were measured using SPER Scientific 860033 Benchtop; calibrated handheld pH electronic meter (D1-4337), electronic conductivity meter model (H1-4103)Transparency was measured using a secchi disk Water Quality Meter. (Haggag et al, 2018;Mahmoud and Riad, 2020), Flow rate was measured using a timed float as it moved over a distance of 10 m (Adu and Oyeniyi, 2019). Total nitrates and phosphates concentrations were measured spectrophotometrically using standard methods (Calibrated HACH 3900DR spectrometer, TDS by calibrated handheld electronic TDS meter D4-7103).…”

Section: Water Physico-chemical Samplingmentioning

confidence: 99%

“…Water pollution threaten aquatic biodiversity (Haggag et al, 2018), degrade water quality (Koff et al, 2016) and impact the ecosystem adversely. The growing use of macroinvertebrates, including insects to access the health status of freshwater ecosystem (Valente-Neto et al, 2018;Miguel et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Ecological status of a tropical river in Niger delta area of Nigeria, using aquatic insects

Enajerho¹,

Tambeke²

2021

Afr. J. Environ. Sci. Technol.

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Freshwater ecosystems are the major source of water, being used for domestic, agricultural and industrial purposes. Water bodies are subjected to anthropogenic activities leading to degradation of the water quality. The aim of this study is to assess the health status of Isiokpo River. Aquatic insects were sampled from March to August 2017. Physico-chemical parameters were examined using standard laboratory procedures. A total of 21 taxa comprising of 543 individual insects were recovered. Stations 1, 2 and 3 recorded 53.41, 21.36 and 25.23% of the insect population respectively. A total of six Ephemeroptera, Plecoptera and Trichoptera (EPT) species were recorded in the study. The %EPT was 28.57, 33.33 and 30.77% in station 1, 2 and 3 respectively. There were significant differences in the distribution of dissolved oxygen, phosphate, nitrates transparency, flow velocity, and total dissolved solids across the various stations (p<0.05). The reduced level of dissolved oxygen in station 3 as well the dominance of Chironomus sp. are indications of the impact of anthropogenic activities. The study showed that the Isiokpo River is relatively unhealthy.

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“…52 The positive correlation of chloride with conductivity and total hardness can be attributed to the increase in salinity of the water. 53 The WQI helps in transforming complex data sets into numeric expressions and present the status of water quality as a single number. 54 The degradation of water quality was significantly higher in postmonsoon season (WQI-179.02) and was almost similar in pre-monsoon (WQI-160.83) and in monsoon season (151.17).…”

Section: Environmental Factorsmentioning

confidence: 99%

Assessment of Water Quality Parameters and Aquatic Insect Assemblages in Dalvoy Lake, Mysore District, Karnataka, India.

Abhilash

Mahadevaswamy

2021

Curr. World Environ

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Water is an indispensable natural resource vital for the survival of all life forms. It contributes significantly to the country's economic prosperity and general well-being. As a result, understanding the status of water bodies is crucial to assure their long-term use. A study on water quality parameters and aquatic insect community was therefore carried on the surface waters of Dalvoy Lake which is spread over an area of 133.43 acres and having a length of 2.2 km. Monthly water samples were collected using one-litre labeled plastic containers from three locations between the hours of 8 a.m. and 10 a.m. Water quality analysis was conducted following standard methods and compared to drinking water specifications. The dissolved oxygen content, total hardness, conductivity, total dissolved solids, and turbidity exceeded the permissible limits. Aquatic insects were collected from the same locations and preserved in 4% formalin. A total of 15 species of aquatic insects belonging to four orders, Hemiptera, Coleoptera, Diptera, and Ephemeroptera, were identified in this study. The Hemiptera was shown to be the largest group comprising of 8 species; 4 species of Diptera; 2 species of Coleoptera and a lone species of Ephemeroptera. The computation of aquatic insect dominance status using Engelmann's Scale revealed Diplonychus rusticus, Anisops sp., Enithares sp., Chironomous sp. and Culex sp. as dominant. Biodiversity metrics like the Shannon Index (1.4-2.11) and the evenness index (0.50-0.66) reflect the agitation of the system. Based on the results of the water quality index (163.67) and aquatic insect assemblage, it is evident that the water in Dalvoy Lake is deteriorated and is unfit for domestic usage. The study also indicated the abundance of two genera Chironomous and Culex of the Diptera order which are the index of water pollution. Thus, the present study calls for urgent and strict vigilance and continuous monitoring of this perennial water body for conservation and sustainable management.

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Family Variation of Aquatic Insects and Water Properties to Assess Freshwater Quality in El-Mansouriya Stream, Egypt

Cited by 8 publications

References 21 publications

Morphometric Comparison Between Different Populations of Darkling Beetles “Pimilia nilotica (Coleoptera: Tenebrionidae)” In Egypt

Morphometric Comparison Between Different Populations of Darkling Beetles “Pimilia nilotica (Coleoptera: Tenebrionidae)” In Egypt

Ecological status of a tropical river in Niger delta area of Nigeria, using aquatic insects

Assessment of Water Quality Parameters and Aquatic Insect Assemblages in Dalvoy Lake, Mysore District, Karnataka, India.

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