No full-text available
To read the full-text of this research,
you can request a copy directly from the authors.
Glyptothorax kurdistanicus (Berg, 1931) (Pisces, Siluriformes, Sisoridae) in the lower reaches of the Tigris River, Iraq?
... The main river is approximately 230 km long, 50-90 m wide, and 7-13 m deep, and the river sector in this study is approximately 45 km wide, extending from Al-Kut to Al-Haay city. The basin was inhabited by more than a million individuals using approximately 432,000 m3 / year of processed water and moving within the sediment plain across an agricultural area of approximately 215019 ha in the southwest of Iraq (MOA and I, 1991;Jawad et al., 2009). ...
Received: 19 February 2022 This study aimed to determine the amount of heavy metal pollution in the Al Garraf River sediment in Wasit, Iraq. Seven samples were gathered from the Al-Gharraf River in July 2021. GPS was used to determine the geographic location of these samples. The pollution level in the Al Gharraf River sediments caused by manganese, chromium, cadmium, cobalt, zinc, nickel, copper, and lead pollution indices such as enrichment factor, geo-accumulation, contamination factor, and pollution load were used to analyze the situation. Although geo-accumulation has mostly been used to evaluate contamination in freshwater sediment, one of the most frequently utilized factors is an enrichment to quantify to determine degrees of anthropogenic contamination and ratios of enrichment. On the other hand, the pollution load index is calculated as the number of times the concentration of heavy metals in sediments exceeds the concentration and level and is used for estimating the total amount of toxicity of heavy metals in samples. At the same time, our study discovered that cadmium is heavily polluted (contamination value is 5.70) in Al Gharraf River sediments, while nickel (1.51) and lead (1.75) are moderately polluted, but that the metals manganese, cobalt, chromium, zinc, and copper are not.
... Lev Berg (1931) described G. kurdistanicus (common name: Mesopotamian sucker catfish) for first time in the Lesser Zab River and may be it is the normal habitat for this species (Jawad et al., 2009;Coad, 2014;Froese and Pauly, 2016). On the other hand, some surveys have confirmed its presence in the Great Zab River in addition to other rivers such as Dez, Karun and Karkheh (Abdullah and Mhaisen, 2010). ...
The present nematological study was carried out on 23 fishes hunted in Greater Zab River, Kurdistan Region of Iraq. The survey period embraced June, July and August of 2016. Adult stages of the parasitic nematode, Rhabdochona (Rhabdochona) longispicula Belous in Roytman, 1963 were identified in the intestinal tract of Glyptothorax (G.) kurdistanicus, parasites were fixed in cold 4% formaldehyde solution, cleared with glycerin. The proportion of infection and mean intensity of the aforesaid parasite were estimated 17.39% and 3 respectively. According to the current investigation and reviewing the previous literatures, could be said that the detection and differentiation of this fish intestinal dweller had conduced to the first record of R. (R.) longispicula in Iraq. Moreover, G. kurdistanicus was reckoned a new host for this roundworm.
Taxonomic studies on freshwater fishes of Iraq were reviewed. Considerable differences in number of species that have been recorded in Iraqi freshwater were noticed, the number ranged from 44 to 70 species. The difference might be due to recording of synonyms or incorrect records. The continuous record of new species on various periods may have contributed to such variation. Thirty eight species, mainly cyprinids, fell into the disagreement category. A final list of the species which have received majority agreement was proposed with a total of 53 species and 12 families.
Freshwater biodiversity in general and freshwater fish biodiversity in particular are among the hot global issues that gained attention in an ongoing engagement. It is clear that the inland waters and freshwater biodiversity are very much treasured natural resources that human cannot depend on as they are important in economic, cultural, aesthetic, scientific, and educational terms. Therefore, their conservation and management are important and prerequisite state to the interests of all humans, nations, and governments. However, this valuable natural treasure is in disaster. Fresh waters are facing failures in biodiversity far greater than the terrestrial ecosystems, and if human activities continue to have the same pace, then this biodiversity will vanish earlier than expected. In the present chapter, documentation on the freshwater fish biodiversity of Iraq is given in the frame of species richness, taxonomy and nomenclature, how valuable the freshwater fishes of Iraq are, endangered species, threat and challenges, and conservation. The interactions of all these issues have led to a decline in the population of a certain number of freshwater species. Also, a clear range reduction of other species has been observed. As in many other world countries, the freshwater fishes of Iraq are facing a strong competition on both food resources and habitats from introduced species such as different species of carp and tilapia. Therefore, measures of protection of freshwater biodiversity are perhaps the eventual need for the conservation of this fish group in spite of the difficulties that such issues might confront the influence of the upstream drainage network, the surrounding land, the riparian zone, and—in the case of migrating aquatic fauna—downstream reaches. Globally, these fundamentals are very hard to bring to reality. Immediate action is needed to create large protected areas that include rivers and lakes and balance between human needs and the freshwater biodiversity should be in place to keep the natural ecological balance. Therefore, the absence and presence of the species should be checked continuously and the invasive species should be reported, especially those very hazardous to the native fish fauna and for the habitats. Distinguishing this need will necessitate acceptance of a new pattern for biodiversity safety and freshwater ecosystem.
Taxonomic studies on freshwater fishes of Iraq were reviewed.
Considerable differences in number of species that have been recorded
in Iraqi freshwater were noticed, the number ranged from 44 to 70
species. The difference might be due to recording of synonyms or
incorrect records. The continuous record of new species on various
periods may have contributed to such variation. Thirty eight species,
mainly cyprinids, fell into the disagreement category. A final list of the
species which have received majority agreement was proposed with a
total of 53 species and 12 families.
External morphological traits diagnostic for valid genera in the Asian catfish families Sisoridae and Erethistidae were identified from publications and the examination of specimens. Diagnoses based on external morphological traits are predicted to significantly facilitate taxonomic revisions in these families. Erethistidae contains six valid genera (Ayarnangra, Caelatoglanis, Conta, Erethistes, Erethistoides, Pseudolaguvia) and about 25 species. Sisoridae contains 16 valid genera (Bagarius, Euchiloglanis, Exostoma, Gagata, Glaridoglanis, Glyptosternon, Glyptothorax, Gogangra, Myersglanis, Nangra, Oreoglanis, Parachiloglanis, Pareuchiloglanis, Pseudecheneis, Pseudexostoma, Sisor) and about 144 species. Lists of valid species and their distributions are given for each genus.
Stream water quality of a part of the four western mountainous regions of Iran: Lorastan, Kordestan, Hamadan and Kearmanshah, with a total area of 101.102x103 km2 was investigated. The chemistry of major elements such as Ca, K, Na, Mg, Cl, HCO3, SO4 and alkalinity from hydrological basins of the regions was examined based upon samples from the relatively important basins. The difference in these chemical elements of streams was verified on a region-by-region basis. Temporal changes of water quality in the stream water were examined using a seasonal classification of data. The results showed that the dissolved load of about 70% of all water samples (at all basins during all seasons) was less than 500 mg/l. The same result can be concluded for seasonal variability of EC for the entire area. It was less than 0.550 ds/m for 68% of samples. The pH variation was from 5.5 to 9 with an average of 8.2. The highest and lowest values are from autumn and summer samples, respectively. In summer, the sodium adsorption ratio (SAR) value was maximal, and the agricultural activities cause an increasing on its normal (average annual) rate in the rivers.The results also indicated a very good relationship between the total anions and total cations, during all of seasons. There were no significant relationships between the area of the basin and the chemical element concentrations.These results have been used for the water resources management of the mountainous regions of Iran and the modelling of water quality predication.
E-mail: laith_jawad@hotmail.com Glyptothorax kurdistanicus in the lower reaches of the Tigris River
- Muscat
- Sultanate
- Oman
Muscat, Sultanate of Oman. E-mail: laith_jawad@hotmail.com Glyptothorax kurdistanicus in the lower reaches of the Tigris River
A systematic list of the vertebrates of Iraq
- Mahdi
Mahdi, N.; Georg, P. V., 1969: A systematic list of the vertebrates of
Iraq. Iraq Nat. Hist. Mus. Publ., Baghdad 26, 1-104.
A list of fishes collected from the Little Zab River in Iraq: 1
- A H Al-Rawi
- S Al-Obaidi
- S Z Jawdat
Al-Rawi, A. H.; Al-Obaidi, S.; Jawdat, S. Z., 1978: A list of fishes
collected from the Little Zab River in Iraq: 1. Bull. Biol. Res.
Cent., Baghdad 10, 3-12.
Description of a new siluroid fish, Glyptosternum kurdistanicum from the basin of the Tigris River
- Berg
Berg, L., 1931: Description of a new siluroid fish, Glyptosternum
kurdistanicum from the basin of the Tigris River. Izvestiya Akad.
Nauk SSSR 7, 1267-1270 (in English).
The marine and freshwater fishes of Iraq
- K T Khalaf
Khalaf, K. T., 1961: The marine and freshwater fishes of Iraq. Ar-Rabitta Press, Baghdad, 164 pp.
A list of fishes collected from the Little Zab River in Iraq: 1
- Al-Rawi
Genera of the Asian catfish families Sissoridae and Erthistidae (teleostei: Siluriformis)
- Thompson