animal biosystematic
Articles in Press, Accepted Manuscript, Available Online from 12 November 2014
Abstract
Collection and identification snails of Dez river in Khuzestan province in Iran has been investigated in 2012-2013. For the first time, 29 snail species are identified in Dez river in Khuzestan, which they belong to 15 genera from 10 families Identification was done according to morphometric characters ...
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Collection and identification snails of Dez river in Khuzestan province in Iran has been investigated in 2012-2013. For the first time, 29 snail species are identified in Dez river in Khuzestan, which they belong to 15 genera from 10 families Identification was done according to morphometric characters including shape, size of shell, dextral and sinistral position of the shell, operculum, aperture, radula, mucus colour, respiratory pore, keel, renal ridge and reproduction system. The most and least distribution among identified snail species are 18 and 8 species belong to 4 and 2 stations respectively from Dez river, which they are 20/82 kilometers away from each other. The most commonly distributed family is Thiaridae with 8 species Melanopsispraemorsa ، Melanopsis costata ،Melanopsis doriae Melanopsis nodosa، Melanopsis subtingitana, Melanoides pyramis, Melanoides tuberculata Thiara scabra. Bulinus truncates and Lymnaea truncatula are identified as the most frequent and has medical importance.Melanopsis subtingitana Annandale,1918 and Gyraulus huwaizahensis species are reported for the first time from Iran.
animal biosystematic
Mina Azhari; Elham Ahmadi
Abstract
Freshwater snails are intermediate hosts of a large and important group of parasitic worms in medicine and veterinary medicine. In Iran, millions of rials of losses are caused by human Fascioliasis, which can be its intermediate hosts, the right-rounded snail Lymnaea palustris and the left-rounded snail ...
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Freshwater snails are intermediate hosts of a large and important group of parasitic worms in medicine and veterinary medicine. In Iran, millions of rials of losses are caused by human Fascioliasis, which can be its intermediate hosts, the right-rounded snail Lymnaea palustris and the left-rounded snail Physa acuta. To investigate the morphology of freshwater snails L. palustris and P. acuta from two families Lymnaeidae and Physidae, samples were collected during spring and summer from the west and south of Tehran province in 2021 and 2022. A total of 987 samples were collected and after being killed in boiling water, the samples were kept in 70% alcohol. In the laboratory, the radula of the samples were extracted and stained using Malery II and the dental formula, radula teeth and shell morphology were examined. In the species L. palustris, the central tooth is narrow and covered with a small cusp, the marginal teeth are poorly developed and have an irregular structure but in the species P. acuta, the central tooth has three main cusps and large marginal teeth. In terms of the difference in the shell of these two species, we can mention the length and the type of twisting, which in the adult species of L. palustris, their standard size is around 21 mm, but in the adult species of P. acuta, its standard size is It is about 15 mm. Also, a significant correlation was observed between the environmental factor of temperature and the population changes of the studied species.
Elham Ahmadi; Bahareh Ranjnush; Mohsen Mofidi Nistanak
Volume 6, Issue 3 , March 2018, , Pages 71-84
Abstract
The fauna of Jajrood snails in the province of Tehran during the years 2015-2016 was investigated. A total of 23 species of snails were identified for the first time in the Jajrood River of Tehran province, belonging to 17 genera from 19 families, and based on morphometric characteristics (shape, size, ...
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The fauna of Jajrood snails in the province of Tehran during the years 2015-2016 was investigated. A total of 23 species of snails were identified for the first time in the Jajrood River of Tehran province, belonging to 17 genera from 19 families, and based on morphometric characteristics (shape, size, patterns on oysters, aperculus, oysters, rectangular or leftover) The presence of oysters, the location of the respiratory hole, median back, mucus and its color, body size, radula, kidney line and reproductive system were identified. The highest and lowest species diversity among the identified snails is with 14 and 8 species, respectively, from stations 2 and 6 from Jajrood River, 36 km from each other. The largest family in terms of family diversity Cochlicella acuta, Euomphalia pisiformis, Helicella krynickii, Helix lucorum lnnaeus, Helicella derbentina, Euomphalia ravergieri, Caucasotachea atrolabiata, Levantina dschulfensis. Also, Lymnaea truncatula is identified as the most frequent and has medical importance. Limax maculates and Arion ater species are reported for the first time from Iran.
Zahra Ektefa; Elham Ahmadi; Freshteh Shah Mohamadi
Volume 2, Issue 3 , January 2014, , Pages 51-62
Abstract
Abstract
Collection and identification snails of Dez river in Khuzestan province in Iran has been investigated in 2012-2013. For the first time, 29 snail species are identified in Dez river in Khuzestan, which they belong to 15 genera from 10 families Identification was done according to morphometric ...
Read More
Abstract
Collection and identification snails of Dez river in Khuzestan province in Iran has been investigated in 2012-2013. For the first time, 29 snail species are identified in Dez river in Khuzestan, which they belong to 15 genera from 10 families Identification was done according to morphometric characters including shape, size of shell, dextral and sinistral position of the shell, operculum, aperture, radula, mucus colour, respiratory pore, keel, renal ridge and reproduction system. The most and least distribution among identified snail species are 18 and 8 species belong to 4 and 2 stations respectively from Dez river, which they are 20/82 kilometers away from each other. The most commonly distributed family is Thiaridae with 8 species Melanopsispraemorsa, Melanopsis costata, Melanopsis doriae Melanopsis nodosa, Melanopsis subtingitana, Melanoides pyramis, Melanoides tuberculata Thiara scabra. Bulinus truncates and Lymnaea truncatula are identified as the most frequent and has medical importance. Melanopsis subtingitana Annandale, 1918 and Gyraulus huwaizahensis species are reported for the first time from Iran.
