Show simple item record

dc.contributor.authorNaderi, Mehdi
dc.contributor.authorNasrollahzadeh Saravi, H.
dc.contributor.authorFazli, H.
dc.contributor.authorNajafpour, Sh.
dc.contributor.authorSoloeimanroudi, A.
dc.contributor.authorMakhlough, A.
dc.contributor.authorLaloei, F.
dc.contributor.authorBehroozi, Sh.
dc.contributor.authorRahmati, R.
dc.contributor.authorYousefian, M.
dc.coverage.spatialIranen_US
dc.coverage.spatialTajanen_US
dc.coverage.spatialChalos riversen_US
dc.coverage.spatialHarazen_US
dc.coverage.spatialSardabrooden_US
dc.date.accessioned2018-08-07T09:38:49Z
dc.date.available2018-08-07T09:38:49Z
dc.date.issued2016
dc.identifier.urihttp://hdl.handle.net/1834/13797
dc.description.abstractThe purpose of this study was to investigate the possibility of natural reproduction of indanger fish in the southern Caspian Sea in Tajan, Haraz,Sardabrood and Chalos rivers, and identify suitable habitats for this species in the study area as a genetic reserve.Sampling of physical and chemical parameters of water, macrobenthic invertebrates and fish fauna was conducted seasonaly in each rivers at selected stations from febrary 2010 during one year. Macrobenthic invertebrate sampling were used bySorber sampler and fish was collected by gill net and electroshocker set with a voltage of 1.7 A and 100-300 V. A total of 53 taxa of macrobenticinvertabrateshave been identified in the four mentioned rivers, in which Tajanriverconsisted of 47 taxa with highest richness.20 species of fish were determined in the studied rivers that 6 of them were non-native species.The results showed that the predominant identified fish species were native in the river. The fish species diversity increases as one moves from the headstream towards the estuaries of the two studied Sardabrud and Chalus rivers.The results of this study showed that the relative abundance of fish species resistant to pollution and hard environmental conditions were much more that sensitive species. physicochemical parameters of water such as; water temperature, DO, BOD5, pH, TSS, TDS, EC, turbidity, nutrients, biodiversity index such as Shanon index, EPT, HFBI, EPT/CHIR, nutrition functioning group and present or absent of fish species showed that there are significant decrease in water qualities from upstraem ratio to down stream (For example, in Tajan river water turbidity varied from 0 at station 1 to 333 NTU at station 6, Which is strongly influenced by sand workshops. As well as the activities of a significant impact of fish farming workshop on the Haraz river water quality). The minimum of HFBI index was 2.84 at station 1 and the maximum was recorded at station 5 with 6.01, and there is not any possibility to natural reproduction of migrated species that are dominant and indanger at downstream. Conditions for natural reproduction of this species in the rivers of srdabrood and Chalus there is to some. In Shahid- Rajaei dam the maximum relative abundance of fish species belonged to Capoeta capoeta, Luciobarbus capito and Squalius cephalus, respectively. These species have different age, length and weight stuctures at Shahid- Rajaei dam inhabitant, and the resourval of this dam and it,s upstream have been preparing auch a favorabile condition that seems there are potentioal of introductionand inhabitant of some of the Migratory and indanger fish species such as Barbels, Sturgeon, Alburnus chalcoides and etc. as genetic reserve for biodiversity preservation.en_US
dc.description.sponsorshipIranian Fisheries Science Research Instituteen_US
dc.language.isofaen_US
dc.publisherIranian Fisheries Science Research Instituteen_US
dc.relation.ispartofseries49355;
dc.titleThe feasibility of creating a natural habitat for spawning, bony fish in the Caspian Sea in order to preserve biodiversity and genetic risken_US
dc.typeReporten_US
dc.description.statusPublisheden_US
dc.format.pages70pp.en_US
dc.publisher.placeTehran, Iranen_US
dc.subject.asfaInhabitanten_US
dc.subject.asfaPollutionen_US
dc.subject.asfaRehabilitationen_US
dc.subject.asfaIndanger fish speciesen_US
dc.subject.asfaAlburnus chalcoidesen_US
dc.subject.asfaSqualius cephalusen_US
dc.subject.asfaLuciobarbus capitoen_US
dc.subject.asfaCapoeta capoetaen_US
dc.type.refereedRefereeden_US
refterms.dateFOA2021-01-30T18:48:26Z


Files in this item

Thumbnail
Name:
49355.pdf
Size:
3.567Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record