Volume 17, Issue 4 (Winter 2026)
3 2026, 17(4): 1-17 |
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Abbasi K, Mirzajani A, Moradi Chafi M, Mohammadidost R. Determination of the spawning of main commercial fish in Anzali Wetland under water new climate conditions. 3 2026; 17 (4) :1-17
URL: http://jmb.ahvaz.iau.ir/article-1-1098-en.html
URL: http://jmb.ahvaz.iau.ir/article-1-1098-en.html
Inland Waters Aquaculture Research Center. Iranian Fisheries Sciences Research Institute. Agricultural Research, Education and Extension Organization, Bandar Anzali, Iran.
Abstract: (284 Views)
Anzali Wetland is located in the southwestern part of the Caspian Sea in Guilan Province and it has 4 distinct basins (Abkenar, Siahkeshim, Sorkhankol and shaijan) and 11 permanent rivers. Determination of spawning areas of important resident and anadromous was carried out in 35 stations inside the lagoon, river and floodplains from April 2023 to March 2024 on a monthly basis using electro-shocker, dip nets and cast nets, and by observing the fries and fingerling fish, as well as the female spawners ready to spawn and the newly spawned spawners. The study showed 40 fish species from 16 families at the study stations, and ultimately the spawning distribution points of 23 fish species were determined, and in this article, a distribution map of 8 economically important species was presented. Spawning of tench (Tinca tinca) occurred at 6 stations (17% of stations) and rudd (Scardinius erythrophthalmus) at 8 stations (23% of stations), but spawning of shemaya (Alburnus chalcoides) occurred at 24 stations (69% of stations), wild form of common carp (Cyprinus carpio) at 25 stations (71% of stations), white bream (Blicca bjoerkna) at 26 stations (74% of stations) and pike (Esox lucius) at 27 of 35 stations (77% of stations), and the most spawning areas were for the non-native gibel carp, Carassius gibelio, (32 stations and 91% of stations) and sharpbelly, Hemiculter leucisculus, (28 stations and 80% of stations). It seems that the spawning of phyto-phillus fish occurs at almost all study stations, although the decrease in the water level of the Caspian Sea and the occurrence of droughts have caused a decrease in the water level of the lagoon and, as a result, a decrease in the spawning areas of phyto-phillus fish resident in the lagoon and migrating to the lagoon. According to the results of the present study, the restoration of stocks of zander and European perch, tench, bream, roach and European catfish in the current conditions of the wetland should continue so that their populations are not further threatened.
Type of Study: Research |
Subject:
biology
Received: 2026/02/5 | Accepted: 2026/05/2 | Published: 2026/05/2
Received: 2026/02/5 | Accepted: 2026/05/2 | Published: 2026/05/2
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