TY - JOUR ID - 2367 TI - Life history traits and gonad histology of an endemic cyprinid fish, Mond spotted barb, Capoeta mandica from Southern Iran JO - Caspian Journal of Environmental Sciences JA - CJES LA - en SN - 1735-3033 AU - Choobineh, R. AU - Esmaeili, H.R AU - Zareian, H. AU - Gholamhosseini, A. AD - Ichthyology and Developmental Systematics Lab., Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran Y1 - 2017 PY - 2017 VL - 15 IS - 2 SP - 97 EP - 112 KW - Cyprinidae KW - Gonad histology KW - Reproduction indices KW - Spotted barb DO - 10.22124/cjes.2017.2367 N2 - The life history traits and gonad development of an endemic cyprinid fish, the spotted barb, Capoeta mandica (Bianco & Banarescu 1982), from southern Iran was investigated by regular monthly collections from February 2006 through January 2007 and on the basis of microscopic and macroscopic analyses. No information on the spawning characteristics of the fish are available to date. A total of 335 specimens were captured using electrofishing including 253 males and 102 females, resulting in 2.5:1 (male: female) sex ratio, which is significantly different from the expected ratio. The commonly known five standard maturation stages were determined based on the size, shape and weight of the gonads, degree of occupation of the body cavity, presence or absence of ripe oocytes, or milt, diameter of the oocytes in the ovary, and histological observations. These stages were correlated to the reproductive indices. The ovum diameters ranged from 0.04 to 1.31 mm, with the highest mean value in May. The condition factor of male and female specimens was the highest in April. The female GSI increased from March to May, peaking in the middle of spring and decreased significantly in June. Based on the gonad   maturation stages, gonadosomatic index (GSI), modified GSI, mean egg diamete­r, condition factor (K) and Dobriyal index (DI), it was concluded that the spotted barbspawns during May and June. The provided data, contribute baseline data towards management ecology and conservation of this endemic fish species. UR - https://cjes.guilan.ac.ir/article_2367.html L1 - https://cjes.guilan.ac.ir/article_2367_fc7e3326b6a77f0c74509a32abbc191b.pdf ER -