Archives
International Journal of Zoology and Applied Biosciences Research Article
Gonadosomatic index of the endemic and endangered Phoxinellus pseudalepidotus (Leuciscidae, Cypriniformes) from Mostarsko blato (Neretva river basin, Bosnia and Herzegovina)
Markotić, I., Ćaleta, M and Glamuzina, B.
Year : 2025 | Volume: 10 | Issue: 6 | Pages: 229-234
Received on: 11/08/2025
Revised on: 19/10/2025
Accepted on: 24/10/2025
Published on: 01/11/2025
-
Markotić, I., Ćaleta, M and Glamuzina, B.( 2025).
Gonadosomatic index of the endemic and endangered Phoxinellus pseudalepidotus (Leuciscidae, Cypriniformes) from Mostarsko blato (Neretva river basin, Bosnia and Herzegovina)
. International Journal of Zoology and Applied Biosciences, 10( 6), 229-234.
-
click to view the cite format
Abstract
Mostar minnow, Phoxinellus pseudalepidotus, is a freshwater fish endemic to the Neretva River basin. Present data suggest that the species is restricted only to wetland of the Mostarsko Blato but it is considered to be distributed more widely in the Neretva River basin. According to IUCN Red List, P. pseudalepidotus is listed as Endangered (EN) under criteria B (B1ab(iii)+2ab(iii)) ver. 3.1. The objective of the present study is to analyze gonadosomatic index of P. pseudalepidotus in the area of Mostarsko Blato (Neretva River basin, Bosnia and Herzegovina). The research was conducted at the area of Mostarsko Blato. The samples of the P. pseudalepidotus species were collected once a month using stationary fishing nets, 7 meters long, 0.7 meters high, and with a mesh diameter of 7 mm and using a "krtol" - a traditional fishing tool. Gonadosomatic index values were calculated for 360 individuals of the species P. pseudalepidotus. The mass of the individuals and the mass of the gonads were weighed with an accuracy of 0.001 g. Based on the mass of the gonads and the body mass, the values of the gonadosomatic index (GSI%) were calculated according to the formula: Gonadosomatic index (GSI%) = Weight of gonads (g) / Weight of fish (g) x 100. In females of the species P. pseudalepidotus, the gonadosomatic index (GSI) was lowest in May (3) and highest in January (21.9). The average annual value of the gonadosomatic index (GSI) for females was 10.73. In males, the gonadosomatic index was lowest in July (1.8) and August (1.8) and highest in February (15.6). The average annual value of the gonadosomatic index for males was 7.42. Based on the movement of average values of the gonadosomatic index by month, separately for females and for males, it was determined that the species P. pseudalepidotus spawns multiple times during the reproductive season, which lasts from the end of January to the end of May.
Keywords
Phoxinellus pseudalepidotus, Gonadosomatic index, Spawning season, Mostarsko Blato.
-
Full Article PDF (
49)
- View HTML Article
Copy Rights
© The Author(s) 2025. This article is published by International Journal of Zoology and Applied Biosciences under the terms of the Creative Commons Attribution 4.0 International License (creativecommons.org), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
