Untitled

Abstract

The relationships between asteriscus otolith morphology (OL, OW, OR and OM) and fish total length were described with a non-linear function (power model) for seven Cyprinid fish species: Capoeta angorae, C. antalyensis, C. caelestis, C. erhani, C. pestai, Pseudophoxinus antalyae and P. fahrettini. These species are endemic to Turkey and have limited distributions. The regression models are quite well fitted with all asteriscus otolith measurements. We were also conducted the regression models for genus level. There was no significant difference between the size of the left and right otoliths (paired t-test) in any of the seven species. This is the first study that examines the relationships between asteriscus otolith morphology and fish total length for four Cyprinid species. These results showed that the equations generated to obtain the fish size using otolith morphology data can be used in dietary studies.

Spatial variation in relationships of otolith measurements with body length of Prussian carp, Carassius gibelio (Bloch, 1782) collected from four lentic habitats in Samsun Province, Türkiye

“…Therefore, the size of the Prussian carp can be back calculated using only the right or left otolith measurements. The literature reports that remarkable differences between right and left asteriscus parameters are mostly not found for many members of the family Cyprinidae (Saygın et al, 2017;Zengin Özpiçak et al, 2018;Emre, 2019;Saygın et al, 2020).…”

“…These estimates can be a reliable tool in studies on length-frequency distributions of fish populations, as well as in predator-prey studies with the aim to calculate the original size of consumed prey (Belfethi and Moulaï, 2022). The otolith-fish size relationships and their importance may vary between species or between different populations of the same species, as well as between different sizes of individuals of the same species (Bostancı et al, 2017;Saygın et al, 2017;Zengin Özpiçak et al, 2018;Emre, 2019;Saygın et al, 2020).…”

Some Aspects of Reproduction in Amblypharyngodon mola from Sylhet, Northeast Bangladesh

“…Biometric features of fish are a widely accepted form of data which bears necessary information about the growth, development and stock assessment of the fish (Muchlisin et al, 2010). The major quantitative features in fish (i.e., total length, body weight, gonad weight, and fecundity) provide actual biological modelling of species in a particular geographical area (Emre, 2020;Tharwat et al, 2018). The understanding on major aspects of wild breeding biology, annual reproductive peak, breeding season, ovarian maturation phases, and fecundity will certainly help in the future management of this species Uddin et al, 2017).…”

A multi-model analysis of growth and maturity biometrics in common Snakeheads, Channa striata, and Channa punctatus collected from Hakaluki Haor, Northeast Bangladesh

“…The different qualitative and quantitative body metrics provide an actual measurement of stock assessment and recruiting success (Felizardo et al, 2015;Lucifora et al, 1999;Richter, 2007). The total length and body weight are extensively used in the growth biometry of fish species (Alves et al, 2018;Emre, 2020;Hajjej et al, 2011;Okgerman, 2005;Richter, 2007;Tharwat et al, 2018), and are drawn interest to ichthyologist for easy acquisition without losing the stock and for the different available model to analyse them (Binohlan & Froese, 2009;Le Cren, 1951). Therefore, current research work had been undertaken to investigate the length weight relationship, gonadosomatic index and Dobriyal index of C. striata and C. punctatus in the greater Sylhet region to assess their biological condition, stock status, and population structure.…”