Stock discrimination of the bogue, Boops boops (Actinopterygii: Perciformes: Sparidae), from two Tunisian marine stations using the otolith shape

Discrimination of Diplodus vulgaris (Actinopterygii, Sparidae) stock from two Tunisian lagoons using otolith shape analysis

“…annularis (Trojette et al ., 2015), Oblada melanura (Barhoumi et al ., 2018), Pagellus erythrinus (Mejri et al ., 2020) and B . boops (Ider et al ., 2017; Ben Labidi et al ., 2020 a ). Such asymmetry of otolith shape has also been found in a range of other fish taxa elsewhere in the world, including Gadus morhua (Campana & Casselman, 1993), Clupea harengus (Turan, 2000), Lophius piscatorius (Cañás et al ., 2012), Haemulon plumieri (Treinen-Crespo et al ., 2012), Sicyopterus species (Lord et al ., 2012), Xiphias gladius (Mahé et al ., 2014), Thunnus thynnus (Brophy et al ., 2016), Albatrossia pectoralis (Rodgveller et al ., 2017), Solea lascaris (Chakour & Elouizgani, 2018), and Engraulis encrasicolus (Khemiri et al ., 2018).…”

“…The outlines of the contour shape of each otolith were evaluated using EFA as previously described by Ben Labidi et al . (2020 a , 2020 b ). In the EFA, the method of elliptical Fourier descriptors (FDs) was used, whereby the chain-coding algorithm was used and calculated based on the binary contour projection of each otolith using SHAPE software.…”

“…Therefore, geographic variation in otolith shapes may result from population differences (Stransky, 2005). Recent studies have shown that the otolith shape can vary within and among species due to the combined effects of ontogenetic, genetic and environmental factors, such as temperature, salinity or light regime and food availability (quality and quantity) (Hüssy, 2008; Capoccioni et al ., 2011; Berg et al ., 2018; Ferri et al ., 2018; Ben Labidi et al ., 2020 a ; Więcaszek et al ., 2020) or by sex, growth, maturity and pattern of fishery exploitation (Begg & Brown, 2000), or by individual genotype (Berg et al ., 2018; Jawad et al ., 2020) or the physiological state (Campana & Neilson, 1985), and the separation of populations in both time and space (Lombarte & Lleonart, 1993). In addition, the microstructural increments within otoliths have been used to elucidate the link between sex-change and growth history (McCormick et al ., 2010), since once the deposition of increments has been appropriately validated, the width of increments can be used as a proxy for somatic growth (Campana, 2001).…”

“…vulgaris as one of the artisanal fisheries species, as well as its considerable importance in aquaculture because of its outstanding eating quality, several studies have been conducted on its reproductive biology and growth in the Mediterranean Sea, including Tunisian waters, as well as in the Atlantic and Adriatic Seas. In Tunisian waters, the otolith shape has been investigated in some sparid species, such as Diplodus annularis (Trojette et al ., 2015), Pagellus erythrinus (Mejri et al ., 2018, 2020) and B oops boops (Ben Labidi et al ., 2020 a , 2020 b ). In addition, Khedher & Fatnassi (2018) examined the relationship between total fish length and otolith parameters (length, width and weight) in D .…”

Stock Discrimination of Northern Pike Esox lucius L., 1758 Inhabiting Lakes Simenlik and Ladik (Samsun-Turkey) Using Otolith Biometry and Shape Analysis

“…and have been described as a "flight recorder" of fish (Lecomte-Finiger 1992). They are considered as valuable markers for distinguishing different fish populations (Tuset et al 2003;Petursdottir et al 2006;Zengin et al 2015;Renán et al 2016;Avigliano et al 2019;Mahè et al 2019;Vu and Kartavtsev 2020;Labidi et al 2020;Ghanbarifardi and Zarei 2021;Chen et al 2021). It is critical to determine the phenotypic variations produced by environmental influences in fisheries management and biology.…”