Otolith fingerprints of the coral reef fish Stegastes fuscus in southeast Brazil: a useful tool for population and connectivity studies

Diversity of settlement‐stage reef fishes captured by light‐trap in a tropical south‐west Atlantic Ocean coastal reef system

“…Therefore, it is possible that after hatching of demersal eggs, there is considerable larval retention within the coastal lagoon. Although speculative at present, this is corroborated by the observation made by Daros et al (2016), who analysed the chemical composition of otoliths of S. fuscus and established spatial signatures corresponding to fine-scale stratification.…”

“…Although speculative at present, this is corroborated by the observation made by Daros et al . (), who analysed the chemical composition of otoliths of S. fuscus and established spatial signatures corresponding to fine‐scale stratification.…”

Wake of Death: Using historical and contemporaneous data to evaluate the >i<Isopisthus parvipinnis>/i< (Sciaenidae) population structure at the Southwest Atlantic Ocean (23º - 26.9ºS)

“…Several natural tags, such as otolith's shape and its chemical composition, body meristic and morphometric characters, and the presence and prevalence of parasites, among others, have been commonly used in fisheries biology, providing evidences for stock discreteness (Poulin and Kamiya, 2013;Moreira et al, 2020;Moura et al, 2020). Therefore, otolith chemical analysis can be pointed as a successful approach to infer about fish population structure, helping to solve questions as migration patterns, habitat use and connectivity, or fish dynamics and even dietary patterns, where environmental heterogeneity exists (Daros et al, 2016b;Adelir-Alves et al, 2018;Soeth et al, 2020). Nevertheless, coastal systems still represent a challenge for the understanding of chemical signatures once they embrace an inherent variability of environments and are under influence of human action and climate change (Cheung et al, 2013;Wheeler et al, 2016;Araújo et al, 2018).…”

“…The SBB encompass a great variety of estuarine and coastal ecosystems (Biole et al, 2019), which can provide different microchemical signatures in fish otoliths. In the estuarine and coastal waters of the South Brazil Bight (SBB), otoliths were successfully used to assess estuarine depen-dency and habitat use of Micropogonias furnieri (Albuquerque et al, 2012), Centropomus parallelus (Daros et al, 2016a) and Cathorops spixii (Carvalho et al, 2020); connectivity and population structure of Stegastes fuscus (Daros et al, 2016b) and Abudefduf saxatilis Soeth et al, 2019Soeth et al, , 2020; and fish stocks and nursery areas of Genidens genidens (Maciel et al, 2020).…”

“…Marine fish usually present high genetic flow due to their long larval phase duration, large effective population and the lack of physical barriers to their dispersion, which hamper the use of conventional molecular biology tools (Bradbury et al, 2008;Correia et al, 2012). Thus, otoliths have proven to be valuable in assessing fish population structure, movement patterns and habitat connectivity in systems with high genetic flow in water masses heterogeneity in a spatial scale (Higgins et al, 2013;Correia et al, 2014;Daros et al, 2016b;Moreira et al, 2019).…”