“…Given the above, this study marks the first documentation of osteological malformations, fusion, and shortening of the vertebral column in Plagioscion squamosissimus (Heckel, 1840), an endemic sciaenid fish from the Amazon Basin. Locally known as "pescada-branca" (or South American silver croaker), this species is important for local subsistence fishing [13], and in recent decades, it has been introduced into the major South American basins, mainly in reservoir lakes for commercial purposes [14].…”
Observations of skeletal malformations in fish in the wild are poorly documented and need to be investigated. Here we report the occurrence of body shortening in specimens of Plagioscion squamosissimus collected in the Volta Grande do Xingu, middle Xingu River region (Pará, Brazil), during a 12-month monitoring program (2021–2022). We observed morphological anomalies in nine individuals, of which two underwent radiographic analysis, recording the fusion and compression of vertebrae in different portions of the spine. The average percentage decrease in body length resulting from the deformity was 23.8%. This is the first record of malformation in this species.
“…Given the above, this study marks the first documentation of osteological malformations, fusion, and shortening of the vertebral column in Plagioscion squamosissimus (Heckel, 1840), an endemic sciaenid fish from the Amazon Basin. Locally known as "pescada-branca" (or South American silver croaker), this species is important for local subsistence fishing [13], and in recent decades, it has been introduced into the major South American basins, mainly in reservoir lakes for commercial purposes [14].…”
Observations of skeletal malformations in fish in the wild are poorly documented and need to be investigated. Here we report the occurrence of body shortening in specimens of Plagioscion squamosissimus collected in the Volta Grande do Xingu, middle Xingu River region (Pará, Brazil), during a 12-month monitoring program (2021–2022). We observed morphological anomalies in nine individuals, of which two underwent radiographic analysis, recording the fusion and compression of vertebrae in different portions of the spine. The average percentage decrease in body length resulting from the deformity was 23.8%. This is the first record of malformation in this species.
“…The species Plagioscion squamosissimus (Heckel, 1840) is a popular fish belonging to the Order Perciformes and to the Family Sciaenidae. Recently, this species has received substantial attention from scientists, mainly due to its importance as a source of animal protein and as a key species of fish (Batista et al 2012, Agostinho et al 2016, Queiroz-Sousa et al, 2018.…”
RepRoductive biology of SilveR cRoakeR plagioScion SquamoSiSSimuS (Heckel, 1840) SpecieS of fiSHeRy impoRtance in tHe loweR amazon, paRá, bRazil eRicleya mota maRinHo lima 1 *, paulo RobeRto bRaSil SantoS 2 , luiz auguSto RodRigueS feRReiRa 3 , keid
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