Golçalves Ferreira Camila Vitória, Abrahão Davi Lettieri Dos Santos, de Sá Alice Miranda Cardoso, Salomão Márcia Carolina, Kampmann Leonardo Giovanella, Lavrado Helena Passeri, de Castro Rodrigues Ana Paula, Tuna Fernando Augusto Pereira
Departamento de Biologia Marinha, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
Faculdade de Veterinária, Universidade Federal Fluminense, Rio de Janeiro, Brazil.
J Anat. 2025 Nov;247(5):981-987. doi: 10.1111/joa.14275. Epub 2025 May 9.
The majority of records of hyperostosis in the literature are from highly active tropical species found in shallow waters, with information about hyperostotic deep-sea fish being scarce. This study describes the occurrence of hyperostosis, a skeletal anomaly, in two specimens of channel scabbardfish Evoxymetopon taeniatus Gill, 1863, obtained from two different regions in Rio de Janeiro, Southeast Brazil. Through radiographic image analysis, the presence of hyperostosis was observed in two distinct bone regions: dorsal pterygiophores (DPT) and anal pterygiophores (APT), affecting a significant number of bones: DPT-83 of 87 (95.40%) and 40 of 85 (40.06%) and APT-55 of 55 (100%) and 23 of 54 (42.59%) for the largest and smallest collected individuals, respectively. Histological analyses of the DPT and APT affected by the condition revealed high porosity in the bone tissue, with a high number of vascular channels commonly reported during hyperostosis. This is the first report of hyperostosis in channel scabbardfish, a mesopelagic fish with rare sightings and characterized by its vertical migrations.
文献中大多数关于骨质增生的记录来自浅水中发现的高度活跃的热带物种，而关于骨质增生的深海鱼类的信息却很少。本研究描述了在从巴西东南部里约热内卢两个不同地区获得的两个长体油胡瓜鱼（Evoxymetopon taeniatus Gill，1863）标本中出现的骨质增生（一种骨骼异常）情况。通过放射影像分析，在两个不同的骨骼区域观察到了骨质增生的存在：背鳍鳍担骨（DPT）和臀鳍鳍担骨（APT），受影响的骨骼数量很多：对于收集到的最大和最小个体，分别为87个DPT中的83个（95.40%）和85个中的40个（40.06%），以及55个APT中的55个（100%）和54个中的23个（42.59%）。对受该病症影响的DPT和APT进行的组织学分析显示，骨组织中的孔隙率很高，在骨质增生过程中通常会出现大量血管通道。这是关于长体油胡瓜鱼骨质增生的首次报告，长体油胡瓜鱼是一种中上层鱼类，很少被目击到，其特点是垂直洄游。
