Inventário dos peixes ósseos depositados na coleção ictiológica Dias da Rocha (CIDRO-B) da UFC

Abstract

Biological collections are repositories of biodiversity, whether they contain whole individuals or only body parts, preserved outside their natural environment. Collections can be divided into Scientific and Didactic Collections. Scientific collections store organisms along with information that enables academic research, while didactic collections contain specimens intended for teaching purposes. The Dias da Rocha Ichthyological Collection (CIDRO), at the Federal University of Ceará (UFC), was created in the early 1960s at the Institute of Marine Sciences (Labomar - UFC), and currently has two series, CIDRO-A and CIDRO-B. Therefore, this study aimed to characterize the bony fish specimens belonging to CIDRO-B. The material was initially fixed in 10% formalin, transferred to 70% alcohol, identified using identification guides and keys, and then registered. CIDRO-B comprises 783 lots, with 5370 individuals of bony fish, distributed across 32 orders, with the most significant being Characiformes (N = 192 lots), 84 families, with Cichlidae (N = 83 lots) and the species Astyanax bimaculatus being the most representative with 28 lots. The most significant habitat was freshwater (N = 304). The most representative city was Fortaleza (N = 131) and the year with the highest number of individuals collected was 2023 (N = 131). The collection of bony fish at CIDRO-B stands out as a significant repository of ichthyological biodiversity and demonstrates CIDRO's capacity to function as a tool in taxonomic, ecological, biogeographical, and conservation studies in the regional context of Northeast Brazil, and more specifically, the state of Ceará.