COMPARATIVE ANATOMY OF THE EXTENSOR TENTACULI MUSCLE IN LOPHIOSILURUS ALEXANDRI STEINDACHNER, 1876 (SILURIFORMES, PSEUDOPIMELODIDAE)
"2025-02-12 10:36:07" // app/Providers/../Base/Publico/Artigo/resources/show_includes/info_artigo.blade.php
App\Base\Administrativo\Model\Artigo {#1843 // app/Providers/../Base/Publico/Artigo/resources/show_includes/info_artigo.blade.php #connection: "mysql" +table: "artigo" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:35 [ "id" => 119932 "edicao_id" => 384 "trabalho_id" => 429 "inscrito_id" => 850 "titulo" => "COMPARATIVE ANATOMY OF THE EXTENSOR TENTACULI MUSCLE IN LOPHIOSILURUS ALEXANDRI STEINDACHNER, 1876 (SILURIFORMES, PSEUDOPIMELODIDAE)" "resumo" => "Within the family Pseudopimelodidae, Lophiosilurus alexandri stands out due to morphology that differentiates it from other groups, as its broad and prognathous mouth, depressed head, dorsal fin with a short and robust spine, tiny maxillary and mentonian barbels. Unique among Siluriformes, the muscle extensor tentaculi is responsible for the movement of the maxillary barbels, which assist in food detection and ambient perception. This study aims to analyze and compare the extensor tentaculi of L. alexandri with other Siluriformes, providing data that contribute to identifying variations and possible synapomorphies. Dissections were performed on L. alexandri, and bones and cartilage were stained. The obtained results were compared with Iheringichthys labrosus, Pimelodus maculatus, P. microstoma, P. ortmanni, Bergiaria westermani, Steindachneridion scriptum, and Parapimelodus nigribarbis. The extensor tentaculi of pimelodids consists of four muscle bands, two lateral and two medial. In contrast, Lophiosilurus´s structure is reduced to only two, one lateral and one medial bands. The reduced form and the pattern of the fibers, which are perpendicular to the body axis in the lateral bands of Lophiosilurus, contrast with the analyzed Pimelodidae, which exhibit larger muscles with predominantly transverse fiber patterns. Furthermore, L. alexandri is distinct from analyzed pimelodids due to the triangular-shaped pars medialis muscle originating from a lateral ethmoid chamber. In contrast, in pimelodids, the extensor tentaculi originate from a mesethmoid chamber extending along the proximal end until it inserts into the most distal portion of the autopalatine. The more discreet shape of Lophiosilurus extensor tentaculi is likely due to its barbels not longer than those of Pimelodidae since its large mouth and well-developed mandibular muscles effectively compensate for capturing and subduing prey." "modalidade" => "Pôster (PO)" "area_tematica" => "AT 06 - Anatomia e Morfologia" "palavra_chave" => ", , , , " "idioma" => "Português" "arquivo" => "TRABALHO__EV205_MD4_ID850_TB429_07102024120824.pdf" "created_at" => "2025-02-13 11:08:16" "updated_at" => null "ativo" => 1 "autor_nome" => "RAFAEL DA SILVA MARQUES" "autor_nome_curto" => "RAFAEL MARQUES" "autor_email" => "marques.rafael@uel.br" "autor_ies" => "UNIVERSIDADE ESTADUAL DE LONDRINA (UEL)" "autor_imagem" => "" "edicao_url" => "anais-do-ebi---encontro-brasileiro-de-ictiologia" "edicao_nome" => "Anais do EBI - Encontro Brasileiro de Ictiologia" "edicao_evento" => "XXV ENCONTRO BRASILEIRO DE ICTIOLOGIA" "edicao_ano" => 2025 "edicao_pasta" => "anais/ebi/2025" "edicao_logo" => null "edicao_capa" => "67b49e4d8c758_18022025115053.png" "data_publicacao" => null "edicao_publicada_em" => "2025-02-12 10:36:07" "publicacao_id" => 116 "publicacao_nome" => "Revista EBI" "publicacao_codigo" => "978-65-5222-033-2" "tipo_codigo_id" => 2 "tipo_codigo_nome" => "ISBN" "tipo_publicacao_id" => 1 "tipo_publicacao_nome" => "ANAIS de Evento" ] #original: array:35 [ "id" => 119932 "edicao_id" => 384 "trabalho_id" => 429 "inscrito_id" => 850 "titulo" => "COMPARATIVE ANATOMY OF THE EXTENSOR TENTACULI MUSCLE IN LOPHIOSILURUS ALEXANDRI STEINDACHNER, 1876 (SILURIFORMES, PSEUDOPIMELODIDAE)" "resumo" => "Within the family Pseudopimelodidae, Lophiosilurus alexandri stands out due to morphology that differentiates it from other groups, as its broad and prognathous mouth, depressed head, dorsal fin with a short and robust spine, tiny maxillary and mentonian barbels. Unique among Siluriformes, the muscle extensor tentaculi is responsible for the movement of the maxillary barbels, which assist in food detection and ambient perception. This study aims to analyze and compare the extensor tentaculi of L. alexandri with other Siluriformes, providing data that contribute to identifying variations and possible synapomorphies. Dissections were performed on L. alexandri, and bones and cartilage were stained. The obtained results were compared with Iheringichthys labrosus, Pimelodus maculatus, P. microstoma, P. ortmanni, Bergiaria westermani, Steindachneridion scriptum, and Parapimelodus nigribarbis. The extensor tentaculi of pimelodids consists of four muscle bands, two lateral and two medial. In contrast, Lophiosilurus´s structure is reduced to only two, one lateral and one medial bands. The reduced form and the pattern of the fibers, which are perpendicular to the body axis in the lateral bands of Lophiosilurus, contrast with the analyzed Pimelodidae, which exhibit larger muscles with predominantly transverse fiber patterns. Furthermore, L. alexandri is distinct from analyzed pimelodids due to the triangular-shaped pars medialis muscle originating from a lateral ethmoid chamber. In contrast, in pimelodids, the extensor tentaculi originate from a mesethmoid chamber extending along the proximal end until it inserts into the most distal portion of the autopalatine. The more discreet shape of Lophiosilurus extensor tentaculi is likely due to its barbels not longer than those of Pimelodidae since its large mouth and well-developed mandibular muscles effectively compensate for capturing and subduing prey." "modalidade" => "Pôster (PO)" "area_tematica" => "AT 06 - Anatomia e Morfologia" "palavra_chave" => ", , , , " "idioma" => "Português" "arquivo" => "TRABALHO__EV205_MD4_ID850_TB429_07102024120824.pdf" "created_at" => "2025-02-13 11:08:16" "updated_at" => null "ativo" => 1 "autor_nome" => "RAFAEL DA SILVA MARQUES" "autor_nome_curto" => "RAFAEL MARQUES" "autor_email" => "marques.rafael@uel.br" "autor_ies" => "UNIVERSIDADE ESTADUAL DE LONDRINA (UEL)" "autor_imagem" => "" "edicao_url" => "anais-do-ebi---encontro-brasileiro-de-ictiologia" "edicao_nome" => "Anais do EBI - Encontro Brasileiro de Ictiologia" "edicao_evento" => "XXV ENCONTRO BRASILEIRO DE ICTIOLOGIA" "edicao_ano" => 2025 "edicao_pasta" => "anais/ebi/2025" "edicao_logo" => null "edicao_capa" => "67b49e4d8c758_18022025115053.png" "data_publicacao" => null "edicao_publicada_em" => "2025-02-12 10:36:07" "publicacao_id" => 116 "publicacao_nome" => "Revista EBI" "publicacao_codigo" => "978-65-5222-033-2" "tipo_codigo_id" => 2 "tipo_codigo_nome" => "ISBN" "tipo_publicacao_id" => 1 "tipo_publicacao_nome" => "ANAIS de Evento" ] #changes: [] #casts: array:14 [ "id" => "integer" "edicao_id" => "integer" "trabalho_id" => "integer" "inscrito_id" => "integer" "titulo" => "string" "resumo" => "string" "modalidade" => "string" "area_tematica" => "string" "palavra_chave" => "string" "idioma" => "string" "arquivo" => "string" "created_at" => "datetime" "updated_at" => "datetime" "ativo" => "boolean" ] #classCastCache: [] #attributeCastCache: [] #dates: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: false #hidden: [] #visible: [] +fillable: array:13 [ 0 => "edicao_id" 1 => "trabalho_id" 2 => "inscrito_id" 3 => "titulo" 4 => "resumo" 5 => "modalidade" 6 => "area_tematica" 7 => "palavra_chave" 8 => "idioma" 9 => "arquivo" 10 => "created_at" 11 => "updated_at" 12 => "ativo" ] #guarded: array:1 [ 0 => "*" ] }