ABSTRACT
Leptocharias smithii has been poorly explored in anatomical terms. This species bears a mosaic of morphological characters and is considered to represent an intermediate condition between other carcharhiniform clades. In the present paper, the anatomy of the appendicular skeleton of the species is thoroughly investigated and compared with other representatives of the order Carcharhiniformes. Leptocharias bears exclusive characteristics, such as the visible separation of the pro- and mesopterygia but it also has an aplesodic pectoral fin, a condition shared with carcharhiniforms placed at the base of the phylogenetic tree and at the same time a chevron-shaped coracoid bar, a condition characteristic of charcharhiniforms placed at the apex of the phylogenetic tree. Additionally, in an attempt to understand the evolution of its appendicular skeleton and of other carcharhiniforms, 20 characters of the paired fins and girdles are explored and discussed in light of two recent phylogenetic hypotheses. Most of these characters were not previously explored and support not only the monophyly of Carcharhiniformes, such as the mesopterygium overlapping the metapterygium in ventral view, but also the monophyly of the less inclusive clade Hemigaleidae + (Galeocerdonidae + (Carcharhinidae+Sphyrnidae)), such as the morphology and arrangement of the distal radials, which are pointed and spaced.
Subject(s)
Phylogeny , Sharks , Animals , Sharks/anatomy & histology , Sharks/classification , Animal Fins/anatomy & histology , Male , Female , Biological EvolutionABSTRACT
Resumo gráfico: Intervenções de esportes modificados para crianças e adolescentes com deficiência: Uma revisão de escopo.
OBJETIVO: Estabelecer o escopo da literatura sobre intervenção de esportes modificados para crianças e adolescentes com deficiência. MÉTODOS: Para esta revisão de escopo, os artigos foram selecionados e as características dos estudos foram extraídas. As intervenções de esportes modificados foram descritas quanto à sua estrutura, utilizando os itens do Template for Intervention Description and Replication (TIDieR). Os componentes do tratamento foram descritos usando a linguagem do Sistema de Especificação de Tratamento de Reabilitação. Os resultados foram analisados e validados por um grupo de profissionais, utilizando a estratégia de Envolvimento do Público e do Paciente. RESULTADOS: Doze estudos foram elegíveis para inclusão, investigando intervenções para crianças com transtorno do espectro do autismo, paralisia cerebral e outras condições. A maioria dos estudos apresentou nível de evidência moderado. Os ingredientes ativos foram o treino motor repetido relacionado com o esporte e a introdução à prática esportiva através do mecanismo de "aprendizagem pela ação". O alvo da intervenção foi a capacidade de execução das habilidades motoras grossas, e os objetivos da intervenção (resultados indiretos) foram a participação em atividades físicas e diferentes funções corporais. INTERPRETAÇÃO: As principais características e estrutura da intervenção, lacunas de pesquisa e um passoapasso para implementação clínica foram apresentados para melhorar sua compreensão. São necessárias investigações futuras sobre a eficácia das intervenções de esportes modificados com estudos de melhor qualidade, incluindo resultados de participação, e estudos com crianças não deambulantes.
ABSTRACT
AIM: To establish the scope of the literature on modified sports interventions for children and adolescents with disabilities. METHOD: For this scoping review, articles were screened and the characteristics of studies were extracted. The modified sports interventions were described in terms of their structure, using the items of the Template for Intervention Description and Replication. Components of intervention treatment were described by using the language of the Rehabilitation Treatment Specification System. Results were analysed and validated by a group of professionals, using the Public and Patient Involvement strategy. RESULTS: Twelve studies were eligible for inclusion, investigating interventions for children with autism spectrum disorder, cerebral palsy, and other conditions. Most studies presented a moderate level of evidence. Active ingredients were repeated sports-related motor training and introduction to the sport through a 'learning by action' mechanism. The intervention target was gross motor skills performance, and intervention aims (indirect outcomes) were physical activity participation and different body functions. INTERPRETATION: The inclusion of stakeholders in this review helped to validate our findings about the characteristics and structure of modified sports interventions, to identify research gaps, and to provide a step process for clinical implementation. Future investigations are warranted of the effectiveness of modified sports investigations with better quality studies, including participation outcomes and studies with non-ambulant children.
ABSTRACT
Sibert and Rubin (Reports, 4 June 2021, p. 1105) report an early Miocene extinction in pelagic sharks based on the loss of shark denticle diversity in two widely separated deep-sea sediment cores. We assert that the pattern observed is not a consequence of extinction but results from shifting species ranges induced by global current reorganization.