Scorpions from Ceará State, Brazil: Distribution and ecological comments

Abstract

Scorpions are venomous synanthropic arachnids, in 2019 they were responsible for more than 37000 cases of envenomation in the state of Ceará, Northeastern Brazil. To update the knowledge about the scorpiofauna in Ceará, a distribution list of scorpions collected/received by municipal agents of the Health Surveillance Service was performed in 165 municipalities (89%) of Ceará (2018 – 2019) and deposited in the Dr. Thomaz Corrêa Aragão Entomology Laboratory scientific collection, including species distribution maps and ecological data. This study included a total of 999 scorpions from two families (Buthidae and Bothriuridae) and eleven species. The most abundant species were: Tityus stigmurus (40.1%), Jaguajir rochae (37.2%), Bothriurus asper (8.3%) and Bothriurus rochai (6.7%), mainly inhabiting municipalities in the Caatinga biome. The first record of Tityus confluens and Tityus maranhensis in the Sobral mesoregion is herein presented, expanding the distribution of these species in Brazil.

Spatiotemporal bayesian modelling of scorpionism and its risk factors in the state of São Paulo, Brazil

“…Our analysis revealed an upward trend in the number of scorpion accidents in SP: from the spring of 2008 to 2021, the RR increased eight times. This growth trend is corroborated by studies in other states of the Brazilian southeast [33] and northeast regions [34,35]. It is unknown how much of the increase can be attributed to improvements in the notification system, but also reveals the worrisome affinity of many scorpion species for anthropically modified environments, which consequently enhanced their contact with humans [2,36].…”

“…It is unknown how much of the increase can be attributed to improvements in the notification system, but also reveals the worrisome affinity of many scorpion species for anthropically modified environments, which consequently enhanced their contact with humans [2,36]. Unplanned urban growth, indiscriminate use of natural resources, industrialization, and ecological imbalance induce the spread of some venomous species and increase the overlap between the areas used by these animals and humans [35,37]. Amado et al [36] confirmed the affinity of T. serrulatus for altered environments, as its modeled distribution was highly correlated with human population density in Brazil.…”

Aspectos Epidemiológicos e Sociais do Escorpionismo em Município do Recôncavo Baiano, Brasil

“…Estudo recente de Braga et al 45 para o Estado do Ceará, mostra que o contato homemescorpião pode ser maior em função do crescimento populacional desordenado. Contudo, o clima e o habitat podem ser fatores importantes na distribuição dos escorpiões, considerando que habitats antropizados produzem diferentes padrões dinâmicos de distribuição 46,47 , e o ambiente urbano disponibiliza água, alimento, e não abriga predadores naturais (galinhas, seriema, macacos, lagartos, etc.…”

Escorpiões do Cerrado norte tocantinense: Um breve relato e lista de animais depositados em coleção

“…É através dessas informações que é possível entender as características e peculiaridades de cada espécie, bem como compreender sua relação com o meio ambiente (Lira et al, 2020;Marcelino et al, 2021;Martins et al, 2021a). Desta forma, para atingir esse objetivo, foi necessário recorrer a bibliografias recentes e contundentes que puderam auxiliar na identificação dos animais, sendo que essas bibliografias garantiram a precisão e acurácia dos dados (Mariano et al, 2018;Guidini et al, 2020;Lisboa et al, 2020;Oliveira et al, 2020b;Borges et al, 2021;Braga et al, 2022).…”

“…Alguns dos estudos mais relevantes sobre escorpiões no Brasil incluem aqueles que abordam a distribuição geográfica das espécies (Lira et al, 2023), a composição da fauna em diferentes habitats (Pompermaier et al, 2020), os aspectos taxonômicos e filogenéticos das espécies (Braga et al, 2022), bem como os aspectos clínicos e epidemiológicos dos acidentes com escorpiões (Neves et al, 2022).…”