New record and occurrence map of Tityus serrulatus Lutz &amp;amp; Mello, 1922 (Scorpiones, Buthidae) in the state of Rio Grande do Sul, southern Brazil

Rosa, Conrado Mario da; Abegg, Arthur Diesel; Borges, Leandro Malta; Bitencourt, Gabriela; Mare, Rocco Alfredo Di

doi:10.15560/11.1.1556

Cited by 6 publications

(5 citation statements)

References 8 publications

(10 reference statements)

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“…Tityus serrulatus is considered the most dangerous of the four and, it is distributed throughout the country. This species is typical of the dry forest environments of the Cerrado and Caatinga but can be found in many different types of natural and urban environments [45]. Historically, T. serrulatus occupied only a small portion of the Cerrado biome in Minas Gerais State, but the current wider distribution is most likely related to human colonisation stretching from the Atlantic Coast to extreme western regions [46].…”

Section: Discussionmentioning

confidence: 99%

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Vulnerable areas to accidents with scorpions in Brazil

Amado

Moura

Riul

et al. 2021

Tropical Med Int Health

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objective To identify areas that present a higher risk of exposure to accidents with scorpions in Brazil.methods We used techniques of spatial prioritisation to determine the most vulnerable localities to envenomation by four scorpion species. Our prioritisation integrated ecological niche models with health investment, antivenin availability, access to health care facilities and metrics of human impact data.results The ecological niche models indicated that three scorpion species (Tityus bahiensis, Tityus serrulatus, and Tityus stigmurus) are more associated with human population density, while T. obscurus demonstrated a strong association with temperature variations during the year. Spatial prioritisation indicated that the areas with higher risk exposure to accidents with scorpions are in northern and northeastern Brazil. Alternatively, more isolated but densely populated areas in the southeastern and central regions also emerged as a priority.conclusion Mapping areas where humans are more likely to interact with scorpions can assist in the design of efficient public health policies.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Vulnerable areas to accidents with scorpions in Brazil

Amado

Moura

Riul

et al. 2021

Tropical Med Int Health

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“…serrulatus , popularly known as “yellow scorpion.” Adult specimens typically measure 5 to 7 cm in length. As suggested by its common name, its coloration consists of pale yellow legs and pedipalps , with a darker shade of yellowish brown on the body and tip of the tail [ 70 ]. They display a serration along the dorsal face of the distal segments 3 and 4 of the tail, as small teeth, which confer the name “ serrulatus ” to the species [ 71 ] ( Fig 5 ).…”

Section: The Culprits: Tityus Scorpionsmentioning

confidence: 99%

“…The spreading of T. serrulatus could have been supported by the road network, the main transportation system used in Brazil. In fact, some reports describe the introduction of this species in nonendemic states relating them to agricultural products transported from other states [70,72,74,80,81].…”

Section: Tityus Serrulatusmentioning

confidence: 99%

Scorpion envenomation in Brazil: Current scenario and perspectives for containing an increasing health problem

et al. 2023

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Opportunistic scorpion species can colonize urban environments, establishing high-density communities that enhance the chances of human accidents. This scenario has been taking place in Brazil, in which some Tityus species have taken city centers, causing an explosion in the number of scorpion envenoming cases. The characteristics of this scorpionism epidemic in Brazil is discussed in the present work. The number of Brazilian scorpion stings has surpassed 120,000 cases in 2017, and has been maintained above this number ever since, representing a more than 3-fold increase in 10 years, which was higher than the number of cases for most of the neglected tropical diseases in the country. The escalation in scorpionism cases is even higher in some regions of Brazil. Fortunately, the proportion of mild cases has also increased in the analyzed period, as well as the number of victims seeking for medical attention within the first hour after the accident. The species Tityus serrulatus, Tityus stigmurus, Tityus bahiensis, and Tityus obscurus are traditionally accountable for most of the scorpion accidents in different regions of Brazil, but other species deserve to be closely watched. Despite scorpionism being a notable health problem in Brazil, accident prevention and pest control regarding this venomous animal have not been properly addressed by the scientific community nor by policy makers. Therefore, this review also aims to point possible fields of research that could help to contain the aggravation of the current scorpionism landscape in Brazil.

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“…While phylogenetic comparative methods are a relatively recent approach to understanding venom variation [ 26 ], studies measuring venom potencies have a rich history, with numerous standardized measures of potencies, such as LD 50 , available across species spanning the scorpion phylogeny. Here, we use this rich history to collate LD 50 potency values [ 20 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 ] and morphology measures [ 14 , 19 , 35 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 ,…”

Section: Introductionmentioning

confidence: 99%

Scorpion Species with Smaller Body Sizes and Narrower Chelae Have the Highest Venom Potency

Forde

Jacobsen

Dugon

et al. 2022

Toxins

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Scorpionism is a global health concern, with an estimation of over one million annual envenomation cases. Despite this, little is known regarding the drivers of scorpion venom potency. One widely held view is that smaller scorpions with less-developed chelae possess the most potent venoms. While this perception is often used as a guide for medical intervention, it has yet to be tested in a formal comparative framework. Here, we use a phylogenetic comparative analysis of 36 scorpion species to test whether scorpion venom potency, as measured using LD50, is related to scorpion body size and morphology. We found a positive relationship between LD50 and scorpion total length, supporting the perception that smaller scorpions possess more potent venoms. We also found that, independent of body size, scorpion species with long narrow chelae have higher venom potencies compared to species with more robust chelae. These results not only support the general perception of scorpion morphology and potency, but also the presence of an ecology trade-off with scorpions either selected for well-developed chelae or more potent venoms. Testing the patterns of venom variations in scorpions aids both our ecological understanding and our ability to address the global health burden of scorpionism.

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New record and occurrence map of Tityus serrulatus Lutz & Mello, 1922 (Scorpiones, Buthidae) in the state of Rio Grande do Sul, southern Brazil

Cited by 6 publications

References 8 publications

Vulnerable areas to accidents with scorpions in Brazil

Vulnerable areas to accidents with scorpions in Brazil

Scorpion envenomation in Brazil: Current scenario and perspectives for containing an increasing health problem

Scorpion Species with Smaller Body Sizes and Narrower Chelae Have the Highest Venom Potency

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