Scorpions from Mata do Buraquinho, João Pessoa, Paraíba, Brazil, with ecological notes on a population of Ananteris mauryi Lourenço (Scorpiones, Buthidae)

Dias, Sidclay C.; Cândido, Denise M.; Brescovit, Antônio D.

doi:10.1590/s0101-81752006000300014

Cited by 36 publications

(14 citation statements)

References 9 publications

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“…Soil type, topography, hydrology, soil humidity, food resources, and especially temperature and precipitation (Polis ; Dias et al. ; Yamaguti & Pinto‐da‐Rocha ) have been shown to affect scorpion activity in arid region ecosystems. Temperature profoundly affects many processes, including growth (Angilletta et al.…”

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confidence: 99%

“…Daily and seasonal patterns of scorpion activity are affected by both biological factors (e.g., the presence of predators, prey, or potential mates) and environmental factors (Polis 1990;Hoshino et al 2006). Soil type, topography, hydrology, soil humidity, food resources, and especially temperature and precipitation (Polis 1990;Dias et al 2006;Yamaguti & Pinto-da-Rocha 2006) have been shown to affect scorpion activity in arid region ecosystems. Temperature profoundly affects many processes, including growth (Angilletta et al 2004), locomotor performance (Forsman 1999), and surface activity (Bradley 1988).…”

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confidence: 99%

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Relationship between environmental variables and surface activity of scorpions in the Arid Chaco ecoregion of Argentina

Nime

Casanoves

Vrech

et al. 2013

Invertebrate Biology

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Many environmental factors may influence the activity of scorpions in arid ecosystems. In this study, we examined the effects of such factors on scorpion activity at a mature and a secondary forest site in the Chancaní Reserve (Arid Chaco ecoregion in Córdoba, Argentina). Scorpions were collected using pitfall traps, and their nocturnal activity was observed by means of UV light during 14 nights. Temperature, air humidity, atmospheric pressure, and wind velocity were measured, and the percentage of visible moon was estimated. A total of 440 scorpions, representing seven species belonging to two families (Bothriuridae and Buthidae), were observed in the study area. Brachistosternus ferrugineus was the species most commonly observed using both methods. Mature and secondary forest shared slightly more than 50% of species. Surface activity of scorpions observed with the two methods differed significantly between the two areas. Surface activity of all scorpions and of B. ferrugineus were negatively related to the phase of the moon and positively related to air temperature. Physical factors thus have important effects on scorpion activity.

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confidence: 99%

Relationship between environmental variables and surface activity of scorpions in the Arid Chaco ecoregion of Argentina

Nime

Casanoves

Vrech

et al. 2013

Invertebrate Biology

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“…For example, in a 24 month study performed in a caatinga fragment, Araújo et al (2010) recorded only 104 individuals of four species, all of which are reported here. Also, Dias et al (2006) reported only 72 specimens belonging to four species in an urban rainforest fragment in Northeastern Brazil.…”

Section: Resultsmentioning

confidence: 99%

Scorpion diversity in two types of seasonally dry tropical forest in the semi-arid region of Northeastern Brazil

2013

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Knowledge on arthropod assemblages in the Brazilian semideciduous dry forest (caatinga) is scarce, despite the increasing exposure to degradation due to human activities such as logging and intensive agriculture. We performed a short-term survey on the diversity of scorpions in two types of caatinga (hipoxerophytic and hiperxerophytic) in Pernambuco State, Northeastern Brazil. A combination of active collection and pitfall traps was used to sample soil scorpions. Six species belonging to two families were registered: Bothriurus asper, Bothriurus rochai (Bothriuridae), Tityus stigmurus, Tityus pusillus, Rhopalurus rochai and Ananteris franckei (Buthidae). There was no significant difference in the richness and the abundance of scorpions in the two types of caatinga. Bothriurus asper was the most abundant species in both environments. Regarding constancy, all species were classified as accidental. Resumo: O conhecimento sobre assembleias de artrópodos na floresta seca semidecídua brasileira (caatinga) é escasso apesar de sua crescente exposição à degradação devido a atividades humanas como agricultura intensiva e desmatamento. Foi realizada uma pesquisa de curta duração sobre a diversidade de escorpiões em dois tipos de caatinga (hipoxerófila e hiperxerófila) no Estado de Pernambuco, Nordeste do Brasil. Uma combinação de coleta ativa e armadilhas de queda foi usada para amostrar os escorpiões de solo. Seis espécies pertencentes a duas famílias foram registradas: Bothriurus asper, Bothriurus rochai (Bothriuridae), Tityus stigmurus, Tityus pusillus, Rhopalurus rochai e Ananteris franckei (Buthidae). Não houve diferença significativa na riqueza e abundância de escorpiões nos dois tipos de caatinga. Bothriurus asper foi a espécie mais abundante em ambos os ambientes. Quanto à constância, todas as espécies foram classificadas como acidentais. Palavras-chave: Arachnida, caatinga, conservação, Pernambuco, Scorpiones. In this context, we performed a short-term inventory on scorpion diversity in forest fragments in the caatinga. Specifically we aimed to: i) compare the diversity of species in forest fragments with different levels of aridness, vegetation cover and proximity to human settlements; and ii) infer about the presence of medically important scorpions and the conservation status of local species. We tested the hypothesis that the scorpion assemblage would differ in the two types of caatinga due to differences in biotic characteristics such as relative humidity, overall temperature and rainfall pattern. Material and MethodsThis study was performed in two areas in the State of Pernambuco, Northeastern Brazil (Figure 1) differentiated mostly by size, vegetation cover, rainfall pattern and land use, and separated from each other by approximately 275 km. The fragment of hipoxerophytic caatinga (40 ha, 554 m of altitude) is located ca. 5 km from the municipality of Caruaru (8°15'S; 35°58'W, pop. 325,000), where services and industries are the main economic activities. It is characterized by mean temperature of...

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“…We installed the drift fences close to the ground to drive the local fauna towards the traps and increase the capture sampling (Ellis & Bedward, ). Pitfalls are widely used for sampling scorpions and harvestmen in taxonomic and ecological studies, including as the only sampling method (Dias et al., ; Freire & Motta, ). These traps have made it possible to test relevant ecological hypotheses in tropical forest environments (Lo‐Man‐Hung, Gardner, Ribeiro, Barlow, & Bonaldo, ; Uehara‐Prado et al., ).…”

Section: Methodsmentioning

confidence: 99%

“…We chose harvestmen (Arachnida: Opiliones) and scorpions (Arachnida: Scorpiones) to evaluate the three methods for the following reasons: (1) detailed ecophysiological or behavioural data about the species are rare, and if any of these investigated models based on distribution information is adequate, these arachnids have its potential for use in ecological studies improved (2) species have different range sizes, occurrence patterns in biomes and specialization in habitat use on a local scale (Bragagnolo, Nogueira, Pinto‐da‐Rocha, & Pardini, ; Dias, Candido, & Brescovit, ; Kury, ; Lira & DeSouza, ; Uehara‐Prado et al., ), which allows for important variation in the investigated variables; and (3) their taxonomy is well known (Lourenço, ; Pinto‐da‐Rocha, Machado, & Giribet, ; Porto, Brazil, & Souza, ), which allows for specific determinations to be consistent with the species names used in the literature.…”

Section: Introductionmentioning

confidence: 99%

Regional distribution patterns can predict the local habitat specialization of arachnids in heterogeneous landscapes of the Atlantic Forest

Porto

Pinto‐da‐Rocha²,

Rocha

2017

Diversity and Distributions

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Aim This study formally evaluates the ability of three models to use geographical data on species distribution to predict the habitat use patterns of species in heterogeneous landscapes. Location Species and habitats in the Brazilian Atlantic Rain Forest were investigated. Methods Based on empirical data on harvestmen and scorpions, we estimated the strength of species association with preferred habitat and classified them as habitat generalists or habitat specialists. We compared these empirical results with predictions made using data on species range size (model 1), species occurrence in biomes (model 2) and species occurrence in habitats within the biomes (model 3). Results We used 1,278 records of eight harvestman and two scorpion species that had specific determination and enough sampling numbers to allow safe identification of habitat specialization. We observed the following: (1) the extension of species occurrence did not influence the strength of species–habitat association (estimated by IndVal), which led us to reject model 1; (2) species habitat specialization derived from occurrences in biomes was 60% coincident with the classification derived from empirical data. This value is not different enough from the value expected by chance for these data, which also led us to reject model 2; and (3) species classification derived from secondary data about the habitats used had a significant coincidence of 80% with the empirical classification, which led us to accept model 3. Main conclusions For correct classification of species habitat specialization using secondary distributional data, we recommend that future studies consider using the most accurate information available on the habitats used by species. Especially for megadiverse and understudied groups, information about habitats used is not easy to obtain, so it is important for researchers and institutions to register and disseminate this information, which could support many other studies.

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Scorpions from Mata do Buraquinho, João Pessoa, Paraíba, Brazil, with ecological notes on a population of Ananteris mauryi Lourenço (Scorpiones, Buthidae)

Cited by 36 publications

References 9 publications

Relationship between environmental variables and surface activity of scorpions in the Arid Chaco ecoregion of Argentina

Relationship between environmental variables and surface activity of scorpions in the Arid Chaco ecoregion of Argentina

Scorpion diversity in two types of seasonally dry tropical forest in the semi-arid region of Northeastern Brazil

Regional distribution patterns can predict the local habitat specialization of arachnids in heterogeneous landscapes of the Atlantic Forest

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