The Spider Subfamily Amaurobioidinae (Araneae, Anyphaenidae): A Phylogenetic Revision at the Generic Level

Ramı́rez, Martı́n J.

doi:10.1206/0003-0090(2003)277<0001:tssaaa>2.0.co;2

Cited by 85 publications

(137 citation statements)

References 48 publications

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“…This fact agrees with the study area environment, where is regularly flooded. In OH, the majority of families were Anyphaenidae and Salticidae, most of its species are active and fast hunters, inhabit preferably the arboreal foliage and are abundant and diverse in most ecosystems (Jackson and Pollard 1996, Ramírez 2003). …”

Section: Discussionmentioning

confidence: 99%

The spider fauna from Uruguay River islands: understanding its role in a biological corridor

Laborda¹,

de²,

Pérez‐Miles³

et al. 2018

BDJ

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Biological corridors are connections which link habitats in a regional scale, allowing the gene flow between populations. The Uruguay River comprises riverside and insular riparian forests along subtropical to temperate zones passing through different biogeographic provinces. The aim of this study was to characterise the spider fauna from the Uruguay River islands highlighting their connection role for the spider community of riparian forest. Spiders were studied from surveys in a fluvial island of the southern course of the river with nine campaigns being carried out from September 2007 to September 2009. Three complementary collecting methods were used: G-Vac, night hand collecting and pitfall traps. A total of 58 samples were taken in each campaign. A total of 33 families, 145 species/morphospecies and 8 guilds were registered. Theridiidae and space web weavers showed the highest abundance and species richness. Web weavers were predominant in the spider community evidencing the importance of the forest vegetation heterogeneity in spider diversity. Fifteen species have been recorded for the first time for Uruguay. Additional data of previous surveys in the northern islands of the river were analysed and compared. Several species confirm the role of the Uruguay River as a biological corridor from the upper to lower course of the river. The riparian forests from the islands constitute a southernmost intromission of Paranaense biota between Chaco and Pampa regions along the river. The results obtained are an important input for the conservation of these areas. Knowing the biodiversity, as well as its dynamics and the flow of biota that exists in these environments, would allow planning the management from a regional point of view.

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Section: Discussionmentioning

confidence: 99%

The spider fauna from Uruguay River islands: understanding its role in a biological corridor

Laborda¹,

de²,

Pérez‐Miles³

et al. 2018

BDJ

View full text Add to dashboard Cite

show abstract

“…The merges were sometimes needed for characters that were correctly extracted. For example, length of abdomen and length of opisthosoma were distinct characters correctly extracted from the original description, but for the specific use of the matrix in [44–46], the spider experts considered them as equivalent characters (note: opisthosoma and abdomen were not treated as synonyms in the Spider Ontology [53]). This phenomenon confirms our design rationale for the merge operation in the matrix review interface.…”

Section: Discussionmentioning

confidence: 99%

“…The gold standard matrix was derived from a matrix initially composed in Ramírez [44] and successively enriched/used in Aisen and Ramírez [45] and Labarque et al [46]. This expert-curated matrix contained 234 descriptions of exemplars (an exemplar is a male or a female of a given species) of 122 species (not all species have both exemplars known) and 21 characters.…”

Section: Methodsmentioning

confidence: 99%

“…The spider work is an appropriate case study for three reasons. First, the gold standard matrix has been manually curated by experts from the same set of descriptions prior to this study and is used in actual biological research [44–46]. Second, the spider work provides a relatively straightforward numerical measurement extraction task that allows us to focus the discussion on a set of common issues with automated character extraction, leaving the challenges of matrix making with categorical characters for a future paper.…”

Section: Introductionmentioning

confidence: 99%

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Introducing Explorer of Taxon Concepts with a case study on spider measurement matrix building

et al. 2016

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BackgroundTaxonomic descriptions are traditionally composed in natural language and published in a format that cannot be directly used by computers. The Exploring Taxon Concepts (ETC) project has been developing a set of web-based software tools that convert morphological descriptions published in telegraphic style to character data that can be reused and repurposed. This paper introduces the first semi-automated pipeline, to our knowledge, that converts morphological descriptions into taxon-character matrices to support systematics and evolutionary biology research. We then demonstrate and evaluate the use of the ETC Input Creation - Text Capture - Matrix Generation pipeline to generate body part measurement matrices from a set of 188 spider morphological descriptions and report the findings.ResultsFrom the given set of spider taxonomic publications, two versions of input (original and normalized) were generated and used by the ETC Text Capture and ETC Matrix Generation tools. The tools produced two corresponding spider body part measurement matrices, and the matrix from the normalized input was found to be much more similar to a gold standard matrix hand-curated by the scientist co-authors. Special conventions utilized in the original descriptions (e.g., the omission of measurement units) were attributed to the lower performance of using the original input. The results show that simple normalization of the description text greatly increased the quality of the machine-generated matrix and reduced edit effort. The machine-generated matrix also helped identify issues in the gold standard matrix.ConclusionsETC Text Capture and ETC Matrix Generation are low-barrier and effective tools for extracting measurement values from spider taxonomic descriptions and are more effective when the descriptions are self-contained. Special conventions that make the description text less self-contained challenge automated extraction of data from biodiversity descriptions and hinder the automated reuse of the published knowledge. The tools will be updated to support new requirements revealed in this case study.Electronic supplementary materialThe online version of this article (doi:10.1186/s12859-016-1352-7) contains supplementary material, which is available to authorized users.

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“…Apesar de não haver um valor padrão de k, e sua escolha parecer arbitrária entre cada autor, ainda é preferível valores baixos, principalmente entre k=1 e k=10 (Goloboff, 1993;Goloboff et al, 2008;Ramírez, 2003;Agnarsson, 2004;Arnedo et al, 2009;Frick et al, 2010;Mendes, 2011;Durán-Barrón et al, 2013;Gavish-Regev et al, 2013;Frick & Scharff, 2013). No entanto, neste estudo, para explorar os resultados desses valores de k, e tentar obter variados parâmetros para testar a estabilidade dos clados, foram estipulados para constante k=1- 15,20,25,30,35,40,45, 50 e 100.…”

Section: Análise Cladísticaunclassified

Revisão e análise cladística das espécies do gênero Moyosi Miller, 2007 (Araneae, Linyphiidae, Erigoninae)

Lemos¹

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The Spider Subfamily Amaurobioidinae (Araneae, Anyphaenidae): A Phylogenetic Revision at the Generic Level

Cited by 85 publications

References 48 publications

The spider fauna from Uruguay River islands: understanding its role in a biological corridor

The spider fauna from Uruguay River islands: understanding its role in a biological corridor

Introducing Explorer of Taxon Concepts with a case study on spider measurement matrix building

Revisão e análise cladística das espécies do gênero Moyosi Miller, 2007 (Araneae, Linyphiidae, Erigoninae)

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