Chromosomal Study on Selected Small Araneomorph Spiders from Brazil, Including the First Records in Palpimanidae and Theridiosomatidae (Araneae, Araneomorphae).

Débora Duarte Dutra, Antônio Domingos Brescovit, Douglas Araujo

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Article in Zoological studies, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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Débora Duarte DutraLaboratório de Citotaxonomia e Evolução Cromossômica Animal, Programa de Pós-Graduação em Biologia Animal, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Avenida Costa e Silva, s/n, Campo Grande, Mato Grosso do Sul, Brazil, Caixa Postal 549, CEP 79070-900. E-mail: d.araujo@ufms.br (Araujo); deborad.dutra98@gmail.com (Dutra).

Antônio Domingos BrescovitLaboratório de Coleções Zoológicas, Instituto Butantan, Av. Vital Brasil, 1500, São Paulo, São Paulo, Brazil, CEP 05503-900. E-mail: antonio.brescovit@butantan.gov.br (Brescovit).

Douglas AraujoLaboratório de Citotaxonomia e Evolução Cromossômica Animal, Programa de Pós-Graduação em Biologia Animal, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Avenida Costa e Silva, s/n, Campo Grande, Mato Grosso do Sul, Brazil, Caixa Postal 549, CEP 79070-900. E-mail: d.araujo@ufms.br (Araujo); deborad.dutra98@gmail.com (Dutra).

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Among the 50,474 spider species, only 849 have chromosomal data available in the literature. Fifty spider families remain unknown from a cytogenetic perspective. The aim of this study was to analyze chromosomally selected araneomorph spiders from Brazil, to contribute to the cytotaxonomy and chromosome evolution of this group. The karyotypes of 12 species belonging to families Corinnidae, Linyphiidae, Oonopidae, Palpimanidae, Theridiidae, Theridiosomatidae, Trachelidae, and Zodariidae were analyzed, including the first chromosomal record for the first two families. Specimens (with the abdomen content partially exposed by perforation) were subjected to colchicine, hypotonization, and fixation. In most cases, the total content of the abdomen was used to prepare slides by spreading of cell suspension and subsequent Giemsa staining. The results were as follows:

Indexed as

Diploid numberMeiosisMitosisSex chromosome system

Identifiers

PMID37941799

DOI10.6620/ZS.2023.62-42

PMCPMC10628548

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