High infestation and phylogenetic position of Epistylis sp. (Ciliophora, Peritrichia) on Aegla serrana Buckup &amp; Rossi (Crustacea, Anomura) from southern Brazil

High infestations of epibiont ciliates on vertebrates or invertebrates are normally related to aquaculture tanks or similar environments, and the importance of this relationship in natural habitats is often disregarded. Here, we describe the first record of high infestation of ciliates on Aegla serrana in South America and conduct a brief morphological and phylogenetic characterization of these ciliates. Our findings confirm that cases of high infestation of ciliates on metazoans can indeed occur in natural environments.

Key words
Basibiont; Ciliates; Crustaceans; Epibiosis; Neotropical area

Authorship

PEDRO M. DE SOUZA

Research

Paper Conception

Literature Review

Methodology

Data Collection

Data Analysis and Interpretation

Paper Writing

Critical Revision

Approval of the Final Article

Universidade Federal de Juiz de Fora, Laboratório de Protozoologia, Programa de Pós-graduação em Biodiversidade e Conservação da Natureza, Rua Jóse Lourenço Kelmer Street, s/n, São Pedro, 36036-900 Juiz de Fora, MG, BrazilUniversidade Federal de Juiz de ForaBrazilJuiz de Fora, MG, BrazilUniversidade Federal de Juiz de Fora, Laboratório de Protozoologia, Programa de Pós-graduação em Biodiversidade e Conservação da Natureza, Rua Jóse Lourenço Kelmer Street, s/n, São Pedro, 36036-900 Juiz de Fora, MG, Brazil

https://orcid.org/0000-0003-0224-9099

ROBERTO JÚNIO P. DIAS

Research

Paper Conception

Literature Review

Methodology

Data Collection

Data Analysis and Interpretation

Paper Writing

Critical Revision

Approval of the Final Article

https://orcid.org/0000-0002-2404-4337

ARTHUR LOURES

Data Collection

Data Analysis and Interpretation

Approval of the Final Article

https://orcid.org/0009-0000-0741-0262

MARIANA F. ROSSI

Paper Conception

Data Analysis and Interpretation

Critical Revision

Approval of the Final Article

https://orcid.org/0000-0001-7573-5544

JOSÉ FELIPE R. AMATO

Methodology

Data Collection

Data Analysis and Interpretation

Universidade Federal do Rio Grande do Sul, Departamento de Zoologia, Instituto de Biociências, Bento Gonçalves Avenue, 9500, Building 43435, Agronomia, 91501-970 Porto Alegre, RS, BrazilUniversidade Federal do Rio Grande do SulBrazilPorto Alegre, RS, BrazilUniversidade Federal do Rio Grande do Sul, Departamento de Zoologia, Instituto de Biociências, Bento Gonçalves Avenue, 9500, Building 43435, Agronomia, 91501-970 Porto Alegre, RS, Brazil

†In Memoriam

MARTA D’AGOSTO

Critical Revisions

Approval of the Final Article

https://orcid.org/0000-0003-3654-3528

Correspondence to: Pedro Mendes de Souza E-mail: pedromsouza0@gmail.com

†In Memoriam

SCIMAGO INSTITUTIONS RANKINGS

Figures

Figures (2)

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Figure 1
Peritrich ciliate Epistylis sp. colonizing crustaceans of the species Aegla serrana. a: Colonies of Epistylis sp. attached to A. serrana (high infestation). b-d: Epistylis sp. fixed in alcohol, with details of zooids (b), colony (c) and stalk (d). e-g: Ciliary pattern after protargol impregnation, showing peniculi P1, P2 and P3. Ma = Macronucleus; Mi= Micronucleus; P1= Polykinety 1; P2= Polykinety 2; P3= Polykinety 3. Reference bar length for figures: 1a = 1 cm; 1b = 35 μm; 1c = 70 μm: 1d = 30 μm; 1e, f = 10 μm; 1g = 5 μm.

Thumbnail

Figure 2
Phylogenetic tree based on Maximum likelihood method of peritrich ciliates (Ciliophora, Oligohymenophora, Peritrichia) based on 18S rDNA data. Other oligohymenophorids were chosen as out-groups. The gray circle indicates nodes with bootstrap values bigger than 70. The scale bar corresponds to 12 substitutions per 100 nucleotide positions. Clade where Epistylis sp. from Aegla serrana is positioned in evidence, Clade 1. Families colored with different colors.

Figure 1 Peritrich ciliate Epistylis sp. colonizing crustaceans of the species Aegla serrana. a: Colonies of Epistylis sp. attached to A. serrana (high infestation). b-d: Epistylis sp. fixed in alcohol, with details of zooids (b), colony (c) and stalk (d). e-g: Ciliary pattern after protargol impregnation, showing peniculi P1, P2 and P3. Ma = Macronucleus; Mi= Micronucleus; P1= Polykinety 1; P2= Polykinety 2; P3= Polykinety 3. Reference bar length for figures: 1a = 1 cm; 1b = 35 μm; 1c = 70 μm: 1d = 30 μm; 1e, f = 10 μm; 1g = 5 μm.

Figure 2 Phylogenetic tree based on Maximum likelihood method of peritrich ciliates (Ciliophora, Oligohymenophora, Peritrichia) based on 18S rDNA data. Other oligohymenophorids were chosen as out-groups. The gray circle indicates nodes with bootstrap values bigger than 70. The scale bar corresponds to 12 substitutions per 100 nucleotide positions. Clade where Epistylis sp. from Aegla serrana is positioned in evidence, Clade 1. Families colored with different colors.

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High infestation and phylogenetic position of Epistylis sp. (Ciliophora, Peritrichia) on Aegla serrana Buckup & Rossi (Crustacea, Anomura) from southern Brazil

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[1] Correspondence to: Pedro Mendes de Souza E-mail: pedromsouza0@gmail.com