On two species of Periclimenaeus Borradaile, 1915 (Caridea: Palaemonidae) from colonial tunicates in the southwestern Atlantic

Luciane Augusto De Azevedo Ferreira,Sandra Vieira Paiva,Paulo P.G Pachelle

doi:10.1590/2358-2936e2020024

Luciane Augusto De Azevedo Ferreira, Sandra Vieira Paiva + Show 1 more

Open Access

https://doi.org/10.1590/2358-2936e2020024

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Abstract

Abstract Two species of the palaemonid genus Periclimenaeus Borradaile, 1915, P. ascidiarum Holthuis, 1951 and P. maxillulidens (Schmitt, 1936), are reported from the offshore Escalvada Island, Espirito Santo, Brazil. The location represents a new southernmost record for these species in the western Atlantic. Both species were found inside an undescribed tunicate species of Diplosoma, dwelling inside the circulatory channels, among the zooid clusters. Although P. ascidiarum is known to occur in tunicates, the finding of the rare P. maxillulidens inside an ascidian host represents the first record of this association. Illustrations for both species and a taxonomic key for the southwestern Atlantic Periclimenaeus are provided based on the present material and literature records.

Highlights

Composed of 83 species worldwide, Periclimenaeus Borradaile, SUBMITTED 08 October 2019 ACCEPTED 05 May 2020 PUBLISHED 03 July 20201915 is a specious genus within the Palaemonidae (Bruce, 2011; 2012a; 2012b; 2012c; 2013; 2014a; 2014b; 2014c; 2014d; De Grave and Fransen, 2011; Ďuriš et al, 2011; Ramos-Tafur and Lemaitre, 2017)
Periclimenaeus species are typically found in cryptic habitats, dwelling inside sponge and ascidian hosts, and are most abundant in shallow tropical waters (Bruce, 2013)
In Brazil, the genus was hitherto represented by only seven species: Periclimenaeus ascidiarum Holthuis, 1951, Periclimenaeus atlanticus (Rathbun, 1901), Periclimenaeus brucei Cardoso and Young, 2007, Periclimenaeus caraibicus Holthuis, 1951, Periclimenaeus crosnieri Cardoso and Young, 2007, Periclimenaeus pearsei (Schmitt, 1932), and Periclimenaeus perlatus (Boone, 1930), all restricted to the northernmost coast of the country (Cardoso and Young, 2007; Souza et al, 2011; Vieira et al, 2012)

Summary

Introduction

Composed of 83 species worldwide, Periclimenaeus Borradaile, SUBMITTED 08 October 2019 ACCEPTED 05 May 2020 PUBLISHED 03 July 20201915 is a specious genus within the Palaemonidae (Bruce, 2011; 2012a; 2012b; 2012c; 2013; 2014a; 2014b; 2014c; 2014d; De Grave and Fransen, 2011; Ďuriš et al, 2011; Ramos-Tafur and Lemaitre, 2017). During ascidian samplings in Escalvada Island (Espírito Santo, Brazil), specimens of P. ascidiarum and P. maxillulidens (Schmitt, 1936) were retrieved Western Atlantic: USA (Florida), Colombia (Cape de La Vela), Dominica, Cuba (Batabanó Gulf), Panama (Bocas del Toro) and Brazil (Maranhão, Ceará, Pernambuco, Espírito Santo) (Holthuis, 1951; Chace, 1972; Vieira et al, 2012; Pachelle et al, 2018; present study).

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