Leptosynapta brasiliensis: a new species of synaptid holothurian (Echinodermata) from a sandy beach in southeastern Brazil

Freire, Carolina Arruda de Oliveira; Grohmann, Priscila Araci

doi:10.1590/S0101-81751989000400018

Abstract

A new species of synaptid holothurian, Leptosynapta brasiliensis n. sp., is described. The species shows affinities with Leptosynapta minuta (BECHER, 1906), presenting 12 simple tentacles and 12 dumb-bell shaped pieces constituting the calcareous ring; anchor ossicles exhibit a sharply bifurcate stock. All individuals were collected in Praia Vermelha, Rio de Janeiro - RJ, Brazil, in coarse sand, at a depth of some 3 m.

Leptosynapta brasiliensis: a new species of synaptid holothurian (Echinodermata) from a sandy beach in southeastern Brazil

Carolina Arruda de Oliveira Freire^I; Priscila Araci Grohmann^II

^IPresent address: Departamento de Fisiologia Geral, Instituto de Biociências, Cx. P. 11461, Universidade de São Paulo, Cidade Universitária, 05508, São Paulo, SP, Brasil. Bolsista do CNPq

^IIDepartamento de Zoologia, Instituto de Biologia, CCS-bl. A, Universidade Federal do Rio de Janeiro, Ilha do Fundão, 21941, Rio de Janeiro - RJ, Brasil. Bolsista do CNPq

ABSTRACT

A new species of synaptid holothurian, Leptosynapta brasiliensis n. sp., is described. The species shows affinities with Leptosynapta minuta (BECHER, 1906), presenting 12 simple tentacles and 12 dumb-bell shaped pieces constituting the calcareous ring; anchor ossicles exhibit a sharply bifurcate stock. All individuals were collected in Praia Vermelha, Rio de Janeiro - RJ, Brazil, in coarse sand, at a depth of some 3 m.

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ACKNOWLEDGEMENTS

The authors thank to Vera Abud Silva for the opportunity to collaborate with the "Praia Vermelha Psammofauna Project", to Dr. Gustave Cherbonnier for his examination of specimens, kind revision of the work and valuable suggestions and to Dr. John C. McNamara for a critical reading of the manuscript. This work was supported financially by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq).

CHERBONNIER, G., 1953. Recherches sur les Synaptes (Holothuries Apodes) de Roscoff. Archs Zool exp gén , 90:163-186.
CHERBONNIER, G., 1980. Description d'une espéce d'Holothurie apode, Protankyra suroitae nov. sp., et de l'Échinide irrégulier Echinocyamus elegans Mazzetti récoltés dans le sud de la mer Rouge. Bull Mus natn Hist nat, Paris, sèr 4 2:27-30.
CLARK, H.L., 1907. The apodous holothurians. A monograph of the Synaptidae and Molpadiidae. Smithson Contr Knowl, 35:1-231.
CLARK, H.L., 1924. The holothurians of the Museum of Comparative Zoology. The Synaptidae. Bull Mus comp Zool Harv, 65:457-501.
DEICHMANN, E., 1948. The holothurian fauna of South Africa. Ann Natal Mus P'mburg., 11:325-376.
ENGSTROM, N.A., 1980. Development, natural history and interstitial habits of the apodous holothurian Chiridota rotifera (Pourtales, 1851) (Echinodermata: Holothuroidea). Brenesia, 17:85-95.
HEDING, S.G., 1928. Papers from Dr. Th. Mortensen's Pacific Expedition 1914-16. x/vi. Synaptidae. Vidensk Meddr dansk naturh. Foren., 85:105-323.
MENKER. D., 1970. Lebenzyklus, Jugendentwicklung und Geschlechtsorgane von Rhabdomolgus ruber (Holothuroidea: Apoda). Mar. Biol. (Berl.), 6:167-186.
PAWSON, D.L., 1967. Protankyra gray new species and Labidoplax buskii (McIntosh) from off North Carolina (Holothuroidea; Synaptidae). Proc. Biol. Soc Wash., 80:151-156.
RAO, G.C., 1968. On Psammothuria ganapatii n. gen. sp. n., an intersticial holothurian from the beach sands of Waltair coast and its autecology. Proc. Indian Acad. Sci., 67B:201-206.

Publication Dates

Publication in this collection
11 Aug 2009
Date of issue
1989

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

[1] CHERBONNIER, G., 1953. Recherches sur les Synaptes (Holothuries Apodes) de Roscoff. Archs Zool exp gén , 90:163-186.

[2] CHERBONNIER, G., 1980. Description d'une espéce d'Holothurie apode, Protankyra suroitae nov. sp., et de l'Échinide irrégulier Echinocyamus elegans Mazzetti récoltés dans le sud de la mer Rouge. Bull Mus natn Hist nat, Paris, sèr 4 2:27-30.

[3] CLARK, H.L., 1907. The apodous holothurians. A monograph of the Synaptidae and Molpadiidae. Smithson Contr Knowl, 35:1-231.

[4] CLARK, H.L., 1924. The holothurians of the Museum of Comparative Zoology. The Synaptidae. Bull Mus comp Zool Harv, 65:457-501.

[5] DEICHMANN, E., 1948. The holothurian fauna of South Africa. Ann Natal Mus P'mburg., 11:325-376.

[6] ENGSTROM, N.A., 1980. Development, natural history and interstitial habits of the apodous holothurian Chiridota rotifera (Pourtales, 1851) (Echinodermata: Holothuroidea). Brenesia, 17:85-95.

[7] HEDING, S.G., 1928. Papers from Dr. Th. Mortensen's Pacific Expedition 1914-16. x/vi. Synaptidae. Vidensk Meddr dansk naturh. Foren., 85:105-323.

[8] MENKER. D., 1970. Lebenzyklus, Jugendentwicklung und Geschlechtsorgane von Rhabdomolgus ruber (Holothuroidea: Apoda). Mar. Biol. (Berl.), 6:167-186.

[9] PAWSON, D.L., 1967. Protankyra gray new species and Labidoplax buskii (McIntosh) from off North Carolina (Holothuroidea; Synaptidae). Proc. Biol. Soc Wash., 80:151-156.

[10] RAO, G.C., 1968. On Psammothuria ganapatii n. gen. sp. n., an intersticial holothurian from the beach sands of Waltair coast and its autecology. Proc. Indian Acad. Sci., 67B:201-206.