Two new species of Syndesmis (Platyhelminthes, Rhabdocoela, Umagillidae) from the sea urchin Pseudechinus magellanicus (Echinodermata, Echinoidea) in the Southwestern Atlantic Ocean

In this paper, we describe two new species of Syndesmis living in Pseudechinus magellanicus in the Southwest Atlantic Ocean. The new species have a long stylet in the male reproductive system, which is different from that of the known species of the genus. Specimens of Syndesmis selknami n. sp. have...

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Autores principales: Brusa, Francisco, Montes, Martín Miguel, Marcotegui, Paula Soledad, Martorelli, Sergio Roberto
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Biología
Turbellaria
Santa Cruz (Argentina)
Parásitos
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/77929
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-77929
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Biología
Turbellaria
Santa Cruz (Argentina)
Parásitos
spellingShingle Biología
Turbellaria
Santa Cruz (Argentina)
Parásitos
Brusa, Francisco
Montes, Martín Miguel
Marcotegui, Paula Soledad
Martorelli, Sergio Roberto
Two new species of Syndesmis (Platyhelminthes, Rhabdocoela, Umagillidae) from the sea urchin Pseudechinus magellanicus (Echinodermata, Echinoidea) in the Southwestern Atlantic Ocean
topic_facet Biología
Turbellaria
Santa Cruz (Argentina)
Parásitos
description In this paper, we describe two new species of Syndesmis living in Pseudechinus magellanicus in the Southwest Atlantic Ocean. The new species have a long stylet in the male reproductive system, which is different from that of the known species of the genus. Specimens of Syndesmis selknami n. sp. have a ~220-mm-long stylet (~1/3 of the body length, 0.69 mm). This ratio is unique because only four species (Syndesmis echinorum, Syndesmis rubida, Syndesmis inconspicua and Syndesmis echiniacuti) have similar stylet lengths but are larger in body sizes (3e5 mm). Specimens of Syndesmis aonikenki n. sp. have a ~148-mm-long stylet (~1/10 of the body length, 1.11 mm). Syndesmis pallida has a similar ratio but the uterus is located posteriorly, and the filament glands are very small and located in the posterior region of the body. These are the first flatworms reported parasitizing Pseudechinus magellanicus.
format Articulo
Articulo
author Brusa, Francisco
Montes, Martín Miguel
Marcotegui, Paula Soledad
Martorelli, Sergio Roberto
author_facet Brusa, Francisco
Montes, Martín Miguel
Marcotegui, Paula Soledad
Martorelli, Sergio Roberto
author_sort Brusa, Francisco
title Two new species of Syndesmis (Platyhelminthes, Rhabdocoela, Umagillidae) from the sea urchin Pseudechinus magellanicus (Echinodermata, Echinoidea) in the Southwestern Atlantic Ocean
title_short Two new species of Syndesmis (Platyhelminthes, Rhabdocoela, Umagillidae) from the sea urchin Pseudechinus magellanicus (Echinodermata, Echinoidea) in the Southwestern Atlantic Ocean
title_full Two new species of Syndesmis (Platyhelminthes, Rhabdocoela, Umagillidae) from the sea urchin Pseudechinus magellanicus (Echinodermata, Echinoidea) in the Southwestern Atlantic Ocean
title_fullStr Two new species of Syndesmis (Platyhelminthes, Rhabdocoela, Umagillidae) from the sea urchin Pseudechinus magellanicus (Echinodermata, Echinoidea) in the Southwestern Atlantic Ocean
title_full_unstemmed Two new species of Syndesmis (Platyhelminthes, Rhabdocoela, Umagillidae) from the sea urchin Pseudechinus magellanicus (Echinodermata, Echinoidea) in the Southwestern Atlantic Ocean
title_sort two new species of syndesmis (platyhelminthes, rhabdocoela, umagillidae) from the sea urchin pseudechinus magellanicus (echinodermata, echinoidea) in the southwestern atlantic ocean
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/77929
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