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| Hajdu, Eduardo; Zea, Sven; Kielman, Margriet; Peixinho, Solange. |
| Mycale escarlatei n.sp. is described from the coasts of Bahia and Rio de Janeiro in Brazil and from the Santa Marta area in Colombia. It belongs to the subgenus Aegogropila and is distinguished from other congeners in the area, by slender anisochelae-II and possession of micracanthoxeas. Mycale unguifera n.sp. is found in the Islas del Rosario and Santa Marta area in Colombia. It belongs to the subgenus Grapelia and is distinguished within this taxon, by its large and abundant sigmas. The specimen described by Carter (1886) as Pseudoesperia enigmatica, is here proposed as neotype of Grapelia australis. Furthermore, we provide a phylogenetic discussion of centrally-thickened, centrotylote-like toxas, micracanthoxeas, absence of an ectosomal skeleton and... |
| Tipo: Article / Letter to the editor |
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| Ano: 1995 |
URL: http://www.repository.naturalis.nl/record/504936 |
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| Zea, Sven; Weerdt, Wallie H. de. |
| Haliclona (Haliclona) epiphytica n.sp., a new species of seaweed-dwelling sponge of the family Chalinidae (Porifera, Demospongiae, Haplosclerida) from the Colombian Caribbean, is described. As the only member of the subgenus Haliclona (hitherto referred to as the ‘oculata’ group by De Weerdt, 1989) in the Caribbean Sea, it is distinguished from other chalinid species in this area by its regular, anisotropic, ladder-like skeleton of short and robust oxeas. |
| Tipo: Article / Letter to the editor |
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| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/504916 |
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| Ruiz, César Augusto; Zea, Sven. |
| La esponja marina Discodermia dissoluta es fuente del policétido discodermólido, un potente antitumoral que ha alcanzado fase clínica con pruebas en humanos. En Santa Marta esta especie se encuentra a menor profundidad en comparación con otras áreas del Caribe y por ello se pudieron estudiar por primera vez y por medio de buceo autónomo sus características ecológicas, abundancia y distribución. Haciendo recorridos por la base de los arrecifes (12-25 m de profundidad), se determinó que esta especie se restringe a sitios relativamente protegidos del oleaje y vive predominantemente en sustratos duros horizontales a inclinados, en general expuestos a la luz. Censos realizados a partir de círculos de 4 m de radio mostraron densidades moderadas de unos 2-5... |
| Tipo: Journal Contribution |
Palavras-chave: Sponges; Geographical distribution; Population characteristics; Caribbean. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/4433 |
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