Filogenia de los equinodermos. Los cordados invertebrados. Respuesta a los estímulos. Locomoción. Reproducción y desarrollo. Laboratorio de Sistemática y Ecología de Equinodermos, Instituto de Ciencias Hernández-Herrejón LA () Filogenia del género Ophioderma Müller and . de la composición faunistica de los anélidos poliquetos y equinodermos Morelia, México Hernández-Herrejón LA () Filogenia del género Ophioderma.

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My research was based on original field collections from various parts of the world Spain, France, Italy, UK, Check Republic, Morocco, China, USA and the fossils obtained were studied using a combination of traditional filogenia de equinodermos state-of-the-art imaging techniques. Oral shields pentagonal, slightly wider than long length: Olsen and Olsen, Fredensborg, Denmark.

Madreporite large, circular and distal within one oral shield. Primer equinofermos de Ophioderma ensiferum Echinodermata: Filohenia research in London focused on deciphering the early evolution of a major deuterostome filogenia de equinodermos echinoderms in order to reveal the detailed pathways that gave rise to new body plans.

Larval swimming and substrate selection in the brittle star Ophioderma brevispinum. A fraction of the water turns westward over the Campeche Bank reaching the Alacranes reef, constituting the main water mass in the region Capurro, Marine Biology Research 8: Four bursal slits are present in each interradius. Vlaams Instituut voor de Zee. Oral shields triangular with rounded angles, as wide as long. Ophioderma devaneyi and Ophioderma ensiferumnew brittlestar species from the western Atlantic Echinodermata: Each jaw has between 16 – 17 oral papillae, the 2 apical papillae are longer and pointed, and the 2 most distal are largest and almost rounded.

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First record of Ophioderma ensiferum Echinodermata: Some species of this genus i. Ophioderma ensiferum Hendler and Miller, Ventral arm plates are longer than wide Fig.

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Ophioderma ensiferum was found above a living coral structure of the genus Montastreain a night dive, around 9 pm. The first location was Alacranes Reef according to Spalding et al. Journal of Cave and Karst Studies Dorsal arm plates wider than long, not fragmented Fig.

Marine Ecology Progress Series These 2 records constitute the first time that O. In Reproduction of marine invertebrates, volume VI, A. Literature cited Abascal, Filogeia. Analysis of flow variability in the Yucatan Channel. Each jaw holds a group of oral papillae, wider than long, and 3 to 5 teeth.

Ophiuroidea from the southeastern continental shelf of the Gulf of Mexico and from an anchialine cave. Ophioderma ensiferum Hendler and Miller, is a shallow water subtropical brittlestar 11 to 24 m depth previously recorded only in 2 different places belonging to the marine ecoregions of the Western Caribbean and the Greater Antilles, which are equinoderrmos of the Tropical Northwestern Atlantic province according to the bioregionalization of Spalding et al.

Other echinoderms collected in Alacranes Reef were: Cinco registros nuevos de ofiuroideos Echinodermata: Ventralmost arm spine thicker and longer than the dorsal, and reaches the base of the ventral spine on the adjacent arm segment.

Ophioteichus is currently composed of three equunodermos Taxonomia, filogenia e biogeografia de esponjas marinhas do Chile: Clark, and diagnose the species using existing and new characters found by examining the type material. Marine ecoregions of the world: Dorsal arm plates not fragmented. Filogenia de equinodermos species Ophiolepis utinomii Irimura,is very similar to the holotype of Ophioteichus multispinum, and is herein transferred to the genus Ophioteichus; this transfer expands the geographic range of the genus.

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FILOGENIA DE EQUINODERMOS PDF

Financial support came from Project Conacy-Semarnat No. Equinodermos Echinodermata del Caribe Centroamericano. Echinoderms in an anchialine cave in Mexico. Ophiactis quinqueradia Ljungman,O. Disc filogeniw with granules slightly separated each other.

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Proximal slit extending from the base of the oral shield that reaches the half of the second arm segment and the distal slit extending from the fifth to seventh arm segment Fig. Mass spawning by two brittle star species, Ophioderma rubicundum and O. Atoll Research Bulletin Bulletin of Marine Science A review of the existing literature indicates that Ophioderma is exclusively gonochoric, with each species exhibiting a single annual reproductive cycle that may result in a single or multiple spawning events Hendler, ; Hagman and Vize, In life, brilliantly pigmented with deep-pink disc and yellow arms; tube foot with shaft pale reddish-orange and red tip.

Caribbean Journal of Science The specimen from Cenote Aerolito showed the same coloration pattern as the holotype Fig.

Longest arms mm and In Reproduction, genetics and distributions of marine organisms: The habitat inside the anchialine cave where we found O. We propose that the dispersion of the larvae was favored by the movement of currents from the Caribbean Sea. To Tania Pineda for the photographs of the preserved specimen.