Results 81 to 90 of about 6,690 (202)

Análisis de la diversidad y nuevos registros de equinodermos (Echinodermata) para el Parque Nacional Revillagigedo, México

open access: yesRevista Mexicana de Biodiversidad
Compuesto por 4 islas volcánicas tropicales, el archipiélago de Revillagigedo cuenta con ecosistemas únicos y bien preservados que lo han incluido en la lista de patrimonio mundial de la UNESCO.
Ingrid Yutzil Ruiz-Nuñez   +5 more
doaj   +1 more source

A newly discovered radiation of endoparasitic gastropods and their coevolution with asteroid hosts in Antarctica

open access: yesBMC Evolutionary Biology, 2019
Background Marine invertebrates are abundant and diverse on the continental shelf in Antarctica, but little is known about their parasitic counterparts. Endoparasites are especially understudied because they often possess highly modified body plans that ...
Kara K. S. Layton   +2 more
doaj   +1 more source

NEW TRIASSIC ASTEROIDEA (ECHINODERMATA) SPECIMENS AND THEIR EVOLUTIONARY SIGNIFICANCE

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2017
The Paleozoic-Mesozoic transition saw the disappearance of asteroid stem groups and the ascent of the crown group, but late Paleozoic and Triassic asteroids are rare and transition events are poorly documented.
DANIEL B. BLAKE   +2 more
doaj   +1 more source

Una especie nueva de estrella de mar (Echinodermata: Asteroidea) de una caverna anquialina en el Caribe mexicano

open access: yesRevista Mexicana de Biodiversidad, 2010
Se describe una especie nueva de la estrella de mar del género Copidaster encontrada en un sistema de cuevas anquihalinas del Caribe, en Cozumel, México. Copidaster cavernicola n. sp. es la primera especie cavernícola de equinodermo que es descrita, y se
Francisco Alonso Solís-Marín   +1 more
doaj   +1 more source

Esteroles libres de la estrella marina echinaster sentus

open access: yesRevista Colombiana de Química, 2010
La fracción lipídica de la estrella marina Echinaster sentus se estudió para conocer su composición esterólica. Las estrellas marinas son especies de invertebrados-que pertenecen al phylumechinodermata de la clase Asteroidea.
Rosabel Segura de Correa, Carmenza Duque
doaj  

QUINODERMOS (ECHINODERMATA) DE LA COLECCIÓN DE REFERENCIA DE BENTOS COSTERO DE ECOSUR

open access: yesEcosistemas y Recursos Agropecuarios, 2014
La sección de equinodermos de la Colección de Referencia de Bentos Costero de El Colegio de la Frontera Sur (ECOSUR) contiene 924 organismos agrupados en cinco clases: Crinoidea (5), Asteroidea (18), Ophiuroidea (664), Echinoidea (184) y Holothuroidea ...
BR Trujillo-Luna, NE González-Vallejo
doaj   +1 more source

Opsin evolution in the Ambulacraria [PDF]

open access: yes, 2015
Opsins - G-protein coupled receptors involved in photoreception - have been extensively studied in the animal kingdom. The present work provides new insights into opsin-based photoreception and photoreceptor cell evolution with a first analysis of opsin ...
A. Valero-Gracia   +52 more
core   +2 more sources

BIODIVERSITY OF ECHINODERMATA IN MARSEGU ISLAND

open access: yesSriwijaya Journal of Environment, 2017
Echinoderms are key species that govern the structure and balance of communities and influence the sustainability of other organisms in different types of ecosystems in sea water.
Bijaya Latupono   +2 more
doaj   +1 more source

Abundance and Diversity of Echinoderm in Pari Island, Seribu Islands [PDF]

open access: yes, 2012
Pari Island is one of the island in the Seribu Islands region. Abundance of echinoderms in Pari Island waters has been observed since 1969. In this research, data of echinoderms was collected on March 2011 applying quadratic transect method 1 x 1 m2, as ...
Arbi, U. Y. (Ucu), Supono, S. (Supono)
core   +3 more sources

Distribution and reproduction of intertidal species of Aquilonastra and Cryptasterina (Asterinidae) from one tree reef, southern great barrier reef [PDF]

open access: yes, 2007
The Asterinidae in tropical regions includes morphospecies complexes in the genera Aquilonastra and Cryptasterina. Cryptic species in these genera have been discovered based on differences in life histories and by attention to previously poorly ...
Byrne, M., Walker, S. J.
core  

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