Sea urchin
Global regime shift dynamics of catastrophic sea urchin overgrazing
... impoverished urchin barrens. Catastrophic in nature, urchin overgrazing in a well-studied Australian system demonstrates a discontinuous regime shift, which is of particular management concern as recovery ...
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Bioerosion caused by the sea urchin Diadema mexicanum (Echinodermata: Echinoidea) at Bahía de Huatulco, Western Mexico
... Sea urchin influence on coral reef communities has been deduced and/or established after natural disturbances or experiments elsewhere in the Indo-Pacific and Caribbean (Hughes et ...
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Evaluación del nivel de los macronutrientes en dietas formuladas para el erizo morado Strongylocentrotus purpuratus y su efecto en el índice gonádico y la calidad gonadalEvaluation of the level of macronutrients in formulated diets for the purple sea urchin Strongylocentrotus purpuratus and its effects on gonadal index and gonadal quality
... Understanding the effects of nutrients in formulated diets for S. purpuratus, in particular the levels of protein, carbohydrate and lipid, will contribute to the development of an adequate sea urchin diet. Adult ...
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Importancia del sustrato y la presencia de adultos en el reclutamiento del erizo rojo Strongylocentrotus franciscanus en Baja CaliforniaImpact of substrate and the presence of adults on recruitment of the red sea urchin Strongylocentrotus franciscanus in Baja California
... Our findings indicate that refuge substrate, specifically the percentage of crevices, is an important factor contributing to explain the variation in recruit density observed in the Baja California red sea urchin ...
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Estructura poblacional del erizo morado Strongylocentrotus purpurtus a lo largo de la costa del Pacífico de Baja California, MéxicoPopulation structure of the purple sea urchin Strongylocentrotus purpuratus along the pacific coast of Baja California Penninsula, Mexico
... sea urchin, Strongylocentrotus purpuratus, is distributed from Alaska to Baja California Sur, ...sea urchin and they suggest that this structure was the result of the effect of the physical and biological ...
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Scales of detection and escape of the sea urchin Tetrapygus niger in interactions with the predatory sun star Heliaster helianthus
... Predators can simultaneously have lethal (consumption) and non-lethal (modification of traits) effects on their prey. Prey escape or fl eeing from potential predators is a common form of a non-lethal predator effect. The ...
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Population characteristics of the sea urchin Diadema antillarum in La Parguera, Puerto Rico, 17 years after the mass mortality event
... MATERIALS AND METHODS Study area: The study was conducted at the Natural Reserve of La Parguera, on the southwest coast of Puerto Rico (Fig. 1) during 2001. The area has the most extensive coral reef formations in Puerto ...
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Demography and fishery of the sea urchin Loxechinus albus (Echinodermata: Echinidae) in the south austral Chile region [Spanish]
... sea urchin Loxechinus albus (Echinodermata: Echinidae) in south-austral Chile ...edible urchin Loxechinus albus is collected by 1 200 artisanal fishermen, of whom 450 are ...
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Características poblacionales del erizo morado Strongylocentrotus purpuratus en el borde de mantos de sargazo en la Península de Baja California, MéxicoPopulation dynamics of the purple sea urchin (Strongylocentrotus purpuratus) in the thershold between a kelp bed and an urchin barren in the Baja California peninsula.
... sea urchin (Strongylocentrotus purpuratus) is the principal grazer that structure the algal communities off the coast of the Baja California ...sea urchin population characteristics we conducted subtidal ...
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Juvenile production of the red sea urchin Strongylocentrotus franciscanus (Echinodermata: Echinoidea) in Baja California, Mexico [Spanish]
... sea urchin Strongylocentrotus franciscanus (Echinodermata: Echinoidea) in Baja California, ...sea urchin Strongylocentrotus franciscanus (Agassiz 1863) is harvested commercially in Baja California, Mexico, ...
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Seagrass meadow structure alters interactions between the sea urchin Paracentrotus lividus and its predators
... ABSTRACT: Predation on sea urchins, which are important structuring agents in seagrass communi- ties, can be modulated by habitat structural complexity. Here we examine the importance of meadow structure (leaf length and ...
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Dinámica de la población de erizo rojo Strongylocentrotus franciscanus sujeta a extracción comercial en Baja CaliforniaStock assessment of the red sea urchin Strongylocentrotus franciscanus in Baja California
... III Captura y esfuerzo promedio para cada zona de pesca de erizo rojo en Baja California.. 31 IV Rendimiento, producción de gónada y clasificación por.[r] ...
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Distribution patterns and bioerosion of the sea urchin Centrostephanus coronatus (Diadematoida: Diadematidae), at the reef of Playa Blanca, Colombian Pacific [Spanish]
... Abundancia y distribución de las especies de erizos: Los censos de erizos se realizaron en los meses de julio, septiembre y diciembre de 1997 y marzo de 1998, con la ayuda de equipo SCUB[r] ...
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Utilización de carbón orgánico disuelto y tasa metabólica en postlarvas de erizo blanco Lytechinus pictus (Verrill) (Echinodermata: Echinoidea)The used of dissolved organic carbon and the metabolic rate for the sea urchin postlarvae Lytechinus pictus
... Valores promedio de los cambios en la relacién de Carbon:Proteina, obtenida en cultivos de postlarva de erizo blanco Lytechinus pictus, a partir de la metamorfosis, los dias 0 como larva[r] ...
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Variación en la madurez gonádica del erizo morado (Strongylocentrotus purpuratus), en un gradiente latitudinal del Pacífico Nororiental (Otoño, 1998)GONAD MATURITY VARIATIONS OF THE PURPLE SEA URCHIN (Strongylncentratus purpuratus) IN A LATITUDINAL GRADIENT OF THE NORTHEASTERN PACIFIC (AUTUMN, 1998).
... desviación estandar de ± 8.6 con un coeflciente de variación (C.. Porcentajes del desarrollo gonadal en el erizo morado, Strorzgylocentratus purpuratus, colectados en un gradiente latitud[r] ...
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Distribución y abundancia del gasterópodo ectoparásito, Sabinella shaskyi Warén (Eulimidae), en Eucidaris galapagensis (Doderlein) (Echinoidea) en la región centro del archipiélago de Galápagos, EcuadorDistribution and abundance of the parasitic gastropod, Sabinella shaskyi Warén (eulimidae) in the Sea Urchin, Eucidaris galapagensis (Doderlein) in the islands of the center of the archipelago of Galapagos, Ecuador
... Palabras clave : Eucidaris galapagensis, Sabinella shaskyi , prevalencia de infección, intensidad media de infección, ectoparásito, cangrejos, depredadores, Islas Galápa[r] ...
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Full PDF
... sea urchin Centrostephanus coronatus, a member of the Diadematidae family, avoids consuming crus- tose coralline algae when eating other algae, favoring development of coralline ...sea urchin in search of ...
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Estado de Impacto de diadema mexicanum A. Agassiz, 1863 (Echinoidea)en los arrecifes coralinos del Pacífico Tropical Oriental
... Historical behavior of the density ind m-2 and bioerosion kg m-2 y-1 of the sea urchin Diadema mexicanum, coral bioacretion kg m-2 y-1 and reef balance in A Cocos Island, B Caño Island, [r] ...
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Reproductive cycle of Lytechinus variegatus (Echinoidea: Toxopneustidae) in the south of Margarita Island, Venezuela [Spanish]
... sea urchin Lytechinus variegatus is of some commercial importance on the Southern coast of Margarita Island (Venezuela), where artisan women fishers process and sell the ...
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García, Miguel Ángel (2010): «Sin que la muerte al ojo estorbo sea». Nueva lectura crítica de Francisco de Aldana, Mérida: Editora Regional de Extremadura.
... Hecha esta prevención, hay que decir que Miguel Ángel García (profesor titular de Literatura Española de la Universidad de Granada) ha realizado una labor encomiable, analizando meticu[r] ...
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