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VERTICAL AND HORIZONTAL MOVEMENTS OF THE SCALLOPED HAMMERHEAD SHARK (SPHYRNA LEWINI) AROUND MALPELO AND COCOS ISLANDS (TROPICAL EASTERN PACIFIC) USING SATELLITE TELEMETRY Boletín de Investigaciones
Bessudo,Sandra; Soler,Germán A.; Klimley,Peter A.; Ketchum,James; Arauz,Randall; Hearn,Alex; Guzmán,Adriana; Calmettes,Beatriz.
Understanding distribution ranges and the daily movement patterns of pelagic fishes are key aspects for the establishment and planning of protected areas for their conservation. In this study the vertical and horizontal movements of scalloped hammerhead sharks, Sphyrna lewini, were recorded in Malpelo and Cocos Island using satellite telemetry. Nine sharks were tagged with satellite transmitters during March 2006, 2007 and 2008 at Malpelo Island, and three hammerhead sharks were tagged at Cocos Island in June 2008. The sharks moved between islands in the Tropical Eastern Pacific and made regional movements from Malpelo to the south of Cocos and around the Malpelo ridge. When away from the island, sharks made infrequent nocturnal short dives down to 1000 m...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Satellite telemetry; Vertical and horizontal movements; Sphyrna lewini; Malpelo; Cocos.
Ano: 2011 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612011000300005
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DIVERSIDAD, ABUNDANCIA Y AMENAZAS DE LOS OCTOCORALES DE LA ISLA MALPELO, PACÍFICO ORIENTAL TROPICAL, COLOMBIA Boletín de Investigaciones
Sánchez,Juan A.; Gómez,Carlos E.; Escobar,Dairo; Dueñas,Luisa F..
Durante expediciones a la isla Malpelo en 2009 y 2010, se exploró la diversidad, abundancia y estado de los octocorales. Se encontraron siete especies de octocorales: Leptogorgia alba, Pacifigorgia cf. lacerata, Pacifigorgia sp.1 y Pacifigorgia sp.2, Muricea cf. fruticosa, Muricea sp. y la especie invasora Carijoa riisei. Los octocorales forman densas agregaciones en paredes y escarpes rocosos, con su mayor abundancia entre 10 y 20 m, alcanzando densidades máximas de hasta 20 colonias m-2. La especie más abundante fue Pacifigorgia cf. lacerata, con más de un 60 % de predominio en número y una frecuencia de aparición del 100 % para todos los sitios visitados. Para la mayoría de los sitios se determinó la existencia de tres zonas bien definidas de acuerdo a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Malpelo; Octocorales; Enfermedades coralinas; Especie invasora.
Ano: 2011 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612011000300008
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ENDEMIC SHALLOW REEF FISHES FROM MALPELO ISLAND: ABUNDANCE AND DISTRIBUTION* Boletín de Investigaciones
Chasqui Velasco,Luis; Gil-Agudelo,Diego L.; Nieto,Ramón.
The fish species endemic to Malpelo Island have been scarcely studied, resulting in a lack of information on their densities and habitat preferences. The distribution and abundance of the endemic reef fish species of Malpelo were estimated using underwater visual census techniques. The most abundant species were Axoclinus rubinoffi (0.18 fish/m²) and Lepidonectes bimaculatus (0.08 fish/m²). The highest abundance was found in rocks covered by coralline algae in the Bajo de Junior site.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Endemic fishes; Malpelo; Axoclinus; Lepidonectes; Acanthemblemaria.
Ano: 2011 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612011000300006
Registros recuperados: 3
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