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HOMING AND ORIENTATION IN THE SPOTTED SPINY LOBSTER, PANULIRUS GUTTATUS (DECAPODA, PALINURIDAE), TOWARDS A SUBTIDAL CORAL REEF HABITAT

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[Panulirus guttatus (Latreille, 1804) is a sedentary, non-migratory species of spiny lobster that lives in the coral reef habitat throughout its benthic life. Homing and orientation of P.guttatus were investigated through experimental displacements of individual lobsters. Lobsters were caught in fixed traps deployed around three coral patches along a reef tract in northern Quintana Roo, Mexico. A total of 145 adult lobsters were tagged and individually released in one of four compass directions corresponding to the following sites as related to their home reef patches: in the reef lagoon (310°, ~W), along the axis of the reef tract (20°, ~N, or 200°, ~S) and in the fore-reef (100°, ~E). In each direction, individuals were displaced over 50, 100, or 200 m away from their point of capture. Thirty lobsters were recaptured, 29 of which in the same area of the reef patch where they had been initially captured, regardless of the time elapsed (1-146 days). The proportion of recaptured lobsters was independent of the direction and distance of release when lobsters were displaced 50 and 100 m into the reef lagoon or along the axis of the reef, but no lobsters were recaptured from a distance of 200 m along the axis of the reef. Hence, the familiar home range of P. guttatus appears to lie within a radius of 100 m along the reef tract, and within this home range individuals possibly use several crevices as refuges. A tethering experiment showed that lobsters significantly moved towards the reef when released on bare sand 500 m away from the reef. Wave surge may have oriented the lobsters towards the reef. These results indicate that, despite their sedentary, non-migratory nature, adult male and female P.guttatus show homing and orientation abilities.

Panulirus guttatus (Latreille, 1804) es una especie de langosta sedentaria, no migratoria, que vive en el hábitat arrecifal durante toda su vida béntica. Se investigó la habilidad de P. guttatus para regresar al refugio y para orientarse por medio del desplazamiento experimental de langostas individuales. Las langostas se capturaron en trampas fijas colocadas alrededor de tres parches coralinos a lo largo del tracto arrecifal en el norte de Quintana Roo, México. Un total de 145 langostas adultas fueron marcadas y liberadas en una de cuatro direcciones en relación con sus parches arrecifales originales: en la laguna arrecifal (310°, ~W), a lo largo del eje del tracto arrecifal (20°, ~N, o 200°, ~S), y en el arrecife frontal (100°, ~E). En cada dirección, las langostas fueron desplazadas 50, 100 o 200 m de su punto de captura. Se recapturaron 30 langostas, de las cuales 29 se encontraron en la misma área del parche arrecifal donde originalmente se capturaron, independientemente del tiempo transcurrido (1-146 días). La proporción de langostas recapturadas fue independiente de la dirección y distancia de liberación en individuos desplazados 50 o 100 m en la laguna arrecifal o a lo largo del tracto arrecifal, pero no se recapturaron individuos desplazados 200 m a lo largo del eje del tracto arrecifal. Por tanto, el ámbito hogareño familiar de P. guttatus parece comprender un radio de 100 m a lo largo del tracto arrecifal, y dentro de este ámbito hogareño los individuos pueden utilizar varios refugios. Un experimento con langostas atadas mostró que las langostas tendieron significativamente a moverse hacia el arrecife coralino después de ser liberadas en un fondo arenoso a 500 m del arrecife. La dirección del oleaje puede haber orientado a las langostas hacia el arrecife. Los resultados indican que, a pesar de su naturaleza sedentaria y no migratoria, los machos y hembras adultos de P. guttatus muestran habilidades para orientarse y regresar a su ámbito hogareño., Panulirus guttatus (Latreille, 1804) is a sedentary, non-migratory species of spiny lobster that lives in the coral reef habitat throughout its benthic life. Homing and orientation of P.guttatus were investigated through experimental displacements of individual lobsters. Lobsters were caught in fixed traps deployed around three coral patches along a reef tract in northern Quintana Roo, Mexico. A total of 145 adult lobsters were tagged and individually released in one of four compass directions corresponding to the following sites as related to their home reef patches: in the reef lagoon (310°, ~W), along the axis of the reef tract (20°, ~N, or 200°, ~S) and in the fore-reef (100°, ~E). In each direction, individuals were displaced over 50, 100, or 200 m away from their point of capture. Thirty lobsters were recaptured, 29 of which in the same area of the reef patch where they had been initially captured, regardless of the time elapsed (1-146 days). The proportion of recaptured lobsters was independent of the direction and distance of release when lobsters were displaced 50 and 100 m into the reef lagoon or along the axis of the reef, but no lobsters were recaptured from a distance of 200 m along the axis of the reef. Hence, the familiar home range of P. guttatus appears to lie within a radius of 100 m along the reef tract, and within this home range individuals possibly use several crevices as refuges. A tethering experiment showed that lobsters significantly moved towards the reef when released on bare sand 500 m away from the reef. Wave surge may have oriented the lobsters towards the reef. These results indicate that, despite their sedentary, non-migratory nature, adult male and female P.guttatus show homing and orientation abilities.

Panulirus guttatus (Latreille, 1804) es una especie de langosta sedentaria, no migratoria, que vive en el hábitat arrecifal durante toda su vida béntica. Se investigó la habilidad de P. guttatus para regresar al refugio y para orientarse por medio del desplazamiento experimental de langostas individuales. Las langostas se capturaron en trampas fijas colocadas alrededor de tres parches coralinos a lo largo del tracto arrecifal en el norte de Quintana Roo, México. Un total de 145 langostas adultas fueron marcadas y liberadas en una de cuatro direcciones en relación con sus parches arrecifales originales: en la laguna arrecifal (310°, ~W), a lo largo del eje del tracto arrecifal (20°, ~N, o 200°, ~S), y en el arrecife frontal (100°, ~E). En cada dirección, las langostas fueron desplazadas 50, 100 o 200 m de su punto de captura. Se recapturaron 30 langostas, de las cuales 29 se encontraron en la misma área del parche arrecifal donde originalmente se capturaron, independientemente del tiempo transcurrido (1-146 días). La proporción de langostas recapturadas fue independiente de la dirección y distancia de liberación en individuos desplazados 50 o 100 m en la laguna arrecifal o a lo largo del tracto arrecifal, pero no se recapturaron individuos desplazados 200 m a lo largo del eje del tracto arrecifal. Por tanto, el ámbito hogareño familiar de P. guttatus parece comprender un radio de 100 m a lo largo del tracto arrecifal, y dentro de este ámbito hogareño los individuos pueden utilizar varios refugios. Un experimento con langostas atadas mostró que las langostas tendieron significativamente a moverse hacia el arrecife coralino después de ser liberadas en un fondo arenoso a 500 m del arrecife. La dirección del oleaje puede haber orientado a las langostas hacia el arrecife. Los resultados indican que, a pesar de su naturaleza sedentaria y no migratoria, los machos y hembras adultos de P. guttatus muestran habilidades para orientarse y regresar a su ámbito hogareño.]

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/content/journals/10.1163/156854002321210712
2002-07-01
2016-09-28

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