| pseudorhabdosynochus quadratus n. sp. (monogenea: diplectanidae) from the white-streaked grouper epinephelus ongus (bloch) (perciformes: serranidae) off new caledonia. | pseudorhabdosynochus quadratus n. sp. is described from three specimens collected from the gills of a rarely examined fish, the white-streaked grouper epinephelus ongus (bloch), caught off nouméa, new caledonia. the description is based on berlese slides and observations of live specimens; the soft parts are not described in detail. the species is characterised by a compact, sclerotised vagina with a robust trumpet, short primary canal, two closely associated chambers linked by a very short seco ... | 2011 | 21487950 |
| use of a gyroscope/accelerometer data logger to identify alternative feeding behaviours in fish. | we examined whether we could identify the feeding behaviours of the trophic generalist fish epinephelus ongus on different prey types (crabs and fish) using a data logger that incorporated a three-axis gyroscope and a three-axis accelerometer. feeding behaviours and other burst behaviours, including escape responses, intraspecific interactions and routine movements, were recorded from six e. ongus individuals using data loggers sampling at 200 hz, and were validated by simultaneously recorded vi ... | 2014 | 25013109 |
| the effect of spine postures on the hydrodynamic drag in epinephelus ongus larvae. | laboratory behavioural observation and computational fluid dynamics (cfd) analysis were conducted to examine whether the movement of the elongated dorsal and pelvic spines changed the hydrodynamic drag in white-streaked grouper epinephelus ongus larvae. the behavioural observation in the tank revealed that the larvae extended the dorsal and pelvic spines during passive transport and retracted during swimming; the angles of the dorsal and pelvic spines in relation to the anteroposterior axis were ... | 2014 | 25124030 |
| spawning aggregation of white-streaked grouper epinephelus ongus: spatial distribution and annual variation in the fish density within a spawning ground. | white-streaked grouper (epinephelus ongus) is an important fisheries target and forms spawning aggregations at particular spawning grounds. the aims of the present study were to investigate the ecological characteristics of annual spawning aggregations such as (1) spatial variations in the density of e. ongus at the spawning ground, (2) the relationship between fish density and environmental variables, (3) inter-annual variations in the spawning aggregation, (4) the proportion of males to female ... | 2017 | 28229026 |