caa a22 4500 477116531 CHVBK 20180405111624.0 cr unu---uuuuu 170330e19961101xx s 000 0 eng 10.1007/BF00000499 doi (NATIONALLICENCE)springer-10.1007/BF00000499 Examination of a great abundance of filefish, Pervagor spilosoma , in Hawaii [Elektronische Daten] [Edmund Hobson, James Chess] Synopsis: The endemic filefish Pervagor spilosoma appeared in exceptionally large numbers throughout the major Hawaiian Islands during the spring of 1985 and remained abundant through 1988. We examined this occurrence with a perspective gained from studies of reef communities at the Island of Hawaii by one or both of us during most years from 1969 to 1994. P. spilosoma is known to vary in numbers, but such great abundances are rare. Although the species is considered a reef fish, individuals constituting the abundance were mostly in the water column, and spread from coastal reefs to the pelagic zone offshore. One might assume they represented an extraordinary recruitment of pelagic juveniles in the process of shifting to benthic habits, but our data indicate a more complex situation. Individuals in the water column tended to be larger than individuals near the reef, and although the former were feeding on plankton when collected, many had shifted to planktivory from earlier feeding on the benthos. Also, many in the water column were ailing, with moribund and dead individuals common, and these tended to carry parasites of types known to induce their hosts to rise toward the surface. We suggest that the great number of filefish we observed above near-shore reefs represented the shoreward fringe of a vast pool of individuals, varied in age, that had accumulated during the exceptionally long pelagic-juvenile period that is characteristic of tetraodontiforms. Kluwer Academic Publishers, 1996 Coral-reef fish nationallicence Recruitment nationallicence Food habits nationallicence Parasites nationallicence Selective mortality nationallicence Hobson Edmund Tiburon Laboratory, Southwest Fisheries Science Center, 3150 Paradise Drive, 94920, Tiburon, CA, U.S.A. aut Chess James Tiburon Laboratory, Southwest Fisheries Science Center, 3150 Paradise Drive, 94920, Tiburon, CA, U.S.A. aut Environmental Biology of Fishes Kluwer Academic Publishers; http://www.wkap.nl 47/3(1996-11-01), 269-278 0378-1909 47:3<269 1996 47 10641 https://doi.org/10.1007/BF00000499 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00000499 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hobson Edmund Tiburon Laboratory, Southwest Fisheries Science Center, 3150 Paradise Drive, 94920, Tiburon, CA, U.S.A aut NATIONALLICENCE 700 1- Chess James Tiburon Laboratory, Southwest Fisheries Science Center, 3150 Paradise Drive, 94920, Tiburon, CA, U.S.A aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Kluwer Academic Publishers; http://www.wkap.nl/ 47/3(1996-11-01), 269-278 0378-1909 47:3<269 1996 47 10641 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer