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The distribution and abundance of certain reef fish larvae adjacent to adult habitats in Kaneohe Bay, Hawaii
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|Title:||The distribution and abundance of certain reef fish larvae adjacent to adult habitats in Kaneohe Bay, Hawaii|
|Authors:||Kobayashi, Donald R.|
|Issue Date:||Dec 1987|
|Publisher:||University of Hawaii at Manoa|
|Citation:||Kobayashi, Donald R. The distribution and abundance of certain reef fish larvae adjacent to adult habitats in Kaneohe Bay, Hawaii. Honolulu (HI): University of Hawaii at Manoa, 1987.|
|Abstract:||Plankton samples were taken in Kaneohe Bay, Oahu|
with a free-fall plankton net to investigate the finescale
distribution of larval fishes around coral reefs.
Daytime samples indicated that the post flexion larvae of
two gobiids (Psilogobius mainlandi and an unidentified
species, Goby-l) were significantly more abundant at
stations immediately adjacent to reefs (near-reef) than
at stations in open water off the reef. Postflexion
gobiid larvae appear to be capable of resisting
advection/dispersal while remaining in the water column
near suitable adult habitats. The larvae of
Encrasicholina purpurea (Engraulidae) and Foa
brachygrammus (Apogonidae) were significantly more
abundant at off-reef stations than at near-reef stations.
Nighttime samples indicated that the gobiid larvae depend
on visual cues to remain near the reef. The
distributions of Encrasicholina and Foa larvae appeared
related to their vertical positioning.
The near-reef concentrations of the gobiid larvae
indicate that reef-based planktivore pressure may be an
unimportant factor in reef fish larval distributions.
Typical ichthyoplankton surveys which do not sample close
to adult fish habitats would greatly underestimate the
abundance of larvae such as the gobiids.
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|Appears in Collections:||M.S. - Oceanography|
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