Vertical Distributions of Phyllosoma Larvae of Palinurid and Scyllarid Lobsters in the Western North Pacific |
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Authors: | Hideki Minami Nariaki Inoue Hideo Sekiguchi |
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Institution: | (1) Faculty of Bioresources, Mie University, 15l5 Kamihama-cho, Tsu, Mie 514-8507, Japan |
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Abstract: | Vertical distributions of phyllosoma larvae were examined in waters east of the Philippines or west of the Mariana Islands
(18°56′ N to 19°04′ N; 129°10′ E to 129°35′ E) based on zooplankton samples collected with an Isaacs-Kidd Midwater Trawl on
September 22–24, 1986. Phyllosoma larvae belonged to the two families Scyllaridae and Palinuridae comprising 4 genera and
9 species. Of the collected phyllosoma larvae, those of Scyllarus cultrifer and Panulirus longipes were most abundant and showed similar vertical distributions: (1) both species were collected from the mixed layer at night
but not in the day, (2) their vertical distributions did not change with their stages, and (3) the upper limit of their vertical
distributions during the day accorded with the base of mixed layer. Furthermore, their vertical distributions were similar
to those of lepthocephalus larvae which were collected using the same sampling stations and gear in the present study. Vertical
distributions of phyllosoma larvae were discussed in relation to their horizontal distributions.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | Phyllosoma larvae vertical distribution diel migration Western North Pacific |
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