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Diel and Seasonal Occurrence Patterns of Drifting Fish Larvae in the Teima Stream, Okinawa Island.

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Title: Diel and Seasonal Occurrence Patterns of Drifting Fish Larvae in the Teima Stream, Okinawa Island.
Authors: Maeda, Ken
Tachihara, Katsunori
LC Subject Headings: Natural history--Periodicals.
Science--Periodicals
Natural history--Pacific Area--Periodicals.
Issue Date: Apr 2010
Publisher: Honolulu, University of Hawaii Press
Citation: Maeda K, Tachihara K. Diel and Seasonal Occurrence Patterns of Drifting Fish Larvae in the Teima Stream, Okinawa Island. Pac Sci 64(2): 161-176.
Series/Report no.: vol. 64, no. 2
Abstract: Drifting fish larvae were collected with a plankton net in the lower reaches of a freshwater area of the Teima Stream, Okinawa Island, Japan, during 24 hr periods each month from June 1998 to October 1999 (except July 1998). Newly hatched larvae of several gobioid and two pipefish species were collected, and their morphology was described. The larval occurrences suggested that most species spawn mainly from spring to fall, with some Rhinogobius species spawning in winter. Larvae of all fishes occurred predominantly during hours after dusk throughout the year. It is suggested that larvae of amphidromous fishes spawned in freshwater streams on Okinawa Island begin to drift soon after hatching at dusk and complete their exit from freshwater areas into the estuary and sea by midnight.
Description: v. ill. 23 cm.
Quarterly
Pages/Duration: 16 p.
URI/DOI: http://hdl.handle.net/10125/23099
ISSN: 0030-8870
Appears in Collections:Pacific Science, Volume 64, Number 2, 2010



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