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Free Content Hawaiian Creediid Fishes (Crystallodytes Cookei and Limnichthys Donaldsoni): Development of Eggs and Larvae and Use of Pelagic Eggs to Trace Coastal Water Movement

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The development of Crystallodytes cookei and Limnichthys donaldsoni is described and illustrated from pelagic eggs and larvae collected in Hawaiian waters. Eggs were reared in the laboratory. Crystallodytes cookei eggs are spherical, 0.96–1.08-mm diameter, with numerous oil droplets which change position during development. Eggs hatch in about 48 h. Larvae are elongate, lightly pigmented, and characterized by unusual preopercular spination. Limnichthys donaldsoni eggs are similar, but smaller (0.78 mm): larvae are similar to C. cookei but have fewer myomeres.

Crystallodytes cookei off Kahe Point, Oahu spawns close to shore in the late afternoon to evening throughout the year. Creediid eggs and larvae are frequently encountered, but are not abundant in plankton samples from around Oahu.

The spatially and temporally limited spawning of C. cookei combined with an ability to age the eggs into daily cohorts permits the use of eggs to trace coastal water movements: two examples are presented. Sampling over several days at a single location on the leeward (west) coast of Oahu documented the movement of eggs and the parent water parcel out of and back into the area. Sampling an offshore transect documented the movement of eggs and water from close to shore, away from shore, and back inshore again in 17 h. These preliminary observations suggest the presence of an eddy which may retain the eggs close to the spawning site. Application of the method is limited by incomplete ecological information on adult C. cookei, but should be possible in other coastal systems if species with similar characteristics can be found.

Document Type: Research Article

Publication date: January 1, 1982

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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