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Free Content Larval Development of the Endemic Hawaiian Blenniid, Enchelyurus Brunneolus (Pisces: Blenniidae: Omobranchini)

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Abstract:

A size series of 85 Enchelyurus brunneolus (2.2–17.8 mm), assembled from field collections and laboratory-reared specimens, was examined for pigmentation and morphometric characteristics. A representative subset of 34 cleared and stained specimens (2.9–17.8 mm) was examined for skeletal development E. brunneolus is lightly pigmented, except on the head and gut, throughout larval development. During transformation to the juvenile stage pigmentation becomes heavy over the entire body. Larvae are elongate, with a short gut, rounded snout, and long preopercular spines. Shape changes little during development, although most body parts measured gradually increase relative to standard length throughout larval life. The longest preopercular spine reaches a maximum length of 6–7% of standard length just after notochord flexion, and subsequently is resorbed. Skeletal development is similar to that described for other blenniids. The neurocranium, jaws, suspensorium, opercular series and hyoid arch develop quickly: all are ossifying before notochord flexion. Vertebral centra and neural and haemal arches ossify from anterior to posterior, beginning just before notochord flexion. Dorsal and anal fin rays ossify from anterior to posterior, beginning near the end of notochord flexion. Dorsal fin spines ossify from posterior to anterior, beginning shortly after notochord flexion.

Document Type: Research Article

Publication date: November 1, 1987

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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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