eCite Digital Repository

Hormone-induced spawning and development of artificially reared larvae of the West Australian dhufish, Glaucosoma hebraicum (Glaucosomatidae)

Citation

Pironet, FN and Neira, FJ, Hormone-induced spawning and development of artificially reared larvae of the West Australian dhufish, Glaucosoma hebraicum (Glaucosomatidae), Marine and Freshwater Research, 49, (2) pp. 133-142. ISSN 1323-1650 (1998) [Refereed Article]

DOI: doi:10.1071/MF97250

Abstract

Hormone-induced spawning of the West Australian dhufish, Glaucosoma hebraicum (Glaucosomatidae) is reported, and the artificially-reared eggs and larvae are described. Hormones tested were hCG, Ovaprim and LHRH analogue, the last both as implants and in a saline solution. Late-stage fertilized eggs are spherical (960-1200 μm), possess a pigmented oil globule (210-273 μm) anteriorly on the unsegmented yolk, and hatch in about 32 hours at ~23°C. Newly hatched larvae (1.75-2.10 mm) have a prominent yolk sac which is resorbed after 3.3 days. The mouth becomes functional from Day 3, first feeding occurs from Day 3.5 and the inflated gas bladder is first observed from Day 4.3. Larvae examined (1.75-8.13 mm) have a moderately deep body, 24-25 myomeres, early-forming pelvic fins that are heavily pigmented by the postflexion stage, small to moderate head spination, no gap between anus and anal-fin origin, and a distinct pattern of pigmentation. Notochord flexion occurs between 3.42 (15 days) and 4.83 mm (25 days), and the transition to the juvenile stage starts from -8 mm (45-46 days). Comparisons with taxa with similar larvae show that Glaucosoma larvae share some similarities with pempherid larvae, although the evidence is not sufficient to strengthen the view that both groups are closely related.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Fisheries Sciences not elsewhere classified
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Wild Caught
Objective Field:Fisheries - Wild Caught not elsewhere classified
Author:Neira, FJ (Dr Francisco Neira)
ID Code:36048
Year Published:1998
Web of Science® Times Cited:14
Deposited By:TAFI - Marine Research Laboratory
Deposited On:2005-09-30
Last Modified:2011-11-21
Downloads:0

Repository Staff Only: item control page