Topic
Sleepy cod
About: Sleepy cod is a research topic. Over the lifetime, 4 publications have been published within this topic receiving 48 citations. The topic is also known as: Oxyeleotris lineolata.
Papers
TL;DR: Analysis of the T2 region of 4 isolates demonstrated the close relationship with isolates from the red-spotted grouper nervous necrosis virus (RGNNV) genotype and the Cluster Ia subtype and identified 2 distinct groupings of the Australian isolates within the RGNNV genotype.
Abstract: In Australia, disease caused by betanodavirus has been reported in an increasing number of cultured finfish since the first report of mortalities in 1990. Partial coat protein gene sequences from the T2 or T4 regions of 8 betanodaviruses from barramundi Lates calcarifer, sleepy cod Oxyeleotris lineolata, striped trumpeter Latris lineata, barramundi cod Cromileptes altivelis, Australian bass Macquaria novemaculata and gold-spotted rockcod Epinephelus coioides from several Australian states were determined. Analysis of the 606 bp nucleotide sequences of the T2 region of 4 isolates demonstrated the close relationship with isolates from the red-spotted grouper nervous necrosis virus (RGNNV) genotype and the Cluster Ia subtype. Comparison of a smaller 289 bp sequence from the T4 region identified 2 distinct groupings of the Australian isolates within the RGNNV genotype. Isolates from barramundi from the Northern Territory, barramundi, sleepy cod, barramundi cod and gold-spotted rockcod from Queensland, and striped trumpeter from Tasmania shared a 96.2 to 99.7% nucleotide identity with each other. These isolates were most similar to the RGNNV genotype Cluster Ia. Isolates from Australian bass from New South Wales and from barramundi from South Australia shared a 98.6% sequence identity with each other. However, these isolates only shared an 85.8 to 87.9% identity with the other Australian isolates and representative RGNNV isolates. The closest nucleotide identity to sequences reported in the literature for the New South Wales and South Australian isolates was to an Australian barramundi isolate (Ba94Aus) from 1994. These 2 Australian isolates formed a new subtype within the RGNNV genotype, which is designated as Cluster Ic.
36 citations
TL;DR: Growth of selected stock at low densities was slower than earlier growth rates, although smaller fish gained weight more rapidly than larger fish, and growth rates were better than the only published data for marble goby.
Abstract: Sleepy cod Oxyeleotris lineolatus is a species of freshwater goby in demand in Australian markets by consumers of Asian origin. It is related to marble goby Oxyeleotris marmoratus, the most expensive freshwater food fish in Asia, which is cultured throughout southeast Asia in ponds and cages. The performance of sleepy cod in culture conditions was investigated to assess the viability of farming them in northern Australia. Sleepy cod fingerlings (62.8 +/- 0.8 mm total length and 2.56 +/- 0.095 g) were stocked into experimental ponds at 32,857 fish/ha, and grown out for 8 mo.
Shelter was provided in each of three replicate ponds and was absent in three control ponds. The provision of shelter in juvenile growout was found to be of no benefit, although fish in ponds provided with shelter weighed slightly more per unit length than fish in ponds without shelter. Cannibalism was not a problem in growout, and survival was close to 100%. After the shelter trial was completed, fish were graded into large and small classes (three replicates of each), and grown out without shelter at the same density for 158 d. Following that, fish were again graded, and the largest 30% retained from growout at a density of 8,857 fish/ha (large, 198 +/-6.44 g) or 10,000 fish/ha (small, 48.9 +/-1.27 g). These were grown out for 188 d.
Growth of selected stock at low densities was slower than earlier growth rates, although smaller fish gained weight more rapidly than larger fish. Growth rates were better than the only published data for marble goby. Further investigation into high density culture and different genotypes of sleepy cod needs to be undertaken to determine the viability of pond culture.
12 citations
TL;DR: The breeding biology of sleepy cod is considered to be an adaptation to the monsoonal tropics and is the highest priced freshwater fish in Asia.
10 citations
TL;DR: The complete mitochondrial genome of the sleepyCod (Oxyeleotris lineolatus) is determined for the first time and the sequence information could play an important role in the study of phylogenetic relationships between the sleepy cod and its related species.
Abstract: The complete mitochondrial genome of the sleepy cod (Oxyeleotris lineolatus) is determined for the first time in this study. It is a circular molecule of 16,519 bp in length, consisting 37 genes, typically found in other vertebrates. The AT content of the overall base composition of the whole mitogenome was 53.90%, while the control region was 62.59%. The protein-coding genes and 6 CSBs were identified. The sequence information could play an important role in the study of phylogenetic relationships between the sleepy cod and its related species.
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2016 | 1 |
| 2009 | 1 |
| 2004 | 1 |
| 2003 | 1 |