Heterosis in fingerlings from a diallel cross between two wild strains of silver perch (<i>Bidyanus bidyanus</i>)

Guy, Jeffrey A; Jerry, Dean R.; Rowland, Stuart J.

doi:10.1111/j.1365-2109.2009.02227.x

Cited by 11 publications

(9 citation statements)

References 45 publications

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“…Moreover, increased heterozygosity results in improved growth by affecting characteristics such as enzyme products of genes which sway developmental rate through their influence on the metabolic rate and flux (Danzmann, Ferguson & Allendorf 1985). Guy et al (2004) determined the growth performance and magnitude of heterosis of Cataract Dam (C × C) and Murray River (M × M) strains, and their reciprocal crosses (C ♂ × M ♀ and M ♂ × C ♀ ) in earthen ponds. Mid and best parent heterosis (MPH, BPH) for final weight was higher in M ♂ × C ♀ (MPH, 20.86%; BPH, 16.02%) than C ♂ × M ♀ (MPH, 15.59%; BPH, 10.96%).…”

Section: Discussionmentioning

confidence: 99%

“…Rowland, Mifsud, Nixon and Boyd (2003) reported differences in the performance and feeding behaviour between the Cataract and Murray strains under culture conditions. In addition, preliminary results of a cross‐breeding project indicate a significant level of heterosis (H=18.24%) in the hybrids between the Murray and Cataract strains during the larval rearing phase (Guy, Rowland, Mifsud, Nixon, Ferrie & Simpson 2004).…”

Section: Introductionmentioning

confidence: 99%

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Effects of genetic strain and holding facility on the characteristics of alkaline phosphatase and brush border enzymes in silver perch (Bidyanus bidyanus)

et al. 2007

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The activity of the enzymes located in the digestive tract (pyloric caeca and intestine) in two strains and F1 crosses of the Australian freshwater fish silver perch [Murray River (M) and Cataract Dam (C)] was evaluated. The effect of the fish holding system (cages or ponds) on the activity of alkaline phosphatase (AP) and the brush border enzymes: maltase, leucine amino peptidase (LAP) and γ‐glutamyl transferase (γ‐GT) was examined. The enzymatic activity was tested in three intestinal sections: the pyloric caeca, upper and lower intestine. All the tested enzyme activities were influenced by an interaction between the intestinal section and the strain or cross of silver perch. For fish maintained in ponds, there were two distinct enzymatic activity patterns, one for the pure strains (C × C and M × M) and one for the crosses (C × M and M × C). Significantly higher (P<0.05) enzymatic activities of the crosses compared with the pure strains were particularly noticeable in the pyloric caeca. In fish held in cages, there was a significantly higher (P<0.05) enzymatic activity in the pyloric caeca of the C × C strain. The total enzymatic activities in the fish reared in the ponds were significantly higher (P<0.05) than those in the fish held in cages. The results of the present investigation confirm that the different genetic background of the silver perch in the Murray River and in the Cataract Dam influences the activity of the brush border digestive enzymes. This activity also varies between maintenance systems.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of genetic strain and holding facility on the characteristics of alkaline phosphatase and brush border enzymes in silver perch (Bidyanus bidyanus)

et al. 2007

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“…In the agri-food industry, heterosis is largely used to improve performance traits. In fishes, evidence for heterosis has been found for neonatal survival in the guppy (Poecilia reticulata Peters, 1859) (Shikano and Taniguchi 2002) and growth rate in carp (Cyprinus carpio L., 1758) (Wohlfarth 1993;Vandeputte 2003;Nielsen et al 2010), Nile tilapia (Oreochromis niloticus (L., 1758)), walking catfish (genus Clarias Scopoli, 1777) (see Bryden et al 2004), and silver perch (Bidyanus bidyanus (Mitchell, 1838)) (Guy et al 2009). Because of the high heritability of growth traits, most of the work on salmonids has concentrated on family selection and little is known about crossbreeding.…”

Section: Introductionmentioning

confidence: 99%

Heterosis and outbreeding depression between strains of young-of-the-year brook trout (Salvelinus fontinalis)

2011

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Brook trout ( Salvelinus fontinalis (Mitchill, 1814)) supports a lucrative fish aquaculture industry in Quebec and production of this species is mainly oriented to stock enhancement supporting sport fisheries. The aim of this study was to verify the expression of interstrain heterosis, i.e., increased performance of first generation hybrid progeny, during the first stages of development in brook trout. Two wild populations that were recently introduced to fish production in Quebec, the Laval (L) and the Rupert (R) strains, and a domestic strain (D) that is present in most Quebec fish farms were used in this study. The growth of 72 full-sibling families, representing three pure (♀D × ♂D, ♀L × ♂L, ♀R × ♂R) and five hybrid (♀D × ♂L, ♀D × ♂R, ♀L × ♂D, ♀L × ♂R, ♀R × ♂L) cross types, were surveyed from hatching to 2136 degree-days. Both heterosis and outbreeding depression were observed, depending on the hybrid cross type. The occurrence of heterosis was dependent on the developmental stage, and growth advantage at a very early developmental stage did not necessarily translate into bigger size later on. Outbreeding depression in growth (mass or length) was much less common than heterosis, and when occurring, it varied from 9.2% to 33.3% compared with 9.0% to 88.2% improvement in growth traits for heterosis. The results indicate that in early development, there was higher occurrence of heterosis relative to fish mass than to fish length and that, overall, the occurrence of heterosis was unpredictable.

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“…The threatened status of silver perch has implications for commercial aquaculture, and a shortage of broodfish is imminent unless silver perch are domesticated on commercial farms (Rowland 2004). In addition, access to wild stocks will be important for future breeding programs to maintain genetic variation and to facilitate the use of heterosis for genetic improvement (Rowland and Tully 2004; Guy et al in press).…”

Section: Threatened Status and Conservationmentioning

confidence: 99%

“…A current research project at GAC is evaluating genetic improvement techniques, including heterosis and mass selection. There is heterosis in fingerlings from the cross between Murray and Cataract strains suggesting that the use of these hybrids has the potential to reduce the length of the culture period and lower production costs (Guy et al in press). There are also significant differences in the activity of digestive brush border enzymes between these two strains of silver perch and their crosses (Hakim et al 2007).…”

Section: Strains and Genetic Improvementmentioning

confidence: 99%

Review of Aquaculture Research and Development of the Australian Freshwater Fish Silver Perch, Bidyanus bidyanus

Rowland¹

2009

J World Aquaculture Soc

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Silver perch, Bidyanus bidyanus (Mitchell), is a freshwater fish that is endemic to the Murray‐Darling River System, Australia. Over recent decades, its distribution and abundance in the wild have declined, and it is now a threatened species with the conservation status of “vulnerable.” Silver perch is a schooling, omnivorous fish, with white flesh, few bones, and high levels of omega fatty acids, and its aquaculture potential has long been recognized. Hatchery techniques, based on hormone‐induced spawning of captive broodfish in tanks and rearing of larvae in fertilized earthen ponds, were developed in the early 1980s. Fingerlings are currently used for stock enhancement and conservation or sold for commercial grow‐out or stocking farm dams. Research into the grow‐out of silver perch commenced in 1990 and demonstrated that it is an excellent fish for culture in static aerated earthen ponds with high survival rates (>90%), fast growth rates (2–5 g/fish/d) at high stocking densities (20,000/ha) leading to high production rates (10 tonnes/ha/yr). Since 1996, there has been research into nutrition, diet development, feeding strategies, broodfish domestication and management, culture in tanks and tank‐based recirculating aquaculture systems, diseases, health management, genetic improvement, and cage culture. Silver perch is a hardy species that performs well under different culture conditions and on diets with no or low levels of fish meal. Technology has been transferred to industry through major conferences in 1994 and 2003 as well as workshops, field days, extension, seminars, and numerous scientific and technical publications. The high quality of silver perch and its excellent culture attributes suggest that the species has the potential to form a large industry based on high‐volume, low‐cost production. However, despite these features and a strong technical base provided by research and development, industry growth has been limited and a relatively small industry currently produces only around 500 tonnes annually. Development has been restricted by a number of factors: poor site selection and design of some farms; use of inappropriate husbandry and/or production strategies; difficulties with pond production, including significant losses to bird predation and diseases; high costs of feeds; limited marketing and promotion; no processing component; no large‐scale investment; and the failure of many farms that were too small to be economically viable. Recent research has found that silver perch performs well in cages (high survival [>90%], good growth [1.7–3.5 g/fish/d], and high production rates [50–90 kg/m3]), and cage culture has advantages such as ease of management and prevention of bird predation that may help overcome some of the problems associated with pond production. Improved health management, new production strategies, cage culture, use of interstrain hybrids and other genetically improved fish, and integration with cotton and other irrigation industries offer opportunities for increased produ...

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Heterosis in fingerlings from a diallel cross between two wild strains of silver perch (Bidyanus bidyanus)

Cited by 11 publications

References 45 publications

Effects of genetic strain and holding facility on the characteristics of alkaline phosphatase and brush border enzymes in silver perch (Bidyanus bidyanus)

Effects of genetic strain and holding facility on the characteristics of alkaline phosphatase and brush border enzymes in silver perch (Bidyanus bidyanus)

Heterosis and outbreeding depression between strains of young-of-the-year brook trout (Salvelinus fontinalis)

Review of Aquaculture Research and Development of the Australian Freshwater Fish Silver Perch, Bidyanus bidyanus

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