Genetic Bases of Fish Selection

Kirpichnikov, Valentin S.

doi:10.1007/978-3-642-68160-8

Cited by 212 publications

(158 citation statements)

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“…The percentages of gold and green offspring gave the result of the competition test, according to Mendelian inheritance (Mendel 1865): wild-green males gave 100% green offspring and gold males gave 100% gold offspring. There was no evidence of codominance in crosses involving various colour varieties (Kirpichnikov 1979 , 24 h before stripping at 21 8C. Sperm was collected individually from each male and kept in a thin layer in cell-culture vessels under aerobic conditions at 0 8C.…”

Section: Colour Markers For Offspring Identificationmentioning

confidence: 99%

Spermatozoal competition in common carp (Cyprinus carpio): what is the primary determinant of competition success?

Linhart¹,

Rodina²,

Gela³

et al. 2005

Reproduction

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The percentage of sperm motility (92-100%), spermatozoan velocity (112 -163 mm·s 21 ) and control hatching rates (83-96%) were evaluated for each of six gold and five green male common carp (Cyprinus carpio). In all 30 possible paired combinations of sperm-competition tests, hatching rates of 90 -97% were achieved. The mean percentage of offspring sired was strongly influenced by the male used (P < 0.001, R 2 5 0.91). The best male sired an average of 88% of the offspring in its competition tests, and the worst male sired only 5%. Spermatozoan-quality parameters could explain only part of the variation in male competitive ability. The male effects alone explained 91.4% of the observed variance, consisting of 17.1% explained by spermatozoan motility and 32.5% by control hatching rates in single fertilizations. Undetermined male effects explained 41.8%. The velocity of spermatozoa had no effect on the outcome of sperm competition. Neither was there any link between spermatozoan velocity and hatching rate in a control hatching test, whereas there was an effect of motility on hatching rate in this same test.Reproduction ( IntroductionSperm competition occurs when the spermatozoa of several males compete for fertilization. Competition is a major force for spermatozoan selection, but its implications for mating systems and on life-history evolution are only just beginning to be understood (Parker 1998, Gage et al. 2004. Trade-offs between gamete characteristics and relative gametic investment has been modelled by evolutionary stable strategy (ESS) approaches, when the optimal strategy for a male depends on the strategy adopted by other individuals in the population , Parker 1998, Petersen & Warner 1998. All of the models assume that males obtain more fertilization success by releasing more sperm, this being done at a cost to investment in other fitness-enhancing functions such as growth, finding additional males, investment in female function, mate defence, territoriality or releasing more sperm in other spawnings. As applied to fish, sperm-competition trials with paternity analysis have been conducted in several salmonid species (Gage et al. 1995, Gile & Ferguson 1995, Liley et al. 2002 and recently also in cyprinids (Kortet et al. 2004, Reichard et al. 2004a, 2004b or other species such as bluegill sunfish (Lepomis macrochirus; Burness et al. 2004). In rainbow trout (Oncorhynchus mykiss) male potency, defined as the ability of males to sire progeny when their sperm is pooled with that of other males, was not affected by the female gametes used, and decreased significantly when sperm concentrations were equalized (Gile & Ferguson 1995). Sperm vary in morphology, behaviour (speed, trajectory, percentage of sperm motility, etc.) and longevity in fishes. Currently, the mechanism of this variation is poorly explained (Cosson et al. 1999). There appear to be intraspecific differences that may correlate with male-mating type in Atlantic salmon (Salmo salar; Gage et al. 1995). Fishes show one of the widest ranges ...

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Section: Colour Markers For Offspring Identificationmentioning

confidence: 99%

Spermatozoal competition in common carp (Cyprinus carpio): what is the primary determinant of competition success?

Linhart¹,

Rodina²,

Gela³

et al. 2005

Reproduction

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“…Kirpichnikov (1981) considered the clines along the Norwegian coast and in the Baltic, and concluded that they were probably supported by environmental selection.…”

Section: Introductionmentioning

confidence: 99%

Haemoglobin polymorphism inGadus morhua: Genotypic differences in haematocrit

Mork¹,

Sundnes²

1984

Helgolander Meeresunters

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“…The great variation in weight of shrimp which would be stocked in a grow-out pond was not profitable because that weight variation would be increasingly greater when shrimp were being grown in the pond. The weight variation of aquatic organisms can be influenced by some environmental factors such as: stocking density and rearing period or age (Kirpichnikov, 1981). Weight variation of shrimp in low density (less than 10,000 individuals/ha) is lower than in high density (more than 10,000 individuals/ha) (Cholik & Mustafa, 1987).…”

Section: Week Variablesmentioning

confidence: 99%

HIGH DENSITY JUVENILE SHRIMP (Penaeus monodon) PRODUCTION WITH DIFFERENT DURATIONS OF REARING IN ACID SULFATE SOIL-AFFECTED POND

Mustafa

Sammut

2010

Indonesian Aquaculture Journal

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An experiment was conducted to evaluate the effectiveness of producing juvenile shrimp in a reservoir pond constructed in acid sulphate soils (ASS). Many ponds constructed in ASS pose a significant economic risk due to high mortality and poor growth. In Indonesia, abandonment of ponds in ASS is widespread and alternative farming practices, such as production of juvenile shrimp, offer farms opportunities to lower their production risks. The experiment involved rearing juvenile shrimp at a high stocking density (3,000 individuals/m 2 ) using hapas in a formerly unproductive pond located in Luwu Regency, South Sulawesi, Indonesia. The treatments tested included rearing periods of three and six weeks with four replications. A survival of 83.62% was achieved after rearing for three weeks compared to 45.44% after six weeks. Although there was a sixfold increase in the mean weight of shrimp from three to six weeks of culture, size variation after six weeks was large due to the high density of shrimp. The experiment showed that old acid sulphate soil-affected ponds, in which the bottom soil has not been excavated any further, can be used for production of juvenile shrimp in hapas. Rearing over three weeks is recommended to obtain high survival and reduce size variation.

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Genetic Bases of Fish Selection

Cited by 212 publications

References 0 publications

Spermatozoal competition in common carp (Cyprinus carpio): what is the primary determinant of competition success?

Spermatozoal competition in common carp (Cyprinus carpio): what is the primary determinant of competition success?

Haemoglobin polymorphism inGadus morhua: Genotypic differences in haematocrit

HIGH DENSITY JUVENILE SHRIMP (Penaeus monodon) PRODUCTION WITH DIFFERENT DURATIONS OF REARING IN ACID SULFATE SOIL-AFFECTED POND

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