Barbonymus schwanenfeldii pdf

In Kalimantan population, the female broodstocks was In general, female broodstocks were bigger than male broodstocks. The weight on the female broodstocks affected their gonad weight. Java populations had an ovo somatic index of Meanwhile, broodstocks from Kalimantan have an ovo somatic index of The eggs from both populations had relatively equal diameters from 0. The greater size of broodstocks will further increase the fecundity. Table 2. Reproduction characterization of outbreeding results tinfoil barb fish from J and K reciprocally.

The fertilization rate was evaluated from the egg color. Unfertilized eggs were milky white within two hours after the fertilization process. In this study, the eggs were incubated under the same environment conditions temperature: oC; pH: , so it could be assumed that the hatchability of most eggs was inherited.

According to [11], the increase in reproductive performance in outbreeding fish occurred because there was an increase in heterozygosity and outbreeding. In addition, according to [12], reproductive performance could be influenced by size, condition and viability of the female broodstocks. Outbreeding increases heterozygosity [3]. Populations with high genetic diversity have a higher life chances, because many alternative or combinations of genes are available to cope with the environmental changes [].

Genetic variety is a key parameter on population fitness which guaranteed its sustainability and the ability to passively respond the natural or artificial selection [16]. Genetic diversity reflected the number of allele variations associated with flexibility in the adaptation process. Potential genetic resources for aquaculture were required to have responsive genetic diversity on environmental changes, so that it could contribute to maintain their generations.

In general, the growth pattern of tinfoil barb depends on their rearing environment. In concrete ponds, they are allometric positive. Meanwhile, they are allometric negative in earthen ponds. Table 4. Growth characteristics length and weight , specific growth rate and survival rate of outbreeding tinfoil barb from J and K reciprocally.

Table 5. Heterosis value for reproductive character from reciprocal outbreeding of tinfoil barb from J and K. The heterosis value showed an increase in heterozygosity of 0. The values obtained in this study were relatively low.

However, the value could provide information that reproductive characters could still be improved. Low value of heterosis did not mean that the generation resulted from outbreeding were poor. However, it explained a condition of comparison between the average descendants with their parents.

Heterosis value was a description of the genes compatibility inherited from both parents to their generations. Heterosis value arises because of the combination of new genes, so that it was expected to produce better performance than their parents [18].

Table 7. The water quality in the aquarium during the experiment References Variable Water quality Range Susanti Kottelat Temperature oC 25 - 28 25 - 30 Growth is strongly influenced by temperature, pH and dissolved oxygen [19].

In general, water quality data temperature, pH and DO during experiment in the aquarium were still within the tolerance limit for fish growth and survival. Group of subadults from the German aquarium trade. In the wild they are considered an opportunistic feeder, that will consume smaller fish, algae, small invertebrates, plant matter and even organic detritus. In captivity, it will eat almost anything provided to it. Otherwise there are no obvious external differences.

Cyprinidae and Tetraodontidaewith comments on the definition of the first reviser. Largely herbivorous, consuming aquatic macrophytes and submerged land plants, as well as filamentous algae and occasionally insects Ref. Barbonymus schwanenfeldii Bleeker Also feeds on small fishes Ref. Originating in the Mekong and Chao Phraya basins of Thailandand SumatraBorneoand Malayan peninsulathe tinfoil barb is found in rivers, streams, canals, and ditches. Barbodes schwanefeldii lapsus Barbodes schwanenfeldii BleekerBarbonymus schwanefeldii lapsus Barbus schwanefeldii lapsus Barbus schwanenfeldii BleekerPuntius schwanefeldii lapsus Puntius schwanenfeldii Bleeker Maximum Standard Length — mm.

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You also have the option to opt-out of these cookies. Large individuals schwanenfeldli or golden yellow in life with its dorsal fin red and caudal fin orange or blood-red Ref. Estimates of some properties based on models Phylogenetic diversity index Ref. There are no obvious distinguishing characteristics used to determine the sex of the fish.

The product is already in the wishlist! Barbonymus schwanenfeldii possesses a distinct black stripe along each lobe of this fin whereas Barbonymus altus does not.

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These cookies do not store any personal information. Nature , London: The British Museum. Fish introductions in Europe with particular reference to its central and eastern part. Kottelat, M. Ichthyological Exploration of Freshwaters 9, 1— Fishes of Laos. Freshwater Fishes of Western Indonesia and Sulawesi. Hong Kong: Periplus Editions. Lambert, D. Freshwater Aquarium Fish. Edison, NJ: Chartwell Books. Lundberg, J. Annals of Missouri Botanical Garden 87, 26— McAdam, D.

Comparison of reproductive indicators and analysis of the reproductive seasonality of the tinfoil barb, Puntius schwanenfeldii, in the Perak River, Malaysia. Environmental Biology of Fishes 55, — Biological invasions of fresh water: empirical rules and assembly theory. Biological Conservation 78, — Aquarium Sciences and Conservation 1, 79—