Genetic crosses of albino/normal and short/long fin bristlenose plecos

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Genetic crosses of albino/normal and short/long fin bristlenose plecos

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Editorial notes:
  • In spite of its title, obviously this paper is about Ancistrus cf_cirrhosus.
  • Slayer = long tail fin
  • non slayer = short tail fin

Teduh, A., Soelistyowati, D. T., Carman, O., & Arfah, H. (2020). Production of albino slayer through a combination of crossing in brushmouth (Hypostomus plecostomus, Linnaeus 1758) ornamental fish. Jurnal Iktiologi Indonesia, 20(1), 47-58.

https://doi.org/10.32491/jii.v20i1.510
http://jurnal-iktiologi.org/index.php/j ... e/view/510
PDF: http://jurnal-iktiologi.org/index.php/j ... ew/510/pdf
Abstract
The objectives of this research was to evaluate the inheritance of albino slayer phenotype in brushmouth (Hypostomus plecostomus, Linn 1758) through the crosses and reproduction performance. The crossing scheme consisted of reciprocal crosses between albino slayer and albino non slayer (SN, NS) and between albino slayer (SS), each spawning in pairs (1:1) with three replications and twice spawning. The fish used in this study were brushmouth fish (Hypostomus sp.) albino Slayer males 9.07 ± 0.5 cm, albino slayer females 8.96 ± 0.4 cm, albino non slayer males 8.87 ± 0.17 cm, and albino non slayer female 8.86 ± 0.16 cm. Slayer phenotype category was identified based on the caudal length fin with 4.43 ± 0.64 cm. Parameters determined included the phenotype distribution of albino slayer, total number of eggs, fertilization rate, hatching rate and survival rate. The results showed that all crossing schemes produced four phenotypes classes including normal slayer, normal non slayer, albino slayer and albino non slayer. The slayer phenotype of albino brushmouth was highest percentage (75%) in crossing with male albino slayer (SN, SS) and highest number of eggs, while the reciprocal crossing with female albino slayer (NS) produced albino slayer 55% and lower egg count. The ratio of tail fin length to body length in albino slayer phenotype was lower than normal phenotype of broom fish. The fertilization and hatching rates were not significantly different in all crosses; however the number of eggs decreased in the second spawning. The similar phenotype cross between albino slayer phenotypes (SS) resulted the best average of survival rate (92%).
  • Keywords: brushmouth; ornamental fish; phenotype inheritance; crossing
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