EMBRYONIC AND LARVAL DEVELOPMENT OF A RED STRAIN OF THE EGYPTIAN AFRICAN CATFISH (Clarias gariepinus Burchell, 1822)

Abstract

Egyptian African catfish is one of several African catfish (Clarias gariepinus) strains introduced to Indonesia. Several breeding activities using that strain in Sukamandi resulted in some individuals with redish-yellow body colour (a red strain). Biological informations related to aquacultural aspects of that red strain were still scarce. The present study aimed to elucidate the embryonic and larval developments of the red strain compared to those of the black (normal coloured) one, using the progenies obtained from artificial spawning of each red and black coloured brooders. Results of the present study revealed that embryonic developments of the red and black strains were similar. Their larval development were also quite similar, however, both larvae could be distinguished based on the pigmentation. The red strain larvae were golden-red-yellowish in colour, while the black strain larvae were greyish covered with dense melanophores. Total length of the red strain larvae tended to be lower than those of the black strain.

Embryonic and Larval Development of Stinging Catfish, Heteropneustes fossilis, in Relation to Climatic and Water Quality Parameters

“…In another study, the optimal range for temperature (29–31 °C), DO (5.0–6.0 mg/L), and pH (7.1–7.5) was reported for the spawning of stinging catfish [ 31 ]. An incubation temperature of 27.0–29.5 °C was also recorded for embryonic development of the Egyptian African catfish [ 32 ], which corresponds to the readings of this study.…”

“…The yolk sac of M. gulio larvae was depleted on the 3rd day after hatching, at which time the larvae measured 3.86 mm in total length [ 59 ]. The yolk sacs of Clarias gariepinus were reported to be completely absorbed at about 60:00–66:00 h after hatching at a water temperature range of 25–28 °C [ 32 , 60 ].…”

The rate of embryonic development and hatching in transgenic G3 mutiara catfish (Clarias gariepinus) eggs at room temperature

“…Furthermore, for the larval hatching stage, the average time required for G 3 embryos to hatch from female A was 973 minutes (16.22 hours), female B was 985 minutes (16.42 hours) and C 996 minutes (16.60 hours) (Figure 3). Whereas, hatching of non-transgenic catfish (C. gariepinus) eggs was 1040 minutes (17.33 hours) and for Egyptian African catfish (C. gariepinus) eggs it was 1080 minutes (18 hours) [11] . Comparison of hatching duration of catfish eggs between transgenic and non-transgenic fish showed that the hatching rate of transgenic fish eggs was 1-1.5 hours faster than that of non-transgenic fish, indicating that GH-transgenesis (CgGH) was induced embryo development and hatching of fish eggs.…”

KERAGAAN ZOOTEKNIS DAN BIOMETRIK-MORFOLOGIS IKAN LELE MUTIARA, Clarias gariepinus ALBINO

“…Hasil-hasil penelitian karakterisasi morfometrik yang telah dilakukan pada ikan lele Afrika albino yang lain menunjukkan hasil serupa. Ikan lele Afrika albino yang berasal dari Mesir (Iswanto et al, 2016) dan Thailand (Iswanto et al, 2020b)…”

“…Serupa dengan ikan lele Mutiara albino, ikan lele Afrika albino yang berasal dari Mesir (Iswanto et al, 2016) dan Thailand (Iswanto et al, 2020b) juga memiliki jumlah jari-jari sirip punggung dan sirip dubur yang lebih sedikit dibandingkan yang berwarna normal. Hasil-hasil penelitian tersebut mengindikasikan bahwa albinisme pada spesies ikan lele Afrika tampaknya juga berkaitan dengan karakteristik meristiknya, yakni menyebabkan ikan lele Afrika albino memiliki jumlah jari-jari sirip punggung dan sirip dubur yang lebih sedikit dibandingkan yang berwarna normal.…”