Hybridization between threatened freshwater catfish Mystus gulio (Hamilton & buchanan) and Mystus montanus (Jerdon) by artificial fertilization.
Inter-specific hybrids were produced between the threatened catfish species Mystus gulio x Mystus montanus. The differences in percentage of fertilization and hatching between control and interspecies were significant. The survival of hybrid was significantly lower (24.80 +/- 4.3%) when compared to control (95.1 +/- 3.5%). Time difference in yolk absorption by hybrid (73.30 h) was higher than that of control (72 h). When compared to interspecific fertilized egg the hatching time (24-25 h) and viability of larvae of the control were significantly better. In hybrids more deformed hatchlings (52.7 +/- 4.2 %) were noticed than the control (24.80 +/- 4.3%).
Centre for Aquaculture Research and Extension (CARE), St. Xavier's College (Autonomous), Palayamkottai 627002, India. haniffacare@gmail.com
M A
MA
Haniffa
M
M
Dhanaraj
C Muthu
CM
Ramakrishnan
R Arthi
RA
Manju
Y Ananth
YA
Kumar
S V Arun
SV
Singh
D000818:Animals; D002397:Catfishes / Q000196:embryology* / Q000235:genetics; D049109:Cell Proliferation; D003433:Crosses, Genetic; D004625:Embryo, Nonmammalian / Q000002:abnormalities / Q000166:cytology / Q000196:embryology*; D005260:Female; D005307:Fertilization in Vitro / Q000379:methods*; D005618:Fresh Water; D006824:Hybridization, Genetic; D008297:Male; D013997:Time Factors; D015053:Zygote / Q000166:cytology / Q000254:growth & development