Biología reproductiva de Lithobates catesbeianus Shaw, 1802 en condiciones semi-controladas
Keywords:
Lithobates catesbeianus, biología reproductiva, desarrollo-embrionarioAbstract
Lithobates catesbeianus has been introduced in several countries due its meat nutritional value derived from the high protein content. However, the conducted studies in Mexico about the life story from this species, contribute extremely generalized information, this is why the objective from this research was to generate information about the breeding season, the sperm viability, to describe the phases of embryo development, and to evaluate the eclosion and survival under semi-controlled conditions which could constitute a base for future embryological, reproductive and aquaculture studies of this anura of commercial importance. In order to, some reproductive characteristics were studied, as the gonadic maturity cycle and the sperm viability. On the other hand, artificial fertilization and the description of embryo development were carried out. The maximum value for the gonadosomatic index (GSI) was 34 in breeder female, while the highest value for the hepatosomatic index (HI) was 3.2, with a sperm viability of 99.9%. The embryo development included 20 stages from the gametic period to the hatching with 90 hours and 38 minutes of length; likewise, 90.4% of eclosion and 99.9% of the embryo survival were obtained.
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References
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