Abstract:In culture of the American bullfrog Lithobates catesbeiana, photoperiod is a crucial factor affecting productivity success. Here, the objective was to determine the effect of three photoperiods (high light [HL] = 12 h light [L] : 12 h dark [D]; medium light [ML] = 10 h L : 14 h D; low light [LL] = 8 h L : 16 h D) with different application times on the performance of bullfrog tadpoles. Tadpoles at Gosner stage 25 were subjected to seven different treatments: the HL photoperiod for 90 d (HL90; control); ML for … Show more
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