Reproductive biology of Goodea atripinnis (Jordan, 1880) (cyprinodontiformes: goodeidae) under controlled conditions
Journal Title: Journal of Experimental Biology and Agricultural Sciences - Year 2016, Vol 4, Issue 0
Abstract
The study was conducted to investigate the reproductive biology of Goodea atripinnis under controlled conditions in the Aguascalientes state. Fifty wild brooders were collected, acclimatized and reared to obtain two F1 that were cultured until reaching sexual maturation. Then, two males and one female were placed in 40-L aquariums maintained at an average water temperature of 24.4 ± 0.37°C under a 14 h light: 10 h dark photoperiod. The courtships description was obtained by observations and digital photographs. Furthermore, the gestation period, fertility, total weight (TW, g) and total length (TL, mm) of the both F1 offspring were recorded. Additionally, the TL and TW distributions, TL-TW relationship, sex ratio and size at first maturity were evaluated in each F1. During courtship, both brooders performed a quiver display before copulating. The females gave birth at eight and nine months of age. Females compared with males, reached a higher TW and TL. The TW-TL relationship differed significantly between the F1 sexes. The male: female sex ratio was 2.7:1.0 in the first F1 and 0.96:1.0 in the second one. The mature females of both F1 displayed an average of 24 offspring, with a mean TL of 15.4 ± 1.3 mm and TW of 0.040 ± 0.013 g. During their first year of life, the females gave birth twice with a 45-day interval. The sexual maturity size (L50) of brooders averaged 42.0 mm for males and 47.9 mm for females. The results demonstrated a high reproductive potential in G. atripinnis.
Authors and Affiliations
Joao Roberto Silva-Santos, Ma. Consolacion Martinez-Saldana, Roberto Rico-Martinez, Jose Luis Gomez-Marquez
Keywords
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- EP ID EP427801
- DOI 10.18006/2016.4(2).180.193
- Views 43
- Downloads 0
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