TY - JOUR
T1 - Reproductive cycle and sexual maturity of Sphoeroides annulatus (Jenyns, 1842) (Tetraodontiformes, Tetraodontidae) from the coast of Mazatlan, Sinaloa, Mexico
AU - Sánchez-Cárdenas, R.
AU - Arellano-Martínez, M.
AU - Valdez-Pineda, M. C.
AU - Morán-Angulo, R. E.
AU - Ceballos-Vázquez, B. P.
PY - 2011/10
Y1 - 2011/10
N2 - The reproduction of any fish species may be influenced by environmental factors, knowledge of which is required for an adequate control of the reproductive process to improve culture practices. Thus, the reproduction of a wild population of bullseye puffer, Sphoeroides annulatus (Jenyns, 1842), and the influence of temperature, photoperiod, lunar cycle and tide level were analyzed. Ovarian ripeness is asynchronous, and the ovary may ripen again at least once following spawning. Testes also display an asynchronous ripeness, but once sexual maturity is attained, spermatozoa are continually produced and released. The reproduction is highly seasonal, with an intense spawning period during the spring-summer, when the sea surface temperature is 22.5-30.9°C and a 11-14h photoperiod. The observations suggest that the timing of spawning is synchronized by a semi-lunar cycle together with the rise of the average tide level. Size at first maturation was similar for females (28.2cm TL) and males (28.6cm TL). However, some specimens may start their gonad maturation when are as small as 19cm TL.
AB - The reproduction of any fish species may be influenced by environmental factors, knowledge of which is required for an adequate control of the reproductive process to improve culture practices. Thus, the reproduction of a wild population of bullseye puffer, Sphoeroides annulatus (Jenyns, 1842), and the influence of temperature, photoperiod, lunar cycle and tide level were analyzed. Ovarian ripeness is asynchronous, and the ovary may ripen again at least once following spawning. Testes also display an asynchronous ripeness, but once sexual maturity is attained, spermatozoa are continually produced and released. The reproduction is highly seasonal, with an intense spawning period during the spring-summer, when the sea surface temperature is 22.5-30.9°C and a 11-14h photoperiod. The observations suggest that the timing of spawning is synchronized by a semi-lunar cycle together with the rise of the average tide level. Size at first maturation was similar for females (28.2cm TL) and males (28.6cm TL). However, some specimens may start their gonad maturation when are as small as 19cm TL.
UR - http://www.scopus.com/inward/record.url?scp=80052860577&partnerID=8YFLogxK
U2 - 10.1111/j.1439-0426.2011.01754.x
DO - 10.1111/j.1439-0426.2011.01754.x
M3 - Artículo
SN - 0175-8659
VL - 27
SP - 1190
EP - 1196
JO - Journal of Applied Ichthyology
JF - Journal of Applied Ichthyology
IS - 5
ER -