Reproductive performance of the Mesa silverside(Chirostoma jordani Woolman,1894)under natural and controlled photoperiods  

作　　者：JOSÉLUIS ARREDONDO-FIGUEROA LAURA GEORGINA NÚÑEZ-GARCÍA PALOMA ADRIANA HEREDIA-GUZMÁN JESÚS T.PONCE-PALAFOX 

机构地区：[1]Posta Zootécnica,Departamento de Zootecnia,Centro de Ciencias Agropecuarias,Universidad Autónoma de Aguascalientes,Jesús María,Aguascalientes,México [2]Planta Experimental de Producción Acuícola,Departamento de Hidrobiología,CBS,Universidad Autónoma Metropolitana Iztapalapa,México,D.F [3]Facultad de Estudios Superiores Iztacala,Universidad Nacional Autónoma de México,Estado de México,México [4]Centro de Innovación y Transferencia Tecnológica CENITT,Posgrado CBAP,Escuela Nacional de Ingeniería Pesquera,Universidad Autónoma de Nayarit,Tepic,Nayarit,México

出　　处：《BIOCELL》2012年第3期105-111,共7页生物细胞（英文）

摘　　要：Chirostoma jordani is a native annual species inhabiting lacustrine waters of the Central Mexico Plateau.It is widely distributed and is currently facing high environmental pressures.Five experi-ments were performed to study the reproductive performance of this species.Four of the experiments were conducted in 270-L indoor recirculation tanks.Two males and one female at the first stage of reproduction were included in each test.A photoperiod of 14 light hours and 10 dark hours was used.In a fifth experiment,10 females and 15 males were kept in an outdoor 3,000-L recirculation tank under natural photoperiod.The number of spawns,fertilised eggs and 30-day-old juveniles were counted and the survival rate was calculated.The results indicated significant differences(P<0.05)between treatments.Higher spawn numbers and greater egg production were observed under controlled photoperiod,and higher numbers of juveniles and a higher survival rate were observed under natural photoperiod.The trials exhibited different patterns of egg produc-tion during the experiment.The egg production in the natural-photoperiod trials followed a polynomial curve model.In contrast,the trials under the controlled photoperiod showed an irregular pattern of increases and decreases in egg production.

关 键 词：BREEDING Atherinopsidae EGGS JUVENILES survival rate 

分 类 号：F42[经济管理—产业经济]