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

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BIOCELL 2012年第3期36卷 105-111页

作者： JOSÉLUIS ARREDOnDO-FIGUEROA laura georgina núñez-garcía PALOMA ADRIAnA HEREDIA-GUZMÁn JESÚS T.POnCE-PALAFOX Posta Zootécnica Departamento de ZootecniaCentro de Ciencias AgropecuariasUniversidad Autónoma de AguascalientesJesús MaríaAguascalientesMéxico Planta Experimental de Producción Acuícola Departamento de HidrobiologíaCBSUniversidad Autónoma Metropolitana IztapalapaMéxicoD.F Facultad de Estudios Superiores Iztacala Universidad Nacional Autónoma de MéxicoEstado de MéxicoMéxico Centro de Innovación y Transferencia Tecnológica CEnITT Posgrado CBAPEscuela Nacional de Ingeniería PesqueraUniversidad Autónoma de NayaritTepicNayaritMéxico

Chirostoma jordani is a native annual species inhabiting lacustrine waters of the Central Mexico *** is widely distributed and is currently facing high environmental *** experi-ments were performed to study the reproductive performance of this *** of the experiments were conducted in 270-L indoor recirculation *** 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 *** a fifth experiment,10 females and 15 males were kept in an outdoor 3,000-L recirculation tank under natural *** number of spawns,fertilised eggs and 30-day-old juveniles were counted and the survival rate was *** results indicated significant differences(Pn *** 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 *** trials exhibited different patterns of egg produc-tion during the *** egg production in the natural-photoperiod trials followed a polynomial curve *** 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

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Using a Macroalgal Functional Form Approach to Assess the Level of Disturbance of Seagrass Meadows in Bahía of nuevitas,Cuba(2000-2002)

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American Journal of Plant Sciences 2019年第11期10卷 2020-2033页

作者： Rubén Cabrera Jhoana Diaz-Larrea Schery Umanzor laura georgina núnez garcia Gabinete de Arqueologia Oficina del Historiador de la CiudadHabana ViejaCuba Departamento de Hidrobiologia Universidad Autonoma Metropolitana-IztapalapaMexico CityMexico Department of Ecology&Evolutionary Biology University of ConnecticutStamfordCTUSA

A study on the spatial and seasonal variations of the associate macroalgae and epiphytes of Thalassia testudinum was carried out in Bahía de nuevitas. Sixty-two species were identified: 3 Cyanophyta, 25 Chlorophyta, 8 Phaeophyceae, 23 Rhodophyta and 3 Magnoliophyta, with two new records for Cuba and 43 for the area. The differences in the specific composition of the macroalgae communities are determined by a space component related to the type of affectation in each area. The morpho-functional groups of macroalgae in the station with more nutrient influence were mainly foliaceous and filamentous. In the stations far from the city, the predominant morpho-types were the leathery and articulate calcareous indicators of lower nitrification levels. The abundance and diversity of macroalgae in the site affected by fisheries were lower due to the damage by bottom trawls. Seasonal variations were found in the relative abundance of the species, not in the diversity, which makes evident seasonal changes in the structure of the seaweeds, where some species replace others in the community.

关键词： Cuba Epiphytes Thalassia Morpho-Functional Groups Seaweeds

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Performance of Brooders,Fry and Growth of the nile Tilapia(Oreochromis niloticus)Cultured in an Experimental Recirculating Aquaculture System

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Agricultural Sciences 2015年第9期6卷 1014-1022页

作者： Jose Luis Arredondo-Figueroa laura georgina nunez-garcía Jesus T.Ponce-Palafox Irene de Los Angeles Barriga-Sosa Unidad Acuícola Departamento de ZootecniaUniversidad Autonoma de AguascalientesAguascalientesMéxico Planta Experimental de Produccion Acuicola Division de Ciencias Biológicas y de la SaludDepartamento de HidrobiologíaUniversidad Autónoma Metropolitana IztapalapaMéxicoD.F.México Centro de Innovación y Transferencia Tecnológica CEnITT Posgrado CBAPEscuela Nacional de Ingeniería PesqueraUniversidad Autónoma de NayaritTepicMéxico

We present results of a long-term study aimed to optimize nile tilapia O. niloticus production in a recirculating aquaculture system (RAS) in México City. Three experiments were evaluated: 1) fry production;2) production of masculinized fries;and 3) assessment of growth under three different densities (10, 30 and 75 fish/m3). The broodstock produced on average 2400 ± 600 fry every 15 days during six months, with a total production of 28,800 ± 2000. One hundred percent males were produced in 274-L raceways in an eight-week period. The obtained results in fish production in the RAS system indicated variations related to density. A daily growth rate of 3.6 g/day was registered with a density of 10 fish/m3, 0.9 g/day in 30 fish/m3 and 0.4 g/day in 75 fish/m3. This information could be useful for production purposes in this type of systems.

关键词： Tilapia Oreochromis niloticus Intensive Culture Sex Reversal Growth Densities

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Evaluation of Growth Performance of a Genetically Characterized F1 Rainbow Trout,Oncorhynchus mykiss in a Recirculating Aquaculture System

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Agricultural Sciences 2017年第7期8卷 716-728页

作者： Jose Luis Arredondo-Figueroa nayeli Ismene Armendáriz-Sáenz laura georgina núnez-garcía Jesús Trinidad Ponce-Palafox Irene De Los Angeles Barriga-Sosa Posta Zootécnica Departamento de ZootecniaCentro de Ciencias AgropecuariasUniversidad Autónoma de AguascalientesJesús MaríaMéxico Planta experimental de Producción Acuícola Departamento de HidrobiologíaDivisión de Ciencias Biológicas y de la SaludUniversidad Autónoma Metropolitana IztapalapaIztapalapaMéxico Escuela nacional de Ingeniería Pesquera Unidad de Bioingeniería CosteraUniversidad Autónoma de NayaritSan BlasMéxico

The growth performance of a selected F1 rainbow trout genetically characterized as polymorphic with locus Omy207UoG (nA = 13, PIC = 0.891, HE = 0.9003) was evaluated in a recirculating aquaculture system (RAS). A set of 157 rainbow trout of 37.8 g of mean body weight and 14.6 cm mean total length per tank, were introduced in each of six fish tank of 5 m3 connected to a recirculating aquaculture system (RAS). The trout was rearing during 317 days. Growth performance indicators and water quality were evaluated during the experiment. The genetically selected F1 rainbow trout showed a tendency towards homogeneity in growth performance along the culture period, reaching a mean total weight of 552.2 g. The length-weight relationship indicated an isometric growth (>3.0). This study presents the basis to establish a long-term marker-assisted selection program for rainbow trout culture in a subtropical region.

关键词： Rainbow Trout Oncorhynchus mykiss Genetically Characterized Growth Performance Water Quality

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