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The management and use of native species under laboratory conditions is the main difficult for species proposal for its use in bioassays. The present study showed the results about management under controlled conditions of Paratanytarsus grimmii (Diptera: Chironomidae), that is a parthenogenetic ...


Encina Montoya, FranciscoDe los Rios, P.Vega Aguayo, RolandoMardones Lazcano, Alfonso[Standard culture of Paratanytarsus grimmii Schneider, 1885 (Diptera: Chironomidae), for its use in toxicity bioassays]Standard culture of Paratanytarsus grimmii Schneider, 1885 (Diptera: Chironomidae), for its use in toxicity bioassays

Studies in Salvelinus alpinus, Arctic charr, indicate that it has a low capacity to hyposmorregulatory or adaption to sea in winter periods in Arctic waters. The investigation finds to determinate the rank optimum of salinity to can cultivate this species at Chile. The weight adequate was determi...


Mardones Lazcano, AlfonsoVega Aguayo, RolandoEncina Montoya, FranciscoPichara Morales, CristianGonzález Alfaro, KaterinaDe los Rios, P.Pena, B.[Assessing the growth of Arctic charr (Salvelinus alpinus) (Linnaeus, 1758) in four salinities, under experimental conditions]Assessing the growth of Arctic charr (Salvelinus alpinus) (Linnaeus, 1758) in four salinities, under experimental conditions

The current trend in world aquaculture is towards the diversification of cultures, mainly native species. The red cusk eel Genypterus chilensis is a native Chilean species of high gastronomic demand and seasonal exploitation that is projected as a candidate for the development of farming technolo...


Vega Aguayo, RolandoPradenas, MiguelManuel Estrada, JuanRamirez, DiegoValdebenito Isler, IvánMardones Lazcano, AlfonsoDantagnan Dantagnan, PatricioAlfaro, DenisEncina Montoya, FranciscoPichara Morales, Cristian[Evaluation and comparison of the efficiency of two incubation systems for Genypterus chilensis (Guichenot, 1848) eggs]Evaluation and comparison of the efficiency of two incubation systems for Genypterus chilensis (Guichenot, 1848) eggs

Deionized ammonium (NH3) acute toxicity (LC50-96h) in Patagonian blenny juveniles (Eleginops maclovinus) was assessed. Concentrations of deionized ammonium in salt water were prepared by using 24.09 +/- 2.1 g ammonium chloride (NH4Cl). Fish were exposed in triplicates to different ammonium concen...


Mardones Lazcano, AlfonsoGonzalez, M.Rivas Mancilla, C.Vega Aguayo, RolandoAugsburger, A.Encina Montoya, FranciscoDe los Rios, P.[Determination of acute toxicity of ammonium in juvenile Patagonian blenny (Eleginops maclovinus)]Determination of acute toxicity of ammonium in juvenile Patagonian blenny (Eleginops maclovinus)

The increased activity of aquaculture in Chile involves cultivation of salmonids, oysters mussels and other species such, and to a lesser extent species such as red abalone (Haliotis rufescens) and Japanese abalone (Haliotis discus hannai). The aim of this study was to evaluate the growth rate of...


Mardones Lazcano, AlfonsoAugsburger, AlbertoVega Aguayo, RolandoDe Los Ríos Escalante, Patricio[Growth rates of Haliotis rufescens and Haliotis discus hannai in tank culture systems in southern Chile (41.5 degrees S)]Growth rates of Haliotis rufescens and Haliotis discus hannai in tank culture systems in southern Chile (41.5 degrees S)

Galaxias maculatus is an osmeriform native fish of the Southern Hemisphere, in which the crystalline larvae is considered as a luxury delicacy, for this reason, it has been commercially exploited in Chile, Argentina and New Zealand. However, the fisheries have been rapidly decreasing due to the o...


Encina Montoya, FranciscoVega Aguayo, RolandoMardones Lazcano, AlfonsoRueda, TeresaTello, Alfredo[Characterization of whitebait (Galaxias maculatus) respiratory rates to optimize intensive culture carrying capacities]Characterization of whitebait (Galaxias maculatus) respiratory rates to optimize intensive culture carrying capacities

The Cautin river is located in the 137 years old Araucania region, Chile (38 degrees S), and is characterized by alterations through human interference due agriculture and towns in its surrounding basin, the presence of salmonids, and by its mixed regime, originated from snow melting in summer an...


Vega Aguayo, RolandoDe los Rios, P.Encina Montoya, FranciscoNorambuena, J. A.Barile Sanhueza, JuanMardones Lazcano, Alfonso[First report of inventory and role of macroinvertebrates and fish in Cautin river (38 degrees S, Araucania region Chile)]First report of inventory and role of macroinvertebrates and fish in Cautin river (38 degrees S, Araucania region Chile)

The present study assessed the percentage of survival and metamorphosis of larval stages of Caligus rogercresseyi (Boxshall and Bravo, 2000) nauplius I, nauplius II to and nauplius II to copepodite, conducting bioassays in triplicate with 50 larvae each, nauplius I or nauplius II, at temperature ...


Mardones Lazcano, AlfonsoGajardo, V.Pizarro, M. I.Augsburger, A.Vega Aguayo, RolandoEncina Montoya, FranciscoPichara Morales, CristianDe Los Ríos Escalante, Patricio[Evaluation of survival and metamorphosis of larvae of Caligus rogercresseyi (Boxshall and Bravo, 2000) (Crustacea, Copepoda) in Chile, depending on temperature, salinity and oxygen]Evaluation of survival and metamorphosis of larvae of Caligus rogercresseyi (Boxshall and Bravo, 2000) (Crustacea, Copepoda) in Chile, depending on temperature, salinity and oxygen

Genypterus chilensis is a marine fish of high gastronomic demand, whose capture has declined in recent years due to overfishing. In the development of the farming technology, high mortalities were obtained during egg incubation. The objective of this study is to contribute to the knowledge of fec...


Vega Aguayo, RolandoSepulveda, ClaraBarnert, MaicolMardones Lazcano, AlfonsoEncina Montoya, FranciscoOberti Grassau, CarlosRamirez, DiegoEstrada, Juan Manuel[Reproductive capacity of the red cusk-eel Genypterus chilensis (Guichenot, 1848) in captivity]Reproductive capacity of the red cusk-eel Genypterus chilensis (Guichenot, 1848) in captivity

The Cautin river is located in the Araucania region, Chile (38 degrees S), and is characterized by alterations through human interference in its surrounding basin, by the presence of introduced salmonids, and by its mixed regime, which originates from melting snow in summer and rains in winter. T...


Vega Aguayo, RolandoDe Los Rios-Escalante, PatricioEncina Montoya, FranciscoMardones Lazcano, Alfonso[ECOLOGY OF BENTHIC CRUSTACEANS IN THE CAUTIN RIVER (38 degrees S, ARAUCANIA REGION, CHILE)]ECOLOGY OF BENTHIC CRUSTACEANS IN THE CAUTIN RIVER (38 degrees S, ARAUCANIA REGION, CHILE)

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