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The south of Patagonia is characterized by its semi-arid weather and numerous small, temporary and permanent shallow ponds. The aquatic crustaceans of these water bodies are characterized by their endemism and species richness. The present study was done in the surroundings of Punta Arenas (53 de...


De Los Ríos Escalante, PatricioRogers, D. ChristopherRivera, Nelson[BRANCHINECTA GAINI DADAY, 1910 (BRANCHIOPODA, ANOSTRACA) AS A BIOINDICATOR OF OLIGOTROPHIC AND LOW CONDUCTIVITY SHALLOW PONDS IN SOUTHERN CHILEAN PATAGONIA]BRANCHINECTA GAINI DADAY, 1910 (BRANCHIOPODA, ANOSTRACA) AS A BIOINDICATOR OF OLIGOTROPHIC AND LOW CONDUCTIVITY SHALLOW PONDS IN SOUTHERN CHILEAN PATAGONIA

The inland water bodies of northern Chilean Patagonia (38-41 S) have many lakes, wetlands and ponds with different littoral and zooplanktonic crustacean assemblages. This study presents field observations of species associations sampled from shallow wetlands located in the urban zones of Valdivia...


De los Rios-Escalante, PatricioMuñoz Pedreros, AndrésMoeller, Patricia[A NULL MODEL TO STUDY COMMUNITY STRUCTURE OF MICROCRUSTACEAN ASSEMBLAGES IN NORTH PATAGONIAN URBAN WETLANDS (39-41 degrees S, CHILE)]A NULL MODEL TO STUDY COMMUNITY STRUCTURE OF MICROCRUSTACEAN ASSEMBLAGES IN NORTH PATAGONIAN URBAN WETLANDS (39-41 degrees S, CHILE)

In Chile there is an increased use of fungicides, especially in the central and southern parts of the country. The aim of this study was to test the sensitivity of two common zooplankton species, Daphnia pulex Leydig, 1860 and Tumeodiaptomus diabolicus (Brehm, 1935) to the fungicide carbendazim. ...


Encina Montoya, FranciscoDe Los Rios Escalante, PatricioSalazar, Katherine[ACUTE TOXICITY (LC50) OF A PESTICIDE (CARBENDAZIM) ON TWO NATIVE CRUSTACEAN ZOOPLANKTON SPECIES: DAPHNIA PULEX LEYDIG, 1860 AND TUMEODIAPTOMUS DIABOLICUS (BREHM, 1935) FROM NORTHERN PATAGONIAN LAKES (CHILE)]ACUTE TOXICITY (LC50) OF A PESTICIDE (CARBENDAZIM) ON TWO NATIVE CRUSTACEAN ZOOPLANKTON SPECIES: DAPHNIA PULEX LEYDIG, 1860 AND TUMEODIAPTOMUS DIABOLICUS (BREHM, 1935) FROM NORTHERN PATAGONIAN LAKES (CHILE)

Easy, economic, precise species authentication is currently necessary in many areas of research and diagnosis in molecular biology applied to conservation studies of endangered species. Here, we present a new method for the identification of three fox species of the Lycalopex genus in Chile. We d...


Anabalon, LeonardoEncina Montoya, FranciscoSanchez, PamelaSolano Solís, JaimeBenavente Muñoz, FelipeGuinez, BasilioOlivares, FlavioOberti Grassau, CarlosVega Aguayo, Rolando[High-resolution melting of the cytochrome B gene in fecal DNA: A powerful approach for fox species identification of the Lycalopex genus in Chile]High-resolution melting of the cytochrome B gene in fecal DNA: A powerful approach for fox species identification of the Lycalopex genus in Chile

The crustacean zooplankton in Chilean coastal lagoons has been poorly studied, and the scarce studies available would indicate the presence of low numbers of species, variable according to the degree of oligotrophy. The aim of the present study was to give a first characterization of crustacean z...


de los Rios, PatricioCarreno Abarzua Eriko[CRUSTACEAN ZOOPLANKTON COMMUNITIES IN SHALLOW COASTAL EPHEMERAL POOLS (NIGUE, 39 degrees S, ARAUCANIA REGION, CHILE)]CRUSTACEAN ZOOPLANKTON COMMUNITIES IN SHALLOW COASTAL EPHEMERAL POOLS (NIGUE, 39 degrees S, ARAUCANIA REGION, CHILE)

The zooplankton assemblages in Chilean lakes are characterized by their markedly low species numbers and dominance of calanoid copepods. Nevertheless, the effects of zooplanktivorous fish predation on zooplankton size in these communities have not yet been studied in detail. The aim of the presen...


De Los Rios-Escalante, Patricio[FISH PREDATION EFFECTS ON BODY LENGTH OF PLANKTONIC CLADOCERANS AND COPEPODS IN CHILEAN LAKES]FISH PREDATION EFFECTS ON BODY LENGTH OF PLANKTONIC CLADOCERANS AND COPEPODS IN CHILEAN LAKES

Sperm cryopreservation is an important tool for reproductive management; however, it has not been possible to perform this procedure for coho salmon. This study was designed to assess the effect of cryopreservation on sperm functional parameters, oxidative stress markers and fertilizing capacity ...


Sandoval Vargas, LeydyDumorne, KellyContreras, PabloFarias, Jorge G.Figueroa Villalobos, ElíasRisopatron, JennieValdebenito Isler, Iván[Cryopreservation of coho salmon sperm (Oncorhynchus kisutch): Effect on sperm function, oxidative stress and fertilizing capacity]Cryopreservation of coho salmon sperm (Oncorhynchus kisutch): Effect on sperm function, oxidative stress and fertilizing capacity

The objective of this study was to determine the effect of freezing on the function in Atlantic salmon Salmo salar spermatozoa. The semen was frozen in Cortland's medium+1.3M dimethyl sulphoxide+0.3M glucose+2% bovine serum albumin (final concentration) in a ratio of 1:3 (semen:cryoprotectant) as...


Figueroa Villalobos, ElíasValdebenito Isler, IvánMerino, O.Ubilla Madrid, AndreaRisopatron, J.Farias, J. G.[Cryopreservation of Atlantic salmon Salmo salar sperm: effects on sperm physiology]Cryopreservation of Atlantic salmon Salmo salar sperm: effects on sperm physiology

College students face numerous academic demands on a daily basis. The resources of the University and of the students to cope with these demands are essential to explain students' levels of well-being. The purpose of this investigation is to explore the role of day-level curiosity and meaning in ...


Garrosa, EvaManuel Blanco-Donoso, LuisCarmona-Cobo, IsabelMoreno-Jimenez, Bernardo[How do Curiosity, Meaning in Life, and Search for Meaning Predict College Students' Daily Emotional Exhaustion and Engagement?]How do Curiosity, Meaning in Life, and Search for Meaning Predict College Students' Daily Emotional Exhaustion and Engagement?

Two trials were established to evaluate the in vitro and ex vitro rooting of selected microshoots of two selected clones of Ugni molinae. In the in vitro experiment, nine treatments were compared, combination of three concentrations of Murashige and Skoog medium (MS) (1, 1/2 and 1/4 strength macr...


Rodríguez Beraud, MarioCarrillo Lopez, RubenChacón Fuentes, ManuelHormazabal Vasquez, NelsonTampe Perez, JocelyneTighe Neira, Ricardo[In vitro and ex vitro rooting of Ugni molinae Turcz. microshoots, a native species to Chile]In vitro and ex vitro rooting of Ugni molinae Turcz. microshoots, a native species to Chile

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