Results 201 to 210 of about 1,928 (232)
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Journal of Applied Ichthyology, 2007
Summary Reproductive aspects of a peripheral population of Galaxias maculatus are described and the relationship with the physiology and handling of energetic reserves under marginal environmental conditions is investigated. The G. maculatus population of Tierra del Fuego has an extended reproductive season, with differences in timing and duration ...
C. C. Boy, E. Morriconi, J. Calvo
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Summary Reproductive aspects of a peripheral population of Galaxias maculatus are described and the relationship with the physiology and handling of energetic reserves under marginal environmental conditions is investigated. The G. maculatus population of Tierra del Fuego has an extended reproductive season, with differences in timing and duration ...
C. C. Boy, E. Morriconi, J. Calvo
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Seventeen novel microsatellite markers for the southern hemisphere fish Galaxias maculatus
Conservation Genetics Resources, 2014Galaxias maculatus is a widely distributed fish with diadromous and resident populations throughout Gondwanan regions. We present 17 novel microsatellite markers that were tested on 44 individuals from one lacustrine population in Patagonia. We found ten poly- morphic markers and seven monomorphic markers in the population under analysis. The number of
Ivan Vera-Escalona +3 more
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Morphology and Ultrastructure of Puye (Galaxias maculatus) Spermatozoa
Acta ZoologicaABSTRACTThis study characterises basic seminal and sperm parameters of puye (Galaxias maculatus maculatus), including sperm concentration, seminal plasma osmolality and cell viability. In addition, it provides a detailed description of sperm ultrastructure. Wild males (n = 21) were captured in southern Chile.
Leydy Sandoval‐Vargas +7 more
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Impact of a Caged-Trout Farm on Parasites of Galaxias maculatus in Lake Moreno, Southern Argentina
Journal of Parasitology, 2005The present study was conducted to determine the impact of a caged-trout farm on the helminth parasites of the wild fish puyen chico (Galaxias maculatus) in Lake Moreno, southern Argentina. Samples of water, fish (G. maculatus), and snails (Heleobia hatcheri) were taken at 4 sampling stations in January 2001.
Jorge E, Revenga +2 more
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Journal of Fish Biology, 2009
The physiological challenges incurred during the transition from sea to fresh water and the constraints they place on the rate at which the common galaxiid Galaxias maculatus and the climbing galaxiid Galaxias brevipinnis can migrate from marine to freshwater habitats were examined.
C A, Jung, N C, Barbee, S E, Swearer
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The physiological challenges incurred during the transition from sea to fresh water and the constraints they place on the rate at which the common galaxiid Galaxias maculatus and the climbing galaxiid Galaxias brevipinnis can migrate from marine to freshwater habitats were examined.
C A, Jung, N C, Barbee, S E, Swearer
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Migration of galaxias maculatus (Jenyns) (galaxiidae, pisces) in Valdivia Estuary, Chile
Hydrobiologia, 1973A migratory pattern ofG. maculatus as a diadromic and marginally catadromic, is similar to that in New Zealand and Australia. Their migratory relationship with the sea suggests that their route of dispersal in the tertiary might have been transantartic (western Antartica) and not caused by the “West Wind Drift” as suggested by other authors.
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2022
Protected areas (PAs) have become the cornerstone management strategy for terrestrial and increasingly marine biodiversity conservation, yet freshwater protected areas (FPAs or freshwater reserves) remain rare. This is surprising considering that freshwater ecosystems, and the biodiversity they support, are among the most threatened worldwide.
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Protected areas (PAs) have become the cornerstone management strategy for terrestrial and increasingly marine biodiversity conservation, yet freshwater protected areas (FPAs or freshwater reserves) remain rare. This is surprising considering that freshwater ecosystems, and the biodiversity they support, are among the most threatened worldwide.
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Predator-induced reaction patterns of landlocked Galaxias maculatus to visual and chemical cues
Aquatic Ecology, 2010Anti-predator behaviour often represents a trade-off between the benefits of reducing predation risk and the drawbacks of limiting access to resources (e.g. food availability, mating and nesting sites). The effectiveness of avoidance behaviour relies on the ability to detect predator cues, which may provide reliable information on predation risk. Using
Daniela Milano +2 more
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Fish swimming speed variability at constant flow: Galaxias maculatus
New Zealand Journal of Marine and Freshwater Research, 2007Abstract Digital videography was used to study the swimming performance of the adult fish Galaxias maculatus in a flume at fixed flows. Instantaneous fish swimming velocities varied about the mean flume velocity and these variations in swimming speed were found to increase ...
David R. Plew +4 more
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Zoogeography of Galaxias maculatus in South America
Copeia, 1974A. E. Gosztonyi, R. M. McDowall
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