Results 11 to 20 of about 1,122 (129)

Microchemical provenancing of prey remains in cormorant pellets reveals the use of diverse foraging grounds. [PDF]

J Wildl Manage, 2022
Microchemical provenancing was successfully applied to otoliths exposed to digestion by piscivorous birds and it was possible to clarify on a small scale from which waterbodies or habitat clusters the birds obtain their food. By the use of prey provenancing, site‐specific management plans can be developed and the effect of management measures on ...
Oehm J, Zitek A, Thalinger B, Tchaikovsky A, Irrgeher J, Prohaska T, Traugott M.   +6 more
europepmc   +2 more sources

Parasites in reineta (Brama australis) marketed in the Maule Region, Chile

Revista de Investigaciones Veterinarias del Perú, 2021
           The aim of this study was to determine the presence of parasite larvae of zoonotic importance in reineta (Brama australis) and marinated fish (“ceviche”) prepared with this species, sold in south-central Chile (city of Talca).
Machuca, Álvaro, Quintanilla, María Soledad, Cabezas, Catalina, Ulloa, Julio, Silva, Alex, Morales, Pamela   +5 more
openaire   +2 more sources

Parásitos en reinetas (Brama australis) comercializadas en la región del Maule, Chile

Revista de Investigaciones Veterinarias del Perú, 2021
            El objetivo de este trabajo fue determinar la presencia de larvas de parásitos de importancia zoonótica en reinetas (Brama australis) frescas y en ceviches preparados con esta especie que son vendidos en el centro-sur de Chile (ciudad de Talca).
Álvaro Machuca, María Soledad Quintanilla, Catalina Cabezas, Julio Ulloa, Alex Silva, Pamela Morales   +5 more
openaire   +1 more source

A pilot tagging program on southern rays bream (Brama australis): methodology and preliminary recaptures

Latin American Journal of Aquatic Research, 2023
The southern rays bream (Brama australis) is a highly migratory, epi-mesopelagic species supporting an important artisanal fishery off central-southern Chile. Despite its importance, several questions exist about this species's demography and migratory routes. The first step in understanding the migratory behavior of B.
Rodrigo Wiff, Andrés Flores, Santiago Gacitúa, Carl R. Donovan, T. Mariella Canales, Mauricio Ahumada, Dante Queirolo   +6 more
openaire   +2 more sources

Periphyton and benthivorous fish affect charophyte abundance and indicate hidden nutrient loading in oligo‐ and mesotrophic temperate hardwater lakes

Freshwater Biology, Volume 68, Issue 2, Page 312-324, February 2023., 2023
Abstract Charophytes are a key group of submerged macrophytes in temperate hardwater lakes, but have declined or been replaced by angiosperms as a result of eutrophication for more than 100 years. At present, this process is continuing in many European lakes despite an overall reduced nutrient loading.
Marta Maria Alirangues Nuñez, Andreas Hussner, Rüdiger Mauersberger, Uwe Brämick, Daniel Hühn, Liang He, Sabine Hilt   +6 more
wiley   +1 more source

Multiple sampling methods to develop indices of mid‐trophic levels abundance in open ocean ecosystems

Limnology and Oceanography: Methods, Volume 20, Issue 12, Page 789-810, December 2022., 2022
Abstract Mid‐trophic level (MTL) organisms play a key role in the sub‐Antarctic ecosystem food web, linking primary producers and tertiary consumers transferring energy across trophic levels. In this region, the relative abundance of MTLs has been monitored using single‐frequency acoustic data collected opportunistically in a time series of trawl ...
Pablo C. Escobar‐Flores, Moira Décima, Richard L. O'Driscoll, Yoann Ladroit, Jim Roberts   +4 more
wiley   +1 more source

Trophic structure of a pond community dominated by an invasive alien species: Insights from stomach content and stable isotope analyses

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 31, Issue 4, Page 948-963, April 2021., 2021
Abstract Invaders affect native species across multiple trophic levels, influencing the structure and stability of freshwater communities. Based on the ‘trophic position hypothesis’, invaders at the top of the food web are more harmful to native species via direct and indirect effects than trophically analogous native predators are. However, introduced
Alessandra Maria Bissattini, Phillip J. Haubrock, Vincenzo Buono, Paride Balzani, Nicolò Borgianni, Luca Stellati, Alberto Francesco Inghilesi, Lorenzo Tancioni, Marco Martinoli, Elena Tricarico, Leonardo Vignoli   +10 more
wiley   +1 more source

Parasite body volume and infracommunity patterns in the southern pomfret Brama australis (Pisces: Bramidae) [PDF]

Revista chilena de historia natural, 2002
The patterns of infracommunity descriptors (diversity, dominance, abundance) are compared when calculated with the number and body volume of the parasites in a sample of 26 southern pomfrets Brama australis collected in the area off Talcahuano, Chile.
GEORGE-NASCIMENTO, MARIO, GARCÍAS, FÉLIX, MUÑOZ, GABRIELA   +2 more
openaire   +2 more sources

Spatial and bathymetric occurrence of Brama australis off the Chilean Coast and in the South Pacific Ocean [PDF]

Revista de biología marina y oceanografía, 2017
Data about Brama australis distribution along the Chilean coast and the South Pacific is scarce and varied. The aim of this study was to provide new information concerning the spatial and bathymetric occurrence of B. australis in the Southern Pacific Ocean.
San Martín, Marcelo A, Leal, Elson, Canales, T. Mariella   +2 more
openaire   +4 more sources

Age, growth and mortality of southern rays bream Brama australis (Bramidae) off the southeastern Pacific coast [PDF]

Revista de biología marina y oceanografía, 2013
The age and growth function and mortality were determined for southern rays bream Brama australis caught in commercial trawls off the coast of central Chile....
Oyarzún, Ciro, Cortés, Nelson, Leal, Elson   +2 more
openaire   +2 more sources