Results 51 to 60 of about 382 (165)

Addressing conflict between fishermen and the Titicaca Grebe (Rollandia microptera) through diet analysis

open access: yesIbis, Volume 166, Issue 4, Page 1395-1403, October 2024.
Human–wildlife conflict is often a driver of species declines, and understanding the material basis of this conflict is the first step in addressing it. The Titicaca Grebe Rollandia microptera is an endangered endemic species found solely in the Lake Titicaca watershed of Peru and Bolivia, and has experienced population declines due to fisheries ...
D. A. Villar   +3 more
wiley   +1 more source

The Tissue‐Specific Eco‐Exposome: Differential Pharmaceutical Bioaccumulation and Disposition in Fish among Trophic Positions

open access: yesEnvironmental Toxicology and Chemistry, Volume 43, Issue 8, Page 1894-1902, August 2024.
Abstract Though bioaccumulation of pharmaceuticals by aquatic organisms continues to receive scientific attention, the internal disposition of these contaminants among different tissue compartments of fish species has been infrequently investigated, particularly among fish at different trophic positions. We tested a human to fish biological read‐across
Jaylen L. Sims   +8 more
wiley   +1 more source

Evaluation of the Health Status of the Silverside (Odontesthes bonariensis) at a RAMSAR Site in South America

open access: yesBulletin of Environmental Contamination and Toxicology, 2017
The objective of this work was to evaluate the health status of an economic and ecologically important fish species from Mar Chiquita Lake, a RAMSAR site located in Cordoba, Argentina, relative to the levels of selected persistent organic pollutants (POPs) in lake water and fish tissues.
Ballesteros, Maria Laura   +4 more
openaire   +3 more sources

Modeling potential consequences of climate‐driven sex reversal on Southern and Summer Flounder population dynamics

open access: yesMarine and Coastal Fisheries, Volume 16, Issue 2, April 2024.
Abstract Objective We investigate the interacting effects of fishery selectivity and sexual dimorphism by using the fisheries for Southern Flounder Paralichthys lethostigma and Summer Flounder P. dentatus as case studies. In both species, females are larger than males, and temperature‐sensitive sex determination can lead to an increased proportion of ...
H. M. Conrad, H. K. Kindsvater
wiley   +1 more source

Desarrollo de la sagitta en juveniles y adultos de Odontesthes argentinensis (Valenciennes, 1835) y O. bonariensis (Valenciennes, 1835) de la provincia de Buenos Aires, Argentina (Teleostei: Atheriniformes) Development of the sagitta in young and adults of Odontesthes argentinensis (Valenciennes, 1835) and Odontesthes bonariensis (Valenciennes, 1835) from Buenos Aires province, Argentina (Teleostei: Atheriniformes)

open access: yesRevista Chilena de Historia Natural, 2005
Se describió el desarrollo del otolito Sagitta de juveniles y adultos de Odontesthes argentinensis procedentes de Punta Rasa (36°22' S) y Miramar (38°16' S) y de Odontesthes bonariensis de la Laguna de Chascomús (35° 36' S).
ANDREA D TOMBARI   +2 more
doaj  

Observations on the Infection by Kudoa sp. (Myxozoa, Multivalvulida) in fishes caught off Rio Grande, Rio Grande do Sul State, Brazil

open access: yesActa Scientiarum: Biological Sciences, 2016
It is reported the parasitization of Kudoa sp. (Myxozoa, Multivalvulida) within the somatic muscles of the fish Odontesthes bonariensis (Valenciennes, 1835), Micropogonias furnieri (Desmarest, 1823) and Mugil liza Valenciennes, 1836, captured off Rio ...
Jorge Costa Eiras   +3 more
doaj   +1 more source

Sedimentary evolution and lake level fluctuations of Urmia Lake (north‐west Iran) over the past 50 000 years; insights from Artemia faecal pellet records

open access: yesSedimentology, Volume 71, Issue 3, Page 887-911, April 2024.
Abstract A 25 m long sediment core from hypersaline Urmia Lake (north‐west Iran) was studied for the Late Quaternary depositional history and palaeoclimate variations using the abundance and compositional characteristics of Artemia faecal pellets. Sediment analysis is supported by scanning electron microscopy – energy dispersive X‐ray spectroscopy ...
Selma Sarı   +6 more
wiley   +1 more source

Does stress make males? An experiment on the role of glucocorticoids in anuran sex reversal

open access: yesJournal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 341, Issue 2, Page 172-181, March 1, 2024.
Abstract Environmentally sensitive sex determination may help organisms adapt to environmental change but also makes them vulnerable to anthropogenic stressors, with diverse consequences for population dynamics and evolution. The mechanisms translating environmental stimuli to sex are controversial: although several fish experiments supported the ...
Veronika Bókony   +8 more
wiley   +1 more source

ALIMENTACION DE ODONTESTHES BONARIENSIS (CUVIER Y VALENCIENNES 1835) (ATHERINIFORMES, ATHERINIDAE) EN LA LAGUNA SALADA DE MAR CHIQUITA (CORDOBA, ARGENTINA) FEEDING OF ODONTESTHES BONARIENSIS (CUVIER Y VALENCIENNES 1835 1835) (ATHERINIFORMES, ATHERINIDAE) IN THE SALINE LAKE OF MAR CHIQUITA (CORDOBA, ARGENTINA

open access: yesGayana, 2001
Se analizó el contenido estomacal de 258 individuos de pejerrey Odontesthes bonariensis, con el objeto de estudiar los hábitos alimentarios de esta especie en un ambiente de características particulares debido a su extensión y elevada salinidad.
Luis Sagretti   +1 more
doaj  

Efeito da suplementação de metionina e/ou lisina no crescimento e na sobrevivência de alevinos de peixe-rei (Odontesthes bonariensis) Effect of methionine and lysine supplementation on growth and survival of pejerrey (Odontesthes bonariensis) fingerlings

open access: yesRevista Brasileira de Zootecnia, 2004
Para avaliar o efeito da suplementação de metionina e lisina sobre o desempenho de alevinos de peixe-rei (Odontesthes bonariensis), estabeleceu-se um experimento completamente casualizado com quatro tratamentos.
Sérgio Renato Noguez Piedras   +2 more
doaj   +1 more source

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