Results 61 to 70 of about 14,792 (222)

Squamate ventricular cardiomyocytes: Ploidy, proliferation, and heart muscle cell size in the leopard gecko (Eublepharis macularius)

open access: yesDevelopmental Dynamics, Volume 254, Issue 11, Page 1203-1220, November 2025.
Abstract Background While heart function is broadly conserved across vertebrates, the cellular phenotype of muscle cells (cardiomyocytes) varies across taxa and throughout ontogeny. Emerging evidence suggests that some attributes may correlate with the capacity for spontaneous cardiomyocyte replacement following injury.
Kathy Jacyniak   +4 more
wiley   +1 more source

First record of microplastics in two freshwater fish species (Iheringhthys labrosus and Astyanax lacustris) from the middle section of the Uruguay River, Brazil

open access: yes, 2020
Aim: The aim was to analyze the incidence of microplastics in the diet of fish in the middle Uruguay River. Methods: The present work analyzed the gastrointestinal content of two species: Astyanax lacustris and Iheringichthys labrosus.
T. Santos   +5 more
semanticscholar   +1 more source

Nuevo hospedador de Lernaea cf. cyprinacea (L.) (Copepoda: Lernaeidae) en Argentina [PDF]

open access: yes, 2014
Se registra por primera vez a Lernaea cf. cyprinacea (L.), copépodo ectoparásito en Astyanax hermosus Miquelarena, Protogino y López, 2005 (Teleostei: Characiformes: Characidae). El hospedador fue capturado en el río Cosquín (Depto.
Ramallo, Geraldine   +1 more
core  

Evolutionary history of Middle American Rhamdia (Siluriformes: Heptapteridae) inferred from comparative mitogenomic data: Insights on historical biogeography and cave colonization in the group

open access: yesJournal of Systematics and Evolution, Volume 63, Issue 6, Page 1501-1518, November 2025.
Investigating the systematics and biogeography of Neotropical catfishes of the genus Rhamdia refined phylogenetic hypotheses, including deep paraphyly of Rhamdia laticauda, supported northward dispersal catalyzed by emergence of the Panamanian Isthmus and imply that cave colonization is widespread, convergent, and recent, with established cave‐dwelling
Jairo Arroyave   +6 more
wiley   +1 more source

At the edge of darkness: A framework for the evolution of visual systems in dim light

open access: yesFunctional Ecology, Volume 39, Issue 10, Page 2626-2636, October 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Light is an important biological cue for all living things. For animals, where many behaviours are driven by sensory input from the eyes, light is also a critical environmental feature shaping animal eye evolution, with the intensity of light (i.e.
Megan L. Porter
wiley   +1 more source

Critical insights into the potential risks of antipsychotic drugs to fish, including through effects on behaviour

open access: yesBiological Reviews, Volume 100, Issue 5, Page 1994-2019, October 2025.
ABSTRACT Antipsychotic drugs (APDs) are a diverse class of neuroactive pharmaceuticals increasingly detected in surface and ground waters globally. Some APDs are classified as posing a high environmental risk, due, in part, to their tendency to bioaccumulate in wildlife, including fish.
Gabrielle Wasser‐Bennett   +4 more
wiley   +1 more source

Charles M. Breder, Jr.: Atlantis Expedition, 1934 [PDF]

open access: yes, 2004
Dr. Charles M. Breder participated on the 1934 expedition of the Atlantis from Woods Hole, Massachusetts to Panama and back and kept a field diary of daily activities. The Atlantis expedition of 1934, led by Prof. A. E.
Cantillo, A. Y.   +3 more
core  

Helminth parasites of alien freshwater fishes in Patagonia (Argentina) [PDF]

open access: yes, 2018
A survey of the helminth parasites of alien freshwater fishes from Argentinean Patagonia is presented, based on samples taken from 2010 to 2017 and including previous published records.
Flores, Verónica Roxana   +5 more
core   +1 more source

Bibliografía de los peces de agua dulce de Argentina y Uruguay : Suplemento 1982 [PDF]

open access: yes, 1982
Fil: López, Hugo Luis. División Zoología Vertebrados, Museo de La Plata, UNLPFil: Menni, Roberto Carlos. División Zoología Vertebrados, Museo de La Plata, UNLPFil: Ringuelet, Raúl Adolfo. Instituto de Limnología Dr. Raúl A. Ringuelet (ILPLA); Facultad de
López, Hugo Luis   +2 more
core  

Hypocretin underlies the evolution of sleep loss in the Mexican cavefish [PDF]

open access: yes, 2018
The duration of sleep varies dramatically between species, yet little is known about the genetic basis or evolutionary factors driving this variation in behavior. The Mexican cavefish, Astyanax mexicanus, exists as surface populations that inhabit rivers,
Duboue, Erik R.   +5 more
core   +1 more source

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