Results 51 to 60 of about 722 (134)
A Recessive oca2 Mutation Underlies Albinism in Xiphophorus Fish
Pigment Cell &Melanoma Research, Volume 39, Issue 4, July 2026.Genetic mapping of albino Xiphophorus hellerii showed that albinism is associated with a recessive oca2 variant. This variant leads to early termination of the Oca2 protein. This study identifies a novel model system to investigate conserved mechanisms of pigmentation biology.
Yanting Xing +5 more
wiley +1 more source
, 2006 Astyanax saguazu: MLP 9603, holotype, 63.0 mm, Argentina, Misiones, Río Uruguay basin, arroyo Once Vueltas.
Juan Marcos Mirande +2 more
openaire +3 more sources
Biological Reviews, Volume 101, Issue 3, Page 1491-1510, June 2026.ABSTRACT Basal and standard metabolic rate (BMR and SMR) are cornerstones of physiological ecology and are assumed to be relatively fixed intrinsic properties of organisms that represent the minimum energy required to sustain life. However, this assumption is conceptually flawed. Many core maintenance processes underlying SMR are temporally partitioned
Helena Norman +4 more
wiley +1 more source
, 2007 Astyanax janeiroensis: rio Ribeira de Iguape basin: MHNCI 5921, 28 (2 c&s), ribeirào Pocinha, 8 Nov 1988; MZUSP 60163, 6, córrego do Franco, 24°47’S 48°33’W, 22 Mar 2000; MZUSP 71873, 2, rio Caçador, approx. 24°35’S 49°19’W, 6 Jan 2000; MZUSP 79510, 5, stream tributary of rio Três Barras, approx. 25°18’S 49°34’W, 16 May 2002.
Vinícius Abilhoa, Luiz Fernando Duboc
openaire +2 more sources
Retention of the Full Visual Opsin Repertoire in Some Australian Cryptozoic Lizards
Ecology and Evolution, Volume 16, Issue 6, June 2026.This study investigates the link between visual evolution and fossorial habits in the endemic Australian skink genus Lerista. We provide evidence for positive site‐specific selection in all 4 cone opsins, as well as relaxed selection specific to LWS. We also provide evidence of selection linked to limb reduction, an indicator of fossorial adaptation ...
Matthew J. R. Ford +5 more
wiley +1 more source
Neotropical IchthyologyTetragonopoterus aeneus Hensel (1870) is removed from synonymy with Astyanax fasciatus (Cuvier, 1819), revalidated and redescribed as A. henseli to avoid homonymy. Astyanax henseli differs from A. fasciatus stricto sensu and other Astyanax species by the
Filipe A. G. de Melo, Paulo A. Buckup
doaj +1 more source
Brazilian Archives of Biology and Technology, 1999 For a dietary study, specimens of Astyanax bimaculatus, Astyanax schubarti, and Moenkhausia intermedia were caught monthly with seines-nets in six lakes (Pau Veio, Porto Rico, Três Amigos, Mutum, Pontal, and Canal do Meio), on the floodplain of the Upper
Karla Danielle Gaspar da Luz +1 more
doaj +1 more source
Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 345, Issue 5, Page 486-497, June 2026.ABSTRACT Across the animal kingdom, social behaviors such as aggression are critical for survival and reproductive success. While there is significant variation in social behaviors within and between species, the genetic mechanisms underlying natural variation in social behaviors are poorly understood.
Renee Mapa +5 more
wiley +1 more source
Genetics and Molecular Biology, 2008 Chromosomal analyses were performed in the fish Astyanax sp.D collected from three different points: two streams from the right bank and one from the left bank of the Upper Iguaçu River, Paraná State, Brazil.
Daniel Luis Zanella Kantek +5 more
doaj +1 more source
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 5, May 2026.ABSTRACT Freshwater fish are essential components of aquatic ecosystems, providing key ecological functions and supporting livelihoods. Climate change poses a significant threat to freshwater biodiversity; consequently, both its conservation and the food security it sustains may be at risk.
Rafael Sebastián Muratalla‐Miranda +3 more
wiley +1 more source