Results 41 to 50 of about 14,792 (222)

Utilizing the blind cavefish Astyanax mexicanus to understand the genetic basis of behavioral evolution

open access: yesJournal of Experimental Biology, 2020
Colonization of novel habitats often results in the evolution of diverse behaviors. Comparisons between individuals from closely related populations that have evolved divergent behaviors in different environments can be used to investigate behavioral ...
Johanna E. Kowalko
semanticscholar   +1 more source

Bat Migration Intensifies Cave Fish Richness Loss Under Climate Change in China

open access: yesDiversity and Distributions, Volume 32, Issue 2, February 2026.
ABSTRACT Aim Cave fish, the largest aquatic vertebrates in karst ecosystems, rely heavily on bat guano as a nutrient source. However, ongoing environmental change is degrading cave habitats and altering bat distributions. This study aims to assess how climate‐driven bat migration affects cave fish distributions in China, providing insights for ...
Xiongfeng Bai   +6 more
wiley   +1 more source

The role of gene flow in rapid and repeated evolution of cave related traits in Mexican tetra, Astyanax mexicanus

open access: yesbioRxiv, 2018
Understanding the molecular basis of repeated evolved phenotypes can yield key insights into the evolutionary process. Quantifying the amount of gene flow between populations is especially important in interpreting mechanisms of repeated phenotypic ...
A. Herman   +18 more
semanticscholar   +1 more source

Discovery of Two New Astyanax Cavefish Localities Leads to Further Understanding of the Species Biogeography

open access: yesDiversity, 2020
The Astyanax species complex has two morphs: a blind, depigmented morph which inhabits caves in México and an eyed, pigmented surface-dwelling morph. The eyed morph can also be found in a few caves, sometimes hybridizing with the cave morph. This species
L. Espinasa   +7 more
semanticscholar   +1 more source

On some species of Astyanax reported erroneously from Argentina [PDF]

open access: yes, 2015
Several species of Astyanax have been reported from Argentina which currently are considered not to be distributed so far South or whose identity as Astyanax is doubtful.
Koerber, Stefan, Mirande, Juan Marcos
core  

Evaluation of a novel anti‐mycotoxin agent specific for aquatic species in mitigating aflatoxin B1‐induced changes in Nile tilapia: A comprehensive study

open access: yesJournal of the World Aquaculture Society, Volume 57, Issue 1, February 2026.
Abstract Aflatoxin B1 (AFB1) contamination of aquaculture feed poses serious health risks to fish and consumers. In this study, the efficacy of a novel anti‐mycotoxin agent specific for aquatic species (AM‐AQ) containing bentonite, sepiolite, and orange peel meal (Citrus Sinensis) in alleviating AFB1 toxicity in Nile tilapia (Oreochromis niloticus) was
Eman Zahran   +12 more
wiley   +1 more source

Ichthyological ecoregions of Argentina [PDF]

open access: yes, 2002
The Argentine Republic is situated in the southernmost portion of the American continent, occupying over 2,785,600 km2 not including the Antarctic territory. The country ranges from subtropical areas (21º46’S) to subantarctic regions (55º03’S), extending
López, Hugo Luis   +2 more
core  

Cryptic Variation in Morphological Evolution: HSP90 as a Capacitor for Loss of Eyes in Cavefish [PDF]

open access: yes, 2013
In the process of morphological evolution, the extent to which cryptic, preexisting variation provides a substrate for natural selection has been controversial. We provide evidence that heat shock protein 90 (HSP90) phenotypically masks standing eye-size
Borowsky, R. L.   +7 more
core   +1 more source

Ictiofauna epígea e subterrânea na área cárstica da Serra do Ramalho, nordeste brasileiro, com listas de peixes troglóbios e troglófilos no Brasil [PDF]

open access: yes, 2008
After an ichthyofaunistic survey in several epigean (surface) water bodies of the Serra do Ramalho, southern Bahia, conducted in May 2007, 44 species were recorded; in addition, three non-troglomorphic (normally eyed and pigmented) and two troglomorphic ...
BICHUETTE, Maria Elina   +3 more
core   +1 more source

Tails of Biodiversity: Vertebrate Community Assessment in a Neotropical River Basin via eDNA Metabarcoding

open access: yesEnvironmental DNA, Volume 8, Issue 1, January–February 2026.
This study used environmental DNA (eDNA) metabarcoding to assess vertebrate biodiversity in headwater streams of the Rio Santo Antônio basin, southeastern Brazil, a tributary of the Rio Doce. A total of 119 vertebrate OTUs were identified, with oxidation–reduction potential emerging as the strongest environmental predictor of species richness.
Larissa Moreira‐Silva   +8 more
wiley   +1 more source

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