Results 31 to 40 of about 14,792 (222)

Long-term persistence of supernumerary B chromosomes in multiple species of Astyanax fish

BMC Biology, 2021
Background Eukaryote genomes frequently harbor supernumerary B chromosomes in addition to the “standard” A chromosome set. B chromosomes are thought to arise as byproducts of genome rearrangements and have mostly been considered intraspecific oddities ...
D. M. Silva, Francisco J. Ruiz-Ruano, Ricardo Utsunomia, María Martín-Peciña, J. P. Castro, P. Freire, R. Carvalho, D. Hashimoto, Alexander Suh, Cláudio Oliveira, F. Porto‐Foresti, R. Artoni, F. Foresti, J. Camacho   +13 more
semanticscholar   +1 more source

Maternal control of visceral asymmetry evolution in Astyanax cavefish

Scientific Reports, 2021
The direction of visceral organ asymmetry is highly conserved during vertebrate evolution with heart development biased to the left and pancreas and liver development restricted to opposing sides of the midline.
Li Ma, Mandy Ng, Janet Shi, Aniket V. Gore, Daniel Castranova, B. Weinstein, W. Jeffery   +6 more
semanticscholar   +1 more source

Unraveling stress resilience: Insights from adaptations to extreme environments by Astyanax mexicanus cavefish.

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution
Extreme environmental conditions have profound impacts on shaping the evolutionary trajectory of organisms. Exposure to these conditions elicits stress responses, that can trigger phenotypic changes in novel directions.
Ansa E. Cobham, Nicolas Rohner
semanticscholar   +1 more source

Population biology of Astyanax lacustris (Pisces, Characiformes) in a Neotropical reservoir and its tributaries.

Anais da Academia Brasileira de Ciências, 2021
The aging process of reservoirs has been extensively investigated; however, little is known about how fish populations are adjusted after many years of impoundment.
A. P. Vidotto‐Magnoni, Gregório Kurchevski, F. P. de Lima, A. Nobile, D. Garcia, A. C. R. Casimiro, A. Pereira, M. Orsi   +7 more
semanticscholar   +1 more source

Genome Expansion of ZPB1(a) and ZPC1(a) in Basal Species or Liver Expression of ZPB1a and ZPC1aa in Advanced Species, Two Different Strategies to Ensure Sufficient ZP Synthesis in Teleosts

Integrative Zoology, EarlyView.
We found that teleosts employed two different strategies to ensure sufficient ZP (zona pellucida) synthesis: expansion of ZPB1(a) and ZPC1(a) in basal species or liver expression of ZPB1a and ZPC1aa in advanced species. The N‐terminus of expanded ZPB1(a) or ZPC1(a) and liver‐expressed ZPB1a contains repeated units or low‐complexity regions to form ...
Tian Gao, Suying Ma, Shiyi Zhang, Fan Bai, Lingyao Gan, Wenjing Tao, Feilong Wang, Deshou Wang, Lina Sun   +8 more
wiley   +1 more source

Genetic Mapping of Orofacial Traits Reveals a Single Genomic Region Associated With Differences in Multiple Parameters of Jaw Size Between Astyanax mexicanus Surface and Cavefish

Evolution &Development, EarlyView.
By performing a genetic association study in cave × surface fish F2 hybrids, we discovered that premaxilla width, dentary length, and maxillary length are all significantly associated with a region on Chromosome 13 containing 109 genes. ABSTRACT The regulation of bone size is a poorly understood and complex developmental process.
Amanda K. Powers, Alleigh Amaismeier, Kathryn Thiel, William Anyonge, Suzanne E. McGaugh, Tyler E. Boggs, Clifford J. Tabin, Joshua B. Gross   +7 more
wiley   +1 more source

Linking rivers, mixing faunas: How artificial connectivity between the Middle and Upper Paraná River basins shapes fish diversity in a tributary of the Itaipu Reservoir, Brazil

Journal of Fish Biology, EarlyView.
Abstract This work aimed to investigate the distribution and occurrence of fish species along the São Francisco Falso Braço Norte (SFFBN) River basin, a tributary of the Middle Paraná River basin now artificially connected to the Upper Paraná ecoregion, to evaluate how such connectivity may affect the biogeographic distribution and regional composition
Lucas E. P. Kampfert, João C. Maicrovicz, Daniel R. Blanco, Denise Lange, Carla S. Pavanelli, Heleno Brandão   +5 more
wiley   +1 more source

The piranha genome provides molecular insight associated to its unique feeding behavior [PDF]

, 2019
The piranha enjoys notoriety due to its infamous predatory behavior but much is still not understood about its evolutionary origins and the underlying molecular mechanisms for its unusual feeding biology.
Adolfi, Mateus, Fischer, Petra, Kneitz, Susanne, Meyer, Axel, Minx, Patrick, Schartl, Manfred, Schmidt, Cornelia, Tomlinson, Chad, Volkoff, Helene, Warren, Wesley C   +9 more
core   +2 more sources

Ossification of the cranium of Inpaichthys kerri (Characiformes: Acestrorhamphidae) with discussion of paedomorphic traits in the genus

Journal of Anatomy, EarlyView.
In this study, we present a detailed description of the cranial development of Inpaichthys kerri (Characiformes: Acestrorhamphidae), highlighting important topics such as pedomorphic characters and their relationship with ontogeny and phylogeny, as well as ossification sequences unique to the species. Abstract The study of development provides valuable
Yasmim De Santana Santos, Manoela M. F. Marinho   +1 more
wiley   +1 more source

Ocular Morphology and Clinical Ophthalmic Parameters of Nile Tilapia Oreochromis niloticus

Veterinary Ophthalmology, EarlyView.
ABSTRACT Objective To describe the ocular morphological characteristics and establish clinical and ophthalmic reference standards for Nile tilapia. Animals Studied Fresh carcasses were used for diaphanization, optical and electron microscopy, and computed tomography analyses.
Dandara Franco Ferreira da Silva, Lucélia Gonçalves Vieira, Pedro Vale de Azevedo Brito, Sonia Nair Báo, Ingrid Gracielle Martins da Silva, Rodrigo Diana Navarro, Clarissa Machado de Carvalho, Paula Diniz Galera, Daniel Henrique Viana da Silva, Weslley de Souza Barbosa, Rosélia de Lima Sousa Araújo, Giane Regina Paludo, Liria Queiroz Luz Hirano   +12 more
wiley   +1 more source