Results 61 to 70 of about 41,039 (215)
Journal of Fish Biology, EarlyView.Abstract A new species of Characidium is described from a small, isolated river in the highland areas of Noel Kempff Mercado National Park, Bolivia. The new taxon can be diagnosed by the presence of a relatively broad and conspicuous dark midlateral stripe extending from the tip of snout to the base of the caudal fin, markedly darker than the vertical ...
Leonardo Oliveira‐Silva +3 more
wiley +1 more source
On the Origin of Species: The Madeira River as a Barrier for Small Mammals in the Amazon [PDF]
, 2012 Barriers to dispersal (and hence gene flow between populations) represent an important causal factor promoting speciation. The Amazon River and its major tributaries have been the focus of numerous biogeographical studies because of their potential role ...
Everson, Kathryn
core
Palaeobiology of Pliocene-Pleistocene shallow-water biocalcarenites (Northern Apennines, Italy) and their relationship with coeval sapropels [PDF]
, 2020 © The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Cau, S., Roveri, M., & Taviani, M.
Cau, Simone +2 more
core +1 more source
Mercury in muscle and brain of catfish from the Madeira river, Amazon, Brazil
Ecotoxicology and Environmental Safety, 2015 The central nervous system is a critical target for Hg toxicity in all living organisms. Total Hg (THg) was determined in brain and muscle samples of 165 specimens of eight species of catfish (Brachyplatystoma filamentosum; Brachyplatystoma platynemum; Brachyplatystoma rousseauxii; Brachyplatystoma vaillantii; Phractocephalus hemiliopterus ...
Wanderley R, Bastos +7 more
openaire +2 more sources
On the snake Siphlophis worontzowi (Prado, 1940): notes on its distribution, diet and morphological data [PDF]
Check List, 2015 We provide geographic data for the poorly known dipsadid Siphlophis worontzowi including the first records to the Tocantins state and on the left bank of Madeira River at Rondônia State. Our data also extend its distribution on Mato Grosso State. We also
Francisco Dal Vechio +3 more
doaj +3 more sources
Acta Zoológica Lilloana, 2021 Bats are the second most diverse taxa of mammals in the world, after rodents. Some studies have evaluated if there is a relationship between the environment and the morphology of bats, because environmental conditions can have an important influence on ...
Adrián Alonso Durán
doaj +1 more source
Fish, Marmelos Conservation Area (BX044), Madeira River basin, states of Amazonas and Rondônia, Brazil [PDF]
Check List, 2007 The present study provides a species list of fish from the Marmelos River Area – BX044 in the states of Amazonas and Rondônia in northern Brazil. During a Rapid Ecological Assessment (REA) performed in October and November of 2003, 133 fish species from six orders and 24 families were recorded.
Mauricio Camargo, Tommaso Giarrizzo
openaire +3 more sources
New Mitogenomic Resources for the Caiman yacare (Daudin, 1802) From Bolivia
Ecology and Evolution, Volume 16, Issue 4, April 2026.New mitochondrial genomes were generated to enhance the mitochondrial genetic resources available for Caiman yacare. Mitochondrial genomes of approximately 16 kb were obtained through genome skimming using Illumina sequencing technology. The assemblies revealed a composition typical of vertebrate mitogenomes, including 13 protein‐coding genes, 2 rRNA ...
Guido Miranda +2 more
wiley +1 more source
Microlobiusxylon paranaensis gen. et sp. nov. (fabaceae, mimosoideae) from the pliocene-pleistocene of ituzaingó formation, paraná basin, Argentina [PDF]
, 2010 A fossil wood with Fabaceae affinity from the Pliocene-Pleistocene sediments of Ituzaingó Formation is described. The silicified wood was collected at the Toma Vieja fossil locality, Paraná Basin, Argentina.
Brea, Mariana, Franco, María Jimena
core +1 more source
TAXON, Volume 75, Issue 2, April 2026.Abstract The tempo and mode of assembly of the world's most diverse, tropical floras remain poorly known. Evolutionary relationships within pantropical plant clades such as Connaraceae (Oxalidales, ca. 220 species) offer an opportunity to address this issue.
Serafin J.R. Streiff, Jurriaan M. de Vos
wiley +1 more source