Results 101 to 110 of about 39,651 (306)

A new species of Gymnotus (Gymnotiformes: Gymnotidae) from the Fitzcarrald Arch of southeastern Peru

Neotropical Ichthyology
Herein Gymnotus chaviro is described from the Alto Yuruá (upper rio Juruá) of southeastern Peru, where it is locally abundant in terra firme streams and floodplain oxbow lakes, and occurs sympatrically and syntopically with the type species of the genus ...
Emmanuel L. Maxime, James S. Albert
doaj   +1 more source

High‐Altitude Adaptation of Frogs (Case Study: Nanorana parkeri): From Physiological Phenotypes to AltitudeOmics

Integrative Zoology, EarlyView.
High altitudes are challenging for the animals that inhabit these environments. The Xizang plateau frog (Nanorana parkeri) survives in high‐altitude environments through a synergistic strategy of metabolic remodeling and protein expression adjustment to optimize energy efficiency and enhance cellular protection.
Xuejing Zhang, Yonggang Niu, Shengkang Men, Yanghuilin Zhang, Xiaolong Tang, Kenneth B. Storey, Qiang Chen   +6 more
wiley   +1 more source

Space-time dynamics in monitoring neotropical fish communities using eDNA metabarcoding [PDF]

, 2020
Naiara Guimarães Sales, Owen S. Wangensteen, Daniel C. Carvalho, Kristy Deiner, Kim Præbel, Ilaria Coscia, Allan D. McDevitt, Stefano Mariani   +7 more
openalex   +1 more source

Molecular and fossil evidence place the origin of cichlid fishes long after Gondwanan rifting. [PDF]

, 2013
Cichlid fishes are a key model system in the study of adaptive radiation, speciation and evolutionary developmental biology. More than 1600 cichlid species inhabit freshwater and marginal marine environments across several southern landmasses.
Alex Dornburg, Benjamin P. Keck, C. Darrin Hulsey, Christopher H. Martin, Matt Friedman, Matt Friedman, Peter C. Wainwright, Ron I. Eytan, Thomas J. Near, Thomas J. Near   +9 more
core   +1 more source

Availability of a Keystone Plant Resource Reduces Niche Overlap and Drives Distinct Species‐Specific Changes in Niche Breadth Among Small Rodents

Integrative Zoology, EarlyView.
We investigated how three rodent species respond to the seasonal availability of Araucaria angustifolia seeds. While Oligoryzomys spp. increased seed consumption and abundance during seed production, the more insectivorous Akodon paranaensis maintained a broader diet.
Adriana A. Perini, Emerson M. Vieira
wiley   +1 more source

Water temperature, body mass and fasting heat production of pacu (Piaractus mesopotamicus)

Anais da Academia Brasileira de Ciências
Knowledge on fasting heat production (HEf) of fish is key to develop bioenergetics models thus improving feeding management of farmed species. The core of knowledge on HEf of farmed, neotropical fish is scarce. This study assessed the effect of body mass
FREDY A.A. AGUILAR, THALINE M.P. DA CRUZ, GERSON B. MOURÃO, JOSÉ EURICO P. CYRINO   +3 more
doaj   +1 more source

The complete mitochondrial genome sequences of five Otophysi species (Vertebrata, Teleostei)

Mitochondrial DNA. Part B. Resources, 2019
Complete mitochondrial genomes of the characiform fishes Astyanax fasciatus, Astyanax altiparanae, Hoplias malabaricus (Karyomorph A) and the Gymnotiformes species Gymnotus sylvius and Gymnotus cuia were characterized in the present study.
Rodrigo Milan Calegari, Pedro Henrique Mira Rodrigues, Rodrigo Zeni dos Santos, Fausto Foresti, Ricardo Utsunomia, Fábio Porto-Foresti   +5 more
doaj   +1 more source

Nuclear DNA content of thirty species of Neotropical fishes

Genetics and Molecular Biology, 1998
The present paper reports nuclear DNA content in 30 Neotropical freshwater fish species and summarizes the data on other Neotropical species presented in the literature. Among Neotropical fishes, the nuclear DNA content ranges from 1.04 ± 0.09 pg/nucleus in Corydoras cf. simulatus (2n = 62) to 248.0 pg/nucleus in Lepidosiren paradoxa (2n = 38).
Carvalho, Margarida Lima, Oliveira, Claudio, Foresti, Fausto   +2 more
openaire   +6 more sources

Evaluating the empirical basis for threat attribution in the IUCN Red List

Conservation Biology, EarlyView.
Abstract Understanding the impacts of different threats on species is key to successful conservation interventions and policies. The International Union for Conservation of Nature (IUCN) assesses threats to species, and the organization's Red List of Threatened Species is a key conservation tool.
Ena Humphries, Isaac M. Smith, Mark Ziebell, Charlotte M. Probst, Neil Carter, Brian C. Weeks   +5 more
wiley   +1 more source

Leptodactylus knudseni [PDF]

, 2006
Number of Pages: 12Integrative BiologyGeological ...
Heyer, Miriam Muedeking, Heyer, W. Ronald   +1 more
core   +1 more source