Results 21 to 30 of about 82,285 (316)

BIRD COMMUNITIES ALONG URBANIZATION GRADIENTS: A COMPARATIVE ANALYSIS AMONG THREE NEOTROPICAL CITIES [PDF]

open access: yes, 2017
∙ Urbanization is expanding continuously over rural and natural areas and it is imperative to analyze its effect on bird communities. Although the impact of urbanization on bird communities in the Neotropical region has been explored by several authors ...
Villegas, Mariana   +4 more
core   +1 more source

Viuria Grishin, 2019 (Lepidoptera: Hesperiidae): taxonomy, description of two new species, and remarks on the morphology of secondary sexual organs of males

open access: yesEuropean Journal of Taxonomy, 2023
The taxonomy of the Neotropical Carcharodini genus Viuria Grishin, 2019 (Lepidoptera: Hesperiidae: Pyrginae) is presented. Two new species are described: Viuria inanna sp. nov.
Ricardo Russo Siewert   +3 more
doaj   +1 more source

Stone tools differences across three capuchin monkey populations: food’s physical properties, ecology, and culture

open access: yesScientific Reports, 2022
Robust capuchin monkeys (Sapajus) are known for processing mechanically challenging foods, having morphological adaptations to do so. However, several populations go beyond body limitations by using stone tools to expand their food range.
Tiago Falótico   +3 more
doaj   +1 more source

Exceptionally preserved ‘skin’ in an Early Cretaceous fish from Colombia [PDF]

open access: yesPeerJ, 2020
Studies of soft tissue, cells and original biomolecular constituents preserved in fossil vertebrates have increased greatly in recent years. Here we report preservation of ‘skin’ with chemical and molecular characterization from a three-dimensionally ...
Andrés Alfonso-Rojas   +1 more
doaj   +2 more sources

Distribution survey, ecological niche modelling and conservation assessment of the Peruvian Night Monkey: Aotus Miconax Thomas, 1927 (Mammalia: Primates: Aotidae) in north-eastern Peru, with notes on the distributions of Aotus spp. Gray, 1870

open access: yesJournal of Threatened Taxa, 2015
Aotus miconax is endemic to Peru and remains one of the least studied of all Neotropical primate taxa.  It has an altitudinally restricted distribution and is limited to areas of premontane and montane cloud forest in the countries north.
Sam Shanee   +3 more
doaj   +3 more sources

First record of Sebekia oxycephala (Pentastomida: Sebekidae) infecting Helicops angulatus (Reptilia: Colubridae) in Northeast Brazil [PDF]

open access: yesBrazilian Journal of Biology, 2023
In this study, we investigated the infection by pulmonary parasites in the water snake Helicops angulatus. We found four nymphs of the pentastomide parasite Sebekia oxycephala, parasitizing two adult females H.
M. C. Oliveira   +5 more
doaj   +1 more source

USING MORPHOMETRICS TO DETERMINE SEX IN A NEOTROPICAL PASSERINE: THE GRAY‐BREASTED WOOD‐WREN (HENICORHINA LEUCOPHRYS) [PDF]

open access: yes, 2017
∙ Sexual size dimorphism is a widespread pattern among birds, but has remained untested for many Neotropical species. Here we examine sexual differences in a relatively common passerine that is found from Mexico to Bolivia, the Gray‐breasted Wood‐Wren ...
Pérez-Emán, Jorge L   +1 more
core   +1 more source

FIRST DESCRIPTION OF THE NEST AND EGGS OF THE PERUVIAN PIPIT (ANTHUS PERUVIANUS, AVES: MOTACILLIDAE) [PDF]

open access: yes, 2020
We described the nest of the recently recognized Peruvian Pipit (Anthus peruvianus) in Islay Province, department of Arequipa, southern Peru, and compared it to the known nests of other Neotropical pipits.
Arcco Mamani, Andy Rodrigo   +3 more
core   +1 more source

Macroinvertebrados bentónicos de ríos de zonas áridas del noroeste argentino

open access: yesEcología Austral, 2018
Una gran parte del noroeste argentino (NOA) está ocupada por zonas áridas vulnerables al avance de las actividades humanas. En este trabajo se caracterizaron los ensambles de macroinvertebrados de los ríos de esas zonas, para lo cual se emplearon ...
Guillermo E. Hankel   +2 more
doaj   +1 more source

Nocturnal multi-species roosts of Cicindelidae (Coleoptera) in a Neotropical lowland rainforest

open access: yes, 2021
lowland, Neotropical, Kirmse, Susan, Wiesner, Jürgen (2021): Nocturnal multi-species roosts of Cicindelidae (Coleoptera) in a Neotropical lowland rainforest.
Kirmse, Susan   +2 more
core   +1 more source

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