Results 61 to 70 of about 143,466 (209)

Two new species of Ageniella Banks, 1912 (Hymenoptera: Pompilidae) from Brazil and updated keys

open access: yesEuropean Journal of Taxonomy, 2022
Ageniella Banks, 1912 is a paraphyletic group exclusive to the Nearctic and Neotropical regions. The genus has a remarkable morphological diversity among species and strong sexual dimorphism, hampering taxonomic studies of it.
Márcia Rapoza, Cecilia Waichert
doaj   +1 more source

A case of intersex occurrence in Steindachneridion parahybae (Steindachner, 1877) (Siluriformes: Pimelodidae) under captivity condition: A cytogenetic and morphological study [PDF]

open access: yes, 2016
Poco se sabe sobre la biología reproductiva de Steindachneridion parahybae , una especie de teleósteo gonocorístico en peligro de extinción que habita la cuenca del río Paraíba do Sul y en éste trabajo se describe por primera vez la aparición de ...
Caneppele, Danilo   +4 more
core   +2 more sources

Biogeographic and diversification patterns of Neotropical Troidini butterflies (Papilionidae) support a museum model of diversity dynamics for Amazonia

open access: yesBMC Evolutionary Biology, 2012
Background The temporal and geographical diversification of Neotropical insects remains poorly understood because of the complex changes in geological and climatic conditions that occurred during the Cenozoic.
Condamine Fabien L   +3 more
doaj   +1 more source

Changes in Species Richness and Composition of Tiger Moths (Lepidoptera: Erebidae: Arctiinae) among Three Neotropical Ecoregions [PDF]

open access: yes, 2016
Paraná, Yungas and Chaco Serrano ecoregions are among the most species-richterrestrial habitats at higher latitude. However, the information for tiger moths, one of the most speciose group of moths, is unknown in these ecoregion. In this study, we assess
Beccacece, Hernán Mario   +2 more
core   +3 more sources

Comparative Gut Microbiota of 59 Neotropical Bird Species [PDF]

open access: yesFrontiers in Microbiology, 2015
The gut microbiota of vertebrates are essential to host health. Most non-model vertebrates, however, lack even a basic description of natural gut microbiota biodiversity. Here, we sampled 116 intestines from 59 Neotropical bird species and used the V6 region of the 16S rRNA molecule as a microbial fingerprint (average coverage per bird ~80,000 reads ...
Sarah M Hird   +7 more
openaire   +3 more sources

Nuevos registros del género Fomitiporia (Hymenochaetales, Basidiomycota) en México New records of the genus Fomitiporia (Hymenochaetales, Basidiomycota) in Mexico

open access: yesRevista Mexicana de Biodiversidad, 2012
Se describen e ilustran por primera vez para México 6 especies del género Fomitiporia: F. apiahyna, F. calkinsii, F. dryophila, F. langloisii, F. maxonii y F. texana, y se amplía la distribución de F. sonorae para el estado de Querétaro.
Tania Raymundo   +5 more
doaj  

DNA barcode detects high genetic structure within neotropical bird species. [PDF]

open access: yesPLoS ONE, 2011
BACKGROUND: Towards lower latitudes the number of recognized species is not only higher, but also phylogeographic subdivision within species is more pronounced.
Erika Sendra Tavares   +3 more
doaj   +1 more source

Neotropical Seasonally Dry Forests: Response of Soil Fungal Communities to Anthropogenic Actions [PDF]

open access: yes, 2018
The aim of this review was to analyze the information available on soil fungal community of Neotropical Seasonally dry forests, with special attention given to the Chaco area.
Merlos, Cristina Soledad   +2 more
core   +2 more sources

Acute toxicity of sodium metabisulphite on mangrove crab Ucides cordatus (Decapoda, Ucididae)

open access: yesAnais da Academia Brasileira de Ciências, 2012
The sodium metabisulphite salt is usually used in shrimp culture to prevent black spot. Unfortunately the toxicological effect of this xenobiotic in decapod crabs is unknown. Thus, the present study aims to investigate the sodium metabisulphite LC50 - 96
Adriana B. Pedale   +3 more
doaj  

On the Neotropical species of the spider genus Tekellina Levi, 1957 (Arachnida: Araneae: Synotaxidae)

open access: yesEuropean Journal of Taxonomy
The genus Tekellina Levi, 1957 is currently composed of ten species, six of which are Neotropical. They are small-sized spiders (0.9 to 1.5 mm), with a wide distribution, with a great diversity in the Neotropical Region and well represented in Brazil ...
Narelle Estol   +3 more
doaj   +1 more source

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