Species Boundaries
Mostrando 1-12 de 137 artigos, teses e dissertações.
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1. Species boundary and extensive hybridization and introgression in Petunia
ABSTRACT Studying the role of hybridization in the speciation of plants is one of the most thrilling areas of evolutionary biology. Hybridization in natural populations can act in opposition to divergence, contribute to adaptation through introgression or foster the emergence of new lineages via hybrid speciation. Species of the plant genus Petunia grow in o
Acta Bot. Bras.. Publicado em: 07/10/2019
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2. Molecular identification of three species of Oncideres (Coleoptera: Cerambycidae) using RAPD markers
Abstract: Twig girdlers have a short adult life and a long larval stage (up to one year in some species). This fact, together with lack of morphological traits to identify the species from the larval stage, poses obstacles for the taxonomic identification and characterization of the many twig girdlers found in the wild. To solve this matter, Random Amplified
An. Acad. Bras. Ciênc.. Publicado em: 02/09/2019
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3. Foliar anatomy of Rhynchosia spp. (Leguminosae, Papilionoideae) from Roraima state, northern Brazilian Amazon
RESUMO Estudos comparativos da estrutura anatômica foliar foram realizados para identificar caracteres morfológicos adicionais para a caracterização sistemática de quatro espécies de Rhynchosia ocorrentes em Roraima. Folhas completamente expandidas, incluindo o pecíolo, foram coletadas nos nós superiores da planta. Os caracteres anatômicos foram est
Acta Amaz.. Publicado em: 2019-03
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4. Despindo a narrativa: uma poética felina (apontamentos acerca da alteridade)
Resumo A partir dos estudos culturais, a interdisciplinaridade das ciências trouxe à tona temas como a questão do ser humano e/ou animal. Nesse espaço denominado animais studies se embrenharam pesquisadores como Jacques Derrida e J. M. Coetzee (escritos sobre o animal), Michael Foucault (loucura e animalidade), Deleuze e Guattari (a noção de devir anim
Estud. Lit. Bras. Contemp.. Publicado em: 21/02/2019
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5. Ichthyofauna of headwater streams from the rio Ribeira de Iguape basin, at the boundaries of the Ponta Grossa Arch, Paraná, Brazil
Resumo: A bacia do rio Ribeira de Iguape (Estado do Paraná) é altamente relevante para a preservação de remanescentes da Mata Atlântica. Os seus altos níveis de diversidade e de endemismo de peixes explicam a dinâmica fluvial promovida pelo Arco de Ponta Grossa, estrutura geológica que promove eventos de captura de cabeceira e de isolamento entre as
Biota Neotrop.. Publicado em: 21/01/2019
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6. Anticipating the response of the Brazilian giant earthworm (Rhinodrilus alatus) to climate change: implications for its traditional use
Abstract Our understanding of the impacts of ongoing global warming on terrestrial species has increased significantly during the last several years, but how climatic change has affected, and will affect, the distribution of earthworms remains largely unknown. We used climate niche modeling to model the current distribution of the giant earthworm Rhinodrilus
An. Acad. Bras. Ciênc.. Publicado em: 17/12/2018
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7. A new species of Lelegeis (Coleoptera: Tenebrionidae: Diaperini) from the Atlantic Forest of Brazil
ABSTRACT Lelegeis Champion, 1886 occurs only in the Neotropical region and comprises four species: L. aeneipennis Champion, 1886 from Mexico; L. apicalis Laporte & Brullé, 1831 from Cuba; L. hispaniolae Triplehorn, 1962 from Haiti and the Dominican Republic; and L. nigrifrons (Chevrolat, 1878) occurring in Brazil, Mexico, Panama, Peru and Venezuela. Here, L
Zoologia (Curitiba). Publicado em: 23/10/2017
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8. Reproduction, feeding and migration patterns of Prochilodus nigricans (Characiformes: Prochilodontidae) in northeastern Ecuador
ABSTRACT The black prochilodus, Prochilodus nigricans, is an important food fish distributed throughout aquatic habitats of the Ecuadorian Amazon. We sampled gonad weight, body condition, and feeding of this species to address the question of whether changes in these biological parameters are related to hydrological variation and migration patterns. High fre
Neotrop. ichthyol.. Publicado em: 05/10/2017
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9. The taxonomic significance of seed morphology in the Passiflora subgenus Astrophea (Passifloraceae)
ABSTRACT The center of diversity for Passiflora subg. Astrophea is in low altitude areas of northern South America. The majority of species of this group are difficult to find in nature. Seed morphology was described in detail for 25 species of Passiflora subgenus Astrophea, a subgenus that until now did not exist. For morphological analysis, 20 seeds per sp
Acta Bot. Bras.. Publicado em: 13/03/2017
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10. Eficiencia de las unidades de conservación definidas en la Reserva Natural Iberá (Argentina) en la protección de la diversidad de reptiles
ABSTRACT Owing to accelerated biodiversity loss caused by human activities, the protected areas (PAs) are the main response to mitigate this crisis. The Iberá Natural Reserve (INR) includes 13000 km2 of private and state lands, which contain wetland and upland areas with high biodiversity, endemism and significant populations of threatened species. In order
Iheringia, Sér. Zool.. Publicado em: 13/02/2017
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11. Small mammal distributional patterns in Northwestern Argentina
ABSTRACT Quantitative evaluations of species distributional congruence allow evaluating previously proposed biogeographic regionalization and even identify undetected areas of endemism. The geographic scenery of Northwestern Argentina offers ideal conditions for the study of distributional patterns of species since the boundaries of a diverse group of biomes
Iheringia, Sér. Zool.. Publicado em: 2015-12
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12. More on the Mesopotamian-Yungas disjunction in subtropical and temperate Argentina: Bioclimatic distribution models of the harvestman Discocyrtus dilatatus (Opiliones: Gonyleptidae)
ABSTRACT In this paper, the potential distribution of the Mesopotamian harvestman Discocyrtus dilatatus Sørensen, 1884 is modeled, and the species' bioclimatic profile is described. Models were built with the presence-only methods Maxent and Bioclim, using 85 unique records (of which 49 are new) and 11 non-correlated bioclimatic variables as predictors. Bot
Zoologia (Curitiba). Publicado em: 2015-12