Onychophora
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Redescription of Epiperipatus edwardsii, and descriptions of five new species of Epiperipatus from Brazil (Onychophora: Peripatidae)
ABSTRACT Epiperipatus edwardsii (Blanchard, 1847) is redescribed based on fresh material collected near the type locality. Additionally, five new species of velvet worms of the genus Epiperipatus Clark, 1913 from Brazil are described: Epiperipatus hyperbolicus sp. nov., Epiperipatus lucerna sp. nov., Epiperipatus titanicus sp. nov. (Holotypes deposited in MN
Zoologia (Curitiba). Publicado em: 14/11/2018
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2. A relação entre a humidade, luz e o padrão de atividade de um peripato, Epiperipatus sp. (Onychophora: Peripatidae), de Bahia Drake, Pacífico Sul da Costa Rica
Resumo Onychophora constituem um filo de animais. Não obstante, as observações do comportamento sazonal das espécies de “peripatos” na natureza são praticamente inexistentes. Com base em quatro anos de observações em campo, nós demostramos a relação entre umidade e luz, e padrão de atividade diária de uma nova espécie no gênero Epiperipatus
Braz. J. Biol.. Publicado em: 08/01/2018
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3. Molecular analyses reveal the occurrence of three new sympatric lineages of velvet worms (Onychophora: Peripatidae) in the eastern Amazon basin
Abstract In the present study, we investigated the possible existence of new lineages of peripatids through comparisons between known Neotropical species and specimens obtained from two locations in Pará, a state in eastern Brazilian Amazonia using a molecular approach based on sequences of the mtDNA genes COI, 16Sr RNA, and 18S RNA. The analyses included a
Genet. Mol. Biol.. Publicado em: 02/03/2017
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4. Cuatro nuevas especies del grupo Drosophila onychophora (Diptera, Drosophilidae) en el Parque Arqueológico Rumipamba, Pichincha, Ecuador
The species of the subgenera Phloridosa and Drosophila (in this last one, regarding the Drosophila species groups: D. flavopilosa, D. onychophora and D. bromeliae) are species of Drosophila that developed only in flowers. The group D. onychophora was proposed to bring together exclusively antophilic species. The former group is composed by 18 species, and is
Iheringia. Série Zoologia. Publicado em: 2012-06
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5. Grupo Drosophila asiri (Diptera, Drosophilidae), un nuevo grupo de especies andinas con la descripción de dos nuevas especies y la redescripción de Drosophila asiri
The Drosophila asiri group is a new group of species in the subgenus Drosophila. The specimens were captured in the highlands of Ecuador from 3200 m to 4000 m above sea level. This group includes Drosophila (D.) asiri Vela & Rafael, 2005, that was previously described within the D. onychophora species group, and two new species, Drosophila (D.) yuragyacum sp
Iheringia. Série Zoologia. Publicado em: 2012-03
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6. Relações filogenéticas do grupo panarthropoda avaliadas através de sequências do gene rDNA 18s
O grupo Ecdysozoa é composto por invertebrados que fazem troca de cutícula ou ecdise. Esse grupo foi proposto por Aguinaldo et al, 1997 em sua análise molecular com subunidade ribossomal 18S e contrasta com a hipótese morfológica do grupo Articulata. Dentro do Ecdysozoa, há um grupo de animais com características em comum denominado Panarthropoda. Est
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/06/2011
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7. Dos nuevas especies del grupo Drosophila onychophora (Diptera, Drosophilidae) en los bosques de Polylepis de Papallacta, Pichincha, Ecuador
Despite being a relatively small country, Ecuador has a variety of ecosystems that has favored high speciation levels. One of these ecosystems is the high-altitude Polylepis forests. In these forests, there is great plant diversity including Asteraceae, which host a plethora of insects in their flowers, among which one can find species from the Drosophila on
Iheringia. Série Zoologia. Publicado em: 2011-12
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8. Brazilian species of Onychophora with notes on their taxonomy and distribution
A revision of the currently known distribution of Onychophora (velvet worms) in Brazil is presented. Twenty-four morphospecies (half of them undescribed) belonging to four genera of the Peripatidae (Peripatus Guilding, 1826, Epiperipatus Clark, 1913, Macroperipatus Clark, 1913 and Oroperipatus Cockerell, 1908) are recorded. This high number of "unidentified"
Zoologia (Curitiba). Publicado em: 04/09/2009
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9. Onychophora in humid forests of northeastern Brazil
Brazilian Journal of Biology. Publicado em: 2006-02
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10. A hemocyanin from the Onychophora and the emergence of respiratory proteins
The velvet worms (Onychophora) are considered living fossils and are closely related to the Euarthropoda. Onychophora possess a tracheal system for respiratory function, but oxygen-transport proteins have been considered unnecessary. Here, we show that the hemolymph of the Epiperipatus sp. (Onychophora: Peripatidae) contains an arthropod-type hemocyanin, dem
National Academy of Sciences.
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11. Caterpillars did not evolve from onychophorans by hybridogenesis
The evolution and loss of distinctive larval forms in animal life cycles have produced complex patterns of similarity and difference among life-history stages and major animal lineages. One example of this similarity is the morphological forms of Onychophora (velvet worms) and the caterpillar-like larvae of some insects. Williamson [(2009) Proc Natl Acad Sci
National Academy of Sciences.
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12. Caterpillars evolved from onychophorans by hybridogenesis
I reject the Darwinian assumption that larvae and their adults evolved from a single common ancestor. Rather I posit that, in animals that metamorphose, the basic types of larvae originated as adults of different lineages, i.e., larvae were transferred when, through hybridization, their genomes were acquired by distantly related animals. “Caterpillars,”
National Academy of Sciences.