Congeneric Pairs
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. First zoeal stage of the crab Domecia acanthophora (Desbonne, in Desbonne & Schramm, 1867) (Decapoda, Brachyura) and revision of the larval morphology of superfamily Trapezioidea
ABSTRACT The morphology of the first zoeal stage of Domecia acanthophora (Desbonne, in Desbonne & Schramm, 1867) was described from laboratory-hatched material obtained from ovigerous females collected at Vitória Island on the southeastern Brazilian coast. We compared the larval morphology (zoea I) of fourteen species of the superfamily Trapezioidea, which
Nauplius. Publicado em: 21/11/2016
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2. The reproductive biology of Pinguipes brasilianus Cuvier, 1829 (Osteichthyes: Pinguipedidae) in temperate rocky reefs of Argentina
ABSTRACT Pinguipes brasilianus is a conspicuous and abundant rocky-reef fish inhabiting the Northern Patagonian gulfs of Argentina, Southwest Atlantic. This study describes its reproductive biology in this region. We made macroscopic and histological descriptions of the testis and ovary development, analyzed the evolution of the gonadosomatic index (GSI) in
Neotrop. ichthyol.. Publicado em: 2015-12
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3. Cytogenetics and sperm ultrastructure of Atelopus spumarius (Anura, Bufonidae) from the Brazilian Amazon
The current taxonomy of most Atelopus species is based on morphological and color data only. Recent studies suggest that A. spumarius may represent a species complex assigned under the same name. Karyotypic data and description of sperm ultrastructure for 13 specimens of A. spumarius are presented here for the first time. A chromosomal analysis revealed 2n =
Genet. Mol. Biol.. Publicado em: 03/09/2013
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4. Padrões anatômicos, fenológicos, fotossintéticos e de crescimento em espécies arbóreas do cerrado sensu stricto e de mata de galeria
No presente estudo foram avaliadas diversas características funcionais em espécies de mata de galeria e de cerrado crescendo em regiões de cerrado e de transição entre cerrado e mata de galeria. O objetivo do estudo foi o de verificar se o grupo de espécies de mata e de cerrado se diferenciavam nos padrões fenológicos, de crescimento em diâmetro, fo
Publicado em: 2008
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5. Rate variation of protein and mitochondrial DNA evolution as revealed by sea urchins separated by the isthmus of Panama.
Acceptance of the rough constancy of rates of molecular evolution, averaged over tens of millions of years, is widely used to date the splitting between taxa. However, for the study of speciation a hypothesis of rough constancy over tens of millions of years is of little use. In order to date the splitting of congeneric species within defined ranges of uncer
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6. Sympatric speciation through intraspecific social parasitism
Sympatric speciation through intraspecific social parasitism has been proposed for the evolution of Hymenopteran workerless parasites. Such inquilines exploit related host taxa to produce their own sexual offspring. The relatedness of inquilines to their hosts has been generalized in Emery's rule, suggesting that social parasites are close or the closest
National Academy of Sciences.
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7. Assembly of avian mixed-species flocks in Amazonia.
Diamond's "assembly rules" model posits that competitive interactions among species govern the composition of avifaunas. Although originally applied to islands in archipelagoes, this controversial set of hypotheses is difficult to test because islands differ in habitat and resource availability, colonization history, and stochastic effects. Permanent mixed-s
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8. Chloroplast DNA Variation in a Wild Plant, Tolmiea Menziesii
Few studies of cpDNA have provided evolutionary and/or phylogenetic information at the intraspecific level. We analyzed restriction site variation using 19 endonucleases in 37 populations representing both diploid (2n = 14) and autotetraploid (2n = 28) Tolmiea menziesii. Seven restriction site mutations and five length mutations were observed. Although diplo