RSS 1.0Artigos - Biologia - IBRC
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Method for maintaining adult solitary bee Centris analis under laboratory conditions
Tadei, Rafaela
; ; ; ; Malaspina, Osmar (Methods in Ecology and Evolution, 2022) [Artigo]
Although solitary bees represent at least 70% of bee species, most ecotoxicological studies on bees focus on social species and there are only a few species of solitary bees. One of the challenges in developing toxicological ... -
Enzymatic responses in the head and midgut of Africanized Apis mellifera contaminated with a sublethal concentration of thiamethoxam
Decio, Pâmela; Miotelo, Lucas ; Pereira, Franco Dani Campos ; Roat, Thaisa Cristina ; Marin-Morales, Maria Aparecida ; Malaspina, Osmar (Ecotoxicology and Environmental Safety, 2021) [Artigo]
The increasing use of insecticides, promoted by the intensification of agriculture, has raised concerns about their influence on the decline of bee colonies, which play a fundamental role in pollination. Thus, it is ... -
The Arboranan frogs: Evolution, biology, and cytogenetics
; ; ; ; ; ; Gruber, Simone L.; Kasahara, Sanae ; ; et al. (Cytogenetic and Genome Research, 2018) [Resenha]
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Morphology like a tool to understand the social behavior in ant’s larvae
Ortiz, Gabriela; Mathias, Maria Izabel Camargo ; Bueno, Odair Correa (Larvae: Morphology, Biology and Life Cycle, 2012) [Capítulo de livro]
All metamorphosing insects pass through four consecutive stages before reaching their adult form and these stages are known as the egg, the larva, the semipupa and the pupa. The larval stage comprising individuals who have ... -
Comparative study of the ovarian morphology in the order Polydesmida (Diplopoda) and description of unusual structures in the female reproductive system
Pinheiro, T. G.; ; Fontanetti, C. S. (Brazilian Journal of Biology, 2013) [Artigo]
Polydesmida is the largest order in the class Diplopoda in terms of the number of species, genera and families, but there are few studies of the ovarian morphology of species in this order. This study aimed to perform a ... -
Isolation and sequence analysis of peptides from the venom of Protonectarina sylveirae (hymenoptera‐vespidae)
; ; ; Palma, Mario Sergio; (Natural Toxins, 1993) [Artigo]
Three new venom peptides were isolated from the Brazilian wasp; Protonectarina sylveirae and their complete amino acid sequences were determined by Edman degradation as well as by FAB‐mass spectrometry. One (P‐8) of them ... -
Antarctic-derived yeasts: taxonomic identification and resistance to adverse conditions
(Anais da Academia Brasileira de Ciencias, 2022) [Artigo]Antarctic harsh conditions favor the development of microbial adaptations. In this study, a molecular approach was applied to identify/refine the taxonomy of five yeasts isolated from different Antarctic samples, which ... -
Composição florística e estratégias de dispersão de espécies lenhosas em uma floresta ribeirinha, arroio Passo das Tropas, Santa Maria, RS, Brasil
(Iheringia - Serie Botanica, 2005) [Artigo]Riverside forests are extremely important because they play a great role as biological corridors, keeping the water quality and of the ictiological fauna. In the context of its dynamical process, the dispersal of plant ... -
Toxic effects of methanolic and dichloromethane extracts of flowers and peduncles of stryphnodendron adstringens (leguminosae: Mimosoideae) on apis mellifera and scaptotrigona postica workers
(Journal of Apicultural Research, 2006) [Artigo]Laboratory bioassays were conducted to evaluate toxicity of methanolic and dichloromethane extracts obtained from Stryphnodendron adstringens to Apis mellifera and Scaptotrigona postica workers. The extracts were incorporated ... -
Differences in quantity of food in worker and male brood cells of Scaptotrigona postica (Latr. 1807) (Hymenoptera, Apidae)
(Insectes Sociaux, 1982) [Artigo]Workers and males of the stingless bee Scaptotrigona postica emerge from morphologically similar cells. Normally only one bee is reared in each brood cell, but we found that some of the cells, interspersed throughout the ... -
A specialized midgut region in stingless bees (Hymenoptera:Apidae:Meliponinae)
(Biocell, 1996) [Artigo]Ultrastructure of the anterior end of the midgut of three Neotropical stingless bees, including an obligate necrophagous species Trigona hypogea, suggests that this midgut region has no role in nutrient absorption because ... -
Chromosome banding in three species of Brazilian toads (Amphibia-Bufonidae)
(Brazilian Journal of Genetics, 1996) [Artigo]The chromosomes of Bufo crucifer, B. ictericus, and B. paracnemis were studied by conventional staining as well as with C banding and NOR techniques. These species have a diploid number of 2n = 22 and identical karyotypes, ... -
Incipient colonies of the neotropical termite Cornitermes cumulans (Isoptera: Termitidae): comparing monogamy and polygamy as reproductive strategies
; ; ; Costa-Leonardo, A. M.; (Insectes Sociaux, 2022) [Artigo]
A termite colony is generally founded by a monogamous pair of alates during swarming. However, primary polygyny resulting from pleometrotic associations has been recorded for some termites. These multiple queens may continue ... -
Seminal fluid and spermatophore production in a western Atlantic invasive swimming crab, Charybdis hellerii, reveals a different pattern to Portunoidea
Watanabe, Timóteo T.; ; Zara, Fernando J. (Arthropod Structure and Development, 2022) [Artigo]
The male reproductive system in Portunoidea is voluminous in order to produce the sperm plug, avoiding sperm competition. The portunid crab, Charybdis hellerii, is a successful invasive species, and this study describes ... -
Phytogeographic Meta-Analysis of the Vascular Epiphytes in the Neotropical Region
Marcusso, Gabriel Mendes; Kamimura, Vitor de Andrade ; Borgiani, Renan ; ; Lombardi, Julio Antonio (Botanical Review, 2022) [Resenha]
The Neotropical Region (NR) is one of the areas with the most plant diversity globally, and its richness of vascular epiphyte (VE) species is higher than Africa and Asia combined. This richness is a consequence of the ... -
New insights into the six decades of Mesa's hypothesis of chromosomal evolution in Ommexechinae grasshoppers (Orthoptera: Acridoidea)
; Cabral-De-Mello, Diogo C.; ; Martí, Emiliano ; ; ; (Zoological Journal of the Linnean Society, 2021) [Artigo]
In Acridoidea grasshoppers, chromosomal rearrangements are frequently found as deviations from the standard acrocentric karyotype (2n = 23♂/24♀, FN = 23♂/24♀) in either phylogenetically unrelated species or shared by closely ... -
Biological and inflammatory effects of antigen 5 from polybia paulista (Hymenoptera, vespidae) venom in mouse intraperitoneal macrophages
Bazon, Murilo Luiz; ; Assugeni, Isabela Oliveira Sandrini ; Pinto, Lucas Machado ; ; ; Braga, Márcia Regina Brochetto (Toxins, 2021) [Artigo]
The social wasp Polybia paulista (Hymenoptera, Vespidae) is highly aggressive, being responsible for many medical occurrences. One of the most allergenic components of this venom is Antigen 5 (Poly p 5). The possible ... -
The experience of teaching introductory programming skills to bioscientists in Brazil
; ; ; Bizarria, Rodolfo; ; ; ; ; ; et al. (PLoS Computational Biology, 2021) [Artigo]
Computational biology has gained traction as an independent scientific discipline over the last years in South America. However, there is still a growing need for bioscientists, from different backgrounds, with different ... -
The Specific Elongation Factor to Selenocysteine Incorporation in Escherichia coli: Unique tRNASec Recognition and its Interactions
; ; ; ; Crusca Júnior, Edson; Cornélio, Marinônio Lopes ; de Souza, Bibiana Monson ; Palma, Mário Sérgio ; de Oliveira Neto, Mario ; (Journal of Molecular Biology, 2021) [Artigo]
Several molecular mechanisms are involved in the genetic code interpretation during translation, as codon degeneration for the incorporation of rare amino acids. One mechanism that stands out is selenocysteine (Sec), which ... -
Floral development and vasculature in Eriocaulon (Eriocaulaceae) provide insights into the evolution of Poales
De Lima Silva, Arthur; ; ; ; Sajo, Maria Das Graças ; Coan, Alessandra Ike (Annals of Botany, 2021) [Artigo]
Background and Aims: Floral developmental studies are crucial for understanding the evolution of floral structures and sexual systems in angiosperms. Within the monocot order Poales, both subfamilies of Eriocaulaceae have ...