44 documents found, page 1 of 5

Sex determination in bees. XXX. Effects of juvenile hormone on the development ...

Made available in DSpace on 2022-04-28T20:01:12Z (GMT). No. of bitstreams: 0 Previous issue date: 1994-01-01; Worker larvae of Melipona rufiventris, M. quadrifasciata and M. compressipes were treated topically with juvenile hormone (JH) during the cocoon-spinning phase. Examination of the tergites of the queens obtained following JH application showed induced differentiation into adults with full female (queen)...

Mutation in Honeybees 2. Average Rate of Mutation Based on Seven Genes for Eye ...

Made available in DSpace on 2022-04-28T20:10:58Z (GMT). No. of bitstreams: 0 Previous issue date: 1983-01-01; The average numbers of ommatidia in the eyes of workers was 3826 and in the eyes of males 7082. Somatic mutations from recessive to dominant were detected in 7 genes, some reported in this paper, some in an earlier publication. The rates of reverse mutation estimated for males were: for chr, µ=3 38 × 10...

Tropicologia

Um Trips como Praga do Piquiá

Estrutura multidimensional dos Meliponídeos ()

Estudou-se 12 variáveis de 21 espécies de Meliponídeos. Como medida de semelhança morfológica estimou-se a distância generalizada de Mahalanobis. Quatro figuras representam as distâncias estimadas. Conclui-se que, das espécies estudadas, Melipona rufiventris, M. seminigra e M. scutellaris são próximas e formam um aglomerado. O trigoníneo mais próximo do gênero Melipona é a Meliponula bocandei e o grupo das Part...

Acta Amazônica. 1971-1975

Cupá, ou cipó-babão, alimento de alguns índios amazônicos

INPA is developing studies concerning the agricultural plants of the Brazilian Indians. a collection was made among the Kayapó Indians of the Cupa vine (Cissus gongylodes Burch. ex Baker, Vitaceae). This note provides botanical information on this plant, its uses by the seringueiros (rubber collectors) and by the indians, and agronomical and chemical data.

Pollen morphology and study of the visitors (Hymenoptera, Apidae) of Solanum st...

A família Solanaceae tem ampla distribuição, principalmente nas áreas tropicais e subtropicais da América do Sul. Solanum L. é um dos mais importantes gêneros desta família com aproximadamente 1.200 espécies. O objetivo deste trabalho foi o de estudar a biologia floral com enfoque na morfologia polínica e no registro de algumas abelhas visitantes de S. stramoniifolium. Dados preliminares indicam a presença de u...

Efeito do Hormônio Juvenil III e do choque de temperatura na determinação de ca...

Infestation by Pyemotes tritici (Acari, Pyemotidae) causes death of stingless b...

We report the infestation of stingless bee nests by the mite Pyemotes tritici, which killed four colonies of Tetragonisca angustula and one colony of Frieseomelitta varia in Brazil. The first infected colony, a colony of T. angustula, came from an area between Uberlândia and Araguari, Minas Gerais. The transfer of the mites to the other colonies occurred through the transfer of infected combs and subsequent man...