scholarly journals Ovarian activation in Melipona quadrifasciata queens triggered by mating plug stimulation (Hymenoptera, Apidae)

Apidologie ◽  
2001 ◽  
Vol 32 (4) ◽  
pp. 355-361 ◽  
Author(s):  
Gabriel A.R. Melo ◽  
Maria Luisa T. Buschini ◽  
Lucio A.O. Campos
Keyword(s):  
Mating Plug ◽  
Melipona Quadrifasciata ◽  
Ovarian Activation

The Effects of the sphragis on male and female genitalia in Acraea (Nymphalidae) butterflies

2020 ◽  
Vol 22 ◽  
Author(s):  
Shannon L Summers ◽  
Akito Y Kawahara ◽  
Ana P. S. Carvalho
Keyword(s):  
Interspecific Variation ◽  
Sperm Storage ◽  
Male Mating ◽  
Museum Collections ◽  
Storage Organ ◽  
Mating Plug ◽  
Males And Females ◽  
Comparison And Analysis ◽  
Imagej Software ◽  
Sexually Antagonistic Coevolution

Male mating plugs have been used in many species to prevent female re-mating and sperm competition. One of the most extreme examples of a mating plug is the sphragis, which is a large, complex and externalized plug found only in butterflies. This structure is found in many species in the genus Acraea (Nymphalidae) and provides an opportunity for investigation of the effects of the sphragis on the morphology of the genitalia, which is poorly understood. This study aims to understand morphological interspecific variation in the genitalia of Acraea butterflies. Using specimens from museum collections, abdomen dissections were conducted on 19 species of Acraea: 9 sphragis bearing and 10 non-sphragis bearing species. Genitalia imaging was performed for easier comparison and analysis and measurements of genitalia structures was done using ImageJ software. Some distinguishing morphological features in the females were found. The most obvious difference is the larger and more externalized copulatory opening in sphragis bearing species, with varying degrees of external projections. Females of the sphragis bearing species also tend to have a shorter ductus (the structure that connects the copulatory opening with the sperm storage organ) than those without the sphragis. These differences may be due to a sexually antagonistic coevolution between the males and females, where the females evolve larger and more difficult to plug copulatory openings and the males attempt to prevent re-mating with the sphragis.

scholarly journals Chemical Variation among Castes, Female Life Stages and Populations of the Facultative Eusocial Sweat Bee Halictus rubicundus (Hymenoptera: Halictidae)

2021 ◽  
Author(s):  
Iris Steitz ◽  
Robert J Paxton ◽  
Stefan Schulz ◽  
Manfred Ayasse
Keyword(s):  
Chemical Communication ◽  
North American ◽  
Specific Chemical ◽  
Eusocial Insects ◽  
Queen Signal ◽  
Ovarian Activation ◽  
Chemical Profiles ◽  
Reproductive Division Of Labor ◽  
Reproductive Division ◽  
Eusocial Species

AbstractIn eusocial insects, chemical communication is crucial for mediating many aspects of social activities, especially the regulation of reproduction. Though queen signals are known to decrease ovarian activation of workers in highly eusocial species, little is known about their evolution. In contrast, some primitively eusocial species are thought to control worker reproduction through physical aggression by the queen rather than via pheromones, suggesting the evolutionary establishment of chemical signals with more derived sociality. However, studies supporting this hypothesis are largely missing. Socially polymorphic halictid bees, such as Halictus rubicundus, with social and solitary populations in both Europe and North America, offer excellent opportunities to illuminate the evolution of caste-specific signals. Here we compared the chemical profiles of social and solitary populations from both continents and tested whether (i) population or social level affect chemical dissimilarity and whether (ii) caste-specific patterns reflect a conserved queen signal. Our results demonstrate unique odor profiles of European and North American populations, mainly due to different isomers of n-alkenes and macrocyclic lactones; chemical differences may be indicative of phylogeographic drift in odor profiles. We also found common compounds overproduced in queens compared to workers in both populations, indicating a potential conserved queen signal. However, North American populations have a lower caste-specific chemical dissimilarity than European populations which raises the question if both use different mechanisms of regulating reproductive division of labor. Therefore, our study gives new insights into the evolution of eusocial behavior and the role of chemical communication in the inhibition of reproduction.

scholarly journals Analyses of G-bands in chromosomes of the Melipona quadrifasciata anthidioides Lepeletier (Hymenoptera, Apidae, Meliponinae).

CYTOLOGIA ◽  
1979 ◽  
Vol 44 (1) ◽  
pp. 21-27 ◽  
Author(s):  
Antonio J. Tambasco ◽  
Marcos A. Giannoni ◽  
Lilia M. de Azevedo Moreira
Keyword(s):  
Melipona Quadrifasciata

Biochemical variants in the study of multiple insemination in Culex pipiens L. (Diptera, Culicidae)

1976 ◽  
Vol 65 (4) ◽  
pp. 683-685 ◽  
Author(s):  
L. Bullini ◽  
M. Coluzzi ◽  
A. P. Bianchi Bullini
Keyword(s):  
Latent Period ◽  
Culex Pipiens ◽  
Accessory Gland ◽  
New Approach ◽  
Mating Plug

AbstractA new approach to the study of multiple insemination in mosquitoes or other organisms involving the use of electrophoretic enzyme variants is described. Data obtained on Culex pipiens L. with this technique confirm the basic monogamy of the species and suggest that multiple insemination may occur almost exclusively within 48 h after the first mating. Two independent mechanisms are probably acting in preventing multiple insemination. The first, probably the formation of a mucoid mating plug during the first copulation, allows the fertilisation of a further 10% of eggs by the second male in double inseminations; the second, the accessory gland pheromone (matrone), after an initial latent period, totally prevents a second insemination for the duration of the mosquito's life.

POTENCIAL ECONÔMICO SUSTENTÁVEL DE CRIAÇÃO DE ABELHAS INDÍGENAS SEM FERRÃO EM MURICI DOS PORTELAS-PI

2021 ◽  
Author(s):  
Braulio Fernandes de Carvalho ◽  
Gustavo Nogueira Barreto
Keyword(s):  
Google Earth ◽  
Melipona Quadrifasciata ◽  
Melipona Subnitida ◽  
Melipona Marginata ◽  
Scaptotrigona Postica

Introdução: No Brasil existem cerca de 250 espécies de abelhas da tribo Meliponini, muitas das quais estão ameaçadas de extinção, seja pela coleta e destruição de seus ninhos, corte de árvores usadas na nidificação e forrageio e pelo uso de agrotóxicos. Garantir áreas de vegetação nativa protegidas do desmatamento e do uso de agrotóxicos é essencial para garantir a sobrevivência dessas abelhas e os seus serviços ecossistêmicos, como a polinização de plantas nativas e culturas agrícolas. Objetivo: Identificar espécies de abelhas indígenas adequadas para criação em propriedade rural privada, em Murici dos Portelas-PI, onde se pretende criar Reserva Particular do Patrimônio Natural (RPPN), em parte desta. Material e métodos: Analisou-se imagens da propriedade, de 52 ha, localizada em 3°15’46.96’’S e 41°57’04.25’’, através de dados obtidos pelo software Google Earth PRO; fez-se 3 visitas ao local, de junho a setembro de 2021, para identificação de fitofisionomia; realizou-se estudo de artigos científicos para identificação de espécies de meliponíneos nativos com ocorrência no estado do Piauí. Resultados: A área consiste em vegetação arbórea de médio porte, dos domínios de Cerrado e Caatinga. A pesquisa bibliográfica identificou as seguintes espécies de abelhas sem ferrão descritas para o Piauí: Mombuca-vermelha (Camargoia nordestina), Moça-branca (Friesiomelitta doederleini), Friesiomelitta flavicornis, Frieseomelitta silvestrii, Mombuca (Geotrigona mombuca), Iraxim (Lestrimelitta rufipes), Manduri (Melipona asilvai), Tiúba (Melipona compressipes), Uruçu-boi (Melipona fuliginosa), Tiúba-grande (Melipona fasciculata), Mandaçaia (Melipona mandacaia), Munduri (Melipona marginata), Mandaçaia (Melipona quadrifasciata), Bugia (Melipona rufiventris), Mandaçaia-da-terra (Melipona quinquefasciata), Uruçu (Melipona scutellaris), Jandaíra (Melipona subnitida), Mirim-da-terra (Paratrigona lineata), Cupira (Partamona ailyae), Boca-de-barro (Partamona chapadicola), Jati (Plebeia flavocincta), Imrê-ti (Scaptotrigona polysticta), Mandaguari (Scaptotrigona postica), Tuibá (Scaptotrigona tubiba), Borá (Tetragona clavipes), Arapuá (Trigona spinipes), Xupé (Trigona hyalinata), Feiticeira (Trigona recursa),Trigonisca sp.. Conclusão: Sugere-se criação das espécies listadas na propriedade, levando-se em conta fatores ambientais e biológicos envolvidos na manutenção da viabilidade de cada espécie. Recomenda-se obtenção de matrizes em criadouros autorizados e iniciar criação comercial, com produção de mel e multiplicação de colmeias. A atividade tem potencial econômico sustentável e poderia ser realizada na área não transformada em RPPN, contribuindo para a economia local e conservação de abelhas indígenas.

Antioxidant and antimutagenic activities of propolis from the Melipona quadrifasciata anthidioides (Hymenoptera, Apidae)

2018 ◽  
Vol 128 ◽  
pp. S66
Author(s):  
Jaqueline Ferreira Campos ◽  
Paola da Rocha ◽  
Thaliny Bonamigo ◽  
Tamaeh Monteiro Alfredo ◽  
José Benedito Perrella Balestieri ◽  
...  
Keyword(s):  
Melipona Quadrifasciata
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