Results 111 to 120 of about 187 (137)
Survey of preys captured and used by Polybia platycephala (Richards) (Hymenoptera: Vespidae, Epiponini) [PDF]
Neotropical Entomology, 2005 The social wasps are predators of several species of insects and the study of their preys can reveal their potential for programs of biological pest control. During the period of September 2000 to January 2002, were accomplished 70h of collections of the preys captured in twelve nests of Polybia platycephala Richards, placed in urban areas of Juiz de ...
Fabio Prezoto
exaly +5 more sources
Entomologica Americana, 2009 Abstract Characters of adult morphology, male genitalia, and nest architecture are combined in a cladistic analysis of the neotropical paper wasp genus Synoeca. The single resulting cladogram supports the monophyly of genus. The species are related as follows: S. chalibea + (S. virginea + (S. septentrionalis + (S. surinama + S. cyanea))).
Sérgio R Andena +2 more
exaly +3 more sources
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Neotropical Entomology, 2013
The division of labor is a central theme in the study of social insects. In bees and wasps, this activity is regulated by age polyethism. Important physiological and morphological changes have been widely studied in the polyethism of honeybee workers. In contrast, this is a relatively unexplored subject in social vespids.
Garcia, Z. J., Noll, F. B.
openaire +3 more sources
The division of labor is a central theme in the study of social insects. In bees and wasps, this activity is regulated by age polyethism. Important physiological and morphological changes have been widely studied in the polyethism of honeybee workers. In contrast, this is a relatively unexplored subject in social vespids.
Garcia, Z. J., Noll, F. B.
openaire +3 more sources
Insectes Sociaux, 2004
In the Epiponini, queen number may vary from many to few during the colonial cycle. This cyclical oligogyny may be important for the maintenance of high genetic relatedness found in several taxa of epiponines. Even though queen reduction in accord with the colony cycle has either been demonstrated or inferred for many taxa, the factors responsible for ...
Fabio SANTOS DO Nascimento +1 more
exaly +2 more sources
In the Epiponini, queen number may vary from many to few during the colonial cycle. This cyclical oligogyny may be important for the maintenance of high genetic relatedness found in several taxa of epiponines. Even though queen reduction in accord with the colony cycle has either been demonstrated or inferred for many taxa, the factors responsible for ...
Fabio SANTOS DO Nascimento +1 more
exaly +2 more sources
Insectes Sociaux, 2002
In neotropical swarm-founding wasps, caste differences can be arranged along a spectrum ranging from taxa in which queens and workers are externally similar, to others with fairly distinct caste attributes. In this study, queen-worker differences progressively increase during colony development in Protopolybia exigua and Chartergus globiventris.
F. B. Noll, R. Zucchi
openaire +1 more source
In neotropical swarm-founding wasps, caste differences can be arranged along a spectrum ranging from taxa in which queens and workers are externally similar, to others with fairly distinct caste attributes. In this study, queen-worker differences progressively increase during colony development in Protopolybia exigua and Chartergus globiventris.
F. B. Noll, R. Zucchi
openaire +1 more source
Journal of the New York Entomological Society, 2003 Morphological caste differences and ovary conditions were analyzed in four colonies of Brachygastra augusti collected in different stages of the colony cycle. Differences between castes are distinct suggesting pre-imaginal determination. Many intermediates (non-inseminated ovary-developed females) were found.
Fernando Barbosa Noll, Ronaldo Zucchi
exaly +3 more sources
Journal of Natural History, 2009
A cladistic analysis of the swarm‐founding neotropical social wasp genus Charterginus is presented. A single cladogram resulted from the analysis of 31 morphological characters and six nest characters, with relationships among the species as follows: ((C. fulvus + C. xanthura) + (C. weyrauchi + (C. nevermanni + (C. carinatus + C. zavattarii)))).
Andena, Sergio R. +2 more
openaire +3 more sources
A cladistic analysis of the swarm‐founding neotropical social wasp genus Charterginus is presented. A single cladogram resulted from the analysis of 31 morphological characters and six nest characters, with relationships among the species as follows: ((C. fulvus + C. xanthura) + (C. weyrauchi + (C. nevermanni + (C. carinatus + C. zavattarii)))).
Andena, Sergio R. +2 more
openaire +3 more sources
Toxicon, 2007
In a previous study, we showed that the Polybia paulista wasp venom causes strong myonecrosis. This study was undertaken to characterize the myotoxic potency of mastoparan (Polybia-MPII) isolated from venom (0.25 microg/microl) and injected in the tibial anterior (TA) muscle (i.m.) of Balb/c mice.
Rocha T +3 more
openaire +3 more sources
In a previous study, we showed that the Polybia paulista wasp venom causes strong myonecrosis. This study was undertaken to characterize the myotoxic potency of mastoparan (Polybia-MPII) isolated from venom (0.25 microg/microl) and injected in the tibial anterior (TA) muscle (i.m.) of Balb/c mice.
Rocha T +3 more
openaire +3 more sources
Morphological and physiological variation between queens and workers of Protonectarina sylveirae (de Saussure) (Hymenoptera, Vespidae, Epiponini) [PDF]
Revista Brasileira De Entomologia, 2010 Morphological and physiological variation between queens and workers of Protonectarina sylveirae (de Saussure) (Hymenoptera, Vespidae, Epiponini). The Neotropical swarm-founding wasps, Epiponini, range from the absence of morphological differentiation between castes to highly distinct castes.
Fernando Barbosa Noll
exaly +5 more sources
Insectes Sociaux, 1995
Colonies and nests ofApoica pallens in the llanos region of Venezuela range from small foundress nests to large mature colonies. Nests are sited on small diameter, near-horizontal branches in a variety of shrub and tree species. During the day, adult wasps cluster on the face of the nest in an array that seems to be determined by orientation to gravity;
J. H. Hunt, R. L. Jeanne, M. G. Keeping
openaire +1 more source
Colonies and nests ofApoica pallens in the llanos region of Venezuela range from small foundress nests to large mature colonies. Nests are sited on small diameter, near-horizontal branches in a variety of shrub and tree species. During the day, adult wasps cluster on the face of the nest in an array that seems to be determined by orientation to gravity;
J. H. Hunt, R. L. Jeanne, M. G. Keeping
openaire +1 more source