Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Dirk Koedam"'
Publikováno v:
Sociobiology, Vol 61, Iss 4 (2014)
ABSTRACT - Melipona subnitida, popularly also known as jandaíra, is the most frequently domesticated bee in the dry northeastern part of Brazil, and like most other stingless bee species nest in hollow spaces in trees. However, in a small region of
Externí odkaz:
https://doaj.org/article/33edc073b622496289d038c9460ae85f
Autor:
Gudrun Herzner, Martin Kaltenpoth, Theodor Poettinger, Katharina Weiss, Dirk Koedam, Johannes Kroiss, Erhard Strohm
Publikováno v:
PLoS ONE, Vol 8, Iss 12, p e82780 (2013)
Microbes pose severe threats to animals as competitors or pathogens and strongly affect the evolution of life history traits like parental care. Females of the European beewolf Philanthus triangulum, a solitary digger wasp, provision their offspring
Externí odkaz:
https://doaj.org/article/106b44ca27214f049050cf76ceeb850d
Autor:
Dirk Koedam
Publikováno v:
Ethnoscientia: Revista Brasileira de Etnobiologia e Etnoecologia; Ethnoscientia, v.4, n.1 (2019)
Mayas from the pre-Hispanic period documented important facts and life experiences via a writing system consisting of hieroglyphs. To timetable these events, they used time units such as the so-called day signs, whose origins are largely unknown. Cla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dbb7c1b73042bedebfecb05135afa5b2
https://doi.org/10.22276/ethnoscientia.v4i1.225
https://doi.org/10.22276/ethnoscientia.v4i1.225
Autor:
Dirk Koedam
Publikováno v:
Ethnoscientia: Revista Brasileira de Etnobiologia e Etnoecologia; v. 3 (2018): Ethnoscientia-Vol.3
The characteristic signs for natural numbers and zero that pre-Hispanic Maya scribes used to depict counting facts must have been developed based on daily life experience, although for several of them their origins remain unclear. One such case is th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dfdc58c1099588312f51fd1f7edcd899
https://doi.org/10.18542/ethnoscientia.v3i0.10194
https://doi.org/10.18542/ethnoscientia.v3i0.10194
Autor:
Camila Maia-Silva, Vera Lúcia Imperatriz-Fonseca, Michael Hrncir, Renato Jose Pires Machado, Dirk Koedam
Publikováno v:
Naturwissenschaften. 100:101-105
Between April and June of 2012 mantisflies (Plega hagenella) were found to be extensively parasitizing the nests of two groups of managed colonzies of eusocial stingless bees (Melipona subnitida) in the semi-arid region of northeastern Brazil. The ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::17b5356403ac7ba40fa5026807b93efb
https://doi.org/10.1007/s00114-012-0994-1
https://doi.org/10.1007/s00114-012-0994-1
Publikováno v:
Physiological Entomology. 35:196-200
Several insect taxa have evolved symbioses with actinobacteria that protect the host or its nutritional resources against pathogens. Digger wasps of the genus Philanthus (‘beewolves’; Hymenoptera, Crabronidae) cultivate ‘Candidatus Streptomyces
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08d5abcc50a7735bddd63e75320e9d94
https://doi.org/10.1111/j.1365-3032.2010.00729.x
https://doi.org/10.1111/j.1365-3032.2010.00729.x
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
In the eusocial Hymenoptera, reproductive division of labour is a key aspect of colony organisation. In most of its species, workers are sterile and are unable to reproduce, while the queen monopolises reproduction. When workers are able to reproduce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::965857e560702f72d6cc0c43f262644a
https://doi.org/10.1007/s00040-009-0058-5
https://doi.org/10.1007/s00040-009-0058-5
Publikováno v:
Apidologie. 38:55-66
We studied queen-worker conflict over male production in a Melipona bicolor colony, having three physogastric queens and individually marked workers, by means of observations of the processes of cell oviposition. The gender that developed from these
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0991be82c27c26612d5d966c6b3ae69e
https://doi.org/10.1051/apido:2006053
https://doi.org/10.1051/apido:2006053
Autor:
Martin Giurfa, Jacobus C. Biesmeijer, Simon G. Potts, Amots Dafni, Dirk Koedam, Daniel M. Joel
Publikováno v:
Naturwissenschaften. 92:444-450
Several recent hypotheses, including sensory drive and sensory exploitation, suggest that receiver biases may drive selection of biological signals in the context of sexual selection. Here we suggest that a similar mechanism may have led to convergen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f5186f554d53119a45df4bc88792355
https://doi.org/10.1007/s00114-005-0017-6
https://doi.org/10.1007/s00114-005-0017-6
Publikováno v:
Insectes Sociaux. 52:114-121
Potential conflict between the queen and workers over the production of males is expected in stingless bees as a result of the higher relatedness of workers with their sons than with their brothers. This conflict was studied in Melipona subnitida by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76e78dac94dc8353d603e2e855adb90b
https://doi.org/10.1007/s00040-004-0781-x
https://doi.org/10.1007/s00040-004-0781-x