ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Insectes sociaux 41 (1994), S. 99-110 
    ISSN: 1420-9098
    Keywords: Nesting biology ; nest re-use ; Eulaema nigrita ; Euglossini ; Apidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The nesting behavior of the euglossine beeEulaema nigrita was observed in the laboratory after being transferred from three nests to observation boxes. Nests were re-used by successive generations with more than one female working in each re-use process. Associated females were always of the same generation. All females that shared a nest foraged for construction materials (mud, excrement and resin) and each constructed, provisioned and oviposited in her own cells. The number of cells constructed by each female ranged from one to 23. Females stayed in the nests for periods ranging from 15 to 59 days during the hot and wet season and from five to 78 days during the cool and dry season. The egg-to-adult period was related to climatic conditions, and in all re-use processes it was longer than the time of residence of the females in the nests. The meloid beetleMeloetyphlus attacephalus was the only nest parasite. Due to the attack method employed by this parasite, the presence of more than one female in the nest did not result in improved nest defense.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1420-9098
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Wir haben das Zusammenleben von meheren Weibchen in Nestern vonXylocopa suspecta, X. frontalis undX. grisescens, den häufigsten Arten in der Region von Ribeirão Preto, S.P., Brasilien, untersucht. Nahrungssammeln und Fortpflanzung der Weibchen wurde als Maß für das Sozialverhalten gewertet. Die Bildung einer Gemeinschaft begann am Ende des biologischen Zyklus', wenn die Nester erneut benutzt wurden. Zu Beginn bestanden die Gemeinschaften aus der Mutter und ihren Töchtern. Anschließend waren nur die Töchter im Nest, von denen eine, gewöhnlich das älteste Weibchen, Eier legte (erste Phase). Im nächsten Stadium waren zwei oder mehr Weibchen in der Lage, Eier zu legen; sie versorgten gemeinsam dieselben Zellen mit Nahrung und legten Eier. In der dritten Phase legten alle Weibchen Eier, jede versorgte aber ihre eigenen Zellen. Das Sozialverhalten in der ersten Phase wird als semisozial, das Verhalten in der zweiten Phase als quasisozial angesehen. Diese Verhaltensmuster traten jedoch nur vorübergehend auf, denn im letzten Stadium zeigten die Weibchen ein kommunales Sozialverhalten.
    Notes: Summary We have investigated the occurrence of cohabitation of several females in the same nest ofXylocopa suspecta, X. frontalis andX. grisescens which are the most common species in the region of Ribeirão Preto, S.P., Brazil. The study of social behaviour of these species involved, as a general procedure, the identification of each associated female in relation to its foraging and reproductive activity. It was observed that in each species the association of females started at the final phase of the biological cycle, when the reactivation of the nests began. Initially the association was observed to occur among mother and daughters. Subsequently only daughters remained in the nest and in the first phase of this association only one female (generally the eldest), was able to realize oviposition. Next, two ore more females were in the same condition, provisioning and ovipositing in only one cell. In the third phase the females had all the same condition, each one of them provisioning and ovipositing in their own cells. So, in the first and second phases the social behaviour corresponds to the semisocial and quasisocial levels, respectively. Nevertheless, this behaviour was transitory and the final pattern attained was communal.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1420-9098
    Keywords: Nest re-use ; communal nesting ; nest defense ; Microthurge corumbae ; Megachilidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Observations on the nesting activities ofMicrothurge corumbae, carried out at the University Campus of Ribeirão Preto, São Paulo, Brazil, from 1977 to 1981, indicated that 61.9 % of nests were re-used by succeeding generations. Re-use by one generation was more frequent than by two generations, and re-use by a third was observed only once. Nests were re-used by one or several females. Single females were more frequently in the first re-use. In these cases nest re-use did not differ essentially from the solitary foundation of a new nest, except for the adoption of a pre-existing nest without excavation. In multifemale nests, analysis of relative age (wing wear), ovarian and spermathecal conditions of associated females and the content of nests at excavation indicated that the social pattern in such colonies is communal. There is some evidence that the associated females are relatives. The chalcidoid waspLeucospis was the principal nest parasite, and ants of the genusCrematogaster were nest predators. In multifemale nests, the rate of parasitism was significantly lower than in solitary nests, indicating that nest-sharing resulted in improved nest defense. On the other hand, the absence of predation on immatures of the first generation of M.commbae in multifemale nests suggests that such nests are also more resistant to attack by predators.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 29 (1973), S. 726-727 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Mutter-Sohn-Kreuzung bei der südamerikanischen HummelBombus atratus Franklin ergab diploide Männchen mit normalen Arbeiterinnen im Verhältnis von 3 zu 1. Tur Interpretation des genetischen Mechanismus wurden 2 geschlechtsgebundene Loci angenommen, als bisher angenommen wurde, was für einen älteren Mechanismus bei Apiden spricht.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Publication Date: 1973-06-01
    Print ISSN: 0014-4754
    Topics: Biology , Medicine
    Published by Springer
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...