Bibliothek

feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
  • Digitale Medien  (2)
  • 1995-1999  (2)
  • 1995  (2)
  • Foraging preference  (1)
  • Morbidity  (1)
Materialart
  • Digitale Medien  (2)
Erscheinungszeitraum
  • 1995-1999  (2)
Jahr
  • 1
    ISSN: 1432-1939
    Schlagwort(e): Apis mellifera ; Lavandula stoechas ; Pollen content ; Nectar content ; Foraging preference
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Bees foraging for nectar should choose different inflorescences from those foraging for both pollen and nectar, if inflorescences consist of differing proportions of male and female flowers, particularly if the sex phases of the flowers differ in nectar content as well as the occurrence of pollen. This study tested this prediction using worker honey bees (Apis mellifera L.) foraging on inflorescences of Lavandula stoechas. Female flowers contained about twice the volume of nectar of male flowers. As one would predict, bees foraging for nectar only chose inflorescences with disproportionately more female flowers: time spent on the inflorescence was correlated with the number of female flowers, but not with the number of male flowers. Inflorescence size was inversely correlated with the number of female flowers, and could be used as a morphological cue by these bees. Also as predicted, workers foraging for both pollen and nectar chose inflorescences with relatively greater numbers of both male and female flowers: time spent on these inflorescences was correlated with the number of male flowers, but not with the number of females flowers. A morphological cue inversely associated with such inflorescences is the size of the bract display. Choice of flowers within inflorescences was also influenced predictably, but preferences appeared to be based upon corolla size rather than directly on sex phase.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 2
    Digitale Medien
    Digitale Medien
    Springer
    European journal of epidemiology 11 (1995), S. 403-414 
    ISSN: 1573-7284
    Schlagwort(e): Aging ; Drug consumption ; Health studies ; Morbidity ; Mortality
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract A descriptive study was made of the health indicators in 5 rural municipalities of the province of Castellón (Spain), with a total of 1428 inhabitants. This population is characterized by its aging, 36.9% of all individuals being older than 65 years. A retrospective evaluation was made of the annual mortality rates between 1940 and 1990, and of morbidity and medications consumption for the period between June 1991 and May 1992. An increase in general mortality was observed during the study period, though the rates also diminished in relation to age groups, sex and cause of death. In addition, 59.45% of the study population made use of healthcare services in the course of one year, an average of 2.59 drugs being prescribed per inhabitant in that same period. Morbidity in decreasing order of importance was attributed to acute respiratory disease, osteomuscular disorders, hypertension, depression and gastric pathology. Medications for the common cold and coughing were the most frequently used drugs, along with pain-killers, cardioactive agents, psycholeptics and non-sterioidal anti-inflammatory drugs (NSAIDs). Aging causes the mortality variations recorded, despite the socio-sanitary improvements observed in the zone during the study period. Aging may also be related to the important use of healthcare services and of drugs noted in the study. The highest morbidity rates and drug consumption levels corresponded to chronic diseases that deteriorate patient quality of life without actually increasing mortality.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...