search
for
 About Bioline  All Journals  Testimonials  Membership  News  Donations


Chilean Journal of Agricultural Research
Instituto de Investigaciones Agropecuarias, INIA
ISSN: 0718-5820
EISSN: 0718-5839
Vol. 72, No. 2, 2012, pp. 285-289
Bioline Code: cj12045
Full paper language: English
Document type: Note
Document available free of charge

Chilean Journal of Agricultural Research, Vol. 72, No. 2, 2012, pp. 285-289

 en ACUTE CONTACT TOXICITY TEST OF OXALIC ACID ON HONEYBEES IN THE SOUTHWESTERN ZONE OF URUGUAY
Carrasco-Letelier, Leonidas; Mendoza, Yamandú & Ramallo, Gustavo

Abstract

This work studies the acute contact toxicity of oxalic acid (OA) on a honeybee polyhybrid subspecies ( Apis mellifera check for this species in other resources ), which is the dominant biotype in southwestern zone of Uruguay (SWZU) and the country’s most important honey-producing region. We determined the mean lethal dose (LD50), as well as the no observed effect level (NOEL) and the lowest observed effect level (LOEL) values. We also estimated the total number of honeybees per hive in the test area. The aim was to assess the relationship between the maximum OA dose used in Uruguay (3.1 g OA per hive) and the toxicological parameters of honeybees from SWZU. The current dose of 3.1 g OA per hive corresponds to 132.8 μg OA per honeybee since determined NOEL is 400 μg OA per honeybee; our results indicate that the current dose could be increased to 9.3 g OA per hive. The results also highlight some differences between the LD50 value in SWZU honeybees (548.95 μg OA per honeybee) and some published LD50 values for other honeybee subspecies.

Keywords
LD50, Varroa destructor, Uruguay

 
© Copyright 2012 - Chilean Journal of Agricultural Research
Alternative site location: http://www.inia.cl

Home Faq Resources Email Bioline
© Bioline International, 1989 - 2017, Site last up-dated on 05-Dec-2017.
Site created and maintained by the Reference Center on Environmental Information, CRIA, Brazil
System hosted by the Internet Data Center of Rede Nacional de Ensino e Pesquisa, RNP, Brazil