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Thursday, September 04, 2014

Cold narcosis affects locomotive skills and memory acquisition but not memory retrieval in honeybees -- Zoological Research Vol.35 No.2

There have been previous studies done on the memory of insects due to their easily identifiable cells in their small nervous systems1. The issue of Zoological Research that we are featuring today, vol.35 no.2, includes "Effects of cold narcosis on memory acquisition, consolidation and retrieval in honeybees (Apis mellifera)" by Chen et al. This study used the proboscis extension response (PER) paradigm to assess how associative memories were affected by cold narcosis. Severe memory acquisition impairment was found after testing the honeybees 30 after cold narcosis compared to 1 hour. Locomotive impairment was also found after testing the honeybees 15 minutes after cold narcosis compared to 30 minutes. The results indicated that cold narcosis does affect locomotive skills and memory acquisition but not memory retrieval.

This issue also includes "Factors determining the average body size of geographically separated Arctodiaptomus salinus (Daday, 1885) populations" by Anufriieva et al. This study aimed to examine the factors affecting the populations of Arctodiaptomus salinus in Eurasia and Africa. The results indicated that in Crimean and African populations, there was a correlation between size of the Arctodiaptomus salinus and water temperature, which could also be influenced by water salinity. Arctodiaptomus salinus from temporary reservoirs had a smaller body weight than those living in permanent bodies of water.

For the complete results of these studies and other articles from this issue, click here.


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