Loading ...
Sorry, an error occurred while loading the content.

Re: Fw: [beemonitoring] please comment on my european hornet neighbors

Expand Messages
  • Charles Guevara
      Thank you Dr.Bernhardt, and Liz...indeed I will benefit from the content you just linked to.  all the best, charlie guevara   ( we did have a frost last
    Message 1 of 2 , Oct 9, 2012
    • 0 Attachment
        Thank you Dr.Bernhardt, and Liz...indeed I will benefit from the content you just linked to.  all the best, charlie guevara   ( we did have a frost last night/10/8/12.)

      From: Peter Bernhardt <bernhap2@...>
      To: Charles Guevara <icecilliate123@...>
      Sent: Tuesday, October 9, 2012 9:34 AM
      Subject: Re: Fw: [beemonitoring] please comment on my european hornet neighbors
      Dear Mr. Guevara:

      The behavior of your wasps in autumn reminded me of a recent paper from China showing how giant Vespula wasps pollinate an autumn-flowering orchid.  Here is a link to the Abstract.  You might want to read the whole paper (nice color photos) in an appropriate library.


      Peter Bernhardt
      On Mon, Oct 8, 2012 at 8:24 PM, Charles Guevara <icecilliate123@...> wrote:

      ----- Forwarded Message -----
      From: Charles Guevara <icecilliate123@...>
      To: Parker Gambino <parkergambino@...>
      Sent: Monday, October 8, 2012 9:01 PM
      Subject: Re: [beemonitoring] please comment on my european hornet neighbors
      Thank you, this is almost terrifying to understand.  I gave my online resource, that North Carolina State U, dept entomology, in my first post.  This site noted these wasps may fly at night at which time lights may attract them.  This site noted this introduced wasp generates offspring far into a growing seasons fall, talks about nests often of 100 to 300 members, talks about the queens alone over wintering..though a cluster of over wintering queens may be encountered in the same shelter.  Yes North Carolina does not have my central NY climate, but after visiting that online resource..I feel lucky I only encounter 6-12 wasps when ever I'm in the orchard for chores.  Today I hand captured (net and wide mouth plastic jar) five wasps ..on the same apple tree...all events at the home colony by now must sense my culling activity...I've saved the over 12 wasps I captured in a jar with Ronson lighter fluid and a splash of nail polish remover-acetone.  These efficient wasps are introduced...I respect their robust adaptibility, your insights charm me to stare into the implications of climate change, global commerce, and my patch of home offering choices a biodiversity advocate must make.  Hey I'll no more wax philisophical...but thanks ,Parker, thanks Pierre...you have oriented me well subtlties of my hand on a patch of ground.
          In my large/high ceiling garage there is an egg shaped paper nest the size of a large beach-ball...it's grey papered exterior exit between the barn wood boards  permits a layer of mixed use of my garage (until I want to paint the exterior I guess?!).  thanks for this forum,  charlie guevara

      From: Parker Gambino <parkergambino@...>
      To: Charles Guevara <icecilliate123@...>
      Sent: Monday, October 8, 2012 8:11 PM
      Subject: Re: [beemonitoring] please comment on my european hornet neighbors
      Charlie,   Understanding social wasp feeding behavior, including the aspects of predation that you view as favorable ecological services, might best be understood in the context of the annual colony cycle and the nutritional needs of various colony members.  The need for protein (as supplied by prey as well as scavenging on meat) is mostly for the development of larvae in the nest.  Adult foragers require little, if any, protein for themselves, as they are no longer growing or developing.  On the other tarsus, they need carbohydrates as an energy source to keep themselves going.  There may be some small amount of protein in fruits such as apples, and perhaps some of this can be passed on to the larvae, but the main attraction here is the carbohydrates, especially sugars that they can harvest.  Likewise for the tree sap that they imbibe.  At this time of year, the population of hungry (or any) larvae in the nest is decreasing, so overall, foragers are less "driven" to collect protein.  Easy carbohydrate sources like apples are not going to distract foragers from preying on other insects; you are not likely to benefit from their predation services in October no matter what you do to encourage or discourage them.   Of course, this is a simplified version of a complex system; there are numerous embellishments that complicate the picture.  Here are two:   (1) ovipositing (and essentially non-foraging) adults, which may or may not be the queen, still require protein in the diet to produce eggs;   (2) the behaviors of adult colony members that contribute to colony cohesion are regulated to some extent by queen pheromones; towards the end of the colony cycle, her influence is weakened (or nil if she has died), and worker behavior becomes more erratic. Indeed, after colony decline has reached a certain point, workers are doomed to live out the duration of their lives without being able to contribution to the overall good of the colony, with the possible exception of hanging around the nest and being ornery for the protection of their non-worker reproductive siblings who will pass forward genes for the next year's population. Parker
      On Mon, Oct 8, 2012 at 8:58 AM, Charles Guevara <icecilliate123@...> wrote:
         Ooops..I missed my main question:  As long as I have apple trees bearing easy food, the pesky huge wasps are not going to provide 'the ecological service' of preying on my homes grasshoppers and flies...am I correct in this assesment?  all the best, charlie guevara .

      From: Charles Guevara <icecilliate123@...>
      To: "beemonitoring@yahoogroups.com" <beemonitoring@yahoogroups.com>
      Sent: Monday, October 8, 2012 12:43 AM
      Subject: [beemonitoring] please comment on my european hornet neighbors [2 Attachments]
      [Attachment(s) from Charles Guevara included below]
        Hi all, An excellent online resource: North Carolina State U., Dept of Entomology, North Carolina Cooperative Extension informs me that my pesky visitors ( to my hobbyist orchard of twenty or more apple trees) are indeed: Vespa crabra/ European hornets.
          My concentration of apple trees are 'free food source' less difficult than predation on large insects ( My opinion)..  So my sense is any (these huge wasps are scarey when you must 'Z-track' cut the meadow grass around the apple trees, or prune the apple trees, or simply walk with your dogs in the meadow about the orchard)..so my sense is..these huge wasps are only feeding/gnawing on my apple trees, and on the apples.  I doubt they ( the european wasps) are offering me the ecologic 'service' of preying on my grasshoppers, or flies, or yellow jackets..from close observation..these huge wasps and yellow jackets alike both feed on apples and tree sap the huge wasps gnaw to start a flow of..sort of like the classic painting: 'a peaceible kingdom'  where all..predator and prey drink at the water source together! 
        If I dropped all my apple trees...maybee..just maybee they would: 'feed on large insects such as grasshoppers and flies..etc.'.
         My question, my lament is: with stewardship of an area..by selecting for plantings which native or introduced or invassive wasps relish...is it not a given that these wasps other noted 'ecological services' ( such as preying on grasshoppers or flies)..these other categories of feeding are manifested by the huge and hungry wasps?
         I am not a grower, we are in our third growing season on this property from a downstate urban home, we are very 'live and let live/native biodiversity steward goaled'... but this issue of huge wasps and our mixed use of the land has forced a collision regarding these huge wasps.
        If I have a mixed use meadow..do I cull these huge wasps?  Have I transgressed on a regional greater good by my 'hobby orchard'?  Do we recalibrate 'introduced wasps species' as 'politically correct: invassive species'?  thanks for any comments, charlie guevara, fingerlakes/NY
      Attachment(s) from Charles Guevara
      2 of 2 Photo(s)
    Your message has been successfully submitted and would be delivered to recipients shortly.