<< Chapter < Page Chapter >> Page >

Honeybees prefer UV-blue and blue light, which they associate with high nectar. Green receptors are primarily used for the detection of motion, which is particularly helpful when bees are around or upon leaves. Briscoe and Chittka, 2001.

So it has been established that flowers look even more delectable to honeybees with an Australian crab spider sitting on top. But as aforementioned, Australian crab spiders cannot simply guess which flower is most attractive to a bee if they wish to have the most hunting success. They need to anticipate honeybee desires. This adds a twist to this predator/prey dynamic. Non-random selection of flowers is an evolved trait; however, just as Australian crab spiders are evolving to become better predators by anticipating honeybee preferences, honeybees are becoming smarter prey, learning to avoid crab spiders (Heiling and Herberstein, 2004) as described in the “Predator and Prey Coevolution” insert on the next page.

Predator and Prey Coevolution

Australian crab spiders ambush the hymenopteran prey available to them on their continent, including native honeybees to Australia and an introduced “naive” European honeybee species. In a study performed by A. M. Heiling and M. E. Herberstein, native and naive honeybees were watched as they approached flowers with or without spiders. While both species were attracted to the flower with spiders occupying a petal, only the naive bees frequently landed on these flowers. The native species has coevolved with the Australian crab spiders and therefore has learned to avoid landing on spider-occupied plants.

The results of this study indicate that native pollinators, the Australian bees, currently have the upper hand in the coevolutionary arms race. The authors of the paper expect that the crab spiders will counter this advantage by either reducing conspicuousness or exploiting a different sensory modality to attract native prey. (Heiling and Herberstein, 2004)

Australian native bee .

Photo credit: Louise Docker

Apis mellifera. Photo credit: Scott Bauer, USDA/ARS

The aforementioned studies that confirmed that Australian crab spiders use olfactory signals, visual cues, and UV-contrast imply that spiders make a choice about where they want to sit. The ability to process these signals, especially those being sent by floral species to their pollinators, is an evolved exploitation. But beyond intercepting signals meant for their prey, Australian crab spiders can manipulate themselves in a way that makes them even more adept at trapping their meals.

Thomisus spectabilis have the ability to change their body color from white to yellow over the course of several days. Incredibly, these spiders choose what color they want their bodies to be depending on the color of the flower on which they are sitting! This implies that they have knowledge of their own body color and are able to discern the colors of their surroundings. Australian crab spiders use their body and the UV-contrast it provides in comparison to the petal on which it is sitting to send a signal to a receiver, the honeybee. Therefore, in changing their body color in relation to the flower, they are using a behavioral means to exploit the signal for their greatest hunting success.

Questions & Answers

do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
what is system testing
what is the application of nanotechnology?
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
anybody can imagine what will be happen after 100 years from now in nano tech world
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Got questions? Join the online conversation and get instant answers!
QuizOver.com Reply

Get the best Algebra and trigonometry course in your pocket!

Source:  OpenStax, Mockingbird tales: readings in animal behavior. OpenStax CNX. Jan 12, 2011 Download for free at http://cnx.org/content/col11211/1.5
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Mockingbird tales: readings in animal behavior' conversation and receive update notifications?