Navigation Links
For bees and flowers, tongue size matters
Date:7/15/2014

For bees and the flowers they pollinate, a compatible tongue length is essential to a successful relationship. Some bees and plants are very closely matched, with bee tongue sized to the flower depth. Other bee species are generalists, flitting among flower species to drink nectar and collect pollen from a diverse variety of plants. Data on tongue lengths can help ecologists understand and predict the behavior, resilience and invasiveness of bee populations.

But bee tongues are hard to measure. The scarcity of reliable lingual datasets has held back research, so Ignasi Bartomeus of the Estacin Biolgica de Doana (EBD-CSIC) in Sevilla, Spain, and his colleagues at Rutgers University (New Brunswick, N.J.) looked for a more easily measured proxy, like body size. Bee tongues are proportional to body size, but modulated by family adaptationsbee families typically have characteristic tongue shapes and proportions. The research group came up with an equation to predict tongue length from a combination of body size and taxonomic relationships.

Bartomeus will explain the equation and the usefulness of tongue length data for ecology at the 99th Annual Meeting of the Ecological Society of America in Sacramento, Cal., this August during the "Pollination I" oral session on Thursday afternoon, August 14. The meeting lasts five days and draws roughly 3,500 environmental scientists from around the world.

A bee collects pollen on its body as it laps sugar-rich nectar from within the cupped interior of the flower's petals, and carries the flower's genetic heritage away with it to fertilize the next flower of the same species that it visits. In most species, the bee's tongue is guarded by a long, two-sided, beak of a sheath, which folds under the body when the bee flies.

Perched at the mouth of a flower, the bee unfolds the beaky maxilla and extends its tongue into the corolla of the flower, dipping and retracting it to lap up the nectar. If its tongue is too short to reach the nectar, the bee has a problem. Long flowers like honeysuckle or columbine are too deep for short-tongued bees.

But longer isn't always better; long tongues are harder to wrangle into short flowers. Long-tongued bees are often specialists, favoring a few deep-throated flower species. In the bumblebee-sparse southern tip of Argentina, for example, Bombus dahlbomii, the native long-tongued giant of Patagonia, has lost ground to a new bumblebee from Europe, the short-tongued generalist Bombus terrestris, imported to help pollinate tomatoes. Although disease has likely played a role in the retreat of the long-tongued giant, B. terrestris also appears to be out-competing an earlier European immigrant, the long-tongued Bombus ruderatus.

Because specialists depend on just a few flowers, they can be more vulnerable to change. Tongue length can thus be intertwined with a species' risk of extinction, as well as specialization.


'/>"/>

Contact: Liza Lester
llester@esa.org
202-833-8773 x205
Ecological Society of America
Source:Eurekalert

Related biology news :

1. Complex neural circuitry keeps you from biting your tongue
2. Anticipation and navigation: Do your legs know what your tongue is doing?
3. Tongue analysis software uses ancient Chinese medicine to warn of disease
4. Nitrogen pollution, climate and land use: Why what we eat matters
5. Sex matters for microbes
6. Reproductive Health Matters announces publication of its latest themed issue: New development paradigm
7. Protein quality: It matters
8. Family matters: Evolutionary relationships among species of magic mushrooms shed light on fungi
9. Cat and mouse: A single gene matters
10. Age matters to Antarctic clams
11. How belly fat differs from thigh fat -- and why it matters
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/3/2016)... , June 3, 2016 ... von Nepal hat ... Lieferung hochsicherer geprägter Kennzeichen, einschließlich Personalisierung, Registrierung ... in der Produktion und Implementierung von Identitätsmanagementlösungen. ... Ausschreibung im Januar teilgenommen, aber Decatur wurde ...
(Date:5/24/2016)... , May 24, 2016 Ampronix facilitates superior patient care by providing ...  3D medical LCD display is the latest premium product recently added to the range ... ... ... Sony 3d Imaging- LCD Medical Display- Ampronix News ...
(Date:5/3/2016)... Lithuania , May 3, 2016  Neurotechnology, ... released the MegaMatcher Automated Biometric Identification System ... of large-scale multi-biometric projects. MegaMatcher ABIS can process ... accuracy using any combination of fingerprint, face or ... MegaMatcher SDK and MegaMatcher Accelerator ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... ... 2016 , ... Charm Sciences, Inc. is pleased to announce ... Research Institute approval 061601. , “This is another AOAC-RI approval of the Peel ... President of Regulatory and Industrial Affairs. “The Peel Plate methods perform comparably to ...
(Date:6/23/2016)... ... 23, 2016 , ... STACS DNA Inc., the sample tracking software company, today ... Laboratory, has joined STACS DNA as a Field Application Specialist. , “I am ... and COO of STACS DNA. “In further expanding our capacity as a scientific integrator, ...
(Date:6/23/2016)... NEW YORK , June 23, 2016 ... the trading session at 4,833.32, down 0.22%; the Dow Jones ... the S&P 500 closed at 2,085.45, down 0.17%. Stock-Callers.com has ... INFI ), Nektar Therapeutics (NASDAQ: NKTR ... BIND Therapeutics Inc. (NASDAQ: BIND ). Learn more ...
(Date:6/23/2016)... , June 23, 2016 ... market research report to its pharmaceuticals section with ... product details and much more. Complete ... across 151 pages, profiling 15 companies and supported ... at http://www.reportsnreports.com/reports/601420-global-cell-culture-media-industry-2016-market-research-report.html . The ...
Breaking Biology Technology: