Navigation Links
Giant squids' giant eyes: The better to see hungry whales with
Date:3/17/2012

It's no surprise that giant and colossal squid are big, but it's their eyes that are the real standouts when it comes to size, with diameters measuring two or three times that of any other animal. Now, researchers reporting online on March 15 in Current Biology, a Cell Press publication, have used complex computations to explain those massive peepers. Giant squids' 10-inch eyes allow them to see very large and hungry sperm whales from a distance in the pitch darkness of their deep-sea home.

According to the researchers' calculations, animals living underwater would have no use for such large eyes if the goal were to see an average object, such as prey smaller than themselves. That's why even the eyes of large whales aren't much more than 3.5 inches across.

"For seeing in dim light, a large eye is better than a small eye, simply because it picks up more light," said Dan-Eric Nilsson of Lund University. "But for animals that live in the sea or in lakes, the optical properties of water will severely restrict how far away things can be seen.

"Through complex computations we have found that for animals living in water, it does not pay to make eyes much bigger than an orange. Making eyes larger than that will only marginally improve vision, but eyes are expensive to build and maintain."

For Nilsson's team, that begged the question of why giant squid bother with their giant eyes. Using a mathematical model of underwater vision, they tested the benefits of very large eyes for a broad range of tasks under various light conditions. Those efforts showed that very large eyes aren't much better than smaller ones unless one wants to see something that is itself very big, like a whale.

Giant squid may also be unique in that they are powerful enough to escape a sperm whale once they've spotted one, Nilsson says. But how can giant squid see a sperm whale at depths beyond daylight's reach?

"The answer is biolumines
'/>"/>

Contact: Elisabeth (Lisa) Lyons
elyons@cell.com
617-386-2121
Cell Press
Source:Eurekalert  

Page: 1 2

Related biology news :

1. 1,000 tags reveal mysteries of giant bluefin tuna
2. Conservation International gets support from Dreamworks Animation to protect giant pandas
3. Discovery of giant roaming deep sea protist provides new perspective on animal evolution
4. Doubling a gene in corn results in giant biomass
5. Tall tale of giant stingray circles the globe
6. Doubling a gene in corn results in giant biomass
7. Scientists rebuild giant moa using ancient DNA
8. Report documents the risks of giant invasive snakes in the US
9. Canopy giants and miniature fungi among 250 new species discovered in Kews 250th anniversary year
10. Microorganism may provide key to combating giant salvinia throughout Louisiana
11. Giant panda genome reveals new insights into the bears bamboo diet
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Giant squids' giant eyes: The better to see hungry whales with
(Date:3/26/2015)... 26, 2015 The Granite Club, ... and athletic club, today announced it has implemented a ... of movement for members and staff, while restricting access ... process, we selected FST,s IMID Access system because it ... our members and staff, in addition to unparalleled security," ...
(Date:3/24/2015)... 24, 2015 Research and Markets ( ... "Global Iris Recognition Market 2015-2019" report to their ... Recognition market to grow at a CAGR of 23.5 ... covers the present scenario and the growth prospects of ... To calculate the market size, the report considers the ...
(Date:3/24/2015)... 24, 2015 Research and Markets ( http://www.researchandmarkets.com/research/kvdtcw/face_and_voice ) ... - Global Strategic Business Report" report to their offering. ... Biometrics in US$ Thousands by the following Segments: Face Biometrics, and ... Canada , Japan , ... Middle East & Africa , and ...
Breaking Biology News(10 mins):Granite Club First Private Club in North America to Implement FST Biometrics Secure Access Solution, as Part of Multi-million Dollar Expansion 2Global Iris Recognition Market 2015-2019 with 3M Cogent, Bioenable Technologies, Cross Match Technology, Iris ID Systems & Safran Dominating 2Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 2Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 3Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 4Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 5Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 6
... that the penicillin-producing mould fungus Penicillium chrysogenum ... led by Prof. Dr. Ulrich Kck and Julia Bhm ... the Ruhr-Universitt has now shown for the first time ... two "genders". Through sexual reproduction of P. chrysogenum ...
... future shaped by climate change, only the strong or ... Proceedings of the National Academy of Sciences opens a ... withstand unusually high temperatures and may hold a key to ... can find populations most likely to resist climate change and ...
... announce the publication of a complete, accessible reference ... with endocrine disease. Clinical Endocrinology ... relevant information on managing the patient with endocrine ... each chapter takes the same structure to aid ...
Cached Biology News:Unlike we thought for 100 years: Molds are able to reproduce sexually 2Heat-resistant corals provide clues to climate change survival 2
(Date:3/27/2015)... (PRWEB) March 27, 2015 Earlier this ... the promotion of hair regrowth in adult men and ... I-II or Norwood Hamilton classifications of IIa-V and Fitzpatrick ... industry plagued by products that over-promise and under-deliver, FDA ... renewing faith and confidence among more than 80 million ...
(Date:3/27/2015)... The consumption of compound fertilizers (NPK) fertilizers ... high prices in 2008. However, the situation has stabilised ... gaining momentum now. , To date, the world annual ... thousand tonnes. No considerable growth was registered in the ... during 2012-2013, registering 11% growth as against the period ...
(Date:3/27/2015)... , 27. März 2015  Peter Walter ... Biomedical Science für seine bahnbrechende Arbeit ausgewählt, ... Zellkompartimenten transportiert werden, sowie für die Entschlüsselung ... Reaktion auf Stress nutzen, der mit der ... ist Professor für Biochemie an der University ...
(Date:3/27/2015)... , March 27, 2015  Neogen Corporation (NASDAQ: ... has adopted a prearranged trading plan in accordance with ... , Chairman and CEO of Neogen Corporation, is a ... Neogen Corporation common stock. Herbert does not ... was appropriate. The filing is only for a portion ...
Breaking Biology Technology:Dr. Robert Leonard Applauds FDA Clearance of Capillus272Pro™ Hair Loss Laser Cap 2World NPK Fertilizers Market Keeps On Gaining Momentum, According to BAC Reports Study Available at MarketPublishers.com 2World NPK Fertilizers Market Keeps On Gaining Momentum, According to BAC Reports Study Available at MarketPublishers.com 3Deutschstämmiger Zellbiologe Peter Walter gewinnt den Vilcek Prize in Biomedical Science 2015 2Deutschstämmiger Zellbiologe Peter Walter gewinnt den Vilcek Prize in Biomedical Science 2015 3Deutschstämmiger Zellbiologe Peter Walter gewinnt den Vilcek Prize in Biomedical Science 2015 4Neogen CEO adopts 10b5-1 Trading Plan 2
... May 24 Repligen Corporation (Nasdaq: RGEN ) ... the Food and Drug Administration (FDA) has granted orphan drug ... for the treatment of Friedreich,s ataxia.  Orphan drug designation qualifies ... the United States if the company is the first ...
... Ohio , May 24, 2010 Simbionix USA Corporation,the world,s ... the healthcare industry, is launching,two new hands-on training systems- the Lap Nepherctomy ... first time at,the AUA annual meeting in San Francisco next ... ...
... ( RBC Life Sciences : OTC Bulletin Board: RBCL) — RBC ... management products, announced today it has promoted Director of Sales Kevin Young ... , , , ... at a time when RBC Life Sciences is in the midst of a ...
Cached Biology Technology:Repligen Receives Orphan Drug Designation from the FDA for RG2833 for Friedreich's Ataxia 2Repligen Receives Orphan Drug Designation from the FDA for RG2833 for Friedreich's Ataxia 3Repligen Receives Orphan Drug Designation from the FDA for RG2833 for Friedreich's Ataxia 4Simbionix to Reveal Two new Products at the Upcoming American Urology Association (AUA) Annual Meeting 2Simbionix to Reveal Two new Products at the Upcoming American Urology Association (AUA) Annual Meeting 3RBC Life Sciences Fills Newly Created Vice President of Sales and Marketing Position With Industry Veteran 2
... This kit is designed for easy ... The protocol allows for successful transformation simply ... kit reagents with cultured yeast cells. No ... washing, are required. The kit is particularly ...
... II Microplate Handler is a high-capacity, ... integrating BioTeks washers, readers and liquid ... capacity, ultimate flexibility and intuitive and ... capacity to single devices or linking ...
... easier. It offers a wide array of features for ... *Instruments supported: Control ... PR, SR, PG-S, PG, SG, AT, MT, UMT, AB-S, ... User guidance on the balance display ...
XPLAC (S-17)...
Biology Products: