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:10/15/2014)... Oct. 15, 2014 Sandata Technologies, LLC, ... and community-based care, today announced it released a ... Santrax® Electronic Visit Verification™ Solution (EVV™)  for Quality ... home health company founded in 1996 and has ... The study details the challenges ...
(Date:10/15/2014)... rapidly and to an unexpected extent. The outbreak does ... the virus shows a new disease dynamic in regions, ... reason, the German National Academy of Sciences Leopoldina, acatech ... the Union of the German Academies of Sciences and ... today. , In the statement the academies call for ...
(Date:10/15/2014)... VILNIUS, Lithuania , Oct. 15, 2014 /PRNewswire/ ... identification technologies, today announced the availability of the ... . VeriLook Surveillance 3.0 provides real-time biometric face ... multiple high-resolution digital surveillance cameras. The new version ... detects and differentiates people from objects while they ...
Breaking Biology News(10 mins):Sandata Announces Case Study with Quality Care Services, Inc. 2Academies call for consequences from the Ebola virus epidemic 2Academies call for consequences from the Ebola virus epidemic 3Academies call for consequences from the Ebola virus epidemic 4Academies call for consequences from the Ebola virus epidemic 5VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 2VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 3
... with cheap processing fluidsIn an important advance toward ... at Rice University have developed a new method ... dot synthesis with cheaper oils that are commonplace ... was conducted under the auspices of the Center ...
... insight into genetic basis of human diseaseHigh-throughput sequencing of ... which can give clues to the genetic underpinning of ... information from the individual's two chromosomes. Yet many ... individuals' DNA at the level of each chromosome -- ...
... quick to caution about the many things that could ... to contain a Southeast Asian outbreak of avian influenza ... a vaccine. , Using a computer model to simulate ... scientists have shown how a combination of strategies, including ...
Cached Biology News:Method slashes quantum dot costs by 80 percent 2Method slashes quantum dot costs by 80 percent 3U-M scientists say fused genes trigger the development of prostate cancer 2U-M scientists say fused genes trigger the development of prostate cancer 3U-M scientists say fused genes trigger the development of prostate cancer 4Preventing a pandemic: Study suggests strategies for containing a flu outbreak 2Preventing a pandemic: Study suggests strategies for containing a flu outbreak 3
(Date:10/18/2014)... The Asia-Pacific hardware encryption display market ... with analysis and forecast of revenue. This market was ... reach $51,362.6 million by 2018, at a CAGR of ... TOC of the Asia-Pacific hardware encryption market report, to ... also provides a glimpse of the segmentation of the ...
(Date:10/18/2014)... (PRWEB) October 18, 2014 The Asian Electronic ... market in Asian with analysis and forecast of revenue. The ... to grow to $2,328.0 million by 2018, at a CAGR ... TOC of the Asian Electronic Medical Record (EMR) market, to ... provides a glimpse of the segmentation of the market in ...
(Date:10/18/2014)... According to a new market research ... - Global Trends & Forecasts up till 2017”, hydraulic ... 2011. This value is expected to increase from $40 ... 10% CAGR during the same period. North America is ... in terms of hydraulic horse power supplied by the ...
(Date:10/18/2014)... October 18, 2014 The “Global ... Holter Monitor), by End-user (Hospitals, Home/Ambulatory, Research Center, ... 3-6, 12) -Global Forecast to 2020” provides a ... opportunities, current market trends, and strategies impacting the ... and forecasts of the revenue and share analysis. ...
Breaking Biology Technology:The Asia-Pacific hardware encryption display market is expected to reach $51,362.6 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific hardware encryption display market is expected to reach $51,362.6 million by 2018 - New Report by MicroMarket Monitor 3The Asian Electronic Medical Record (EMR) market is estimated to grow to $2,328.0 million by 2018 - New Report by MicroMarket Monitor 2The Asian Electronic Medical Record (EMR) market is estimated to grow to $2,328.0 million by 2018 - New Report by MicroMarket Monitor 3The Asian Electronic Medical Record (EMR) market is estimated to grow to $2,328.0 million by 2018 - New Report by MicroMarket Monitor 4The Asian Electronic Medical Record (EMR) market is estimated to grow to $2,328.0 million by 2018 - New Report by MicroMarket Monitor 5Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 2Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 3Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 4The Electrocardiograph (ECG) Market Is Expected to Reach $5,435 Million By 2020 - New Research Report by MarketsandMarkets 2The Electrocardiograph (ECG) Market Is Expected to Reach $5,435 Million By 2020 - New Research Report by MarketsandMarkets 3The Electrocardiograph (ECG) Market Is Expected to Reach $5,435 Million By 2020 - New Research Report by MarketsandMarkets 4The Electrocardiograph (ECG) Market Is Expected to Reach $5,435 Million By 2020 - New Research Report by MarketsandMarkets 5
... money from the Minority Business Development Fund , the ... minority-owned technology businesses in Madison. , , Gov. Jim Doyle ... will receive loans to help them expand and create jobs. ... capital to develop and market a private, anonymous software transaction ...
... a fabulous year and outperformed the NASDAQ Composite index ... large margin. The two key biotech indices, the NASDAQ and ... each. , ,The NASDAQ Biotech Index, which holds many more ... industry (larger and smaller companies), was flat for the year, ...
... and BellSouth must simply be on a mission from ... one can stop them. , ,They waited until the last week ... U.S. history. I always thought that the old Bell System ... to proving I was right by continuing what I coined the ...
Cached Biology Technology:2006: A mixed blessing for Midwest life science companies 22006: A mixed blessing for Midwest life science companies 32006: A mixed blessing for Midwest life science companies 42006: A mixed blessing for Midwest life science companies 52006: A mixed blessing for Midwest life science companies 62006: A mixed blessing for Midwest life science companies 72006: A mixed blessing for Midwest life science companies 82006: A mixed blessing for Midwest life science companies 92006: A mixed blessing for Midwest life science companies 102006: A mixed blessing for Midwest life science companies 11AT&T - BellSouth merger: Revestiture continues 2AT&T - BellSouth merger: Revestiture continues 3AT&T - BellSouth merger: Revestiture continues 4AT&T - BellSouth merger: Revestiture continues 5AT&T - BellSouth merger: Revestiture continues 6
Anti-Goat HRP-DAB Cell & Tissue Staining Kit...
... The Light Diagnostics Cytomegalovirus (CMV) pp65 Antigenemia ... qualitative identification of lower matrix protein pp65 ... Kit Components: ... One bottle containing 220 mL of buffered ...
... The CultureWell cell culture ... for preparing cultured cells for ... uses medical-grade silicone gaskets preassembled ... cell culture plates. The entire ...
nuclear cap binding protein subunit 1, 80kDa, mRNA...
Biology Products: