Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | Springer Nature Link |
|---|---|
| Author | Kahilainen, K. K. Smura, T. Knudsen, R. Amundsen, P. A. Jokela Määttä, M. Donner, K. |
| Copyright Year | 2015 |
| Abstract | Foraging trait specialization is important for polymorphic Arctic charr and whitefish, but visual capabilities of different morphs are unexplored. Photoreceptor complements and absorbance spectra of rod visual pigments were studied by microspectrophotometry in two sympatric Arctic charr morphs and three sympatric whitefish morphs from two subarctic lakes. Four spectral classes of photoreceptor cells, rods and three types of cones, were found in all morphs of both species. Arctic charr rods had a pure A1 pigment (rhodopsin) with wavelength of maximum absorbance λ max ≈ 511–512 nm and no significant differences either between littoral and profundal morphs or sampling times (January/August). Rods of littoral and pelagic whitefish had practically pure A2 pigment (porphyropsin), whereas profundal whitefish had chromophore mixtures with A2:A1 ≈ 0.8:0.2 in June, A1 decreasing to a smaller fraction in September. λ max values of littoral and pelagic whitefish rods were similar and did not change significantly with season (539.3 ± 0.3 nm/539.3 ± 1.1 nm and 538.4 ± 0.4/539.8 ± 0.3 nm in June/September) but differed from profundal whitefish (λ max = 531.5 ± 0.8/536.7 ± 1.0 nm). Differences between Arctic charr and whitefish morphs suggest importance of local light environment determining visual pigment composition. |
| Starting Page | 223 |
| Ending Page | 237 |
| Page Count | 15 |
| File Format | |
| ISSN | 00188158 |
| Journal | Hydrobiologia |
| Volume Number | 783 |
| Issue Number | 1 |
| e-ISSN | 15735117 |
| Language | English |
| Publisher | Springer International Publishing |
| Publisher Date | 2015-12-23 |
| Publisher Place | Cham |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Adaptive radiation Ecological speciation Niche Eye Light Photoreceptors Retina Visual pigments Freshwater & Marine Ecology Ecology Zoology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Aquatic Science |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|