Effect of light intensity on the foraging and growth of Atlantic cod larvae: interpopulation difference?
Studies have been conducted on the geographic variation of growth and survival among fish populations but little work has been done in this regard on the early larval stages of marine fish. We conducted experiments on larvae from 2 separate populations of Atlantic cod to determine their response to...
Main Authors: | , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Inter-Research
1998
|
Subjects: | |
Online Access: | https://research.library.mun.ca/552/ https://research.library.mun.ca/552/1/effect_light_intensity.pdf https://research.library.mun.ca/552/3/effect_light_intensity.pdf http://www.int-res.com/abstracts/meps/v167/p207-214/ |
id |
ftmemorialuniv:oai:research.library.mun.ca:552 |
---|---|
record_format |
openpolar |
spelling |
ftmemorialuniv:oai:research.library.mun.ca:552 2024-09-09T19:29:40+00:00 Effect of light intensity on the foraging and growth of Atlantic cod larvae: interpopulation difference? Puvanendran, Velmurugu Brown, Joseph A. 1998-06-18 application/pdf https://research.library.mun.ca/552/ https://research.library.mun.ca/552/1/effect_light_intensity.pdf https://research.library.mun.ca/552/3/effect_light_intensity.pdf http://www.int-res.com/abstracts/meps/v167/p207-214/ en eng Inter-Research https://research.library.mun.ca/552/1/effect_light_intensity.pdf https://research.library.mun.ca/552/3/effect_light_intensity.pdf Puvanendran, Velmurugu <https://research.library.mun.ca/view/creator_az/Puvanendran=3AVelmurugu=3A=3A.html> and Brown, Joseph A. <https://research.library.mun.ca/view/creator_az/Brown=3AJoseph_A=2E=3A=3A.html> (1998) Effect of light intensity on the foraging and growth of Atlantic cod larvae: interpopulation difference? Marine Ecology Progress Series, 167. pp. 207-214. ISSN 1616-1599 cc_by_nc QH301 Biology Article PeerReviewed 1998 ftmemorialuniv 2024-07-10T03:16:00Z Studies have been conducted on the geographic variation of growth and survival among fish populations but little work has been done in this regard on the early larval stages of marine fish. We conducted experiments on larvae from 2 separate populations of Atlantic cod to determine their response to light. Preliminary experiments conducted in our laboratory suggested that the light intensity under which larvae were reared may affect the growth performance of Atlantic cod larvae from the Scotian Shelf (SS) and Northeast Grand Banks (NF) differently. We conducted experiments to test the hypothesis that light intensity differentially affects larvae from these 2 geographically distinct populations. Cod larvae from each population were reared under low (0.19 μE m-2 or 8.5 lx) and high (12.92 μE m-2 or 680 lx) light intensities. Results showed that NF larvae foraged, grew and survived better under high light than low light, while the SS larvae performed better under low light conditions. In nature, the population of SS cod we used spawn during late fall/early winter while NF cod spawn in spring/ summer. Thus, SS larvae likely experience low winter light levels and NF larvae high summer light levels during first feeding. These results support our hypothesis and suggest that cod larvae from different latitudes are adapted to local environmental conditions. Article in Journal/Newspaper atlantic cod Memorial University of Newfoundland: Research Repository |
institution |
Open Polar |
collection |
Memorial University of Newfoundland: Research Repository |
op_collection_id |
ftmemorialuniv |
language |
English |
topic |
QH301 Biology |
spellingShingle |
QH301 Biology Puvanendran, Velmurugu Brown, Joseph A. Effect of light intensity on the foraging and growth of Atlantic cod larvae: interpopulation difference? |
topic_facet |
QH301 Biology |
description |
Studies have been conducted on the geographic variation of growth and survival among fish populations but little work has been done in this regard on the early larval stages of marine fish. We conducted experiments on larvae from 2 separate populations of Atlantic cod to determine their response to light. Preliminary experiments conducted in our laboratory suggested that the light intensity under which larvae were reared may affect the growth performance of Atlantic cod larvae from the Scotian Shelf (SS) and Northeast Grand Banks (NF) differently. We conducted experiments to test the hypothesis that light intensity differentially affects larvae from these 2 geographically distinct populations. Cod larvae from each population were reared under low (0.19 μE m-2 or 8.5 lx) and high (12.92 μE m-2 or 680 lx) light intensities. Results showed that NF larvae foraged, grew and survived better under high light than low light, while the SS larvae performed better under low light conditions. In nature, the population of SS cod we used spawn during late fall/early winter while NF cod spawn in spring/ summer. Thus, SS larvae likely experience low winter light levels and NF larvae high summer light levels during first feeding. These results support our hypothesis and suggest that cod larvae from different latitudes are adapted to local environmental conditions. |
format |
Article in Journal/Newspaper |
author |
Puvanendran, Velmurugu Brown, Joseph A. |
author_facet |
Puvanendran, Velmurugu Brown, Joseph A. |
author_sort |
Puvanendran, Velmurugu |
title |
Effect of light intensity on the foraging and growth of Atlantic cod larvae: interpopulation difference? |
title_short |
Effect of light intensity on the foraging and growth of Atlantic cod larvae: interpopulation difference? |
title_full |
Effect of light intensity on the foraging and growth of Atlantic cod larvae: interpopulation difference? |
title_fullStr |
Effect of light intensity on the foraging and growth of Atlantic cod larvae: interpopulation difference? |
title_full_unstemmed |
Effect of light intensity on the foraging and growth of Atlantic cod larvae: interpopulation difference? |
title_sort |
effect of light intensity on the foraging and growth of atlantic cod larvae: interpopulation difference? |
publisher |
Inter-Research |
publishDate |
1998 |
url |
https://research.library.mun.ca/552/ https://research.library.mun.ca/552/1/effect_light_intensity.pdf https://research.library.mun.ca/552/3/effect_light_intensity.pdf http://www.int-res.com/abstracts/meps/v167/p207-214/ |
genre |
atlantic cod |
genre_facet |
atlantic cod |
op_relation |
https://research.library.mun.ca/552/1/effect_light_intensity.pdf https://research.library.mun.ca/552/3/effect_light_intensity.pdf Puvanendran, Velmurugu <https://research.library.mun.ca/view/creator_az/Puvanendran=3AVelmurugu=3A=3A.html> and Brown, Joseph A. <https://research.library.mun.ca/view/creator_az/Brown=3AJoseph_A=2E=3A=3A.html> (1998) Effect of light intensity on the foraging and growth of Atlantic cod larvae: interpopulation difference? Marine Ecology Progress Series, 167. pp. 207-214. ISSN 1616-1599 |
op_rights |
cc_by_nc |
_version_ |
1809898793293840384 |