Heterochrony in skeletal development and body size in progeny of two morphs of Arctic charr from Thingvallavatn, Iceland
Planktivorus Arctic charr had larger eggs than small benthivorous charr and the progeny of the former were longer (total length) at days 125, 145 and 159 after fertilization. Size differences remained significant after the removal of egg size effect on embryo size. Size of hybrid progeny tended to b...
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crwiley:10.1111/j.1095-8649.1999.tb01054.x 2024-09-15T17:52:22+00:00 Heterochrony in skeletal development and body size in progeny of two morphs of Arctic charr from Thingvallavatn, Iceland Eiríksson, G. M. Skúlason, S. Snorrason, S. S. 1999 http://dx.doi.org/10.1111/j.1095-8649.1999.tb01054.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1999.tb01054.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1999.tb01054.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 55, issue sA, page 175-185 ISSN 0022-1112 1095-8649 journal-article 1999 crwiley https://doi.org/10.1111/j.1095-8649.1999.tb01054.x 2024-08-06T04:17:04Z Planktivorus Arctic charr had larger eggs than small benthivorous charr and the progeny of the former were longer (total length) at days 125, 145 and 159 after fertilization. Size differences remained significant after the removal of egg size effect on embryo size. Size of hybrid progeny tended to be similar to their maternal pure progeny group, suggesting maternal effects not directly related to yolk volume. In general, fin ray number increased faster in small benthivorous charr progeny than in planktivorous charr progeny, hybrid progeny tending to have intermediate fin ray numbers. The results indicate that morph differences in embryonic growth and skeletal development have a genetic and maternal component. Results support the hypothesis that in the period from hatching until just after first external feeding small benthivorous charr allocate more energy towards bone development, e.g. formation of fin rays, while planktivorous charr allocate more energy to body growth. The different developmental trajectories may reflect adaptations to discrete differences in habitats between the morphs. Article in Journal/Newspaper Arctic charr Iceland Wiley Online Library Journal of Fish Biology 55 sa 175 185 |
institution |
Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Planktivorus Arctic charr had larger eggs than small benthivorous charr and the progeny of the former were longer (total length) at days 125, 145 and 159 after fertilization. Size differences remained significant after the removal of egg size effect on embryo size. Size of hybrid progeny tended to be similar to their maternal pure progeny group, suggesting maternal effects not directly related to yolk volume. In general, fin ray number increased faster in small benthivorous charr progeny than in planktivorous charr progeny, hybrid progeny tending to have intermediate fin ray numbers. The results indicate that morph differences in embryonic growth and skeletal development have a genetic and maternal component. Results support the hypothesis that in the period from hatching until just after first external feeding small benthivorous charr allocate more energy towards bone development, e.g. formation of fin rays, while planktivorous charr allocate more energy to body growth. The different developmental trajectories may reflect adaptations to discrete differences in habitats between the morphs. |
format |
Article in Journal/Newspaper |
author |
Eiríksson, G. M. Skúlason, S. Snorrason, S. S. |
spellingShingle |
Eiríksson, G. M. Skúlason, S. Snorrason, S. S. Heterochrony in skeletal development and body size in progeny of two morphs of Arctic charr from Thingvallavatn, Iceland |
author_facet |
Eiríksson, G. M. Skúlason, S. Snorrason, S. S. |
author_sort |
Eiríksson, G. M. |
title |
Heterochrony in skeletal development and body size in progeny of two morphs of Arctic charr from Thingvallavatn, Iceland |
title_short |
Heterochrony in skeletal development and body size in progeny of two morphs of Arctic charr from Thingvallavatn, Iceland |
title_full |
Heterochrony in skeletal development and body size in progeny of two morphs of Arctic charr from Thingvallavatn, Iceland |
title_fullStr |
Heterochrony in skeletal development and body size in progeny of two morphs of Arctic charr from Thingvallavatn, Iceland |
title_full_unstemmed |
Heterochrony in skeletal development and body size in progeny of two morphs of Arctic charr from Thingvallavatn, Iceland |
title_sort |
heterochrony in skeletal development and body size in progeny of two morphs of arctic charr from thingvallavatn, iceland |
publisher |
Wiley |
publishDate |
1999 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1999.tb01054.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1999.tb01054.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1999.tb01054.x |
genre |
Arctic charr Iceland |
genre_facet |
Arctic charr Iceland |
op_source |
Journal of Fish Biology volume 55, issue sA, page 175-185 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1999.tb01054.x |
container_title |
Journal of Fish Biology |
container_volume |
55 |
container_issue |
sa |
container_start_page |
175 |
op_container_end_page |
185 |
_version_ |
1810294413825409024 |