Gill development in sympatric morphs of Arctic charr from Loch Awe, Scotland: A hidden physiological cost of macrobenthos feeding?
Abstract The development of the respiratory surfaces was compared in two sympatric, lacustrine morphs of Arctic charr. A macrobenthic invertebrate feeding specialist, that forages in the littoral benthic zone, had a gill cavity that was 54% larger in volume and had 31% greater respiratory surface ar...
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crwiley:10.1111/eff.12388 2024-09-15T17:52:23+00:00 Gill development in sympatric morphs of Arctic charr from Loch Awe, Scotland: A hidden physiological cost of macrobenthos feeding? Jenjan, Hussain B.B. Garduño‐Paz, Monica Huntingford, Felicity A. Adams, Colin E. Mexican Council for Science & Technology University of Benghaazi Libyan embassy - UK Mexican Council for Science and Technology (CONACYT) 2017 http://dx.doi.org/10.1111/eff.12388 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Feff.12388 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12388 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology of Freshwater Fish volume 27, issue 3, page 732-736 ISSN 0906-6691 1600-0633 journal-article 2017 crwiley https://doi.org/10.1111/eff.12388 2024-07-02T04:09:47Z Abstract The development of the respiratory surfaces was compared in two sympatric, lacustrine morphs of Arctic charr. A macrobenthic invertebrate feeding specialist, that forages in the littoral benthic zone, had a gill cavity that was 54% larger in volume and had 31% greater respiratory surface area than that of a zooplankton feeding morph that forages in the pelagic zone. The large respiratory surface area in the benthic‐feeding form was the result of longer gill arches, more and longer gill filaments and more numerous secondary lamellae. The difference in gill cavity volume and filament length appears to be the result of a larger head, but not body size, in the benthic‐feeding form. This suggests that differences in these characteristics may have arisen as a by‐product of the expression of larger head size commonly described in macrobenthos foraging specialist charr. The other differences, particularly the more numerous secondary lamellae and the length of the gill arches, were not the result of head size differences between morphs, and thus, these are most likely an adaptation to greater respiratory requirements. Benthic‐feeding fish may have a greater respiratory capacity to allow them to forage in areas with lower levels of dissolved oxygen and/or engage in a more active lifestyle compared to the pelagic‐feeding form. In any event, the strikingly larger respiratory surface is likely to impose an additional ionoregulatory stress on the benthic‐feeding and thus may represent a hidden physiological cost of specialisation for foraging on benthic prey. Article in Journal/Newspaper Arctic charr Zooplankton Wiley Online Library Ecology of Freshwater Fish 27 3 732 736 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The development of the respiratory surfaces was compared in two sympatric, lacustrine morphs of Arctic charr. A macrobenthic invertebrate feeding specialist, that forages in the littoral benthic zone, had a gill cavity that was 54% larger in volume and had 31% greater respiratory surface area than that of a zooplankton feeding morph that forages in the pelagic zone. The large respiratory surface area in the benthic‐feeding form was the result of longer gill arches, more and longer gill filaments and more numerous secondary lamellae. The difference in gill cavity volume and filament length appears to be the result of a larger head, but not body size, in the benthic‐feeding form. This suggests that differences in these characteristics may have arisen as a by‐product of the expression of larger head size commonly described in macrobenthos foraging specialist charr. The other differences, particularly the more numerous secondary lamellae and the length of the gill arches, were not the result of head size differences between morphs, and thus, these are most likely an adaptation to greater respiratory requirements. Benthic‐feeding fish may have a greater respiratory capacity to allow them to forage in areas with lower levels of dissolved oxygen and/or engage in a more active lifestyle compared to the pelagic‐feeding form. In any event, the strikingly larger respiratory surface is likely to impose an additional ionoregulatory stress on the benthic‐feeding and thus may represent a hidden physiological cost of specialisation for foraging on benthic prey. |
author2 |
Mexican Council for Science & Technology University of Benghaazi Libyan embassy - UK Mexican Council for Science and Technology (CONACYT) |
format |
Article in Journal/Newspaper |
author |
Jenjan, Hussain B.B. Garduño‐Paz, Monica Huntingford, Felicity A. Adams, Colin E. |
spellingShingle |
Jenjan, Hussain B.B. Garduño‐Paz, Monica Huntingford, Felicity A. Adams, Colin E. Gill development in sympatric morphs of Arctic charr from Loch Awe, Scotland: A hidden physiological cost of macrobenthos feeding? |
author_facet |
Jenjan, Hussain B.B. Garduño‐Paz, Monica Huntingford, Felicity A. Adams, Colin E. |
author_sort |
Jenjan, Hussain B.B. |
title |
Gill development in sympatric morphs of Arctic charr from Loch Awe, Scotland: A hidden physiological cost of macrobenthos feeding? |
title_short |
Gill development in sympatric morphs of Arctic charr from Loch Awe, Scotland: A hidden physiological cost of macrobenthos feeding? |
title_full |
Gill development in sympatric morphs of Arctic charr from Loch Awe, Scotland: A hidden physiological cost of macrobenthos feeding? |
title_fullStr |
Gill development in sympatric morphs of Arctic charr from Loch Awe, Scotland: A hidden physiological cost of macrobenthos feeding? |
title_full_unstemmed |
Gill development in sympatric morphs of Arctic charr from Loch Awe, Scotland: A hidden physiological cost of macrobenthos feeding? |
title_sort |
gill development in sympatric morphs of arctic charr from loch awe, scotland: a hidden physiological cost of macrobenthos feeding? |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1111/eff.12388 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Feff.12388 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12388 |
genre |
Arctic charr Zooplankton |
genre_facet |
Arctic charr Zooplankton |
op_source |
Ecology of Freshwater Fish volume 27, issue 3, page 732-736 ISSN 0906-6691 1600-0633 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/eff.12388 |
container_title |
Ecology of Freshwater Fish |
container_volume |
27 |
container_issue |
3 |
container_start_page |
732 |
op_container_end_page |
736 |
_version_ |
1810294432139837440 |