Rostrum morphology and feeding strategy of the baleen whale indicate that right whales and pygmy right whales became skimmers independently
Baleen whales have lost their functional teeth and begun to use their baleen plates to feed on small prey. Modern baleen whales exhibit different types of feeding strategies, such as lunging, skimming and so on. The evolution of feeding strategy in the Chaeomysticeti is an important step in consider...
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Online Access: | http://hdl.handle.net/2115/90469 https://doi.org/10.1098/rsos.221353 |
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/90469 2023-11-05T03:40:43+01:00 Rostrum morphology and feeding strategy of the baleen whale indicate that right whales and pygmy right whales became skimmers independently Tanaka, Yoshihiro http://hdl.handle.net/2115/90469 https://doi.org/10.1098/rsos.221353 eng eng Royal Society http://hdl.handle.net/2115/90469 Royal Society Open Science, 9(11): 221353 http://dx.doi.org/10.1098/rsos.221353 © 2022 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. http://creativecommons.org/licenses/by/4.0/ lunge feeding skim feeding Cetacea Mammalia convergent 460 article fthokunivhus https://doi.org/10.1098/rsos.221353 2023-10-06T00:06:48Z Baleen whales have lost their functional teeth and begun to use their baleen plates to feed on small prey. Modern baleen whales exhibit different types of feeding strategies, such as lunging, skimming and so on. The evolution of feeding strategy in the Chaeomysticeti is an important step in considering niche partitioning and diversification, feeding efficiency and gigantism, and evolution and extinction. This study analyses the rostrum morphology to test the hypothesis that specific rostral morphologies facilitate special feeding strategies, using modern species and their observed feeding strategies. By this means, the convergence of rostral morphology can be recognized in the closest groups in the morphospace. As a result, the two linages (Balaenidae and Caperea marginata) are recognized to have convergent rostral morphology. In addition, an early member of the Chaeomysticeti, Yamatocetus canaliculatus, and most fossil species are plotted in or close to the cluster of lunge feeders. The original feeding strategy of the Chaeomysticeti could be more similar to lunge feeding than to skim feeding. Fossil relatives of the two linages showing transitional conditions indicate that they shifted to skim feeding independently. The evolution of the feeding strategy of the Chaeomysticeti is possibly more complex than that was thought. Article in Journal/Newspaper baleen whale baleen whales Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Royal Society Open Science 9 11 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
lunge feeding skim feeding Cetacea Mammalia convergent 460 |
spellingShingle |
lunge feeding skim feeding Cetacea Mammalia convergent 460 Tanaka, Yoshihiro Rostrum morphology and feeding strategy of the baleen whale indicate that right whales and pygmy right whales became skimmers independently |
topic_facet |
lunge feeding skim feeding Cetacea Mammalia convergent 460 |
description |
Baleen whales have lost their functional teeth and begun to use their baleen plates to feed on small prey. Modern baleen whales exhibit different types of feeding strategies, such as lunging, skimming and so on. The evolution of feeding strategy in the Chaeomysticeti is an important step in considering niche partitioning and diversification, feeding efficiency and gigantism, and evolution and extinction. This study analyses the rostrum morphology to test the hypothesis that specific rostral morphologies facilitate special feeding strategies, using modern species and their observed feeding strategies. By this means, the convergence of rostral morphology can be recognized in the closest groups in the morphospace. As a result, the two linages (Balaenidae and Caperea marginata) are recognized to have convergent rostral morphology. In addition, an early member of the Chaeomysticeti, Yamatocetus canaliculatus, and most fossil species are plotted in or close to the cluster of lunge feeders. The original feeding strategy of the Chaeomysticeti could be more similar to lunge feeding than to skim feeding. Fossil relatives of the two linages showing transitional conditions indicate that they shifted to skim feeding independently. The evolution of the feeding strategy of the Chaeomysticeti is possibly more complex than that was thought. |
format |
Article in Journal/Newspaper |
author |
Tanaka, Yoshihiro |
author_facet |
Tanaka, Yoshihiro |
author_sort |
Tanaka, Yoshihiro |
title |
Rostrum morphology and feeding strategy of the baleen whale indicate that right whales and pygmy right whales became skimmers independently |
title_short |
Rostrum morphology and feeding strategy of the baleen whale indicate that right whales and pygmy right whales became skimmers independently |
title_full |
Rostrum morphology and feeding strategy of the baleen whale indicate that right whales and pygmy right whales became skimmers independently |
title_fullStr |
Rostrum morphology and feeding strategy of the baleen whale indicate that right whales and pygmy right whales became skimmers independently |
title_full_unstemmed |
Rostrum morphology and feeding strategy of the baleen whale indicate that right whales and pygmy right whales became skimmers independently |
title_sort |
rostrum morphology and feeding strategy of the baleen whale indicate that right whales and pygmy right whales became skimmers independently |
publisher |
Royal Society |
url |
http://hdl.handle.net/2115/90469 https://doi.org/10.1098/rsos.221353 |
genre |
baleen whale baleen whales |
genre_facet |
baleen whale baleen whales |
op_relation |
http://hdl.handle.net/2115/90469 Royal Society Open Science, 9(11): 221353 http://dx.doi.org/10.1098/rsos.221353 |
op_rights |
© 2022 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1098/rsos.221353 |
container_title |
Royal Society Open Science |
container_volume |
9 |
container_issue |
11 |
_version_ |
1781696900462804992 |