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Text
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<a href="http://doi.org/10.1111/j.1748-7692.2010.00406.x" target="_blank" rel="noreferrer noopener">http://doi.org/10.1111/j.1748-7692.2010.00406.x</a>
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Pages
282-294
Issue
2
Volume
27
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Title
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Olfaction and brain size in the bowhead whale (Balaena mysticetus)
Publisher
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Marine Mammal Science
Date
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2011
2011-04
Subject
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anatomy; attraction; Balaena mysticetus; bowhead whale; brain; cetaceans; dimethyl sulfide; evolution; evolutionary dynamics; Marine & Freshwater Biology; olfaction; olfactory; primates; receptor gene repertoires; receptor genes; reduction; seabirds; subgenome; vertebrates; Zoology
Creator
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Thewissen J G M; George J; Rosa C; Kishida T
Description
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P>Although there are several isolated references to the olfactory anatomy of mysticetes, it is usually thought that olfaction is rudimentary in this group. We investigated the olfactory anatomy of bowhead whales and found that these whales have a cribriform plate and small, but histologically complex olfactory bulb. The olfactory bulb makes up approximately 0.13% of brain weight, unlike odontocetes where this structure is absent. We also determined that 51% of olfactory receptor genes were intact, unlike odontocetes, where this number is less than 25%. This suggests that bowheads have a sense of smell, and we speculate that they may use this to find aggregations of krill on which they feed.
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<a href="http://doi.org/10.1111/j.1748-7692.2010.00406.x" target="_blank" rel="noreferrer noopener">10.1111/j.1748-7692.2010.00406.x</a>
Format
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Journal Article
2011
anatomy
attraction
Balaena mysticetus
bowhead whale
Brain
cetaceans
dimethyl sulfide
Evolution
evolutionary dynamics
George J
Journal Article
Kishida T
Marine & Freshwater Biology
Marine Mammal Science
olfaction
olfactory
Primates
receptor gene repertoires
receptor genes
reduction
Rosa C
seabirds
subgenome
Thewissen J G M
Vertebrates
Zoology