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Analysis of the mechanisms regulating petal development and establishment of a repetitive sequence analysis method in Japanese morning glory
Get PDF総合研究大学院大学博士（理学）application/pdf総研大甲第2586号doctoral thesi
Hybrid CNN-Based Models for Enhancing Human Activity Recognition Using Wearable Sensor Data
Get PDF総合研究大学院大学博士（情報学）application/pdf総研大甲第2615号doctoral thesi
Multi-cusped postcanine teeth are associated with zooplankton feeding in phocid seals
Get PDFTooth morphologies often reflect diet in animals. Among marine mammals, a well-known example is krill-feeding crabeater seals (Lobodon carcinophaga), in which complex, comb-like postcanine teeth function as a sieve by retaining krill inside their mouth while expelling water. However, information on teeth morphology and function is scarce for other seal species. A recent bio-logging study found that Baikal seals (Pusa sibirica) feed on tiny pelagic amphipods at remarkably high rates with highly multi-cusped postcanine teeth, highlighting the need for comparative analyses on teeth morphologies and diets in phocid seals. Here, we quantified postcanine teeth morphology for 13 seal species based on museum skull specimens, with a particular focus on Baikal seals and their related species (genus Pusa and Phoca). The species in Pusa, including Baikal seals, had more specialized multi-cusped postcanine teeth than Phoca species, reflecting higher zooplankton proportions in their diets. Postcanine teeth of Baikal seals exhibited the highest degree of specialization among Pusa, even when the effect of age-related wear is controlled for. This result agrees with the highest zooplankton preference in this species. Further, we found a strong positive correlation between the degree of specialization in postcanine teeth and zooplankton reliance across phocid seal species. Our findings indicate that the functional role of multi-cusped postcanine teeth as a sieve is not limited to crabeater seals but prevail in many phocid seals feeding on zooplankton.journal articl
Instability and Evolution of Shocked Clouds Formed by Collisions between Filamentary Molecular Clouds
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Study on joint of Tungsten and Reduced Activation Ferritic/Martensitic Steel by combined joint method of brazing and diffusion bonding
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Efficient Collective Communication in Interconnection Networks with Shortcut Network Topologies
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A study on the mechanism of dorsoventral axis formation in rice embryo
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Identification and characterization of novel modulators of chromatin accessibility
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Insights on the processing, characterization, and coloration of celadon glazes from spectroscopic and imaging investigations
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Cell Type-Dependent Activity Modulation of Movement-Related Layer 5 Neurons in the Motor Cortex
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