Decoupled Patterns of Diversity and Disparity Characterize an Ecologically Specialized Lineage of Neotropical Cricetids

Missagia, Rafaela Velloso; Casali, Daniel M.; Patterson, Bruce D.; Perini, Fernando A.

doi:10.1007/s11692-022-09596-8

Cited by 2 publications

(1 citation statement)

References 97 publications

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“…1 ), implying recent rapid speciation but slow phenotypic differentiation. This pattern has been repeatedly recovered in the phylogenetic trees of land plants [ 66 ] and animals [ 67 ], and is usually considered as a result of evolutionary rate heterogeneity [ 68 , 69 ]. However, we cannot rule out the possibility that both diversity and disparity have been shaped by the same factors, such as ecological opportunity, which in empty form (newly formed and / or opened ecospace due to evolutionary innovations) is expected to promote both diversification and differentiation [ 70 ].…”

Section: Discussionmentioning

confidence: 99%

The global pattern of epiphytic liverwort disparity: insights from Frullania

Yu,

Fan,

Zhou

et al. 2024

BMC Ecol Evo

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The geographical and ecological patterns of morphological disparity are crucial to understand how species are assembled within communities in the context of the evolutionary history, morphological evolution and ecological interactions. However, with limited exceptions, rather few studies have been conducted on the global pattern of disparity, particularly in early land plants. Here we explored the spatial accumulation of disparity in a morphologically variable and species rich liverwort genus Frullania in order to test the hypothesis of latitude disparity gradient. We compiled a morphological data set consisting of eight continuous traits for 244 currently accepted species, and scored the species distribution into 19 floristic regions worldwide. By reconstructing the morphospace of all defined regions and comparisons, we identified a general Gondwana-Laurasia pattern of disparity in Frullania. This likely results from an increase of ecological opportunities and / or relaxed constraints towards low latitudes. The lowest disparity occurred in arid tropical regions, largely due to a high extinction rate as a consequence of paleoaridification. There was weak correlation between species diversity and disparity at different spatial scales. Furthermore, long-distance dispersal may have partially shaped the present-day distribution of Frullania disparity, given its frequency and the great contribution of widely distributed species to local morphospace. This study not only highlighted the crucial roles of paleoenvironmental changes, ecological opportunities, and efficient dispersal on the global pattern of plant disparity, but also implied its dependence on the ecological and physiological function of traits.

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Section: Discussionmentioning

confidence: 99%

The global pattern of epiphytic liverwort disparity: insights from Frullania

Yu,

Fan,

Zhou

et al. 2024

BMC Ecol Evo

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Comparative morphology of the rhinarium and upper lip in sigmodontine rodents: Refined nomenclature, intertribal variation in a phylogenetic framework, and functional inferences

Pardiñas,

Brito,

Soto

et al. 2024

Journal of Morphology

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Rodents have received substantial attention in the study of olfaction. However, the rhinarium, the naked part of the nose, which plays an important role in chemical, tactile, and thermal perception, has been relatively overlooked. This study presents a comprehensive analysis of the rhinarium morphology and spatially associated structures (i.e., upper lip, and philtrum) in sigmodontines, a diverse group within the Cricetidae rodents. The research covers 483 specimens representing 145 species, accounting for 74% of genera in the clade, including all 13 recognized tribes, three incertae sedis genera, and the murid representatives Mus musculus and Rattus norvegicus. The inconsistent use of terminology in describing rhinarium traits across the literature poses a challenge for comparative analyzes. To address this issue, a standardized terminology was proposed to characterize the rhinarium. A paired complex protuberance typically with epidermal ridges (i.e., rhinoglyphics), termed here the tubercle of Hill, was identified as a distinctive feature in muroid rhinaria. Comparative assessments among tribes revealed unique sets of features defining each major clade, encompassing variations in hairiness, dorsum nasi complexity, size and positioning of the tubercle of Hill, and other key attributes. Two primary rhinarium configurations were discerned: one shared by Oryzomyalia and Sigmodontini and another specific to Ichthyomyini. The former groups display a ventrally positioned rhinarium prominently featuring the tubercle of Hill and sculptured areola circularis. In contrast, Ichthyomyini exhibit a frontally directed rhinarium characterized by an enlarged dorsum nasi fused to the tubercle of Hill, resulting in a distinctive “cherry” appearance. Convergent rhinarium structures observed in fossorial species, characterized by well‐developed plica alaris and hair fringes, are presumed to mitigate potential damage during digging. Conversely, semiaquatic carnivorous sigmodontines showcase an integrated apical structure in their rhinarium, facilitating enhanced somatosensory capabilities crucial for predation activities during diving expeditions.

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Decoupled Patterns of Diversity and Disparity Characterize an Ecologically Specialized Lineage of Neotropical Cricetids

Cited by 2 publications

References 97 publications

The global pattern of epiphytic liverwort disparity: insights from Frullania

The global pattern of epiphytic liverwort disparity: insights from Frullania

Comparative morphology of the rhinarium and upper lip in sigmodontine rodents: Refined nomenclature, intertribal variation in a phylogenetic framework, and functional inferences

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