Rhagoletis jamaicensis Foote, 1981 and an undetermined species of the psalida group, are recorded for the first time in Colombia. The morphological variations of the Colombian specimens of these species and of other species closely related are discussed.
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http://dx.doi.org/10.11646/zootaxa.4273.4.5 | DOI Listing |
J Exp Zool A Ecol Integr Physiol
January 2025
Department of Biology, Colgate University, Hamilton, New York, USA.
An animal's body mass is said to be indirectly related to its rate of heat loss; that is, smaller animals with higher surface area to volume tend to lose heat faster than larger animals. Thus, thermoregulation should be related to body size, however, generalizable patterns are still unclear. Domestic dogs are a diverse species of endothermic mammals, including a 44-fold difference in body size.
View Article and Find Full Text PDFR Soc Open Sci
January 2025
Centre for Integrative Anatomy, Department of Cell and Developmental Biology, University College London, London WC1E 6BT, UK.
The mechanical properties of dietary items are known to influence skull morphology, either through evolution or by phenotypic plasticity. Here, we investigated the impact of supplementary feeding of peanuts on the morphology of red squirrels () from five populations in Britain (North Scotland, Borders, Jersey and two temporally distinct populations from Formby (Merseyside)). Stable isotope analysis confirmed dietary ecology in 58 specimens.
View Article and Find Full Text PDFJ Morphol
January 2025
Departamento de Vertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil.
Although numerous studies have addressed some aspects of the cranial osteology of Nearctic dipsadid species, only the species within the genera Heterodon and Carphophis have a formal published description of their skull. Similarly, vertebral data on such species are extremely scarce, and most of the available literature is focused on fossils. Such group has a complex phylogenetic history, being recovered as monophyletic or nonmonophyletic depending on the approach.
View Article and Find Full Text PDFBMC Plant Biol
January 2025
College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China.
Background: The confused taxonomic classification of Crucigenia is mainly inferred through morphological evidence and few nuclear genes and chloroplast genomic fragments. The phylogenetic status of C. quadrata, as the type species of Crucigenia, remains considerably controversial.
View Article and Find Full Text PDFJ Anat
January 2025
Institut des Sciences de l'Évolution de Montpellier (ISEM), Univ Montpellier, CNRS, IRD, Montpellier, France.
Raoellidae are small artiodactyls from the Indian subcontinent closely related to stem cetaceans. They bring crucial information to understand the early phase of the land-to-water transition in Cetacea. If they are considered to be partly aquatic, the question of their dietary habits remains partly understood due to their "transitional" morphology.
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