Article
Forestry
Kaiyu Yang, Jianghao Wu, Xinman Li, Xinbo Pang, Yangchen Yuan, Guohui Qi, Minsheng Yang
Summary: This study compared the application of traditional morphometric methods (TMMs) and geometric morphometric methods (GMMs) in the study of intraspecific leaf morphological characters of Quercus dentata. The results showed that GMMs had higher classification accuracy and could provide more information about leaf shape, while TMMs could provide more information about leaf size.
JOURNAL OF FORESTRY RESEARCH
(2022)
Article
Agriculture, Dairy & Animal Science
Jordan Hernandez, Amado Villalobos-Leiva, Adriana Bermudez, Daniela Ahumada-C, Manuel J. Suazo, Margarita Correa, Angie Diaz, Hugo A. Benitez
Summary: This study analyzes the morphological variability of Caquetaia kraussii and finds that environmental stress influences about 10% of its body shape, while the majority of the variability is not directly influenced by environmental parameters, suggesting a possible effect from sexual dimorphism. Additionally, there is shape variation among populations of different localities, which may be subject to environmental and sexual stresses.
Article
Agriculture, Dairy & Animal Science
Ozan Gundemir, Tomasz Szara, Ebru Eravci Yalin, Murat Karabagli, Zihni Mutlu, Osman Yilmaz, Serkan Kemal Buyukunal, Milos Blagojevic, Pere M. Pares-Casanova
Summary: From a taxonomic perspective, it is crucial to understand the differences in skull shape between species and breeds. This study identified variations in the shape of the skulls of three different cat breeds, with the orbit being the main differentiating factor. The shape of the orbit's edge has been shown to be a distinctive feature for distinguishing between cat skulls.
Article
Ecology
Maxime Taverne, Hugo Dutel, Michael Fagan, Anamaria Stambuk, Duje Lisicic, Zoran Tadic, Anne-Claire Fabre, Anthony Herrel
Summary: This study found that head shape and jaw muscle structure evolve similarly under similar ecological circumstances, with different muscle groups affecting changes in cranium and mandible shape. Selective regimes are primary drivers of phenotypic variation, with intraspecific and interspecific patterns of variation generally consistent.
Article
Environmental Sciences
Neeta Parajulee Karki, Robert E. Colombo, Karen F. Gaines, Anabela Maia
Summary: This study evaluated the effects of water-soluble 17 beta estradiol exposure on the external morphology of Bluegill, showing changes in male dimorphic characters and morphological structure. These changes could potentially impact reproductive success and mate selection in fish populations.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Multidisciplinary Sciences
Chi Zhang, Arthur Porto, Sara Rolfe, Altan Kocatulum, A. Murat Maga
Summary: Manually collecting landmarks for complex morphological phenotypes can be tedious and prone to errors. We introduce a fast and open-source automated landmarking pipeline (MALPACA) that uses multiple templates to accommodate large-scale variations. Our results show that MALPACA outperforms single-template methods and we also provide a K-means method for template selection. MALPACA is an efficient and reproducible method that can handle large morphological variability.
Article
Environmental Sciences
Federico Marquez, Yanina L. Idaszkin
Summary: The study suggests that using the shape of crab carapaces as a biomarker for the environmental quality of salt marsh systems, particularly for monitoring metal pollution, is an effective method. By applying geometric morphometrics, the research delves into symmetric and asymmetric variations in carapace shape, finding that the symmetric component can serve as a stress biomarker related to metal contamination.
Article
Agriculture, Dairy & Animal Science
Darija Lemic, Helena Viric Gasparic, Patricija Majcenic, Ivana Pajac Zivkovic, Mario Bjelis, Manuel J. Suazo, Margarita Correa, Jordan Hernandez, Hugo A. Benitez
Summary: This study aimed to investigate the morphological variability of the box tree moth from Croatia and assess its invasive characteristics, flight potential, and risk of further spread. The results revealed significant differences in wing shapes between populations from different geographical locations, as well as subtle wing shape sexual dimorphism.
Article
Ecology
R. J. Scott, G. E. Haines, N. R. Biedak, J. A. Baker
Summary: Freshwater populations of threespine stickleback from the east coast of North America show less variability, possibly due to their young age or a lack of data. However, we found that stickleback populations from the west coast of Newfoundland, Canada, exhibit extensive morphological variability similar to populations in mainland British Columbia, Alaska, and western Europe.
ENVIRONMENTAL BIOLOGY OF FISHES
(2023)
Article
Biology
Talia M. Lowi-Merri, Roger B. J. Benson, Santiago Claramunt, David C. Evans
Summary: The study reveals the correlation between the size and shape of avian sternum and locomotory capabilities, including flight, swimming, and running abilities. It highlights the importance of sternum form and function in modern birds, providing insights into the evolution of powered avian flight.
Article
Evolutionary Biology
Nicole D. S. Grunstra, Silvester J. Bartsch, Anne Le Maitre, Philipp Mitteroecker
Summary: Phylogenetic reconstruction based on morphometric data is hindered by homoplasies, with similarities in cranial form reflecting ecological similarities rather than phylogenetic relatedness. Bone contributions and small-scale shape features show high correlation with phylogenetic distances in papionin monkeys, contrasting with the stronger association of ecological and behavioral variables with outline shape and large-scale shape features. Studies benefit from decomposing shape variation into different spatial scales.
SYSTEMATIC BIOLOGY
(2021)
Article
Biology
Romain Pintore, Raphael Cornette, Alexandra Houssaye, Ronan Allain
Summary: This study uses 3D geometric morphometrics and Gaussian mixture modeling to investigate hindlimb variation in the best-preserved specimens from a herd of ornithomimosaurs. The results reveal evidence of sexual dimorphism, which is important for a better understanding of intraspecific variation in fossil dinosaurs and addressing taxonomical and ecological questions related to dinosaur evolution.
Article
Entomology
Daniel Zamora-Mejias, Margarita Ojeda, Rodrigo A. Medellin, Bernal Rodriguez-Herrera, Juan B. Morales-Malacara
Summary: We evaluated the morphometric variation of Periglischrus paracaligus wing mite in Mexico and found high intraspecific variation but subtle geographic differentiation. Females showed more phenotypic variation than males, and southern and northern colonies were grouped into two distinct clades. However, no consistent pattern could be identified to distinguish migratory from nonmigratory populations. We suggest that migratory populations in northern Mexico may have come into contact with nonmigratory populations in central and southern Mexico, forming a panmictic population.
JOURNAL OF MEDICAL ENTOMOLOGY
(2022)
Article
Plant Sciences
Kristyna Hoskova, Adela Pokorna, Jiri Neustupa, Petr Pokorny
Summary: The study found that interspecific variation in phytolith shape outweighed intraspecific variation; individual phytolith shapes were classified with 83% accuracy into their respective species; variation in phytolith shapes within species but among populations, possibly related to environmental heterogeneity, was comparatively low.
Article
Plant Sciences
A. C. Ibanez, A. N. Sersic, A. A. Cocucci, M. More
Summary: This study explores the relationship between flower morphology and pollination modes in the South American genus Jaborosa. It finds that variations in flower shape are associated with shifts in pollination modes, promoting diversification within the genus.
Article
Biodiversity Conservation
Francisco Diogo R. Sousa, Lourdes M. A. Elmoor-Loureiro, Sandro Santos
JOURNAL OF NATURAL HISTORY
(2018)
Article
Multidisciplinary Sciences
Samuel Coelho Faria, Roberta Daniele Klein, Patricia Gomes Costa, Marcelo Schuler Crivellaro, Sandro Santos, Sergio Luiz de Siqueira Bueno, Adalto Bianchini
SCIENTIFIC REPORTS
(2018)
Article
Environmental Sciences
Alberto S. Goncalves, Gabriel C. Costa, Georgina Bond-Buckup, Marlise L. Bartholomei-Santos, Sandro Santos
AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
(2018)
Article
Evolutionary Biology
Bruno B. Kubiak, Renan Maestri, Thamara S. de Almeida, Leandro R. Borges, Daniel Galiano, Rodrigo Fornel, Thales R. O. De Freitas
BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
(2018)
Article
Limnology
Glaucia Bolzan Cogo, Cristiane Biasi, Sandro Santos
FUNDAMENTAL AND APPLIED LIMNOLOGY
(2018)
Article
Evolutionary Biology
L. T. Leipnitz, R. Fornel, L. E. J. Ribas, B. B. Kubiak, D. Galiano, T. R. O. de Freitas
JOURNAL OF MAMMALIAN EVOLUTION
(2020)
Article
Zoology
Cristiane Biasi, Glaucia B. Cogo, Luiz U. Hepp, Sandro Santos
IHERINGIA SERIE ZOOLOGIA
(2019)
Article
Anatomy & Morphology
Alexandre Palaoro, Danilo G. Muniz, Sandro Santos
JOURNAL OF MORPHOLOGY
(2020)
Article
Environmental Sciences
Cristina Cerezer, Aline Teixeira Marins, Felipe Osmari Cerezer, Eduardo Stringini Severo, Jossiele Wesz Leitemperger, Nelson Miguel Grubel Bandeira, Renato Zanella, Vania Lucia Loro, Sandro Santos
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2020)
Article
Evolutionary Biology
Bianca L. Zimmermann, Ivanice Buzatto, Sandro Santos, Federico Giri, Franco Teixeira de Mello, Keith A. Crandall, Marcos Perez-Losada, Marlise L. Bartholomei-Santos
Summary: Cryptic species pose a challenge for morphologically based species identification, but molecular approaches can provide valuable taxonomic hypotheses. Research on South American freshwater crabs of the genus Aegla suggests that morphological similarity does not always indicate genetic relatedness, and there may be cryptic species present. The diversity of these crustaceans seems to be influenced by factors such as habitat fragmentation, morphological stasis, and recent divergence.
Article
Zoology
Mrcio Limberger, Sandro Santos, Daniela Da Silva Castiglioni
Summary: This study describes a new species of freshwater amphipod in the Varzea River basin in southern Brazil, and compares it with previously discovered species. The diversity of freshwater amphipods in this region is intriguing, and further research can help uncover the evolutionary history and patterns of diversification of the genus Hyalella.
Article
Fisheries
Alessandra Janaina Becker, Sandro Santos, Berta Maria Heinzmann, Braulio Otomar Caron, Bernardo Baldisserotto
Summary: This study evaluated the induction and recovery time of anesthesia in the amphipod crustacean H. bonariensis exposed to essential oils. The results showed that the essential oils and their major compounds affected the anesthesia and locomotor activity of the amphipods.
Article
Zoology
Glaucia Brisotto, Luciane Ayres-Peres, Sandro Santos
Summary: This study describes the population structure of Tallitroides topitotum in terms of morphometric and reproductive aspects. The research findings show a significant correlation between body and head lengths, as well as body and marsupium lengths in ovigerous females. However, there is no correlation between morphometric data and female fertility. Additionally, there is a positive correlation between the size of individuals and the latitude of occurrence, although not significant.
IHERINGIA SERIE ZOOLOGIA
(2022)
Article
Multidisciplinary Sciences
Raissa Prior Migliorini, Rodrigo Fornel, Carlos Benhur Kasper
Article
Zoology
Fernando Benso-Lopes, Sandro Santos, Alexandre V. Palaoro
JOURNAL OF EXPERIMENTAL ZOOLOGY PART A-ECOLOGICAL AND INTEGRATIVE PHYSIOLOGY
(2019)
