Article
Zoology
Cecilia Soledad Carnovale, Matias Sebastian Mora, Mariano Lisandro Merino, Gabriela Paula Fernandez
Summary: The genus Ctenomys is the most speciose of all known subterranean rodents, with most species belonging to eight distinctive phylogenetic groups. The Ctenomys talarum phylogenetic group has not seen a change in the number of species in recent years.
Article
Environmental Sciences
Tays Daiane Izidoro, Suelen Cristina Grott, Bruno Busnello Kubiak, Thales Renato Ochotorena de Freitas, Thiago Caique Alves, Eduardo Alves Almeida, Daniel Galiano
Summary: Rampant urbanization in coastal areas impacts the health of the tuco-tuco Ctenomys flamarioni. This study found that individuals in the impacted area had higher levels of oxidative damage and lower antioxidant activity, indicating the negative effect of anthropogenic activities on the oxidative status of animals in this environment. The findings can be used as a reference for future studies on tuco-tucos.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Zoology
Ailin Austrich, Ivanna Haydee Tomasco, Fernando Javier Mapelli, Marcelo Javier Kittlein, Ana Paula Cutrera, Matias Sebastian Mora
Summary: The coastal dunes of the southeast of Buenos Aires province, Argentina, are home to two described species of tuco-tucos: Ctenomys talarum and C. australis. This study focuses on C. talarum populations at the western end of its distribution and finds that they belong to an independent lineage highly differentiated from other populations. These populations show a strong affinity with the magellanicus group in Patagonia, indicating a possible distinct cryptic species.
JOURNAL OF MAMMALOGY
(2023)
Article
Ecology
Facundo Luna, Jorge Sastre-Serra, Jordi Oliver, C. Daniel Antenucci
Summary: In mammals, the integrated requirements of all activities must conform to a sustained rate of metabolism for the pup's development and adult life. Partitioning available energy according to short-term priorities allows animals to optimize long-term reproductive success. In this study, the development of thermogenic capacity in altricial rodent pups, specifically Ctenomys talarum, was evaluated. The results showed that non-shivering thermogenesis was absent in the pups until day 60, despite the presence of molecular markers for thermogenesis in brown adipose tissue deposits. However, the total thermogenic capacity became fixed at an early age, indicating an improvement in shivering thermogenesis efficiency after day 10.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Zoology
V Brachetta, C. E. Schleich, R. R. Zenuto
Summary: Predation and parasitism have effects on the behavior and physiological responses of organisms. The tuco-tucos exhibited anxiogenic response when exposed to predator cues. However, the presence of parasites did not significantly affect antipredatory behaviors.
CANADIAN JOURNAL OF ZOOLOGY
(2022)
Article
Agriculture, Dairy & Animal Science
Thays Duarte de Oliveira, Natasha Avila Bertocchi, Rafael Kretschmer, Edivaldo H. C. de Oliveira, Marcelo de Bello Cioffi, Thomas Liehr, Thales R. O. de Freitas
Summary: In this study, molecular cytogenetic analysis was used to investigate the genomic elements involved in the population variation observed in the Neotropical underground rodents of the genus Ctenomys. The results suggest that there is a correlation between repetitive genomic content and localization of evolutionary breakpoint regions, highlighting their direct impact on promoting chromosomal rearrangements.
Article
Behavioral Sciences
J. Iribarne, V. Brachetta, M. Kittlein, C. Schleich, R. Zenuto
Summary: One of the main selection pressures in nature is predation, which can affect biological traits. Maternal stress during pregnancy and lactation can trigger responses in offspring. This study examined the effects of maternal stress on spatial abilities of progeny in rodents and found that exposure to predator cues did not negatively impact offspring's spatial abilities, suggesting that transgenerational effects of maternal stress may vary depending on species and the type of stressor.
Review
Zoology
R. Tatiana Sanchez, Ivanna H. Tomasco, M. Monica Diaz, Ruben M. Barquez
Summary: Ctenomys is a speciose genus of South American rodents, and the systematics of this genus are not fully understood. This study provides new information on Ctenomys coludo and confirms its placement as a member of the mendocinus group. The study also recognizes Ctenomys johannis as a valid species and presents unpublished information on it.
JOURNAL OF MAMMALOGY
(2023)
Article
Psychology, Biological
Maria Sol Fanjul, Ana Paula Cutrera, Facundo Luna, Roxana Rita Zenuto
Summary: The growth of personality research has led to the integration of consistent variation of individual behaviour in multidimensional approaches including physiological variables. In this study, wild-caught males of Ctenomys talarum were used to assess the relationships between personality traits and physiological variables. The results provide insight into the existence of coping styles in male C. talarum and how they relate to different physiological factors.
BEHAVIOURAL PROCESSES
(2022)
Article
Biochemistry & Molecular Biology
Ivanna H. Tomasco, Facundo M. Giorello, Nicolas Boullosa, Matias Feijoo, Cecilia Lanzone, Enrique P. Lessa
Summary: Incomplete lineage sorting (ILS) and introgression have important roles in biological differentiation, particularly in rapid radiations. Assessment across genomic regions is essential to estimate the relative frequency of these processes. This study used transcriptomics to test for introgression and estimated the frequency of ILS in a set of closely related species.
MOLECULAR PHYLOGENETICS AND EVOLUTION
(2022)
Article
Physiology
A. P. Cutrera, F. Luna, R. R. Zenuto
Summary: The acute-phase response (APR) is an energetically costly innate immune response that leads to changes in body temperature, body weight, and behavior. The effects of this response vary between sexes and individuals, and circulating endotoxin levels peak 3 hours after injection.
PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY
(2022)
Article
Zoology
Maria C. Carrizo, Roxana R. Zenuto, Facundo Luna, Ana P. Cutrera
Summary: The acute phase response (APR), coordinated by a complex network of components of the immune and neuroendocrine systems, plays a key role in early immune defense. Ctenomys talarum exhibits an effective APR with a low increase in their daily energy expenditure, regardless of LPS dose.
JOURNAL OF EXPERIMENTAL ZOOLOGY PART A-ECOLOGICAL AND INTEGRATIVE PHYSIOLOGY
(2023)
Article
Zoology
Diego A. Caraballo, Sabrina Laura Lopez, Sebastian Botero-Canola, Scott Lyell Gardner
Summary: South American subterranean rodents of the genus Ctenomys are diverse and in urgent need of conservation efforts. A study was conducted to assess their conservation status based on distribution range and collection localities. The results showed that 78% of the species are threatened and 69% have little or no overlap with protected areas.
JOURNAL OF MAMMALOGY
(2023)
Article
Biochemistry & Molecular Biology
Rodrigo Fornel, Renan Maestri, Pedro Cordeiro-Estrela, Daniela Sanfelice, Thales Renato O. de Freitas
Summary: The relationship between chromosomal and morphological variation in Ctenomys lami was analyzed in this study. Results showed sexual dimorphism in cranial size and shape, with males being larger than females. The study supported the existence of four karyotypic blocks based on morphological variation, but did not find a direct relationship between chromosomal and cranial morphological variation in C. lami.
GENETICS AND MOLECULAR BIOLOGY
(2023)
Article
Environmental Sciences
Kajal Patel, Meenakshi Chaurasia, Kottapalli Sreenivasa Rao
Summary: Heavy metals beyond permissible limits are major contaminants that pose a persistent and health hazard. This study demonstrates that commonly found plant species in urban areas of Delhi can serve as effective biomonitors and bioaccumulators for heavy metal pollution, with certain plant species showing exceptional proficiency in monitoring and mitigating heavy metals.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
