Article
Environmental Sciences
Jeremiah M. Yahn, William H. Karasov
Summary: Exposure to PBDEs can lead to growth depression in tadpoles, resulting in reduced body length, mass, and development, regardless of rearing temperature. A simple energy budget analysis suggests that a decrease in feeding rate could explain the lower mass gain in tadpoles exposed to PBDEs.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2021)
Article
Zoology
Carlos A. Flores, Medardo Arreortua, Edna Gonzalez-Bernal
Summary: Although amphibian consumption by humans has been reported globally, this practice is not well studied despite its direct implications to the decline of amphibian populations. The consumption of Duellmanohyla ignicolor tadpoles by the Chinantec people in Mexico is documented and analyzed in this study, highlighting the vulnerability of the species due to their behavior and habitat preferences.
Article
Multidisciplinary Sciences
Fang Ye, Guodong Zhang, E. Weigao, Haide Chen, Chengxuan Yu, Lei Yang, Yuting Fu, Jiaqi Li, Sulei Fu, Zhongyi Sun, Lijiang Fei, Qile Guo, Jingjing Wang, Yanyu Xiao, Xinru Wang, Peijing Zhang, Lifeng Ma, Dapeng Ge, Suhong Xu, Juan Caballero-Perez, Alfredo Cruz-Ramirez, Yincong Zhou, Ming Chen, Ji-Feng Fei, Xiaoping Han, Guoji Guo
Summary: This study developed a new method of single-cell sequencing to analyze the perturbation patterns of cell type-related gene expression in neotenic and metamorphosed axolotls. By analyzing gene expression of over 1 million single cells, the first adult axolotl cell landscape was constructed. Comparison of single-cell transcriptomes between tissues of neotenic and metamorphosed axolotls revealed the heterogeneity of non-immune parenchymal cells in different tissues and identified their regulatory network.
NATURE COMMUNICATIONS
(2022)
Article
Endocrinology & Metabolism
Bidisha Paul, Rejenae Dockery, Valery M. Valverde, Daniel R. Buchholz
Summary: Corticosteroids play a critical role in development and stress responses in vertebrates. A new gene called frzb has been identified as a marker for corticosterone response in frog tadpole tails, making it useful for hormone treatments and endocrine disruption studies.
FRONTIERS IN ENDOCRINOLOGY
(2023)
Article
Zoology
Mauro Sergio Cruz Souza Lima, Jonas Pederassi, Carlos Alberto dos Santos Souza
Summary: This study investigates the distribution, abundance, and interactions of tadpole species in a semiarid environment in Northeastern Brazil. The results show random aggregation behavior among the species, without interspecific dependencies, and with only three dominant species. The hydroperiod has the greatest influence on larval behavior among the abiotic factors.
AMPHIBIAN & REPTILE CONSERVATION
(2022)
Article
Environmental Sciences
Mercedes Acquaroni, Florencia Nunez Cresto, Cristina Perez Coll, Gabriela Svartz
Summary: This study evaluates the toxicity of the widely used fungicide tebuconazole on the embryo-larval development of the South American toad Rhinella arenarum. The results show that larvae are more sensitive to tebuconazole than embryos, but toxicity increases significantly in embryos with chronic exposure. Tebuconazole causes several sublethal effects on embryo development and accelerates metamorphosis at low concentrations.
ENVIRONMENTAL TOXICOLOGY
(2023)
Article
Virology
Namarta Kalia, Kelsey A. Hauser, Sarah Burton, Muhammad Riadul Haque Hossainey, Mira Zelle, Marko E. Horb, Leon Grayfer
Summary: Global amphibian biodiversity is at risk due to pathogens such as the Frog Virus 3 (FV3) ranavirus, highlighting the importance of understanding amphibian antiviral defenses. Contrary to previous beliefs, tadpoles are found to be more resistant to FV3 than metamorphic froglets. This resistance is conferred by myeloid cells in the tadpole kidneys, which have elevated expression of endogenous retroviruses (ERVs). ERVs activate cellular RNA-sensing pathways, resulting in increased expression of antiviral interferon cytokines and offering protection against FV3.
JOURNAL OF VIROLOGY
(2022)
Article
Hospitality, Leisure, Sport & Tourism
Clarissa S. Whiting, Wouter Hoogkamer, Rodger Kram
Summary: Compared to conventional racing shoes, Nike Vaporfly 4% running shoes can reduce the metabolic cost in level, uphill, and downhill running. However, the savings provided during uphill running are relatively smaller.
JOURNAL OF SPORT AND HEALTH SCIENCE
(2022)
Review
Neurosciences
Mauro Nardon, Federico Ruzzante, Leslie O'Donnell, Alessandra Adami, Sudarshan Dayanidhi, Matteo Bertucco
Summary: Individuals with cerebral palsy (CP) have higher energy expenditure and oxygen cost during walking compared to age-matched typically developing (TD) individuals, with a strong relationship across Gross Motor Function Classification System (GMFCS) levels. Oxygen cost is considered the preferred parameter to assess walking efficacy in CP, but there is a knowledge gap in age-related changes of walking efficiency across GMFCS levels. Further longitudinal research is needed to explore the energetics of walking in this population.
Article
Fisheries
Muhammad Riadul Haque Hossainey, Amulya Yaparla, Zarafsha Uzzaman, Tyler Moore, Leon Grayfer
Summary: Comparisons between tadpole and frog immune cells reveal cytological and transcriptional differences, suggesting distinct roles in host defense and pathogen infection for different developmental stages.
DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Muriel Rigolet, Nicolas Buisine, Marylou Scharwatt, Evelyne Duvernois-Berthet, Daniel R. Buchholz, Laurent M. Sachs
Summary: Thyroid hormones and glucocorticoids play a role in cell-cycle regulation through the joint regulation of genes in the liver of tadpoles.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Toxicology
Douglas J. Fort, M. Annegaaike Leopold, Jeffrey C. Wolf, Kevin J. Todhunter, Peter J. J. M. Weterings
Summary: The present study evaluated the impact of dietary quality on the effects of chemical stressors on premetamorphic development and metamorphosis in tadpoles. The results showed that suboptimal dietary quality negatively affected both growth and metamorphic development, and iodine supplementation only partially compensated for the effects on metamorphosis.
JOURNAL OF APPLIED TOXICOLOGY
(2023)
Article
Biology
Chloe Ramsay, Jason R. Rohr
Summary: Immunity changes through ontogeny and can mediate interactions between co-infecting parasites. Host immunity development alters the host responses to parasite exposures across different life stages. A study conducted on Cuban treefrogs exposed to fungus (Bd) and nematodes (A. hamatospicula) at different life stages found ontogenetic differences in immunity, but no evidence of increased immunosuppression in metamorphic frogs. There was also little evidence of facilitative interactions between the parasites, but Bd infection decreased immunity in metamorphic frogs, making them more susceptible to infection.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Article
Environmental Sciences
Lauris Evariste, Antoine Mottier, Eric Pinelli, Emmanuel Flahaut, Laury Gauthier, Florence Mouchet
Summary: The interest in graphene-based nanomaterials (GBMs) is increasing globally due to their innovative applications, but concerns about their potential adverse effects on the environment and endocrine disruption potential are also growing. A study found that graphene oxide (GO) and reduced graphene oxide (rGO) have different effects on amphibian endocrine systems, with GBMs potentially increasing the bioavailability and toxicity of other pollutants through hormone adsorption. This highlights the need for further research on the environmental impact and potential risks associated with GBMs.
Article
Environmental Sciences
Guo-Hua Ding, Zi-Ying Wang, Jing-Yi Chen, Qian-Qian Wu, Yi-Nan Zhou
Summary: This study assessed the effects of long-term exposure to triphenyl phosphate (TPhP) on Polypedates megacephalus tadpoles and evaluated the potential ecological risks of TPhP in environmentally relevant concentrations. The results showed that TPhP had adverse effects on the growth, locomotion, metamorphosis, and hepatic antioxidants of the tadpoles. The study also demonstrated the correlation between TPhP concentrations and integrated biomarker responses, indicating the ecological risk of waterborne TPhP to amphibian tadpoles.
Article
Ecology
Sarah A. Orlofske, Samuel M. Flaxman, Maxwell B. Joseph, Andy Fenton, Brett A. Melbourne, Pieter T. J. Johnson
JOURNAL OF ANIMAL ECOLOGY
(2018)
Article
Biochemistry & Molecular Biology
S. A. Orlofske, L. K. Belden, W. A. Hopkins
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
(2013)
Article
Zoology
Sarah A. Orlofske, Kristine L. Grayson, William A. Hopkins
Article
Biodiversity Conservation
Richard B. Hartson, Sarah A. Orlofske, Vanessa E. Melin, Robert T. Dillon, Pieter T. J. Johnson
Review
Biodiversity Conservation
Janet Koprivnikar, David J. Marcogliese, Jason R. Rohr, Sarah A. Orlofske, Thomas R. Raffel, Pieter T. J. Johnson
Article
Parasitology
Sarah A. Orlofske, Lisa K. Belden, William A. Hopkins
JOURNAL OF PARASITOLOGY
(2009)
Review
Ecology
Pieter T. J. Johnson, Andrew Dobson, Kevin D. Lafferty, David J. Marcogliese, Jane Memmott, Sarah A. Orlofske, Robert Poulin, David W. Thieltges
TRENDS IN ECOLOGY & EVOLUTION
(2010)
Article
Ecology
Robert C. Jadin, Joseph R. Mihaljevic, Sarah A. Orlofske
ECOLOGY AND EVOLUTION
(2019)
Article
Parasitology
Tyler J. Achatz, Jakson R. Martens, Aneta Kostadinova, Eric E. Pulis, Sarah A. Orlofske, Jeffrey A. Bell, Alan Fecchio, Pablo Oyarzun-Ruiz, Yaroslav Y. Syrota, Vasyl V. Tkach
Summary: In this study, DNA sequences of multiple species of Diplostomidae were obtained and their phylogenetic relationships were analyzed. The results showed that Tylodelphys is not a monophyletic group and confirmed Dolichorchis as a separate genus. The study also suggested multiple definitive host-switching events and a New World origin of Diplostomum and Tylodelphys species.
INTERNATIONAL JOURNAL FOR PARASITOLOGY
(2022)
Article
Ecology
Sarah A. Orlofske, Robert C. Jadin, Daniel L. Preston, Pieter T. J. Johnson
Article
Biochemistry & Molecular Biology
Sang Hyuck Lee, Mi Ae Kim, Young Chang Sohn
Summary: This study characterized the CCAP signaling system in Pacific abalone and revealed its relationship with the calcium/PKC and cAMP/PKA signal transduction pathways. It provides new insights into the evolutionary origins of the NPS and OT/VP signaling systems in protostomes.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
(2024)
Article
Biochemistry & Molecular Biology
Hanna Scheuffele, Erica V. Todd, John A. Donald, Timothy D. Clark
Summary: Global warming is causing an increase in extreme weather events, affecting ecosystems and the behavior of ectotherms. More research is needed to understand the impact of diurnal thermal variability and improve climate change predictions.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
(2024)
Article
Biochemistry & Molecular Biology
Jaakko Haverinen, Ahmed Badr, Markus Eskelinen, Matti Vornanen
Summary: The acclimatization of certain ectothermic vertebrates to winter conditions involves reduced energy consumption, achieved through decreased movement activity, depression of cellular functions, or switching to anaerobic energy production. This study on crucian carp showed that winter-acclimatized fish exhibited lower metabolic rates and a shift to anaerobic energy production during anoxia. Winter dormancy in crucian carp is achieved through active reduction of energy consumption, a slowed metabolic rate, and a direct response to oxygen absence.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
(2024)
Article
Biochemistry & Molecular Biology
Maria Cruz Sueiro, Cynthia A. Awruch, Gustavo M. Somoza, Walter S. Svagelj, Maria G. Palacios
Summary: According to life-history theory, there might be different immunological strategies between reproductive and non-reproductive periods due to limited resources. Our study on two sympatric marine fish species, rockfish and sandperch, found that reproductive individuals showed lower immune function, but higher levels of natural antibodies in rockfish females, compared to their non-reproductive counterparts. On the other hand, reproductively active sandperch males showed lower levels of natural antibodies and higher neutrophil to lymphocyte ratio and spleen index compared to non-reproductive males. The study highlights the species-specific patterns of immunity and the potential influence of resource limitation and abiotic factors on immune trade-offs in fish.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
(2024)
Article
Biochemistry & Molecular Biology
James B. Cummins, Dane A. Crossley II
Summary: This study focuses on cardiovascular development in altricial bird species, which has been less studied compared to precocial species. The researchers investigated the cholinergic and adrenergic receptor mediated control of arterial blood pressure and heart rate in the neotropic cormorant. The findings suggest that both cholinergic and adrenergic tone play a role in cardiovascular regulation in embryonic birds.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
(2024)
Article
Biochemistry & Molecular Biology
Ru Xia, Hong-Kang Liu, Xi-Feng Liu, Xin Deng, Chuan-Jie Qin, Yuan-Fa He, Shi-Mei Lin, Yong-Jun Chen
Summary: This study cloned the genes encoding glucokinase and glucose-6-phosphatase catalytic subunit in largemouth bass, revealing their distribution and transcriptional regulation. The results showed that the functions of G6pc and Gck in LMB were highly conserved in evolution, and the interconversion of glucose and G6P in the liver was well regulated at the transcript level under high starch diet, but a futile cycle was induced after a glucose load.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
(2024)