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Full-Text Articles in Life Sciences
Thermal Stress Responses Of Sodalis Glossinidius, An Indigenous Bacterial Symbiont Of Hematophagous Tsetse Flies, Jose Santinni Roma, Shaina D’Souza, Patrick J. Somers, Leah F. Cabo, Ruhan Farsin, Serap Aksoy, Laura J. Runyen-Janecky, Brian L. Weiss
Thermal Stress Responses Of Sodalis Glossinidius, An Indigenous Bacterial Symbiont Of Hematophagous Tsetse Flies, Jose Santinni Roma, Shaina D’Souza, Patrick J. Somers, Leah F. Cabo, Ruhan Farsin, Serap Aksoy, Laura J. Runyen-Janecky, Brian L. Weiss
Biology Faculty Publications
Tsetse flies (Diptera: Glossinidae) house a taxonomically diverse microbiota that includes environmentally acquired bacteria, maternally transmitted symbiotic bacteria, and pathogenic African trypanosomes. Sodalis glossinidius, which is a facultative symbiont that resides intra and extracellularly within multiple tsetse tissues, has been implicated as a mediator of trypanosome infection establishment in the fly’s gut. Tsetse’s gut-associated population of Sodalis are subjected to marked temperature fluctuations each time their ectothermic fly host imbibes vertebrate blood. The molecular mechanisms that Sodalis employs to deal with this heat stress are unknown. In this study, we examined the thermal tolerance and heat shock response of …
Presence And Distribution Of Leptodactylus Guianensis Heyer And De Sa, 2011 In Colombia: Comparisons With Other Species In The L. Latrans Group., Mariela Osorno Muñoz, Doris L. Gutiérrez-Lamus, Rafael O. De Sá
Presence And Distribution Of Leptodactylus Guianensis Heyer And De Sa, 2011 In Colombia: Comparisons With Other Species In The L. Latrans Group., Mariela Osorno Muñoz, Doris L. Gutiérrez-Lamus, Rafael O. De Sá
Biology Faculty Publications
Leptodactylus guianensis is reported for the first time for Colombia along with a distributional map of the species. The species is the fifth species of the L. latransspecies group documented in the country. Males possess a single, conical and slightly chisel-shaped thumb spine; only three species in the group have a single thumb spine. In collections, specimens of L. guianensis are misidentified as L. macrosternum, L. latrans or L. bolivianus. We provide morphological, colouration and habitat descriptions for where the species occurs in Colombia.
Retinoic Acid Inhibition Impairs Planarian Eye Regeneration, Gabrielle Bennetti, Aaron Corbin-Leftwich, Linda M. Boland, Isaac Skromne
Retinoic Acid Inhibition Impairs Planarian Eye Regeneration, Gabrielle Bennetti, Aaron Corbin-Leftwich, Linda M. Boland, Isaac Skromne
Biology Faculty Publications
Retinoic acid is a known morphogen in regulating animal growth and development. Planaria are a key model system for regeneration and their eyes are a morphological marker of anterior differentiation. We explored the requirement for retinoic acid signaling in the regeneration of body parts in the planaria S. mediterranea using an inhibitor of retinoic acid synthesis, diethylaminobenzaldehyde (DEAB). Whole planaria, soaked in DEAB for three days prior to and five days following amputation, produced trunk and tail fragments with defective anterior regeneration. Following regeneration, up to 80% of posterior fragments developed abnormal eyes. The abnormalities included animals without eyes, with …
Multiple Connections Between Amazonia And Atlantic Forest Shaped The T Phylogenetic And Morphological Diversity Of Chiasmocleis Mehely, 1904 (Anura: Microhylidae: Gastrophryninae), Rafael O. De Sá, João Filipe Riva Tonini, Hannah Van Huss, Alex Long, Travis Cuddy, Mauricio C. Forlani, Pedro L.V. Peloso, Hussam Zaher, Célio F.B. Haddad
Multiple Connections Between Amazonia And Atlantic Forest Shaped The T Phylogenetic And Morphological Diversity Of Chiasmocleis Mehely, 1904 (Anura: Microhylidae: Gastrophryninae), Rafael O. De Sá, João Filipe Riva Tonini, Hannah Van Huss, Alex Long, Travis Cuddy, Mauricio C. Forlani, Pedro L.V. Peloso, Hussam Zaher, Célio F.B. Haddad
Biology Faculty Publications
Chiasmocleis is the most species-rich genus of Neotropical microhylids. Herein, we provide the first comprehensive multilocus phylogeny for the genus, including all but 3 of the 34 recognized species and multiple individuals per species. We discuss cryptic speciation, species discovery, patterns of morphological evolution, and provide a historical biogeographic analysis to account for the current distribution of the genus. Diversification of Chiasmocleis from other New World microhylids began during the Eocene, app. 40 mya, in forested areas, and current diversity seems to be a product of recurrent connections between the Atlantic Forest and Amazonia. Small-sized species evolved independently three times …