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Articles 31 - 60 of 633

Full-Text Articles in Life Sciences

Spatio-Temporal Connectivity Of The Aquatic Microbiome Associated With Cyanobacterial Blooms Along A Great Lake Riverine-Lacustrine Continuum, Sophie Crevecoeur, Thomas A. Edge, Linet Cynthia Watson, Susan B. Watson, Charles W. Greer, Jan J.H. Ciborowski, Ngan Diep, Alice Dove, Kenneth G. Drouillard, Thijs Frenken, Robert Michael Mckay, Arthur Zastepa, Jérôme Comte Feb 2023

Spatio-Temporal Connectivity Of The Aquatic Microbiome Associated With Cyanobacterial Blooms Along A Great Lake Riverine-Lacustrine Continuum, Sophie Crevecoeur, Thomas A. Edge, Linet Cynthia Watson, Susan B. Watson, Charles W. Greer, Jan J.H. Ciborowski, Ngan Diep, Alice Dove, Kenneth G. Drouillard, Thijs Frenken, Robert Michael Mckay, Arthur Zastepa, Jérôme Comte

Great Lakes Institute for Environmental Research Publications

Lake Erie is subject to recurring events of cyanobacterial harmful algal blooms (cHABs), but measures of nutrients and total phytoplankton biomass seem to be poor predictors of cHABs when taken individually. A more integrated approach at the watershed scale may improve our understanding of the conditions that lead to bloom formation, such as assessing the physico-chemical and biological factors that influence the lake microbial community, as well as identifying the linkages between Lake Erie and the surrounding watershed. Within the scope of the Government of Canada’s Genomics Research and Development Initiative (GRDI) Ecobiomics project, we used high-throughput sequencing of the …

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Interactions Between Chytrids Cause Variable Infection Strategies On Harmful Algal Bloom Forming Species, Katelyn M. Mckindles, R. Michael L. Mckay, George S. Bullerjahn, Thijs Frenken Feb 2023

Interactions Between Chytrids Cause Variable Infection Strategies On Harmful Algal Bloom Forming Species, Katelyn M. Mckindles, R. Michael L. Mckay, George S. Bullerjahn, Thijs Frenken

Great Lakes Institute for Environmental Research Publications

Cyanobacteria have a great diversity of natural enemies, such as herbivores and pathogens, including fungal pathogens within the Chytridiomycota (chytrids). While these pathogens have been previously described on a select number of cyanobacterial hosts and are suspected to play a significant ecological role, little is understood about species interactions and how competition between parasites can affect epidemic development and bloom formation. Here, three Planktothrix agardhii isolates from Sandusky Bay, Lake Erie (OH, USA) were challenged in monoculture and polyculture against infection by three isolates (C1, C2, C10) of their obligate chytrid fungal pathogen, Rhizophydiales sp. The chytrid isolates were inoculated …

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A Systematic Review Of Snake Translocations To Identify Potential Tactics For Reducing Postrelease Effects, Jonathan D. Choquette, Jacqueline D. Litzgus, Joanne X.Y. Gui, Trevor E. Pitcher Feb 2023

A Systematic Review Of Snake Translocations To Identify Potential Tactics For Reducing Postrelease Effects, Jonathan D. Choquette, Jacqueline D. Litzgus, Joanne X.Y. Gui, Trevor E. Pitcher

Integrative Biology Publications

Advancements in the field of reintroduction biology are needed, but understanding of how to effectively conduct translocations, particularly with snakes, is lacking. We conducted a systematic review of snake translocation studies to identify potential tactics for reducing postrelease effects. We included studies on intentional, human-mediated, wild–wild, or captive–wild translocations to any location, regardless of motive or number of snakes translocated. Only studies that presented results for at least 1 of 4 outcomes (movement behavior, site fidelity, survival, or population establishment) were included. We systematically searched 4 databases for published studies and used 5 methods to search the gray literature. Our …

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Alebion Carchariae (Copepod: Caligidae) Host Plasticity And Distribution: A New Host And Locality Record From Ascension Island, Danielle L. Orrell, Jennifer M. Questel, Caitlin A. Smoot, Tiffany Simpson, Nigel E. Hussey Jan 2023

Alebion Carchariae (Copepod: Caligidae) Host Plasticity And Distribution: A New Host And Locality Record From Ascension Island, Danielle L. Orrell, Jennifer M. Questel, Caitlin A. Smoot, Tiffany Simpson, Nigel E. Hussey

Integrative Biology Publications

The first record of the parasite Alebion carchariae in the waters of Ascension Island collected from Galapagos sharks, Carcharhinus galapagensis (Carcharhinidae), is described. No previous record of this parasite exists for Ascension Island, nor have Galapagos sharks previously been listed as a host. Specimens of A. carchariae were identified using morphological techniques and DNA barcoding of the cytochrome c oxidase I subunit (COI) gene. This study provides the first COI barcodes for this species and a brief review of known hosts. We recommend further research to understand the life cycle of this parasite, its plasticity in terms of host/habitat selection, …

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Comparative Metabolomic Analysis Of Exudates Of Microcystin-Producing And Microcystin-Free Microcystis Aeruginosa Strains, Yuan Zhou, Jun Xu, Hugh J. Macisaac, Robert Michael Mckay, Runbing Xu, Ying Pei, Yuanyan Zi, Jiaojiao Li, Yu Qian, Xuexiu Chang Jan 2023

Comparative Metabolomic Analysis Of Exudates Of Microcystin-Producing And Microcystin-Free Microcystis Aeruginosa Strains, Yuan Zhou, Jun Xu, Hugh J. Macisaac, Robert Michael Mckay, Runbing Xu, Ying Pei, Yuanyan Zi, Jiaojiao Li, Yu Qian, Xuexiu Chang

Great Lakes Institute for Environmental Research Publications

Cyanobacterial harmful algal blooms (cHABs) dominated by Microcystis aeruginosa threaten the ecological integrity and beneficial uses of lakes globally. In addition to producing hepatotoxic microcystins (MC), M. aeruginosa exudates (MaE) contain various compounds with demonstrated toxicity to aquatic biota. Previously, we found that the ecotoxicity of MaE differed between MC-producing and MC-free strains at exponential (E-phase) and stationary (S-phase) growth phases. However, the components in these exudates and their specific harmful effects were unclear. In this study, we performed untargeted metabolomics based on liquid chromatography-mass spectrometry to reveal the constituents in MaE of a MC-producing and a MC-free strain at …

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The Circadian Calling Activity Of A Lebinthine Cricket With High-Frequency Calls Is Unaffected By Cicada Choruses In The Day, Ming Kai Tan, Tony Robillard, Hannah Ter Hofstede Jan 2023

The Circadian Calling Activity Of A Lebinthine Cricket With High-Frequency Calls Is Unaffected By Cicada Choruses In The Day, Ming Kai Tan, Tony Robillard, Hannah Ter Hofstede

Integrative Biology Publications

Background: Many factors can influence circadian rhythms in animals. For acoustically communicating species, both abiotic cues (such as light and temperature) and biotic cues (such as the activity of other animals), can influence the timing of signalling activity. Here we compare the 24-h singing activity of the cricket Lebinthus luae in the laboratory and field to assess whether the presence of other singing insects influences circadian rhythm. Methods: Acoustic monitors were placed in four localities in Singapore and the number of L. luae calls were counted for 10 min of each hour. Individuals from the same localities were captured and …

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Investigating The Cut-Off Effect Of N-Alcohols On Lipid Movement: A Biophysical Study, Michael H.K. Nguyen, Dominik Dziura, Mitchell Dipasquale, Stuart R. Castillo, Elizabeth G. Kelley, Drew Marquardt Jan 2023

Investigating The Cut-Off Effect Of N-Alcohols On Lipid Movement: A Biophysical Study, Michael H.K. Nguyen, Dominik Dziura, Mitchell Dipasquale, Stuart R. Castillo, Elizabeth G. Kelley, Drew Marquardt

Chemistry and Biochemistry Publications

Cellular membranes are responsible for absorbing the effects of external perturbants for the cell’s survival. Such perturbants include small ubiquitous molecules like n-alcohols which were observed to exhibit anesthetic capabilities, with this effect tapering off at a cut-off alcohol chain length. To explain this cut-off effect and complement prior biochemical studies, we investigated a series of nalcohols (with carbon lengths 2-18) and their impact on several bilayer properties, including lipid flip-flop, intervesicular exchange, diffusion, membrane bending rigidity and more. To this end, we employed an array of biophysical techniques such as time-resolved small angle neutron scattering (TRSANS), small angle X-ray …

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Targeting A Free Viral Fraction Enhances The Early Alert Potential Of Wastewater Surveillance For Sars-Cov-2: A Methods Comparison Spanning The Transition Between Delta And Omicron Variants In A Large Urban Center, Liang Zhao, Qiudi Geng, Ryland Corchis-Scott, Robert Michael Mckay, John Norton, Irene Xagoraraki Jan 2023

Targeting A Free Viral Fraction Enhances The Early Alert Potential Of Wastewater Surveillance For Sars-Cov-2: A Methods Comparison Spanning The Transition Between Delta And Omicron Variants In A Large Urban Center, Liang Zhao, Qiudi Geng, Ryland Corchis-Scott, Robert Michael Mckay, John Norton, Irene Xagoraraki

Great Lakes Institute for Environmental Research Publications

Introduction: Wastewater surveillance has proven to be a valuable approach to monitoring the spread of SARS-CoV-2, the virus that causes Coronavirus disease 2019 (COVID-19). Recognizing the benefits of wastewater surveillance as a tool to support public health in tracking SARS-CoV-2 and other respiratory pathogens, numerous wastewater virus sampling and concentration methods have been tested for appropriate applications as well as their significance for actionability by public health practices. Methods: Here, we present a 34-week long wastewater surveillance study that covers nearly 4 million residents of the Detroit (MI, United States) metropolitan area. Three primary concentration methods were compared with respect …

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Multi-Year Molecular Quantification And ‘Omics Analysis Of Planktothrix-Specific Cyanophage Sequences From Sandusky Bay, Lake Erie, Katelyn M. Mckindles, Makayla Manes, Michelle Neudeck, Robert Michael Mckay, George S. Bullerjahn Jan 2023

Multi-Year Molecular Quantification And ‘Omics Analysis Of Planktothrix-Specific Cyanophage Sequences From Sandusky Bay, Lake Erie, Katelyn M. Mckindles, Makayla Manes, Michelle Neudeck, Robert Michael Mckay, George S. Bullerjahn

Great Lakes Institute for Environmental Research Publications

Introduction: Planktothrix agardhii is a microcystin-producing cyanobacterium found in Sandusky Bay, a shallow and turbid embayment of Lake Erie. Previous work in other systems has indicated that cyanophages are an important natural control factor of harmful algal blooms. Currently, there are few cyanophages that are known to infect P. agardhii, with the best-known being PaV-LD, a tail-less cyanophage isolated from Lake Donghu, China. Presented here is a molecular characterization of Planktothrix specific cyanophages in Sandusky Bay. Methods and Results: Putative Planktothrix-specific viral sequences from metagenomic data from the bay in 2013, 2018, and 2019 were identified by two approaches: homology …

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Actionable Wastewater Surveillance: Application To A University Residence Hall During The Transition Between Delta And Omicron Resurgences Of Covid-19, Ryland Corchis-Scott, Qiudi Geng, Abdul Monem Al Riahi, Amr Labak, Ana Podadera, Kenneth K.S. Ng, Lisa A. Porter, Yufeng Tong, Jess C. Dixon, Sherri Lynne Menard, Rajesh Seth, R. Michael Mckay Jan 2023

Actionable Wastewater Surveillance: Application To A University Residence Hall During The Transition Between Delta And Omicron Resurgences Of Covid-19, Ryland Corchis-Scott, Qiudi Geng, Abdul Monem Al Riahi, Amr Labak, Ana Podadera, Kenneth K.S. Ng, Lisa A. Porter, Yufeng Tong, Jess C. Dixon, Sherri Lynne Menard, Rajesh Seth, R. Michael Mckay

Great Lakes Institute for Environmental Research Publications

Wastewater surveillance has gained traction during the COVID-19 pandemic as an effective and non-biased means to track community infection. While most surveillance relies on samples collected at municipal wastewater treatment plants, surveillance is more actionable when samples are collected “upstream” where mitigation of transmission is tractable. This report describes the results of wastewater surveillance for SARS-CoV-2 at residence halls on a university campus aimed at preventing outbreak escalation by mitigating community spread. Another goal was to estimate fecal shedding rates of SARS-CoV-2 in a non-clinical setting. Passive sampling devices were deployed in sewer laterals originating from residence halls at a …

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On Validating A Generic Camera-Based Blink Detection System For Cognitive Load Assessment, Francesco Biondi, Frida Grad, Prarthana Pillai, Balakumar Balasingam Dr. Jan 2023

On Validating A Generic Camera-Based Blink Detection System For Cognitive Load Assessment, Francesco Biondi, Frida Grad, Prarthana Pillai, Balakumar Balasingam Dr.

Human Kinetics Publications

Detecting the human operator's cognitive state is paramount in settings wherein maintaining optimal workload is necessary for task performance. Blink rate is an established metric of cognitive load, with a higher blink frequency being observed under conditions of greater workload. Measuring blink rate requires the use of eye-trackers which limits the adoption of this metric in the real-world. The authors aim to investigate the effectiveness of using a generic camera-based system as a way to assess the user's cognitive load during a computer task. Participants completed a mental task while sitting in front of a computer. Blink rate was recorded …

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Anthropogenic Land Uses Influence Stream Dissolved Organic Matter Quality More Than Decomposition Rates And Macroinvertebrate Diversity, Shayenna Nolan, Alyssa Alves Frazao, J D. Hosen, Catherine Febria Jan 2023

Anthropogenic Land Uses Influence Stream Dissolved Organic Matter Quality More Than Decomposition Rates And Macroinvertebrate Diversity, Shayenna Nolan, Alyssa Alves Frazao, J D. Hosen, Catherine Febria

Integrative Biology Publications

In the era of the Anthropocene, streams and rivers are among the most heavily impacted ecosystems due to the influence of catchment land use on stream water quality and ecological condition. In practice, structural and functional indicators collected by biomonitoring programs are underused and thus limited in their ability to offer practical insight into functional-based restoration approaches. Here we applied a novel combination of indicators—cotton strip decomposition, benthic invertebrate sampling together with dissolved organic matter (DOM) composition — to determine if streams highly impacted by urbanized and agricultural land use across Windsor-Essex (southwestern Ontario, Canada) were consistent across season, anthropogenic …

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Quiet In The Nest: The Nest Environment Attenuates Song In A Grassland Songbird, Sarah L. Dobney, Mikayla M.K. Bornais, D. Ryan Norris, Amy E.M. Newman, Heather Williams, Stéphanie M. Doucet, Daniel J. Mennill Jan 2023

Quiet In The Nest: The Nest Environment Attenuates Song In A Grassland Songbird, Sarah L. Dobney, Mikayla M.K. Bornais, D. Ryan Norris, Amy E.M. Newman, Heather Williams, Stéphanie M. Doucet, Daniel J. Mennill

Integrative Biology Publications

The nest environment may limit the ability of nest-bound birds to hear sounds from the outside world. In vocal learning species, such as humans and songbirds, it is vital for young animals to hear the voices of conspecific animals early in life. In songbirds, nest structure varies considerably across species, and the resulting impact on sound transmission may have consequences for vocal learning in nestlings. In this study, we tested the hypothesis that the nest environment attenuates song of Savannah Sparrows (Passerculus sandwichensis), grassland songbirds that build nests on the ground under cover of dense vegetation. We recorded live Savannah …

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Alphaherpesvirus Infection In A Free-Ranging Narwhal Monodon Monoceros From Arctic Canada, Ole Nielsen, Thaís C.S. Rodrigues, Marianne Marcoux, Karine Béland, Kuttichantran Subramaniam, Stéphane Lair, Nigel E. Hussey, Thomas B. Waltzek Jan 2023

Alphaherpesvirus Infection In A Free-Ranging Narwhal Monodon Monoceros From Arctic Canada, Ole Nielsen, Thaís C.S. Rodrigues, Marianne Marcoux, Karine Béland, Kuttichantran Subramaniam, Stéphane Lair, Nigel E. Hussey, Thomas B. Waltzek

Integrative Biology Publications

We report the detection of an alphaherpesvirus infecting an adult female narwhal Monodon monoceros captured live during a tagging project in Tremblay Sound, Nunavut, Canada, in August 2018. The individual had 2 open wounds on the dorsum but appeared in good overall health. A blowhole swab was collected, and subsequent virus isolation was performed using a beluga whale primary cell line. Non-syncytial cytopathic effects were seen, in contrast to syncytial cytopathic effects described for monodontid alphaherpesvirus 1 (MoAHV1) isolates previously recovered from beluga whales Delphinapterus leucas from Alaska, USA, and the Northwest Territories, Canada. Next-generation sequencing was performed on a …

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One Informs The Other: Unionid Species At Risk And Benthic Macroinvertebrate Community Monitoring Data Are Complementary, Roland A. Eveleens, Todd J. Morris, Daelyn A. Woolnough, Catherine M. Febria Jan 2023

One Informs The Other: Unionid Species At Risk And Benthic Macroinvertebrate Community Monitoring Data Are Complementary, Roland A. Eveleens, Todd J. Morris, Daelyn A. Woolnough, Catherine M. Febria

Integrative Biology Publications

Benthic macroinvertebrate communities, which include unionid freshwater mussels, enhance the health of river ecosystems. Human impacts have driven declines within freshwater mussel communities and due to their complex life cycles, mussel recovery efforts are complex. In Canada, conservation of imperiled species has focused on biodiversity hotspots such as the Sydenham River in the Laurentian Great Lakes Basin. In practice, species conservation and habitat monitoring are siloed between federal agencies and local conservation authorities, limiting the potential for alignment of conservation policy and practice. Here we bring together federal, local, and our own survey data to explore patterns of co-occurrences between …

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Predator–Prey Interactions Between Gleaning Bats And Katydids, Hannah M. Ter Hofstede, Paul A. Faure Jan 2023

Predator–Prey Interactions Between Gleaning Bats And Katydids, Hannah M. Ter Hofstede, Paul A. Faure

Integrative Biology Publications

Bats are voracious predators of insects, and many insects have ears sensitive to the high-frequency echolocation calls of bats. Eared insects show a variety of defences when they detect bat echolocation calls. Professor Brock Fenton was an early contributor to the field of bat–insect interactions, inspiring many students to pursue investigations that have advanced our understanding of the relationship between predators and prey. Reflecting on the integrative nature of Dr. Fenton’s research, this review highlights research on the evolutionary arms race between gleaning insectivorous bats and katydid prey. Studies on this system have enhanced the field of sensory ecology by …

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Guanidinium–Amino Acid Hydrogen-Bonding Interactions In Protein Crystal Structures: Implications For Guanidinium-Induced Protein Denaturation, Indu Negi, Raman Jangra, Amit Gharu, John F. Trant, Purshotam Sharma Dec 2022

Guanidinium–Amino Acid Hydrogen-Bonding Interactions In Protein Crystal Structures: Implications For Guanidinium-Induced Protein Denaturation, Indu Negi, Raman Jangra, Amit Gharu, John F. Trant, Purshotam Sharma

Chemistry and Biochemistry Publications

In the present work, 86 available high resolution X-ray structures of proteins that contain one or more guanidinium ions (Gdm+) are analyzed for the distribution and nature of noncovalent interactions between Gdm+ and amino-acid residues. A total of 1044 hydrogen-bonding interactions were identified, of which 1039 are N–H⋯O, and five are N–H⋯N. Acidic amino acids are more likely to interact with Gdm+ (46% of interactions, 26% Asp and 20% Glu), followed by Pro (19% of interactions). DFT calculations on the identified Gdm+–amino acid hydrogen-bonded pairs reveal that although Gdm+ interacts primarily with the backbone amides of nonpolar amino acids, Gdm+ …

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Combining Telemetry And Fisheries Data To Quantify Species Overlap And Evaluate Bycatch Mitigation Strategies In An Emergent Canadian Arctic Fishery, Daniel J. Madigan, Brynn M. Devine, Sam B. Weber, Angela L. Young, Nigel E. Hussey Dec 2022

Combining Telemetry And Fisheries Data To Quantify Species Overlap And Evaluate Bycatch Mitigation Strategies In An Emergent Canadian Arctic Fishery, Daniel J. Madigan, Brynn M. Devine, Sam B. Weber, Angela L. Young, Nigel E. Hussey

Integrative Biology Publications

Greenland halibut Reinhardtius hippoglossoides are bottom-dwelling flatfish that support commercial and community fisheries in Baffin Bay, Canada. Recently, exploratory inshore summer fisheries have raised concerns surrounding the bycatch of Greenland sharks Somniosus microcephalus and Arctic skate Amblyraja hyperborea, which are susceptible to overfishing due to their conservative life history traits. To explore fisheries selectivity and opportunities for bycatch mitigation, we combined pop-up satellite archival tags (PSATs) and fisheries data to assess habitat overlap and catch trends across these 3 species. PSAT data showed variable inter-specific overlap, with Greenland sharks primarily inhabiting depths (725 ± 193 m), Greenland halibut inhabiting a …

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A Colonial-Nesting Seabird Shows No Heart-Rate Response To Drone-Based Population Surveys, Erica A. Geldart, Andrew F. Barnas, Christina A.D. Semeniuk, H. Grant Gilchrist, Christopher M. Harris, Oliver P. Love Dec 2022

A Colonial-Nesting Seabird Shows No Heart-Rate Response To Drone-Based Population Surveys, Erica A. Geldart, Andrew F. Barnas, Christina A.D. Semeniuk, H. Grant Gilchrist, Christopher M. Harris, Oliver P. Love

Great Lakes Institute for Environmental Research Publications

Aerial drones are increasingly being used as tools for ecological research and wildlife monitoring in hard-to-access study systems, such as in studies of colonial-nesting birds. Despite their many advantages over traditional survey methods, there remains concerns about possible disturbance effects that standard drone survey protocols may have on bird colonies. There is a particular gap in the study of their influence on physiological measures of stress. We measured heart rates of incubating female common eider ducks (Somateria mollissima) to determine whether our drone-based population survey affected them. To do so, we used heart-rate recorders placed in nests to quantify their …

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Breeding Stage And Tissue Isotopic Consistency Suggests Colony-Level Flexibility In Niche Breadth Of An Arctic Marine Bird, Kyle J.L. Parkinson, Holly L. Hennin, H. Grant Gilchrist, Keith A. Hobson, Nigel E. Hussey, Oliver P. Love Dec 2022

Breeding Stage And Tissue Isotopic Consistency Suggests Colony-Level Flexibility In Niche Breadth Of An Arctic Marine Bird, Kyle J.L. Parkinson, Holly L. Hennin, H. Grant Gilchrist, Keith A. Hobson, Nigel E. Hussey, Oliver P. Love

Integrative Biology Publications

Organisms must overcome environmental limitations to optimize their investment in life history stages to maximize fitness. Human-induced climate change is generating increasingly variable environmental conditions, impacting the demography of prey items and, therefore, the ability of consumers to successfully access resources to fuel reproduction. While climate change effects are especially pronounced in the Arctic, it is unknown whether organisms can adjust foraging decisions to match such changes. We used a 9-year blood plasma δ13C and δ15N data set from over 700 pre-breeding Arctic common eiders (Somateria mollissima) to assess breeding-stage and inter-annual variation in isotopic niche, and whether inferred trophic …

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Marine Mammal Hotspots Across The Circumpolar Arctic, Charmain D. Hamilton, Christian Lydersen, Jon Aars, Mario Acquarone, Todd Atwood, Alastair Baylis, Martin Biuw, Andrei N. Boltunov, Erik W. Born, Peter Boveng, Tanya M. Brown, Michael Cameron, John Citta, Justin Crawford, Rune Dietz, Jim Elias, Steven H. Ferguson, Aaron Fisk, Lars P. Folkow, Kathryn J. Frost Dec 2022

Marine Mammal Hotspots Across The Circumpolar Arctic, Charmain D. Hamilton, Christian Lydersen, Jon Aars, Mario Acquarone, Todd Atwood, Alastair Baylis, Martin Biuw, Andrei N. Boltunov, Erik W. Born, Peter Boveng, Tanya M. Brown, Michael Cameron, John Citta, Justin Crawford, Rune Dietz, Jim Elias, Steven H. Ferguson, Aaron Fisk, Lars P. Folkow, Kathryn J. Frost

Integrative Biology Publications

Aim: Identify hotspots and areas of high species richness for Arctic marine mammals. Location: Circumpolar Arctic. Methods: A total of 2115 biologging devices were deployed on marine mammals from 13 species in the Arctic from 2005 to 2019. Getis-Ord Gi* hotspots were calculated based on the number of individuals in grid cells for each species and for phylogenetic groups (nine pinnipeds, three cetaceans, all species) and areas with high species richness were identified for summer (Jun-Nov), winter (Dec-May) and the entire year. Seasonal habitat differences among species’ hotspots were investigated using Principal Component Analysis. Results: Hotspots and areas with high …

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Correction: Home Sweet Home: Spatiotemporal Distribution And Site Fidelity Of The Reef Manta Ray (Mobula Alfredi) In Dungonab Bay, Sudan (Movement Ecology, (2022), 10, 1, (22), 10.1186/S40462-022-00314-9), Anna M. Knochel, Nigel E. Hussey, Steven T. Kessel, Camrin D. Braun, Jesse E.M. Cochran, Graham Hill, Rebecca Klaus, Tarik Checkchak, Nasereldin M. Elamin El Hassen, Mohammed Younnis, Michael L. Berumen Dec 2022

Correction: Home Sweet Home: Spatiotemporal Distribution And Site Fidelity Of The Reef Manta Ray (Mobula Alfredi) In Dungonab Bay, Sudan (Movement Ecology, (2022), 10, 1, (22), 10.1186/S40462-022-00314-9), Anna M. Knochel, Nigel E. Hussey, Steven T. Kessel, Camrin D. Braun, Jesse E.M. Cochran, Graham Hill, Rebecca Klaus, Tarik Checkchak, Nasereldin M. Elamin El Hassen, Mohammed Younnis, Michael L. Berumen

Integrative Biology Publications

Following publication of the original article [1], it was noted that due to a typesetting error, a duplicated version of Figure 6 was published as Figure 5. The correct Figure 5 has been included in this Correction and the original article has been corrected. The publisher apologises to the authors and readers for the inconvenience caused by the error.

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Cumulative Cultural Evolution And Mechanisms For Cultural Selection In Wild Bird Songs, Heather Williams, Andrew Scharf, Anna R. Ryba, D. Ryan Norris, Daniel J. Mennill, Amy E.M. Newman, Stéphanie M. Doucet, Julie C. Blackwood Dec 2022

Cumulative Cultural Evolution And Mechanisms For Cultural Selection In Wild Bird Songs, Heather Williams, Andrew Scharf, Anna R. Ryba, D. Ryan Norris, Daniel J. Mennill, Amy E.M. Newman, Stéphanie M. Doucet, Julie C. Blackwood

Integrative Biology Publications

Cumulative cultural evolution, the accumulation of sequential changes within a single socially learned behaviour that results in improved function, is prominent in humans and has been documented in experimental studies of captive animals and managed wild populations. Here, we provide evidence that cumulative cultural evolution has occurred in the learned songs of Savannah sparrows. In a first step, “click trains” replaced “high note clusters” over a period of three decades. We use mathematical modelling to show that this replacement is consistent with the action of selection, rather than drift or frequency-dependent bias. Generations later, young birds elaborated the “click train” …

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Home Sweet Home: Spatiotemporal Distribution And Site Fidelity Of The Reef Manta Ray (Mobula Alfredi) In Dungonab Bay, Sudan, Anna M. Knochel, Nigel E. Hussey, Steven T. Kessel, Camrin D. Braun, Jesse E.M. Cochran, Graham Hill, Rebecca Klaus, Tarik Checkchak, Nasereldin M. Elamin El Hassen, Mohammed Younnis, Michael L. Berumen Dec 2022

Home Sweet Home: Spatiotemporal Distribution And Site Fidelity Of The Reef Manta Ray (Mobula Alfredi) In Dungonab Bay, Sudan, Anna M. Knochel, Nigel E. Hussey, Steven T. Kessel, Camrin D. Braun, Jesse E.M. Cochran, Graham Hill, Rebecca Klaus, Tarik Checkchak, Nasereldin M. Elamin El Hassen, Mohammed Younnis, Michael L. Berumen

Integrative Biology Publications

Background: Reef manta ray (Mobula alfredi) populations along the Northeastern African coastline are poorly studied. Identifying critical habitats for this species is essential for future research and conservation efforts. Dungonab Bay and Mukkawar Island National Park (DMNP), a component of a UNESCO World Heritage Site in Sudan, hosts the largest known M. alfredi aggregation in the Red Sea. Methods: A total of 19 individuals were tagged using surgically implanted acoustic tags and tracked within DMNP on an array of 15 strategically placed acoustic receivers in addition to two offshore receivers. Two of these acoustically monitored M. alfredi were also equipped …

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A Nanodiamond Chemotherapeutic Folate Receptor-Targeting Prodrug With Triggerable Drug Release, Jiangtao Wu, Xiangbin Du, Dongmei Zhang, Jicheng Cui, Xiaoxia Zhang, Xine Duan, John F. Trant, Yingqi Li Nov 2022

A Nanodiamond Chemotherapeutic Folate Receptor-Targeting Prodrug With Triggerable Drug Release, Jiangtao Wu, Xiangbin Du, Dongmei Zhang, Jicheng Cui, Xiaoxia Zhang, Xine Duan, John F. Trant, Yingqi Li

Chemistry and Biochemistry Publications

No abstract provided.

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Decadal Migration Phenology Of A Long-Lived Arctic Icon Keeps Pace With Climate Change, Courtney R. Shuert, Marianne Marcoux, Nigel E. Hussey, Mads Peter Heide-Jørgensen, Rune Dietz, Marie Auger-Méthé Nov 2022

Decadal Migration Phenology Of A Long-Lived Arctic Icon Keeps Pace With Climate Change, Courtney R. Shuert, Marianne Marcoux, Nigel E. Hussey, Mads Peter Heide-Jørgensen, Rune Dietz, Marie Auger-Méthé

Integrative Biology Publications

Animals migrate in response to seasonal environments, to reproduce, to benefit from resource pulses, or to avoid fluctuating hazards. Although climate change is predicted to modify migration, only a few studies to date have demonstrated phenological shifts in marine mammals. In the Arctic, marine mammals are considered among the most sensitive to ongoing climate change due to their narrow habitat preferences and long life spans. Longevity may prove an obstacle for species to evolutionarily respond. For species that exhibit high site fidelity and strong associations with migration routes, adjusting the timing of migration is one of the few recourses available …

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Vitamin E Does Not Disturb Polyunsaturated Fatty Acid Lipid Domains, Mitchell Dipasquale, Michael H.L. Nguyen, Stuart R. Castillo, Isabelle J. Dib, Elizabeth G. Kelley, Drew Marquardt Nov 2022

Vitamin E Does Not Disturb Polyunsaturated Fatty Acid Lipid Domains, Mitchell Dipasquale, Michael H.L. Nguyen, Stuart R. Castillo, Isabelle J. Dib, Elizabeth G. Kelley, Drew Marquardt

Chemistry and Biochemistry Publications

The function of vitamin E in biomembranes remains a prominent topic of discussion. As its limitations as an antioxidant persist and novel functions are discovered, our understanding of the role of vitamin E becomes increasingly enigmatic. As a group of lipophilic molecules (tocopherols and tocotrienols), vitamin E has been shown to influence the properties of its host membrane, and a wealth of research has connected vitamin E to polyunsaturated fatty acid (PUFA) lipids. Here, we use contrast-matched small-angle neutron scattering and differential scanning calorimetry to integrate these fields by examining the influence of vitamin E on lipid domain stability in …

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Technoscience And The Modernization Of Freshwater Fisheries Assessment And Management, S. J. Cooke, M. F. Docker, N. E. Mandrak, N. Young, D. D. Heath, K. M. Jeffries, A. Howarth, J. W. Brownscombe, J. Livernois, C. A.D. Semeniuk, P. A. Venturelli, A. J. Danylchuk, R. J. Lennox, I. Jarić, A. T. Fisk, C. S. Vandergoot, J. R. Britton, A. M. Muir Nov 2022

Technoscience And The Modernization Of Freshwater Fisheries Assessment And Management, S. J. Cooke, M. F. Docker, N. E. Mandrak, N. Young, D. D. Heath, K. M. Jeffries, A. Howarth, J. W. Brownscombe, J. Livernois, C. A.D. Semeniuk, P. A. Venturelli, A. J. Danylchuk, R. J. Lennox, I. Jarić, A. T. Fisk, C. S. Vandergoot, J. R. Britton, A. M. Muir

Great Lakes Institute for Environmental Research Publications

Inland fisheries assessment and management are challenging given the inherent complexity of working in diverse habitats (e.g., rivers, lakes, wetlands) that are dynamic on organisms that are often cryptic and where fishers are often highly mobile. Yet, technoscience is offering new tools that have the potential to reimagine how inland fisheries are assessed and managed. So-called “technoscience” refers to instances in which science and technology unfurl together, offering novel ways of spurring and achieving meaningful change. This paper considers the role of technoscience and its potential for modernizing the assessment and management of inland fisheries. It first explores technoscience and …

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Empirically Testing The Influence Of Light Regime On Diel Activity Patterns In A Marine Predator Reveals Complex Interacting Factors Shaping Behaviour, Luke Storrie, Nigel E. Hussey, Shannon A. Macphee, Greg O'Corry-Crowe, John Iacozza, David G. Barber, Lisa L. Loseto Nov 2022

Empirically Testing The Influence Of Light Regime On Diel Activity Patterns In A Marine Predator Reveals Complex Interacting Factors Shaping Behaviour, Luke Storrie, Nigel E. Hussey, Shannon A. Macphee, Greg O'Corry-Crowe, John Iacozza, David G. Barber, Lisa L. Loseto

Integrative Biology Publications

Diel cycles in marine predator diving behaviour centre around the light-mediated diel vertical migration (DVM) of prey, and are considered critical for optimizing foraging and limiting competition across global seascapes. Yet, our understanding of predator diel behaviour is based primarily on examining relative depth usage between constant day/night cycles with no formal investigation of how varying light regimes interact with abiotic factors to shape diel activity. The extreme seasonal light regimes (midnight sun, polar night, day/night cycle) in the Arctic provide a unique natural experimental setting to empirically investigate the occurrence and intensity of diel behaviour in marine predators relative …

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Multi-Year Acoustic Tracking Reveals Transient Movements, Recurring Hotspots, And Apparent Seasonality In The Coastal-Offshore Presence Of Greenland Sharks (Somniosus Microcephalus), Jena E. Edwards, Kevin J. Hedges, Steven T. Kessel, Nigel E. Hussey Sep 2022

Multi-Year Acoustic Tracking Reveals Transient Movements, Recurring Hotspots, And Apparent Seasonality In The Coastal-Offshore Presence Of Greenland Sharks (Somniosus Microcephalus), Jena E. Edwards, Kevin J. Hedges, Steven T. Kessel, Nigel E. Hussey

Integrative Biology Publications

Variable movement strategies can complicate the conservation and management of mobile species. Given its extreme life history traits as a long-lived, deep-water species, the Greenland shark (Somniosus microcephalus) is vulnerable to fisheries bycatch, but little is known over its long-term movements across a spatially and seasonally variable Arctic environment. To address this knowledge gap, the movements of Greenland sharks in coastal fjords and offshore waters of Baffin Bay were examined using seven years of acoustic telemetry data. Seasonal patterns in broad-scale movements and inshore-offshore connectivity were compared among 155 sharks (101 males, 54 females [mean LT = 2.65 ± 0.48 …

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