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Spartan Daily, December 03, 2025, San Jose State University, School Of Journalism And Mass Communications Dec 2025

Spartan Daily, December 03, 2025, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily, 2025

Volume 165, Issue 41


Spartan Daily, December 2, 2025, San Jose State University, School Of Journalism And Mass Communications Dec 2025

Spartan Daily, December 2, 2025, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily, 2025

Volume 165, Issue 40


The (Birthweight) Gains From Trade: Chinese Imports And Infant Health In Sub-Saharan Africa, Jorge M. Aguero, Patralekha Ukil Dec 2025

The (Birthweight) Gains From Trade: Chinese Imports And Infant Health In Sub-Saharan Africa, Jorge M. Aguero, Patralekha Ukil

Faculty Research, Scholarly, and Creative Activity

A growing literature has documented broad negative impacts of Chinese imports to advanced economies, mainly due to the competition of these imports with local production. However, for countries with a smaller manufacturing sector and which have not experienced a structural transformation away from agriculture, Chinese imports could have positive effects. We find evidence supporting this claim using a sample of over 350,000 births from 25 countries in Sub-Sahara Africa. Our identification compares the birthweight of biological siblings born at different levels of Chinese imports to their country. We find that an increase in Chinese imports of $100 (constant USD) is …


Same Data, Different Analysts: Variation In Effect Sizes Due To Analytical Decisions In Ecology And Evolutionary Biology, Elliot Gould, Hannah S. Fraser, Timothy H. Parker, Shinichi Nakagawa, Simon C. Griffith, Peter A. Vesk, Fiona Fidler, Daniel G. Hamilton, Robin N. Abbey-Lee, Jessica K. Abbott, Luis A. Aguirre, Carles Alcaraz, Irith Aloni, Drew Altschul, Kunal Arekar, Jeff W. Atkins, Joe Atkinson, Christopher M. Baker, Meghan Barrett Dec 2025

Same Data, Different Analysts: Variation In Effect Sizes Due To Analytical Decisions In Ecology And Evolutionary Biology, Elliot Gould, Hannah S. Fraser, Timothy H. Parker, Shinichi Nakagawa, Simon C. Griffith, Peter A. Vesk, Fiona Fidler, Daniel G. Hamilton, Robin N. Abbey-Lee, Jessica K. Abbott, Luis A. Aguirre, Carles Alcaraz, Irith Aloni, Drew Altschul, Kunal Arekar, Jeff W. Atkins, Joe Atkinson, Christopher M. Baker, Meghan Barrett

Faculty Research, Scholarly, and Creative Activity

Although variation in effect sizes and predicted values among studies of similar phenomena is inevitable, such variation far exceeds what might be produced by sampling error alone. One possible explanation for variation among results is differences among researchers in the decisions they make regarding statistical analyses. A growing array of studies has explored this analytical variability in different fields and has found substantial variability among results despite analysts having the same data and research question. Many of these studies have been in the social sciences, but one small “many analyst” study found similar variability in ecology. We expanded the scope …


Identifying Climate Refugia And Bright Spots For Highly Mobile Species, Nerea Lezama-Ochoa, Heather Welch, Jennifer A. Brown, Scott R. Benson, Karin A. Forney, Briana Abrahms, Mercedes Pozo Buil, Michael G. Jacox, Barbara A. Muhling, Owen R. Liu, Thomas A. Clay, Ryan Freedman, Danielle Lipski, Steven J. Bograd, Elliott L. Hazen, Stephanie Brodie Dec 2025

Identifying Climate Refugia And Bright Spots For Highly Mobile Species, Nerea Lezama-Ochoa, Heather Welch, Jennifer A. Brown, Scott R. Benson, Karin A. Forney, Briana Abrahms, Mercedes Pozo Buil, Michael G. Jacox, Barbara A. Muhling, Owen R. Liu, Thomas A. Clay, Ryan Freedman, Danielle Lipski, Steven J. Bograd, Elliott L. Hazen, Stephanie Brodie

Faculty Research, Scholarly, and Creative Activity

Climate-driven shifts in species distributions can undermine the effectiveness of protected areas. We present a framework to facilitate climate change adaptation planning by identifying where highly migratory species habitats will persist (climate refugia), emerge (bright spots), disappear (dark spots), or remain unsuitable based on model analysis by 2100. When applied to eight species in the California Current System, we found that, on average, 37% of habitats are expected to be climate refugia, 9% are bright spots, and 13% are dark spots within National Marine Sanctuaries by 2100. Species responses differ: leatherback turtles may find refuge near U.S. coastal waters (18%), …


Topographic And Upwelling Effects On Surface Lagrangian Coherent Structures Of Cape Mendocino, Basil Martin Darby Nov 2025

Topographic And Upwelling Effects On Surface Lagrangian Coherent Structures Of Cape Mendocino, Basil Martin Darby

Master's Theses

The goal of this study is to investigate fine-scale Lagrangian coherent structure (LCS) generation in a coastal upwelling setting with prominent topography using a high-resolution global-ocean circulation model (LLC4320). I examine LCS properties, spatiotemporal evolution and vertical structure, as well as possible connections to submesoscale variability and chlorophyll. The LLC4320 simulation in the Cape Mendocino region is evaluated using high-resolution satellite and other ocean observations. Additionally, this study uses a novel dynamical systems technique by relating the LCS of flow fields to the physical dynamics of the mesoscale-to-submesesoscale transition. It is found that time series of short timescale LCS yield …


Digital Neuropsychology And Social Anxiety: The Effect Of Observer Presence And Personality On Stress And Cognition, Ava M. Dixon Nov 2025

Digital Neuropsychology And Social Anxiety: The Effect Of Observer Presence And Personality On Stress And Cognition, Ava M. Dixon

Master's Theses

This study examined how observer presence and social anxiety influence stress and cognitive performance during neuropsychological assessments, focusing on the potential benefits of unsupervised digital testing environments. Eighty university students were randomly assigned to observed or unobserved digital neuropsychological conditions and completed assessments of social cognition and executive functioning and questionnaires of social anxiety and personality. Participants also completed measures of state anxiety and heart rate variability at baseline and after cognitive tests. The findings indicated that observation led to higher subjective anxiety, but it did not produce significant interactions with social anxiety on stress or cognitive performance. Post-hoc analyses …


“What Are We And What’S Coming Next?”: Queer People’S Experiences During Sociopolitical Unrest In The Us, Ariana Cristal Morales Nov 2025

“What Are We And What’S Coming Next?”: Queer People’S Experiences During Sociopolitical Unrest In The Us, Ariana Cristal Morales

Master's Theses

Queer (lesbian, gay, bisexual, transgender, queer, or other gender and sexual identities) folx have become a major focal point during political elections. As political climates have projected forced attacks towards queer populations, society has followed suit. Investigation on the impacts of such changes towards queer folx is important to uncover, as sociopolitical climates have shifted within the last 10 years in the US. The present study utilizes a phenomenological framework to understand the lived experiences of queer participants living in the US from 2015-2025 during political and social shifts. Semi-structured interviews were utilized to explore 10 queer participant’s lived experience …


Radiation Hardness Study Of Finfet And Gate-All-Around Fet Sram, Albert Lu Nov 2025

Radiation Hardness Study Of Finfet And Gate-All-Around Fet Sram, Albert Lu

Master's Theses

Radiation, such as alpha particles or neutrons, is hard to control and can come from sources such as trace impurities or cosmic rays from space. These can then strike a semiconductor device, such as a Static Random Access Memory (SRAM) cell, and cause the SRAM to have its bit flipped. This bit flip is often just a temporary effect and is thus called a single event upset (SEU). Although it is temporary, a bit flip can cause severe consequences, such as affecting program functionality by causing incorrect data to be used. This is made worse in critical environments that need …


Early Visual Predictors Of Progression To Alzheimer’S Disease And Dementia With Lewy Bodies, Abril Baez Nov 2025

Early Visual Predictors Of Progression To Alzheimer’S Disease And Dementia With Lewy Bodies, Abril Baez

Master's Theses

We examined whether specific visual cognitive skills predict progression from Mild Cognitive Impairment (MCI) to Alzheimer’s disease (AD), or dementia with Lewy bodies (DLB). The Benson Complex Figure Task (BCFT) was used to measure visual perception and construction (copy), and visual memory (recall). National Alzheimer Coordination Center longitudinal dataset included participants who remained stable (MCI-stable; n =2630), progressed to AD (MCI-AD; n =798), or progressed to DLB (MCI-DLB; n =59). Baseline BCFT scores were entered into logistic regression models predicting diagnostic outcome. Impaired copy performance was significantly associated with MCI-DLB (B = 0.79, OR = 2.21, BCa CI [0.26, 1.36], …


Progressive Oxygenation Of The North Atlantic Subpolar Gyre, Jannes Koelling, Andrea J. Fassbender, Alison R. Gray, Gregory C. Johnson, Jonathan D. Sharp, Dustin Carroll Oct 2025

Progressive Oxygenation Of The North Atlantic Subpolar Gyre, Jannes Koelling, Andrea J. Fassbender, Alison R. Gray, Gregory C. Johnson, Jonathan D. Sharp, Dustin Carroll

Faculty Research, Scholarly, and Creative Activity

The subpolar North Atlantic (SPNA) is one of the few regions where the deep ocean is in direct contact with the atmosphere, making it a key location for interior ocean ventilation through gas exchange. We use a novel observation-based data product to analyze large-scale patterns of the air-sea flux of oxygen, finding a mean annual flux of 48.1 (Formula presented.) 14.6 Tmol (Formula presented.) from the atmosphere into the ocean integrated over the SPNA ((Formula presented.) N– (Formula presented.) N). An analysis of a fully-closed oxygen budget from the data-assimilative ECCO-Darwin ocean biogeochemistry model suggests that the net uptake is …


Reproduction And Embryonic Development Of Monkeyface Prickleback Cebidichthys Violaceus In Captivity, Kevin D. Hinterman, Matthew R. Hoehn, Luke D. Gardner, Scott L. Hamilton Oct 2025

Reproduction And Embryonic Development Of Monkeyface Prickleback Cebidichthys Violaceus In Captivity, Kevin D. Hinterman, Matthew R. Hoehn, Luke D. Gardner, Scott L. Hamilton

Faculty Research, Scholarly, and Creative Activity

Understanding the sequence of embryonic and larval development and the factors necessary to induce reproduction in captivity are critical for developing new species for commercial or conservation aquaculture. In this study, we describe the adult reproductive behaviours and development of eggs, embryos and early larvae of captive monkeyface pricklebacks, Cebidicthys violaceus, compared to previously documented wild observations. Eggs were laid in cohesive clutches and guarded by the male parent until hatching began 23 days post fertilization at 13°C. Fertilized eggs were spherical, approximately 1.5 mm in diameter, covered in an opaque chorion, and contained six adhesive pads around the outside. …


Contextualizing Introductory Computer Science: Insights From African Faculty, Ethel Tshukudu, Ismaila Temitayo Sanusi, Oluwakemi Ola, Sally Hamouda, Linda Marshall, Oluwatoyin Adelakun-Adeyemo, Emma R. Dodoo, G. Ayorkor Korsah, Sandani Luvhengo, Jack Parkinson Oct 2025

Contextualizing Introductory Computer Science: Insights From African Faculty, Ethel Tshukudu, Ismaila Temitayo Sanusi, Oluwakemi Ola, Sally Hamouda, Linda Marshall, Oluwatoyin Adelakun-Adeyemo, Emma R. Dodoo, G. Ayorkor Korsah, Sandani Luvhengo, Jack Parkinson

Faculty Research, Scholarly, and Creative Activity

Contextualizing computer science education has been recognized as a key factor in enhancing student engagement and learning outcomes. This study investigates the initial perceptions of university computer science faculty in Africa regarding the benefits, adoption challenges, and institutional support required for the successful integration of contextually relevant materials into introductory computer science (CS1) courses. Faculty then assessed a set of previously developed contextually tailored materials, grounded in Banks' Additive Approach to curriculum reform and aligned to the CS curricula 2023. The research adopted qualitative methods, gathering data through open-ended surveys from 22 CS faculty across 9 African countries. Thematic analysis …


High-Stakes Exams Inflate A Gender Gap And Contribute To Systematic Grading Errors In One Introductory Physics Series, David J. Webb, Cassandra Paul Oct 2025

High-Stakes Exams Inflate A Gender Gap And Contribute To Systematic Grading Errors In One Introductory Physics Series, David J. Webb, Cassandra Paul

Faculty Research, Scholarly, and Creative Activity

Previous research has suggested that changing the percentage of the course grade associated with exam grades in science, technology, engineering, and mathematics courses can change the gender gap in the course. It has also been shown that high-stakes assessments yield the lowest (relative) scores for female students. Previous research by the authors has shown that implementing retake exams can eliminate the gender gap in introductory physics courses. This paper explores several different hypotheses for why retake exams are associated with a zeroed gender gap. Two independent measurements comparing exams with different stakes are used in support of the argument that …


The Symbiotic Harm Of A Criminal Record, Ericka B. Adams, Elsa Y. Chen, Sarah E. Lageson Oct 2025

The Symbiotic Harm Of A Criminal Record, Ericka B. Adams, Elsa Y. Chen, Sarah E. Lageson

Faculty Research, Scholarly, and Creative Activity

Having a criminal record significantly alters a person’s life chances, decreasing their opportunities for employment, housing, student loans, voting, public benefits, and more. The collateral consequences of criminal convictions, or the civil restrictions that follow criminal convictions, are well documented. However, because individuals are connected to families and communities, it is impossible to isolate the effects of punishment to only the persons holding criminal records. Instead, the effects of criminal records might be best understood as a set of symbiotic harms, marked by relational and interdependent effects. Drawing on semi-structured interviews with 59 expungement-eligible persons and 69 community representatives, this …


Integration Of Uav And Remote Sensing Data For Early Diagnosis And Severity Mapping Of Diseases In Maize Crop Through Deep Learning And Reinforcement Learning, Jerry Gao, Krinal Gujarati, Meghana Hegde, Padmini Arra, Sejal Gupta, Neeraja Buch Oct 2025

Integration Of Uav And Remote Sensing Data For Early Diagnosis And Severity Mapping Of Diseases In Maize Crop Through Deep Learning And Reinforcement Learning, Jerry Gao, Krinal Gujarati, Meghana Hegde, Padmini Arra, Sejal Gupta, Neeraja Buch

Faculty Research, Scholarly, and Creative Activity

Highlights: What are the main findings? A framework combining UAV, satellite, and weather data to detect crop diseases. Ensemble deep learning and reinforcement learning improve classification and severity mapping. What is the implication of the main finding? Enables near real-time, scalable crop disease management to reduce yield losses. Early detection and hotspot mapping optimize water and pesticide use for sustainability. Accurate and timely prediction of diseases in water-intensive crops is critical for sustainable agriculture and food security. AI-based crop disease management tools are essential for an optimized approach, as they offer significant potential for enhancing yield and sustainability. This study …


Acceleration Metrics Predict Propulsive Power At Within-Dive Temporal Scales In California Sea Lions, Mason R. Cole, Elizabeth A. Mchuron, Dan P. Costa, Paul J. Ponganis, Birgitte I. Mcdonald Oct 2025

Acceleration Metrics Predict Propulsive Power At Within-Dive Temporal Scales In California Sea Lions, Mason R. Cole, Elizabeth A. Mchuron, Dan P. Costa, Paul J. Ponganis, Birgitte I. Mcdonald

Faculty Research, Scholarly, and Creative Activity

Background: Locomotion can drive variation in an animal’s energy expenditure, but the energetic cost of movement is difficult to measure at fine time scales in free-living animals. The 3 axis acceleration metrics Dynamic Body Acceleration (DBA) and Minimum Specific Acceleration (MSA) are commonly used in biologging studies as a proxy for activity or energy expenditure. These metrics hold potential for relatively simple and affordable estimates of movement-based energy expenditure, but have not been validated for use at fine temporal scales (e.g., within dives) due to logistical limitations of metabolic measurement techniques. Here, we use rates of propulsive power (W kg …


Trajectory Of Tinnitus Distress Across The Covid-19 Pandemic: A Cross-Sectional Analysis Of Self-Reported Symptoms, Anusha Yellamsetty, Mika Shin Oct 2025

Trajectory Of Tinnitus Distress Across The Covid-19 Pandemic: A Cross-Sectional Analysis Of Self-Reported Symptoms, Anusha Yellamsetty, Mika Shin

Faculty Research, Scholarly, and Creative Activity

Purpose: This study aimed to evaluate retrospectively self-reported changes in tinnitus severity and distress associated with the COVID-19 pandemic and vaccination using validated self-report instruments. It further explored patient-reported onset of tinnitus following vaccination, gender differences in symptom severity, and associations with psychological distress. Method: A cross-sectional online survey was completed by 189 adults between December 2023 and April 2024. Participants retrospectively self-reported tinnitus onset and severity before, during, and after the COVID-19 pandemic using the Tinnitus Handicap Inventory (THI) and the Tinnitus Reaction Questionnaire (TRQ). Additional items assessed COVID-19 vaccination history, infection status, and adverse vaccine reactions. Repeated measures …


Full Circle, Full Century: An Interview With Mitsuye Yamada, Noelle Brada-Williams, Elizabeth J. Asborno Oct 2025

Full Circle, Full Century: An Interview With Mitsuye Yamada, Noelle Brada-Williams, Elizabeth J. Asborno

Asian American Literature: Discourses & Pedagogies

No abstract provided.


Spartan Daily, October 7, 2025, San Jose State University, School Of Journalism And Mass Communications Oct 2025

Spartan Daily, October 7, 2025, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily, 2025

Volume 165, Issue 19


Sjsu Erfa News, Fall 2025, San Jose State University, Emeritus And Retired Faculty Association Oct 2025

Sjsu Erfa News, Fall 2025, San Jose State University, Emeritus And Retired Faculty Association

Emeritus and Retired Faculty Association (ERFA) Newsletter

Volume 39, No 1


Machine Learning For Dissolved Oxygen Prediction In The Manawatu River Catchment, New Zealand, Imokhai T. Tenebe, Eunice O. Babatunde, Nkpa M. Ogarekpe, Egbe Etu Etu, Joshua Emakhu, Kindness E. Etu, Obiora B. Ezeudu, Oluwarotimi S. Oladele Oct 2025

Machine Learning For Dissolved Oxygen Prediction In The Manawatu River Catchment, New Zealand, Imokhai T. Tenebe, Eunice O. Babatunde, Nkpa M. Ogarekpe, Egbe Etu Etu, Joshua Emakhu, Kindness E. Etu, Obiora B. Ezeudu, Oluwarotimi S. Oladele

Faculty Research, Scholarly, and Creative Activity

Uncontrolled anthropogenic activities have increased river pollution, resulting in poor water quality and a growing need for continuous monitoring, which is time-consuming and costly. This study evaluated the accuracy of machine learning (ML) models in predicting dissolved oxygen (DO) levels, aiming to reduce field monitoring efforts and minimize the number of measured parameters. Regression models (Huber, Linear, Ridge), Bagging methods (Extra Trees, Random Forest, Decision Trees), and Boosting techniques (Gradient Boosting, Light Gradient Boosting, AdaBoost) were tested using data from three sites in the Manawatu Catchment, New Zealand. Data spanning 1989–2014 included 12 water quality variables and was split into …


Spartan Daily, September 30, 2025, San Jose State University, School Of Journalism And Mass Communications Sep 2025

Spartan Daily, September 30, 2025, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily, 2025

Volume 165, Issue 16


Spartan Daily, September 25, 2025, San Jose State University, School Of Journalism And Mass Communications Sep 2025

Spartan Daily, September 25, 2025, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily, 2025

Volume 165, Issue 15


Novel Biological Prompting Technology: Automatic Directional Control By Eye-Tracking Sensor, Guannan Liu, Justin Wang, Hsiao Chun Wu, Gaojian Huang, Anil Kumar, Yiyan Wu, Shih Yu Chang, Yue Luo Sep 2025

Novel Biological Prompting Technology: Automatic Directional Control By Eye-Tracking Sensor, Guannan Liu, Justin Wang, Hsiao Chun Wu, Gaojian Huang, Anil Kumar, Yiyan Wu, Shih Yu Chang, Yue Luo

Faculty Research, Scholarly, and Creative Activity

Biological prompting or human teleoperation have been appealing to many researchers lately. Hands-free and voice-free command or control of vehicles, aircraft, machines, robots, etc. would provide huge convenience to users and allow them for multi-tasking. In this work, we would like to dedicate to a new biological prompting function, namely automatic directional control using instantaneous eye gaze data. In this work, we would like to investigate how to apply advanced machine-learning models to design novel automatic gaze-direction identification techniques. We explore the difficulty, namely infliction with outliers and variations, in dealing with eye-tracking data and propose to transform the original …


Spartan Daily, September 24, 2025, San Jose State University, School Of Journalism And Mass Communications Sep 2025

Spartan Daily, September 24, 2025, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily, 2025

Volume 165, Issue 12


Gc-Ms-Based Metabolomics For Understanding The Metabolite Profile Of Mopane Worm (Gonimbrasia Belina) And Sorghum (Sorghum Bicolor L), Mpho Sebabiki Maleke, Tumisi Beiri Jeremiah Molelekoa, Jonathan Wilkin, Xi Feng, Moira Ledbetter, Oluwafemi Ayodeji Adebo Sep 2025

Gc-Ms-Based Metabolomics For Understanding The Metabolite Profile Of Mopane Worm (Gonimbrasia Belina) And Sorghum (Sorghum Bicolor L), Mpho Sebabiki Maleke, Tumisi Beiri Jeremiah Molelekoa, Jonathan Wilkin, Xi Feng, Moira Ledbetter, Oluwafemi Ayodeji Adebo

Faculty Research, Scholarly, and Creative Activity

Edible insects are nutritious, having high levels of protein, essential amino acids, healthy fats, vitamins, and minerals. In areas where sorghum is a primary crop, mixing this gluten-free grain with protein-rich insect powder provides a novel approach to making nutrient-rich products. Understanding the sorghum and mopane worm flours' metabolomic changes during bioprocessing can however, enhance their nutritional value and food safety. The research investigated metabolite compounds that are found in raw and processed (fermented, malted (sorghum), and ultrasonicated) mopane worms and sorghum. In the study, sorghum grains were traditionally fermented and malted at 35°C for 48 h and ultrasonicated for …


Transcultural Competence And Empathy In Language Education: Imagining The Unimaginable, Michiko Uryu Sep 2025

Transcultural Competence And Empathy In Language Education: Imagining The Unimaginable, Michiko Uryu

Faculty Research, Scholarly, and Creative Activity

The 2007 MLA report offered guidelines and competencies for foreign language majors at American universities in the age of globalization. The notion of translingual and transcultural competence suggests that today’s foreign language education is not merely a matter of language acquisition, but humanistic learning. The ultimate goal for foreign language learners should be to gain alternative ways of seeing the world, namely, “imagining the unimaginable” (Ozick, 1987). This underscores the central importance of empathy in foreign language education. Yet the true challenge lies in how to assess such an abstract concept. Even eighteen years since its initial publication, the report …


Hemispheric Asymmetry Of Phase Partition In Mixed-Phase Clouds Based On Near Global-Scale Airborne Observations, Ching An Yang, Minghui Diao, Yang Shi, Xiaohong Liu Sep 2025

Hemispheric Asymmetry Of Phase Partition In Mixed-Phase Clouds Based On Near Global-Scale Airborne Observations, Ching An Yang, Minghui Diao, Yang Shi, Xiaohong Liu

Faculty Research, Scholarly, and Creative Activity

Mixed-phase clouds contribute to substantial uncertainties in global climate models due to their complex microphysical properties. Former model evaluations almost exclusively rely on satellite observations to assess cloud phase distributions globally. This study investigated mixed-phase cloud properties using near global-scale in situ observation data sets from 14 flight campaigns in combination with collocated output from a global climate model. The Southern Hemisphere (SH) shows significantly higher occurrence frequencies and higher mass fractions of supercooled liquid water than Northern Hemisphere (NH) based on observations at 0.2 and 100 km horizontal scales. Such hemispheric asymmetry is not captured by the model. The …


Temperature And Pressure Shaped The Evolution Of Antifreeze Proteins In Polar And Deep Sea Zoarcoid Fishes, Samuel N. Bogan, Nathan Surendran, Scott Hotaling, Thomas Desvignes, Iliana Bista, Luana S.F. Lins, Mari H. Eilertsen, Nathalie R. Le François, Tait Algayer, Scott L. Hamilton, Paul B. Frandsen, Federico G. Hoffmann, Joanna L. Kelley Sep 2025

Temperature And Pressure Shaped The Evolution Of Antifreeze Proteins In Polar And Deep Sea Zoarcoid Fishes, Samuel N. Bogan, Nathan Surendran, Scott Hotaling, Thomas Desvignes, Iliana Bista, Luana S.F. Lins, Mari H. Eilertsen, Nathalie R. Le François, Tait Algayer, Scott L. Hamilton, Paul B. Frandsen, Federico G. Hoffmann, Joanna L. Kelley

Faculty Research, Scholarly, and Creative Activity

Antifreeze proteins (AFPs) have enabled teleost fishes to repeatedly colonize polar seas. Four AFP types have convergently evolved in several fish lineages. AFPs inhibit ice crystal growth and lower tissue freezing point. In lineages with AFPs, species inhabiting colder environments may possess more AFP copies. Elucidating how differences in AFP copy number evolve is challenging due to the genes' tandem array structure and consequently poor resolution of these repetitive regions. Here, we explore the evolution of type III AFPs (AFP III) in the globally distributed suborder Zoarcoidei, leveraging six new long-read genome assemblies. Zoarcoidei has fewer genomic resources relative to …