Life Sciences Commons^™

Resource Assessment Report No. 03: Gascoyne Demersal Scalefish Resource 2024 Assessment, Emily A. Fisher, Rachel Marks, Sybrand A. Hesp, Ainslie Denham, Gary Jackson, David V. Fairclough

Resource Assessment Reports

The Gascoyne Demersal Scalefish Resource (GDSR) comprises over 80 species inhabiting inshore (20-250 m deep) and offshore ( > 250 m deep) waters in the Gascoyne Coast Bioregion (GCB; south of Onslow to north of Kalbarri). The GDSR is primarily targeted by commercial, charter and recreational boat-based line fishers. Snapper and Goldband Snapper are the indicator species selected for monitoring and assessing the status of the inshore suite of the GDSR, while Ruby Snapper and Greybanded Grouper are the indicators for the offshore suite.

Periodic assessments of GDSR indicator species demonstrated that historical fishing of Snapper led to stocks being below …

Resource Assessment Report No. 04: North Coast Demersal Scalefish Resource - Kimberley 2025 Assessment, Fabian Trinnie, Rubie Evans-Powell, Ainslie Denham, Sybrand A. Hesp, Corey Wakefield, Craig L. Skepper, Brett Crisafulli, Stephen J. Newman

Resource Assessment Reports

The North Coast Demersal Scalefish Resource (NCDSR) comprises ecological suites of tropical demersal fish species that occur predominantly in inshore waters (20–250 m deep) and offshore waters ( > 250 m deep) of the North Coast Bioregion (NCB). More than 60 demersal species are landed by fisheries operating in the Kimberley and Pilbara regions of the NCB each year, including high-value snappers (Lutjanidae), groupers (Epinephelidae), and emperors (Lethrinidae). As outlined in the NCDSR Harvest Strategy (DPIRD, 2017), the Kimberley resource is currently monitored through annual reviews of total removals and catch rate trends of indicator species, as well as periodic (every …

Comparison Of Gonad Development Between Wild And Hatchery-Bred Silver Therapon Leiopotherapon Plumbeus (Teleostei: Terapontidae) During An Annual Reproductive Cycle, Frolan A. Aya, Samantha Ally V. Bismonte, Mary Jane P. Sayco, Luis Maria B. Garcia

The Philippine Agricultural Scientist

This study compared gonad development between wild-sourced and hatchery-bred silver therapon Leiopotherapon plumbeus. Wild fish from the east bay area of Laguna de Bay, Philippines, and hatchery-bred stocks grown to adult size in outdoor tanks were sampled, and somatic condition, gonad histology, gonadosomatic index (GSI), gut index (GI), and hepatosomatic index (HSI) were assessed during the annual reproductive cycle. Hatcherybred fish condition was generally better than that of wild-sourced fish as a consequence of readily available food resources and environmental conditions. Hatchery-bred male GSIs were significantly higher than in wild male fish in November to February, coinciding with low water …

Options For Fox Control, Department Of Primary Industries And Regional Development, Western Australia

Biosecurity factsheets

Foxes can cause significant losses to some agricultural producers, and they prey on many native animals. The best option is to control foxes before they become a problem. This factsheet explains the available options fox control and when these options should be used

Fisheries Science Update - West Coast Demersal Scalefish Resource - September 2025, Department Of Primary Industries And Regional Development, Western Australia

Fisheries Science Updates

The Department of Primary Industries and Regional Development (DPIRD) monitors the status of Western Australia’s demersal scalefish resources by undertaking regular stock assessments on indicator species.

This summary provides key outcomes of the 2025 assessment of the West Coast Demersal Scalefish Resource (Resource Assessment Report No. 2).

Fisheries Science Update - Gascoyne Demersal Scalefish Resource - September 2025, Department Of Primary Industries And Regional Development, Western Australia

Fisheries Science Updates

The Department of Primary Industries and Regional Development (DPIRD) monitors the status of Western Australia’s demersal scalefish resources by undertaking periodic stock assessments on key indicator species.

This summary provides key outcomes of the 2024 Gascoyne Demersal Scalefish Resource Stock Assessment (Resource Assessment Report No. 3).

Impact Of Retail Display Case On Shelf-Life, Palatability, And Color-Stability Of Fresh Beef Steaks, Stephanie Elizabeth Shimer

Graduate Theses and Dissertations

The objective of the study was to determine: the impact of two retail display cases, three beef muscles, and three packaging schemes on palatability traits, flavor development, lipid oxidation, objective and subjective evaluation of color stability, and microbial shelf-life. No muscle × package × case × day interactions were observed for any instrumental or panelist color evaluation (P > 0.851). No retail case effect was observed for TBARS, consumer sensory evaluation, or cook loss (P >0.05). A muscle × case × package interaction was observed for L* and b* (P< 0.05). No muscle × case × package observations were observed for shelf-life or palatability analyses (P > 0.05). No significant two-way or three-way interactions were observed for evaluation …

A Pestel-Swot Matrix Analysis Of Sustainable Aquafeed Sector: A Case Of Kenya's Fish Feed Sector, Esther Magondu, Lucy Njogu, Kevin Ouko, Jimmy B. Mboya, Mavindu Muthoka, Rodrigue Yossa, Jonathan Munguti, Mary A. Opiyo, Menaga Meenakshisundaram, Chrysantus M. Tanga, Kevin Obiero

All Peer-Reviewed Publications

Global demand for seafood continues to rise, positioning aquaculture as a critical pathway for improving food security, nutrition, and rural livelihoods. In Kenya, the aquaculture sector remains constrained by structural challenges, with fish feed accounting for 60%–70% of production costs and limiting sectoral growth, particularly for smallholder farmers. This review critically analyzes Kenya's fish feed sector through an integrated PESTEL-SWOT framework, drawing on a scoping review of academic literature, policy reports, and sector development studies. The paper highlights key macro-level drivers, including fragmented policy implementation, dependency on imported ingredients, and climate-related risks, and connects these with internal industry dynamics such …

The Official List Of The Birds Of Nebraska: 2024, Mark A. Brogie

Nebraska Bird Review

The duties of the Nebraska Ornithologists’ Union Records Committee (NOURC 2010) include:

A. The committee shall publish an official list of the birds of Nebraska.
B. The official list will include all those species whose occurrence has been reported in Nebraska (and approved by the NOURC).
C. The committee shall keep the official list current.
D. The committee shall publish a list of species for which details are requested with every sighting reported.

The 2024 NOURC has completed the above-described duties, and the following is a result of its endeavors.

The “Official List of the Birds of Nebraska” was last …

First Confirmed Nebraska Breeding Record Of The Common Raven (Corvus Corax) Since The 19th Century, Eugene A. Huryn, Jacob C. Cooper

Nebraska Bird Review

In Nebraska, the Common Raven was likely widespread prior to 1900, being codistributed with the American Bison (Bison bison). Records in this time are spotty, but consistent. Thomas Say reported a nearly fledged brood—the only confirmed breeding record in this period—at Fort Calhoun in Washington County on May 12, 1820. A Common Raven was collected at Fort Randall, on the Missouri River just north of the modern Nebraska–South Dakota border, in the fall of 1857 during the Lieutenant Warren Expeditions. Another specimen, now lost, was collected by J. B. Hasty in 1899 in Arapahoe, Furnas County. Bruner et …

Summer Field Report, June–July 2025, W. Ross Silcock

Nebraska Bird Review

I have mentioned previously the breeding categories that are available to observers in eBird checklists. This database is becoming more comprehensive and useful, and I encourage observers to use this eBird feature.

Usefulness of Merlin-derived checklists continues to be an issue. As an example, Merlin seems to love White-winged Doves; there were 52 undocumented Merlin reports of this species this summer, no doubt some correctly identified and acceptable if observers had taken a minute to add even minimal observation details to support Merlin’s identifications.

A vexing issue for me is determining the status of midsummer (i.e. between spring and fall …

Fisheries Science Update - Pilbara Demersal Scalefish Resource - September 2025, Department Of Primary Industries And Regional Development, Western Australia

Fisheries Science Updates

The Department of Primary Industries and Regional Development (DPIRD) monitors the status of Western Australia’s demersal scalefish resources by undertaking periodic stock assessments on key indicator species.

This summary provides key outcomes of the 2024 assessment of the Pilbara Demersal Scalefish Resource (Fisheries Research Report No. 338).

Resource Assessment Report No. 02: West Coast Demersal Scalefish Resource 2025 Assessment, Emily A. Fisher, David V. Fairclough, Elaine Lek, Jeremy Briggs, Sybrand Alex Hesp, Ainslie Denham

Resource Assessment Reports

The West Coast Demersal Scalefish Resource (WCDSR) comprises over 100 species inhabiting inshore (20-250 m deep) and offshore ( > 250 m deep) waters of the West Coast Bioregion (WCB; north of Kalbarri to east of Augusta). The WCDSR is primarily targeted by commercial, charter and recreational boat-based line fishers, including the commercial West Coast Demersal Scalefish (Interim) Managed Fishery (WCDSIMF). Indicator species selected for monitoring and assessing the status of the inshore suite of the WCDSR include Snapper, WA Dhufish and Baldchin Groper, while indicators for the offshore suite include Hapuku, Bass Groper and Blue-eye Trevalla.

The WCDSR is more …

Understanding Performance And Egg Quality Parameters In A Pastured Egg-Type Poultry Breed, Biswajit Kumar Biswas

Tennessee State University Alumni Theses and Dissertations

This study investigated the effects of rearing systems on performance, egg quality, and ileal amino acid (AA) digestibility in laying hens (65 weeks of age). A total of 66 hens were distributed into two rearing systems: Cage (2 birds/replication, total 12 birds in 6 replications) and pasture (9 birds/replication, total 54 birds in 6 replications), and reared on three levels of energy diet (11.50 MJ/kg, 12.50 MJ/kg, and 13 MJ/kg). The birds were reared from d 1 to 14 (diet 1), d 15 to 28 (diet 2), and d 29-42 (diet 3). The average temperature, wind speed, and humidity were …

Precise Nutrition 2: Regression Equations Using Koh Protein Solubility To Estimate Digestible Lysine And Digestible Arginine In Commercial Lots Of Soybean Meal That Have Undergone Overprocessing Or Auto Combustion, Nelson Ruiz, Carl M. Parsons, Benjamin Parsons

Poultry Science Faculty Publications and Presentations

The objective of this study was to develop regression equations for lysine (Lys) and arginine (Arg) that would allow poultry nutritionists and formulators to estimate amino acid (AA) digestibility in commercial lots of solvent-extracted soybean meal (SBM) using a newly standardized protocol for KOH protein solubility (KOHPS). A total of 82 SBM samples, selected from 100 samples that were analyzed for in vivo AA digestibility, were analyzed for KOHPS. The KOHPS values ranged from 14 to 88 %, while digestible Lys coefficients ranged from 0.47 to 0.96. Digestible Arg coefficients ranged from 0.62 to 0.98. It became evident from total …

Exploring The Role Of Ecological Traits In Shaping Spatial Patterns Of Genetic Diversity, Rilquer Mascarenhas Da Silva

Dissertations, Theses, and Capstone Projects

The field of comparative phylogeography aims at uncovering common underlying causes for shared patterns of diversity and diversification at the population level. However, it is now widely accepted that intraspecific genetic diversity patterns can differ considerably across co-occurring taxa due to ecological processes acting at the population level (and influencing individual movement and abundance). To model the processes underlying lineage diversification and demographic shifts in response to environmental changes, phylogeographers and population geneticists are now faced with the challenge of incorporating measurements of species ecological traits into their molecular studies. This dissertation aimed at investigating how different types of ecological …

Origin And Maintenance Of The Andean Bird Fauna, Elkin A. Tenorio

Dissertations, Theses, and Capstone Projects

The origin and maintenance of the tropical montane diversity have been evaluated over multiple decades using various techniques and perspectives. Despite major progress in understanding phylogenetic relationships, diversification patterns, distributional data, and general ecology in the Andean biota, large gaps in our understanding remain, particularly in the synthesis across scales. To fill these gaps, I aimed to explore patterns and processes that underlie species diversification in birds of the tropical Andes of South America by combining different approaches using phenotypic, phylogenetic, and genomic data in multiple temporal and spatial scales.

In the first chapter, I examined the macroevolutionary patterns of …

A Review Of Androctonus Of Iran, With Redescription Of A. Crassicauda (Olivier, 1807) And A. Orientalis (Birula, 1900) Stat. N., And Descriptions Of Four New Species (Scorpiones: Buthidae), Ersen A. Yağmur, František Kovařík, Victor Fet, Graeme Lowe, Mohammad Moradi, Farzaneh Kalami

Euscorpius

No abstract provided.

Abiotic Factors Influencing Anuran Occupation Of Neotropical Brazilian Caves, Vinícius F. Sperandei, Willian Vaz-Silva, Tejerina-Garro L. Francisco

International Journal of Speleology

Despite increasing research on the Neotropical underground environment, anurans remain poorly understood in this habitat. It was analyzed scientific literature records of anurans in Brazilian natural caves and performed a redundancy analysis (RDA) to identify the environmental, taxonomic, geographic, geological and land-use variables that influence their cave occupancy. It was examined a total of 247 literature records, encompassing 83 species/morphospecies, which revealed distinct cave-dwelling tendencies. Some anuran species occupy caves at altitudes between 5 to 21 meters above sea level (m asl), in areas characterized by rocky outcrops and grassland. Others are associated with caves surrounded by forest, savanna, pasture …

Animal Science News (August 29, 2025), Department Of Animal Science

Animal Science Newsletters

No abstract provided.

Dairy And Food Science Student Newsletter, August 28, 2025, Department Of Dairy And Food Science

Dairy and Food Science Student Newsletter

No abstract provided.

Rna Sequencing-Based Transcriptome Analysis Of Liver In Laying Hens Supplemented With Dietary Probiotic Bacillus Species And Prebiotic Yeast (Saccharomyces Cerevisiae) Cell Walls, Ala E. Abudabos, Zafar M. Hakami, Ali R. Al Sulaiman, Riyadh S. Aljumaah, Valentino Palombo, Mashael R. Aljumaah, Mariasilvia D’Andrea, Abdulrahman S. Alharthi, Rashed A. Alhotan

Food and Animal Sciences Faculty Research

To investigate the impacts of dietary Bacillus-based probiotics and yeast-derived prebiotics on the hepatic transcriptome profile, 500 Hisex White laying hens were randomly allotted into five dietary treatments from 37 to 52 weeks of age: control; control + Bacillus subtilis; control + Bacillus subtilis and Bacillus licheniformis; control + Bacillus coagulans; and control + Saccharomyces cerevisiae yeast cell wall. Transcriptome analysis revealed a substantial number of differentially expressed genes exclusively between the control and prebiotic groups, identifying 2221 genes (FDR ≤ 0.05), with 980 genes upregulated (log2 fold change 0.69 to 24.62) and 1241 downregulated (log2 fold change −0.74 to …

Data For Recreation Effects On Soil Carbon, Biocrust, Soil Stability, And Invasives In Indian Creek, Bears Ears National Monument, Elisabeth M. Currit, Tara B. Bishop, April Hulet, Nathan Allen Currit, Teresa Gomez, Nathan T. Thompson, Shannon Lambson, Heidi Jean Wilding Mann, Evan Miller, Erin Jones, Alexandra Olson, Katherine A. Anselmi, Meredith Murdock, Ella Reid, Kirsten Steele, Indy Lawrence, Neil Hansen

ScholarsArchive Data

This data is about how different types of recreation impact different soil and vegetation properties related to soil carbon in Indian Creek, Bears Ears National Monument. The data was collected from May 2023 to October 2023. It contains plant functional group cover, biocrust cover and type, soil stability, and compaction data for each individual site. There are 5-7 of each site type: camping, foot trails, and motorized offroading trails, and undisturbed sites, with a total of 30 sites. It also contains the code used to analyze the raw data and the figures created.

Effects Of Cryoprotective And Mitochondrial Stabilizing Agents On Vitrified Bovine Oocytes, Allison Hoang

LSU Master's Theses

Oocyte vitrification success is highly dependent on cryoprotectant agent (CPA) choice as well as possible additives that could help preserve mitochondrial membrane potential (mMP), reactive oxygen species (ROS) production, and calcium homeostasis within the cell. It is a delicate balance between levels needed for proper oocyte function and activation and levels needed to induce apoptotic pathways. The results of oocyte cryopreservation determine the eventual oocyte viability and subsequent fertilization and embryo development.

In this study potential permeating cryoprotectant combinations were explored such as ethylene glycol (EG) and propylene glycol (PG) or EG in combination with dimethyl sulfoxide (DMSO). Also, the …

Identification, Abundance, And Behavior Of North American Bobcat (Lynx Rufus) Along Road Mitigation Structures Designed For Endangered Species In South Texas, Victoria Hanley, Kevin W. Ryer, Md. Saydur Rahman, John H. Young Jr., Richard J. Kline

School of Integrative Biological & Chemical Sciences Faculty Publications

Endangered species are increasingly used as the target species in implementing and constructing new wildlife crossing structures (WCS). Highways in South Texas fragment the landscape and result in high road mortality for endangered species such as ocelots (Leopardus pardalis, a medium-sized spotted wild cat). In response, the Texas Department of Transportation constructed nine WCS on Farm-to-Market 106 (FM 106), a road which bisects Laguna Atascosa National Wildlife Refuge in Cameron County, Texas. With ocelots being rare and elusive, bobcats (Lynx rufus) are often used as a surrogate species to study felid behavior at road mitigation structures …

A Comparison Of Diving Behavior Of Goose-Beaked And Dense-Beaked Whales From Tagging Studies In Multiple Ocean Basins, Jay Barlow, Robin W. Baird, Janelle Badger, Gregory S. Schorr, Erin A. Falcone, Shannon N. Coates, Peter L. Tyack, Andrew J. Read, Leigh S. Hickmott, John W. Durban, Diane Claridge, Natacha Aguilar De Soto, Daniel Miranda Gonzalez, Fleur Visser, Machiel G. Oudejans, Stacy L. De Ruiter, David A. Sweeney, Brenda K. Rone, Stephanie L. Watwood

University Faculty Publications and Creative Works

Studies of cetacean diving behavior in multiple locations in different ocean basins allow for an assessment of variability within and among populations. We examine foraging dive behaviors of goose-beaked whales (Ziphius cavirostris) and dense-beaked whales (Mesoplodon densirostris) using data from 132 tagged whales in seven locations in the Pacific and Atlantic Oceans and the Mediterranean Sea. Acoustic recording tags are used to identify foraging dives by the presence of echolocation. For other tag types, foraging dives are identified based on maximum dive depth. Five parameters are used to characterize foraging dives: maximum dive depth, foraging dive duration, dive cycle duration, …

Scorpions Of The Horn Of Africa (Arachnida: Scorpiones). Part Xliii. Lanzatus Fuscipalpis Sp. N. From Ethiopia (Buthidae), František Kovařík, Graeme Lowe

Euscorpius

The rare Horn of Africa buthid genus Lanzatus Kovařík, 2001, known only from Somalia and Somaliland, is recorded for the first time from Ethiopia. We describe a new species Lanzatus fuscipalpis sp. n. fully illustrated with color photographs showing its morphology, habitus, hemispermatophore, and collection sites.

Three New Species Of Androctonus From Morocco (Arachnida: Scorpiones: Buthidae), František Kovařík, Graeme Lowe, František Šťáhlavský

Euscorpius

New data are presented on the taxonomy and distribution of the dark species of the genus Androctonus Ehrenberg, 1828 in Morocco and Western Sahara. Three new species, A. argoubi sp. n., A. stockmanni sp. n., and A. vaneki sp. n. from Morocco are described, characterized by having metasoma I–IV ventrally punctate, a character that is well developed in A. stockmanni sp. n., and A. vaneki sp. n., and weakly developed in A. argoubi sp. n. Dark species from Morocco are compared with A. sergenti Vachon, 1948, and A. bourdoni Vachon, 1948. We describe and compare their …

Economic Analysis Of Stockers Grazing Botanically Diverse Summer Annual Pasture, Kelly M. Mercier, Christopher D. Teutsch, S. Ray Smith, Kenneth H. Burdine, Eric S. Vanzant, Edwin L. Ritchey

Journal of Extension

Economic analyses were performed to determine the feasibility of retaining weaned fall-born calves on summer annual pastures (a monoculture, a 3-species mixture, or a 12-species mixture). Average daily gain was reduced by 0.3 lbs/day in calves grazing the complex mixture in two out of three years. Enterprise budgeting illustrated that retaining calves on summer annual forages was not economical. Two-way net return tables indicated that this scenario would only be profitable when cattle prices are high and pasture establishment costs are low. Extension educators should be sure to emphasize the economic risks when discussing these systems.

Small Meat Processor Needs Are Similar Across Region, Jordan C. Wicks, Alexis Wivell, Thomas Archibald, David Gerrard

Journal of Extension

This needs-based assessment provides insight into the challenges of small meat processors in two regions of the US. On-line surveys were provided to processors and despite regional differences, data show approximately 70% of processors in each state find retention of skilled labor the greatest challenge in maintaining current levels of operation and impede future growth. These findings suggest educational and certification programing may help improve small processor viability and mitigate local food security concerns. Given the disparity in animal production and livestock availability between these diverse states but similarity in responses, we posit this information is translatable across the US.