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Bento searches all of the available resources at LSU Libraries. Please note that while Discovery does include Catalog results, the dedicated Catalog search can still be accessed.

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Searches the full-text of research guides published by LSU Libraries. A research guide is a curated, librarian‑built document that pulls together the most important resources for a topic, course, or assignment. It’s designed to help students, faculty, and researchers quickly find high‑quality, relevant information without having to sift through everything on their own.
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Searches the full-text of the Scholarly Repository. The LSU Scholarly Repository collects, preserves, publishes, and makes openly accessible the research and scholarship contributed by LSU faculty, staff, students, and units. Research and scholarly archived materials can include articles, monographs, books, theses & dissertations, audio-visual presentations, working papers, technical reports, conference proceedings, special collections, data, and publicly funded research.
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Discovery

458000
Detecting a Complex of Cryptic Species within Neoechinorhynchus golvani (Acanthocephala: Neoechinorhynchidae) Inferred from ITSs and LSU rDNA Gene Sequences
Neoechinorhynchus golvani is an intestinal parasite of freshwater and brackish water fishes distributed in Mexico. The genetic variability of 40 samples representing 12 populations from north, south, and central Mexico, and 1 from Costa Rica, was estimated by sequencing 2 nuclear genes (ITS1, 5.8S, ITS2, and LSU rDNA, including the domain D2 + D3). The length of both genes ranged from 700 to 779 base pairs (bp) and from 813 to 821 bp, for ITSs and LSU, respectively. The genetic divergence among populations ranged from 19.5 to 35.3% with ITSs and from 9.28 to 19.58% with LSU. Maximum likelihood and maximum parsimony analyses were performed for each data set and also for 2 combined data sets (ITSs + LSU rDNA with and without outgroups), showing strong similarities among trees, with high bootstrap support in all cases. Genetic divergence, in combination with phylogenetic analyses, suggested that the acanthocephalan N. golvani represents a complex of cryptic species, which is composed of at least 3 lineages. The first lineage, corresponding with N. golvani, shows a wide distribution, including localities from northeastern Mexico, southwards through central and southeastern Mexico, and further down to Costa Rica. This lineage is associated with cichlid fishes in strictly freshwater environments. Lineages 2 and 3 are distributed in brackish water systems along the Gulf of Mexico and Pacific slopes, respectively; both are associated with eleotrid fishes, and apparently represent 2 cryptic species. The diversification of the eleotrid and cichlid lineages seems to be the result of independent host-switching events from the ancestral population.
MinION Sequencing of Yeast Mock Communities To Assess the Effect of Databases and ITS-LSU Markers on the Reliability of Metabarcoding Analysis
ABSTRACT Microbial communities play key roles both for humans and the environment. They are involved in ecosystem functions, maintaining their stability, and provide important services, such as carbon cycle and nitrogen cycle. Acting both as symbionts and as pathogens, description of the structure and composition of these communities is important. Metabarcoding uses ribosomal DNA (rDNA) (eukaryotic) or rRNA gene (prokaryotic) sequences for identification of species present in a site and measuring their abundance. This procedure requires several technical steps that could be source of bias producing a distorted view of the real community composition. In this work, we took advantage of an innovative “long-read” next-generation sequencing (NGS) technology (MinION) amplifying the DNA spanning from the internal transcribed spacer (ITS) to large subunit (LSU) that can be read simultaneously in this platform, providing more information than “short-read” systems. The experimental system consisted of six fungal mock communities composed of species present at various relative amounts to mimic natural situations characterized by predominant and low-frequency species. The influence of the sequencing platform (MinION and Illumina MiSeq) and the effect of different reference databases and marker sequences on metagenomic identification of species were evaluated. The results showed that the ITS-based database provided more accurate species identification than LSU. Furthermore, a procedure based on a preliminary identification with standard reference databases followed by the production of custom databases, including only the best outputs of the first step, is proposed. This additional step improved the estimate of species proportion of the mock communities and reduced the number of ghost species not really present in the simulated communities. IMPORTANCE Metagenomic analyses are fundamental in many research areas; therefore, improvement of methods and protocols for the description of microbial communities becomes more and more necessary. Long-read sequencing could be used for reducing biases due to the multicopy nature of rDNA sequences and short-read limitations. However, these novel technologies need to be assessed and standardized with controlled experiments, such as mock communities. The interest behind this work was to evaluate how long reads performed identification and quantification of species mixed in precise proportions and how the choice of database affects such analyses. Development of a pipeline that mitigates the effect of the barcoding sequences and the impact of the reference database on metagenomic analyses can help microbiome studies go one step further.
Phylogenetic Relationships of Palaeacanthocephala (Acanthocephala) Inferred from SSU and LSU rDNA Gene Sequences
The Palaeacanthocephala is traditionally represented by 2 orders, Echinorhynchida and Polymorphida, with 10 and 3 families, respectively. To test the monophyly of the class, these 2 orders, and certain families, phylogenies were inferred using nuclear small-subunit (SSU) and large-subunit (LSU) ribosomal DNA sequences obtained for 29 species representing 10 families, 2 other classes of acanthocephalans, and 3 rotifer outgroups. Phylogenetic relationships were inferred by analyzing combined SSU and LSU sequences using maximum parsimony (MP) and maximum likelihood (ML) methods. Parsimony and ML trees inferred from combined analysis of these rDNA data strongly supported monophyly of Palaeacanthocephala and provided good resolution among species. Neither Polymorphida nor Echinorhynchida was monophyletic. Gorgorhynchoides bullocki (Echinorhynchida) was nested within the 6 species representing Polymorphida, and this clade was nested within species representing Echinorhynchida. Three of 4 palaeacanthocephalan families that could be evaluated were not monophyletic, and this finding was strongly supported. These results indicate that the family level classification of palaeacanthocephalans, which is mainly based on combinations of shared characters (not shared derived characters), needs to be revaluated with respect to comprehensively sampled phylogenetic hypotheses.
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FAQ

172
Does the library offer a book delivery service?
Yes, LSU Library offers book deliveries to faculty and staff only . We will deliver LSU Library books and interlibrary loan books to your departmental mailbox. Reserve and Government Document materials will not be included. To use the service, request the item through your interlibrary loan account. On the request form under "Delivery Options" select "Deliver to Departmental Mailbox." The request will arrive 1-2 business days from the date we receive the item. Heres how to get your materials delivered: - You will need an ILLiad account to make the request. - Once logged in, you will need to select "Deliver to Departmental Mailbox" for your Delivery Method. Books will be delivered to the departmental mailbox of the requestors within 1-2 business days. A second attempt will be made if the delivery is not successful the first time, but if the department office is inaccessible again, patrons will receive an e-mail stating the problem and asking them to come pick up their materials. - The materials will be placed on hold and kept at the checkout desk for 7 days. If they are not picked up in this time frame, they will be returned to the collection. Be aware of the following: - Users are responsible for returning materials back to the library. - Materials will be checked out to the patrons library account prior to being delivered. - The user is responsible for the items requested through this service. - Any LSU Library books not returned or renewed within 40 days of the due date will be considered lost and the usual penalties will apply. - A limit of eight physical material format items can be requested per day. LSU Libraries | Book Delivery Answered by: Access Services Staff
Whats the difference between a patent and trademark?
A patent (https://www.uspto.gov/patents/basics) is a property right granted by the U.S. Government to an inventor to exclude others from making, using, offering for sale, or selling the invention throughout the United States or importing the invention into the United States for a limited time in exchange for public disclosure of the invention when the patent is granted. A trademark (https://www.uspto.gov/trademarks/basics) can be any word, phrase, symbol, design, or a combination of these things that identifies your goods or services. Its how customers recognize you in the marketplace and distinguish you from your competitors. Answered by: Kendall Caple
Can you help me file a patent?
LSU Libraries has a Patent and Trademark Resource Center (PTRC), representative who can answer general questions about the patent and trademark process, but they are not an attorney and cannot provide legal advice or help file the actual patent. In addition to answering general questions, our PTRC representative can: - Provide free brochures and forms on patents and trademarks via email or in person. - Offer free one-on-one consultations by appointment (https://lsu.libcal.com/appointments/caple) . - Instruct patrons in the use of search tools such as PatFT (Patent Full-Text) and TESS (Trademark Electronic Search System) - Direct patrons to legal assistance and resources. For free assistance in filing a patent, consider contacting the USPTOs Pro Se Assistance Center (https://www.uspto.gov/patents/basics/using-legal-services/pro-se-assist…) . Pro se personnel can meet with applicants to answer patent-related questions and assist in filing their applications via video conference or telephone. For an appointment: Please call 1-866-767-3848 or email ProSeAssistanceCenter@uspto.gov (http://www.ProSeAssistanceCenter@uspto.gov/) or click the appointment link HERE (https://www.eventbrite.com/e/pro-se-appointments-tickets-99211447109) . Answered by: Kendall Caple
How do I register a patent, trademark, or copyright?
Trademarks, patents (https://www.uspto.gov/trademarks/basics/trademark-patent-copyright#) , and copyrights (https://www.uspto.gov/trademarks/basics/trademark-patent-copyright#) are different types of intellectual property (https://www.uspto.gov/trademarks/basics/trademark-patent-copyright#) . The USPTO (https://www.uspto.gov/) grants patents and registers trademarks. The U.S. Copyright Office (https://www.copyright.gov/) at the Library of Congress registers copyrights. Use the IP Identifier (https://ipidentifier.uspto.gov/) to learn what kind of intellectual property you have. Once you identify your IP needs, click the following links below for further information on how to register your properties: Patent Process Overview (https://www.uspto.gov/patents/basics/patent-process-overview) Trademark Process Overview (https://www.uspto.gov/trademarks/basics/trademark-process) Copyright Registration Tutorials (https://www.copyright.gov/eco/tutorials.html) Answered by: Kendall Caple
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Gear

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Database Listing

396
Garland Encyclopedia of World Music Online
The Garland Encyclopedia of World Music Online is the first comprehensive online resource devoted to music research of all the world's peoples. More than 9,000 pages of material, combined with entries by more than 700 expert contributors from all over the world, make this the most complete body of work focused on world music. Each volume contains an overview of the region, a survey of its musical heritage, traditions and themes; and a description of specific musical genres, practices, and performances.
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Staff

101
Portrait
Cambria Huff
STEM Librarian
Leah Wood Jewett
Special Collections Exhibitions Manager
Hayley Johnson
Hayley Johnson
Interim Associate Dean for Public Services; Head, Open Scholarship & Government Publications
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