Experimental\u3ci\u3e Bolbophorus damnificus \u3c/i\u3e(Digenea: Bolbophoridae) Infections in Piscivorous Birds

In order to determine potential definitive hosts of the digenetic trematode, Bolbophorus damnificus, two American White Pelicans (Pelecanus erythrorhynchos), two Double-crested Cormorants (Phalacrocorax auritus), two Great Blue Herons (Ardea herodias), and two Great Egrets (Ardea alba) were captured, treated with praziquantel, and fed channel catfish (Ictalurus punctatus) infected with B. damnificus metacercariae. Patent infections of B. damnificus, which developed in both American White Pelicans at 3 days post-infection, were confirmed by the presence of trematode ova in the feces. Mature B. damnificus trematodes were recovered from the intestines of both pelicans at 21 days post-infection, further confirming the establishment of infection. No evidence of B. damnificus infections was observed in the other bird species studied. This study provides further evidence that Double-crested Cormorants, Great Blue Herons, and Great Egrets do not serve as definitive hosts for B. damnificus

Experimental\u3ci\u3e Bolbophorus damnificus \u3c/i\u3e(Digenea: Bolbophoridae) Infections in Piscivorous Birds

In order to determine potential definitive hosts of the digenetic trematode, Bolbophorus damnificus, two American White Pelicans (Pelecanus erythrorhynchos), two Double-crested Cormorants (Phalacrocorax auritus), two Great Blue Herons (Ardea herodias), and two Great Egrets (Ardea alba) were captured, treated with praziquantel, and fed channel catfish (Ictalurus punctatus) infected with B. damnificus metacercariae. Patent infections of B. damnificus, which developed in both American White Pelicans at 3 days post-infection, were confirmed by the presence of trematode ova in the feces. Mature B. damnificus trematodes were recovered from the intestines of both pelicans at 21 days post-infection, further confirming the establishment of infection. No evidence of B. damnificus infections was observed in the other bird species studied. This study provides further evidence that Double-crested Cormorants, Great Blue Herons, and Great Egrets do not serve as definitive hosts for B. damnificus

Report of a graduate internship on the roles and responsibilities of a middle school principal

This thesis has no abstract

Revealing the queer-spectrum in STEM: undergraduate student responses to diverse gender identity and sexual orientation demographics questions

includes bibliographical references.includes bibliographical references.Poster was to be presented at the NARST 2020 conference in Portland, Oregon, from March 15-18th, which was canceled.Queer individuals face notable heterosexist and gender-normative expectations in STEM, leading to lower persistence. However, research on the experiences of queer-spectrum individuals is limited by current demographic practices. We developed queer-inclusive demographics questions and administrated them as part of a larger study in undergraduate engineering and computer science classes. We ask: how do responses compare to nation-wide queer demographics, 3-7% for both sexual orientation and gender, and how common are heterosexist or binary-enforcing responses? In a data subset (n=314), 14% of students reported a queer sexual orientation and 1.3% of students reported a queer gender. Few students used the open-response box for gender binary-enforcing (1.3%) or heterosexist (0.3%) commentary (e.g. only two genders exist). Our high rate of queer sexual orientation responses may be explained by our broad definition of queer or differing population demographics for young adults. The low rate of queer gender identity may be due to under-representation, lack of self-reporting, or survey structure. These data will inform analysis of student experiences in our larger study. Additional work developing a research-based queered demographics instrument is needed for larger-scale changes in demographics practices, which will help others identify and address barriers that queer individuals face in STEM fields.Supported by the National Science Foundation under grant nos. 1726268, 1725880 and 1726088, as well as funding from Colorado State University's Office of the Vice President for Diversity and Walter Scott, Jr. College of Engineering

The Lantern Vol. 26, No. 2, Spring 1958

• The Wise Man • Of Men and Lobsters • The Painting • The Ghost of Moon Mountain • Song for the Atomic Age • Opus I • Stillnesshttps://digitalcommons.ursinus.edu/lantern/1074/thumbnail.jp

\u3ci\u3eBolbophorus damnificus\u3c/i\u3e n. sp. (Digenea: Bolbophoridae) from the Channel Catfish \u3ci\u3eIctalurus punctatus\u3c/i\u3e and American White Pelican \u3ci\u3ePelecanus erythrorhynchos\u3c/i\u3e in the USA Based on Life-Cycle and Molecular Data

The common pathogenic prodiplostomulum metacercaria in the flesh, mostly near the skin, of pond-produced channel catfish Ictalurus punctatus has been demonstrated to be Bolbophorus damnificus Overstreet & Curran n. sp. The catfish acquires the infection from the snail Planorbella trivolvis, the only known first intermediate host, and the species is perpetuated through the American white pelican Pelecanus erythrorhynchos, as confirmed by experimental infections with nestling and dewormed adult pelican specimens in conjunction with molecular data. It differs from the cryptic species Bolbophorus sp., also found concurrently in the American white pelican, by having eggs 123–129 μm rather than 100–112 μm long and consistent low values for nucleotide percentage sequence similarity comparing COI, ITS 1/2, 18S rRNA and 28S rRNA fragments. Bolbophorus sp. is comparable but most likely distinct from B. confusus (Kraus, 1914), which occurs in Europe and has eggs 90–102 μm long. Its intermediate hosts were not demonstrated. The adults of neither of the confirmed North American species of Bolbophorus were encountered in any bird other than a pelican, although several shore birds feed on infected catfish, and B. damnificus can survive but not mature when protected in the mouse abdominal cavity. B. ictaluri (Haderlie, 1953) Overstreet & Curran n. comb., a species different from B. damnificus, is considered a species inquirenda

Development of a framework for reporting health service models for managing rheumatoid arthritis

The purpose of this study was to develop a framework for reporting health service models for managing rheumatoid arthritis (RA). We conducted a search of the health sciences literature for primary studies that described interventions which aimed to improve the implementation of health services in adults with RA. Thereafter, a nominal group consensus process was used to synthesize the evidence for the development of the reporting framework. Of the 2,033 citations screened, 68 primary studies were included which described 93 health service models for RA. The origin and meaning of the labels given to these health service delivery models varied widely and, in general, the reporting of their components lacked detail or was absent. The six dimensions underlying the framework for reporting RA health service delivery models are: (1) Why was it founded? (2) Who was involved? (3) What were the roles of those participating? (4) When were the services provided? (5) Where were the services provided/received? (6) How were the services/interventions accessed and implemented, how long was the intervention, how did individuals involved communicate, and how was the model supported/sustained? The proposed framework has the potential to facilitate knowledge exchange among clinicians, researchers, and decision makers in the area of health service delivery. Future work includes the validation of the framework with national and international stakeholders such as clinicians, health care administrators, and health services researchers