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ABSTRACT Participation by stakeholders in fisheries management has become widely accepted. It is held that it increases both the effectiveness and the legitimacy of management. Many empirical studies of fisheries management, however, have found that political struggles over the profits from fishing drive management decisions. The present paper looks to sociological debates about agency, structure, and embeddedness for guidance in theorizing about the social dimensions of fisheries management in a way that considers both the need for participation and the political economy of the fishery. It argues that focusing on the effect that economic and political structures have on communications between stakeholder groups is one way to link participation and political economy, and we present the management of the Nile perch on Lake Victoria in Tanzania as a case study. The paper evaluates potentials for participatory management by asking how changes in economic and political realities affect stakeholders'claims about the resource, create social distances that affect communications, and privilege particular claims and perspectives. The paper concludes that management measures are undercut when they ignore the needs of groups excluded from the resource. Effective management of the Nile perch fishery is possible, but would require changes in the approaches of the responsible agencies.

A pandemic of El-Tor-type cholera began in south-east Asia during 1961. Many members of the medical profession, as well as government officials and the public, were confused by the relationship between the disease caused by the El Tor organism and classic Asiatic cholera. The authors observed large numbers of cholera patients admitted to San Lazaro Hospital, Manila, early in the Philippine epidemic, and in the present communication they draw attention to certain clinical and epidemiological features of so-called El Tor cholera. The paper not only describes the patients and the epidemic, but also suggests some of the treatment needs during such an epidemic. No indication was found that the disease caused by the classic cholera vibrio is different from that which is designated the El Tor variant.

Pseudogymnoascus destructans is an ascomycetous fungus responsible for the disease dubbed white-nose syndrome (WNS) and massive mortalities of cave-dwelling bats. The fungus infects bat epidermal tissue, causing damage to integumentary cells and pilosebaceous units. Differences in epidermal lipid composition caused by P. destructans infection could have drastic consequences for a variety of physiological functions, including innate immune efficiency and water retention. While bat surface lipid and stratum corneum lipid composition have been described, the differences in epidermal lipid content between healthy tissue and P. destructans–infected tissue have not been documented. In this study, we analyzed the effect of wing damage from P. destructans infection on the epidermal polar lipid composition (glycerophospholipids [GPs] and sphingomyelin) of little brown bats (Myotis lucifugus). We hypothesized that infection would lead to lower levels of total lipid or higher oxidized lipid product proportions. Polar lipids from three damaged and three healthy wing samples were profiled by electrospray ionization tandem mass spectrometry. We found lower total broad lipid levels in damaged tissue, specifically etherlinked phospholipids, lysophospholipids, phosphatidylcholine, and phosphatidylethanolamine. Thirteen individual GP species from four broad GP classes were present in higher amounts in healthy tissue. Six unsaturated GP species were absent in damaged tissue. Our results confirm that P. destructans infection leads to altered lipid profiles. Clinical signs of WNS may include lower lipid levels and lower proportions of unsaturated lipids due to cellular and glandular damage. ; "This project was funded by an Arkansas State Wildlife Grant, the National Speleological Society, the Graduate Program of Environmental Science at Arkansas State University (ASU), the US Fish and Wildlife Service, a Government of Canada Postdoctoral Fellowship (PDRF), the Natural Sciences and Engineering Research Council (NSERC; Canada), the German Academic Exchange Service (DAAD), and the Center for North American Bat Research and Conservation at Indiana State University. Instrument acquisition and method development at KLRC was supported by NSF grants MCB 0455318, MCB 0920663, and DBI 0521587; Kansas Networks of Biomedical Research Excellence (INBRE; National Institutes of Health grant P20 RR16475 from the INBRE program of the National Center for Research Resources); National Science Foundation Experimental Program to Stimulate Competitive Research grant EPS-0236913; Kansas Technology Enterprise Corporation; and Kansas State University." ; https://www.journals.uchicago.edu/doi/10.1086/681931

Context Elevated mesopredator populations can pose a threat to species of conservation concern. Aims We sought to evaluate the effectiveness of raccoon removal on their abundance and on Blanding's turtle nest success. Methods We used an index of raccoon abundance generated from camera-trap data and information on the success of Blanding's turtle nests to compare adjacent control and raccoon-removal sites. Key results Raccoon detections were more frequent and abundance index values were higher at control sites than at the removal site. However, Blanding's turtle nest success did not differ between control and removal sites, likely because of differences in nest location and camera proximity. Conclusions The efficacy of raccoon removal for Blanding's turtle conservation may vary with nest habitat characteristics and can benefit from a priori knowledge of nesting areas. Implications Mesopredator removal can be beneficial to species of conservation concern, provided it occurs in areas of greatest impact.

In 1992, the Union of Concerned Scientists shared their 'World Scientists'Warning to Humanity' with governmental leaders worldwide, calling for immediate action to halt the environmental degradation that threatens the systems that support life on Earth. A follow-up 'Second Warning' was released in 2017, with over 15 000 scientists as signatories, describing the lack of progress in adopting the sustainable practices necessary to safeguard the biosphere. In their 'SecondWarning', Ripple and colleagues provided 13 'diverse and effective steps humanity can take to transition to sustainability.' Here, we discuss how the field of conservation physiology can contribute to six of these goals: (i) prioritizing connected, well-managed reserves; (ii) halting the conversion of native habitats to maintain ecosystemservices; (iii) restoring native plant communities; (iv) rewilding regions with native species; (v) developing policy instruments; and (vi) increasing outdoor education, societal engagement and reverence for nature. Throughout, we focus our recommendations on specific aspects of physiological function while acknowledging that the exact traits that will be useful in each context are oftenstill being determined and refined. However, for each goal, we include a short case study to illustrate a specific physiological trait or group of traits that is already being utilized in that context. We conclude with suggestions for how conservation physiologists can broaden the impact of their science aimed at accomplishing the goals of the 'Second Warning'. Overall, we provide an overview of how conservation physiology can contribute to addressing the grand socio-environmental challenges of our time. ; National Science Foundation MacroSystems Biology program [DEB-DEB-1340856]; National Science FoundationNational Science Foundation (NSF) [IOS-1755055, 1951244, 2017949]; FutureMARES (Climate Change and Future Marine Ecosystem Services and Biodiversity, EU H2020) [869300] ; Published version ; K.R.H. was supported by the National Science Foundation MacroSystems Biology program (DEB-DEB-1340856). W.A.H. was supported by the National Science Foundation (grant #IOS-1755055). M.A.P. received partial support from FutureMARES (Climate Change and Future Marine Ecosystem Services and Biodiversity, EU H2020, award no. 869300). L.S. is funded by the National Science Foundation (grants 1951244 and 2017949).

We conducted a case-control study in Freetown, Sierra Leone, to investigate ocular signs in Ebola virus disease (EVD) survivors. A total of 82 EVD survivors with ocular symptoms and 105 controls from asymptomatic civilian and military personnel and symptomatic eye clinic attendees underwent ophthalmic examination, including widefield retinal imaging. Snellen visual acuity was <6/7.5 in 75.6% (97.5% CI 63%-85.7%) of EVD survivors and 75.5% (97.5% CI 59.1%-87.9%) of controls. Unilateral white cataracts were present in 7.4% (97.5% CI 2.4%-16.7%) of EVD survivors and no controls. Aqueous humor from 2 EVD survivors with cataract but no anterior chamber inflammation were PCR-negative for Zaire Ebola virus, permitting cataract surgery. A novel retinal lesion following the anatomic distribution of the optic nerve axons occurred in 14.6% (97.5% CI 7.1%-25.6%) of EVD survivors and no controls, suggesting neuronal transmission as a route of ocular entry.