Morphological shifts in island-dwelling birds: The roles of generalist foraging and niche expansion

Passerine birds living on islands are usually larger than their mainland counterparts, in terms of both body size and bill size. One explanation for this island rule is that shifts in morphology are an adaptation to facilitate ecological niche expansion. In insular passerines, for instance, increased bill size may facilitate generalist foraging because it allows access to a broader range of feeding niches. Here we use morphologically and ecologically divergent races of white-eyes (Zosteropidae) to test three predictions of this explanation: (1) island populations show a wider feeding niche than mainland populations; (2) island-dwelling populations are made up of individual generalists; and (3) within insular populations there is a positive association between size and degree of foraging generalism. Our results provide only partial support for the traditional explanation. In agreement with the core prediction, island populations of white-eye do consistently display a wider feeding niche than comparative mainland populations. However, observations of individually marked birds reveal that island-dwelling individuals are actually more specialized than expected by chance. Additionally, neither large body size nor large bill size are associated with generalist foraging behavior per se. These latter results remained consistent whether we base our tests on natural foraging behavior or on observations at an experimental tree, and whether we use data from single or multiple cohorts. Taken together, our results suggest that generalist foraging and niche expansion are not the full explanation for morphological shifts in island-dwelling white-eyes. Hence, we review briefly five alternative explanations for morphological divergence in insular populations: environmental determination of morphology, reduced predation pressure, physiological optimization, limited dispersal, and intraspecific dominance.

Ultraviolet signals in birds are special

Recent behavioural experiments have shown that birds use ultraviolet (UV)-reflective and fluorescent plumage as cues in mate choice. It remains controversial, however, whether such UV signals play a special role in sexual communication, or whether they are part of general plumage coloration. We use a comparative approach to test for a general association between sexual signalling and either UV-reflective or fluorescent plumage. Among the species surveyed, 72% have UV colours and there is a significant positive association between UV reflectance and courtship displays. Among parrots (Psittaciformes), 68% of surveyed species have fluorescent plumage, and again there is a strong positive association between courtship displays and fluorescence. These associations are not artefacts of the plumage used in courtship displays, being generally more 'colourful' because there is no association between display and colours lacking UV reflectance or fluorescence. Equally, these associations are not phylogenetic artefacts because all results remain unchanged when families or genera, rather than species, are used as independent data points. We also find that, in parrots, fluorescent plumage is usually found adjacent to UV-reflective plumage. Using a simple visual model to examine one parrot, the budgerigar Melopsittacus undulatus, we show that the juxtaposition of UV-reflective and fluorescent plumage leads to a 25-fold increase in chromatic contrast to the budgerigar's visual system. Taken together, these results suggest that signals based on UV contrast are of special importance in the context of active sexual displays. We review briefly six hypotheses on why this may be the case: suitability for short-range signalling; high contrast with backgrounds; invisibility to predators; exploitation of pre-existing sensory biases; advertisement of feather structure; and amplification of behavioural signals.

The Lake Tekapo experiment (LTEX): An investigation of atmospheric boundary layer processes in complex terrain

A research program on atmospheric boundary layer processes and local wind regimes in complex terrain was conducted in the vicinity of Lake Tekapo in the southern Alps of New Zealand, during two 1-month field campaigns in 1997 and 1999. The effects of the interaction of thermal and dynamic forcing were of specific interest, with a particular focus on the interaction of thermal forcing of differing scales. The rationale and objectives of the field and modeling program are described, along with the methodology used to achieve them. Specific research aims include improved knowledge of the role of surface forcing associated with varying energy balances across heterogeneous terrain, thermal influences on boundary layer and local wind development, and dynamic influences of the terrain through channeling effects. Data were collected using a network of surface meteorological and energy balance stations, radiosonde and pilot balloon soundings, tethered balloon and kite-based systems, sodar, and an instrumented light aircraft. These data are being used to investigate the energetics of surface heat fluxes, the effects of localized heating/cooling and advective processes on atmospheric boundary layer development, and dynamic channeling. A complementary program of numerical modeling includes application of the Regional Atmospheric Modeling System (RAMS) to case studies characterizing typical boundary layer structures and airflow patterns observed around Lake Tekapo. Some initial results derived from the special observation periods are used to illustrate progress made to date. In spite of the difficulties involved in obtaining good data and undertaking modeling experiments in such complex terrain, initial results show that surface thermal heterogeneity has a significant influence on local atmospheric structure and wind fields in the vicinity of the lake. This influence occurs particularly in the morning. However, dynamic channeling effects and the larger-scale thermal effect of the mountain region frequently override these more local features later in the day.

Hijacking, hitchhiking and burglary behaviors of pelagic octopuses

Cephalopod International Advisory Council Conference: Recent Advances in Cephalopod Science, November 6-14, 2015, Hakodate, Japan.

THE FIRST CASE OF Angiostrongylus cantonensis EOSINOPHILIC MENINGITIS DIAGNOSED IN THE CITY OF SÃO PAULO, BRAZIL

Introduction: Angiostrongylus cantonensis is a natural parasite found in lung arteries of rats, which in humans may cause eosinophilic meningitis. Objective: To report the first case of eosinophilic meningitis caused by Angiostrongylus cantonensis in the city of São Paulo, Brazil. Case report: A male patient, 11 years old, living in the southern area of São Paulo, was admitted to the Pediatric Emergency Department with ongoing headaches for three days, but no fever or any other complaint. The presence of snails and rodents was reported in the peridomicile. The child was awake, lucid, oriented; muscular strength preserved, isochoric, photo reagent pupils and terminal nuchal rigidity - Glasgow Coma Scale (GCS) = 15. The laboratory tests showed a mild leukocytosis with 1736 eosinophils/mm3 and the CSF analysis disclosed 160 leukocytes/mm3 with 36% of eosinophils. The bacterial culture was negative. Computed Cerebral Tomography showed no alterations. The RT-PCR assay for detecting Angiostrongylus cantonensis larvae and DNA was negative. ELISA antibodies for IgG anti-A. cantonensis was negative in serum and undetermined in CSF and samples collected five days after the onset of symptoms. Seroconversion was observed in the sample collected 135 days later. Conclusion: the epidemiological and clinical data, the CSF alterations with eosinophilia and the seroconversion strongly suggest Angiostrongylus cantonensis eosinophilic meningitis.

MOLECULAR INVESTIGATION OF HEMOTROPIC MYCOPLASMAS IN HUMAN BEINGS, DOGS AND HORSES IN A RURAL SETTLEMENT IN SOUTHERN BRAZIL

SUMMARY The aims of this study were to determine the prevalence of hemoplasmas in a rural Brazilian settlement's population of human beings, their dogs and horses, highly exposed to tick bites; to identify the tick species parasitizing dogs and horses, and analyze factors associated with their infection. Blood samples from 132 dogs, 16 horses and 100 humans were screened using a pan-hemoplasma SYBR green real-time PCR assay followed by a species-specific TaqMan real-time PCR. A total of 59/132 (44.7%) dog samples were positive for hemoplasmas (21 Mycoplasma haemocanisalone, 12 ' Candidatus Mycoplasma haematoparvum' alone and 21 both). Only 1/100 (1.0%) human sample was positive by qPCR SYBR green, with no successful amplification of 16S rRNA or 23 rRNA genes despite multiple attempts. All horse samples were negative. Dogs >1 year of age were more likely to be positive for hemoplasmas ( p= 0.0014). In conclusion, although canine hemoplasma infection was highly prevalent, cross-species hemoplasma transmission was not observed, and therefore may not frequently occur despite overexposure of agents and vectors.

Effects of severe protein restriction in levels of parasitemia and in mortality of mice accutely infected with Trypanosoma cruzi

Adult mice were submitted to different degrees of protein restriction for five weeks (4.75, 9.5,14.25 and 19% of protein in isocaloric diets with normal content of mineral and vitamins), being subsequently infected with two strains of Trypanosoma cruzi: 10(5) trypomastigotes of Y strain or 14(5) trypomastigotes of CL strain. The same diet was maintained for all animals and the infection wasfollowed up by evaluation of blood parasites, mortality and intensity of lesions in the heart and skeleton muscle. Only severe protein restriction (4.75%) induced decrease in resistance to the infection with both the Y and CL strains of T. cruzi, which resulted in higher parasitemia and mortality. The inflammatory lesions in heart and skeleton muscle were less extensive in groups with severe protein restriction despite the increased number of parasite in muscle cells. Depression of immune mechanisms could be responsiblefor the reduced resistance and reduced inflammatory reaction after T. cruzi infection in severely protein restricted animals.

Dynamic presentations for illustration purposes

Dynamics, presentation, illustration, computer graphics, temporal modelling, non-photorealistic rendering

Collectio sermonum de dominicis, de festis et de sanctis, ad usum Fratrum Minorum.

« Sermo adaptabillis b. Laurentio... Dispersit, dedit pauperibus... Quia secundum b. Dionixium in De ecclesiastica Yerarchia... » (1-2) ; — « Sermo de assumptione b. Marie... Quid hoc audio de te... Quid nos tantilly... » (2v-3), suivi d'une note à l'usage des prédicateurs : « Nota quod ne sermo sit deffectuosus... » (3) ; — « Sermo de conceptione b. Marie. Que est ista que progreditur... Karissimi, predicator evangelicus, beatitudinis eterne preco... » (3v-4v) ; — « Sermo de quatuor festis principalibus b. Marie... Que est ista que progreditur... Verba ista sunt tocius curie celestis... » (4v-5v) ; — « Sermo de Purificatione. In mansuetudine suscipite... Secundum b. Gregorium, Mor. 23... » (6-7) ; — « Sermo de b. Francischo... Cujus est ymago hec et superscriptio... Secundum b. Gregorium, omelia 30... » (7v-8v) ; — « Sermo in dominica [in Quinquagesima]. Ecce ascendimus Jerosolimam... Karissimi, sicut scitis, finis est... » (9-10) ; — [Sermo in dominica IIa post Epiphaniam] « Tu servasti vinum bonum usque adhuc... In verbis istis spiritualiter intellectus... » (10-10v) ; — « Sermo de b. Francischo. Ad ymaginem similitudinis sue... Verba ista ad litteram scripta... » (11-12) ; — « Sermo de b. Johane Baptista. Magnus es tu et faciens mirabilia... Secundum Gregorium quia tute... » (12v-13) ; — « Sermo de angelis. Inmittit angelus Domini... Sanctus ille David, acceptus de ovibus... » (13v-14) ; — « In ascensione Domini. Exultavit ut gigas... Duo sunt inter cetera Christi misteria... » (14v-16) ; — « De asumpcione Domine nostre. Ad preceptum tuum elevabitur aquila... Quia, karissimi, Mater Domini... » [FRANCISCUS DE MAYRONIS] ; cf. éd. Bâle, 1498, f. CIV-CIIIV, avec variantes (16v-18) ; — « De Maria Magdalena. Permittuntur [sic pro : Remittuntur] tibi peccata tua... Sicut solent maximi principes... » [Idem], sermon abrégé ; cf. éd. cit., f. LXXXVIIIV-XCI (18-19v) ; — « De s. Johane Evangelista. Dillectus meus michi... Ostenditur b. Johannes prout inflamatus... » [Idem], résumé ; cf. éd. cit., f. XXIX-XXIXV (20) ; — « In festo apostolorum Petri et Pauli. Accepimus gratiam et apostolatum... Gloriosissimi christiane fidei religionis... » (20v-23v) ; — « Sermo de gratia divina acquirenda. Accepimus gratiam etc. Vivat, obsecro, anima mea ... quoniam... » (24) ; — « Accepimus gratiam etc. Restat ostendere via physionomica... » (24v-26) ; — « Sermo de beatitudine, sive gloria celesti, sive in festo Omnium sanctorum. Fons sapientie verbum Dei... Ecce ego sto prope fontem... In hoc festo precipue et anno... » (26-29) ; — « De nativitate Domine nostre. Egredietur virga de radice Jesse... Percutiet terram virga... Clementissimus pastor ovium... » (29v-32) ; — « Sermo de uno confessore pontifice. Rector fratrum et stabilimentum populi... Inter viros eximie sanctitatis... » (32v) ; — « De nativitate Domini. Transeamus usque Bethelem... Innocencius in quodam sermone de predicatione... » (34v-36) ; — « In die nativitatis Domini. Sol ortus est et humiles exaltati sunt... Beatus Augustinus, De Civitate Dei : Anima participacione... » (36-37v) ; — « Dominica infra octavas Nativitatis. Ecce positus est hic in ruinam... Secundum doctrinam Philosophi in diversis locis... » (38-38v) ; — « Dominica quarta in quadragesima. Sequebatur eum multitudo magna... Secundum Damascenum libro primo, capitulo XV°, diversitas actionum... » (39-40v) ; — « De Canane[a], dominica secunda [sic] in quadragesima [Feria 5a post dom. Ia in XLa]. Dimitte illam quia clamat... Si attendamus ordinem generacionis... » (41-42v) ; — « Dominica de Passione. Si veritatem dico vobis... Secundum sententiam Phylosophi primo Metaphysice... » (43-43v) ; — « In cena Domini. Hodie est rex et cras morietur... Omne agens ordinate prius inquirit... » (44-45) ; — « De resurectione. Hec dies quam fecit Dominus... Scilicet est ex dictis Philosophi in diversis locis... » (45v-47) ; — « Dominica in Quadragesima. Ecce nunc tempus acceptabile... Ut dicit Philosophus, secundo de Celo et mundo... » (47-48v) ; — « De b. Clara. Sicut lux meridiana clara est... Secundum Philosophum tertio Methaphysice, si res creatas... » (48v-49v) ; — « Sermo de Cruce. Vidit mulier quod bonum esset lignum... Sicut ex doctrina Philosophi primo Ethicorum... » (50-51) ; — « De s. Anthonio. Misit servum suum hora cene... Sicut in rebus naturalibus docet experiencia... » (51v-52v) ; — « De b. Johane Batista. Tu puer propheta Altissimi... Secundum doctrinam Hugonis in commento de angelica Jerarchia... » (53-54) ; — « De b. Bertholameo [sic]. Dedit illi contra inimicos potenciam... Racio docet et experiencia manifestat... » (54v-55) ; — « De b. Francischo. Amice, ascende superius... Dicit Philosophus quinto Physicorum quod motus... » (55v-56) ; — [De b. Bernardo] « Omnia parata sunt, venite ad nupcias... Sicut videmus in motu naturali... » (56v-57) ; — « De sacerdote novo. Vos elegit Dominus... Ut potest haberi ex dictis Dyonisii... » (57v-58v) ; — « De assumpcione Virginis gloriose. Elevetur tronus David super Israel... Videmus quod triplici racione aliqua corpora... » (58v-59v) ; — « De assumpcione Virginis. Veni de Libano sponsa mea... Secundum testimonium Scripturarum et humane consuetudinis... » (59v-61) ; — « De Trinitate. Tripliciter sol exurens montes... Secundum quod dicit Philosophus, tota nostra noticia... » (61-61v) ; — « De b. Francischo. Hic beatus in facto suo erit... Post doctrinam philosophorum et experienciam... » (62-62v) ; — [De b. Eligio] « Provideat rex virum sapientem... Secundum sententiam (secundum) sapientis primo Metaphysice . » (63-64) ; — « De resurrectione Domini. Tercia dies est hodie... Tripliciter alicujus rei non vise accipimus fidem certam... » (64-65) ; — «Stetit in medio discipulorum et dixit : Pax vobis... Ut dicit b. Augustinus undevicesimo de Civitate Dei... » (65v-67) ; — « De Omnibus sanctis... Gloriosa dicta sunt de te... Aperta est civitas... Doctore egregio Bernardo scilicet attestante... » (67-69) ; — « De b. Johane Batista. Hic venit in testimonium... Sicut potest probari ex dictis Philosophi et exemplis... » (69v-70) ; — « De b. Petro apostolo. Tu pasce populum meum Israel... Secundum sententiam Philosophi tertio Politicorum... » (70v-71) ; — « De assumpcione Virginis gloriose. Transibo in locum tabernaculi... Triplici ratione secundum philosophorum doctrinam aliqua moventur... » (71v-72v) ; — [De b. Francisco] « Adolescens, tibi dico surge... Consideranti sciderum revolucionem... » (73-74v) ; — [De s. Michaele] « Michael et angeli preliabantur... Sicut ex doctrina Phylosophi in pluribus locis patet... » (74v-76) ; — « De b. Nicholao. Petra fundebat michi rivos olei... Secundum philosophicam doctrinam, diversitas effectuum... » (76-77) ; — « In festo apostolorum Petri et Pauli. Fecit Deus duo luminaria magna... Secundum sententiam Philosophi secundo Methaphysice... » (77v-78) ; — « De b. Bertholameo. Vidi angelum fortem... Secundum dictum Philosophi, omnes transferentes... » (78v-79) ; — « Dominica in Quadragesima. Ductus est Jhesus in desertum... Sicut naturalium operationum multiplex experiencia... » (79v-80v) ; — « De s. Thoma apostolo. Ecce cognovi quoniam Deus meus es... Bernardus in sermone : Deus noverim me... » (81-81v) ; — « De sacerdote novo. Misit Dominus servum suum... Secundum quod dicit Philosophus primo Ethicorum, diversarum operationum... » (82-82bis) ; — « In purificatione Virginis. Parasti ante faciem omnium populorum... Si attendamus formationem rerum temporalium... » (82bisv-83v) ; — « De uno martire. Esto vir fortis, et prelia bella Domini... Secundum consuetudinem hominum... » (84-85) ; — « De festo Purificacionis. Lucerna splendens super candelabrum... Doctrina philosophorum et tradit... » (85v-86v) ; — « Feria quarta Cinerum. Cum jejunas unge caput tuum... Morum Philosophi doctrinam perlegens et attendens... » (87-88v) ; — « In quarta feria Cinerum. Cum jejunatis, nolite fieri sicut ypocrite... Sicut ex doctrina Philosophi primo Ethicorum potest colligi... » (88v-89v) ; — « In festo b. Lodovici [episcopi]. Surrexit rex de solio suo... Ut dicit Philosophus quarto Methaphysicorum... » (90-91v) ; — « De b. Jacobo. Vox tonitrui tui in rota... Secundum doctrinam philosophicam formarum naturalium... » (91v-92v) ; — [In festo Annunciationis] « Ecce concipies in utero... Secundum doctrinam Philosophi septimo de Animalibus, ad generationem... » (93-94) ; — « De s. Ludovico [episcopo]. Reposita est michi corona justitie... Secundum sententiam Philosophi secundo Phisicorum, omne agens... » (94-96).

The “Death of environmentalism” debates: forging links between SEA and civil society discourses

Social and environmental accounting (SEA) is currently going through a period of critical selfanalysis.Challenging questions are being raised about how SEA should be defined, who should be doing the defining, and what the agenda should be. We attempt to engage and enrich these debates from both a process and content perspective by drawing on the political philosophy of agonistic pluralism and a set of debates within the environmental movement – “the death of environmentalism” debates. The contribution of the paper is twofold: to set forth the death of environmentalism debates in the accounting literature and, in doing so, to contextualize and theorize the contested nature of SEA using agonistic pluralism. In contrast to consensually oriented approaches to SEA, the desired outcome is not necessarily resolution of ideological differences but to imagine, develop, and support democratic processes wherein these differences can be recognized and engaged. We construe the “Death” debates as illustrative of the contestable practical and political issues facing both SEA and progressive social movements generally, demonstrating the context and content of the deliberations necessary in contemplating effective programs of engagement. The SEA community, and civil society groups, can benefit from the more overtly political perspective provided by agonistic pluralism. By surfacing and engaging with various antagonisms in this wider contested civic sphere, SEA can more effectively respond to, and move beyond, traditional politically conservative, managerialist approaches to sustainability.

QUALIDADE DO SONO, HIGIENE DO SONO, CRENÇAS DISFUNCIONAIS SOBRE O SONO, E TEMPERAMENTO EM ADOLESCENTES Estudo exploratório com adolescentes entre os 13 e os 19 anos

O sono desempenha um papel importante no desenvolvimento físico e emocional dos adolescentes (Del Ciampo, 2012). As perturbações de sono na adolescência são um problema com uma prevalência significativa (Mindell & Owens, 2010). As suas consequências interferem no bem-estar e no desenvolvimento saudável desta população (Hamilton, 2009). É atualmente reconhecida a pertinência do estudo dos determinantes do sono na adolescência. Esta investigação teve como primeiro objetivo descrever o padrão de sono, avaliar a perceção de qualidade do sono, a higiene do sono, as crenças disfuncionais em relação ao sono, e a relação entre o temperamento e o sono, numa amostra comunitária de adolescentes portugueses. Foram ainda consideradas como variáveis independentes o controlo parental da hora de deitar e a perceção de problemas de sono. Num segundo objetivo foi considerado o estudo das associações entre as variáveis. Como terceiro objetivo pretendeu-se avaliar a contribuição das variáveis para a qualidade do sono. Foram utilizadas as versões portuguesas de 4 questionários: a escala de Autoavaliação da Qualidade do Sono na Adolescência - AQSA, a Escala de Higiene do Sono para Adolescentes - EHSA, a Escala de Crenças Disfuncionais sobre o Sono – ECDS e o Questionário sobre o Temperamento no Início da Adolescência-Revisto – EATQ-R. Integraram a amostra 164 participantes, com idades entre os 13 e os 19 anos (M=15,37; DP=1,16). A recolha de dados teve lugar num Estabelecimento Público de Ensino Básico e Secundário, em Lisboa. Os resultados mostraram que os adolescentes dormem menos uma hora do que o recomendado durante a semana. A discrepância de horas dormidas durante a semana e o fim-de-semana é significativa (2h04). Apenas 27% dos pais participam no estabelecimento de horas para dormir. Os adolescentes da amostra apresentam valores médios de qualidade do sono, com piores resultados no domínio “acordar”; valores médios de higiene do sono com piores valores no domínio “estabilidade do sono”; e crenças pouco disfuncionais sobre o sono. 35% da amostra considera ter problemas de sono. As raparigas apresentam piores resultados na qualidade e higiene do sono, crenças mais disfuncionais sobre o sono. Os iv 4 constructos apresentam correlações significativas entre si. A higiene do sono, e os fatores do temperamento, “afetividade negativa”, “extroversão” e “controlo com esforço” mostraram ser preditores da qualidade do sono. No modelo final a idade, o género, o controlo parental e as crenças em relação ao sono mostraram não ter efeito em relação à qualidade do sono. O modelo preditivo explicou 33,5% da variabilidade da qualidade do sono.

Revisitando a "epistemologia social": esboço de uma ecologia sociotécnica do trabalho intelectual

Formulado em 1952 pelos pesquisadores e bibliotecários americanos Margaret Egan e Jesse Shera, o conceito de 'Epistemologia Social', que propunha o estudo da produção, do fluxo e do consumo de qualquer tipo de "produto intelectual", teve pouca repercussão e baixa receptividade na literatura especializada da época. Retomando o conceito e relacionando-o a idéias e teorias concebidas por autores contemporâneos como Foucault, Lévy e Latour, o presente trabalho sugere que a 'Epistemologia Social' pode ser entendida como o estudo das relações recíprocas que se estabelecem entre os seres humanos e seu mutante entorno social, cultural e tecnológico, visando à atividade cognitiva, isto é, o ciclo que envolve a produção, a circulação e o uso do conhecimento, caracterizado em sua materialidade como uma ecologia sociotécnica do trabalho intelectual. Assim articulado, tal arcabouço conceitual poderia ser utilizado pela Ciência da Informação como embasamento teórico interessante e pertinente para as pesquisas científicas que a área desenvolve.