Results 31 to 40 of about 1,637 (87)

A new endemic pearl cichlid of the ‘Geophagus’ brasiliensis (Cichliformes: Cichlidae) species group from the Piranga River, upper Doce River basin, southeastern Brazil

open access: yesJournal of Fish Biology, Volume 108, Issue 6, Page 1687-1700, June 2026.
Abstract A new species of pearl cichlid of the ‘Geophagus’ brasiliensis species group, endemic to the Piranga River, a major tributary of the upper Doce River basin in the state of Minas Gerais, southeastern Brazil, is herein described. The new species is delimited using an integrative approach, with molecular‐based species delimitation methods coupled
Cidimar E. de Assis   +7 more
wiley   +1 more source

"Plantar pro gasto": a importância do autoconsumo entre famílias de agricultores do Rio Grande do Sul

open access: yesRevista de Economia e Sociologia Rural, 2008
O artigo discute a valoração e importância da produção para o autoconsumo na reprodução social das unidades familiares e caracteriza os alimentos autoconsumidos.
Catia Grisa, Sergio Schneider
doaj   +1 more source

Dinâmica agrária e Reprodução social dos Agricultores de Rolador, Rio Grande do Sul

open access: yesDesenvolvimento em Questão, 2022
O objetivo principal deste trabalho é elucidar e analisar a dinâmica agrária sob a ótica da reprodução social dos agricultores do município de Rolador-RS.
Jeferson Tonin   +3 more
doaj   +1 more source

Climate‐induced shifts in long‐term tropical tree reproductive phenology: Insights from species dependent on and independent of biotic pollination

open access: yesFunctional Ecology, Volume 40, Issue 5, Page 1286-1298, May 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The dependence on biotic pollination may constrain plant phenological responses because flowering time ultimately defines reproductive success. We proposed a local‐scale study combining long‐term phenology and experimental data to evaluate how a key functional trait—the
Amanda Eburneo Martins   +3 more
wiley   +1 more source

The Red Queen unveils the sexual and mating strategies of flowers

open access: yesJournal of Ecology, Volume 114, Issue 5, May 2026.
Although the conventional wisdom is that floral traits of plants evolved in concert with their mutualistic pollinators, here we showed that several key sexual and mating traits of plants, which modulate their outcrossing strategy, evolved in response to the pressure exerted by their antagonistic insect herbivores.
Carlos Roberto Fonseca   +2 more
wiley   +1 more source

A reprodução social nas periferias do capitalismo global

open access: yesEstudos de Sociologia
O presente artigo busca apresentar como a reprodução social – que funciona como condição de possibilidade para a manutenção do capitalismo – se manifesta de modos diferentes a partir no eixo centro-periferia do sistema capitalista global.
Mirian Monteiro Kussumi
doaj   +1 more source

As consequências imediatas e a longo prazo da pandemia Covid-19 na educação em Portugal:

open access: yesCidades, Comunidades e Território, 2023
A pandemia gerada pela Covid-19 teve impacto em diversas áreas, desocultando e intensificando as desigualdades sociais. O presente artigo analisa a influência da pandemia na reprodução de desigualdades sociais na educação, partindo do reconhecimento do ...
Inês Tavares
doaj  

Representação social e ideologia: conceitos intercambiáveis? Social representation and ideology: interchangeable concepts?

open access: yesPsicologia & Sociedade, 2002
O objeto deste artigo é a Teoria das Representações Sociais. Seu objetivo constitui também sua hipótese: a possibilidade de aliar a leitura psicossocial a uma leitura sociológica do conceito de Moscovici, articulando-o com os conceitos de ideologia e ...
Roseane Xavier
doaj   +1 more source

Molecular and Serological Detection of Coxiella burnetii in Small Ruminants in Northeastern Brazil

open access: yesVeterinary Medicine and Science, Volume 12, Issue 2, March 2026.
• Serology indicates that one‐third of the sheep and goats had previously been infected with Coxiella burnetii. • qPCR analysis revealed the ongoing presence of C. burnetii in all evaluated flocks, each with a previous history of reproductive disorders. • These results indicate the need for preventive measures and control of C.
Ana Karoline Sousa Mendes Simas   +7 more
wiley   +1 more source

Cytologic Grading of Canine Mammary Tumors by Robinson's System Adapted to Romanowsky‐Type Rapid Staining: Prognostic Implications

open access: yesVeterinary Clinical Pathology, Volume 55, Issue 1, Page 55-67, March 2026.
ABSTRACT Background Mammary neoplasms are a major concern in intact female dogs, and cytologic examination is routinely used for initial screening. Although the adaptation of Robinson's cytologic grading system to canine species has been scarcely explored, it shows prognostic potential, particularly when correlated with other clinical and pathologic ...
Kaian F. Cavalcante   +6 more
wiley   +1 more source

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