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Introduction: Although estimate models have been proposed to determine free-roaming (both stray and semi-domiciled) dog populations, to date, no study has focused on the three major border areas of Brazil. Therefore, the present study assessed the free-roaming dog population of Foz do Iguaçu, a major far-west Brazilian city located in a three-border area (Brazil, Argentina, and Paraguay), which is considered among the top five Brazilian tourist destinations. Methods: Capture-release sampling was performed in three phases with a 6-month interval and 10-day duration of each phase, totaling 18 months, between 2018 and 2019. Results: A total of 1,273 dogs were estimated in the first [95% confidence interval (CI), 468-2,078 dogs], 904 in the second (95%CI, 452-1,355 dogs), and 1,564 in the third (95%CI, 521-2,607 dogs) capture phases in this area, suggesting a population density of 18.4 dogs/km2 (6.1-30.6 dogs/km2, 95% CI). Of all free-roaming dogs, 452/1,125 (40.2%) were stray with no confirmed ownership or household, whereas 672/1,125 (59.8%) had a known origin, among which 625/1,125 (55.6%) were semi-domiciled with ownership or a household, 36/1,125 (3.2%) were neighborhood dogs with maintainers, and 11/1,125 (1.0%) were owned by recycling material collectors and homeless individuals. The majority of the 1,125 dogs (862/1,125; 76.6%) had an ideal body condition score. The high outdoor access of owned dogs is likely caused by cultural behavior. However, because 533/1,125 (47.4%) of the free-roaming dogs presented with clinical abnormalities, irresponsible ownership may have negatively impacted dog health and welfare. Discussion: This study was the first to establish the density of free-roaming dogs, the ratio of stray and semi-domiciled dogs, and their dynamics over time in Foz do Iguaçu. The findings may serve as a warning for the high level of dog outdoor access and irresponsible guardianship, which may negatively affect animal health and welfare, leading to diseases, accidents, trauma, and animal cruelty.

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Nanoparticle (NP) research is an area of scientific interest with high potential for application in biomedical, optical, and electronic fields. Due to their relatively large surface area compared to their mass, NPs can be more chemically reactive and change their reactive strength or other properties. NP-based drug delivery systems provide transport and an effective and controlled way to release the drugs. This work aimed to study the solubility and biological activity of nano-encapsulated copper metal complexes for the induction of toxicity and mortality in larvae of Aedes aegypti mosquitoes. After the nano-encapsulated metal complexes were prepared, the efficiency of this incorporation was determined by electron paramagnetic resonance, and toxicity bioassays were performed. The polymeric-based PLGA NPs encapsulating metal complexes exhibited high toxicity and specificity for target organisms (insect vectors, i.e., A. aegypti), with relatively less environmental impact and long-term control of their breeding.

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Capybaras are the largest rodents cohabiting with humans within urban and peri-urban green areas and are known by their prolificity. Surgical contraception has been recommended by official organizations as a way to control capybara populations in areas of zoonotic disease transmission, but little data are available concerning surgical anatomy. To obtain objective anatomical descriptions related to reproductive organs, eight female capybaras cadavers were dissected. The stratigraphy of the lateral (flank) and ventral, post-umbilical (on the linea alba) abdominal wall is described as well as the vascular anatomy of reproductive organs and their syntopy with the abdominal viscera. We commented on the access to the uterine tubes and uterine horns for each approach, and for better description of abdominal wall stratigraphy, abdominal ultrasonography was performed in one live female. All of the animals were provenient from "in situ" population management projects that were properly authorized. Similar abdominal wall stratigraphy was found in comparison to domestic mammals, with emphasis on a thick cutaneous muscle, a thin linea alba, and a large, loose cecum. The uterine tubes were easily accessed by bilateral laparotomy, allowing tubal removal/ligation procedures, while uterine horn exposure was more readily reached by a midline post umbilical celiotomy, favoring horn ligature and hysterotomy techniques. This study can help achieve more efficient contraceptive surgeries in capybaras, reducing the total surgical time and enhancing animal welfare.

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Stink bugs are major pests in diverse crops around the world. Pest management strategies based on insect behavioral manipulation could help to develop biorational management strategies of stink bugs. Insect mating disruption using vibratory signals is an approach with high potential for pest management. The objective of this work was to investigate the effect of conspecific female rival signals on the mating behavior and copulation of three stink bug species to establish their potential for mating disruption. Previously recorded female rival signals were played back to bean plants where pairs of the Neotropical brown stink bug, Euschistus heros, and two green stink bugs, Chinavia ubica and Chinavia impicticornis were placed. Vibratory communication and mating behavior were recorded for each pair throughout the experimental time (20 min). Female rival signals show a disrupting effect on the reproductive behavior of three conspecific investigated stink bug species. This effect was more clearly expressed in E. heros and C. ubica than in C. impicticornis. The likelihood of copulating in pairs placed on control plants, without rival signals, increased 29.41 times in E. heros, 4.6 times in C. ubica and 1.71 times in C. impicticornis. However, in the last case, the effect of female rivalry signals in copulation was not significant. The effect of mating disruption of female rival signals of the three stink bug species may originate from the observed reduction in specific vibratory communication signals emitted, which influences the duet formation and further development of different phases of mating behavior. Our results suggest that female rival signals have potential for application in manipulation and disruption of mating behavior of stink bugs. Further work needs to focus on the effects of female rival signals used in long duration experiments and also their interactions with chemical communication of stink bugs.

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Groups of capybaras (Hydrochoerus hydrochaeris) are currently frequent inhabitants of urban areas. The species participates in the transmission cycle of Brazilian spotted fever (BSF), a zoonosis that is caused by the bacteria R. rickettsii and transmitted by vector ticks. This has led to discussions on strategies to decrease the presence of this rodent through contraceptive methods and euthanasia, thus reducing their capacity to carry and transport ticks, which would be an important contribution to public health. Two condominiums and one business establishment in the interior of the state of São Paulo were used as case studies in the present investigation. All areas were classified by the Endemic Control Superintendence as risk areas for the transmission of BSF and presented the specie of ticks A. sculptum and A. dubitatum The objective of this study was to carry out sterilization procedures with animals that presented seropositive results for BSF. A total of 85 surgical procedures were conducted on immune capybaras, with authorization from DeFau/SMA-SP. For all procedures the animals were anesthetized with ketamine hydrochloride combined with xylazine and morphine. Two alpha males isolated themselves from the group after the vasectomy procedure, returning to their hierarchical position after 5 to 14 days. Population monitoring in the areas should be maintained indefinitely and conducting annual serological management until the natural death of these individuals. Tubal ligation, vasectomy and salpingo-oophorectomy were demonstrated to be simple and low-risk procedures in capybaras. These techniques assist in the population control of this species in enclosed areas with risk of BSF transmission, thus decreasing the need for euthanasia.(AU)

Grupos de capivaras (H. hydrochaeris) são atualmente habitantes frequentes de áreas urbanas. A espécie participa do ciclo de transmissão da febre maculosa brasileira (FMB), uma zoonose causada pela bactéria R. rickettsii e transmitida por carrapatos vetoriais. Isso levou a discussões sobre estratégias para diminuir a presença desse roedor por meio de métodos contraceptivos e eutanásia, reduzindo sua capacidade de carrear e transportar carrapatos, o que seria uma importante contribuição para a saúde pública. Dois condomínios e um estabelecimento comercial no interior de São Paulo foram utilizados como estudos de caso na presente investigação. Todas as áreas foram classificadas pela Superintendência de Controle Endêmico como áreas de risco para a transmissão da FMB e apresentaram a espécie do carrapato A. sculptum e A. dubitatum. O objetivo deste estudo foi realizar procedimentos de esterilização com animais que apresentaram resultados soropositivos para a FMB. Foram realizados 85 procedimentos cirúrgicos em capivaras imunes, com autorização do DeFau / SMA-SP. Para todos os procedimentos, os animais foram anestesiados com cloridrato de cetamina combinado com xilazina e morfina. Dois machos alfa se isolaram do grupo após o procedimento de vasectomia, retornando à sua posição hierárquica após 5 a 14 dias. O monitoramento populacional nas áreas deve ser mantido indefinidamente e conduzindo-se o manejo sorológico anual até a morte natural desses indivíduos. Foi possível demonstrar que a ligação tubária, vasectomia e salpingo-ooforectomia são procedimentos de baixo risco em capivaras. Essas técnicas auxiliam no controle populacional desta espécie em áreas fechadas e com risco de transmissão de FMB, diminuindo a necessidade de eutanásia.(AU)

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Background: The ovariosalpingohysterectomy (OSH) is one of the most performed surgeries in bitches often used in population control. Surgical techniques that decrease the chances of operative complications and cause less nociceptive stimulation and acute pain to the patient are highly sought after by veterinarians. We evaluated the inverted OSH technique (IT), which, after celiotomy, begins with the ligature execution, transection of the uterine body and subsequent ligation and ovarian disinsertion. The purpose of this investigation was to analyze aspects of IT execution in bitches, such as visceral manipulation, access to the uterus and ovaries, and surgical time compared to the traditional technique. Materials, Methods & Results: Inverted OSH was compared to the so-called traditional OSH technique, characterized by the initial removal of the ovaries followed by uterine section. The OSH techniques were performed in 24 healthy animals, with a body condition score of up to six (on a nine-point scale) in dogs aged between seven months and five years. All dogs were from the Birth Control Program of Dogs and Cats of the UFRRJ and were distributed into two groups: traditional technique (TT) and inverted technique (IT). Surgeries and anesthesia were carried out by the same veterinarian crew (surgeon, surgical assistant, and anesthesiologist). OSH techniques were evaluated by the surgeon and surgical assistant using semiquantitative analysis (multiple-choice questionnaire with closed questions that pointed scores related to the ease of uterine and ovarian manipulation, as well as to the level of manipulation of the intestinal and urinary vesicle) and qualitative descriptive methods (report of techniques with the opinion of surgeons and an external evaluator-veterinarian surgeon who attended surgeries). Also, the total surgical time and the indication of a positive analgesic response according to changes in the vital parameters observed by the anesthesiologist during specific moments of the operation were…(AU)

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Background: The ovariosalpingohysterectomy (OSH) is one of the most performed surgeries in bitches often used in population control. Surgical techniques that decrease the chances of operative complications and cause less nociceptive stimulation and acute pain to the patient are highly sought after by veterinarians. We evaluated the inverted OSH technique (IT), which, after celiotomy, begins with the ligature execution, transection of the uterine body and subsequent ligation and ovarian disinsertion. The purpose of this investigation was to analyze aspects of IT execution in bitches, such as visceral manipulation, access to the uterus and ovaries, and surgical time compared to the traditional technique. Materials, Methods & Results: Inverted OSH was compared to the so-called traditional OSH technique, characterized by the initial removal of the ovaries followed by uterine section. The OSH techniques were performed in 24 healthy animals, with a body condition score of up to six (on a nine-point scale) in dogs aged between seven months and five years. All dogs were from the Birth Control Program of Dogs and Cats of the UFRRJ and were distributed into two groups: traditional technique (TT) and inverted technique (IT). Surgeries and anesthesia were carried out by the same veterinarian crew (surgeon, surgical assistant, and anesthesiologist). OSH techniques were evaluated by the surgeon and surgical assistant using semiquantitative analysis (multiple-choice questionnaire with closed questions that pointed scores related to the ease of uterine and ovarian manipulation, as well as to the level of manipulation of the intestinal and urinary vesicle) and qualitative descriptive methods (report of techniques with the opinion of surgeons and an external evaluator-veterinarian surgeon who attended surgeries). Also, the total surgical time and the indication of a positive analgesic response according to changes in the vital parameters observed by the anesthesiologist during specific moments of the operation were

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Castration refers to induced sterility via physical, chemical, or hormonal methods. Chemical castration is an efficient and reliable technique in contrast to other sterilization procedures as it is less painful to physical methods and cost­effective to hormonal methods. Azadirachta indica (neem), is a charismatic plant as its leaves possess anti­inflammatory, anti­microbial, and anti­androgenic chattels. To abate the escalating human population in South Asia, neem oil and neem leaf extract have been effectively used as a contraceptive agent. The key determinant of the current study was to evaluate Neem as a chemical sterilizing agent, (either necrotic or apoptotic), in dogs injected intratesticular in comparison to a hypertonic saline solution. Pre­ and post­injection testicular width size and blood samples for serum testosterone levels were collected on alternative days. Results disclosed substantial changes in testicular width size, histopathological profile, and serum testosterone level. A non­significant (P > 0.05) pre­injection testicular width readings in contrast to a significant increase (P < 0.05) three days post­injection was noted in all the competitive groups. The mean values recorded for testicular width size at the end of the trial study via neem leaf extract, 30% HSS and, control groups were 27.7362 ± 2.3315mm, 30.9594 ± 4.6861mm, and 24.5023 ± 2.5387mm, respectively. A declining trend, regarding serum testosterone level being statistically significant (P < 0.05) was recorded in treated groups (A, B) in contrast to the control group (C) as the values were 1.5357 ± 0.7819ng, 1.2669 ± 0.9095ng, and 2.4517 ± 0.1827ng in groups A, B, and C, respectively. Histopathological findings advocated the presence of apoptotic bodies in the neem treated group whereas the presence of degenerated interstitial cells, necrosed seminiferous tubules, damaged germinal epithelium, and ceased spermatogenesis was also studied in both competitive groups. Thus, the apoptotic effect and anti­inflammatory property of neem leaf extract resulted in less painful castration and verified Azadirachta indica as a better substitute for chemical castration in contrast to hypertonic saline solution.(AU)

A castração consiste na indução da esterilidade por meio físico, químico ou hormonal. A castração química é uma técnica eficiente e confiável, em contraste com outros procedimentos de esterilização, pois é menos dolorosa para os métodos físicos e econômicos para os métodos hormonais. Azadirachta indica (neem), é uma planta carismática, pois possui folhas anti­inflamatórias, antimicrobianas e antiandrogênicas. Para diminuir a crescente população humana no sul da Ásia, o óleo de nim e o extrato de folhas de nim têm sido efetivamente usados como agente contraceptivo. O principal determinante deste estudo atual foi avaliar o Neem como um agente esterilizante químico (necrótico ou apoptótico) em cães injetados intratesticularmente em comparação com uma solução salina hipertônica. O tamanho da largura testicular pré e pós­injeção e as amostras de sangue para os níveis séricos de testosterona foram colhidas em dias alternados. Os resultados obtidos revelaram alterações substanciais no tamanho da largura testicular, perfil histopatológico e nível sérico de testosterona. Observou­se uma leitura não significativa (P> 0,05) da largura testicular da pré­injeção, em contraste com um aumento significativo (P <0,05) três dias após a injeção em todos os grupos competitivos.Os valores médios registrados para o tamanho da largura testicular no final do estudo via extrato de folhas de nim,HSS a 30% e grupos controle foram 27,7362 ± 2,3315 mm, 30,9594 ± 4,6861 mm e 24,5023 ± 2,5387 mm, respectivamente.Uma tendência decrescente, com relação ao nível sérico de testosterona sendo estatisticamente significante (P <0,05), foi registrada nos grupos tratados (A, B), em contraste com o grupo controle (C), pois os valores eram 1,5357 ± 0,7819ng, 1,2669 ± 0,9095ng e 2,4517 ± 0,1827ng nos grupos A, B e C, respectivamente. Os achados histopatológicos advogaram a presença de corpos apoptóticos no grupo tratado com nim, enquanto a presença de células intersticiais degeneradas, túbulos seminíferos necrosados, epitélio germinativo danificado e espermatogênese interrompida também foi estudada nos dois grupos competitivos. Assim, o efeito apoptótico e a propriedade anti­inflamatória do extrato de folhas de nim resultaram em uma castração menos dolorosa e confirmaram que a Azadirachta indica foi um melhor substituto para a castração química do que a solução salina hipertônica.(AU)

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ABSTRACT: Groups of capybaras (Hydrochoerus hydrochaeris) are currently frequent inhabitants of urban areas. The species participates in the transmission cycle of Brazilian spotted fever (BSF), a zoonosis that is caused by the bacteria R. rickettsii and transmitted by vector ticks. This has led to discussions on strategies to decrease the presence of this rodent through contraceptive methods and euthanasia, thus reducing their capacity to carry and transport ticks, which would be an important contribution to public health. Two condominiums and one business establishment in the interior of the state of São Paulo were used as case studies in the present investigation. All areas were classified by the Endemic Control Superintendence as risk areas for the transmission of BSF and presented the specie of ticks A. sculptum and A. dubitatum The objective of this study was to carry out sterilization procedures with animals that presented seropositive results for BSF. A total of 85 surgical procedures were conducted on immune capybaras, with authorization from DeFau/SMA-SP. For all procedures the animals were anesthetized with ketamine hydrochloride combined with xylazine and morphine. Two alpha males isolated themselves from the group after the vasectomy procedure, returning to their hierarchical position after 5 to 14 days. Population monitoring in the areas should be maintained indefinitely and conducting annual serological management until the natural death of these individuals. Tubal ligation, vasectomy and salpingo-oophorectomy were demonstrated to be simple and low-risk procedures in capybaras. These techniques assist in the population control of this species in enclosed areas with risk of BSF transmission, thus decreasing the need for euthanasia.

RESUMO: Grupos de capivaras (H. hydrochaeris) são atualmente habitantes frequentes de áreas urbanas. A espécie participa do ciclo de transmissão da febre maculosa brasileira (FMB), uma zoonose causada pela bactéria R. rickettsii e transmitida por carrapatos vetoriais. Isso levou a discussões sobre estratégias para diminuir a presença desse roedor por meio de métodos contraceptivos e eutanásia, reduzindo sua capacidade de carrear e transportar carrapatos, o que seria uma importante contribuição para a saúde pública. Dois condomínios e um estabelecimento comercial no interior de São Paulo foram utilizados como estudos de caso na presente investigação. Todas as áreas foram classificadas pela Superintendência de Controle Endêmico como áreas de risco para a transmissão da FMB e apresentaram a espécie do carrapato A. sculptum e A. dubitatum. O objetivo deste estudo foi realizar procedimentos de esterilização com animais que apresentaram resultados soropositivos para a FMB. Foram realizados 85 procedimentos cirúrgicos em capivaras imunes, com autorização do DeFau / SMA-SP. Para todos os procedimentos, os animais foram anestesiados com cloridrato de cetamina combinado com xilazina e morfina. Dois machos alfa se isolaram do grupo após o procedimento de vasectomia, retornando à sua posição hierárquica após 5 a 14 dias. O monitoramento populacional nas áreas deve ser mantido indefinidamente e conduzindo-se o manejo sorológico anual até a morte natural desses indivíduos. Foi possível demonstrar que a ligação tubária, vasectomia e salpingo-ooforectomia são procedimentos de baixo risco em capivaras. Essas técnicas auxiliam no controle populacional desta espécie em áreas fechadas e com risco de transmissão de FMB, diminuindo a necessidade de eutanásia.

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O objetivo deste artigo é analisar texto e imagem de publicações na rede social Instagram, com as hashtags #saúde e #corpo, a partir da noção deleuzeana de sociedade de controle. Para a coleta, utilizou-se o site Netlytic e, para a seleção dos dados, o software LibreOffice Calc. A metodologia consiste em uma análise enunciativa de perspectiva foucaultiana. Os resultados assinalam a presença de práticas que remetem às técnicas de confissão, de intervenção e de manipulação do corpo e às estratégias de controle para produção da saúde a partir da produção de verdades. Esses são indícios da operacionalização dos atuais mecanismos de vigilância da saúde e das estratégias de governamentalidade na sociedade de controle.

This article aims to analyze text and images posted on Instagram under the hashtags #saúde (Portuguese for health) and #corpo (body), based on Deleuze's notion of society of control. Data were collected using the website Netlytic and analyzed with the software LibreOffice Calc. The methodology consisted of statement analysis from a Foucauldian perspective. The results stress the presence of practices addressing techniques of confession, intervention, and body manipulation as well as control strategies to promote health based on production of truth. These are indications of how today's health surveillance mechanisms and governmentality strategies are operationalized in the society of control.

Este artículo tiene como objetivo analizar texto e imagen de publicaciones en la red social Instagram, con las hashtags #salud y #cuerpo, a partir de la noción deleuzeana de sociedad de control. Para la recolección de datos, fue utilizado el sitio Netlytic, y, para la selección de los datos, el software LibreOffice Calc. La metodología consiste en un análisis enunciativo de perspectiva foucaultiana. Los resultados apuntan a la presencia de prácticas que remiten a las técnicas de confesión, de intervención y de manipulación del cuerpo y a las estrategias de control para la producción de salud a partir de la producción de verdades. Esos son indicios de la operacionalización de los actuales mecanismos de vigilancia de la salud y de las estrategias de gubernamentalidad en la sociedad de control.

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