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| Registros recuperados: 39 | |
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| BISNETO,Pedro Ferreira; KAEFER,Igor Luis. |
| ABSTRACT The pitviper Bothrops atrox is a widely distributed and medically important snake in Amazonia. Given that the reproductive and feeding biology of snakes varies geographically, we aimed to characterize the natural history of individuals from the central and southwestern portions of the biome. We analyzed museum-preserved specimens collected in the region between the metropolitan areas of the Brazilian cities of Manaus and Porto Velho. We took morphometric measurements and performed the analysis of gonads and digestive tracts of 109 individuals. Females attain sexual maturity with larger body sizes. Adults of the species show pronounced sexual dimorphism in body size, with females being larger. The reproductive cycle, especially in males, appears to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diet; Natural history; Neotropics; Reproduction. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000200105 |
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| Gasper,André Luís de; Stehmann,João Renato; Roque,Nádia; Bigio,Narcísio C.; Sartori,Ângela Lúcia Bagnatori; Grittz,Guilherme Salgado. |
| ABSTRACT Herbaria represent irreplaceable repositories of biodiversity and are used to answer questions about conservation, ecology, systematics, and other sciences. In this sense, we characterize the infrastructure, human resources, and idiosyncrasies of Brazilian herbaria. To achieve this goal, curators were sent a structured and standardized questionnaire to gather information about herbaria. The Brazilian Herbaria Network listed 216 active herbaria in the year 2018, of which 139 answered the questionnaire. These herbaria hold 6,741,469 samples in their collections and more than 39,000 type samples. Most herbaria are in federal universities (40.28 %). Only 24 % of the curators considered that their herbarium is valued by their institutions and 52 %... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity; Biological collections; Natural history; Public policies. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000200352 |
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| QUINTELA,FERNANDO M.; LOEBMANN,DANIEL. |
| Abstract: Herein we investigated diet, sexual dimorphism and reproductive biology of two sympatric congeneric species at the coastal Brazilian Pampa, Philodryas aestiva and P. patagoniensis. Analysis of the stomach content of the scansorial Philodryas aestiva revealed that it feeds mainly on Anura and small mammals, while it occasionally consumes Insecta, Squamata and Aves. The more terrestrial Philodryas patagoniensis presented a broader diet, composed mainly of Anura, Squamata and small mammals. Insecta and Actinopterygii were found in lower frequencies. In females of both species, snout-vent length was significantly larger than in males, while tail length/snout-vent length ratio was significantly higher in males. Males reach sexual maturity at smaller... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feeding habits; Natural history; Neotropical snakes; Fecundity; Reproductive cycle. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100633 |
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| Gisloti,Laura Jane; Uchoa,Manoel A.; Prado,Angelo. |
| Abstract Fruits of thirty-five cultivated native plant species (19 orders and 12 families) were sampled in farms of fruit production from two municipalities of São Paulo state, Brazil (January 2010 to March 2012) to evaluate species diversity of Neosilba flies. Thirty-one species of plants were the host for Neosilba species while four were not infested. Some aspects of the biology and patterns of species diversity, abundance, infestation rates, puparias viability and the interactions among species of frugivorous flies and their host plants were quantified. Seven species of Neosilba were reared: Neosilba bella Strikis & Prado (4 hosts), Neosilba certa (Walker) (4 hosts), Neosilba glaberrima (Wiedemann) (5 hosts), Neosilba inesperata Strikis & Prado... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hosts; Lance Flies; Lonchaeid; Natural history. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100203 |
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| ALMEIDA,C. E.; RAMOS,E. F.; GOUVÊA,E.; CARMO-SILVA,M. do; COSTA,J.. |
| Ctenus medius Keyserling, 1891 is a common species in several spots of Mata Atlântica, however there is a great lack of studies in all aspects of its natural history. This work aims to elucidate aspects of ecotope preference compared to large spiders, and to provide data on the development of chromatic patterns during its life cycle. The observations on the behavior of C. medius were done in the campus of Centro Universitário de Barra Mansa (UBM) by means of observations and nocturnal collections using cap lamps. For observations on the development of chromatic patterns, spiderlings raised in laboratory, hatched from an oviposition of a female from campus of UBM, and others spiderlings collected in field were used. The field observations indicate that: C.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ctenus medius; Ctenidae; Natural history. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000300015 |
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| Beltrán Rodríguez, Leonardo Alejandro. |
| Hintonia latiflora “quina amarilla” habita en el Bosque Tropical Caducifolio, es medicinal por lo que se comercializa la corteza interna. La recolecta es excesiva y las poblaciones están cada vez más distantes y escasas. No se cuenta con información biológica, ecológica y social que permita establecer criterios para la gestión y conservación de la especie, por ello, el presente estudio se desarrolló en Tlalcozotitlán, Guerrero, el sitio de cosecha comercial de quina. Se documentó la historia natural y antropógena de H. latiflora sustentada en la literatura científica y en observaciones de campo; se investigó la estructura poblacional, la influencia de la cosecha de corteza sobre caracteres arquitectónicos, reproductivos y en la densidad, además, se... |
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Palavras-chave: Quina amarilla; Historia natural; Factores físicos; Estructura poblacional; Corteza medicinal; Gestión comunitaria; Yellow quina; Natural history; Physical factors; Population structure; Medicinal bark; Community management; Botánica; Maestría. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/2183 |
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| Araldi,Rodrigo Pinheiro; Assaf,Suely Muro Reis; Carvalho,Rodrigo Franco de; Carvalho,Márcio Augusto Caldas Rocha de; Souza,Jacqueline Mazzuchelli de; Magnelli,Roberta Fiusa; Módolo,Diego Grando; Roperto,Franco Peppino; Stocco,Rita de Cassia; Beçak,Willy. |
| Abstract In the last decades, a group of viruses has received great attention due to its relationship with cancer development and its wide distribution throughout the vertebrates: the papillomaviruses. In this article, we aim to review some of the most relevant reports concerning the use of bovines as an experimental model for studies related to papillomaviruses. Moreover, the obtained data contributes to the development of strategies against the clinical consequences of bovine papillomaviruses (BPV) that have led to drastic hazards to the herds. To overcome the problem, the vaccines that we have been developing involve recombinant DNA technology, aiming at prophylactic and therapeutic procedures. It is important to point out that these strategies can be... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bovine papillomavirus (BPV); Bovine papillomatosis; Carcinogenesis; Natural history. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000100002 |
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| Ferretti,Nelson; Barneche,Jorge. |
| Two new species of Plesiopelma Pocock, 1901 from northern Argentina are described and diagnosed based on males and habitat descriptions are presented. Males of Plesiopelma paganoi sp. nov. differ from most of species by the absence of spiniform setae on the retrolateral face of cymbium, aspect of the palpal bulb. Plesiopelma aspidosperma sp. nov. differs from most species of the genus by the presence of spiniform setae on the retrolateral face of cymbium and it can be distinguished from P. myodes Pocock, 1901, P. longisternale (Schiapelli & Gerschman, 1942) and P. rectimanum (Mello-Leitão, 1923) by the separated palpal bulb keels and basal nodule of metatarsus I very developed. It differs from P. minense (Mello-Leitão, 1943) by the shape of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Taxonomy; Spiders; Natural history; Neotropical; Yungas. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000400007 |
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| Bernardo-Silva,Jorge S.; Von-Mühlen,Eduardo M.; Di-Bernardo,Marcos; Ketterl,Jochen. |
| We analyzed the alimentary tract of 66 specimens of Amphisbaena munoai Klappenbach, 1969 from the Serra do Sudeste, state of Rio Grande do Sul, southern Brazil. Forty specimens (60.6%) had prey items in their gut. The diet consisted mainly of small invertebrate prey, such as termites, insect larvae and ants. The most abundant prey item was termites, found in 62.5% of the non empty stomachs. The high number of individual prey items in the majority of stomachs, the small size of the regular prey items, and the absence of gut content in specimens of A. munoai kept alive for about two days, indicate that this species forages very frequently. The predominance of fossorial prey items and the occasional records of nomadic ants lead us to suggest that A. munoai... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amphisbaena munoai; Diet; Feeding behavior; Natural history; Southern Brazil. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212006000400014 |
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| Oliveira,Otto M. P.; Marques,Antonio C.. |
| The ecology of Eudendrium spp. from the Brazilian coast is poorly known, although it already proved to be useful and important as a tool to solve some taxonomical problems of the genus. The seasonality and reproduction patterns of a population of Eudendrium caraiuru Marques & Oliveira, 2003 were studied. Data were sampled from test panels immersed in the water off Cabelo Gordo de Dentro beach, in São Sebastião Channel, Southeastern Brazil, from July 1999 to July 2000, every three months. Eudendrium caraiuru was active throughout the study period. Reproductive peaks of the species were regulated by cold and low-salinity water, although part of the population always bore mature gonophores. In addition to morphological differences, ecological... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Population biology; Ecology; Natural history; Eudendrium caraiuru. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212005000300003 |
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| Quintela,Fernando Marques; Loebmann,Daniel. |
| ABSTRACT Lygophis flavifrenatus Cope, 1862 is a terrestrial dispsadid distributed in subtropical Brazil, Paraguay, Uruguay, and Argentina. Herein, we present data on sexual dimorphism and reproductive biology of this very poorly studied species. A total of 108 specimens (55 females, 50 males, three hatchlings with unidentified sex) from Brazilian states of Rio Grande do Sul, Santa Catarina and Mato Grosso do Sul were analyzed. Sexual dimorphism by size, body dimensions (tail length, head length, head width) and a number of ventral and subcaudal scales is not well marked in the species. Mature females attain the greater size and have a higher number of ventral scales than mature males. Mature males, in turn, presented longer tail, longer and wider head and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Natural history; Neotropical region; Subtropical domain; Squamata. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212019000100210 |
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| Tarifa,Teresa; Azurduy,Carola; Vargas,Renzo R.; Huanca,Noemí; Terán,Jehizon; Arriaran,Greissy; Salazar,Claudia; Terceros,Lenny. |
| We report four opportunistic field observations of a species of Abrocoma in Polylepis besseri woodlands in Cochabamba Department, Bolivia. These observations suggest four significant aspects of Abrocoma sp. natural history: 1) they have arboreal activity, 2) they may be specialized herbivores that feed on Polylepis leaves, 3) they have diurnal activity, and 4) they have docile behavior. These observations represent the first descriptions of aspects of the behavior and ecology of an abrocomid in Bolivia, and also suggest that Polylepis woodlands, a threatened Andean habitat, may provide an important habitat for specialized mammal herbivores such as Abrocoma sp. |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Abrocoma; Bolivia; Natural history; Polylepis woodlands. |
| Ano: 2009 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832009000100026 |
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| Registros recuperados: 39 | |
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