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Search Results: 1 - 10 of 39570 matches for " Athiê Jorge Guerra;El-Deir "
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Desenvolvimento ovariano de Plagioscion squamosissimus (Heckel, 1840) (Actinopterygii, Perciformes), no reservatório de Pedra, Rio de Contas, Bahia
Félix, Renata Triane da Silva;Severi, William;Santos, Athiê Jorge Guerra;El-Deir, Ana Carla Asfora;Soares, Maria Goretti;Evêncio Neto, Joaquim;
Biota Neotropica , 2009, DOI: 10.1590/S1676-06032009000300012
Abstract: this study aimed to characterize oocyte organization and maturation stages of plagioscion squamosissimus ovary. samples were collected bimonthly in pedra reservoir, contas river (ba), between november 2004 and september 2006. microscopic analyses were made on histological cuts stained with hematoxylin - eosin - phloxine and gomori trichromic mixture. five maturation stages were identified through macro and microscopic analysis. gonad coloration varied according to maturation stages. six phases of oocyte development were identified: oogonia and perinucleolar, vitellogenic and early lipidic, vitellogenic and intermediate lipidic, vitellogenic and advanced lipidic, and pre-ovulation. cell structures were similar to those found among marine species, such as oil droplets fusion at later developmental stages and pre-ovulatory hydration. such features may be explained by the marine origin of sciaenidae, thus suggesting the need of more detailed studies for understanding the origin, development and function of these structures along oocyte developmental stages.
Natural Products from Ethnodirected Studies: Revisiting the Ethnobiology of the Zombie Poison
Ulysses Paulino Albuquerque,Joabe Gomes Melo,Maria Franco Medeiros,Irwin Rose Menezes,Geraldo Jorge Moura,Ana Carla Asfora El-Deir,R mulo Romeu Nóbrega Alves,Patrícia Muniz de Medeiros,Thiago Antonio de Sousa Araújo,Marcelo Alves Ramos,Rafael Ricardo Silva,Alyson Luiz Almeida,Cecília de Fátima Castelo Almeida
Evidence-Based Complementary and Alternative Medicine , 2012, DOI: 10.1155/2012/202508
Abstract: Wade Davis's study of Haitian “zombification” in the 1980s was a landmark in ethnobiological research. His research was an attempt to trace the origins of reports of “undead” Haitians, focusing on the preparation of the zombification poison. Starting with this influential ethnopharmacological research, this study examines advances in the pharmacology of natural products, focusing especially on those of animal-derived products. Ethnopharmacological, pharmacological, and chemical aspects are considered. We also update information on the animal species that reportedly constitute the zombie poison. Several components of the zombie powder are not unique to Haiti and are used as remedies in traditional medicine worldwide. This paper emphasizes the medicinal potential of products from zootherapy. These biological products are promising sources for the development of new drugs.
Ichthyofauna Used in Traditional Medicine in Brazil
Ana Carla Asfora El-Deir,Carolina Alves Collier,Miguel Santana de Almeida Neto,Karina Maria de Souza Silva,Iamara da Silva Policarpo,Thiago Antonio S. Araújo,R mulo Romeu Nóbrega Alves,Ulysses Paulino de Albuquerque,Geraldo Jorge Barbosa de Moura
Evidence-Based Complementary and Alternative Medicine , 2012, DOI: 10.1155/2012/474716
Abstract: Fish represent the group of vertebrates with the largest number of species and the largest geographic distribution; they are also used in different ways by modern civilizations. The goal of this study was to compile the current knowledge on the use of ichthyofauna in zootherapeutic practices in Brazil, including ecological and conservational commentary on the species recorded. We recorded a total of 85 species (44 fresh-water species and 41 salt-water species) used for medicinal purposes in Brazil. The three most commonly cited species were Hoplias malabaricus, Hippocampus reidi, and Electrophorus electricus. In terms of conservation status, 65% of species are in the “not evaluated” category, and 14% are in the “insufficient data” category. Three species are in the “vulnerable” category: Atlantoraja cyclophora, Balistes vetula, and Hippocampus erectus. Currently, we cannot avoid considering human pressure on the population dynamics of these species, which is an essential variable for the conservation of the species and the ecosystems in which they live and for the perpetuation of traditional medical practices.
Description of Atherinella brasiliensis (Quoy & Gaimard, 1825) (Atheriniformes: Atherinopsidae) larvae from the Jaguaribe River estuary, Itamaracá island, Northeastern Brazil
Fran?a, Elton J.;Severi, William;Castro, Maviael F.;Medeiros, Tatiane N.;El-Deir, Ana Carla A.;
Neotropical Ichthyology , 2007, DOI: 10.1590/S1679-62252007000300016
Abstract: the present study describes the external morphology and morphometry of the initial development of atherinella brasiliensis, and contributes toward broadening knowledge on its biology. a total of 88 larvae and 14 juveniles were used to characterize the morphological development and analyze body proportions. fish with standard lengths (sl) from 1.4 to 77 mm were used in the study. larvae hatch at an average of 1.4 mm sl. in the preflexion stage, the larval body is enveloped by a finfold, which begins behind the head. pectoral fins are the first to be formed and preflexion larvae have four characteristic dendritic chromatophores on the head. the flexion stage begins at an average of 4.4 mm sl; dorsal and anal fins already exhibit pterygiophores and a terminal, somewhat up-turned mouth. at 6.8 mm sl, the flexion stage ends. in the postflexion stage, larvae present greater ossification of the dorsal and anal fin rays, exhibit pelvic fin buds and a darkening of lateral pigmentation. at an average of 8.8 mm sl, head pigmentation intensifies and pelvic fins exhibit conspicuous ossifying rays. larvae at 11.8 mm sl have all fins formed; the second dorsal fin is the last to be formed at an insertion point posterior to the anal fin. the juvenile period begins at approximately 12 mm sl. at this stage, a. brasiliensis has an anal fin located at the median portion of the body and the posterior end of pectorals surpasses the origin of pelvic fins, which are located at the midpoint between the pectoral and anal fins. scales are present on the dorsal-lateral region behind the head. the morphological features of a. brasiliensis herein described allow an adequate identification of its larvae and differentiate them from hemiramphid and other atheriniform larvae, thus broadening knowledge on the larval biology of the species.
Estrutura da assembléia de peixes de uma lagoa marginal desconectada do rio, no submédio Rio S?o Francisco, Pernambuco
Luz, Sandra Cristina Soares da;El-Deir, Ana Carla Asfora;Fran?a, Elton José de;Severi, William;
Biota Neotropica , 2009, DOI: 10.1590/S1676-06032009000300011
Abstract: samplings with various fishing devices were undertaken between march 2007 and february 2008, in the curralinho lake, a marginal pond located in the submedium s?o francisco river, aiming at evaluating the fish fauna composition after its isolation from the river channel and water depletion. a total of 4,638 specimens was collected, with a biomass of 129,782.84 g, distributed in 16 families and 47 species from the orders characiformes, cyprinodontiformes, siluriformes, perciformes, gymnotiformes and clupeiformes. characiformes were most abundant and 87.3% of the specimens were small (<100 mm) or medium-sized (<200 mm). among the species collected, 26.7% were constant, 35.6% accessory and 37.8% accidental. characidae encompasses most of the species and individuals, followed by acestrorhynchidae. moenkhausia costae, triportheus guentheri, pygocentrus piraya and prochilodus argenteus were present in all samples. invertivores and piscivores dominated quantitatively and their biomass indicate a predominance of predators, with detritivores presenting the second greatest biomass. resident species prevailed, with few individuals of migratory fish belonging to anostomidae and prochilodontidae families and salminus franciscanus. fish richness, diversity and equitability were relatively high throughout the period of study. it may be concluded that the curralinho lake is an important shelter, feeding and resting ground for the ichthyofauna, mainly for forage fish that serve as the basis of the trophic chain and fisheries′ sustainability. therefore, there is an urgent need of environmental policy and management practices development that would preserve habitat integrity and functionability of their role in the conservation of ichthyodiversity of this stretch of the s?o francisco basin.
Densidade de estocagem de alevinos da Tilápia "Oreochromis niloticus" (linhagem Chitralada) cultivada em tanques-rede
Kleber Alves Saraiva,Fabiana Penalva de Melo,Marisa de Oliveira Apolinário,Athiê Jorge Guerra Santos
Revista Brasileira de Saúde e Produ??o Animal , 2009,
Abstract: O objetivo deste trabalho foi avaliar densidades de estocagem de alevinos de tilápia (Oreochromis niloticus), linhagem Chitralada, em tanques-rede instalados no reservatório de Xingó. Foram utilizados 12 estruturas de tanques-rede de 5 m3, revestidos internamente com bols es de PVC de 4m3 (malha de # 4-8 mm), nas quais foram estocados alevinos de 0,85 g. Adotou-se um delineamento experimental inteiramente casualizado, com três tratamentos (800, 950 e 1.100 alevinos/m3) e quatro repeti es. Durante os primeiros 20 dias, a alimenta o constou de ra o comercial em pó (55% proteína bruta), fornecida oito vezes ao dia, a uma taxa de 12,5% da biomassa/dia, sendo em seguida substituída por outra, extrusada e desintegrada (45% de proteína bruta), numa taxa de alimenta o de 8-6,5%/dia. No final da fase de ber ário, com dura o de 54 dias, os alevinos foram contados, medidos e pesados. As variáveis de qualidade da água como temperatura, pH, oxigênio dissolvido, alcalinidade, dureza total, am nia total e nitrito, n o apresentaram diferen a significativa entre os tratamentos (P≥0,05). Do mesmo modo as variáveis de desempenho do cultivo como ganho de peso relativo (4.119%), taxa de crescimento específico (6,9%/dia), sobrevivência (93,2%) e convers o alimentar (1,04), n o diferiram estatisticamente entre os tratamentos (P≥0,05). Dessa forma pode-se concluir que na fase de alevinagem é possível estocar até 1.100 alevinos/m3 para a obten o de indivíduos de 30 gramas. Palavras-chave: tilápia; alevinos; densidades; tanques-rede.
Crescimento e sobrevivência da tilápia chitralada submetida a diferentes fotoperíodos
Bezerra, Katia Santos;Santos, Athiê Jorge Guerra;Leite, Maxwel Rozendo;Silva, Alexandre Magnun da;Lima, Misleni Ricarte de;
Pesquisa Agropecuária Brasileira , 2008, DOI: 10.1590/S0100-204X2008000600010
Abstract: the objective of this work was to assess the effect of photoperiod in the growth and survival of tilapia chitralada, oreochromis niloticus, during and after the sexual reversion. the work was carried out in 2006 and 2007, and divided into two experiments. in the first experiment, post-larvae of 0.031±0.0058 g and 1.24±0.096 cm were used, at the density of 1.5 post-larva l-1. the post-larvae were submitted to the following photoperiods: 0, 8, 12, 16, 24 hours of light and 12.5 hours of natural light, during 28 days. the fishes were fed with 45% crude protein balanced food, containing androgen hormone, at 20% of the total biomass, divided into four meals. sampling was done at the beginning and at the end of the experiment. in the second experiment, sex reverted fingerlings of 0.38±0.16 g and 2.81±0.40 cm were used. the experiment protocols were the same as in the former experiment, except for the stock density (0.33 fish l-1), food ratio (10% of the total biomass) and the experimental period (46 days). sampling was done every fifteen days. the photoperiod interfered more intensively in the survival of the tilapia post-larvae, and the natural light was the recommended photoperiod during the sexual reversion. the best survival rate of the fingerlings occurred in the 0-hour light group; regarding fingerling growth, however, better results in bodyweight and length were found in the other photoperiod groups. it seems that the photoperiod responses to survival and growth are related to fish age.
Crescimento do niquim (Lophiosilurus alexandri Steindachner 1876), em diferentes condi es de luminosidade e tipos de alimento = Niquim (Lophiosilurus alexandri Steindachner 1876) growth, in different luminosity conditions and types of food
Ruy Albuquerque Tenório,Athiê Jorge Guerra Santos,José Patrocínio Lopes,Eliane Maria de Souza Nogueira
Acta Scientiarum : Biological Sciences , 2006,
Abstract: O niquim Lophiosilurus alexandri é um peixe endêmico do rio S o Francisco e foi prejudicado após o represamento das águas, sendo uns dos peixes mais valorizados na regi o do Submédio e apresentando potencial para a piscicultura. O trabalho teve por objetivo avaliaro seu crescimento durante as fases ontogênicas iniciais, em diferentes condi es de luminosidade e tipos de alimento, fornecendo subsídios técnicos à piscicultura e aos programas de propaga o da espécie. O experimento foi realizado em incubadoras com luminosidades de 100% (L), 50% (ML) e 0% (SL) com quatro repeti es e dois critériosalimentares: plancton+ra o e Dendrocephalus brasiliensis+ra o. A Análise de Variancia (Anova) foi realizada para verificar o efeito de diferentes condi es de luz e de alimento sobre o comprimento dos niquins. O teste de Tukey (P<0,05) foi utilizado para verificar as diferen as entre as médias dos tratamentos. Houve diferen a significativa para o tratamento luz (ANOVALUZ: P=0,0030) e o teste de Tukey indicou o menor comprimento médio para o tratamento L. A maior média da última biometria foi 74,70±5,95 mm superior aos 25 mmobtidos em trabalho que n o obedeceu ao critério de luminosidade. Conclui-se que utilizando ra o para carnívoros o crescimento do niquim foi influenciado apenas pela luminosidade. Niquim Lophiosilurus alexandri is an endemic fish from the San Francisco River and was harmed after the damming up of the waters, being one of the most valuable fish in the Sub-medium region and presenting potential for pisciculture. This study aimed to evaluate its growth during the initial ontogenic phases, under different luminosity conditions and types of food, supplying technical subsidies to the pisciculture and to the species propagation programs. The experiment was conducted in incubators with luminosity at 100% (L), 50% (ML) and 0% (SL) with four repetitions and two alimentary criteria: plankton+ration and Dendrocephalus braziliensis+ration. The variance analysis (ANOVA) was carried out to verify the effect of different light conditions and food on the Niquins' length. The Tukey test (P<0.05) was used to verify the differences between the treatment's averages. There was a significantdifference for the light treatment (ANOVA LUZ: P=0.0030) and the Tukey test indicated the smaller average measurement for the L treatment. The greatest average of the last biometric taken was 74.70±5.95 mm much superior to 25 mm taken for the one that didnot obey the luminosity criterion. The conclusions pointed that by using carnivore's ration, the growth of Niquim was influenc
Birdwatching and ecological tourism
Samira Athiê
Biotemas , 2007,
Abstract: Birdwatching is practiced little in Brazil, because there are various impediments to its expansion, such as the infra-structure required, the deficiency of guides for the purpose, andmainly the lack of initiative in the educational ambit. However, this activity has a high potential for touristic attraction, essentially in tropical countries where the bird diversity is very great, and once exploited has the capacity to bring an expressive economic return, in addition to being a tool for environmental education and the conservation of biodiversity.
Acevedo Guerra,Jorge;
Revista de filosofía , 2010, DOI: 10.4067/S0718-43602010000100001
Abstract: in a brief initial presentation, i underline the importance of heidegger's thoughts and its acknowledgement by renowned thinkers and scientists. then, i refer to heidegger's thesis "science does not think"from the book what calls for thinking? or what is called thinking? in order to clarify this sentence, i use his lecture "science and reflection". possible explanations of the phrase in question are put aside, and i postulate that is better to think in another direction in order to better understand the thesis. this new direction introduces the difference between calculative thinking and reflection ("besinnung, besinnliches nachdenken: meditative thinking] and focuses on what heidegger understands as: being, essence, sense, essence of modern technology (ge-stew: enframing) and fourfold (geviert).
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