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Further notes on the natural history of the South American pepper frog, Leptodactylus labyrinthicus (Spix, 1824) (Anura, Leptodactylidae)
Silva, WR.;Giaretta, AA.;
Brazilian Journal of Biology , 2008, DOI: 10.1590/S1519-69842008000200024
Abstract: leptodactylus labyrinthicus tadpoles reach a large size in the nest through consumption of trophic eggs. we previously suggested that the trophic eggs are laid just after amplexus has finished, but our new data do not support this hypothesis. we also present further details on the natural history of the species with regard to breeding activity, spawning site, retreats and the ability of tadpoles in preying upon fully-growth heterospecific tadpoles. we also show that the tadpoles are mainly nocturnal and take diurnal refuges. we collected the data in brazil in three localities within the cerrado biome. we examined burrows used by l. labyrinthicus males, verified if females still contained mature eggs just after released from amplexus, and tested the ability of tadpoles in preying fully-growth heterospecific tadpoles. field observations and experiments were conducted on tadpole activity time, hiding behaviour and level of susceptibility to predation by the bird leaf-scrapers in four sheltering situations. reproduction could start before the first rains; this may be advantageous by allowing the tadpoles to exploit eggs of other frogs. we found one floating nest built in a temporary pool. the nest of the species is normally circumscribed in an excavated basin beside the water body. adult males were found during the day with their head-out of the entrance of underwater burrows, which were perforations through dense root mats beside calling/spawning sites. probably, these burrows in permanently water-filled soil are actively excavated by males. females released all their eggs during the amplexus, so trophic eggs are not produced by the currently-accepted mechanism. fully-grown heterospecific tadpoles were not preyed upon by l. labyrinthicus tadpoles, which can prey only slow-moving newly hatched ones. field tadpoles took shelter under mud/dead leaves during daylight and became exposed on the bottom at night. free-ranging leaf-scrapers removed dead leaves from a pool with
O ato de comer e as pessoas com Síndrome de Down
Giaretta, Andréa;Ghiorzi, Angela da Rosa;
Revista Brasileira de Enfermagem , 2009, DOI: 10.1590/S0034-71672009000300024
Abstract: this is en experience report lived in the health and nursing assistance projects of the post-graduate nursing master degree of the federal university of santa catarina as an interdisciplinary subject, and it was done with down's syndrome people, concentrating in their rationality and imaginary. we tried to build with these people and their families an individualized nutritional systematization that contributes to their personal independence in the daily practice of the act of eating. the postulates of symbolic interactionism guided this practice and established a connection with the methodological instruments of sensible listening and observation, besides playful activities. it was evident that the first meaning of the act of eating is built in the family and reinforced in the social life.
Reproductive behavior of Cycloramphus dubius Miranda-Ribeiro (Amphibia, Anura, Leptodactylidae)
Giaretta, Ariovaldo A;Cardoso, Ad?o J;
Revista Brasileira de Zoologia , 1995, DOI: 10.1590/S0101-81751995000200002
Abstract: cycloramphus dubius miranda-ribeiro. 1920 is a frog species from the coastal atlantic forest in southeastern brazil. it uses waterfalls of forested rivulets as breeding sites. the eggs are placed outside of water, between rock crevices or roots constantly wetted by water dripping. clutches have about 60 eggs, and the tadpoles grow attached to rocks, out of water. males of this species exhibit parental care, biting and/or pushing away strange objects approaching the egg masses. two types of calls were identified in the spectrograms. the "advertisement calls" consist of juxtaposed pulses lasting 200ms; the "aggressive calls", also have the short pulses structure, and last around 300ms. the aggressive calls are emitted during territorial invasion.
Reproductive behavior of Leptodactylus mystacinus (Anura, Leptodactylidae) with notes on courtship call of other Leptodactylus species
Oliveira Filho, Júlio C. de;Giaretta, Ariovaldo A.;
Iheringia. Série Zoologia , 2008, DOI: 10.1590/S0073-47212008000400015
Abstract: here we present data on the reproductive behavior of leptodactylus mystacinus (burmeister, 1861), including details on courtship behavior. we also describe and compared the courtship calls of l. mystacinus, l. furnarius sazima & bokermann, 1978 and leptodactylus sp. (l. aff. andreae). field works were conducted in uberlandia (central brazil). during courtship, a female approaches a calling male and is led to a previously excavated chamber; a female can approach a silent male that beat his hands and/or feet on the ground as well. the courtship call of l. mystacinus consists of one single arch-shaped note (duration = 0.04 s) repeated 258 times per minute; the courtship calls of l. furnarius (0.06 s, 84 times per minute) and leptodactylus sp. (0.15 s, 5 times per minute) also are arch-shaped. the courtship behavior of l. mystacinus is similar to that of other species of the l. fuscus (schneider, 1799) group; unique to it is that males can beat his hands and/or feet on the ground while courting. the male behavior of conducting the female to a previously excavates chamber and the arch-shaped courtship call may represent other shared derived features of members of the l. fuscus group, including the former adenomera species.
Reproductive biology of Hyla goiana (Anura, Hylidae)
Menin, Marcelo;Silva, Rodrigo A.;Giaretta, Ariovaldo A.;
Iheringia. Série Zoologia , 2004, DOI: 10.1590/S0073-47212004000100008
Abstract: male-male and male-female interactions, reproductive habitat, and vocalizations of hyla goiana b. lutz, 1968 a member of h. polytaenia species group, are described. three groups of calling males were surveyed along a small stream, at the esta??o de pesquisa e desenvolvimento ambiental de galheiro, perdizes municipality, state of minas gerais, brazil. the mean distance between the nearest calling neighbors was 2.7 m, in accordance with an uniform distribution. clutches (mean 180 eggs) were deposited in the stream, submerged and attached to plants. in two observed courtships the female moved towards a calling male that rapidly clasped her. in the male-male interaction, the males emitted advertisement and encounter calls and then engaged in physical combat. the males have a prepollical fang-like spine on each hand and several of them were observed with scratches on dorsum. the advertisement call consists of alternating harsh notes and a trilled of brief notes. the frequency of the call is lower than that of h. aff. polytaenia and h. cipoensis b. lutz, 1968. the clutch characteristics of h. goiana are similar to those described for h. polytaenia cope, 1870 and h. cipoensis.
Sele??o de sítios de oviposi??o em anuros (Lissamphibia)
Silva, Wagner Rodrigues da;Giaretta, Ariovaldo Ant?nio;
Biota Neotropica , 2008, DOI: 10.1590/S1676-06032008000300021
Abstract: oviposition site selection is a kind of habitat selection in which the females choose egg-laying sites that maximize their reproductive success. in the present review, we compiled the main conclusions of major studies on this theme that used frogs as model organisms. in the literature, three main lines of investigations were recognized: 1) multiple factor analyses in natural habitats- within the breeding site, places with eggs/tadpoles are compared with unused sites, testing several abiotic and biotic factors that could potentially influence female's choice; 2) experiments with pools arranged in replicated blocks (treatments/control) to simulate oviposition sites differing in quality and 3) quantification of reproductive events associated with experimental manipulations in the field. effectively, females of several frog species select oviposition sites more favorable to survival and development of eggs and tadpoles. in general, the female choice depends on the abundance and quality of potential egg-laying sites and on her discriminatory ability. female choices usually mirror the main risks to survival and growth of the offspring, but discriminatory power is not absolute and partial or total losses of clutches and tadpoles may occur, most of them resulting from desiccation and predation. the sensory mechanisms that females use to discriminate the conditions of potential oviposition sites remain poorly known and unexplored. besides affecting the parental reproductive success, the selective behavior potentially influence population dynamics and community structure by promoting habitat segregation among competitive species or prey-species and their predators.
Courtship, vocalization, and tadpole description of Epipedobates flavopictus (Anura: Dendrobatidae) in southern Goiás, Brazil
Costa, Ronan Caldeira;Facure, Kátia Gomes;Giaretta, Ariovaldo Antonio;
Biota Neotropica , 2006, DOI: 10.1590/S1676-06032006000100006
Abstract: epipedobates flavopictus is a diurnal, aposematic dendrobatid with a wide distribution in seasonal wet tropical regions of brazil. we describe the daily period of vocalization, advertisement call, courtship behavior, and tadpole of e. flavopictus from a previously unknown population in southern goiás and compare theses features with that of other populations. studies were carried out in november (2004) and february (2005). we counted the number of calling males and duration of calling bouts in the morning and evening periods. the advertisement call was recorded with a digital recorder. tadpole description was based on specimens collected in pools. males called from well-illuminated sites such as rocky fields, rain channels, and borders of riverine forests. in november, males vocalized daily during two distinct periods, between 04:30 h and 10:00 h and between 16:30 h and 20:00 h. morning temperature varied between 20-23oc and humidity from 79-89%; during evening varied between 24-27oc and 54-82%. in the middle of the day, temperature reached 36oc and humidity 40%. during the morning, call activity was almost uninterrupted, in the evening calling bouts lasted around 9 min. in february, even with the occurrence of rainfall and temperatures similar to that of november no frog vocalized. the advertisement call is composed by a single note with 7-8 pulses with frequency ascending slightly from 3.20 to 4.05 khz. note duration was 144 ms, and between note intervals is 292 ms. notes are given at a rate of 139 per minute. upon observing the female, the male began to emit courtship call. the female approached the male and touched him laterally with her snout. the male moved forward and raised his hindquarters by stretching his hind legs. while leading the female, the male continued to give courtship and advertisement calls. the male clasped the female in axillary amplexus, and the pair entered a hole in a bank. the female deposited eggs on the surface of the soil, spreading th
Desafios e condicionantes da participa??o social na gest?o ambiental municipal no Brasil
Giaretta, Juliana Barbosa Zuquer;Fernandes, Valdir;Philippi Jr., Arlindo;
Organiza??es & Sociedade , 2012, DOI: 10.1590/S1984-92302012000300009
Abstract: this article aims to present the factors that influence the success or failure of social participation in environmental management by municipalities. through a literature review and analysis of works on this subject in brazil, a set of factors was identified that influence social participation in municipal environmental management in brazil> this includes the issue of disclosure and access to information, education for individual performance of collective participation, perception of problems / local demands as an incentive for participation, identity and local values, and difficulty accessing participatory institutions. these results are in line with the literature on the subject.. it raises questions such as: how can you consider society's participation in this process without information? without education and training? without improving the area? without any decentralization of power? without integration, coordination and partnership among government sectors themselves and with civil society? thus, it is hoped that this research provides support for the advancement of municipal environmental management processes based on social participation.
Sementes nocivas que ocorreram em amostras de sementes de azevém (Lolium multiflorum), analisadas no Rio Grande do Sul nos anos de 1978 e 1979
Giaretta, H.;Jamardo, A.;Catalogne, E.V.A.;
Planta Daninha , 1984, DOI: 10.1590/S0100-83581984000100001
Abstract: this paper presents a quality record of rye-grass seeds produced in rio grande do sul or imported from other countries. it refers to the presence of weeds in ryegrass during 1978 and 1979. these record were obtained in the analysis bulletins at the seed analysis laboratory of the instituto de pesquisas agron?micas (ipagro) rio grande do sul°brasil and in those from other institutions. this state produced 74% of 2.319 t analysed seeds and 26% come from other places in 1978. in 1979 4.772 t were registred, 99,6% from here and 0,4% from outside. the percentage of ryegrass seeds contaminated with weed seeds produced in the state, in 1978, were 61,5% and 45,6% in the imported seeds. in 1979 these values were 60,0% and 29,4%, respectively. the commonest seeds of weed species that were found among the samples, in the seeds produced at rio grande do sul, in 1978 were: silene gallica, setaria geniculata, anthemis cotula, digitaria adscendens and echinochloa spp. in 1979 the weeds were: amaranthus spp, silene gallica and setaria geniculata. in seeds imported from other countries we found, in 1978, sida spp and rumex spp; in 1979 setaria geniculata, echinochloa spp and solanum spp.
Desafios e condicionantes da participa o social na gest o ambiental municipal no Brasil
Juliana Barbosa Zuquer Giaretta,Valdir Fernandes,Arlindo Philippi Jr.
Organiza??es & Sociedade , 2012,
Abstract: Este artigo tem por objetivo apresentar análise dos fatores que condicionam o sucesso ou fracasso da participa o social junto à gest o ambiental nos municípios brasileiros. Por meio de levantamento e análise bibliográfica do que já se produziu sobre este tema no Brasil, foi identificado um conjunto de fatores condicionantes da participa o social na gest o ambiental municipal brasileira, destacando-se, como os mais citados: a quest o da divulga o e acesso às informa es; educa o básica e cidad ; percep o de demandas locais; identidade e valoriza o local; e dificuldades de acesso às institui es participativas. Esses resultados v o ao encontro de uma concordancia na literatura sobre o tema em quest o, pois como é possível pensar a participa o da sociedade neste processo sem informa o? Sem educa o e capacita o? Sem valoriza o do território? Sem descentraliza o do poder? Sem integra o, articula o e parceria dos setores do governo entre si e com a sociedade civil? Assim, espera-se com esta pesquisa fornecer subsídios para avan o dos processos de gest o ambiental municipal fundamentado na participa o social. ----- Challenges and Social Constraints of Participation in Municipal Environmental Management in Brazil ----- ABSTRACT ----- This article aims to present the factors that influence the success or failure of social participation in environmental management by municipalities. Through a literature review and analysis of works on this subject in Brazil, a set of factors was identified that infl uence social participation in municipal environmental management in Brazil. This includes the issue of disclosure and access to information, education for individual performance of collective participation, perception of problems/local demands as an incentive for participation, identity and local values, and difficulty accessing participatory institutions. These results are in line with the literature on the subject. It raises questions such as: How can you consider society's participation in this process without information? Without education and training? Without improving the area? Without any decentralization of power? Without integration, coordination and partnership among government sectors themselves and with civil society? Thus, it is hoped that this research provides support for the advancement of municipal environmental management processes based on social participation.
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