Programa de Pós-Graduação em Zoologia - PPGZOOL/ICB
URI Permanente desta comunidadehttps://repositorio.ufpa.br/handle/2011/2343
O Programa de Pós-Graduação em Zoologia (PPGZOOL) do Instituto de Ciências Biológicas (ICB) foi consolidado como um convênio entre Universidade Federal do Pará (UFPA) e Museu Paraense Emílio Goeldi (MPEG).
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Navegando Programa de Pós-Graduação em Zoologia - PPGZOOL/ICB por Orientadores "GALATTI, Ulisses"
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Item Acesso aberto (Open Access) Biologia reprodutiva e hábito alimentar de Dendrophryniscus minutus (Melin, 1941)(Amphibia : Bufonidae) na Floresta Nacional de Caxiuanã, Pará(Universidade Federal do Pará, 2003-06) TRAVASSOS, Alessandra Elisa Melo; GALATTI, Ulisses; http://lattes.cnpq.br/1040132527458660This study examined reproductive characteristics, nutritional status and feeding habits in the litter anuran Dendrophryniscus minutus through individuals collected in the Estação Cientifica Ferreira Pena, Caxiuanã National Forest from April 1997 to April 1998. In a sample of 166 specimens were measured snout - vent length (SVL), mass of fat bodies, diameter, mass and number of ova in females and testis volume in males. The feeding habit in this species was also determined through analyses of stomach contents. Population structure showed a pattern with most adult individuals, including gravid females, in the rainy months, and juvenile recruitment in the beginning of the dry season. Similarly, the diameter and mass ova in the mar', used as indexes of gonadal development stage, were greater in the rainy season. Among males, the biggest testis volume also appeared in february and april, but there was no evident pattern of correlation to rainfall. Food consumption also did not show any pattern in variation along months and it was not correlated to fat mass. Fat bodies measurements were positively correlated to ova development in females indicating that fat accumulation and gonadal development may occur simultaneously. The diet in specie was composed for ants, termites and mites, terrestrial invertebrates in a great number in a litter in the studied area.Item Acesso aberto (Open Access) Colonização por anfíbios e lagartos de áreas reflorestadas no Platô Saracá, região de Porto Trombetas-Pará(Universidade Federal do Pará, 2008) SARMENTO, João Fabrício de Melo; GALATTI, Ulisses; http://lattes.cnpq.br/1040132527458660Few studies have considered faunal colonization of reforested areas after mining. To determine patterns of colonization of reforestation areas in Porto Trombetas, Pará, we examined species composition, richness, abundance and biological characteristics of amphibian and lizard species. Also I evaluated the effect of vegetation structure and distance to native forests on the community of amphibians in reforested areas. Amphibians and lizards were sampled along eight occasions in four-eight reforestation areas and four areas of native forests through active search and using artificial ponds for amphibian reproduction. Twenty species of amphibians and 20 species of lizards were registered, with 14 species of amphibians and 11 species of lizards in reforestations and 19 species of amphibians and 16 species of lizards in native forests. Among amphibians, Leptodactylus sp., Osteocephalus oophagus e Allobates femoralis were the most abundant species in the two environments. Among lizards, Gonatodes humeralis and Leposoma guianense were the most abundant species in reforestations and native forests, respectively. Amphibians with terrestrial reproduction or which use small temporary ponds to spawn and arboreal lizards were the most abundant groups in the reforested areas. Fossorial and semifossorial amphibians and litter lizards were the main absent groups in the reforested areas, suggesting that the current stage of vegetation succession does not offer appropriate microhabitats for some species. Species richness of amphibians was higher in areas with larger canopy cover. Areas with larger canopy cover had also higher abundance of Leptodactylus sp., A. femoralis and O. oophagus. Only four species of amphibians have used the artificial ponds for spawning and there was no significant relationship between the number of species that used the ponds and the distance to native forest or the canopy cover. Osteocephalus oophagus spawn in ponds most farer and A. femoralis in ponds closer to the native forest. Results show that amphibian and lizard fauna in reforestation areas is a subgroup of the native forest fauna and encompasses forest species which indicate the relative importance of these areas for the conservation of the local fauna.Item Acesso aberto (Open Access) Composição e diversidade de serpentes em um mosaico de habitats no município de Urbano Santos, Maranhão(Universidade Federal do Pará, 2003-04-15) LIMA, Jucivaldo Dias; GALATTI, Ulisses; http://lattes.cnpq.br/1040132527458660This study presents results of a year of field observations on the snake fauna sampled in a habitat mosaic ecompassing flooded and non-flooded forest types, eucalyptus plantations and open vegetation areas, at Urbano Santos, Maranhão State of Brasil. The area is covered by Savanna vegetation and the climate is tropical megathermical, with annual rainfail around 1800mm. The yaer of study (2001) was drier than average rainfall (1197.5mm). Sample were made from January to December 2001, during 24 field trips, lasting for days each 15 day period. Sampling effort was 768h/oberver including diurnal and nocturnal visual search. Each habitat was sampled by randorn linear transect chosen by chance. During the study, 114 snakes belonging to six families, 27 genera and 32 species were captured. For each species data smout-vet length, ativity period, juvenile presence, spatial distribution and microhabitat are presented. Among the 32 species registred, six were new record for Maranhão State (Apostolepis cearensis, Helicops leopardinus, Oxyrhopus trigeminus, Psomophis joberti, Waglerophis merremíí e Micrurus ibiboboca). Among the species registered, 40.1% were arboreal, 25.0% were subterraneous, 21.9 % terrestrial and 12.5% aquatic, even though some species occupied more than one microhabitat. Most species occurred in flooded and non-flooded forests, and open vegetation areas. In general, similarity between habitats was low; only the non-flooded forest, and open vegetations areas shared more than 60% of species. Estimates of species richness according to various estimators, indicated that the number of species observed was lower than expected, varying between 38 (bootstrap) and 58 (Chao 2). Compementarity between the habitat showed more similarity between flooded and non-flooded forest to open vegetation area. The sanke fauna in the area appears to be most similar to that recorded from the Ceará State mountaing range. The results represent the first contribution to the knowledge of the snake diversity in the region and offer first data for future projects on monitoring snake fauna and habitat status in the area.Item Acesso aberto (Open Access) Composição e riqueza de espécies de anuros (Amphibia) em fragmentos florestais no Lago de Tucuruí, Pará(Universidade Federal do Pará, 2006) LIMA, Janaina Reis Ferreira; GALATTI, Ulisses; http://lattes.cnpq.br/1040132527458660Habitat loss and forest fragmentation represent serious risk to anuran species maintenance in Amazonian. Herein, we determine composition, richness and abundance of anuran species in forest fragments at two Zones of wildlife protection (ZWP) established at the Tucuruí dam, east Pará state. Anuran fauna was sampled through transects at twelve fragments of different sizes, distributed along the two ZWP, the first on the right (ZWP-R) and the second on the left (ZWP-L) edge of the lake. Frogs were registered through active search and pitfall trap captures. From January to July 2005 we registered 2370 individuals from 35 anuran species. Thirty species were found in the ZWP-L (13 exclusive species) and 22 in the ZWP-R (five exclusive species). Seven estimators of species richness were obtained with the use of EstimateS® Software. For the most estimators, curves of species accumulation trended to stability. However, estimates of species richness varied among the estimators, with bootstrap the lowest (38) and the Jacknife the highest (45) values. The combination of the species observed here with the nine species registered in the Herpetological Collection of the Museu Paraense Emílio Goeldi resulted in 44 species, suggesting that estimators for species richness had a reasonable performance. Similarity of anuran species was higher among fragments from the same edge of the lake than from similar size fragments. Species richness was positive and significantly related to size, but not to distance from the fragment from continuous forest. There was no significant relationship between number of individuals observed in the fragment and the fragment size. Differences in the species composition between the two ZWP suggest certain complementariety of the two unities to the conservation of the local anuran fauna, as well the need of a higher effort of anuran sampling, principally through the increase of study area, for the best comprehension of these differences and their implications.Item Acesso aberto (Open Access) Composição, riqueza e abundância de espécies de anfíbios na região do médio rio Xingú(Universidade Federal do Pará, 2009) LIMA, Amanda André; GALATTI, Ulisses; http://lattes.cnpq.br/1040132527458660This study aimed to identify the amphibian fauna of different habitats in the region of the Middle Rio Xingu. We selected six sites, with samples taken from three breaths, between November 2007 and March 2008, totaling 48 days. We identified six types of habitats in the region: terra-firme forest, seasonally flooded forest (lowland), banks of the river, "pedral”, pond area and area with antropic disturbance. For data collection were used two field sampling methods: pitfall traps with drift fences and visual surveys. The traps were installed only in areas of terra-firme forest, while visual survey was employed in all types of habitats identified. The sampling resulted in the record of 56 species of amphibians and eight species were identified and recorded in previous studies in the area. Species diversity and richness were higher in Caracol site, where the predominance of the terra-firme forest was observed, and lower in the Ilha Grande, which is dominated by seasonally flooded forest. Nine reproductive modes were recorded in the study area, all found in the terra-firme forest and only three in the "pedral" which may reflect the low environment heterogeneity of this area. Two tests of similarity were performed to compare study sites, one for each method of collection. Similarity analysis of the data from visual surveys showed more similarity for species composition between areas of terra-firme forest than the other habitats. Cluster analysis between this study and other surveys conducted in the Amazon grouped the study area to another area also located in the Middle Xingu.