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Feeding habits of Stellifer rastrifer (Perciformes, Sciaenidae) at Guaratuba mangrove, Parana, Brazil
Chaves, Paulo de Tarso C.;Vendel, Ana Lúcia;
Brazilian Archives of Biology and Technology , 1998, DOI: 10.1590/S1516-89131998000400006
Abstract: feeding habits of stellifer rastrifer (perciformes, sciaenidae) at guaratuba mangrove, parana, brazil, were studied from february 1996 to february 1997. it was observed that its diet was based on invertebrates, mainly decapoda non-brachyura and polychaeta. in a smaller proportion there were plants, copepoda, gammaridea and mollusca. the level of contribution of each food item changed according to the season and the individual size. such plasticity in feeding behaviour was similar to that described to some fish populations from other estuaries, and could be an indicator of the high level of instability presented by this kind of ecosystem.
Flora do Pico do Jabre, Paraíba, Brasil: Cactaceae juss
Rocha, Emerson Antonio;Agra, Maria de Fátima;
Acta Botanica Brasilica , 2002, DOI: 10.1590/S0102-33062002000100004
Abstract: this work constitutes a systematic treatment of the cactaceae family found in the "pico do jabre", paraíba, brazil. the study-area is the highest peak in the northern part of northeastern brazil and consists of an isolated portion of humid forest, one of the few in the state of paraíba, included in the the domain of the atlantic forest. in the "pico do jabre" the cactaceae family is represented by three genera and four species: cereus jamacaru dc., melocactus ernestii vaupel, pilosocereus chrysostele (vaupel) byles & rowley and pilosocereus gounellei (f.a.c.weber)byles & rowley.
Flora do Pico do Jabre, Paraíba, Brasil: Cactaceae juss
Rocha Emerson Antonio,Agra Maria de Fátima
Acta Botanica Brasilica , 2002,
Abstract: Neste trabalho realizou-se o tratamento sistemático das Cactaceae do Pico do Jabre, Paraíba, Brasil. A área de estudo é o ponto mais alto do Nordeste setentrional, constitui-se de um enclave de mata serrana, sendo considerada um dos poucos representantes da Paraíba incluídos no domínio da Mata Atlantica. No Pico do Jabre, as Cactaceae est o representadas por três gêneros e quatro espécies: Cereus jamacaru DC., Melocactus ernestii Vaupel, Pilosocereus chrysostele (Vaupel)Byles & Rowley e Pilosocereus gounellei (F.A.C.Weber)Byles & Rowley.
Thalassiosirales (Diatomeae) da baía de Guaratuba, Estado do Paraná, Brasil
Lehmkuhl, Elton Augusto;Tremarin, Priscila Izabel;Moreira-Filho, Hermes;Ludwig, Thelma Alvim Veiga;
Biota Neotropica , 2010, DOI: 10.1590/S1676-06032010000200033
Abstract: a survey of the thalassiosirales from three different regions of guaratuba bay resulted in the identification of 28 infrageneric taxa. the samples were collected every three months from april 2007 to january 2008. the taxa were described and illustrated by optical. some of them were illustrated by scanning electron micrographs. taxonomic comments were added when relevant. thalassiosira cedarkeyensis was first recorded to brazil and two thalassiosira ferelineata and t. minuscula were new citations to parana state. comparing the occurrence of thalassiosirales representatives from 1961's previous work 23 species were added to the flora. based on literature informations, only four species were considered from freshwater habitat, discostella stelligera, cyclotella meneghiniana, cyclostephanos invisitatus and thalassiosira rudis, the others were marine or estuarine.
Composi??o ictiofaunística da área de manguezal da Baía de Guaratuba, Paraná, Brasil
Chaves, Paulo de Tarso da Cunha;Corrêa, Marco Fábio Maia;
Revista Brasileira de Zoologia , 1998, DOI: 10.1590/S0101-81751998000100017
Abstract: the guaratuba bay (25o52's, 48o39'w) is the second largest estuarine system of the state of parana, brazil. it extended inside of the continent for about 15 km and is surrounded by mangroves. water depth can reach up to six meters. the fish faunal composition of this area was evaluated with a bottom trawl and, occasionally, casting and gill nets. one species of chondrichthyes and 59 of the actinopterygii (50 genera and 28 families) were reported from the bay. the results were not significantly different from those of the paranagua bay, except by the lower number of species. these differences appear related to distinct collection efforts and the extension of surveyed areas. no species can be considered endemic to the region. tipically freshwater species were not collected.
Molluskan fauna in two shell mounds in the State of Parana coast, Brazil
Marcos de Vasconcellos Gernet,Carlos Jo?o Birckolz
Biotemas , 2011,
Abstract: The shell mounds are artificial formations consisting mostly of mollusk shells used in the feeding of the prehistoric peoples which inhabited our coast. These sites are found throughout the Brazilian coast, and hundreds of them were cataloged in the State of Paraná since the 1940s. The fragility of these sites, their importance as evidences of our prehistoric period, and its abrupt disappearance, justify the need for new researches which contribute to contextualize and draw up plans to preserve this heritage. The works related to the molluskan fauna found in the shell mounds are restricted to refer to the most common species and, sometimes, just their popular names. A greater knowledge on these prehistoric inhabitants’ diet allows a better understanding of ancient natural ecosystems. The survey of mollusks was carried out in the shell mounds Guaragua u and Bogua u, in the towns of Pontal do Parana and Guaratuba, respectively, and performed through visual inspection, reading of specialized bibliography and comparison to previous works on the fauna of the shell mounds in the State of Parana coast. Altogether, 29 species were observed in the shell mound Guaragua u and 17 species were observed in the shell mound Bogua u, resulting in a total of 31 species.
Distribui??o e abundancia dos caranguejos Uca Leach (Crustacea, Decapoda, Ocypodidae) na Baía de Guaratuba, Paraná, Brasil
Masunari, Setuko;
Revista Brasileira de Zoologia , 2006, DOI: 10.1590/S0101-81752006000400001
Abstract: a study of the spatial distribution and abundance of fiddler crabs was carried out in guaratuba bay, parana state, southern brazil. fiddler crabs were collected from 10 biotopes located along a salinity gradient from zero to 32 inside guaratuba bay (between 48°30'w-25°50's and 48°45'w-25°54's). seven species were found, among which, uca mordax (smith, 1870) occurred only in biotopes inundated by low salinity water, from zero to 16. remaining species tolerated wide range of salinity oscillation, but uca maracoani (latreille, 1802-1803) and uca leptodactyla rathbun, 1898 predominated in saltier waters, from 14 to 32, while u. burgersi holthuis, 1967, uca rapax (smith, 1870), uca thayeri rathbun, 1900, and uca uruguayensis nobili, 1901 were collected in more than three biotopes and showed to be euryhaline: they tolerated salinities from 4 to 32. however, other soil characteristics such as pebble/sand/silt/clay balance, organic matter content and presence of seagrass also influenced the spatial distribution of these crabs. u. leptodactyla occurred with maximum density of 240 ind.m-2, a highest recorded value.
Genetics, evolution and conservation of Bromeliaceae
Zanella, Camila M.;Janke, Aline;Palma-Silva, Clarisse;Kaltchuk-Santos, Eliane;Pinheiro, Felipe G.;Paggi, Gecele M.;Soares, Luis E.S.;Goetze, Márcia;Büttow, Miriam V.;Bered, Fernanda;
Genetics and Molecular Biology , 2012, DOI: 10.1590/S1415-47572012000600017
Abstract: bromeliaceae is a morphologically distinctive and ecologically diverse family originating in the new world. three centers of diversity, 58 genera, and about 3,140 bromeliad species are currently recognized. we compiled all of the studies related to the reproductive biology, genetic diversity, and population structure of the bromeliaceae, and discuss the evolution and conservation of this family. bromeliads are preferentially pollinated by vertebrates and show marked variation in breeding systems, from predominant inbreeding to predominant outcrossing, as well as constancy in chromosome number (2n = 2x = 50). autogamous or mixed mating system bromeliads have a high inbreeding coefficient (fis), while outcrossing species show low fis. the degree of differentiation among populations (fst) of species ranges from 0.043 to 0.961, which can be influenced by pollen and seed dispersal effects, clonal growth, gene flow rates, and connectivity among populations. the evolutionary history of the bromeliaceae is poorly known, although some studies have indicated that the family arose in the guayana shield roughly 100 mya. we believe that genetic, cytogenetic, and reproductive data will be essential for diagnosing species status and for assisting conservation programs.
Chromosome numbers in Bromeliaceae
Cotias-de-Oliveira, Ana Lúcia Pires;Assis, José Geraldo Aquino de;Bellintani, Moema Cortizo;Andrade, Jorge Clarêncio Souza;Guedes, Maria Lenise Silva;
Genetics and Molecular Biology , 2000, DOI: 10.1590/S1415-47572000000100032
Abstract: the present study reports chromosome numbers of 17 species of bromeliaceae, belonging to the genera encholirium, bromelia, orthophytum, hohenbergia, billbergia, neoglaziovia, aechmea, cryptanthus and ananas. most species present 2n = 50, however, bromelia laciniosa, orthophytum burle-marxii and o. maracasense are polyploids with 2n = 150, 2n = 100 and 2n = 150, respectively, while for cryptanthus bahianus, 2n = 34 + 1-4b. b chromosomes were observed in bromelia plumieri and hohenbergia aff. utriculosa. the chromosome number of all species was determined for the first time, except for billbergia chlorosticta and cryptanthus bahianus. our data supports the hypothesis of a basic number of x = 25 for the bromeliaceae family and decreasing aneuploidy in the genus cryptanthus.
Chromosome numbers in Bromeliaceae  [cached]
Cotias-de-Oliveira Ana Lúcia Pires,Assis José Geraldo Aquino de,Bellintani Moema Cortizo,Andrade Jorge Clarêncio Souza
Genetics and Molecular Biology , 2000,
Abstract: The present study reports chromosome numbers of 17 species of Bromeliaceae, belonging to the genera Encholirium, Bromelia, Orthophytum, Hohenbergia, Billbergia, Neoglaziovia, Aechmea, Cryptanthus and Ananas. Most species present 2n = 50, however, Bromelia laciniosa, Orthophytum burle-marxii and O. maracasense are polyploids with 2n = 150, 2n = 100 and 2n = 150, respectively, while for Cryptanthus bahianus, 2n = 34 + 1-4B. B chromosomes were observed in Bromelia plumieri and Hohenbergia aff. utriculosa. The chromosome number of all species was determined for the first time, except for Billbergia chlorosticta and Cryptanthus bahianus. Our data supports the hypothesis of a basic number of x = 25 for the Bromeliaceae family and decreasing aneuploidy in the genus Cryptanthus.
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