|
|
|
| Registros recuperados: 17 | |
|
|
| Portes,Carlos Eduardo; Aleixo,Alexandre. |
| The taxonomy of the genus Campylorhamphus Bertoni, 1901 is still uncertain, with many inconsistent evolutionary patterns implied by current taxonomy. A re-analysis of the type-series of Campylorhamphus procurvoides successor Todd, 1948 revealed that the holotype is indistinguishable from Campylorhamphus trochilirostris notabilis Zimmer, 1934, while the paratypes belonged either to the latter taxon or to a second already named taxon (Campylorhamphus trochilirostris snethlageae Zimmer, 1934), and a third and yet undescribed taxon allied to Campylorhamphus procurvoides. Here, we present statistical analyses of morphological data supporting the synonymization of C. p. successor into C. t. notabilis, the name with priority. Our findings resolve the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Distribution; Habitat selection; Synonymization; Terra-firme forest; Taxonomy; Várzea forest. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000300019 |
| |
|
|
| McIntyre,Nancy E.; Nisbett,Richard A.; Abuzeineh,Alisa; Holsomback,Tyla; Chu,Yong-Kyu; Carmichael,Joseph A.; de la Sancha,Noé; Dick,Carl W.; Jonsson,Colleen B.; Owen,Robert D.. |
| Home range size and habitat use of seropositive Oryzomys palustris, primary host for the Bayou strain of hantavirus, were compared to that of seronegative individuals from March 2002 - August 2003 in a longitudinal field population study. There were significant macrohabitat associations with serological status, but selection for most microhabitat variables did not differ between seropositive and seronegative animals. Seropositive adult males moved farther (had larger home ranges) than did seronegatives and were larger in terms of mass and testes size. These patterns may reflect the influence of infection on rodent ecology in terms of dominance and access to preferred habitats. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: BAYV; Habitat selection; Hantavirus; Home range size; Texas. |
| Ano: 2009 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832009000100008 |
| |
|
| |
|
|
| FURLAN,MICHELE; CASTILHO,ANTONIO L.; FERNANDES-GÓES,LISSANDRA C.; FRANSOZO,VIVIAN; BERTINI,GIOVANA; COSTA,ROGéRIO C. DA. |
| This study investigated the importance of variations in environmental factors affecting the abundance patterns of decapods on the southeastern Brazilian coast. Sampling was carried out monthly from January 1998 through December 1999 in Ubatumirim and Mar Virado, Ubatuba region, using a commercial shrimp fishing boat equipped with double-rig nets. Six areas adjacent to rocky shores were chosen. Bottom-water samples were collected using a Nansen bottle, to measure the temperature and salinity. Sediment samples were also obtained by means of a Van Veen grab, for determination of texture and organic-matter content. The association of environmental factors with species abundance was evaluated by Canonical Correspondence Analysis (α = 0.05). Forty-one species of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Benthic species; Decapod crustaceans; Environmental factors; Habitat selection. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401345 |
| |
|
| |
|
|
| Alvarez Alemán, A. |
| Se estudió la población del manatí antillano (Trichechus manatus) presente en la Ensenada de la Siguanea. Se colectó información acerca de los avistamientos de la especie, tamaño de los grupos, conductas, composición de la dieta y amenazas potenciales. Además se realizó la caracterización de sushábitats principales. Se utilizaron diversas metodologías que incluyeron muestreos en botes, a partir de recorridos y desde estaciones fijas, colecta e identificación de especies vegetales, colecta y análisis de material fecal y entrevistas a pescadores. Se determinó que la zona de estudio presenta un conjunto de características adecuadas para la supervivencia de la especie, como disponibilidad de alimento, temperatura del agua apropiada, fuentes de agua dulce,... |
| Tipo: Theses and Dissertations |
Palavras-chave: Habitat selection; Conservation; Aquaculture. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/5697 |
| |
|
|
| Brotto,Daniel Shimada; Araujo,Francisco Gerson. |
| The use of artificial structures as a shelter for fishes was evaluated aiming to assess increase in fish abundance in Ilha Grande Bay at Southeast Brazilian coast (Lat: 22°8'-23°5' S; Long. 44º05-44º40W). Five different types of structures, made of clay tiles, with an increase range on size and complexity were tested to assess their efficiency. Fish were counted in each type of structure from May-1996 to April-1997 by underwater observation made with snorkelling. According to the pattern of concentration in the structures, two groups of fishes were identified. One comprised by E. guaza, M. rubra, R. randalli, S. hispidus, Sphoeroides sp and Haemulun sp showed affinity for hard bottom, irregular profile and an increase in abundance on the more complex and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artificial Reefs; Brazil; Fish; Habitat selection. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000300015 |
| |
|
|
| Yahnke,Christopher J.. |
| I conducted a small mammal trapping study in the central Paraguayan Chaco region of South America to investigate habitat selection by small mammals at different spatial scales. Small mammals were collected in forest, successional thorn scrub, pasture, and crop fields representing both relatively undisturbed habitats and agroecosystems. A total of 1089 small mammals representing 13 species were captured during 23 296 trap nights. Pastures had the highest species richness as well as the highest number of captures. Some small mammal species such as Calomys laucha and Akodon toba were captured in a variety of habitats whereas others like Holochilus chacarius and Bolomys lasiurus were captured almost exclusively in pastures. Principal components analysis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chaco; Habitat selection; Natural history; Paraguay; Small mammals. |
| Ano: 2006 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832006000100008 |
| |
|
|
| Barbini, S.. |
| The diet composition and feeding habits of Zapteryx brevirostris were studied through stomach contents analysis. 158 specimens were collected from 7 research cruises carried out by Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP, Argentina)between 2001 to 2004, in the Buenos Aires Province (Argentina) and Uruguay coasts (34°-41° S), until 50 m depth. Of the total stomach analysis, 81percentage contained food. According to the alimentary index expressed as a percentage (IA percentage ), indicated that polychaetes, decapods and lancelets were more consumed prey, representing 44.37percentage , 19.94 percentage and 17.36 percentage of the diet, respectively. The amphipods (8.74 percentage ), cumaceans (4.11percentage ) and isopods (3.29... |
| Tipo: Theses and Dissertations |
Palavras-chave: Feeding behaviour; Food consumption; Habitat selection; Stomach content; Feeding behaviour; Food consumption; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_3016. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/3133 |
| |
|
|
| Mercader, Manon; Blazy, Christophe; Di Pane, Julien; Devissi, Camille; Mercière, Alexandre; Cheminée, Adrien; Thiriet, Pierre; Pastor, Jérémy; Crec'Hriou, Romain; Verdoit-‐jarraya, Marion; Lenfant, Philippe. |
| Man‐made infrastructures have become ubiquitous components of coastal landscapes, leading to habitat modification that affects the abundance and diversity of marine organisms. Marine coastal fish have a complex life cycle requiring different essential habitats. One of these habitats is known as a nursery, a place where juveniles can settle in large numbers, survive, and grow to contribute to the adult population. Nurseries are mainly found in shallow, sheltered zones and are thus particularly impacted by urbanization, notably by harbors. The vertical featureless structure of docks is very unlikely to be used by juveniles, which need complex habitats to find food and shelter from predators. Recent attempts to rehabilitate the nursery function in such... |
| Tipo: Text |
Palavras-chave: Artificial habitat; Habitat selection; Marine restoration; Nursery; Seascape homogenization; Survival rate. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00488/59952/63446.pdf |
| |
|
|
| CASTILHO,ANTONIO L.; GRABOWSKI,RAPHAEL C.; SIMÕES,SABRINA M.; SANTOS,ANA PAULA F.; COSTA,ROGÉRIO C.; FRANSOZO,ADILSON. |
| ABSTRACT The present study investigated the growth, longevity and reproductive dynamics ofArtemesia longinaris in the southeastern coast of Brazil over a two-year period. Monthly collections were conducted in Ubatuba and Caraguatatuba using a shrimp fishing boat equipped with "double-rig" nets. Each region was divided into 7 sampling stations up to 35 m deep. Size frequency distributions, growth, longevity, sex ratio, and abundance of individuals in each demographic class, were compared. The relationship between abiotic factors and abundance of each demographic class was assessed using a Canonical Correlation Analysis. A total of 64,641 individuals were collected (6,928 measured) with an estimated longevity of 1.30 (Ubatuba) and 1.14 (Caraguatatuba) years... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Habitat selection; Latitudinal variation; Longevity; Penaeoidea; Reproductive dynamics. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000502123 |
| |
|
|
| Theriault, I; Pernet, Fabrice. |
| This study examines the effects of varying dietary lipids on growth, survival, lipid composition and behaviour in lobster Homarus americanus (Milne Edwards, 1837) postlarvae. Lobsters were fed one of 3 diets during their early ontogeny: (1) Artemac, a widely used Artemia replacement; (2) a ternary mixture consisting of Artemac, frozen Artemia adults and Artemia flakes; or (3) a mixture of live A. salina nauplii and adults. We evaluated the olfactory capacity (response to predator odour plume) and cryptic behaviour (ability to hide during settlement) of lobster postlarvae as a function of these diets and the lipid and the fatty acid composition of lobsters. Growth and survival of lobster postlarvae were highest in those fed live Artemia, followed by the... |
| Tipo: Text |
Palavras-chave: Settlement behaviour; Nutrition; Lipid; Habitat selection; Fatty acid; Crustacean larvae. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-4651.pdf |
| |
|
|
| MELO,GERUZA L.; MIOTTO,BARBARA; PERES,BRISA; CACERES,NILTON C.. |
| Each animal species selects specific microhabitats for protection, foraging, or micro-climate. To understand the distribution patterns of small mammals on the ground and in the understorey, we investigated the use of microhabitats by small mammals in a deciduous forest of southern Brazil. Ten trap stations with seven capture points were used to sample the following microhabitats: liana, fallen log, ground litter, terrestrial ferns, simple-trunk tree, forked tree, and Piper sp. shrubs. Seven field phases were conducted, each for eight consecutive days, from September 2006 through January 2008. Four species of rodents (Akodon montensis, Sooretamys angouya, Oligoryzomys nigripes and Mus musculus) and two species of marsupials (Didelphis albiventris and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cricetid rodents; Didelphid marsupials; Habitat selection; Predator-prey relationship; Vertical space use. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200727 |
| |
|
|
| Comiskey, E. Jane; University of Tennessee; ecomiske@tiem.utk.edu; Bass, Jr., Oron L; Everglades National Park; Sonny_Bass@nps.gov; Gross, Louis J; University of Tennessee; gross@tiem.utk.edu; McBride, Roy T; Livestock Protection Company;; Salinas, Rene; University of Tennessee; salinas@tiem.utk.edu. |
| The endangered Florida panther (Puma concolor coryi) survives in an area of pronounced habitat diversity in southern Florida, occupying extensive home ranges that encompass a mosaic of habitats. Twenty-one years of daytime monitoring via radiotelemetry have provided substantial but incomplete information about panther ecology, mainly because this method fails to capture movement and habitat use between dusk and dawn, when panthers are most active. Broad characterizations of panther habitat suitability have nonetheless been derived from telemetry-based habitat selection studies, focusing narrowly on forests where daytime resting sites are often located. The resulting forest-centered view of panthers attributed their restricted distribution and absence of... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Felis concolor coryi; Florida panther; Puma concolor coryi; Forested habitat; Endangered species; Fractal analysis; Habitat selection; Home range; Landscape conservation; Telemetry. |
| Ano: 2002 |
|
| |
|
|
| APOLINÁRIO,M.; COUTINHO,R.; BAETA-NEVES,M. H.. |
| The present study examines habitat selection and grazing pressure of the periwinkle Nodilittorina lineolata (Gmelin, 1791) on the rocky shore of Arraial do Cabo, RJ, Brazil (lat. 23°S, long. 43°W). Transfer experiments suggest that periwinkles actively select the mid intertidal, where the cirripede Chthamalus bisinuatus Pilsbry is the dominant sessile invertebrate. We also conducted a caging experiment in the middle intertidal, manipulating grazers and light, to assess the impact of grazing upon microalgal density. Grazing pressure significantly reduced microalgal abundance at the mid-intertidal level, suggesting that food availability plays an important role in the habitat selection of periwinkles on the studied shore. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Habitat selection; Intertidal; Littorinidae; Microalgae. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000200005 |
| |
|
| |
|
| |
| Registros recuperados: 17 | |
|
|
|
