Abstract:
:The Mato Grosso is a typical Atlantic Forest stream located on the East coast of Brazil, approximately 70 km from Rio de Janeiro city. From its source at about 800m a.s.l, the stream drains a 30km2 area of the Northwestern part of the municipality of Saquarema, state of Rio de Janeiro and flows into the Saquarema Lagoon system. We hypothesized that fish species occupy distinct mesohabitats, with the prediction that their occurrences and densities differ among the microhabitats of riffles, runs and pools. A 250m-long stretch of the stream located in its uppermost part was selected for this study, where it becomes second-order. Mesohabitat description and their fish characterization were undertaken. Fish sampling was conducted by electroshocking and after their identification and counting, they were returned to the stream. For mesohabitat characterization, a Discriminant Function Analysis (DA) was applied. The total number of samples was estimated by the Zippin method and the recorded densities were used as an Indicator Species Analysis (ISA), followed by a Monte Carlo test for 1 000 permutations. The DA significantly separated the three predetermined mesohabitats (pool, riffle and run) (WL = 0.13, F = 187.70, p = 0.001). We found five species of fishes, belonging to four families and three orders. The fishes Rhamdia quelen, Phalloceros harpagos, Pimelodella lateristriga and Astyanax taeniatus are indicators of the pool environment in the Mato Grosso stream, whereas Characidium cf. vidali is an indicator of the riffle environment. The Monte Carlo test detected non-random mesohabitat use only for P. lateristriga and A. taeniatus in the pools and for Characidium cf. vidali in the riffles. We concluded that the Mato Grosso stream contains three well-defined mesohabitats, with indicator species present in two of these mesohabitats.
journal_name
Rev Biol Tropjournal_title
Revista de biologia tropicalauthors
Rezende CF,Moraes M,Manna LR,Leitão RP,Caramaschi EP,Mazzoni Rdoi
10.15517/rbt.v58i4.5425subject
Has Abstractpub_date
2010-12-01 00:00:00pages
1479-87issue
4eissn
0034-7744issn
2215-2075journal_volume
58pub_type
杂志文章abstract::The genus Helcogrammoides comprises three species of small, cryptic shorefishes, H. antarcticus, H. chilensis, and H. cunninghami. All three species inhabit shallow water along exposed rocky coasts. Specimens reported herein extend the known distributions of H. chilensis and H. cunninghami to the vicinity of Lima, Per...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2001-07-01 00:00:00
abstract::Onychophora have undergone a new wave of taxonomic revisions in the last three years. After a recent revision, only two species of Macroperipatus are registered from Brazil: Macroperipatus ohausi and Macroperipatus geayi. The former was only the second species of Onychophora to be described from Brazil, and is herein ...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2014-09-01 00:00:00
abstract::Female resistance behavior that occurs prior to intromission does not by itself imply forced copulation. Such behavior may function instead as a test of the male in order to favor some males over others, or to induce the male to desist. Thus, male persistence and forcefullness may sometimes be better described as pers...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2002-06-01 00:00:00
abstract::In Costa Rica, cervical cancer is the second most common female cancer, despite accessibility of screening through the universal health care system. There is little understanding of knowledge levels of the adolescent population on cervical cancer, although this population is the most exposed to risk factors. This stud...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v62i3.14063
更新日期:2014-09-01 00:00:00
abstract::Dormirator maculatus (n=184) was collected in the Alvarado Lagoon, Mexico during a year period (Oct. 1993-1994). In the helminthologic review, the presence of Clinostomum complanatum (82.3%), Neoechinorhynchus golvani (76.1%), Spiroxys sp. (21.3 %), and Camallanus sp. (6.2%) was registered. Reduction of the hematocrit...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2004-06-01 00:00:00
abstract::A new species of Hyalinobatrachium of the fleischmanni group, H. mondolfii, is described from the Orinoco delta floodplains in Venezuela. This new species can be distinguished from other congeners by the following combination of characters: parietal peritoneum clear, pericardium white, visceral and hepatic peritoneum ...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2001-09-01 00:00:00
abstract::Estimating feline abundance becomes particularly difficult, sometimes impossible, due to their elusive behavior and extensive space requirements. Available techniques are expensive and/or poorly efficient, therefore alternative methods are needed. The objective of this study was to assess the possibility of identifyin...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2008-12-01 00:00:00
abstract::The Neotropical region exhibits the largest diversity of fish worldwide; however, little is known about the early development of fish species from this region. Therefore, to contribute to this knowledge, this study aimed to morphologically describe the early stages of development (eggs, larvae and juveniles) of S. pap...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v63i1.14121
更新日期:2015-03-01 00:00:00
abstract::The analysis of integumental pore pattern has identified two intraspecific groups of postlarval shrimp Litopenaeus vannamei (Boone, 1931), a species of which three to five natural populations or groups are expected to be found from Mexico to Peru. Natural distribution and man-made redistributions have not been typifie...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v54i3.12555
更新日期:2006-09-01 00:00:00
abstract::The Chiquito River subwatershed supplies 30% of the potable water consumed by the city of Morelia, Michoacan. Mexico. It is necessary to constantly monitor its waters using metrics that evaluate environmental degradation and aquatic assemblages. In the present study, we used the Index of Biotic Integrity for Aquatic M...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2014-04-01 00:00:00
abstract::Marine bivalves are a very important food source for human consumption, and species that has not been of traditional use as a fishery resource are gaining interest. Seasonal variation in proximate composition, condition index and energy or caloric content of the mussel Tagelus peruvianus were studied in the Gulf of Ni...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2011-12-01 00:00:00
abstract::Centrostephanus coronatus reaches a density of 0.06 individuals/m2 in shallow reef waters in Parque Nacional Marino Ballena, Pacific of Costa Rica, in the same habitat occupied by the urchin Diadema mexicanum. It is the fourth species of diadematoid urchins reported for Costa Rican and a first new report for Central A...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2004-12-01 00:00:00
abstract::Breast cancer is first in incidence and mortality among Costa Rican women. In 2011 there is a projected 1 071 new cases. We selected 116 patients diagnosed with breast cancer and family history of breast cancer. A detailed family history and epidemiology data was obtained from each patient and a blood sample was proce...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2012-12-01 00:00:00
abstract::Thirteen representatives of Myxariaceae sensu Jülich: Heterochaetella brachyspora (Bourdot & Galzin) Luck-Allen, Myxarium atratum (Peck) Ginns & Lefebvre, M. granulum Hauersl., M. laccatum (Bourdot & Galzin) Reid, M. mesomorphum (Bourdot & Galzin) Haursl., M. mesonucleatum Kisim., Oberw. & L.D. Gómez nov. sp., M. subs...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2000-06-01 00:00:00
abstract::Fishing activity in two artificial reefs (ARs) was monitored between August 2001 and August 2002 in the gulf of Morrosquillo, to investigate their possible impact on the fishery dynamics. We determined catch per unit effort (CPUE) and catch composition, and found 19 species in Punta de Piedra and 36 in Tolú (16 specie...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2009-12-01 00:00:00
abstract::Limnocytherina is a genus conformed by 12 species; its distribution in the American continent is known to be exclusively on the North (neartics), but little is reported about its distribution from Mexico (transition zone) and Central America (Neotropics). Different sampling campaigns were undertaken in three crater la...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2014-03-01 00:00:00
abstract::Age and growth of Nile tilapia (Oreochromis niloticus) were determined using 1039 specimens collected in a tropical shallow lake of Mexico, from January to December 1993. Standard length of females ranged from 9.0 to 16.5 cm and males from 8.9 to 14.8 cm. The standard length-weight relationships for all individuals wa...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v56i2.5630
更新日期:2008-06-01 00:00:00
abstract::Habitat modifications such as deforestation and the increase of agricultural activities, have led to uncommon faunal interactions. In Colombia, this condition have caused the secondary contact of subspecies of Ramphocelus flammigerus populations from Cauca valley and the Pacific coast; and some specimens with rumps of...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2012-03-01 00:00:00
abstract::The structure of the community of moss springtails on oak and fir bark in the forests at the NW slope of Iztaccihuatl Volcano, State of Mexico, is analyzed. The study included four samplings (November 2003, March-June-August 2004), carried out in three altitudes I: 2750 m, II: 2 930 and 3 250 m a.s.l. Calculated index...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2008-06-01 00:00:00
abstract::The basic ecology of seagrass beds was investigated by comparing biomass, productivity and density of Thalassia testudinum (turtle grass) at three sites: Puerto Vargas, Punta Cahuita and Rio Perezoso, in Cahuita National Park, Limón, Costa Rica, over a two month period (March-April 1999). Above ground biomass, density...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2001-12-01 00:00:00
abstract::Punta Lara Natural Reserve shelters the relict of the Southernmost riparian forest in the world, where the flora is threatened by the anthropic expansion and by the introduction of exotic species. In this area the ferns and lycophytes grow in particular environments as marshland, grassland and marginal forest. The aim...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2011-09-01 00:00:00
abstract::A systematic list of the echinoderms of the Gulf of California, based on museum specimens of the Colección Nacional de Equinodermos, Instituto de Ciencias del Mar y Limnologia, Universidad Nacional Autónoma de México and the National Museum of Natural History, Smithsonian Institution, Washington, D.C. is presented. A ...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2005-12-01 00:00:00
abstract::We studied the composition and seasonal variation of the diet of the capybara (Hydrochaeris hydrochaeris) in the flooded savannas of Caño Limón, Colombia. This was achieved by direct observation of the consumption patterns of these animals. The capybaras only consumed plants, and their diet included 89 species of 22 f...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2003-06-01 00:00:00
abstract::Age and growth parameters were estimated for bigeye tuna Thunnus obesus Lowe, 1839 sampled from China longline fisheries in the central Atlantic Ocean from October 2002 to July 2003 and from August 2004 to March 2005. The von Bertalanffy growth parameters were estimated at L(infinity)=217.9 cm fork length, k=0.23 year...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v57i1-2.11292
更新日期:2009-03-01 00:00:00
abstract::Fatty acids have been successfully used to trace the transfer of organic matter in coastal and estuarine food webs. To delineate these web connections, fatty acid profiles were analyzed in species of microbes (Azotobacter vinelandii, and Lactobacillus xylosus), prawns (Metapenaeus monoceros and Macrobrachium rosenberg...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v58i2.5230
更新日期:2010-06-01 00:00:00
abstract::Liolaemus belongs to the Eulaemus subgenus, that is included in the Liolaemus montanus group or section, and is distributed in Argentina, Bolivia, Chile and Peru. The species members of this clade inhabit arid and high altitude environments, usually above 2800 m, and have a strong tendency to herbivory and a viviparou...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2013-12-01 00:00:00
abstract::Isolation of a field strain of Babesia bigemina (Piroplasma: Babesiidae) and establishment of in vitro culture for antigen production. Bovine b abesiosis, caused by Babesia bigemina, is a barrier for livestock development; it results in high economic loss to Mexican livestock. Control requires adequate antigens for di...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2007-03-01 00:00:00
abstract::The Snout Otter Clam, Lutraria philippinarum is a regularly harvested bivalve species for food and also as a source of income in the Philippines. For sustainable supply of this resource in the wild, efficient and effective management strategies are needed, and the evaluation of its reproductive biology and fishery are...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v60i4.2182
更新日期:2012-12-01 00:00:00
abstract::Egg clutches of the centrolenid Hyalinobatrachium pulveratum were sampled in four lowland locations of Costa Rica. The ontogenesis of the tadpoles of this species is documented by periodical descriptions of the larval stages. Larvae of H. pulveratum change their shape during development because of the non-equal growth...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v52i1.14912
更新日期:2004-03-01 00:00:00
abstract::The spatial distribution of individuals is a fundamental property of most species and constitutes essential information for the development of restoration and conservation strategies, especially for endangered plant species. In this paper we describe the spatial distribution of different size classes of the endangered...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v61i3.11981
更新日期:2013-09-01 00:00:00