scholarly journals Consumption of the bark of Albizia niopoides (Mimosaceae) by Sapajus cay Illiger, 1815 (Cebidae: Primates) in the Atlantic Forest fragment of Rancho Laguna Blanca in Eastern Paraguay

2017 ◽  
Vol 4 (1) ◽  
pp. 7-9
Author(s):  
Rebeca L. Smith ◽  
Carter J. Payne
Keyword(s):  
Atlantic Forest ◽  
Forest Fragment ◽  
Self Medication ◽  
Fur Rubbing

The majority of reports of self-medication in capuchins focus on fur-rubbing behaviours (Fragaszy et al., 2004; Paukner & Suomi, 2012; Meuner et al., 2008). Here, we report on observations of Hooded Capuchins in Rancho Laguna Blanca (RLB), feeding on the bark of the tree Albizia niopoides (Mimosaceae), a possible case of self-medication.

scholarly journals Fur-rubbing with Piper leaves in the San Martín titi monkey, Callicebus oenanthe

2017 ◽  
Vol 4 (1) ◽  
pp. 127-130 ◽  
Author(s):  
Rosario Huashuayo-Llamocca ◽  
Eckhard W. Heymann
Keyword(s):  
Rainy Season ◽  
Group Living ◽  
Forest Fragment ◽  
Self Medication ◽  
Titi Monkey ◽  
Fur Rubbing ◽  
Piper Aduncum ◽  
San Martín

Abstract. We report observations on fur-rubbing with leaves from Piper aduncum by a San Martín titi monkey, Callicebus oenanthe. Fur-rubbing occurred during the transition from the dry to the rainy season in a titi monkey group living in a forest fragment in the Moyobamba region of Peru. Since Piper leaves include very potent compounds that may affect ectoparasites, we tentatively interpret the observed fur-rubbing as self-medication.

scholarly journals An observation of an unusual human-directed threat display by Sapajus cay Illiger, 1815 (Cebidae: Primates) in a fragment of Upper Paraná Atlantic Forest, eastern Paraguay

2017 ◽  
Vol 4 (1) ◽  
pp. 5-6
Author(s):  
Rebecca L. Smith
Keyword(s):  
Atlantic Forest ◽  
Adult Male ◽  
Forest Fragment ◽  
Fur Rubbing ◽  
Hooded Capuchin ◽  
Upper Paraná Atlantic Forest

Here I report on an observation of an unusual threat display involving fur-rubbing with Citrus sp. leaves by an adult male hooded capuchin (Sapajus cay) in the Upper Paraná Atlantic Forest fragment of Rancho Laguna Blanca in eastern Paraguay.

scholarly journals Small mammal glucocorticoid concentrations vary with forest fragment size, trap type, and mammal taxa in the Interior Atlantic Forest

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sarah A. Boyle ◽  
Noé U. de la Sancha ◽  
Pastor Pérez ◽  
David Kabelik
Keyword(s):  
Atlantic Forest ◽  
Small Mammals ◽  
Acute Stress ◽  
Physiological Stress ◽  
Fragment Size ◽  
Hair Shaft ◽  
Forest Fragments ◽  
Forest Fragment ◽  
Trapping Methods ◽  
Free Ranging

AbstractSpecies that live in degraded habitats often show signs of physiological stress. Glucocorticoid hormones (e.g., corticosterone and cortisol) are often assessed as a proxy of the extent of physiological stress an animal has experienced. Our goal was to quantify glucocorticoids in free-ranging small mammals in fragments of Interior Atlantic Forest. We extracted glucocorticoids from fur samples of 106 small mammals (rodent genera Akodon and Oligoryzomys, and marsupial genera Gracilinanus and Marmosa) from six forest fragments (2–1200 ha) in the Reserva Natural Tapytá, Caazapá Department, Paraguay. To our knowledge, this is the first publication of corticosterone and cortisol levels for three of the four sampled genera (Akodon, Oligoryzomys, and Marmosa) in this forest system. We discovered three notable results. First, as predicted, glucocorticoid levels were higher in individuals living withing small forest fragments. Second, animals captured live using restraint trapping methods (Sherman traps) had higher glucocorticoid levels than those animals captured using kill traps (Victor traps), suggesting that hair glucocorticoid measures can reflect acute stress levels in addition to long-term glucocorticoid incorporation. These acute levels are likely due to urinary steroids diffusing into the hair shaft. This finding raises a concern about the use of certain trapping techniques in association with fur hormone analysis. Finally, as expected, we also detected genus-specific differences in glucocorticoid levels, as well as cortisol/corticosterone ratios.

scholarly journals Feather mites (Acari, Astigmata) associated with birds in an Atlantic Forest fragment in Northeastern Brazil

2015 ◽  
Vol 75 (3) ◽  
pp. 726-735 ◽  
Author(s):  
HM Silva ◽  
FA Hernandes ◽  
M Pichorim
Keyword(s):  
Atlantic Forest ◽  
Bird Species ◽  
Rio Grande ◽  
Neotropical Region ◽  
Species Level ◽  
Northeastern Brazil ◽  
Forest Fragment ◽  
Visual Examination ◽  
Feather Mites ◽  
First Time

AbstractThe present study reports associations between feather mites (Astigmata) and birds in an Atlantic Forest fragment in Rio Grande do Norte state, in Brazil. In the laboratory, mites were collected through visual examination of freshly killed birds. Overall, 172 individuals from 38 bird species were examined, between October 2011 and July 2012. The prevalence of feather mites was 80.8%, corresponding to 139 infested individuals distributed into 30 species and 15 families of hosts. Fifteen feather mite taxa could be identified to the species level, sixteen to the genus level and three to the subfamily level, distributed into the families Analgidae, Proctophyllodidae, Psoroptoididae, Pteronyssidae, Xolalgidae, Trouessartiidae, Falculiferidae and Gabuciniidae. Hitherto unknown associations between feather mites and birds were recorded for eleven taxa identified to the species level, and nine taxa were recorded for the first time in Brazil. The number of new geographic records, as well as the hitherto unknown mite-host associations, supports the high estimates of diversity for feather mites of Brazil and show the need for research to increase knowledge of plumicole mites in the Neotropical region.

scholarly journals Dynamics and Edge Effect of an Atlantic Forest Fragment in Brazil

2016 ◽  
Vol 23 (3) ◽  
pp. 340-349 ◽  
Author(s):  
Poliana Gabriella Araújo Mendes ◽  
Maria Amanda Menezes Silva ◽  
Tassiane Novacosque Feitosa Guerra ◽  
Ana Carolina Borges Lins-e-Silva ◽  
Airton de Deus Cysneiros Cavalcanti ◽  
...  
Keyword(s):  
Species Richness ◽  
Atlantic Forest ◽  
Edge Effect ◽  
Woody Plants ◽  
Response Times ◽  
Forest Edge ◽  
Northeastern Brazil ◽  
Forest Fragment ◽  
Canopy Tree ◽  
Forest Interior

ABSTRACT The woody plants in an edge area formed approximately 35 years ago in an Atlantic Forest fragment in northeastern Brazil were examined, and three environments defined: edge, intermediate, and interior. Canopy tree densities and basal areas were found to be similar in all three environments, and also similar to previous published studies in the same region; species richness was greatest at the forest edge. The understory showed greater species richness in the forest interior, but greater diversity and equitability in the intermediate environment. Understory environments close to the forest edge demonstrated larger stem diameters than in the forest interior, although at lesser densities and with smaller total basal areas. Our results indicated the existence of distinct patterns in canopy and understory that most likely reflect differences in the response times of these two vegetation layers, with the understory being more sensitive to alterations in environmental structure.

scholarly journals Aquatic oligochaetes associated with bryophytes in an Atlantic Forest stream

2013 ◽  
Vol 13 (4) ◽  
pp. 371-375 ◽  
Author(s):  
Luciana Falci Theza Rodrigues ◽  
Lucas Deziderio Santana ◽  
Roberto da Gama Alves
Keyword(s):  
Water Flow ◽  
Atlantic Forest ◽  
Benthic Macroinvertebrates ◽  
Dry Season ◽  
Forest Fragment ◽  
Order Stream ◽  
First Order ◽  
Aquatic Oligochaetes ◽  
Forest Stream ◽  
Dry And Rainy Seasons

There are few reports in the literature about the colonization of benthic macroinvertebrates on bryophytes. The aim of the present study was to analyzed the oligochaetes established on bryophytes adhered to stones in a first-order stream. The collections were carried out in an Atlantic Forest fragment area during the dry and rainy seasons. We identified 15 taxa from a total of 422 oligochaetes specimens, of which the most abundant were Pristina sp.1, Enchytraeidae and Pristina jenkinae. Unlike other habitats, where the abundance of macroinvertebrates tends to be greater in the dry season, we did not find any significant differences in the abundance, richness, composition and diversity between the two periods. The results of this study indicate that bryophytes are possible areas of refuge for oligochaetes in periods of faster water flow.

scholarly journals Food habits of snakes from the RPPN Feliciano Miguel Abdala, an Atlantic Forest fragment of southeastern Brazil

2009 ◽  
Vol 9 (1) ◽  
pp. 263-269 ◽  
Author(s):  
Cesar Felipe de Souza Palmuti ◽  
José Cassimiro ◽  
Jaime Bertoluci
Keyword(s):  
Cluster Analysis ◽  
Atlantic Forest ◽  
Food Habits ◽  
Stomach Contents ◽  
Southeastern Brazil ◽  
Forest Fragment ◽  
Diet Preferences

We present data on the diet of 15 species of snakes belonging to a community from Reserva Particular do Patrimônio Natural Feliciano Miguel Abdala, an Atlantic Forest fragment of Southeastern Brazil, based on their stomach contents. For 12 items we were able to determine the direction of the ingestion. Most snakes ingested the prey head-first. A cluster analysis was conducted with items grouped as chilopods, mollusks, adult anurans, anuran tadpoles, lizards, amphisbaenians, snakes, and rodents. The phylogenetic influence on diet preferences is discussed.

scholarly journals Effect of litter on the surface runoff of a forest fragment in the Atlantic Forest

2021 ◽  
Vol 16 (1) ◽  
pp. 1-7
Author(s):  
A.G. Spletozer ◽  
L.J. Silveira ◽  
R.A. Barbosa ◽  
S.G. Barbosa ◽  
H.C.T. Dias
Keyword(s):  
Atlantic Forest ◽  
Surface Runoff ◽  
Forest Fragment

Spider assemblage structure and functional diversity patterns in clear-cut, logged, and undisturbed areas in a large Atlantic Forest remnant

2020 ◽  
Vol 50 (7) ◽  
pp. 608-614
Author(s):  
Ronei Baldissera ◽  
Suiane Oliveira de Quadros ◽  
Gabriela Galeti ◽  
Everton Nei Lopes Rodrigues ◽  
Luan M.V. Lazzarotto ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Species Conservation ◽  
Basal Area ◽  
Selective Logging ◽  
Canopy Openness ◽  
Forest Fragment ◽  
Clear Cut ◽  
Clear Cutting ◽  
Functional Richness ◽  
Forest Remnant

Habitat loss is one of the main consequences of landscape transformation by humans. Monitoring biodiversity changes in areas under different management strategies is fundamental for species conservation. Our study is the first to assess the role of forest disturbance history on spider (Araneae) biodiversity in the westernmost portion of the Atlantic Forest. We analyzed taxonomic and functional aspects of spider assemblages in understories in a large forest fragment in southwestern Brazil. Spiders were sampled in five 30 m × 5 m plots over three seasons in three areas with different management histories: clear-cutting, selective logging, or native plots. We also characterized tree basal area, tree density, and canopy openness. The clear-cut plots showed more canopy openness and low habitat heterogeneity due to the high density of one pioneer native tree species. Forest structure in selective logging and native plots was similar. Spider richness, abundance, and functional richness were affected only by the season. Species composition also differed among the areas depending on the season. The abundance of web-building species was mainly associated with clear-cut areas in winter and spring. These results highlight the importance of natural regeneration in the Atlantic Forest after disturbance for the conservation of regional spider biodiversity.

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