01. Universidade Federal Rural de Pernambuco - UFRPE (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/1
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3 resultados
Resultados da Pesquisa
Item Dinâmica comportamental do atobá-marrom (Sula leucogaster) no Arquipélago de Fernando de Noronha(2024-03-05) Morais, Maria Eduarda Serafim de; Carmo, Rodrigo Felipe Rodrigues do; Santos, Lucas Penna Soares; http://lattes.cnpq.br/2928664459774625; http://lattes.cnpq.br/8603161096449726; http://lattes.cnpq.br/2136042887466270Seabirds are important bioindicators of marine ecosystems. Environmental changes, such as climate alterations and anthropogenic factors, affect the occupation and behavior of several species. The Brown Booby Sula leucogaster (BODDAERT, 1783) is one of the resident species in the Fernando de Noronha archipelago, an oceanic island located in the northeast region of Brazil. This study aimed to evaluate the behavioral dynamics of the Brown Booby in different regions of Fernando de Noronha. Data collection took place between September 23 and October 18, 2023, encompassing three sampling sites on the leeward coast (north-northwest face) and three on the windward coast (south-southeast face) of the main island. Visual samplings were divided between 7 am and 5 pm, conducted through scan and focal animal series, with 11 behaviors categorized into four classes: foraging, resting, interaction, and passage. Parameters of occurrence frequency (FO), point abundance index (IPA), and behavior frequency were analyzed. A total of 806 individuals were counted with an FO of 72.5% and an IPA of 10.1 individuals per sampling, across all study period. The windward coast showed higher abundance (max. 55 individuals) compared to the leeward coast (max. 20 individuals), although the occurrence frequency was similar between both (~73%). The highest numbers of individuals were recorded on Sueste and Caiera beaches (windward coast). A pattern of decline in individual abundance throughout the day was observed, as well as a general decrease in behavior frequency, including the quantity of attempts for deep dives. Resting activity predominated (59.6%), followed by foraging (40.1%), interactions (0.3%), and passage (0.1%), with more events occurring in the windward coast for all categories. Behavioral plasticity in seabirds is advantageous in dynamic regions such as marine environments, where prey availability varies greatly. This study helped understand the behavioral patterns of the local Brown Booby population, which is important for the development of effective visitation management strategies in Fernando de Noronha.Item Dinâmica da ocupação de Dendropsophus decipiens (Lutz, 1925) em bromélias de um fragmento de Mata Atlântica semidecidual(2019-12-13) Santos, Rebeca Vitória Inácio dos; Araújo, Alan Pedro de; Moura, Geraldo Jorge Barbosa de; http://lattes.cnpq.br/1348666346504103; http://lattes.cnpq.br/7843892415680764; http://lattes.cnpq.br/7183058148320345By offer microhabitat, bromeliads are of great importance in the life of amphibians. Anuran bromeliads eventually use bromeliads, and in the rainy season they go to water bodies like temporary puddles and lakes to breed. It is not known if these adults return to the same bromelials or even if their descendants also return. Thus the following work aims to understand the dynamics of occupation of Dendropsophus decipiens (Lutz, 1925) living in bromeliads during a dry and rainy period in bromelials located in the Alto da Buchada Forest in the Tapacurá ecological reserve in the metropolitan region of Recife. The collections were performed from October 2017 to October 2018, with a sampling effort of four people where the method used was the visual active search, done at night between 18:00 and 22:00. The collected specimens were weighed, measured individually marked by the elastomer technique. The abundance of anurans was 127 individuals collected and through this study found that precipitation and temperature were important factors in the presence or absence of these animals in the bromelials.Item Papel dos sinais químicos na seleção de recurso em Nasutitermes corniger (Blattodea: Isoptera)(2019-07-11) Silva, Aline do Nascimento Filgueira; Cristaldo, Paulo Fellipe; http://lattes.cnpq.br/0426390460269258; http://lattes.cnpq.br/1916876032100921Environments are formed by patches of resources with different suitability to the organisms. During foraging, organisms need to assess the costs and benefits involved in using a resource in order to make an appropriate choice for the exploration and use of that resource. An energy-efficient way of locating the resource to be explored is to use cues left by other organisms in the environment (i.e., social information). In the present study, we evaluated the role of intra- and interspecific chemical cues in the selection of food resource in Nasutitermes corniger (Termitidae: Nasutitermitinae). For this, we test the hypothesis that individuals of N. corniger are able to perceive and to avoid resources already used by different colonies of the same species and from different species. Initially, linear trail bioassays were conducted in order to verify the perception of intra- and interspecific chemical cues by N. corniger workers. Then, resource selection bioassays with a chance of choice were performed in order to evaluate the individuals' choice for food resources with intra- and interspecific chemical cues. In general, our results showed that chemical cues seem to modulate the food resource selection in N. corniger. The comprehension of the mechanisms involved in the resource selection plays a important role in the distribution of organisms in the environments, as well as the coexistence of termite species at local scale.