Darliane Evangelho Silva

REGISTRO DE LEUCISMO EM CARDEAL Paroaria coronata (MILLER, 1776) NO SUL DO BRASIL

Este estudo apresenta um caso de leucismo em Cardeal Paroaria coronata (Miller, 1776) (Passeriformes: Thraupidae), no nunicipio de Sao Sepe, regiao central do Estado do Rio Grande do Sul. O especime apresentou iris, penas, plumas, bico e tarsos despigmentados, enquanto que o topete tinha cor vermelho-vivo, semelhante a coloracao original da especie. Palavras-Chave: Paroaria coronata ;Passeriformes;Plumagem; Rio Grande do Sul; Thraupidae

MONITORAMENTO DE VERTEBRADOS ATROPELADOS EM DOIS TRECHOS DE RODOVIAS NA REGIÃO CENTRAL DO RIO GRANDE DO SUL - BRASIL

The run over of animals on roads currently represent a pronounced threat to the wild fauna. Through road-killed vertebrate monitoring in sections of two roads in the central region of Rio Grande do Sul, between 2008 and 2009, we listed the species and the groups most involved. 104 incursions in the study sections were done, totalizing 3,016 km of roadways traveled in 12 months. 49 road-killed wild species were found, belonging to 29 families in a total of 419 specimens. The most representative groups were mammals and birds.

Seasonal and environmental variations in community structure of house dust mites (Acari) in subtropical southern Brazil

ABSTRACT House dust mites (HDM) are globally distributed in human habitats. The most favourable locations for their development are carpets, curtains, couches, mattresses and pillows. This association with indoor environments makes HDM one of the most important sources of indoor allergens. Distribution and concentration may be influenced by food availability, temperature and, mostly, humidity. This study investigated seasonal and environmental patterns in HDM communities in order to understand the influence of housing type and climate conditions on their richness, abundance and concentration. We sampled four different types of housing (brick houses, wooden houses, carpeted apartments and tiled-floor apartments) and four habitats (double mattress, couch, curtain and carpet). We carried out four samplings in 2010, each one in a season of the year, and collected a total of 128 samples. We analysed richness, abundance and concentration of all sample units. We found a total of 1653 mites. Blomia tropicalis (van Bronswijk, Cock & Oshima, 1973), Dermatophagoides farinae Hughes, 1961 and Tarsonemus fusarii Cooreman, 1941 were the most abundant species. All variables tended to decrease from winter to summer. Wooden and carpeted houses had higher richness and abundance than brick houses and tiled-floor apartments. Curtain had the highest concentration, followed by double mattress, couch and carpet. We found seasonal and environmental variations in the community structure of HDM. Concluding, we demonstrated the prevalence of allergenic indoor mites in the coldest months, in more favourable conditions of wooden and carpeted houses. This study indicates that through careful regulation of climatic conditions, housekeeping policies and laundering procedures, dust mite and allergen levels can be controlled even in a climate suitable for the development of breeding mite populations.

Aves, Tinamidae, Crypturellus noctivagus noctivagus (Wied, 1820): Southward range extension and rediscovery in Rio Grande do Sul, Brazil

We present here the record of the rediscovery of C rypturellus noctivagus noctivagus in the state of Rio Grande do Sul, Brazil, in a forest area on the border of Sao Sepe and Formigueiro municipalities. The species was considered probably extinct in the state, being unrecorded for about three decades.

Occurrence of the quarantine mite pest Aculus schlechtendali (Acari: Eriophyidae) in apple orchards of Serra Gaúcha, Rio Grande do Sul state, Brazil

Abstract The aim of this work is to report the presence of Aculus schlechtendali (Nalepa, 1890) (Prostigmata: Eriophyidae) (Apple rust mite—ARM), in apple orchards of Serra Gaúcha, state of Rio Grande do Sul, Brazil. Surveys were conducted from apple leaves of Gala cultivar in a commercial orchard of Vacaria County (S 28′ 34.540 W 050′ 52.153) in the Northeast region of the state of Rio Grande do Sul, between November 2016 and January of 2017. The morphological traits and the relative measurements matched with those of A. schlechtendali. This is the first report of this mite pest in Brazil, so far regulated as a quarantine pest, and the third country report in South America. Consideration on the potential pest status of ARM is discussed.

Mite fauna associated with bird nests in Southern Brazil

Abstract Interactions between birds and mites have allowed mites to act as ectoparasites or to be associated with the micro-environments of nests. The aim of this study was to identify the mite fauna associated with wild bird nests in the rural and urban zones of different environments, and analyze the importance of birds as potential carriers of these organisms to households or poultry houses. In the rural zone, the following environments were assessed: Countryside (C), Forest (F), Aquatic (A), Orchards (O), and Residential (R), and in the urban zone, a similar division was used (C, O, R), with absence of environments (A) and (F). Apart from the Suborder Oribatida found in the 52 bird nests sampled in both zones, a total of 24,274 mites were collected and identified as 67 species in 34 families. There was a predominance of mites in the rural zone (90%), with higher richness in (C) of both zones and higher abundance in (R) and (A) of the rural zone and (O) of the urban zone. Mite species of medical-veterinary importance with the highest abundance were Ornithonyssus bursa in nests of Certhiaxis cinnamomeus and Columbina picui; Tyrophagus putrescentiae in nests of Columbina picui and Pitangus sulphuratus; and Dermatophagoides pteronyssinus in nests of Troglodytes musculus and Pitangus sulphuratus. This study showed that the wild bird nests are depositories of mites, including ectoparasites of medical-veterinary importance.

Molothrognathus brasiliensis sp. nov. (Acari: Caligonellidae) and the first report of Paraneognathus wangae for Brazil

Abstract A new species of Molothrognathus Summers and Schlinger (1955) (Caligonellidae), Molothrognathus brasiliensis Silva, Brentano & Ferla sp. nov., is described and illustrated, and Paraneognathus wangae (Fan & Li, 1995) is reported for the first time from south of Brazil.

REGISTRO DE COMPORTAMENTO PREDATÓRIO EM Leptodactylus latrans (ANURA, LEPTODACTYLIDAE), POR Guira guira (AVES,CUCULIDAE), NO SUL DO BRASIL

Herein, we report predation of a juvenile Leptodactylus latrans by Guira guira, in an urban area of the Formigueiro municipality, Central Region in the State of Rio Grande do Sul. This observation contributes to additional information about the behavior in feeding habits of the Cuculidae birds family.