Abundance and distribution of Aculus schlechtendali on apple orchards in Southern of Brazil

The dispersion of insects and mites can be favored by many factors, including the increasing circulation of plant materials. Special attention is needed to the eriophyoid mites, which have a greater potential as introduced species, due to their physical and biological characteristics. Aculus schlechtendali (Nalepa) (Eriophyidae, Apple Rust Mite - ARM) is considered an important apple pest in several countries, being recently reported for the first time in Brazil. This study aimed to carry out a survey of the abundance and distribution of ARM in the Southern region of Brazil, in the cultivars Fuji, Gala and Eva, grown in the states of Rio Grande do Sul (RS), Santa Catarina (SC) and Paraná (PR). In addition, Moran's I autocorrelation was used as an analytical tool to assess the spatial dependence between the sample points. A total of 94 orchards were sampled in 19 municipalities, distributed in the three evaluated states. Regarding cultivars, there were 40 orchards of Fuji cultivar, 43 of Gala and 11 of Eva. At each one, 20 plants were selected, from which four leaves were collected, totaling 80 leaves/orchard. The screening and identification of the mites occurred at the Laboratório de Acarologia at the Universidade do Vale do Taquari – Univates, and the statistical analysis were made using generalized linear mixed models with subsequent paired analysis, using R-software. A total of 1,647 specimens of ARM were found in 66 orchards located in 17 municipalities, with an average number (mean ± standard deviation) of 24 ± 55 mites/orchard, 44 ± 83 in Fuji, 10 ± 19 in Gala and 17 ± 21 in Eva. The average number of mites differed between cultivars and states, with the lowest number in the cultivar Gala and in Rio Grande do Sul. No spatial autocorrelation was observed between the points, indicating that the dispersion of ARM in Southern Brazil has occurred at random, without a predefined pattern that would indicate a possible hotspot. The presence of this species serves as an alert for the apple production industry, regarding the distribution of a species previously not reported in the region. The recognition of the presence, abundance and distribution of this species will help in the monitoring and future management decisions, as well as the understanding of the distribution pattern.

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Crustacea, Isopoda, Oniscidea Latreille, 1802: new continent record and distribution extension in Brazil

Check List ◽

10.15560/6.2.217 ◽

2010 ◽

Vol 6 (2) ◽

pp. 217 ◽

Cited By ~ 8

Author(s):

Mariana Juventina Magrini ◽

Paula Beatriz Araujo ◽

Marcio Uehara-Prado

Keyword(s):

Rio Grande ◽

Sao Paulo ◽

The State ◽

Southeastern Brazil ◽

Pitfall Traps ◽

São Paulo ◽

Undescribed Species ◽

Rio Grande Do Sul ◽

Serra Do Mar ◽

First Time

Terrestrial Isopods were sampled in four protected Atlantic Forest areas located in Serra do Mar, state of São Paulo, southeastern Brazil. A total of 2,217 individuals of six species (Atlantoscia sp., Benthana werneri, Pseudodiploexochus tabularis, Pudeoniscus obscurus, Styloniscus spinosus and Trichorhina sp.) were captured in pitfall traps. The exotic species S. spinosus is recorded for the first time for the Americas. Another introduced species, P. tabularis, previously recorded only from the state of Rio Grande do Sul, had its geographic distribution extended to the state of São Paulo. The most abundant isopods in this study belong to an undescribed species of Atlantoscia.

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Acuariidae (Nematoda) in Procellariiformes (Aves) on the southern coast of Rio Grande do Sul, Brazil

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612017073 ◽

2018 ◽

Vol 27 (1) ◽

pp. 7-11

Author(s):

Camila Costa Schramm ◽

Carolina Silveira Mascarenhas ◽

Silvia Bainy Gastal ◽

Simone Scheer ◽

Gertrud Müller ◽

...

Keyword(s):

Digestive Tract ◽

Rio Grande ◽

Southern Coast ◽

Rio Grande Do Sul ◽

Aquatic Birds ◽

Diomedea Exulans ◽

Procellaria Aequinoctialis ◽

Calonectris Borealis ◽

First Time

Abstract Acuariidae nematodes are normally found in the digestive tract of aquatic birds, including Procellariiformes. Were examined Calonectris borealis (n = 4), Diomedea exulans (n = 1), Macronectes giganteus (n = 8), Thalassarche chlororhynchos (n = 5), Thalassarche melanophrys (n = 15), Procellaria aequinoctialis (n = 4), Puffinus gravis (n = 2) and Puffinus puffinus (n = 6), collected on the southern coast of RS, Brazil. A total of 16 birds (35.5%) were parasitized by two species of Acuariidae. Stegophorus diomedeae and Seuratia shipleyi were identified, with prevalences of 26.1% and 21.7%, respectively. Few studies on nematodes in Procellariiformes have been conducted. Here, the acuariids Seuratia shipleyi in Calonectris borealis and Procellaria aequinoctialis and Stegophorus diomedeae in Diomedea exulans, Procellaria aequinoctialis and Thalassarche chlororhynchos were reported for the first time.

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List of Odonates from the Floresta Nacional de São Francisco de Paula (FLONA - SFP), with two new distribution records for Rio Grande do Sul, Brazil

Biota Neotropica ◽

10.1590/1676-0611-bn-2015-0132 ◽

2016 ◽

Vol 16 (3) ◽

Cited By ~ 8

Author(s):

Samuel Renner ◽

Eduardo Périco ◽

Göran Sahlén

Keyword(s):

Rio Grande ◽

Rio Grande Do Sul ◽

Generalist Species ◽

Small Streams ◽

Specialist Species ◽

Ombrophilous Forest ◽

First Time ◽

Pristine Forest ◽

New Distribution ◽

Open Fields

Abstract A survey of Odonata was carried out in the National Forest FLONA - SFP, Northeastern region of the Rio Grande do Sul state, Brazil. This conservation unit is mainly covered by Mixed Ombrophilous Forest (MOF), a subtype of Atlantic Forest biome, being also areas covered in planted Pinus, planted Araucaria and open fields. Our sampling efforts were conducted in thirty aquatic environments inside this reserve during the period between January 2014 and November 2014. The sampling sites were selected randomly, comprehending lakes, bogs, small streams and river sections, all inserted in the four vegetation types occurring in the reserve. Fortysix species of Odonata were collected and grouped into 23 genera and seven families. The dominant families were Coenagrionidae (32%), Libellulidae (32%), Aeshnidae (12%), and, Calopterygidae and Lestidae (9%). As expected, the findings revealed the presence of a highly diverse Odonate assemblage, mainly represented by generalist species in the most human disturbed sectors (Pinus and Open fields) and some specialist species in the pristine forest. Two species were registered for the first time in the state of Rio Grande do Sul, Brazil: Libellula herculea Karsch, 1889 (Libellulidae) and Heteragrion luizfelipei Machado, 2006 (Heteragrionidae).

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O gênero Prosopis L. (Leguminosae Mimosoideae) no Rio Grande do Sul

Ciência e Natura ◽

10.5902/2179460x25025 ◽

1983 ◽

Vol 5 (5) ◽

pp. 171

Author(s):

José Newton Cardoso Marchiori ◽

Solon J. Longhi ◽

Luiz Galvão

Keyword(s):

Rio Grande ◽

Rio Grande Do Sul ◽

First Time

In this study the two species of the genus Prosopis native to Rio Grande do Sul (Brazil), are described. They are Prosopis algarobilla Gris., named “Inhanduvá”, and the “algarrobo”- Prosopis nigra (Gris.) Hieron. Prosopis nigra is cited for the first time for theflora of Rio Grande do Sul in this work.

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Novel cyphelloid fungi in Glabrocyphella, Heteroscypha, and Rectipilus from Brazil

Mycotaxon ◽

10.5248/134.481 ◽

2019 ◽

Vol 134 (3) ◽

pp. 481-488

Author(s):

Larissa Trierveiler-Pereira ◽

Juliano M. Baltazar ◽

R. Greg Thorn ◽

Adriana de Mello Gugliotta

Keyword(s):

New Records ◽

Rio Grande ◽

Rio Grande Do Sul ◽

Pale Yellow ◽

First Time

New records of cyphelloid fungi from Brazil are presented, based on specimens collected and identified by J. Rick and conserved at Herbarium PACA (São Leopoldo, Rio Grande do Sul). Glabrocyphella cyathiformis sp. nov. is characterized by small (0.1–0.5 mm diam.), pale yellow, turbinate basidiomes and ellipsoid to fusoid basidiospores (5–6 × 2–2.5 μm). Flagelloscypha malmei is recombined as Heteroscypha malmei comb. nov., and Rectipilus natalensis is reported for the first time from the Americas. Descriptions, photographs, and illustrations are presented for the three species.

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Eimeria spp. infection in lambs from southern Brazil

Pesquisa Veterinária Brasileira ◽

10.1590/1678-5150-pvb-6745 ◽

2020 ◽

Vol 40 (11) ◽

pp. 871-874

Author(s):

Natália S. Martins ◽

Sara P. da Motta ◽

Carolina C. Santos ◽

Andrios S. Moreira ◽

Nara A.R. Farias ◽

...

Keyword(s):

High Frequency ◽

Eimeria Species ◽

Rio Grande ◽

Wide Distribution ◽

Southern Brazil ◽

Rio Grande Do Sul ◽

Sheep Industry ◽

Eimeria Spp ◽

Potential Damage ◽

First Time

ABSTRACT: Eimeria infections are common in the sheep industry worldwide. Lambs are more susceptible to coccidiosis, especially in stressful conditions, being infected by different species of the parasite. Eimeria crandallis and Eimeria ovinoidalis are considered the most pathogenic, causing reduced growth, dehydration, anorexia, and death. In this study, the frequency of Eimeria species was evaluated in lambs from the southern region of the Rio Grande do Sul state, Brazil. Fecal samples from 248 lambs, from 19 farms, were tested for the presence of oocysts. The positive samples were re-examined and the sporulated oocysts analyzed morphometrically to identify the presence of Eimeria species. In 100% of the evaluated farms, there were animals positive for the protozoan. The frequency of Eimeria species was: E. ovinoidalis (94.74%), E. crandallis (89.47%), E. granulosa (78.95%), E. parva (68.42%), E. ahsata (63.13%), E. punctata (42.11%), E. bakuensis (36.84%), E. faurei (10.53%), and E. pallida (5.26%). Mixed infection was found in 94.74% of the samples. This research describes, for the first time, the occurrence of E. crandallis and E. ovinoidalis infecting lambs in the study area. The wide distribution of this protozoan and the high frequency of pathogenic species show the importance and potential damage of sheep coccidiosis in herds from Rio Grande do Sul.

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

Systematic and Applied Acarology ◽

10.11158/saa.23.6.14 ◽

2018 ◽

Vol 23 (6) ◽

pp. 1190

Author(s):

Noeli Juarez Ferla ◽

Darliane Evangelho Silva ◽

Denise Navia ◽

Joseane Moreira Do Nascimento ◽

Liana Johann ◽

...

Keyword(s):

Morphological Traits ◽

Rio Grande ◽

Apple Orchards ◽

Rio Grande Do Sul ◽

Country Report ◽

The Third ◽

Apple Leaves ◽

Potential Pest ◽

Relative Measurements ◽

Aculus Schlechtendali

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.

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A taxonomic study of Praxelinae (Asteraceae—Eupatorieae) in Rio Grande do Sul, Brazil

Phytotaxa ◽

10.11646/phytotaxa.393.2.5 ◽

2019 ◽

Vol 393 (2) ◽

pp. 141

Author(s):

ANDERSON LUIZ CHRIST ◽

MARA REJANE RITTER

Keyword(s):

Rio Grande ◽

The State ◽

Identification Key ◽

Geographical Range ◽

Taxonomic Study ◽

Rio Grande Do Sul ◽

Distribution Maps ◽

Taxonomic Treatment ◽

First Time

The Praxelinae comprises two genera—Praxelis and Chromolaena—and 19 species in Rio Grande do Sul, the southernmost State of Brazil. This is the first taxonomic treatment of these genera in the state according to their current circumscriptions. Chromolaena squarrosoramosa is formally reported for the first time for the flora of the state. The names C. callilepis and C. paraguariensis are used for the first time to refer to species previously known as Eupatorium polyanthum and E. angusticeps. Eupatorium angusticeps, considered in previous studies endemic to Rio Grande do Sul and probably extinct, is synonymized under C. paraguariensis and has its geographical range extended. Two neglected names, C. elliptica and C. latisquamulosa, are re-established, and C. umbelliformis is synonymized under C. elliptica. Furthermore, C. rhinanthacea is recollected for the first time after 40 years, and C. gentianoides is rediscovered in the state after almost 200 years of the original collection. Identification key and morphological descriptions, as well as distribution maps, field photographs, illustrations and general comments on the biology, ecology and identification of the species are provided.

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Further records of the opossum shrimp Neognathophausia ingens (Dorhn, 1870) (Peracarida: Lophogastrida: Gnathophausiidae) from Brazil

Zootaxa ◽

10.11646/zootaxa.4577.2.9 ◽

2019 ◽

Vol 4577 (2) ◽

pp. 371

Author(s):

AUGUSTO FREDERICO HUBER ◽

FELIPE BEZERRA RIBEIRO ◽

PAULA BEATRIZ DE ARAUJO

Keyword(s):

New Records ◽

Rio Grande ◽

The State ◽

Rio Grande Do Sul ◽

Distribution Map ◽

Western Atlantic ◽

Body Regions ◽

Opossum Shrimp ◽

First Time ◽

Synonym List

Neognathophausia ingens (Dohrn, 1870) is a bathypelagic crustacean distributed worldwide. In the western Atlantic it has been recorded off the La Plata region, Argentina, and off the coast of Brazil, from the state of Bahia to Rio de Janeiro. We provide new records of N. ingens from the state of Rio Grande do Sul, Brazil, about 1188 km south of its previous distribution limit off Brazil, filling the gap between the central West Atlantic and Argentina. Five specimens were analyzed and drawings for all body regions and appendages are presented. Mandible, thoracopods 2, 4, 5, 6 and 8 and pleopods are illustrated and described for the first time. An updated synonym list and a distribution map for this species in Brazil are provided.

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Revalidation and revision of the genus Magulla Simon 1892 (Araneae, Mygalomorphae, Theraphosidae)

Zootaxa ◽

10.11646/zootaxa.1814.1.2 ◽

2008 ◽

Vol 1814 (1) ◽

pp. 21 ◽

Cited By ~ 11

Author(s):

RAFAEL P. INDICATTI ◽

SYLVIA M. LUCAS ◽

JOSÉ P. L. GUADANUCCI ◽

FLÁVIO U. YAMAMOTO

Keyword(s):

New Species ◽

Type Species ◽

Rio Grande ◽

Sao Paulo ◽

Junior Synonym ◽

Valid Species ◽

São Paulo ◽

Rio Grande Do Sul ◽

Two New Species ◽

First Time

The genus Magulla Simon 1892 is revalidated and redescribed. The female of the type species M. obesa Simon 1892 is redescribed and the male is described for the first time. Magulla janeirus (Keyserling 1891) is considered a valid species. Magulla symmetrica Bücherl 1949 is transferred to Plesiopelma Pocock 1901, and considered a junior synonym of P. insulare (Mello-Leitão 1923). Additionally, two new species are described from Brazil: M. buecherli n. sp. from Ilhabela, São Paulo and M. brescoviti n. sp. from São Francisco de Paula, Rio Grande do Sul.

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