scholarly journals Diploposthe laevis (Bloch) Jacobi (Eucestoda, Hymenolepididae) from Netta peposaca (Vieillot) (Aves: Anatidae): first record for the Neotropical Region and a new host

2008 ◽  
Vol 25 (1) ◽  
pp. 83-88
Author(s):  
Eliane F. da Silveira ◽  
Suzana B. Amato
Keyword(s):  
South America ◽  
Rio Grande ◽  
First Record ◽  
Neotropical Region ◽  
Rio Grande Do Sul ◽  
New Host ◽  
Histological Sections ◽  
Nesting Site ◽  
The Mean ◽  
Collection Sites

One hundred eight rosy-billed pochards, Netta peposaca (Vieillot, 1816), collected in Brazil and Argentina were examined for endoparasites. Collection sites included the municipalities of Santa Vitória do Palmar and Jaguarão, Rio Grande do Sul State, Brazil (wintering site) and Alvear, Corrientes Province, northern Argentina (nesting site). Birds were frozen in dry ice after collection. During necropsy they were categorized according to sex and maturation, either adult or juvenile. The cestode Diploposthe laevis (Bloch) Jacobi, 1896 was found (prevalence 68.5%, mean infection was 2). The mean prevalence of D. laevis in Alvear (25.9%) was higher than found in Jaguarão and Santa Vitória do Palmar, Rio Grande do Sul (19%), and could be related to the nesting site and to the period when the birds may ingest a higher amount of food. This is the first record of a species of the genus Diploposthe in anatideans from South America, and the first record of the species in N. peposaca. Details of the cirrus pouch and vagina were described based on histological sections.

scholarly journals New species of Temnocephala (Platyhelminthes, Temnocephalida) ectosymbiont on vulnerable species of aeglids (Crustacea, Anomura) from the Neotropical Region

2018 ◽  
Vol 18 (4) ◽  
Author(s):  
Samantha Alves Seixas ◽  
Norton Dametto ◽  
Eduardo Périco
Keyword(s):  
New Species ◽  
Reproductive System ◽  
Rio Grande ◽  
First Record ◽  
Neotropical Region ◽  
Vulnerable Species ◽  
Rio Grande Do Sul ◽  
Anterior Portion ◽  
Vaginal Sphincter ◽  
A New Species

Abstract: A new species of the genus Temnocephala Blanchard, 1849 from southern Brazil was found on two species of anomuran crustaceans, Aegla spinipalma Bond-Buckup & Buckup, 1994 and Aegla grisella Bond-Buckup & Buckup, 1994, the latter classified as a vulnerable species by the "Lista de Referência da Fauna Ameaçada de Extinção no Rio Grande do Sul. Decreto no 41.672, de 11 junho de 2002". The crustaceans were collected from a tributary creek of the Forqueta river, Perau de Janeiro, Arvorezinha and a tributary creek of the Fão river, Pouso Novo, Rio Grande do Sul, Brazil; both localities belong to the Sub-Basin of Forqueta River. The new species differs from seven other temnocephalans epibionts on Aegla Leach, 1820, by having the following characters: 1. a long and slightly curved cirrus, 2. two vaginal sphincters, one proximal, big and asymmetric, and one distal, smaller and symmetric, and; 3. longer than wide, elongated epidermal 'excretory' syncytial plates (EPs), with a almost horizontally central excretory pore, displaced to the anterior portion of the plate. The new species' EP is the largest in total length among epibionts temnocephalans in crustaceans already registered. Regarding the similarities with the male reproductive system of Temnocephala axenosMonticelli, 1898, the new species has important differences in the female reproductive system. It has a larger proximal vaginal sphincter, located in the middle of the vagina, while the smaller distal one is at the extreme end of the organ. Besides that, the vaginal portion between the proximal and distal sphincters is conspicuous, with a strong muscular wall. This is the first record of a species of Temnocephala in the Taquari Valley, as well in the 'Perau de Janeiro', which is an area with a rich endemic fauna.

scholarly journals Occurrence of Chandleronema longigutturata (Nematoda: Acuariidae) in Procyon cancrivorus in the Neotropical region

2015 ◽  
Vol 24 (1) ◽  
pp. 105-107 ◽  
Author(s):  
Alice Graciela Rodriguez Suárez ◽  
Tatiana Cheuiche Pesenti ◽  
Márcia Raquel Pegoraro de Macedo ◽  
Carolina Silveira Mascarenhas ◽  
Gertrud Müller Antunes
Keyword(s):  
Central America ◽  
Rio Grande ◽  
First Record ◽  
Neotropical Region ◽  
Wild Animal ◽  
Motor Vehicles ◽  
Rio Grande Do Sul ◽  
Carnivore Species ◽  
Mucous Membranes ◽  
Northeastern Argentina

Procyon cancrivorus is a wild animal that is found from Central America to Uruguay and northeastern Argentina. It is one of the least studied carnivore species in Brazil. For the purpose of identifying helminths that parasitize P. cancrivorus, individuals of this species that had been run over and killed by motor vehicles were collected from highways in the southern part of the state of Rio Grande do Sul. At necropsy, their organs, along with organ contents and mucous membranes, were examined for parasite collection. The nematodes found in the stomachs of these Procyonidae were cleared with lactophenol and Chandleronema longigutturata was identified. This report provides the first record of occurrences of C. longigutturata in the Neotropical region and its parasitism in P. cancrivorus.

scholarly journals First record of Hexacladia hilaris Burks (Hymenoptera: Encyrtidae) in Brazil and association with Chinavia erythrocnemis (Berg) (Heteroptera: Pentatomidae)

2020 ◽  
Vol 13 ◽  
pp. e927
Author(s):  
Alberto Luiz Marsaro Júnior ◽  
Valmir Antonio Costa ◽  
Antônio Ricardo Panizzi
Keyword(s):  
United States ◽  
Costa Rica ◽  
South America ◽  
Rio Grande ◽  
First Record ◽  
Stink Bug ◽  
Rio Grande Do Sul ◽  
Heteroptera Pentatomidae

Hexacladia hilaris Burks (Hymenoptera: Encyrtidae) is a parasitoid associated to several stink bug species in Costa Rica, Porto Rico and United States. In April 2018, at the Passo Fundo (28º15’46” S / 52º24’24” O), Rio Grande do Sul state, Brazil, specimens of H. hilaris were collected from Chinavia erythrocnemis (Berg) (Heteroptera: Pentatomidae). This is the first record of this parasitoid in South America as well as its association with C. erythrocnemis.

scholarly journals New records of helminths in Chelidae freshwater turtles (Testudines) in South America

2020 ◽  
Vol 21 (1) ◽  
pp. 1-11
Author(s):  
Bruna Medeiros Chaviel ◽  
Carolina Silveira Mascarenhas ◽  
Fabiana Fedatto Bernardon ◽  
Marco Antonio Afonso Coimbra ◽  
Gertrud Müller
Keyword(s):  
South America ◽  
Geographic Distribution ◽  
New Records ◽  
Rio Grande ◽  
Southern Region ◽  
Helminth Parasites ◽  
Freshwater Turtles ◽  
Rio Grande Do Sul ◽  
New Host ◽  
Gastrointestinal Helminth

Helminthological studies with Chelidae freshwater turtles in South America were conducted in Argentina, Uruguay and Brazil, where nematodes, digeneans and monogeneans were reported. In this context, the study aims to report new cases of gastrointestinal helminth parasites of Acanthochelys spixii, Hydromedusa tectifera, and Phrynops hilarii. A total of 65 hosts from the southern region of Rio Grande do Sul, Brazil, were examined. Seven taxa belonging to Nematoda, Digenea, and Monogenoidea have new cases on hosts Chelidae in South America, as well as a Nematoda and two Digenea have new host cases for Brazil. Thus, the study expands the knowledge about the diversity of helminths and the geographic distribution of taxa associated with Chelidae turtles.

scholarly journals Echinuria uncinata (Rudolphi) (Nematoda, Acuariidae) in Netta peposaca (Vieillot) (Aves, Anatidae) in South America

2006 ◽  
Vol 23 (2) ◽  
pp. 520-528 ◽  
Author(s):  
Eliane F. da Silveira ◽  
José F. R. Amato ◽  
Suzana B. Amato
Keyword(s):  
South America ◽  
Coastal Region ◽  
Rio Grande ◽  
The State ◽  
Bursa Of Fabricius ◽  
Rio Grande Do Sul ◽  
Wintering Grounds ◽  
Breeding Grounds ◽  
Males And Females ◽  
The Mean

This is the first report of a species of Echinuria Soloviev, 1912, on anatid hosts in South America, causing granulomas. It is also the first detailed description and record of a species of Echinuria, for South America in the Rosy-billed Pochard, Netta peposaca (Vieillot, 1816). Fifty-two rosy-billed pochards were examined for helminths in the Municipalities of Santa Vitória do Palmar (locality of Fazenda Sossego) and (locality of Ponta da Antena), State of Rio Grande do Sul, Brazil, and Alvear, Province of Corrientes, northern Argentina. Samples were obtained from 2003 to 2004. After the catch each bird was immediately frozen with dry ice. Prior to necropsy birds were sexed, weighted, measured, and the state of maturity (juvenile or adult) determined, based on the presence or absence of a bursa of Fabricius. The granulomas with the nematodes were found in the proximal esophagus at the junction with the proventriculus. Two birds had one (fistulated) and two granulomas, respectively. One of the birds was from the wintering grounds along the coastal region in the State of Rio Grande do Sul, southern Brazil. The other, from one of the breeding grounds in northern Argentina, was captured before the trip to the wintering grounds along the migratory flyway. Prevalence was 3.8% while the mean intensity of infection was 7.2. Morphometry of males and females and the comparison with previous descriptions and illustrations allowed the identification of the present specimens as E. uncinata.

Notes on slender species of the long-jawed spider genus Tetragnatha (Araneae, Tetragnathidae) with description of three new species

Zootaxa ◽  
2020 ◽  
Vol 4768 (1) ◽  
pp. 43-75
Author(s):  
PEDRO DE SOUZA CASTANHEIRA ◽  
RENNER LUIZ CERQUEIRA BAPTISTA
Keyword(s):  
New Species ◽  
Rio Grande ◽  
First Record ◽  
Neotropical Region ◽  
Sao Paulo ◽  
São Paulo ◽  
Rio Grande Do Sul ◽  
Nomina Dubia ◽  
Males And Females ◽  
Three New Species

New data about slender orb-weaving species of the cosmopolitan genus Tetragnatha are presented. Tetragnatha chauliodus (Thorell, 1890) and Tetragnatha tenuissima O. Pickard-Cambridge, 1889 are redescribed, including one synonymy for each species and the first record of the first species to the Neotropical region. Also, three new species are herein described, all based on males and females. Tetragnatha megalocera new species is recorded exclusively from Brazil (Espírito Santo, Rio de Janeiro, Rio Grande do Sul and São Paulo states), while Tetragnatha renatoi new species is recorded from Venezuela, Argentina (Misiones) and Brazil (Paraná, Pernambuco, Rio Grande do Sul, Rondônia, Santa Catarina and São Paulo states). Finally, Tetragnatha chiyokoae new species is described from Yunnan province (China) and Okinawa (Japan), with an additional record for Taiwan. Furthermore, Tetragnatha exilima (Mello-Leitão, 1943), Tetragnatha filigastra Mello-Leitão, 1943 and Tetragnatha lactescens (Mello-Leitão, 1947) are nomina dubia. 

scholarly journals Extending the distribution of Ramalina lacera (With.) J. R. Laundon (Ramalinaceae, lichen forming Ascomycota): first record from eastern South America

Check List ◽  
2014 ◽  
Vol 10 (1) ◽  
pp. 195 ◽  
Author(s):  
Emerson Luiz Gumboski ◽  
Sionara Sionara ◽  
Rosa Mara Borges Da Silveira
Keyword(s):  
South America ◽  
Rio Grande ◽  
First Record ◽  
The State ◽  
Rio Grande Do Sul ◽  
Distribution Map ◽  
First Time

The lichen forming fungus Ramalina lacera is reported for the first time from Brazil. The specimens were collected in the State of Rio Grande do Sul (Southern of Brazil), only on rocks and between 210 m to 350 m altitude. A distribution map, figure and comments on the species are provided.

scholarly journals Occurrence of Amblyomma longirostre in Ramphastos dicolorus in Southern Brazil

2009 ◽  
Vol 39 (3) ◽  
pp. 930-932 ◽  
Author(s):  
João Fabio Soares ◽  
Claudia Dal Molin Soares ◽  
Miguel Gallio ◽  
Aleksandro Schafer da Silva ◽  
Juliana Pereira Moreira ◽  
...  
Keyword(s):  
Central America ◽  
Adult Stage ◽  
Rio Grande ◽  
Host Record ◽  
The United States ◽  
Neotropical Region ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
New Host ◽  
New Host Record

The species Amblyomma longirostre Koch, 1844 is poorly known in the state of Rio Grande do Sul. Usually the adult stage could be found on Sphigurus spp. and the immatures on birds (Passeriformes). Although A. longirostre is distributed in the Neotropical region, from Panama to Uruguay, it also occurs in Central America and the United States. The aim of this study was to report that Ramphastos dicolorus Linnaeus 1766 is a new host record for this tick species.

scholarly journals First report of Pterinotrematoides mexicanum Caballero & Bravo-Hollis, 1955 (Monogenea, Macrovalvitrematidae) in Micropogonias furnieri (Desmarest, 1823) (Perciformes, Sciaenidae) from the coastal zone of the state of Rio Grande do Sul, Brazil

Check List ◽  
2015 ◽  
Vol 11 (2) ◽  
pp. 1568
Author(s):  
Moisés Gallas ◽  
Eliane Fraga Da Silveira ◽  
Eduardo Périco
Keyword(s):  
South America ◽  
Coastal Zone ◽  
Rio De Janeiro ◽  
Rio Grande ◽  
First Record ◽  
The State ◽  
Rio Grande Do Sul ◽  
First Report ◽  
Micropogonias Furnieri

: In South America, Pterinotrematoides mexicanum Caballero & Bravo-Hollis, 1955 has been reported in the state of Rio de Janeiro, Brazil, and in Argentina parasitizing Micropogonias furnieri (Des­marest, 1823). In this paper, the first record of P. mexicanum in the same host from the coastal zone of the state of Rio Grande do Sul, Brazil is presented, filling a gap of occurrence of P. mexicanum. The morphology of P. mexicanum is re­described and compared with that of Neopterinotrematoides avaginata Suriano, 1975.

scholarly journals First record of the family Gigaspermaceae (Bryophyta) in Brazil

Hoehnea ◽  
2020 ◽  
Vol 47 ◽  
Author(s):  
Denilson Fernandes Peralta ◽  
Juçara Bordin ◽  
Daiane Valente Valente ◽  
Paulo Eduardo Aguiar Saraiva Câmara ◽  
Michael Stech
Keyword(s):  
South America ◽  
Rio Grande ◽  
First Record ◽  
Rio Grande Do Sul ◽  
Pampa Biome ◽  
The Family ◽  
Common Plant ◽  
Pale Green

Abstract Lorentziella imbricata (Mitt.) Broth. belongs to the family Gigaspermaceae and is a common plant in the subtropical regions of the Noth and South America. This plant can be characterized by presenting leafy stems arising from subterranean rhizomatous axes, pale green or often whitish leaves, and sessile large capsules with large spores. This is the first citation of the genus Lorentziella and the family Gigaspermaceae for Brazil, found during field collections in the Pampa biome, state of Rio Grande do Sul.

Sign in / Sign up

Export Citation Format

Share Document