Species composition and diel variation of a butterfly taxocene (Lepidoptera, Papilionoidea and Hesperioidea) in a restinga forest at Itapuã State Park, Rio Grande do Sul, Brazil

The composition and the hourly variation of butterfly species (Lepidoptera: Papilionoidea and Hesperioidea) throughout the day and the seasons was evaluated in a 1,000 m² patch of sandy forest (Restinga forest) on a coastal plain at Itapuã State Park (30º22'S, 51º02'W), Viamão, Rio Grande do Sul, from July 2001 to June 2002. Butterflies were sampled by scanning and focal observations (adapted from ALTMANN 1974) carried out at successive 45 minutes intervals. This methodology proved to be effective in recording the presence and activity of butterflies on a small area. A total of 108 observation hours yielded 326 butterflies from 41 species, 33 genera and five families. Nymphalidae was the most abundant family contributing with 74% of the total individuals. The most abundant species was Eunica eburnea Fruhstorfer, 1907 (Nymphalidae) with 45 individuals registered along the year. General diversity estimates were Dmg = 6.912, H' = 3.012 and d = 0.138. Although there were variations in the daily times of butterfly activity throughout the seasons, there was a general trend for higher activity during the morning period, between 9:00 and 11:45 h.

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Composition, abundance and biomass of a fish assemblage in a southern Brazilian coastal stream during polyhaline/euhaline condition

Biota Neotropica ◽

10.1590/1676-0611-bn-2018-0585 ◽

2018 ◽

Vol 19 (1) ◽

Author(s):

Fernando Marques Quintela ◽

Fabiano Corrêa ◽

Adriana Gava

Keyword(s):

Coastal Plain ◽

Rio Grande ◽

Great Majority ◽

Abundant Species ◽

Rio Grande Do Sul ◽

Perennial Stream ◽

Geophagus Brasiliensis ◽

Coastal Streams ◽

Species Being ◽

Central South

Abstract: The coastal streams of southernmost Brazil, Rio Grande do Sul state, are marked by a period of regular marine intrusion resultant from intense oceanic winds. In the present study we aimed to investigate the species composition, abundance and relative biomass of the ichthyofauna in the lower stretch of a coastal stream during summer, a period of regular marine intrusion. Estreito is a coastal hydrological complex composed by lakes, swamps and a perennial stream, located at the central-south portion of the coastal plain of Rio Grande do Sul state. During the summer of 2018, the ichthyofauna of lower Estreito stream was sampled by beach hauls applied in 17 random points distributed in a stretch of ca. 2km. Measurements at the sampled stretch revealed salinities between 19.3 to 31.3 ppt, characterizing the studied system as polyhaline/euhaline during summer. The sample of 4,533 specimens revealed the occurrence of 20 species, being the great majority marine-dwelling. The most abundant species were the anablepid Jenynsia lineata (70.3%), the cichlid Geophagus brasiliensis (19.3%) and the the mugilid Mugil curema (7.5%). The highest relative biomass was recorded for J. lineata, followed by M. curema and G. brasiliensis. The dominance of marine-dwelling species in the assemblage composition and the high abundance of limnic-estuarine J. lineata corroborate previous studies conducted in other washouts of Rio Grande do Sul.

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Molecular Detection of Trypanosoma kaiowa in Tabanus triangulum (Diptera: Tabanidae) from the Coastal Plain of Rio Grande do Sul, Southern Brazil

Acta Parasitologica ◽

10.1007/s11686-021-00440-1 ◽

2021 ◽

Author(s):

Gratchela D. Rodrigues ◽

Eduardo Blodorn ◽

Ândrio Zafalon-Silva ◽

William Domingues ◽

Roberta Marques ◽

...

Keyword(s):

Coastal Plain ◽

Molecular Detection ◽

Rio Grande ◽

Southern Brazil ◽

Rio Grande Do Sul

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Provenance of Heavy Minerals for the Quaternary Coastal Plain of Southernmost Brazil (Rio Grande do Sul State)

Journal of Coastal Research ◽

10.2112/jcoastres-d-18-00066.1 ◽

2019 ◽

Vol 35 (2) ◽

pp. 295

Author(s):

Julierme Justin Carassai ◽

Ernesto Luiz Correa Lavina ◽

Farid Chemale Junior ◽

Tiago Jonatan Girelli

Keyword(s):

Coastal Plain ◽

Rio Grande ◽

Heavy Minerals ◽

Rio Grande Do Sul

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Taphonomic signatures in molluscan fossil assemblages from the Holocene lagoon system in the northern part of the coastal plain, Rio Grande do Sul State, Brazil

Quaternary International ◽

10.1016/j.quaint.2013.03.013 ◽

2013 ◽

Vol 305 ◽

pp. 5-14 ◽

Cited By ~ 9

Author(s):

Matias do Nascimento Ritter ◽

Fernando Erthal ◽

João Carlos Coimbra

Keyword(s):

Coastal Plain ◽

Rio Grande ◽

Rio Grande Do Sul ◽

The Holocene ◽

Lagoon System ◽

Fossil Assemblages

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Three new species of Hyalella (Crustacea: Amphipoda: Hyalellidae) from the Southern Brazilian Coastal Plain

Zootaxa ◽

10.11646/zootaxa.4970.2.2 ◽

2021 ◽

Vol 4970 (2) ◽

pp. 257-292

Author(s):

JORDAN TUPARAI TALHAFERRO ◽

ALESSANDRA ANGÉLICA DE PÁDUA BUENO ◽

MATEUS MARQUES PIRES ◽

CRISTINA STENERT ◽

LEONARDO MALTCHIK ◽

...

Keyword(s):

New Species ◽

Body Surface ◽

Coastal Plain ◽

Rio Grande ◽

Plumose Seta ◽

The State ◽

Rio Grande Do Sul ◽

Santa Catarina ◽

Smooth Body ◽

Three New Species

In this study, three new species of Hyalella (Crustacea: Amphipoda: Hyalellidae) are described based on specimens collected in wetlands located in three freshwater ecoregions (Southeastern Mata Atlântica, Tramandaí-Mampituba and Laguna dos Patos) of the southern Brazilian Coastal Plain (states of Rio Grande do Sul and Santa Catarina). Hyalella minuana n. sp. was recorded in the southernmost region of the state of Rio Grande do Sul. This species is characterized by presenting smooth body surface, epimeral plates not acuminated, nine serrate setae on the inner face of gnathopod 1, and peduncle of uropod 3 with four cuspidate setae with accessory seta and without plumose seta on the margin of the telson. Hyalella lagoana n. sp. was recorded in the northern region of Rio Grande do Sul and southern region of Santa Catarina. This species shows body surface smooth, epimeral plates not acuminated, nine serrate setae on the inner face of gnathopod 1, peduncle of uropod 3 with five cuspidate setae with accessory seta, and telson with six cuspidate setae with accessory seta without plumose seta on the margins. Hyalella sambaqui n. sp. was recorded in the state of Santa Catarina. This species is characterized by presenting smooth body surface, epimeral plates not acuminated, six serrate setae on the inner face of gnathopod 1, peduncle of uropod 3 with three cuspidate setae with accessory seta, and telson with three cuspidate setae with accessory seta and four plumose setae on the margin of the telson. The new records elevates the known diversity of species of Hyalella in the Brazilian territory to 33 species (19 in the southern Brazilian region) and to 83 species in the Americas.

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