New record and biological features of the commensal porcellanid crab Polyonyx gibbesi (Crustacea: Anomura) from the north-eastern Brazilian coast

2012 ◽  
Vol 5 ◽  
Author(s):  
Gustavo Luis Hirose
Keyword(s):  
New Record ◽  
Brazilian Coast ◽  
Biological Features ◽  
The North ◽  
North Eastern

scholarly journals Morphological description of six species of Suberitida (Porifera: Demospongiae) from the unexplored north-eastern coast of Brazil, with emphasis on two new species

2020 ◽  
Vol 100 (3) ◽  
pp. 389-400
Author(s):  
Humberto F. M. Fortunato ◽  
Thierry Pérez ◽  
Gisele Lôbo-Hajdu
Keyword(s):  
Current Knowledge ◽  
Atlantic Coast ◽  
Marine Sponges ◽  
Eastern Coast ◽  
Morphological Description ◽  
Brazilian Coast ◽  
Northern Coast ◽  
Western Atlantic ◽  
The North ◽  
North Eastern

AbstractThe Order Suberitida is defined as a group of marine sponges without an obvious cortex, a skeleton devoid of microscleres, and with a deletion of a small loop of 15 base pairs in the secondary structure of the 28S rDNA as a molecular synapomorphy. Suberitida comprises three families and 26 genera distributed worldwide, but mostly in temperate and polar waters. Twenty species were reported along the entire Brazilian coast, and although the north-eastern coast of Brazil seems to harbour a rich sponge fauna, our current knowledge is concentrated along the south-eastern Atlantic coast. A survey was implemented along the northern coast of Brazil, and the collection allowed the identification of six species belonging to the Order Suberitida. Two of them are considered new to science: Suberites purpura sp. nov., Hymeniacidon upaonassu sp. nov., and four, Halichondria (Halichondria) marianae Santos, Nascimento & Pinheiro, 2018, Halichondria (H.) melanadocia de Laubenfels, 1936, Suberites aurantiacus (Duchassaing & Michelotti, 1864), and Terpios fugax Duchassaing & Michelotti, 1864, are re-described. Taxonomic comparisons are made for Tropical Western Atlantic species and type species of the four genera. Finally, an identification key for the Western Atlantic Suberites species is provided.

Soil genesis on hypersaline tidal flats (apicum ecosystem) in a tropical semi-arid estuary (Ceará, Brazil)

Soil Research ◽  
2014 ◽  
Vol 52 (2) ◽  
pp. 140 ◽  
Author(s):  
A. G. B. M. Albuquerque ◽  
T. O. Ferreira ◽  
G. N. Nóbrega ◽  
R. E. Romero ◽  
V. S. Souza Júnior ◽  
...  
Keyword(s):  
Tidal Flat ◽  
Coastal Wetland ◽  
Anthropogenic Activities ◽  
Analytical Data ◽  
Clay Fraction ◽  
Tidal Flats ◽  
Brazilian Coast ◽  
The North ◽  
North Eastern ◽  
Semi Arid

Wetland soils, especially those under a semi-arid climate, are among the least studied soils in the tropics. The hypersaline tidal flats on the north-eastern Brazilian coast, locally named apicum, are coastal wetland ecosystems in the peripheral portions of semi-arid estuaries. Despite their great ecological importance, they have been highly impacted by anthropogenic activities. Morphological and analytical data of six soil profiles, representative of the different coastal compartments (mangroves, apicum and coastal tablelands) of the north-eastern Brazilian coast, were examined to better understand the pedogenesis of apicum soils. The hypersaline tidal flat soils were classified as Typic Fluvaquents and Typic Sulfaquents with the following main characteristics: predominance of sand fraction (62–77%); presence of high-activity clays (>24 cmolc kg–1 clay); clay fraction comprising kaolinite, illite, smectite and an interstratified smectite/illite; exchangeable complex dominated by Na+ (ESP ≥15%); elevated levels of salinity (electrical conductivity, EC 25–44 dS m–1); alkaline pH values (7.5–9.5). The sandy texture and quartz-dominated composition of the hypersaline, tidal flat soils indicate a pedogenesis associated with the superficial addition of mineral material. This upbuilding process would have lowered the watertable (relatively to the ground level) and decreased the flooding frequency by the tides, favouring salinisation and solonisation processes at the hypersaline tidal flats. Furthermore, the still-existing hydromorphism would have promoted the maintenance of gleisation and sulfidisation. The presence of pyrite on the hyper-saline tidal flat soils further corroborates the formation of apicum soils from/over buried mangroves.

scholarly journals New record of Bembradium magnoculum (Actinopterygii: Scorpaeniformes: Plectrogeniidae) from the north-eastern Indian Ocean

2019 ◽  
Vol 49 (3) ◽  
pp. 269-274
Author(s):  
Aneesh KV ◽  
Sileesh M ◽  
RajeeshKumar MP ◽  
Bineesh KK ◽  
Hashim Manjebrayakath ◽  
...  
Keyword(s):  
Indian Ocean ◽  
New Record ◽  
Eastern Indian Ocean ◽  
The North ◽  
North Eastern

Taxonomic review of the genus Opaliopsis (Gastropoda: Nystiellidae) from Brazil, with description of a new species

2011 ◽  
Vol 91 (7) ◽  
pp. 1561-1566 ◽  
Author(s):  
Bruno Garcia Andrade ◽  
Paulo Márcio Santos Costa ◽  
Alexandre Dias Pimenta
Keyword(s):  
New Species ◽  
Deep Water ◽  
Brazilian Coast ◽  
Western Atlantic ◽  
The North ◽  
North Eastern ◽  
Deep Water Species ◽  
First Time ◽  
A New Species ◽  
Water Species

The genus Opaliopsis from Brazil is revised based on three deep-water species. Opaliopsis atlantis (Clench & Turner, 1952) is confirmed as occurring in north-eastern and south-eastern localities. Opaliopsis opalina (Dall, 1927) is reported for the first time in the south-western Atlantic. A new species, Opaliopsis cearense, is described from the north-eastern Brazilian coast, and is distinguished by its large number of fine spiral cords per teleoconch whorl.

Five new species of Arcidae from Brazil with description of new genus: Paranadara (Mollusca: Bivalvia)

2011 ◽  
Vol 92 (5) ◽  
pp. 1139-1150 ◽  
Author(s):  
Jonata de A. Francisco ◽  
José Carlos N. de Barros ◽  
Silvio Felipe B. de Lima
Keyword(s):  
New Record ◽  
New Genus ◽  
Shell Morphology ◽  
Brazilian Coast ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Western Atlantic ◽  
Eastern Brazil ◽  
North Eastern ◽  
Dorsal Area

New arcid species belonging to the genera Paranadara gen. nov., Acar and Asperarca (new record) are described for the western Atlantic Ocean based on shell morphology. Paranadara taludae sp. nov., Acar naturezae sp nov., Acar oliveirae sp. nov. and Asperarca tarcylae sp. nov. were collected off north-eastern Brazil between depths of 70 and 690 m, whereas Acar lepidoformis sp. nov. was dredged off the State of Rio Grande do Sul (southern Brazil) at a depth of 141 m. There are no species along the Brazilian coast that are morphologically similar to Paranadara taludae sp. nov. Acar naturezae sp. nov., Acar lepidoformis and Acar Acar oliveirae sp. nov. are similar to this genus due to shape, ligament, presence of concentric lamellae cut by radial threads, a broad dorsal area and a markedly narrowed anterior region in comparison to the posterior region, which is strongly expanded. Asperarca tarcylae sp. nov. is similar to this genus due to the presence of a small edentulous region below the umbo and smooth inner margin.

scholarly journals Pulmonicola cochleotrema (Digenea: Opisthotrematidae) in Antillean manatees (Trichechus manatus manatus) from the North-eastern region of Brazil

2016 ◽  
Vol 97 (8) ◽  
pp. 1581-1584 ◽  
Author(s):  
João Carlos Gomes Borges ◽  
Larissa Molinari Jung ◽  
Vitor Luz Carvalho ◽  
André Lucas De Oliveira Moreira ◽  
Fernanda Löffler Niemeyer Attademo ◽  
...  
Keyword(s):  
Clinical Signs ◽  
Eastern Coast ◽  
Brazilian Coast ◽  
Eastern Region ◽  
Conservation Areas ◽  
Trichechus Manatus ◽  
The North ◽  
North Eastern ◽  
In Captivity ◽  
Antillean Manatees

Currently, little is known about the helminth fauna in sirenian species. Therefore, the objective of this study was to assess the frequency of infection by Pulmonicola cochleotrema in Antillean manatees (Trichechus manatus manatus), in the North-eastern region of Brazil. Between the years of 1989 and 2014, 88 manatees found on the North-eastern Brazilian coast were clinically examined. They included animals that were found dead, animals maintained in captivity and specimens reintroduced into conservation areas. During their physical examination, helminths present in necropsied carcasses and in reintroduced animals were collected, as well as faecal samples. Parasites were detected in 7.95% (7/88) of the animals; all specimens collected being identified as P. cochleotrema. Only adult manatees were infected, and in two cases clinical signs were observed. This is the first report on the occurrence of P. cochleotrema in Antillean manatees in the states of Paraíba and Sergipe, in the North-eastern coast of Brazil.

scholarly journals New record of diamondback puffer Lagocephalus guentheri Miranda Ribeiro, 1915 from the North-Eastern Mediterranean, Turkey

2017 ◽  
Vol 2 (3) ◽  
pp. 67-73 ◽  
Author(s):  
Deniz Erguden ◽  
Ferhat Kabaklı ◽  
Ali Uyan ◽  
Servet Ahmet Doğdu ◽  
Serpil Karan ◽  
...  
Keyword(s):  
New Record ◽  
Eastern Mediterranean ◽  
The North ◽  
North Eastern
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