scholarly journals Sporolithon franciscanum sp. nov. (Sporolithales, Rhodophyta), a New Rhodolith-Forming Species from Northeast Brazil

Diversity ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 199 ◽  
Author(s):  
Luis Alfredo S. Leão ◽  
Ricardo G. Bahia ◽  
Michel B. Jesionek ◽  
Walter H. Adey ◽  
Gabriel Johnson ◽  
...  
Keyword(s):  
New Species ◽  
Dna Sequences ◽  
Drainage Basin ◽  
River Mouth ◽  
Coralline Algae ◽  
Northeast Brazil ◽  
Anatomical Features ◽  
Sao Francisco River ◽  
São Francisco River ◽  
The World

This paper describes Sporolithon franciscanum, a new rhodolith-forming species of non-geniculate coralline algae found at depths between 47–52 m near the São Francisco river mouth, the second largest and the most extensive drainage basin in Brazil, and also at the Abrolhos Bank, in the world´s largest rhodolith beds. DNA sequences from plastidial psbA and rbcL markers indicate that the species is unique compared to all other Sporolithon species that have thus far been sequenced. Since morpho-anatomical features of the new species are shared with some other Sporolithon species, its identification was only confirmed by DNA sequences.

São Francisco River mouth: Bedforms characterization associated to flow conditions

2017 ◽  
Author(s):  
Diego D'Avila Beserra ◽  
Andre Giskard Aquino da Silva ◽  
Werner Farkatt Tabosa ◽  
Helenice Vital ◽  
Karl Statteger
Keyword(s):  
River Mouth ◽  
Flow Conditions ◽  
Sao Francisco River ◽  
São Francisco River

Marilia caramuru sp. nov. and Marilia paraguassu sp. nov. (Trichoptera: Odontoceridae), two new species from Maranhão State, Northeast Brazil

Zootaxa ◽  
2018 ◽  
Vol 4425 (2) ◽  
pp. 393
Author(s):  
ISABELA C. ROCHA ◽  
WAGNER RAFAEL M. SOUZA
Keyword(s):  
New Species ◽  
Species Diversity ◽  
Rio De Janeiro ◽  
Wing Venation ◽  
Northeast Brazil ◽  
World Species ◽  
Northeast Region ◽  
The World ◽  
Two New Species ◽  
Great Knowledge

Although the world species diversity of Marilia Müller 1880 is not great, knowledge about this group may be underestimated, since several areas are poorly studied, especially in Northeast Region, Brazil. Two new species are described and illustrated here based on specimens collected in Maranhão State, from which the genus has not been reported previously. Despite the similarity of Marilia caramuru sp. nov. with M. elongata Martynov 1912, differences between them are observed especially in segment X and preanal appendages, in addition to details of wing venation. The unique set of spiniform projections on endotheca, and the wrinkled prominence on sternum VIII distinguish Marilia paraguassu sp. nov. from all other species in the genus. The material examined has been deposited in the Coleção Entomológica Professor José Alfredo Pinheiro Dutra, UFRJ, Rio de Janeiro, Brazil, and in the Coleção Zoológica do Maranhão, UEMA, Maranhão, Brazil. 

scholarly journals Sediment input from the São Francisco River bank, Northeast Brazil, under low discharge period

2021 ◽  
Author(s):  
Francisco Sandro Rodrigues Holanda ◽  
Maria Hosana dos Santos ◽  
Janisson Batista de Jesus ◽  
Wadson De Menezes Santos ◽  
Edinaldo De Oliveira Alves Sena ◽  
...  
Keyword(s):  
Suspended Sediment ◽  
River Discharge ◽  
River Channel ◽  
Sediment Supply ◽  
Northeast Brazil ◽  
Sao Francisco River ◽  
Soil Bioengineering ◽  
São Francisco River ◽  
Sediment Input ◽  
Bioengineering Techniques

The objective of this study was to evaluate the input of suspended sediment from the slope toe in the São Francisco River channel, in Northeast Brazil, under different soil bioengineering techniques. Sediments were collected in the years of 2013, 2014 and 2015, in five transects crossing the river channel. Sediment input in the sampling points was higher in the year of 2013, i.e., the year of the highest river discharge. Sediment supply to the river channel for a period of 3 years (2013, 2014 and 2015), was evaluated at 20, 40 and 60% depth, along five different transects (P1= riverbank, P2= beginning of the thalweg, P3= middle of the thalweg, P4= end of the thalweg, and P5 = margin of the side sandybar), oriented by the presence or absence of erosion control techniques (treatments) such as: 1-Natural Vegetated Slope; 2-Vegetated Riprap; 3-Eroded Slope; 4-Live Cribwall and 5-Vetiver grass Contour Line. Sediments input was different in all evaluated transects, and the one identified as Eroded Slope at 20% depth presented the lowest amount of suspended sediment load. There was a decrease in the total amount of suspended sediment in the evaluated periods, probably due to the progressive decrease in the river discharge, and the protection provided by the soil bioengineering techniques.

scholarly journals A taxonomic revision of Australian Conopidae (Insecta: Diptera)

Zootaxa ◽  
2010 ◽  
Vol 2581 (1) ◽  
pp. 1 ◽  
Author(s):  
MARGARET A SCHNEIDER
Keyword(s):  
New Species ◽  
Taxonomic Revision ◽  
The Other ◽  
New Combinations ◽  
Anatomical Features ◽  
Representative Species ◽  
The World ◽  
High Degree ◽  
World Fauna ◽  
Female Genital

A taxonomic revision of the Australian Conopidae is presented. Nineteen genera in four subfamilies are recognised. The Stylogasterinae are represented by the cosmopolitan genus Stylogaster Macquart and the Myopinae by Myopa Fabricius and Thecophora Rondani. A monotypic genus, Notoconops gen. nov., is described and placed in a new subfamily, Notoconopinae. The remaining fifteen Australian genera are assigned to the Conopinae. Australoconops Camras, Chrysidiomyia Kröber, Conops Linnaeus, Delkeskampomyia Kröber, Heteroconops Kröber, Microconops Kröber, Neoconops Kröber, Pleurocerina Macquart, Physocephala Schiner, Smartiomyia Kröber and Stenoconops Kröber are redescribed. Four new conopine genera are described: Atrichoparia; Camrasiconops; Setosiconops; and Tanyconops, with the following resultant new combinations: Atrichoparia curticornis (Kröber) (from Heteroconops); Camrasiconops ater (Camras) and Ca. rufofemoris (Camras) (from Microconops); and Setosiconops robustus (Kröber) (from Neoconops). Callosiconops Kröber and Paraconops Kröber are regarded as junior synonyms of Chrysidiomyia and Pleurocerina respectively with the following resultant new combinations: Chrysidiomyia hirsuta (Kröber), Pleurocerina aristalis (Camras), P. longicornis (Kröber), P. nigrifacies (Kröber), P. similis (Kröber), P. turneri (Camras). A total of 100 species of Australian Conopidae are now recognised. No new species of Myopinae or Stylogasterinae are described. Representative species only of Atrichoparia, Camrasiconops, Heteroconops and Microconops are described. All species of the other 12 genera are described or redescribed. These include the following 45 new species,: Australoconops aglaos, A. aurantius, A. balteus, A. breviplatus, A. brunneus, A. camrasi, A. cantrelli, A. elegans, A. fulvitarsus, A. furvus, A. nebrias, A. neuter, A. pallorivittus, A. phaeomeros, A. ruficrus, A. vespoides; Chrysidiomyia rugifrons, C. setosa; Conops aureolus, C. badius, C. chvalai, C. sparsus; Heteroconops carnarvonensis; Neoconops brevistylus, N. glaber; Notoconops alexanderi, Pleurocerina aquila, P. brevis, P. chrysopyga, P. lamellata, P. lutea,P. luteiceps, P. occidua, P. saxatilis, P. scutellata, P. vespiformis; Setosiconops epixanthus, Se. similis, Smartiomyia arena, Sm. cerina, Sm. danielsi, Sm. macalpinei; Tanyconops longicaudus, T. luteus, T. ocellatus. Australoconops ocellatus (de Meijere) comb. nov. is resurrected from synonymy with A. aurosus (Newman). Conops demeijerei Kröber is considered a junior synonym of C. seminiger de Meijere. A lectotype and paralectotypes are designated for Microconops fasciatus Kröber. Anatomical features used in descriptions are discussed and illustrated. Special attention has been given to the ultrastructure of spicules on female genital structures. These spicules show differences between genera and species. The high degree of endemism of the Australian fauna is discussed in relation to the world fauna and some preliminary thoughts on phylogenetic relationships are presented. A catalogue of the Australian Conopidae is included as an Appendix.

O RECIFE E O CENTENáRIO DE DELMIRO GOUVEIA EM PERNAMBUCO (1963)

2013 ◽  
Vol 10 (16) ◽  
Author(s):  
DILTON Cá‚NDIDO SANTOS MAYNARD
Keyword(s):  
Foreign Capital ◽  
Social Research ◽  
Northeast Brazil ◽  
Sao Francisco River ◽  
São Francisco River ◽  
Hydropower Potential ◽  
National Hero ◽  
Brazilian History ◽  
The City

Resumo: O artigo analisa as comemorações do centenário de Delmiro Gouveia, ocorridas em 1963. Considerado um mártir na luta contra brasileira o capital estrangeiro, o empreendedor pioneiro no aproveitamento do potencial hidrelétrico do rio São Francisco e o modernizador dos sertões alagoanos, Delmiro foi retomado como um á­cone nacionalista num contexto em que se discutiam os rumos para o desenvolvimento do Nordeste. As comemorações do seu centenário de nascimento, ocorridas em Pernambuco, envolveram esforços para atribuir ao ”coronel dos coronéis” o epá­teto de pioneiro na redenção regional. As diversas atividades constituintes destas celebrações revelam um embate não só pela confecção da memória do homenageado, bem como uma tensão entre transformá-lo em um herói nacional e utilizar a sua biografia para acentuar as particularidades do povo nordestino. Neste texto, o alvo das atenções é a ”Semana Delmiro Gouveia” (SDG), organizada pelo Instituto Joaquim Nabuco de Pesquisas Sociais (IJNPS), localizado no Recife, Pernambuco. Ali estiveram reunidos alguns dos principais estudiosos de Gouveia que, sob a coordenação de Gilberto Freyre e Mauro Mota, apresentaram as suas interpretações sobre a vida e a obra do ”Coronel dos Coronéis”. Palavras-chave: Delmiro Gouveia, Comemoração, Nordeste Brasileiro.  THE CITY OF RECIFE AND THE DELMIRO GOUVEIA CENTENARY IN PERNAMBUCO (1963)Abstract: This article analyzes the centenary celebrations of Delmiro Gouveia, occurred in 1963. Considered a martyr in the fight against Brazilian foreign capital, the pioneering entrepreneur in harnessing the hydropower potential of São Francisco River and the modernizing of Alagoas backwoods, Delmiro was included as a nationalist icon in a context in which they discussed the directions for the Northeast development. The celebrations of his centenary birth, occurred in Pernambuco, had involved efforts to give him the epithet pioneer in regional redemption. The various constituent activities of these celebrations reveal a clash not only by creation of the honoree's memory as well as a tension between turn it into a national hero and use his biography to emphasize the particularities of the northeastern people. This paper is mostly about the "Delmiro's Gouveia Week", organized by the Institute for Social Research Joaquim Nabuco, located in Recife, State of Pernambuco. In this place gathered some of the leading scholars of Gouveia, who, under the coordination of Gilberto Freyre and Mauro Mota, presented their interpretations of the life and work of biggest colonel in Brazilian history. Keywords: Delmiro Gouveia , Celebration, Northeast Brazil.  

Gamidactylus piranhus sp. nov. (Copepoda, Vaigamidae) from the nasal fossae of serrasalmid fishes from the Três Marias Reservoir, Upper São Francisco River, Minas Gerais State, Brazil

2008 ◽  
Vol 53 (3) ◽  
Author(s):  
Vernon Thatcher ◽  
Michelle Santos ◽  
Marilia Brasil-Sato
Keyword(s):  
New Species ◽  
San Francisco ◽  
Type Species ◽  
Antennal Segment ◽  
Minas Gerais ◽  
Sao Francisco River ◽  
São Francisco River ◽  
Minas Gerais State ◽  
Simple Seta ◽  
Três Marias Reservoir

AbstractGamidactylus piranhus sp. nov. (Copepoda, Vaigamidae) from the nasal fossae of “San Francisco piranha”, Pygocentrus piraya (Cuvier, 1819) and.White piranha. Serrasalmus brandtii (Lütken, 1875) is described. The new species is similar to the type species of the genus, Gamidactylus jaraquensis Thatcher et Boeger, 1984, but differs from it in the following respects: the cephalothorax is shorter, the free thoracic segments are usually longer, leg 5 is reduced to a simple seta and a spine on the second antennal segment is lacking. Gamidactylus bryconis Varella, 1995 and Gamidactylus hoplius Varella et Malta, 1996, do not closely resemble the new species because they are much larger and both present leg 5 reduced to a double seta.

scholarly journals Integrative description of Diosaccus koreanus sp. nov. (Hexanauplia, Harpacticoida, Miraciidae) and integrative information on further Korean species

ZooKeys ◽  
2020 ◽  
Vol 927 ◽  
pp. 1-35
Author(s):  
Byung-Jin Lim ◽  
Hyun Woo Bang ◽  
Heejin Moon ◽  
Jinwook Back
Keyword(s):  
New Species ◽  
Dna Sequences ◽  
Anterior Extremity ◽  
Species Level ◽  
Sequence Difference ◽  
Mitochondrial Coi ◽  
Korean Waters ◽  
The World ◽  
Sequence Characteristics ◽  
A New Species

A new species of Diosaccus Boeck, 1873 (Arthropoda, Hexanauplia, Harpacticoida) was recently discovered in Korean waters. The species was previously recognized as D. ezoensis Itô, 1974 in Korea but, here, is described as a new species, D. koreanussp. nov., based on the following features: 1) second inner seta on exopod of fifth thoracopod apparently longest in female, 2) outer margin of distal endopodal segment of second thoracopod ornamented with long setules in male, 3) caudal seta VII located halfway from base of rami (vs. on anterior extremity in D. ezoensis), and 4) sixth thoracopod with three setae in female (vs. 2 setae in D. ezoensis). In addition, there is also a mitochondrial COI sequence difference of more than 19.93% with D. ezoensis registered in NCBI. A key to Diosaccus species of the world is also provided, and new morphological features and DNA sequences are presented for two other harpacticoid species, Parathalestris verrucosa Itô, 1970 and Peltidium quinquesetosum Song & Yun, 1999. In order to clearly identify harpacticoids at the species level, both morphological and DNA sequence characteristics should be considered.

Brasergasilus bifurcatus sp. nov. (Copepoda, Ergasilidae, Abergasilinae) from the gills and nasal fossae of serrasalmid fishes from the Três Marias Reservoir, Upper São Francisco River, Minas Gerais State, Brazil

2007 ◽  
Vol 52 (3) ◽  
Author(s):  
Michelle Santos ◽  
Vernon Thatcher ◽  
Marilia Brasil-Sato
Keyword(s):  
New Species ◽  
Distal Segment ◽  
Minas Gerais ◽  
Terminal Segment ◽  
Sao Francisco River ◽  
Genital Complex ◽  
São Francisco River ◽  
Minas Gerais State ◽  
Três Marias Reservoir

AbstractBrasergasilus bifurcatus sp. nov. (Copepoda, Ergasilidae, Abergasilinae) is described. Specimens of the new species were collected from the gills and nasal fossae of the serrasalmid fishes, known as “piranhas”, Pygocentrus piraya (Cuvier, 1819) and “pirambebas”, Serrasalmus brandtii (Lütken, 1875). The fishes were netted in the Três Marias Reservoir (18°12′59″S, 45°17′34″W) of the upper São Francisco River, Minas Gerais State, Brazil. The new species differs from its congeners by the following characters: the specific setation on the antennule; the terminal barb of the antenna; the deeply bifurcate distal segment of the mandible; the chalice-shaped genital complex; a conspicuous external indentation of the second segment of the first endopod and a very short terminal segment of the first exopod.

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