scholarly journals Synopsis of the knowledge on the Brazilian aplacophorans (Mollusca: Caudofoveata & Solenogastres)

2018 ◽  
Vol 19 (1) ◽  
Author(s):  
Flávio Dias Passos ◽  
Marcel Sabino Miranda ◽  
Paulo Vinicius Ferraz Corrêa

Abstract: Aplacophorans are well known as exclusively marine benthic molluscs with a vermiform body covered by aragonitic sclerites (also called spicules), whose species are widely distributed from the sublittoral down to the abyss. Currently, only nine species are known from Brazil (one Solenogastres and eight Caudofoveata), but these very few records are no longer a reflection of an existing low diversity. Sampling in deep waters has been conducted recently in oil-rich areas of the Brazilian coast, and the museum collections have now many aplacophoran lots. There is a need to learn about and/or install some microscopical facilities in Brazilian institutions, to form expertise for the investigations on these generally small animals. With studies on taxonomy, phylogeny, biogeography and ecology, important questions will be surely answered about the diversity, distribution, and the relationship among the deep-sea fauna from Brazil and from other places.

2015 ◽  
Vol 12 (21) ◽  
pp. 6453-6462 ◽  
Author(s):  
W. Etter ◽  
H. Hess

Abstract. The soundings in deep waters of Baffin Bay, together with the recovery of a basket star by John Ross in 1818, was a milestone in the history of deep-sea research. Although the alleged water depths of up to 1950 m were by far not reached, these were nevertheless the first soundings in deep bathyal (to perhaps uppermost abyssal) depths. Furthermore, the recovery of a benthic animal proved that animal life existed at great depths. Yet this was not the first published record of deep-sea fauna as it is often portrayed. This merit goes to accidental catches of the stalked crinoid Cenocrinus asterius that were recovered with fishing lines from upper bathyal environments near Antillean islands. In addition, the description of several deep-sea fishes considerably predated the John Ross episode.


Author(s):  
Débora De Oliveira Pires

Deep-sea coral reefs and coral habitats are hotspots of biodiversity and provide numerous resources for fishing, bioprospecting and science. The deep-water coral reefs and coral aggregates were first discovered in locations off the coast of Norway, in 1865. The increase of commercial operations in deep waters, and the use of advanced technology in offshore areas have revealed the true scale of deep-sea coral ecosystems of Europe, until then virtually unknown. From the 1990’s, there was a considerable increase in the number of important scientific contributions on deep-sea coral habitats. So, today is known that the occurrence of coral reefs is not restricted to shallow waters of tropical and subtropical regions and that there are deep-sea coral reefs spread out of the world, including Brazil. The goal of this study was to indicate the existence of potential areas of deep-sea coral reefs/habitats along the Brazilian coast, from records of occurrence of coral reef builders species (Lophelia pertusa, Madrepora oculata, Solenosmilia variabilis, Dendrophyllia alternata and Enallopsammia rostrata). The examination of the records/specimens demonstrated an extensive and almost continuous latitudinal distribution of the coral species along the Brazilian coast. Fishing is the main cause of impact to deep-sea coral reefs in several regions of the world. For more than a decade the deep demersal fishing has been held in Brazil and the extent of the impact caused by fishing nets, used by the boats close to the reefs, is unknown. The data presented here provide a contribution not only to the scientific community, but also to the decision makers regarding the uses of areas of the Brazilian shelf and slope, which represent reservoirs of rich marine biodiversity.


Zootaxa ◽  
2017 ◽  
Vol 4254 (4) ◽  
pp. 473 ◽  
Author(s):  
FLAVIO DE ALMEIDA ALVES-JÚNIOR ◽  
MARINA DE SÁ LEITÃO CÂMARA DE ARAÚJO ◽  
JESSER F. SOUZA-FILHO

This paper reports the occurrence of four deep waters shrimps of the family Solenoceridae in the southwestern Atlantic, Brazil. The rare Hadropenaeus modestus is collected for the second time from Brazilian waters after 138 years, filling the gaps on its distributional pattern. Mesopenaeus tropicalis is a new register for Potiguar basin, although it is common along Brazilian coast. Hymenopenaeus chacei and H. laevis are recorded for the first time in southwestern Atlantic. The records of these species in the southwestern Atlantic are an important advancement to raise the knowledge of the deep-sea shrimps. 


Zootaxa ◽  
2019 ◽  
Vol 4613 (3) ◽  
pp. 401
Author(s):  
FLAVIO DE ALMEIDA ALVES-JÚNIOR ◽  
ELINAI DOS SANTOS SILVA ◽  
MARINA DE SÁ LEITÃO CÂMARA DE ARAÚJO ◽  
IRENE CARDOSO ◽  
ARNAUD BERTRAND ◽  
...  

In this paper, we provide some available information about the occurrence and some taxonomic aspects of 19 species from the Superfamily Oplophoroidea in the southwestern Atlantic (Brazilian waters), with the update to 22 species of Oplophoroidea occurring in Brazilian waters. Samples were collected during two sets of surveys. The first was performed in 2009 and 2011 in the Potiguar Basin in northeast of Brazil (03–05°S; 38–35°W; between the States of Ceará and Rio Grande do Norte) under the framework of the project “Avaliação da biota bentônica e planctônica da Bacia Potiguar e Ceará (Bpot)”, with samples collected from bottom trawls in the continental slope at depth ranging from 150–2068 m. Second, under the in the framework of the ABRACOS (Acoustic along the Brazilian coast), performed in 2015 and 2017 on seamounts and offshore areas in Northeast Brazil (Ceará Chain, Rio Grande do Norte and Rocas Atoll, Fernando de Noronha Archipelago and Pernambuco State), with samples with pelagic micronekton and mesopelagic nets, in depths ranging from 50–1260 m. We highlight the occurrence of 14 species of the family Acanthephyridae and 5 species of the family Oplophoridae, including the first occurrences of five species to Brazilian deep waters: Acanthephyra kingsleyi Spence Bate, 1888, Ephyrina ombango Crosnier & Forest, 1973, Meningodora compsa (Chace, 1940), M. longisulca Kikuchi, 1985 and Systellapsis curvispina Crosnier, 1987. These records increase the knowledge on deep-sea shrimps occurring in Southwestern Atlantic. 


2015 ◽  
Vol 12 (11) ◽  
pp. 8883-8907
Author(s):  
W. Etter ◽  
H. Hess

Abstract. The soundings in deep waters of Baffin Bay, together with the recovery of a basket star by John Ross in 1818, was a milestone in the history of deep-sea research. Although the alleged water depths of up to 1950 m were by far not reached, these were nevertheless the first soundings in deep bathyal (to perhaps uppermost abyssal) depths. Furthermore, the recovery of a benthic animal proved that animal life existed at great depths. Yet this was not the first published record of deep-sea fauna as it is often portrayed. This merit goes to accidental catches of the stalked crinoid Cenocrinus asterius that were recovered with fishing lines from upper bathyal environments near Antillean islands. In addition, the description of several deep-sea fishes considerably predated the John Ross episode.


PLoS ONE ◽  
2012 ◽  
Vol 7 (10) ◽  
pp. e46913 ◽  
Author(s):  
Ben Thuy ◽  
Andy S. Gale ◽  
Andreas Kroh ◽  
Michal Kucera ◽  
Lea D. Numberger-Thuy ◽  
...  
Keyword(s):  
Deep Sea ◽  

1972 ◽  
Vol 21 (0) ◽  
pp. 01-13 ◽  
Author(s):  
Pierre Ch. Montouchet

A consultation of the original descriptions of the genera of Scissurellidae led the author to conclude that the valid names for the genera of this family are: Scissurella d'Orbigny, 1823 (redescription by Sowerby, 1824), Anatoma Woodward, 1859, Inoisura Hedley, 1904, Scissurona Iredale, 1924, Sinezona Finlay, 1927. Scissurella and Anatoma are cosmopolites, the first generally living in shallow waters, associated to sea-weeds, while the second is found in deep waters. The three last genera are restricted to Australasia. Three new species are described from the Brazilian coast: Soissu rella alexandrei, Scissurella eleotilis and Scissurella morretesi. The internal anatomy of S. alexandrei is described. These three new species have been found in littoral shallow waters, the two first on the northeast Brazilian coast, the third on the coast of the State of São Paulo. The fourth known species of Scissurellidae from Brazil, Anatoma aedonia (Watson, 1886), was dredged by H.M.S, "Challenger", in 1873, off Pernambuco, 350 fm (640 m).


2020 ◽  
Author(s):  
Ralf ◽  
G. David Johnson ◽  
Kevin Conway

Mouthbrooding or oral incubation, the retention of early developmental stages inside of the mouth for an extended period of time, has evolved multiple times in bony fishes1,2. Though uncommon, this form of parental care has been documented and well-studied in several groups of freshwater fishes but is also known to occur in a small number of marine fishes, all inhabiting coastal waters1,2. A recent paper3, reported for the first time mouthbrooding in a deep-water fish species, the zeiform Parazen pacificus, which according to the authors “fills in a gap in the larval literature for this family of fishes and prompts further investigation into other novel reproductive modes of deep-sea fauna.”


2018 ◽  
Vol 3 (4) ◽  
pp. 170 ◽  
Author(s):  
Oskar Habjanič ◽  
Verena Perko

The article deals with the relationship between the local community, museum collections, collective memory and the cultural landscape. The ICOM Code of Museum Ethics defines a museum collection as a cultural and natural heritage of the communities from which they have been derived. The collections, especially in regional museums, are inextricably linked to the community. The cultural landscape can be read also as a bridge between the society and natural environment. The cultural landscape is vitally connected with a national, regional, local, ethnic, religious or political identity. Furthermore, the cultural landscape is a reflection of the community's activities. Therefore, private collections are the foundation of the collective memory and empower museums for important social tasks. They offer an opportunity for multilayered interpretation of the past and give a possibility for museums to work on the inclusion of vulnerable groups. The collections could be a mediator and unique tool for recovering of the “broken” memory. In this way certain tragic past events, ignored or only bigotedly mentioned by history, can be re-evaluated.


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