First Record ofStreptocara formosensis(Nematoda: Acuariidae) from the Chubut Steamerduck,Tachyeres leucocephalus, Endemic to the Patagonian Coast, Southwest Atlantic

2013 ◽  
Vol 80 (2) ◽  
pp. 304-307 ◽  
Author(s):  
María Laura Agüero ◽  
Julia Inés Diaz
Keyword(s):  
First Record ◽  
Southwest Atlantic ◽  
Patagonian Coast

Diseases and parasites of wild and cultivated mussels along the Patagonian coast of Argentina, southwest Atlantic Ocean

2020 ◽  
Vol 139 ◽  
pp. 139-152
Author(s):  
N Vázquez ◽  
A Frizzera ◽  
F Cremonte
Keyword(s):  
Inflammatory Responses ◽  
Geographical Area ◽  
Infection Intensity ◽  
Southwest Atlantic ◽  
Pathological Conditions ◽  
Habitat Factors ◽  
Pathogen Prevalence ◽  
Patagonian Coast ◽  
Ecological Habitat ◽  
Cultivated Populations

A histological survey of the commercially edible mussels Mytilus platensis and M. chilensis from wild and cultivated populations along the coast of Patagonia, Argentina (42°00’ to 54°47’S), was carried out to determine their health status. Diagnostic results included 3 types of inflammatory responses (infiltrative, nodular, and encapsulation), disseminated neoplasia disease, 2 abnormal reproductive conditions (gonadal atresia and intersex), prokaryotic inclusions, protozoans, and metazoans. Pathogen prevalence and infection intensity among mussels of different sampling sites and between those of wild and cultivated populations were compared. Inflammatory responses were recorded in all mussels from all sites, while disseminated neoplasia only occurred in the most southern cultivated M. chilensis. Intracellular prokaryotic inclusions were broadly distributed in the mussels from both northern and southern Patagonian coasts. Ciliates showed the highest prevalence among wild mussels from the colder waters of Bahía Brown. Turbellaria were recorded at higher prevalence in cultured mussels (41.7%), and trematode metacercariae occurred exclusively in intertidal wild mussels. None of the parasites found appears to be a problem to the fishery or farming, although disseminated neoplasia should be monitored. In addition, we found that mytilid species coexisting with M. platensis (Aulacomya atra and Perumytilus purpuratus) at one location shared the same pathological conditions and parasites, which differed from those of M. platensis at a distant locality. These results suggest that pathological conditions and parasites were influenced more by ecological habitat factors than by the species of mussels present, based on similar parasite assemblages found among closely related mytilid hosts in the same geographical area.

A proposed three-host life history of Monascusfiliformis (Rudolphi, 1819) (Digenea: Fellodi-stomidae) in the southwest Atlantic Ocean

1998 ◽  
Vol 76 (6) ◽  
pp. 1198-1203 ◽  
Author(s):  
SR Martorelli ◽  
F Cremonte
Keyword(s):  
Life Cycle ◽  
Atlantic Ocean ◽  
General Pattern ◽  
First Record ◽  
Final Host ◽  
Full Description ◽  
Intermediate Hosts ◽  
Southwest Atlantic ◽  
Experimental Scheme ◽  
The North

This is the first record of cercariae of Monascus filiformis (Rudolphi, 1819) and of Chaetognatha as a secondintermediate host in the southwest Atlantic Ocean. The morphology of the sporocyst and cercaria from Nucula obliqua (Bivalvia:Nuculidae) and a full description of the metacercaria from hydromedusae are given. The life cycle of M. filiformis involves threehosts. The bivalve N. obliqua is the first intermediate host, Chaetognatha and medusae are the second intermediate hosts, and thejurel Trachurus lathami (Pisces: Carangidae) is the final host. The life cycle of M. filiformis occurs in shallow waters in theArgentine Sea and differs from Køie’s experimental scheme for the North Sea in the addition of planktonic invertebrates assecond intermediate hosts. The life cycle proposed here follows the general pattern given for the family Fellodistomidae.

The genus Trischizostoma (Crustacea: Amphipoda: Trischizostomidae) from the Southwest Atlantic, collected by the REVIZEE Program

Zootaxa ◽  
2004 ◽  
Vol 645 (1) ◽  
pp. 1 ◽  
Author(s):  
PABLO R. FREIRE ◽  
CRISTIANA S. SEREJO
Keyword(s):  
First Record ◽  
Southwestern Atlantic ◽  
Southwest Atlantic ◽  
World Distribution

Based on material collected by the REVIZEE Program along the Brazilian coastline between latitudes 11 to 22 S, five species of Trischizostoma were recorded, four are known species and are herein redescribed: T. denticulatum Ledoyer, 1978, T. longirostrum Chevreux, 1919, T. raschi Boeck, 1861, T. richeri Lowry & Stoddart, 1994, and one species is new, Trischizostoma costai sp. nov. Despite the wide world distribution of the genus, this is the first record of Trischizostoma from the southwestern Atlantic.

First record of the genus Pisinna Monterosato, 1878 (Mollusca, Gastropoda, Anabathridae) from the southwest Atlantic, with description of a new species

Zootaxa ◽  
2004 ◽  
Vol 723 (1) ◽  
pp. 1
Author(s):  
FRANKLIN NOEL SANTOS ◽  
RICARDO SILVA ABSALÃO
Keyword(s):  
New Species ◽  
Continental Shelf ◽  
First Record ◽  
Brazilian Coast ◽  
Southwest Atlantic ◽  
First Time ◽  
A New Species ◽  
Spiral Bands

The genus Pisinna Monterosato, 1878 (Anabathridae Ponder, 1988) is reported from the Brazilian coast for the first time. Pisinna bicincta n. sp. is found off Esp rito Santo State (65 67 m depth) on the Brazilian continental shelf. It is diagnosed by its pupiform shell, with subsutural depression, two spiral bands (one white and one orange), dome-shaped paucispiral protoconch sculptured with about 17 spiral rows of minute flat pits, teleoconch with about 22 oblique axial cordlets, and aperture with columellar tooth.

First record of Latris lineata (Forster, 1801) in the Southwest Atlantic Ocean

Zootaxa ◽  
2013 ◽  
Vol 3646 (1) ◽  
pp. 097 ◽  
Author(s):  
JUAN A. WAESSLE ◽  
ANDRÉS C. MILESSI
Keyword(s):  
Atlantic Ocean ◽  
First Record ◽  
Southwest Atlantic ◽  
Latris Lineata

scholarly journals Record of the non-indigenous species Sternaspis aff. nana Zhadan, Tzetlin & Salazar-Vallejo, 2017 (Annelida: Sternaspidae) in the Southwest Atlantic Ocean

2021 ◽  
Vol 61 ◽  
pp. e20216111
Author(s):  
Nykon Craveiro ◽  
José Souto Rosa Filho
Keyword(s):  
Atlantic Ocean ◽  
Conservation Status ◽  
Marine Species ◽  
First Record ◽  
Indigenous Species ◽  
Asian Countries ◽  
Southwest Atlantic ◽  
Ship Hulls ◽  
Non Indigenous Species ◽  
New Habitats

The introduction of non-indigenous marine species in new habitats is generally associated with ships arriving at ports, driven by species transported in ballast water and sediment and biofouling communities on ship hulls, drifting object and underwater surfaces in dock areas. The present paper reports the record of the specie Sternaspis aff. nana in the Atlantic Ocean, discussing its possible conservation status and method of arrival to Brazil. Sediments samples were collected in the external area (11 m depth) of the Suape Harbor (Brazil) in February 2018. Two individuals of Sternaspis aff. nana were recorded, representing the first record of this species in the Southwest Atlantic Ocean. The way S. aff. nana arrived in Brazilian waters cannot be easily determined, the short-lived lecithotrophic larvae of sternaspids suggest that the specimens found in Suape have arrived in ballast sediment. An increase in trade between Brazil and Asian countries since the 2000s has led to that more ships coming from China having arrived in Brazilian harbors. The arrival of S. aff. nana, originally described in the South China Sea, in the Suape harbor area may have resulted from this intense movement of ships between China and Brazil.

scholarly journals Tunicata, Thaliacea, Pyrosomatidae, Pyrosomella verticillata (Neumann, 1909): first record from the southwest Atlantic Ocean

Check List ◽  
2008 ◽  
Vol 4 (3) ◽  
pp. 272 ◽  
Author(s):  
Pedro Freitas de Carvalho ◽  
Sérgio Luiz Costa Bonecker
Keyword(s):  
Atlantic Ocean ◽  
First Record ◽  
Southwest Atlantic

None

Two new species of Nicomache (Polychaeta: Maldanidae) from the Southwest Atlantic

Zootaxa ◽  
2007 ◽  
Vol 1454 (1) ◽  
pp. 27-37 ◽  
Author(s):  
JOSÉ ERIBERTO DE ASSIS ◽  
CARMEN ALONSO SAMIGUEL ◽  
MARTIN LINDSEY CHRISTOFFERSEN
Keyword(s):  
New Species ◽  
First Record ◽  
Entire Body ◽  
Southwest Atlantic ◽  
Two New Species ◽  
Anterior Angle

Two new maldanid polychaetes were collected from the Ponta do Cabo Branco beach, Paraíba, Brazil, and represent the first record of the genus Nicomache for the southwest Atlantic. Nicomache (Nicomache) lanai sp. nov. has 22 setigerous segments, two pre-anal asetigerous segments, a dark beige colour on setigers 4–17, an anteriorly rounded prostomium forming a tall, arched keel, elliptical nuchal grooves that open posteriorly, 4–7 acicular spines on setigers 1–3, and an anal funnel with triangular equal-sized anal cirri, with concave sides. Nicomache (Nicomache) brasiliensis sp. nov. also has 22 setigerous and two pre-anal asetigerous segments, but the entire body is light-pink coloured. The prostomium is rounded anteriorly, but is longer, broadening posteriorly, forming a low, straight subterminal keel. This species has parallel nuchal grooves, with a sharp anterior angle, has only 4–6 acicular spines on setigers 1–3, and an anal funnel with short tapering, equal-sized anal cirri with convex sides.

scholarly journals Diet and feeding behavior of Kyphosus spp. (Kyphosidae) in a Brazilian subtropical reef

2006 ◽  
Vol 49 (4) ◽  
pp. 623-629 ◽  
Author(s):  
Renato Azevedo Matias Silvano ◽  
Arthur Ziggiatti Güth
Keyword(s):  
Atlantic Ocean ◽  
Feeding Behavior ◽  
Water Column ◽  
First Record ◽  
Calanoid Copepods ◽  
Southwest Atlantic ◽  
Substrate Use

The present study analyzed and compared diet and feeding behavior (substrate use, position in water column, interactions with other fishes) of Kyphosus spp. (sea chubs) in a Brazilian subtropical reef. Juveniles (< 160 mm) of Kyphosus incisor consumed both algae and invertebrates, which were mainly calanoid copepods. Juvenile and small adults of also observed foraging in the water column. We thus provide the first record of omnivory for Kyphosids in the southwest Atlantic Ocean.

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