A survey of larval digeneans in the commonest intertidal snails from Northern Patagonian coast, Argentina

AbstractOver a two-years period, a survey was carried out in order to increase the knowledge of digeneans parasitising the commonest intertidal gastropods on the Patagonian coast, Southwestern Atlantic Ocean. A total of 4,725 gastropods were examined. Six species of digenean parasitising four snail species were found; four of them were registered for first time: Maritrema sp. 1 (Microphallidae) in Crepidula dilatata (Calyptraeidae), Parorchis sp. (Philophtalmidae) and sporocyst of Renicolidae in Trophon geversianus (Muricidae), and Diphterostomum sp. (Zoogonidae) in Buccinanops globulosus (Nassariidae). Two other species were found in Siphonaria lessoni (Siphonariidae): Maritrema sp. 2 and Hemiuridae. One snail species, Tegula patagonica (Trochidae) was not parasitised. These gastropods act as first intermediate host, and C. dilatata, S. lessoni and B. globulosus also frequently host metacercariae within the sporocyst. Overall prevalences varied from 0.16% of Diphterostomum in the intertidal population of B. globulosus to 33.45% of Maritrema sp. 1 in C. dilatata.

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Remarks on the morphology and distribution of some rare centric diatoms in southern Brazilian continental shelf and slope waters

Brazilian Journal of Oceanography ◽

10.1590/s1679-87592012000400002 ◽

2012 ◽

Vol 60 (4) ◽

pp. 415-427 ◽

Cited By ~ 3

Author(s):

Marinês Garcia ◽

Clarisse Odebrecht

Keyword(s):

Atlantic Ocean ◽

Continental Shelf ◽

Southwestern Atlantic ◽

Patos Lagoon ◽

La Plata ◽

Centric Diatoms ◽

Southwestern Atlantic Ocean ◽

The Family ◽

Scanning Electron Microcopy ◽

First Time

This paper provides information on the morphology and occurrence of extant diatoms of the family Asterolampraceae and Azpeitia species of the southernmost Brazilian continental shelf and slope waters in the Southwestern Atlantic Ocean (28 -34ºS), under the influence of Tropical, Subtropical, Subantarctic Waters, terrestrial discharges from La Plata River and Lagoa dos Patos lagoon. Plankton was sampled (20 µm net; vertical hauls) at the same 27 stations in winter 2005 and summer 2007. Among Asterolampraceae, Asteromphalus flabellatus was the most frequent species (57% of samples) observed mainly in winter samples (92%) in Subtropical Shelf Water but also under the influence of La Plata River plume (salinity <35). Lower frequencies were observed for Asterolampra marylandica, Asteromphalus elegans, Asteromphalus heptactis and Spatangidium arachne. Four species of Azpeitia were observed: A. barronii and A. neocrenulata for the first time in the South Atlantic Ocean while A. africana and A. nodulifer had already been registered in equatorial and southern areas of Brazil. All Azpeitia species were rare (19%) in offshore samples (100-200 m depth. Remarks on the morphology based on light and scanning electron microcopy observations are provided along with their distribution in the study area.

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Morphology and distribution of two epizoic diatoms (Bacillariophyta) in Brazil

Acta Botanica Brasilica ◽

10.1590/s0102-33062012000400012 ◽

2012 ◽

Vol 26 (4) ◽

pp. 836-841 ◽

Cited By ~ 6

Author(s):

Luciano Felício Fernandes ◽

Mariana Calixto-Feres

Keyword(s):

Atlantic Ocean ◽

Body Surface ◽

Range Limits ◽

Brazilian Coast ◽

Entire Body ◽

Southwestern Atlantic ◽

Southwestern Atlantic Ocean ◽

Electron Microscopes ◽

First Time ◽

Euterpina Acutifrons

The epizoic diatoms Pseudohimantidium pacificum and Falcula hyalina, which live on copepods, were investigated using light and electron microscopes, based on material gathered from different marine environments along the Brazilian coast. Pseudohimantidium pacificum is reported for the first time for the Southwestern Atlantic Ocean, significantly enlarging its range of geographic distribution. This species usually covers the entire body surface of the copepods Corycaeus amazonicus and Euterpina acutifrons, and of cypris larvae of Cirripedia. Falcula hyalina uses a higher number of copepod hosts, particularly Oithona oswaldocruzii, Pseudodiaptomus richardii and Acartia spp. The valve morphology and biometrical data of both diatoms were within the range limits recorded in the literature, including the original publications. Both species occurred in all the sampling stations along the Brazilian coastline stretching from 12°S down to 28°S. Falcula hyalina had already been found as far as latitude 31°S in the Southwestern Atlantic Ocean.

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New discoveries for the subfamily Phtisicinae Vassilenko, 1968 (Crustacea: Senticaudata) from the Brazilian coast

European Journal of Taxonomy ◽

10.5852/ejt.2020.597 ◽

2020 ◽

Author(s):

Fábio da Motta Mauro ◽

Priscila Soares do Nascimento ◽

Cristiana Silveira Serejo

Keyword(s):

Atlantic Ocean ◽

Original Description ◽

Brazilian Coast ◽

Southwestern Atlantic ◽

Espírito Santo ◽

Campos Basin ◽

Southwestern Atlantic Ocean ◽

The Caribbean ◽

Espirito Santo ◽

First Time

Amphipod material collected from Brazil on Ilha do Arvoredo, (Santa Catarina), Campos Basin, (Rio de Janeiro) and Espírito Santo Basin (Espírito Santo) in the southwestern Atlantic Ocean yielded new taxonomic findings for the subfamily Phtisicinae Vassilenko, 1968. Hemiproto wigleyi McCain, 1968, previously recorded from the Gulf of Mexico to the Caribbean Sea, is herein redescribed and recorded for the first time from the Brazilian coast. The type material of Phtisica verae Quitete, 1979, a poorly described species recorded from Brazil and based only on its original description, was examined and considered herein as a junior synonym of P. marina Slabber, 1769, a well-known and widely distributed species from the Atlantic Ocean and the Mediterranean Sea. In this paper, Phtisica marina is redescribed, with its two morphotypes of male gnathopod two, and compared with previous descriptions. The geographic distribution of both H. wigleyi and P. marina is provided.

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Monorchiid and aporocotylid cercariae (Digenea) parasitising the purple clam Amiantis purpurata (Bivalvia, Veneridae) from the Southwestern Atlantic coast

Acta Parasitologica ◽

10.2478/s11686-011-0074-2 ◽

2011 ◽

Vol 56 (4) ◽

Cited By ~ 7

Author(s):

Carmen Gilardoni ◽

Guadalupe Posadas ◽

Marina Kroeck ◽

Florencia Cremonte

Keyword(s):

Atlantic Ocean ◽

Southern Hemisphere ◽

Digestive Gland ◽

Atlantic Coast ◽

Southwestern Atlantic ◽

First Report ◽

Southwestern Atlantic Ocean ◽

Patagonian Coast ◽

Usual Site

AbstractTwo cercariae, one of them ocellate and with well developed tail (Monorchiidae) and another apharyngeate brevifurcocercous (Aporocotylidae), parasite of Amiantis purpurata (Lamarck, 1818) (Bivalvia, Veneridae) from the Patagonian coast on the Southwestern Atlantic Ocean, are described. These reports comprise the second monorchiid intramolluscan infection reported for the Southern Hemisphere and first intramolluscan aporocotylid for the Southern Hemisphere. In addition, this constitutes the first report of aporocotylid intramolluscan stages (parthenita) occupying only the haemocoel of the gills of a marine molluscan host rather than the digestive gland and gonad, the usual site of infection.

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Scissurella clathrata in the San Jorge Gulf (Argentina) and the identity of the enigmatic S. dalli Bartsch, 1903 (Gastropoda: Scissurellidae)

Zoosymposia ◽

10.11646/zoosymposia.1.1.15 ◽

2008 ◽

Vol 1 ◽

pp. 265-269

Author(s):

DIEGO G. ZELAYA ◽

DANIEL L. GEIGER

Keyword(s):

United States ◽

Atlantic Ocean ◽

Smithsonian Institution ◽

Original Description ◽

The United States ◽

Type Locality ◽

National Museum ◽

Southwestern Atlantic ◽

Southwestern Atlantic Ocean ◽

First Time

Scissurella dalli Bartsch, 1903, from the southwestern Atlantic Ocean has been reported at least six times in the malacological literature. However, the species is thus far known only from the original description; it was never fi gured; and the type material is missing from the original repository, the United States National Museum, Smithsonian Institution. In the present study, we examine specimens of a scissurellid collected adjacent to the type locality of Scissurella dalli, and evaluate their identity. These specimens proved to correspond to Scissurella clathrata Strebel, 1908. Even though this species shows some similarity with the original description of Scissurella dalli, the vague description by Bartsch lacking details and even containing contradictory indications, led us to the conclusion that they are not conspecifi c. Thus, Scissurella clathrata is reported for the first time at the type locality of S. dalli, and the latter remains as a nomen dubium.

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Notocotylus primulus n. sp. (Trematoda: Notocotylidae) from the crested duck Lophonetta specularioides (Aves, Anatidae) from Patagonian coast, southwestern Atlantic Ocean

Parasitology International ◽

10.1016/j.parint.2019.101976 ◽

2020 ◽

Vol 74 ◽

pp. 101976 ◽

Cited By ~ 2

Author(s):

Julia Inés Diaz ◽

Carmen Gilardoni ◽

Eliana Lorenti ◽

Florencia Cremonte

Keyword(s):

Atlantic Ocean ◽

Southwestern Atlantic ◽

Southwestern Atlantic Ocean ◽

Patagonian Coast

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New species of the genera Havelockia and Thyone (Echinodermata: Holothuroidea) and first record of T. crassidisca from the southwestern Atlantic Ocean

Zootaxa ◽

10.11646/zootaxa.4407.4.5 ◽

2018 ◽

Vol 4407 (4) ◽

pp. 553 ◽

Cited By ~ 2

Author(s):

LUCIANA MARTINS ◽

MARCOS TAVARES

Keyword(s):

New Species ◽

Atlantic Ocean ◽

Body Wall ◽

First Record ◽

South Atlantic Ocean ◽

Brazilian Coast ◽

Southwestern Atlantic ◽

Southwestern Atlantic Ocean ◽

Two New Species ◽

First Time

Two new species in the genera Thyone and Havelockia are described and illustrated based upon specimens collected from off the southeastern Brazilian coast. Thyone florianoi sp. nov. is characterized by having two pillared body wall tables with four-holed discs and introvert with multilocular tables. Thyone crassidisca is recorded herein for the first time from the South Atlantic Ocean (Brazil). Havelockia mansoae sp. nov. is distinctive in having two pillared body wall tables with four-holed discs and introvert with plates. This is the first record of the genus Havelockia from Brazilian waters.

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Diversity of Monogenoidea parasitizing scombrid fishes from Rio de Janeiro coast, Brazil

Check List ◽

10.15560/11.3.1628 ◽

2015 ◽

Vol 11 (3) ◽

pp. 1628 ◽

Cited By ~ 4

Author(s):

Marcia C. N. Justo ◽

Anna Kohn

Keyword(s):

Atlantic Ocean ◽

Rio De Janeiro ◽

Southwestern Atlantic ◽

New Host ◽

Katsuwonus Pelamis ◽

Thunnus Obesus ◽

Morphometric Features ◽

Southwestern Atlantic Ocean ◽

First Time ◽

Scombrid Fishes

Eleven known species of Monogenoidea were found parasitizing six different species of scombrid fishes collected from Rio de Janeiro coast, Southwestern Atlantic Ocean: Capsala biparasitica, Capsala katsuwoni, Capsala notosinense, Nasicola brasiliensis, Nasicola klawei, Allopseudaxinoides euthynni, Sibitrema poonui, Hexostoma albsmithi, Hexostoma euthynni, Hexostoma keokeo and Hexostoma sibi. Katsuwonus pelamis is reported as a new host to A. euthynni and Thunnus obesus to H. albsmithi. Capsala notosinense, A. euthynni, H. albsmithi and H. sibi are referred for the first time in Brazil, Southwestern Atlantic Ocean. Morphological and morphometric features are presented for each species.

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New records of the family Crangonidae (Decapoda: Caridea) from Southwestern Atlantic

Zootaxa ◽

10.11646/zootaxa.4369.1.2 ◽

2018 ◽

Vol 4369 (1) ◽

pp. 46

Author(s):

FLAVIO DE ALMEIDA ALVES-JÚNIOR ◽

GIRLENE FÁBIA SEGUNDO VIANA ◽

MARINA DE SÁ LEITÃO CÂMARA DE ARAÚJO ◽

JESSER F. SOUZA-FILHO

Keyword(s):

Atlantic Ocean ◽

New Records ◽

Southwestern Atlantic ◽

Deep Waters ◽

Southwestern Atlantic Ocean ◽

The Family ◽

First Time

The family Crangonidae comprises 22 genera and 219 species. Six species are recorded in the Southwestern Atlantic. In this paper, two species of this family, Pontophilus brevirostris Smith, 1881 and Sabinea hystrix (A. Milne-Edwards, 1881) are recorded for the first time to southwestern Atlantic Ocean. Additionally, we record the occurrence of Parapontocaris caribbaea (Boone, 1927), Parapontophilus gracilis (Smith, 1882) and Philocheras gorei (Dardeau, 1980) to the Northeast of Brazil. Through this paper, we raised the number of Cragonidae species to eight from recorded from southwestern Atlantic (Brazilian deep waters).

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