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

2011 ◽  
Vol 56 (4) ◽  
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.

scholarly journals Spirorchiids (Digenea: Spirorchiidae) infecting a Hawksbill sea turtle Eretmochelys imbricata (Linnaeus 1758) from Brazil

2008 ◽  
Vol 60 (3) ◽  
pp. 663-666 ◽  
Author(s):  
M.R. Werneck ◽  
B.M.G. Gallo ◽  
R.J. Silva
Keyword(s):  
Small Intestine ◽  
Atlantic Ocean ◽  
Sea Turtle ◽  
Southwestern Atlantic ◽  
New Host ◽  
Eretmochelys Imbricata ◽  
First Report ◽  
Young Specimen ◽  
Southwestern Atlantic Ocean

The occurrence of Amphiorchis caborojoensis Fischthal & Acholonu 1976 and Carettacola stunkardi Martin & Bamberger 1952 in a young specimen of Hawksbill sea turtle Eretmochelys imbricata Linnaeus 1758 in Brazil was reported. Five A. caborojoensis trematodes were found in the small intestine (n=2) and liver (n=3), and two adult C. stunkardi specimens were collected from body wash. This is the first report of parasites of E. imbricata in Brazilian waters and Southwestern Atlantic Ocean and the second report of members of the Spirorchiidae family in that region. In addition, E. imbricata is a new host recorded for C. stunkardi.

The genus Hybocodon (Cnidaria, Hydrozoa) in the southwestern Atlantic Ocean, with a revision of the species recorded from the area

Zootaxa ◽  
2012 ◽  
Vol 3523 (1) ◽  
pp. 39 ◽  
Author(s):  
CAROLINA S. RODRIGUEZ ◽  
THAÍS P. MIRANDA ◽  
ANTONIO C. MARQUES ◽  
HERMES MIANZAN ◽  
GABRIEL GENZANO
Keyword(s):  
Atlantic Ocean ◽  
Southern Hemisphere ◽  
Geographical Distribution ◽  
Southwestern Atlantic ◽  
The South ◽  
Western Atlantic ◽  
Diagnostic Characters ◽  
Southwestern Atlantic Ocean ◽  
Medusa Stage

The genus Hybocodon includes seven species, two of which (H. prolifer and H. unicus) have been recorded in the south-western Atlantic. These reports were based on the medusa stage and only a few diagnostic characters were described, ren-dering some of these records rather doubtful. Additionally, H. prolifer has a boreal distribution, suggesting that the reportsof this species from the southern hemisphere could correspond to other Hybocodon species. Recently, we sampled benthicand planktonic specimens of Hybocodon in the southwestern Atlantic and two species were identified: polyps andmedusae of Hybocodon chilensis Hartlaub, 1905, and medusae of Hybocodon unicus (Browne, 1902). These samples al-lowed us to review and discuss the geographical distribution and validity of previous records of Hybocodon species forthis area. We conclude that H. chilensis and H. unicus are the only Hybocodon species presently known for the southwestern Atlantic Ocean.

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

2011 ◽  
Vol 56 (2) ◽  
Author(s):  
Carmen Gilardoni ◽  
Jorge Etchegoin ◽  
Julia Diaz ◽  
Cristián Ituarte ◽  
Florencia Cremonte
Keyword(s):  
Atlantic Ocean ◽  
Intermediate Host ◽  
Snail Species ◽  
Southwestern Atlantic ◽  
Southwestern Atlantic Ocean ◽  
Patagonian Coast ◽  
Intertidal Population ◽  
First Time ◽  
First Intermediate Host

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.

Population structure and ontogenetic habitat use of Micropogonias furnieri in the Southwestern Atlantic Ocean inferred by otolith chemistry

2021 ◽  
Vol 240 ◽  
pp. 105953
Author(s):  
Esteban Avigliano ◽  
Nadia M. Alves ◽  
M. Rita Rico ◽  
Claudio O. Ruarte ◽  
Luciana D’Atri ◽  
...  
Keyword(s):  
Population Structure ◽  
Atlantic Ocean ◽  
Habitat Use ◽  
Otolith Chemistry ◽  
Southwestern Atlantic ◽  
Southwestern Atlantic Ocean ◽  
Micropogonias Furnieri

scholarly journals Abundance and demography of bottlenose dolphins inhabiting a subtropical estuary in the Southwestern Atlantic Ocean

2015 ◽  
Vol 96 (2) ◽  
pp. 332-343 ◽  
Author(s):  
Pedro F. Fruet ◽  
Fábio G. Daura-Jorge ◽  
Luciana M. Möller ◽  
Rodrigo Cezar Genoves ◽  
Eduardo R. Secchi
Keyword(s):  
Atlantic Ocean ◽  
Bottlenose Dolphins ◽  
Southwestern Atlantic ◽  
Southwestern Atlantic Ocean ◽  
Subtropical Estuary

Taxonomy of the genus Thyonella (Holothuroidea: Dendrochirotida), with mention of the first record of T. sabanillaensis from the southwestern Atlantic Ocean

Zootaxa ◽  
2018 ◽  
Vol 4527 (1) ◽  
pp. 75
Author(s):  
LUCIANA MARTINS
Keyword(s):  
Pacific Ocean ◽  
Atlantic Ocean ◽  
First Record ◽  
Morphological Characters ◽  
Sem Analysis ◽  
Southwestern Atlantic ◽  
Internal Morphology ◽  
The Pacific ◽  
Southwestern Atlantic Ocean ◽  
The Pacific Ocean

The genus Thyonella currently comprises four species which occur in the Atlantic and Pacific Oceans. Thyonella mexicana is the only species known to occur in the Pacific Ocean. The main morphological characters used to distinguish Thyonella species are their dermal ossicles. Since the differences among these characters are subtle, this contribution provides a detailed description and comparison of the ossicle assemblage of the concerned taxa. In addition, description of the internal morphology of three of the concerned species is also provided. Further, this study reports on the first record of Thyonella sabanillaensis for the Southwestern Atlantic. A worldwide revision of the distributional records of Thyonella species is presented and their taxonomy is discussed, concluding that some traditional taxonomic characters should be used cautiously. A brief discussion about the importance of SEM analysis is also provided. 

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