Larval Spirurida (Nematoda) Parasitizing Two Crab Species (Uca uruguayensis and Chasmagnathus granulatus) from the Southwest Atlantic Coast of Argentina

2007 ◽  
Vol 74 (1) ◽  
pp. 88-95 ◽  
Author(s):  
Florencia Cremonte ◽  
Jorge Etchegoin ◽  
Julia I. Diaz ◽  
Graciela T. Navone
Keyword(s):  
Atlantic Coast ◽  
Crab Species ◽  
Southwest Atlantic ◽  
Uca Uruguayensis ◽  
Chasmagnathus Granulatus

scholarly journals Molecular studies on larvae of Pseudoterranova parasite of Trichiurus lepturus Linnaeus, 1758 and Pomatomus saltatrix (Linnaeus, 1766) off Brazilian waters

2015 ◽  
Vol 60 (4) ◽  
Author(s):  
Juliana N. Borges ◽  
Luiz F. G. Cunha ◽  
Daniele F. Miranda ◽  
Cassiano Monteiro-Neto ◽  
Cláudia P. Santos
Keyword(s):  
Atlantic Coast ◽  
Genetic Profile ◽  
Pomatomus Saltatrix ◽  
Generic Level ◽  
Southwest Atlantic ◽  
Molecular Approaches ◽  
Pseudoterranova Decipiens ◽  
Trichiurus Lepturus ◽  
Contracaecum Osculatum ◽  
Cox 1

AbstractPseudoterranova larvae parasitizing cutlassfish Trichiurus lepturus and bluefish Pomatomus saltatrix from Southwest Atlantic coast of Brazil were studied in this work by morphological, ultrastructural and molecular approaches. The genetic analysis were performed for the ITS2 intergenic region specific for Pseudoterranova decipiens, the partial 28S (LSU) of ribosomal DNA and the mtDNA cox-1 region. We obtained results for the 28S region and mtDNA cox-1 that was amplified using the polymerase chain reaction and sequenced to evaluate the phylogenetic relationships between sequences of this study and sequences from the GenBank. The morphological profile indicated that all the nine specimens collected from both fish were L3 larvae of Pseudoterranova sp. The genetic profile confirmed the generic level but due to the absence of similar sequences for adult parasites on GenBank for the regions amplifyied, it was not possible to identify them to the species level. The sequences obtained presented 89% of similarity with Pseudoterranova decipiens (28S sequences) and Contracaecum osculatum B (mtDNA cox-1). The low similarity allied to the fact that the amplification with the specific primer for P. decipiens didn´t occur, lead us to conclude that our sequences don’t belong to P. decipiens complex.

scholarly journals Report of the Working Group on Taxonomy and Stock Identity of bottlenose dolphins in the Southwest Atlantic Ocean

10.5597/00213 ◽  
2017 ◽  
Vol 11 (1-2) ◽  
pp. 16-28 ◽  
Author(s):  
Paulo Henrique Ott ◽  
André Silva Barreto ◽  
Salvatore Siciliano ◽  
Paula Laporta ◽  
Camila Domit ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
South America ◽  
Atlantic Ocean ◽  
Working Group ◽  
Bottlenose Dolphins ◽  
Atlantic Coast ◽  
Southwest Atlantic ◽  
Current Information

This report compiles the current information on morphology, genetics, stable isotopes, acoustics and parasites of bottlenose dolphins along the Southwest Atlantic Ocean (SWAO), which includes waters of Brazil, Uruguay and Argentina. The authors also briefly review the proposed taxonomy for the genus along the Atlantic coast of South America.

scholarly journals Fecundity of Uca uruguayensis and Chasmagnathus granulatus (Decapoda, Brachyura) from the "Refugio de Vida Silvestre" Bahía Samborombón, Argentina

2007 ◽  
Vol 67 (4) ◽  
pp. 749-753 ◽  
Author(s):  
II. César ◽  
LC. Armendáriz ◽  
RV. Becerra
Keyword(s):  
Developmental Stage ◽  
Early Stage ◽  
Carapace Width ◽  
Correlation Coefficients ◽  
Egg Mass ◽  
Female Size ◽  
Stage Of Development ◽  
Egg Diameter ◽  
Uca Uruguayensis ◽  
Chasmagnathus Granulatus

The aim of the present work conducted at the Refugio de Vida Silvestre Bahía Samborombón is to analyse the most relevant aspects of the fecundity of Chasmagnathus granulatus and Uca uruguayensis. Samplings were carried out from March 2001 to February 2003. Ovigerous females of U. uruguayensis (N = 13) and C. granulatus (N = 25) were found during spring and summer, their sizes (CW) varied from 9.1 to 11.7 µm for the former species and from 22.8 to 32.4 mm for the latter. The egg diameter in U. uruguayensis ranged from 245 to 260 µm for embryos in the early stage of development and from 250 to 345 µm for those in mid-developmental stage, while in C. granulatus from 250t o 345 µm and from 260 to 365 µm respectively. Fecundity varied from 1126 to 6745 eggs/brood in U. uruguayensis and 15688-57418 eggs/brood in C. granulatus. For those females with broods in mid-developmental stage, several relationships were made. For U. uruguayensis the best correlation coefficients were obtained for the relationships: female weight vs. egg mass weight and carapace width vs. egg mass weight; for C. granulatus the best association was obtained between female size and the egg number and the egg mass weight.

scholarly journals First estimate of common bottlenose dolphin (Tursiops truncatus) (Cetacea, Delphinidae) abundance off Uruguayan Atlantic coast

10.5597/00223 ◽  
2017 ◽  
Vol 11 (1-2) ◽  
pp. 144-154 ◽  
Author(s):  
Paula Laporta ◽  
Pedro Fruet ◽  
Eduardo Secchi
Keyword(s):  
Bottlenose Dolphin ◽  
Tursiops Truncatus ◽  
Bottlenose Dolphins ◽  
Atlantic Coast ◽  
Coastal Region ◽  
Demographic Stochasticity ◽  
Southwest Atlantic ◽  
Open Population ◽  
Common Bottlenose Dolphin ◽  
Population Size Estimates

The common bottlenose dolphin Tursiops truncatus is often observed throughout the oceanic coast of Uruguay. Historically, its distribution was wider, including the estuary of the Río de la Plata, but currently its occurrence seems to be restricted mainly to the Uruguayan Atlantic coast (Rocha Department). Conflicting interests and tradeoffs between conservation and development are being generated in Uruguay. On one hand, the establishment of protected areas, responsible tourism and sustainable fisheries are promoted, while on the other hand, foreign exploitation of natural resources and development of mega-infrastructure in coastal zone are facilitated. In this work, we provide the first estimate of bottlenose dolphin’s abundance along the Uruguayan Atlantic coast. These results can be used as baseline information for monitoring population trends and guiding conservation actions for bottlenose dolphins in Uruguay. Mark-recapture models were applied to data of photoidentified animals with long-lasting natural marks. Total population size estimates of 63 individuals (95% CI = 54–74) and 61 (95% CI = 53–73) were obtained from closed and open population models, respectively. Although the estimates are within the range of values obtained for other coastal bottlenose dolphin populations in the Southwest Atlantic Ocean, as well as other regions of the world, it is lower than the values reported for populations inhabiting open habitats. This small population is probably vulnerable to non-natural removals, environmental and demographic stochasticity. Therefore, precautionary actions are recommended given the planned development for this coastal region.

Climatological study for understanding the aerosol radiative effects at southwest Atlantic coast of Europe

2019 ◽  
Vol 205 ◽  
pp. 52-66 ◽  
Author(s):  
M. Sorribas ◽  
E. Andrews ◽  
J.A. Ogren ◽  
A. del Águila ◽  
R. Fraile ◽  
...  
Keyword(s):  
Atlantic Coast ◽  
Radiative Effects ◽  
Southwest Atlantic ◽  
Aerosol Radiative Effects ◽  
Aerosol Radiative

scholarly journals Review and consideration on habitat use, distribution and life history of Lycengraulis grossidens (Agassiz, 1829) (Actinopterygii, Clupeiformes, Engraulididae)

2013 ◽  
Vol 13 (3) ◽  
pp. 121-130 ◽  
Author(s):  
Ana Cecilia Giacometti Mai ◽  
João Paes Vieira
Keyword(s):  
Life History ◽  
Habitat Use ◽  
Current Knowledge ◽  
Atlantic Coast ◽  
Local Population ◽  
High Plasticity ◽  
Southwest Atlantic ◽  
Coastal Fish ◽  
History Of ◽  
Shrimp Fisheries

In this paper, we present a summary of the current knowledge of Lycengraulis grossidens, a widely distributed coastal fish that occurs from Belize to Argentina. This species is abundant in estuaries along the Southwest Atlantic Coast and is important for recreational fishing, and as bycatch of shrimp fisheries. We compiled data available on taxonomy, phylogeny, ecology, fisheries and organized conceptually the life cycle of the species according to modern estuarine-use classification. Our review showed that along its geographic distribution and inside some particular environments (i.e., estuaries and costal lagoons) the species have been classified in a variety of ways in order to describe the remarkable complexity of habitat use that varies from freshwater resident, anadromous, marine migrant, estuarine resident, marine stragglers, catadromous to semi-catadromous. We conclude that L. grossidens is able to reproduce either in freshwater or estuarine water and postulate that it has a high plasticity in habitat use and life history, with migratory and resident contingents in the same local population. There seems to be a latitudinal change in migratory behavior of this species along the South America Coast, prevailing anadromous or semi-anadromous pattern at higher latitudes and marine migrants at the tropical northeast coast of Brazil.

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