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Santos-Neto EB, Manhães BMR, Oliveira-Ferreira N, Cordeiro CVS, Corrêa CAC, Brião JA, Guari EB, Botta S, Colosio AC, Ramos HGC, Barbosa LA, Bertozzi C, Cunha IAG, Carreira RS, Meire RO, Bisi TL, Azevedo AF, Cunha HA, Lailson-Brito J. PAHs in franciscana dolphins from the Southwestern Atlantic Ocean: Concentration and maternal transfer assessments. Mar Pollut Bull 2024; 203:116455. [PMID: 38735171 DOI: 10.1016/j.marpolbul.2024.116455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/19/2024] [Accepted: 05/01/2024] [Indexed: 05/14/2024]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are organic compounds ubiquitous in the environment and known for their toxic, mutagenic, and carcinogenic effects. These compounds can bioaccumulate in the biota and be transferred through trophic webs. The franciscana dolphin (Pontoporia blainvillei), as top predators, can be an environmental sentinels. Thus, this study aimed to provide data about PAHs concentration in their hepatic tissue collected on the coast of Espírito Santo (Franciscana Management Area, FMA Ia), Rio de Janeiro (FMA IIa), and São Paulo states (FMA IIb), in Southeastern Brazil. PAHs were detected in 86 % of franciscana dolphins (n = 50). The highest ∑PAHsTotal median concentration was reported in FMA Ia followed by FMA IIb and FMA IIa (1055.6; 523.9, and 72.1 ng.g-1 lipid weight, respectively). Phenanthrene was detected in one fetus and two neonates, showing maternal transfer of PAHs in these dolphins. Evaluating PAHs with potential toxic effects is of utmost importance for the conservation of a threatened species.
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Affiliation(s)
- E B Santos-Neto
- Laboratório de Mamíferos Aquáticos e Bioindicadores, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil; Programa de Pós-Graduação em Oceanografia, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil.
| | - B M R Manhães
- Laboratório de Mamíferos Aquáticos e Bioindicadores, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil; Programa de Pós-Graduação em Oceanografia, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil
| | - N Oliveira-Ferreira
- Laboratório de Mamíferos Aquáticos e Bioindicadores, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil
| | - C V S Cordeiro
- Laboratório de Mamíferos Aquáticos e Bioindicadores, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil; Programa de Pós-Graduação em Oceanografia, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil
| | - C A C Corrêa
- Laboratório de Mamíferos Aquáticos e Bioindicadores, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil; Programa de Pós-Graduação em Oceanografia, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil
| | - J A Brião
- Laboratório de Mamíferos Aquáticos e Bioindicadores, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil; Programa de Pós-Graduação em Oceanografia, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil
| | - E B Guari
- Laboratório de Mamíferos Aquáticos e Bioindicadores, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil
| | - S Botta
- Laboratório de Ecologia e Conservação da Megafauna Marinha (ECOMEGA), Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG)
| | - A C Colosio
- Instituto Baleia Jubarte, Caravelas, Bahia, Brazil
| | - H G C Ramos
- Instituto Baleia Jubarte, Caravelas, Bahia, Brazil
| | - L A Barbosa
- Instituto ORCA, Vila Velha, Espírito Santo, Brazil
| | - C Bertozzi
- Instituto de Biociências, câmpus do Litoral Paulista, Universidade Estadual Paulista (IB/CLP - UNESP), São Vicente, São Paulo, Brazil; Instituto Biopesca, Praia Grande, São Paulo, Brazil
| | - I A G Cunha
- Instituto ORCA, Vila Velha, Espírito Santo, Brazil
| | - R S Carreira
- LabMAM/Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), 22451-900 Rio de Janeiro, Brazil
| | - R O Meire
- Universidade Federal Do Rio de Janeiro, , Campus Duque de Caxias, Rodovia Washington Luiz, Km 105, Santa Cruz da Serra, CEP: 25240-005, Rio de Janeiro, Brazil
| | - T L Bisi
- Laboratório de Mamíferos Aquáticos e Bioindicadores, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil; Programa de Pós-Graduação em Oceanografia, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil
| | - A F Azevedo
- Laboratório de Mamíferos Aquáticos e Bioindicadores, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil; Programa de Pós-Graduação em Oceanografia, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil
| | - H A Cunha
- Laboratório de Mamíferos Aquáticos e Bioindicadores, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil; Departamento de Genética, Instituti de Biologia Roberto Alcântara Gomes, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil
| | - J Lailson-Brito
- Laboratório de Mamíferos Aquáticos e Bioindicadores, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil; Programa de Pós-Graduação em Oceanografia, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, Rio de Janeiro, Brazil
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Tostado-Marcos C, Olocco Diz MJ, Martín-Orti R, Loureiro JP, Molpeceres-Diego I, Tendillo-Domínguez E, Pérez-Lloret P, Santos-Álvarez I, González-Soriano J. Nature or Nurture: Is the Digestive System of the Pontoporia blainvillei Influenced or Determined by Its Diet? Animals (Basel) 2024; 14:661. [PMID: 38473047 DOI: 10.3390/ani14050661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 02/15/2024] [Accepted: 02/17/2024] [Indexed: 03/14/2024] Open
Abstract
The Franciscana (also known as the La Plata River Dolphin) is a small dolphin that lives in the coastal waters of Brazil, Uruguay, and Argentina. This species is considered the most endangered marine mammal in the western South Atlantic Ocean. Anatomic dissection of the digestive system of 19 animals of different ages, including 2 neonates, 12 juveniles, and 5 adults, was performed. Parameters related to length, breadth, weight, and diameter of the digestive viscera were considered in each case. Our results show that the Franciscana dolphin presents differential characteristics in relation to several parts of the digestive system, including, specifically, the tongue, the teeth, the stomach, and the small intestine. Thus, this paper add precious information to the actual knowledge of this vulnerable marine mammal species in order to improve conservation efforts.
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Affiliation(s)
- Carlos Tostado-Marcos
- Fundación Mundo Marino, Av. X 157, San Clemente del Tuyú B7105, Provincia de Buenos Aires, Argentina
| | - María Julieta Olocco Diz
- Fundación Mundo Marino, Av. X 157, San Clemente del Tuyú B7105, Provincia de Buenos Aires, Argentina
| | - Rosario Martín-Orti
- Sección Departamental de Anatomía y Embriología (Veterinaria), Facultad de Veterinaria, Universidad Complutense, Avenida Puerta de Hierro s/n, 28040 Madrid, Spain
| | - Juan-Pablo Loureiro
- Fundación Mundo Marino, Av. X 157, San Clemente del Tuyú B7105, Provincia de Buenos Aires, Argentina
| | - Ignacio Molpeceres-Diego
- Fundación Mundo Marino, Av. X 157, San Clemente del Tuyú B7105, Provincia de Buenos Aires, Argentina
- Veterinary Histology and Pathology, Atlantic Center for Cetacean Research, University Institute of Animal Health and Food Safety (IUSA), Veterinary School, University of Las Palmas de Gran Canaria, 35413 Arucas, Spain
| | | | - Pilar Pérez-Lloret
- Sección Departamental de Anatomía y Embriología (Veterinaria), Facultad de Veterinaria, Universidad Complutense, Avenida Puerta de Hierro s/n, 28040 Madrid, Spain
| | - Inmaculada Santos-Álvarez
- Sección Departamental de Anatomía y Embriología (Veterinaria), Facultad de Veterinaria, Universidad Complutense, Avenida Puerta de Hierro s/n, 28040 Madrid, Spain
| | - Juncal González-Soriano
- Sección Departamental de Anatomía y Embriología (Veterinaria), Facultad de Veterinaria, Universidad Complutense, Avenida Puerta de Hierro s/n, 28040 Madrid, Spain
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Polizzi P, Romero MB, Chiodi Boudet L, Dolagaratz Carricavur A, Gerpe M. What do small cetaceans tell us about trace elements pollution on the Argentinean coast? Franciscana dolphin as a biomonitor. Sci Total Environ 2024; 906:167428. [PMID: 37793446 DOI: 10.1016/j.scitotenv.2023.167428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 09/14/2023] [Accepted: 09/26/2023] [Indexed: 10/06/2023]
Abstract
Trace elements (TEs) constitute the oldest emerging pollutants globally, most occur from natural sources, but a few are derived from anthropogenic sources. Marine mammals are considered bioindicators of ecosystem contamination. The aims of this review is compile reports on essential and nonessential TEs occurrence in small cetaceans from Argentinean waters; and to review the existing information on the concentration of TEs in the Franciscana dolphin, a biomonitor species of the Argentine coastal marine ecosystem. We searched reports where levels of TEs were present in small cetaceans from and eight species were analysed: Pontoporia blainvillei, Tursiops truncatus gephyreus, Kogia breviceps, Delphinus delphis, Lagenorhynchus obscurus, Lagenodelphis hasei, Cephaloryhchus commersonii and Ziphius cavirostris. Essential TEs like Zn, Cu, Mn, Cr, Fe, Co, Ni, Mo, Se, As, Au, Ag, Sn, and nonessential TE as Pb, Cd, Hg, As was considered. The reports compiled in this article analysed kidney, liver, muscle and occasionally brain, skin, lung and spleen, covering a temporal range of 30 years, from 1982 to 2016. Of data analysis, we identify knowledge gaps, species of small cetaceans for which the concentration of trace metals is not yet known and areas on the Argentine coast where there are no reports that analyse them. The most recent information corresponds to the 2010 decade, and in those subsequent publications, the samples were taken at that time. This emphasizes the importance of reviewing this data, in order to compare old and new datasets, create contamination timelines and evaluate possible increases or decreases of contaminants in different study areas. The information recopilated will serve as valuable baselines to detect the future impact of increasing human, even natural, activities on marine ecosystems in the South Atlantic Ocean.
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Affiliation(s)
- P Polizzi
- Toxicología Ambiental, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales (FCEyN), Universidad Nacional de Mar del Plata (UNMdP), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Funes 3250, CC1260, 7600 Mar del Plata, Argentina.
| | - M B Romero
- Toxicología Ambiental, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales (FCEyN), Universidad Nacional de Mar del Plata (UNMdP), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Funes 3250, CC1260, 7600 Mar del Plata, Argentina
| | - L Chiodi Boudet
- Toxicología Ambiental, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales (FCEyN), Universidad Nacional de Mar del Plata (UNMdP), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Funes 3250, CC1260, 7600 Mar del Plata, Argentina
| | - A Dolagaratz Carricavur
- Toxicología Ambiental, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales (FCEyN), Universidad Nacional de Mar del Plata (UNMdP), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Funes 3250, CC1260, 7600 Mar del Plata, Argentina
| | - M Gerpe
- Toxicología Ambiental, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales (FCEyN), Universidad Nacional de Mar del Plata (UNMdP), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Funes 3250, CC1260, 7600 Mar del Plata, Argentina
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4
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Lavandier RC, Arêas J, Lemos LS, de Moura JF, Taniguchi S, Montone R, Quinete NS, Hauser-Davis RA, Siciliano S, Moreira I. Trophic Chain Organochlorine Pesticide Contamination in a Highly Productive Upwelling Area in Southeastern Brazil. Int J Environ Res Public Health 2023; 20:6343. [PMID: 37510576 PMCID: PMC10379595 DOI: 10.3390/ijerph20146343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 06/24/2023] [Accepted: 06/27/2023] [Indexed: 07/30/2023]
Abstract
Organochlorine pesticides (OCP) are legacy anthropogenic compounds known to persist for several years in the environment. The continuous use of some OCP, such as DDT, after restrictions in developing countries are cause of concern, due to their deleterious effects to marine life and humans. Studies assessing OCP contamination in coastal environments are still scarce in South America and there is a need to understand the impacts from trophic chain accumulation of these pollutants in marine life. In this study, we have assessed OCP levels in muscle and liver and estimated the biomagnification factor in several upwelling system trophic chain members, including fish, squid, and marine mammal from Southeastern Brazil. DDT degradation product DDE was the OCP detected in the highest concentrations in Franciscana dolphins (Pontoporia blainvillei), 86.4 ng·g-1 wet weight, and fish muscle and liver. In general, higher OCP levels were found in liver than in muscle, except for croaker. Biomagnification factors (BMF) of OCP in the top predator P. blainvillei and the carnivorous cutlass fish (Trichiurus lepturus) were on average between 0.2 and 1.8. Continued OCP monitoring in this region is warranted to better understand the distribution and fate of these compounds over time, with the goal to establish strategies for the conservation of local dolphin species and to assess human health risks from local coastal region populations.
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Affiliation(s)
- Ricardo Cavalcanti Lavandier
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rua Marquês de São Vicente, 225, Gávea, Rio de Janeiro 22453-900, Brazil
| | - Jennifer Arêas
- PIBIC/Fundação Oswaldo Cruz, Av. Brasil, 4.365, Manguinhos, Rio de Janeiro 21040-900, Brazil
| | - Leila Soledade Lemos
- Institute of Environment, Florida International University, North Miami, FL 33181, USA
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL 33199, USA
| | - Jailson Fulgêncio de Moura
- Systems Ecology, Leibniz Center for Tropical Marine Ecology (ZMT), Fahrenheitstrasse 6, 28359 Bremen, Germany
| | - Satie Taniguchi
- Instituto Oceanográfico, Universidade de São Paulo (USP), Praça do Oceanográfico, 191, Butantã, São Paulo 05508-120, Brazil
| | - Rosalinda Montone
- Instituto Oceanográfico, Universidade de São Paulo (USP), Praça do Oceanográfico, 191, Butantã, São Paulo 05508-120, Brazil
| | - Natalia Soares Quinete
- Institute of Environment, Florida International University, North Miami, FL 33181, USA
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL 33199, USA
| | - Rachel Ann Hauser-Davis
- Laboratório de Avaliação e Promoção da Saúde Ambiental, Instituto Oswaldo Cruz/Fundação Oswaldo Cruz, Av. Brasil, 4.365, Manguinhos, Rio de Janeiro 21040-900, Brazil
| | - Salvatore Siciliano
- Departamento de Ciências Biológicas, Escola Nacional de Saúde Pública/Fundação Oswaldo Cruz, Rua Leopoldo Bulhões, 1.480, Manguinhos, Rio de Janeiro 20911-300, Brazil
| | - Isabel Moreira
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rua Marquês de São Vicente, 225, Gávea, Rio de Janeiro 22453-900, Brazil
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Troina GC, Teixeira CR, Dehairs F, Secchi ER, Botta S. Potential biases in dietary interpretation derived from stable isotope analysis of small dolphin teeth. Mar Environ Res 2023; 184:105857. [PMID: 36577309 DOI: 10.1016/j.marenvres.2022.105857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 10/23/2022] [Accepted: 12/18/2022] [Indexed: 06/17/2023]
Abstract
We analyzed δ13C and δ15N values in different tooth portions (Growth Layer Groups, GLGs) of franciscanas, Pontoporia blainvillei, to investigate their effect on whole tooth (WT) isotopic values and the implications for dietary estimates. Tooth portions included the dentin deposited during the prenatal development (PND), the first year of life (GLG1) deposited during the nursing period and the central part of the tooth with no distinction amongst subsequent GLGs (Center). Isotopic mixing models estimating the contribution of PND, GLG1 and Center to WT showed that GLG1 has a strong effect on WT isotope values in juveniles, while Center only starts to affect WT isotopic values from age four. Isotopic mixing models estimating prey contribution to the diet of juveniles using WT vs Center tooth portions significantly differed in dietary outputs, demonstrating that GLG1 influence on WT isotope values affects dietary estimates in young franciscanas. As the small tooth size and narrowness of the last GLGs hinder the analysis of individual layers, we recommend excluding GLG1 in studies based on teeth isotope composition in franciscanas and caution when interpreting isotopic values from the WT of other small cetaceans.
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Affiliation(s)
- Genyffer C Troina
- Laboratório de Ecologia e Conservação da Megafauna Marinha, Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Av. Itália, km 8, Rio Grande, RS, 96203-900, Brazil; Analytical, Environmental and Geo-Chemistry Department (AMGC), Vrije Universiteit Brussel (VUB), B-1050, Brussels, Belgium; Institute for the Oceans and Fisheries, University of British Columbia (UBC), V6T 1Z4, Vancouver, BC, Canada.
| | - Clarissa R Teixeira
- Whale Habitat, Ecology and Telemetry Laboratory, Marine Mammal Institute, Oregon State University, Newport, OR, USA
| | - Frank Dehairs
- Analytical, Environmental and Geo-Chemistry Department (AMGC), Vrije Universiteit Brussel (VUB), B-1050, Brussels, Belgium
| | - Eduardo R Secchi
- Laboratório de Ecologia e Conservação da Megafauna Marinha, Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Av. Itália, km 8, Rio Grande, RS, 96203-900, Brazil
| | - Silvina Botta
- Laboratório de Ecologia e Conservação da Megafauna Marinha, Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Av. Itália, km 8, Rio Grande, RS, 96203-900, Brazil
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Irigoitia MM, Palomba M, Braicovich PE, Lanfranchi AL, Denuncio PE, Gana JCM, Mattiucci S, Timi JT. Genetic identification of Anisakis spp. (Nematoda: Anisakidae) from cetaceans of the Southwestern Atlantic Ocean: ecological and zoogeographical implications. Parasitol Res 2021; 120:1699-1711. [PMID: 33674924 DOI: 10.1007/s00436-021-07088-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 02/15/2021] [Indexed: 02/01/2023]
Abstract
Adult Anisakis Dujardin, 1845 were found in two specimens of killer whale Orcinus orca and one specimen of franciscana Pontoporia blainvillei stranded from off the coast of Buenos Aires Province, Argentina. Genetic identification of the nematodes (N = 144) was performed by sequence analysis of the mitochondrial (mtDNA cox2) and the nuclear (nas 10 nDNA) gene loci. Anisakis pegreffii and Anisakis berlandi were detected in the two individuals of O. orca, while Anisakis typica and A. pegreffii were identified in P. blainvillei. Morphological and morphometric analysis also carried out on adult specimens of A. pegreffii and A. berlandi has allowed to underlining the usefulness of genetic/molecular markers in their recognition. This represents the first record of A. pegreffii in O. orca and P. blainvillei and of A. berlandi in O. orca. This is also the first sympatric and syntopic occurrence, as adults, of A. pegreffii and A. berlandi from the Austral Region of the Atlantic Ocean waters. These results provide insights into the knowledge of the host ranges and geographical distribution of these parasites in the basin waters of the region. Pontoporia blainvillei showed low abundance values of infection with Anisakis spp., which is the general pattern for coastal dolphins in the area, whereas O. orca harboured higher abundance of Anisakis spp. than those previously recorded among cetacean species in the Argentine Sea. Differences in the Anisakis spp. distribution and their parasitic loads, observed among the three host specimens, are discussed in relation to the oceanographic parameters, as well as to the host ecology. The usefulness of genetic/molecular markers in the recognition of adults of the sibling species A. pegreffii and A. berlandi with considerable overlapping in morphometric and morphological characters was underlined. The distribution of Anisakis species from Southwestern Atlantic waters is discussed in relation to their value as indicators for studies on the zoogeography of their hosts at a regional-scale level.
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Affiliation(s)
- M M Irigoitia
- Laboratorio de Ictioparasitología, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Funes 3350, 7600, Mar del Plata, Argentina
| | - M Palomba
- Department of Public Health and Infectious Diseases, Section of Parasitology, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci-Bolognetti, Sapienza-University of Rome, P.le Aldo Moro, 5, 00185, Rome, Italy
| | - P E Braicovich
- Laboratorio de Ictioparasitología, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Funes 3350, 7600, Mar del Plata, Argentina.
| | - A L Lanfranchi
- Laboratorio de Ictioparasitología, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Funes 3350, 7600, Mar del Plata, Argentina
| | - P E Denuncio
- Grupo de Mamíferos Marinos, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Funes 3350, 7600, Mar del Plata, Argentina
| | - J C M Gana
- Grupo de Mamíferos Marinos, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Funes 3350, 7600, Mar del Plata, Argentina
| | - S Mattiucci
- Department of Public Health and Infectious Diseases, Section of Parasitology, Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci-Bolognetti, Sapienza-University of Rome, P.le Aldo Moro, 5, 00185, Rome, Italy
| | - J T Timi
- Laboratorio de Ictioparasitología, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Funes 3350, 7600, Mar del Plata, Argentina
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7
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Figueiredo GCE, do Amaral KB, Santos MCDO. Cetaceans along the southeastern Brazilian coast: occurrence, distribution and niche inference at local scale. PeerJ 2020; 8:e10000. [PMID: 33083120 PMCID: PMC7543724 DOI: 10.7717/peerj.10000] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 08/29/2020] [Indexed: 11/29/2022] Open
Abstract
It is deemed important to understand cetacean occurrence and distribution to comprehend their ecological roles. The geographical occurrence of species’ niche can be used to better describe their potential distribution. The niche can be defined using environmental variables. Those variables are considered static and not affected by biological activities. The present study goal was to assess the occurrence and distribution of cetaceans along the southeastern Brazilian coast, as well as to define the fundamental and realized niche of each species and to investigate niche overlap at local scale. The environmental requirements for each species were also investigated throughout statistical tests. Sighting data were obtained through oceanographic surveys conducted between 2012 and 2015. The environmental variables available on MARSPEC and the software NicheA were used for the ecological niche modeling. A total of twelve cetacean species were identified and the potential distribution areas of the six commonest ones were defined. Even though the species presented different environmental preferences, most of them had partial overlap among niches and potential distribution areas. The environmental heterogeneity of the study area might support the co-occurrence of different species with different environmental requirements.
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Affiliation(s)
| | - Karina Bohrer do Amaral
- Department of Zoology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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Abstract
Convergent evolution can provide insights into the predictability of, and constraints on, the evolution of biodiversity. One striking example of convergence is seen in the ‘river dolphins’. The four dolphin genera that make up the ‘river dolphins’ (Inia geoffrensis, Pontoporia blainvillei, Platanista gangetica and Lipotes vexillifer) do not represent a single monophyletic group, despite being very similar in morphology. This has led many to using the ‘river dolphins’ as an example of convergent evolution. We investigate whether the skulls of the four ‘river dolphin’ genera are convergent when compared to other toothed dolphin taxa in addition to identifying convergent cranial and mandibular features. We use geometric morphometrics to uncover shape variation in the skulls of the ‘river dolphins’ and then apply a number of phylogenetic techniques to test for convergence. We find significant convergence in the skull morphology of the ‘river dolphins’. The four genera seem to have evolved similar skull shapes, leading to a convergent morphotype characterised by elongation of skull features. The cause of this morphological convergence remains unclear. However, the features we uncover as convergent, in particular elongation of the rostrum, support hypotheses of shared feeding mode or diet and thus provide the foundation for future work into convergence within the Odontoceti.
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Affiliation(s)
- Charlotte E Page
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Natalie Cooper
- Department of Life Sciences, Natural History Museum, London, United Kingdom
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9
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Gariboldi MC, Túnez JI, Failla M, Hevia M, Panebianco MV, Paso Viola MN, Vitullo AD, Cappozzo HL. Patterns of population structure at microsatellite and mitochondrial DNA markers in the franciscana dolphin ( Pontoporia blainvillei). Ecol Evol 2016; 6:8764-8776. [PMID: 28035267 PMCID: PMC5192793 DOI: 10.1002/ece3.2596] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 10/07/2016] [Accepted: 10/19/2016] [Indexed: 12/25/2022] Open
Abstract
The franciscana dolphin, Pontorporia blainvillei, is an endemic cetacean of the Atlantic coast of South America. Its coastal distribution and restricted movement patterns make this species vulnerable to anthropogenic factors, particularly to incidental bycatch. We used mitochondrial DNA control region sequences, 10 microsatellites, and sex data to investigate the population structure of the franciscana dolphin from a previously established management area, which includes the southern edge of its geographic range. F‐statistics and Bayesian cluster analyses revealed the existence of three genetically distinct populations. Based on the microsatellite loci, similar levels of genetic variability were found in the area; 13 private alleles were found in Monte Hermoso, but none in Claromecó. When considering the mitochondrial DNA control region sequences, lower levels of genetic diversity were found in Monte Hermoso, when compared to the other localities. Low levels of gene flow were found between most localities. Additionally, no evidence of isolation by distance nor sex‐biased dispersal was detected in the study area. In view of these results showing that populations from Necochea/Claromecó, Monte Hermoso, and Río Negro were found to be genetically distinct and the available genetic information for the species previously published, Argentina would comprise five distinct populations: Samborombón West/Samborombón South, Cabo San Antonio/Buenos Aires East, Necochea/Claromecó/Buenos Aires Southwest, Monte Hermoso, and Río Negro. In order to ensure the long‐term survival of the franciscana dolphin, management and conservation strategies should be developed considering each of these populations as different management units.
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Affiliation(s)
- María Constanza Gariboldi
- Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico (CEBBAD) Universidad MaimónidesCiudad Autónoma de Buenos Aires Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Ciudad Autónoma de Buenos Aires Argentina
| | - Juan Ignacio Túnez
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Ciudad Autónoma de Buenos Aires Argentina; Grupo de Estudios en Ecología de Mamíferos Departamento de Ciencias Básicas Universidad Nacional de Luján Luján Argentina
| | | | | | - María Victoria Panebianco
- Laboratorio de Ecología Comportamiento y Mamíferos Marinos Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" Ciudad Autónoma de Buenos Aires Argentina
| | - María Natalia Paso Viola
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Ciudad Autónoma de Buenos Aires Argentina; Laboratorio de Ecología Comportamiento y Mamíferos Marinos Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" Ciudad Autónoma de Buenos Aires Argentina; Laboratorio de Ecología y Conservación de Vida Silvestre Centro Austral de Investigaciones Científicas (CADIC) Ushuaia Argentina
| | - Alfredo Daniel Vitullo
- Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico (CEBBAD) Universidad MaimónidesCiudad Autónoma de Buenos Aires Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Ciudad Autónoma de Buenos Aires Argentina
| | - Humberto Luis Cappozzo
- Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico (CEBBAD) Universidad Maimónides Ciudad Autónoma de Buenos Aires Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Ciudad Autónoma de Buenos Aires Argentina; Laboratorio de Ecología Comportamiento y Mamíferos Marinos Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" Ciudad Autónoma de Buenos Aires Argentina; Fundación de Historia Natural Félix de Azara Universidad Maimónides Ciudad Autónoma de Buenos Aires Argentina
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10
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Romero MB, Polizzi P, Chiodi L, Das K, Gerpe M. The role of metallothioneins, selenium and transfer to offspring in mercury detoxification in Franciscana dolphins ( Pontoporia blainvillei). Mar Pollut Bull 2016; 109:650-654. [PMID: 27210558 DOI: 10.1016/j.marpolbul.2016.05.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 05/03/2016] [Accepted: 05/04/2016] [Indexed: 06/05/2023]
Abstract
The concentrations of mercury (Hg), selenium (Se) and metallothioneins (MT) were evaluated in fetuses, calves, juveniles and adults of the endangered coastal Franciscana dolphin (Pontoporia blainvillei) from Argentina. Mercury concentrations varied among analyzed tissues (liver, kidney, muscle and brain), with liver showing the higher concentrations in all specimens. An age-dependent accumulation was found in liver, kidney and brain. No significant relationship between Hg and MT concentrations was found for all tissues analyzed. Hepatic Hg molar concentrations were positively correlated with those of Se, indicating a great affinity between these two elements. Furthermore, dark granules of HgSe were observed in Kupffer cells in the liver by electron microscopy, suggesting the role of this macrophage in the detoxification of Hg. A transfer of Hg through placenta was proved. The presence of Hg in brain in all age classes did not show concentrations associated with neurotoxicity.
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Affiliation(s)
- M B Romero
- Instituto de Investigaciones Marinas y Costeras (IIMyC), Universidad Nacional de Mar del Plata (UNMDP), Toxicología Ambiental, Dpto. Ciencias Marinas, FCEyN, Funes 3350, 7600 Mar del Plata, Argentina.
| | - P Polizzi
- Instituto de Investigaciones Marinas y Costeras (IIMyC), Universidad Nacional de Mar del Plata (UNMDP), Toxicología Ambiental, Dpto. Ciencias Marinas, FCEyN, Funes 3350, 7600 Mar del Plata, Argentina
| | - L Chiodi
- Instituto de Investigaciones Marinas y Costeras (IIMyC), Universidad Nacional de Mar del Plata (UNMDP), Toxicología Ambiental, Dpto. Ciencias Marinas, FCEyN, Funes 3350, 7600 Mar del Plata, Argentina
| | - K Das
- Laboratory for Oceanology, MARE Center B6c, University of Liege, Liege 4000, Belgium
| | - M Gerpe
- Instituto de Investigaciones Marinas y Costeras (IIMyC), Universidad Nacional de Mar del Plata (UNMDP), Toxicología Ambiental, Dpto. Ciencias Marinas, FCEyN, Funes 3350, 7600 Mar del Plata, Argentina
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11
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del Castillo DL, Flores DA, Cappozzo HL. Ontogenetic development and sexual dimorphism of franciscana dolphin skull: A 3D geometric morphometric approach. J Morphol 2014; 275:1366-75. [PMID: 25052760 DOI: 10.1002/jmor.20309] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 06/02/2014] [Accepted: 07/05/2014] [Indexed: 01/12/2023]
Abstract
The aim of this work was to study the postnatal ontogenetic development of Pontoporia blainvillei skull, identifying major changes on shape, and relating them to relevant factors in the life history of the species. We analyzed a complete ontogenetic series (73♂, 83♀) with three-dimensional geometric morphometric techniques. Immature dolphins showed a very well-developed braincase and a poorly developed rostrum, and the principal postnatal changes affected the rostrum and the temporal fossa, both structures implied functionally to the feeding apparatus, thus suggesting a specialized mode for catch fast prey in P. blainvillei. Osseous elements associated with sound production were already well developed on immature dolphins, suggesting the importance of this apparatus since the beginning of postnatal life. Sexual dimorphism was detected on both shape and size variables. Females were bigger than males, in accordance with previous studies. Shape differences between sexes were found on the posterior part of premaxillaries and external bony nares (P < 0.01), suggesting that this sexual dimorphism is related to differences on vocalization capabilities.
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Affiliation(s)
- Daniela L del Castillo
- Laboratorio de Ecología, Comportamiento y Mamíferos Marinos, División Mastozoología, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" Av, Ángel Gallardo 470 (C1405DJR), Buenos Aires, Argentina; CONICET, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
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12
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Di Beneditto APM, Ramos RMA. Marine debris ingestion by coastal dolphins: what drives differences between sympatric species? Mar Pollut Bull 2014; 83:298-301. [PMID: 24746357 DOI: 10.1016/j.marpolbul.2014.03.057] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Revised: 03/13/2014] [Accepted: 03/29/2014] [Indexed: 06/03/2023]
Abstract
This study compared marine debris ingestion of the coastal dolphins Pontoporia blainvillei and Sotalia guianensis in a sympatric area in Atlantic Ocean. Among the 89 stomach contents samples of P. blainvillei, 14 (15.7%) contained marine debris. For S. guianensis, 77 stomach contents samples were analyzed and only one of which (1.30%) contained marine debris. The debris recovered was plastic material: nylon yarns and flexible plastics. Differences in feeding habits between the coastal dolphins were found to drive their differences regarding marine debris ingestion. The feeding activity of P. blainvillei is mainly near the sea bottom, which increases its chances of ingesting debris deposited on the seabed. In contrast, S. guianensis has a near-surface feeding habit. In the study area, the seabed is the main zone of accumulation of debris, and species with some degree of association with the sea bottom may be local bioindicators of marine debris pollution.
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Affiliation(s)
- Ana Paula Madeira Di Beneditto
- Laboratório de Ciências Ambientais, CBB, Universidade Estadual do Norte Fluminense, Av. Alberto Lamego 2.000, Campos, RJ 28013-600, Brazil.
| | - Renata Maria Arruda Ramos
- Everest Tecnologia em Serviços Ltda., Av. João Batista Parra, 633/sala 901, Enseada do Suá, Vitória, ES 29052-123, Brazil.
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13
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Polizzi PS, Romero MB, Chiodi Boudet LN, Das K, Denuncio PE, Rodríguez DH, Gerpe MS. Metallothioneins pattern during ontogeny of coastal dolphin, Pontoporia blainvillei, from Argentina. Mar Pollut Bull 2014; 80:275-281. [PMID: 24467859 DOI: 10.1016/j.marpolbul.2013.10.037] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 10/17/2013] [Accepted: 10/20/2013] [Indexed: 06/03/2023]
Abstract
Metallothioneins are signals of metal exposure and widely used in biomonitoring. Franciscana dolphin is an endemic cetacean from the Southwestern Atlantic Ocean, classified as Vulnerable A3d by the IUCN. Metallothionein, copper and zinc in Franciscana were assessed in two geographic groups; one inhabits La Plata River estuary, anthropogenically impacted, and the other inhabits marine coastal ecosystems, with negligible pollution. Despite the environment, hepatic and renal MT concentrations were similar, but there was a declining trend from early to later developmental stages. Metallothionein K/L, Cu and Zn levels corresponded to normal reported ranges. MT was not related with Cd. Fetal concentrations were higher than its mother. These results and the health status of dolphins are suggesting that MT correspond to physiological ranges for the species, and they are closely to homeostasis of Zn and Cu, according to its ontogenetic changes. The information constitutes the first MT information on Franciscana dolphin and can be considered as baseline for the species conservation.
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Affiliation(s)
- P S Polizzi
- Toxicología Ambiental, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, (CP. 7600) Mar del Plata, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina.
| | - M B Romero
- Toxicología Ambiental, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, (CP. 7600) Mar del Plata, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina.
| | - L N Chiodi Boudet
- Toxicología Ambiental, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, (CP. 7600) Mar del Plata, Argentina.
| | - K Das
- Laboratory for Oceanology - MARE Center B6c, University of Liege, Liege 4000, Belgium.
| | - P E Denuncio
- Toxicología Ambiental, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, (CP. 7600) Mar del Plata, Argentina; Biología, Ecología y Conservación de Mamíferos Marinos, Departamento de Ciencias Marinas, IIMyC, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Argentina, Funes 3350, CP. 7600 Mar del Plata, Argentina.
| | - D H Rodríguez
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; Biología, Ecología y Conservación de Mamíferos Marinos, Departamento de Ciencias Marinas, IIMyC, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Argentina, Funes 3350, CP. 7600 Mar del Plata, Argentina.
| | - M S Gerpe
- Toxicología Ambiental, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, (CP. 7600) Mar del Plata, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina.
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