1
|
Riva Rossi C, Renaud CB, Quiroga P, Baker CF, Baigún C, Potter IC, Neira FJ, Morawicki SN, Solimano P. Identification of long-preserved specimens reveals the historical geographic range of the Patagonian lamprey Geotria macrostoma (Burmeister, 1868) in southern South America. JOURNAL OF FISH BIOLOGY 2024. [PMID: 38561641 DOI: 10.1111/jfb.15732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 02/27/2024] [Accepted: 03/04/2024] [Indexed: 04/04/2024]
Abstract
The lamprey genus Geotria Gray, 1851 currently includes only two species: G. australis and G. macrostoma. However, taxonomic relationships within the genus have traditionally been ambiguous and difficult to establish due to the extreme changes in morphology, dentition, and coloration that lampreys undergo during their life cycles, particularly during upstream migration and sexual maturation. Consequently, several lamprey specimens held in museum collections have remained unidentified, especially those from Argentina. In this study, a series of morphometric characters were subjected to discriminant function analysis (DFA) to identify the lamprey species collected during 1867-2004 from the de la Plata River and Patagonia. These specimens are housed at the Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" in Buenos Aires, the Museo de Historia Natural de Montevideo, and the Naturhistoriska riksmuseet in Stockholm. Based on the proportions of the length of the oral disc, prebranchial, and pre-caudal body regions, and the depth of the trunk, DFA provided conclusive evidence that the specimens corresponded to the recently revalidated G. macrostoma (Burmeister, 1868), which was originally incorrectly named as Petromyzon macrostomus Burmeister, 1868, Exomegas macrostomus (Berg, 1899), Geotria chilensis (Berg, 1895), and Geotria macrostoma f. gallegensis Smitt, 1901, as well as other nontype museum individuals of uncertain taxonomic status. The identifications of these long-preserved museum specimens provided key information on the historical geographic range of Argentinian lampreys and suggest that the disappearance of the species reported from northern localities (the Pampean Region) can be attributed to the degradation of their critical habitats, primarily caused by anthropogenic impact and climate change.
Collapse
Affiliation(s)
- Carla Riva Rossi
- Instituto de Diversidad y Evolución Austral (IDEAus-Consejo Nacional de Investigaciones Científicas y Técnicas), Puerto Madryn, Argentina
| | - Claude B Renaud
- Research and Collections, Canadian Museum of Nature, Ottawa, Ontario, Canada
| | - Pamela Quiroga
- Instituto de Diversidad y Evolución Austral (IDEAus-Consejo Nacional de Investigaciones Científicas y Técnicas), Puerto Madryn, Argentina
| | - Cindy F Baker
- National Institute of Water and Atmospheric Research Ltd, Hamilton, New Zealand
| | - Claudio Baigún
- Instituto de Investigación e Ingeniería Ambiental (CONICET-UNSAM), Buenos Aires, Argentina
| | - Ian C Potter
- Centre for Sustainable Aquatic Ecosystems, Harry Butler Institute, Murdoch University, Murdoch, Western Australia, Australia
| | - Francisco J Neira
- Neira Marine Sciences Consulting (Marscco), Blackmans Bay, Tasmania, Australia
| | - Santiago N Morawicki
- Universidad Nacional de Río Negro, Centro de Investigaciones y Transferencia de Río Negro, Viedma, Argentina
| | - Patricio Solimano
- Universidad Nacional de Río Negro, Centro de Investigaciones y Transferencia de Río Negro, Viedma, Argentina
| |
Collapse
|
2
|
Quesada CG, Herdman J, Berasain GE, Miranda LA. Influence of sewage discharge on dissolved oxygen concentration and fish diversity in the Girado stream and Chascomús lake. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:1433. [PMID: 37940746 DOI: 10.1007/s10661-023-12070-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 10/28/2023] [Indexed: 11/10/2023]
Abstract
Hypoxic aquatic environments have increased in recent decades mainly by human activities that generate pollution. The objective of this work was to study the influence of the discharge of sewage effluents from Chascomús city on the concentration of dissolved oxygen (DO) in the Girado stream and its connection with Chascomús lake and analyze the impact on fish biodiversity. Four sites were selected to measure DO and temperature weekly for one year: discharge of sewage effluent, union of the sewage effluent with the Girado stream, Girado stream and Chascomús lake. Also, ichthyological samplings were carried out in a presumed hypoxic zone and a normoxic zone of the Girado stream. The results showed that there were two hypoxic zones corresponding to the sewage effluent and the union of the effluent with the Girado stream (~3 mg l-1). Also, two normoxic zones were identified, the course of the Girado stream and the union with Chascomús lake (~ 8 mg l-1). In these areas the water temperature varied according to the seasonality of the region (from 10 to 30 °C) without differences between zones. It is important to note that these areas received a constant flow of sewage effluent from Chascomús city (~ 885,600 l per day). In the fish sampling carried out in the 4 seasons of the year, 14 typical species of the Pampas lakes were captured with species more tolerant to low DO. Pejerrey were captured in a small number in both sites but with no signs of abnormalities in the gonads.
Collapse
Affiliation(s)
- Carina Giselle Quesada
- Laboratorio de Ictiofisiología y Acuicultura, Instituto Tecnológico de Chascomús, (CONICET-UNSAM), Intendente Marino Km. 8.2 (B7130IWA), Chascomús, Escuela de Bio y Nanotecnologías (UNSAM), Buenos Aires, Argentina
| | - Javier Herdman
- Laboratorio de Ictiofisiología y Acuicultura, Instituto Tecnológico de Chascomús, (CONICET-UNSAM), Intendente Marino Km. 8.2 (B7130IWA), Chascomús, Escuela de Bio y Nanotecnologías (UNSAM), Buenos Aires, Argentina
| | - Gustavo Emilio Berasain
- Estación Hidrobiológica de Chascomús, Dirección provincial de pesca, Ministerio de Desarrollo Agrario de la provincia de Buenos Aires, Chascomús, Argentina
| | - Leandro Andrés Miranda
- Laboratorio de Ictiofisiología y Acuicultura, Instituto Tecnológico de Chascomús, (CONICET-UNSAM), Intendente Marino Km. 8.2 (B7130IWA), Chascomús, Escuela de Bio y Nanotecnologías (UNSAM), Buenos Aires, Argentina.
| |
Collapse
|
3
|
Maiztegui T, Paracampo AH, Liotta J, Cabanellas E, Bonetto C, Colautti DC. Freshwater fishes of the Río de la Plata: current assemblage structure. NEOTROPICAL ICHTHYOLOGY 2022. [DOI: 10.1590/1982-0224-2021-0159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Abstract Few studies have addressed the composition of fish assemblages of the freshwater Río de la Plata (RdlP) and have only been limited to species lists gathered over the last two centuries. As such inventories have never been reviewed or validated by fish sampling, the richness and structure of RdlP fish assemblage are poorly known. Hence, we conducted an exhaustive literature review and a fieldwork in six coastal points of Argentina to update the species composition and determine the hierarchical structure of the fish assemblage. From the 206 species registered in the literature, 48 were not confirmed, 13 were absent, five were taken as synonymized species, 29 were supported by literature and 107 were confirmed; one was an established exotic species, and three were a non-established exotic species. The findings reported here suggest that the fish assemblage currently comprises 141 species, including four new records. Analysis of fieldwork data in number and weight of fish captured resulted in an assemblage hierarchical structure of five dominant, 22 frequent, and 45 rare species; 16 dominant, 11 frequent, and 45 rare taxa, respectively. These results could be used as baseline to monitor, manage, and preserve neotropical fish species in their southern distribution boundary.
Collapse
Affiliation(s)
- Tomás Maiztegui
- Comisión de Investigaciones Científicas de la provincia de Buenos Aires, Argentina; Universidad Nacional de La Plata, Argentina
| | | | | | | | | | | |
Collapse
|
4
|
Bertora A, Fontanarrosa MS, Grosman F, Sanzano P, Rosso JJ. Trophic ecology of the Neotropical tolerant fish Corydoras paleatus under the influence of contrasting environmental conditions in a prairie stream. AN ACAD BRAS CIENC 2021; 93:e20200981. [PMID: 34586177 DOI: 10.1590/0001-3765202120200981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 03/04/2021] [Indexed: 11/22/2022] Open
Abstract
Worldwide, land use changes and urbanization affect habitat and biota in streams, drastically disrupting environmental conditions and biotic interactions. We evaluated the trophic ecology of the tolerant fish Corydoras paleatus in a prairie stream with contrasting environmental conditions intimately aligned with different nearby land uses. Gut analyses was conducted at three stream reaches with contrasting ecological attributes regarding water quality, habitat structure and riparian condition. A total of 231 guts were analyzed and 15 prey items identified. A significant variation in composition and structure of the dietary assemblage, niche breadth and feeding patterns of C. paleatus under different environmental conditions was observed. Psychodidae prevailed in most deteriorated environmental conditions and Chironomidae, followed by nematodes, in stream reaches where environmental conditions improved. Maximum niche breadth and a larger proportion of generalist individuals were found at the most deteriorated site. Conversely, the proportions of specialized individuals were slightly higher at sites with better ecological conditions. Psychodidae and mineral fragments were positively correlated with the most detrimental conditions, while filamentous algae prevailed where these conditions improved. Overall, good evidence suggesting that trophic ecology of a tolerant species is affected by local environmental conditions in water quality, habitat structure and riparian corridor was observed.
Collapse
Affiliation(s)
- Andrea Bertora
- Instituto Multidisciplinario sobre Ecosistemas y Desarrollo Sustentable (UNCPBA-CIC), Universidad Nacional del Centro de la Provincia de Buenos Aires, Pje. Arroyo Seco, s/n, Campus Universitario, Tandil, B7000, Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, Ciudad Autónoma de Buenos Aires, C1425FQB, Buenos Aires, Argentina
| | - María S Fontanarrosa
- Instituto Multidisciplinario sobre Ecosistemas y Desarrollo Sustentable (UNCPBA-CIC), Universidad Nacional del Centro de la Provincia de Buenos Aires, Pje. Arroyo Seco, s/n, Campus Universitario, Tandil, B7000, Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, Ciudad Autónoma de Buenos Aires, C1425FQB, Buenos Aires, Argentina
| | - Fabián Grosman
- Instituto Multidisciplinario sobre Ecosistemas y Desarrollo Sustentable (UNCPBA-CIC), Universidad Nacional del Centro de la Provincia de Buenos Aires, Pje. Arroyo Seco, s/n, Campus Universitario, Tandil, B7000, Buenos Aires, Argentina
| | - Pablo Sanzano
- Instituto Multidisciplinario sobre Ecosistemas y Desarrollo Sustentable (UNCPBA-CIC), Universidad Nacional del Centro de la Provincia de Buenos Aires, Pje. Arroyo Seco, s/n, Campus Universitario, Tandil, B7000, Buenos Aires, Argentina
| | - Juan J Rosso
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, Ciudad Autónoma de Buenos Aires, C1425FQB, Buenos Aires, Argentina.,Universidad Nacional de Mar del Plata, Grupo de Biotaxonomía Morfológica y Molecular de Peces, Instituto de Investigaciones Marinas y Costeras, Rodríguez Peña 4046, Mar del Plata, B7600, Buenos Aires, Argentina
| |
Collapse
|
5
|
Gutierrez MF, Simões NR, Frau D, Saigo M, Licursi M. Responses of stream zooplankton diversity metrics to eutrophication and temporal environmental variability in agricultural catchments. ENVIRONMENTAL MONITORING AND ASSESSMENT 2020; 192:792. [PMID: 33242179 DOI: 10.1007/s10661-020-08766-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 11/17/2020] [Indexed: 06/11/2023]
Abstract
Eutrophication of rivers and streams in agricultural lands is one of the main threats for biodiversity and ecosystem functions. This study was focused on seven subtropical streams where agriculture is the predominant land use. We tested the hypothesis that (i) eutrophication causes a decrease in taxonomic and functional diversity of zooplankton, leading to potential consequences for the ecosystem integrity. Furthermore, given that the temporal variability in the environmental conditions of each stream may influence the species sorting mechanisms, we also hypothesized that (ii) streams with higher temporal environmental variability have greater taxonomic and functional alpha (α) and temporal beta (βt) diversity measures regardless of the trophic state. Thus, we characterized the streams according to their trophic state and analyzed the zooplankton composition, α and βt by using taxonomic and functional perspectives. We found differences in the zooplankton composition between mesotrophic and eutrophic streams. However, eutrophic streams supported similar taxonomic and functional α diversity and similar taxonomic βt diversity to mesotrophic ones. These results were mainly explained by the occurrence of rare species occupying different temporal niches in eutrophic systems. On the contrary, functional βt diversity was lower in the eutrophic streams, being nestedness the ecological mechanisms underlying the variability in the zooplankton functional groups. Streams with higher temporal environmental variability supported greater α taxonomic diversity. However, the βt diversity metrics showed no correlation with the environmental variability, suggesting that the environmental filters of the studied systems were the overriding determinants of species turnover. Our study suggests that both taxonomic and functional perspectives should be considered to improve our knowledge on the biotic responses to environmental changes. Also, among all metrics analyzed on the zooplankton community, functional βt diversity was the most sensitive indicator of the eutrophication impact.
Collapse
Affiliation(s)
- María Florencia Gutierrez
- Instituto Nacional de Limnología (CONICET-UNL), Ciudad Universitaria, 3000, Santa Fe, Argentina.
- Escuela Superior de Sanidad "Dr. Ramón Carrillo", Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina.
| | - Nadson R Simões
- Centro de Formação em Ciências Agroflorestais Rod. Ilhéus - Vitória da Conquista, km 39, BR 415, Ferradas, Itabuna, Bahia, 45613-204, Brazil
| | - Diego Frau
- Instituto Nacional de Limnología (CONICET-UNL), Ciudad Universitaria, 3000, Santa Fe, Argentina
| | - Miguel Saigo
- Instituto Nacional de Limnología (CONICET-UNL), Ciudad Universitaria, 3000, Santa Fe, Argentina
- Facultad de Humanidades y Ciencias, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina
| | - Magdalena Licursi
- Instituto Nacional de Limnología (CONICET-UNL), Ciudad Universitaria, 3000, Santa Fe, Argentina
| |
Collapse
|