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González-Castro M, Cardoso YP, Hughes LC, Ortí G. Hybridization is strongly constrained by salinity during secondary contact between silverside fishes (Odontesthes, Atheriniformes). Heredity (Edinb) 2022; 129:233-243. [PMID: 35821279 PMCID: PMC9519950 DOI: 10.1038/s41437-022-00555-9] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 06/28/2022] [Accepted: 06/28/2022] [Indexed: 11/08/2022] Open
Abstract
This study investigates a contact zone between two silverside fish species (marine Odontesthes argentinensis and freshwater O. bonariensis) in the estuarine Mar Chiquita lagoon along the Atlantic coast in Argentina (MChL), in which intermediate morphs had been reported. It has been suggested that admixture and introgression occur in MChL between these two species, but direct genetic evidence is lacking. Leveraging samples collected over several years (n = 676), we document the spatial distribution of both species and intermediate morphs within this habitat and collect landmark-based morphometric and multilocus genetic data (9876 loci for n = 110 individuals) to test the hypothesis of hybridization. Our analysis unambiguously characterizes intermediate morphs as F1 or F2 hybrids. We show that the low frequency of hybrid individuals in MChL may be explained by uneven abundance of parental species, which in turn are strongly affected by water salinity, limiting the size of the contact zone. Although hybrids seem to be fertile, their fitness may be reduced by external and intrinsic factors that may limit their success and suggest that this is an unstable hybrid zone. Genetic distinctiveness of both parental species is strongly supported by genome-wide data, explaining a known pattern of mitonuclear discordance as a consequence of hybridization followed by mitochondrial introgression. A clear signature of population genetic structure was detected in O. argentinensis, distinguishing MChL residents from marine populations of this species, that also was supported by distinctive morphometric features among these groups. Previous hypotheses of speciation in these fishes are discussed in the light of the new findings.
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Affiliation(s)
- Mariano González-Castro
- Grupo de Biotaxonomía Morfológica y molecular de peces, IIMyC-CONICET, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Yamila P Cardoso
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
- Laboratorio de Sistemática y Biología Evolutiva, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, La Plata, Argentina.
- Department of Biological Sciences, George Washington University, Washington, DC, USA.
| | - Lily C Hughes
- Department of Biological Sciences, George Washington University, Washington, DC, USA
- Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
| | - Guillermo Ortí
- Department of Biological Sciences, George Washington University, Washington, DC, USA
- Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
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Albanesi C, González-Castro M, López-Mañanes A. Correction to: Prejuveniles of Mugil liza (Actinopterygii; Fam. Mugilidae) show digestive and metabolic flexibility upon different postprandial times and refeeding. J Comp Physiol B 2022; 192:575. [PMID: 35687154 DOI: 10.1007/s00360-022-01445-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Camila Albanesi
- Grupo Fisiología Bioquímica, Integrativa y Adaptativa, Instituto de Investigaciones Marinas y Costeras (IIMyC), Universidad Nacional de Mar del Plata CONICET-FCEyN, Funes 3250, 7600, Mar del Plata, Argentina
| | - Mariano González-Castro
- Grupo Fisiología Bioquímica, Integrativa y Adaptativa, Instituto de Investigaciones Marinas y Costeras (IIMyC), Universidad Nacional de Mar del Plata CONICET-FCEyN, Funes 3250, 7600, Mar del Plata, Argentina
| | - Alejandra López-Mañanes
- Grupo Fisiología Bioquímica, Integrativa y Adaptativa, Instituto de Investigaciones Marinas y Costeras (IIMyC), Universidad Nacional de Mar del Plata CONICET-FCEyN, Funes 3250, 7600, Mar del Plata, Argentina.
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Guimarães KLA, Rosso JJ, González-Castro M, Souza MFB, Díaz de Astarloa JM, Rodrigues LRR. A new species of Hoplias malabaricus species complex (Characiformes: Erythrinidae) from the Crepori River, Amazon basin, Brazil. J Fish Biol 2022; 100:425-443. [PMID: 34792799 DOI: 10.1111/jfb.14953] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 05/21/2021] [Revised: 10/27/2021] [Accepted: 11/15/2021] [Indexed: 06/13/2023]
Abstract
A new species belonging to the Hoplias malabaricus complex from the Amazon basin, Brazil, is described. The new species is characterized by 15-16 predorsal scales, 37-39 lateral-line scales, 5 scales from dorsal fin to lateral line, 38-39 vertebrae, iii-iv, 7-8 anal-fin rays, ii-iv, 12-15 caudal-fin rays, last vertical series of scales on the base of caudal-fin rays forming a straight line, 6-7 dark bands in anal fin and no distinctive dark bands or blotches on flanks. The new species is also distinguished from other congeners of the H. malabaricus species-group by means of landmark-based morphometrics and DNA Barcoding (Cytochrome c Oxidase I gene). An identification key to species of the H. malabaricus species complex is provided.
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Affiliation(s)
- Karen L A Guimarães
- Programa de Pós-graduação em Biodiversidade e Biotecnologia (Rede BIONORTE - Polo Pará), Universidade Federal do Oeste do Pará, Instituto de Saúde Coletiva, Santarém, Brazil
- Laboratório de Genética e Biodiversidade, Universidade Federal do Oeste do Pará, Instituto de Ciências da Educação, Santarém, Brazil
| | - Juan J Rosso
- Grupo de Biotaxonomía Morfológica y Molecular de Peces, Instituto de Investigaciones Marinas y Costeras, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Mariano González-Castro
- Grupo de Biotaxonomía Morfológica y Molecular de Peces, Instituto de Investigaciones Marinas y Costeras, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Mendelsohn F B Souza
- Laboratório de Genética e Biodiversidade, Universidade Federal do Oeste do Pará, Instituto de Ciências da Educação, Santarém, Brazil
| | - Juan M Díaz de Astarloa
- Grupo de Biotaxonomía Morfológica y Molecular de Peces, Instituto de Investigaciones Marinas y Costeras, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Luís R R Rodrigues
- Programa de Pós-graduação em Biodiversidade e Biotecnologia (Rede BIONORTE - Polo Pará), Universidade Federal do Oeste do Pará, Instituto de Saúde Coletiva, Santarém, Brazil
- Laboratório de Genética e Biodiversidade, Universidade Federal do Oeste do Pará, Instituto de Ciências da Educação, Santarém, Brazil
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Albanesi C, González-Castro M, López-Mañanes A. Understanding the early ontogenetic stages of Mugil liza (Mugilidae): Morphological traits and digestive/metabolic profile of pre-juveniles after recruitment. J Fish Biol 2021; 98:643-654. [PMID: 33124694 DOI: 10.1111/jfb.14605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 09/21/2020] [Revised: 10/23/2020] [Accepted: 10/28/2020] [Indexed: 06/11/2023]
Abstract
The family Mugilidae consists mainly of diadromous species, whose reproduction occurs in offshore waters. Pre-juveniles shift their diet in the surf zone (zooplanktophagous to iliophagous). Later, during their recruitment into estuaries, huge changes take place in their digestive system. However, digestive and metabolic characteristics and some morphological traits at recruitment are unknown for Mugilidae. We performed comparative studies on early and late pre-juveniles of Mugil liza recruited in Mar Chiquita Coastal Lagoon (37°32'-37°45'S, 57°19'-57°26'W, Argentina). We determined digestive enzyme activities (intestine), energy reserves (liver/muscle), total/standard length, total weight, intestinal coefficient, hepatosomatic index and retroperitoneal fat. Pre-juveniles exhibited amylase, maltase, sucrase, lipase, trypsin and aminopeptidase-N (APN) activities, which were maintained over a wide range of pH and temperature, and exhibited Michaelis-Menten kinetics. In late pre-juveniles, amylase (422 ± 131 μmol maltose min-1 mgprot-1 ), sucrase (86 ± 14 mg glucose min-1 mgprot-1 ), trypsin (84 ± 9 μmoles min-1 mgprot-1 ) and APN (0.58 ± 0.08 μmoles min-1 mgprot-1 ) activities were higher (42%, 28%, 35% and 28%, respectively) than in the early stage. Also, the intestinal coefficient was higher in late (3.04) compared to early (2.06) pre-juveniles. Moreover, the liver appeared to be a main site of glycogen and triglyceride storage in late pre-juveniles, muscle being the site of storage in early pre-juveniles, exhibiting higher glycogen, free glucose and protein concentrations (92%, 82%, 32%, respectively). The results suggest that pre-juveniles of M. liza exhibit an adequate digestive battery to perform complete hydrolysis of various dietary substrates, availability of energy reserves and morphological characteristics to support their feeding habit and growth after recruitment. Our results represent an important contribution to knowledge of the ecology and digestive physiology of pre-juveniles of Mugilidae in the wild.
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Affiliation(s)
- Camila Albanesi
- Instituto de Investigaciones Marinas y Costeras, Universidad Nacional de Mar del Plata CONICET-FCEyN, Mar del Plata, Argentina
| | - Mariano González-Castro
- Instituto de Investigaciones Marinas y Costeras, Universidad Nacional de Mar del Plata CONICET-FCEyN, Mar del Plata, Argentina
| | - Alejandra López-Mañanes
- Instituto de Investigaciones Marinas y Costeras, Universidad Nacional de Mar del Plata CONICET-FCEyN, Mar del Plata, Argentina
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Bianchi SJ, González-Castro M. Reproductive biology of Parona signata (Actinopterygii: Carangidae), a valuable economic resource, in the coastal area of Mar del Plata, Buenos Aires, Argentina. Neotrop ichthyol 2020. [DOI: 10.1590/1982-0224-2019-0133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
ABSTRACT The reproductive biology and life cycle of Parona leatherjacket, Parona signata, present in Mar del Plata (38º 00’S 57º 33’W) coast, was studied. Samples were obtained monthly since January 2018 to February 2019 from the artisanal fishermen and the commercial fleet of Mar del Plata. A histological analysis was carried out and the main biologic-reproductive parameters were estimated: fecundity, oocyte frequency distribution and gonadosomatic index (GSI). Both the macroscopic and microscopic analyses showed reproductive activity in March and November. Mature females were recorded, which showed hydrated oocytes, as was evidenced by the histological procedures. Both, the histological and the oocyte diameter distribution analyses showed the presence of all oocyte maturation stages in ovaries in active-spawning subphase, indicating that P. signata is a multiple spawner with indeterminate annual fecundity. Batch fecundity ranged between 36,426 and 126,035 hydrated oocytes/ female. Relative fecundity ranged between 42 and 150 oocytes/ g female ovary free.
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Affiliation(s)
| | - Mariano González-Castro
- Instituto de Investigaciones Marinas y Costeras, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
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Deli Antoni MY, Delpiani SM, González-Castro M, Blasina GE, Spath MC, Depiani GE, Ashikaga FY, Cruz VP, Oliveira C, de Astarloa JMD. Comparative populational study of Lepidonotothen larseni and L. nudifrons (Teleostei: Nototheniidae) from the Antarctic Peninsula and the South Shetland Islands, Antarctica. Polar Biol 2019. [DOI: 10.1007/s00300-019-02540-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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González-Castro M, Rosso JJ, Delpiani SM, Mabragaña E, Díaz de Astarloa JM. Inferring boundaries among fish species of the new world silversides (Atherinopsidae; genus Odontesthes): new evidences of incipient speciation between marine and brackish populations of Odontesthes argentinensis. Genetica 2019; 147:217-229. [PMID: 31069611 DOI: 10.1007/s10709-019-00066-2] [Citation(s) in RCA: 8] [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: 11/02/2018] [Accepted: 05/02/2019] [Indexed: 11/24/2022]
Abstract
Species of new world silversides (Actinopterygii; Atherinopsidae; genus Odontesthes) possess economic relevance, biological interest and ecological importance. In the present paper we: (A) investigate the molecular diversity in marine species of Odontesthes from the South West Atlantic Ocean (SWAO), and analyse their interspecific relationships and divergence by means of DNA Barcoding, including its freshwater congeners, as well. (B) Explore the suitability of DNA Barcoding to analyse the diversity and distribution of haplotypes in Odontesthes argentinensis, the only well documented marine species from the SWAO that exhibit putative estuarine and marine populations. Molecular analysis revealed 100% of agreement between morphological identification and molecular identity. Odontesthes argentinensis, Odontesthes platensis, Odontesthes smitti, Odontesthes nigricans and Odontesthes incisa were assigned to five different barcode index numbers (BINs). Maximum-likelihood analysis showed that all marine species of Odontesthes clustered separately in a unique monophyletic phylogroup, comprising five well defined haplogroups, with genetic divergence between groups ranging from 2.75 to 7.11%. The genetic analysis including freshwater congeners showed that O. incisa clustered alone occupying a basal position. The Fst pairwise comparisons within O. argentinensis support the existence of three population groups: one conformed by Mar Chiquita Lagoon (MCh) specimens, and the others by Mar del Plata/Mar Chiquita coast and San Blas Bay coastal specimens, respectively. The AMOVA showed significant overall differentiation (Fst = 0.238; p = 0.00001) for the entire data set. The previous/present evidence is discussed, and strongly suggests that incipient speciation is occurring in O. argentinensis argentinean populations, and specimens from MCh would be considered at present as the leading candidate of a marine to freshwater incipient speciation event.
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Affiliation(s)
- Mariano González-Castro
- Grupo de Biotaxonomía Morfológica y Molecular de Peces, Instituto de Investigaciones Marinas y Costeras, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar Del Plata, Argentina. .,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
| | - Juan José Rosso
- Grupo de Biotaxonomía Morfológica y Molecular de Peces, Instituto de Investigaciones Marinas y Costeras, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar Del Plata, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Sergio Matías Delpiani
- Grupo de Biotaxonomía Morfológica y Molecular de Peces, Instituto de Investigaciones Marinas y Costeras, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar Del Plata, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Ezequiel Mabragaña
- Grupo de Biotaxonomía Morfológica y Molecular de Peces, Instituto de Investigaciones Marinas y Costeras, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar Del Plata, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Juan Martín Díaz de Astarloa
- Grupo de Biotaxonomía Morfológica y Molecular de Peces, Instituto de Investigaciones Marinas y Costeras, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar Del Plata, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
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Cardoso YP, Rosso JJ, Mabragaña E, González-Castro M, Delpiani M, Avigliano E, Bogan S, Covain R, Schenone NF, Díaz de Astarloa JM. A continental-wide molecular approach unraveling mtDNA diversity and geographic distribution of the Neotropical genus Hoplias. PLoS One 2018; 13:e0202024. [PMID: 30102742 PMCID: PMC6089427 DOI: 10.1371/journal.pone.0202024] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 07/26/2018] [Indexed: 01/26/2023] Open
Abstract
With an estimate of around 9,000 species, the Neotropical region hosts the greatest diversity of freshwater fishes of the world. Genetic surveys have the potential to unravel isolated and unique lineages and may result in the identification of undescribed species, accelerating the cataloguing of extant biodiversity. In this paper, molecular diversity within the valuable and widespread Neotropical genus Hoplias was assessed by means of DNA Barcoding. The geographic coverage spanned 40 degrees of latitude from French Guiana to Argentina. Our analyses revealed 22 mitochondrial lineages fully supported by means of Barcode Index Number, Automatic Barcode Gap Discovery and phylogenetic analyses. This mtDNA survey revealed the existence of 15 fully supported mitochondrial lineages within the once considered to be the continentally distributed H. malabaricus. Only four of them are currently described as valid species however, leaving 11 mitochondrial lineages currently "masked" within this species complex. Mean genetic divergence was 13.1%. Barcoding gap analysis discriminated 20 out of the 22 lineages tested. Phylogenetic analyses showed that all taxonomically recognized species form monophyletic groups. Hoplias malabaricus sensu stricto clustered within a large clade, excluding the representatives of the La Plata River Basin. In the H. lacerdae group, all species but H. curupira showed a cohesive match between taxonomic and molecular identification. Two different genetic lineages were recovered for H. aimara. Given the unexpected hidden mitochondrial diversity within H. malabaricus, the COI sequence composition of specimens from Suriname (the type locality), identified as H. malabaricus sensu stricto, is of major importance.
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Affiliation(s)
- Yamila P. Cardoso
- Laboratorio de Sistemática y Biología Evolutiva, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Juan J. Rosso
- Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
- Grupo de Biotaxonomía Morfológica y Molecular de Peces, Instituto de Investigaciones Marinas y Costeras, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
- Fundación Bosques Nativos Argentinos para la Biodiversidad, Buenos Aires, Argentina
| | - Ezequiel Mabragaña
- Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
- Grupo de Biotaxonomía Morfológica y Molecular de Peces, Instituto de Investigaciones Marinas y Costeras, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
- Fundación Bosques Nativos Argentinos para la Biodiversidad, Buenos Aires, Argentina
| | - Mariano González-Castro
- Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
- Grupo de Biotaxonomía Morfológica y Molecular de Peces, Instituto de Investigaciones Marinas y Costeras, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
| | - Matías Delpiani
- Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
- Grupo de Biotaxonomía Morfológica y Molecular de Peces, Instituto de Investigaciones Marinas y Costeras, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
| | - Esteban Avigliano
- Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
- Fundación Bosques Nativos Argentinos para la Biodiversidad, Buenos Aires, Argentina
- Instituto de Investigaciones en Producción Animal, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Sergio Bogan
- Fundación de Historia Natural “Félix de Azara”, Departamento de Ciencias Naturales y Antropología, Universidad Maimónides, Buenos Aires, Argentina
| | - Raphael Covain
- Department of Herpetology and Ichthyology, Museum of Natural History, Geneva, Switzerland
| | - Nahuel F. Schenone
- Centro de Investigaciones Antonia Ramos, Villa Bonita, Campo Ramón, Misiones, Argentina
| | - Juan M. Díaz de Astarloa
- Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
- Grupo de Biotaxonomía Morfológica y Molecular de Peces, Instituto de Investigaciones Marinas y Costeras, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
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Castellini DL, González-Castro M, Lopez-Cazorla A, Díaz De Astarloa JM. Abnormalities in flatfishes of the south-west Atlantic Ocean. J Fish Biol 2018; 92:1225-1234. [PMID: 29498052 DOI: 10.1111/jfb.13578] [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: 05/26/2017] [Accepted: 02/02/2018] [Indexed: 06/08/2023]
Abstract
Five adult paralichthyid specimens with various kinds of abnormalities are reported from the south-west Atlantic Ocean. These abnormal flatfish specimens represent the first records of wholly ambicoloured Paralichthys orbignyanus specimens having a deep notch between the eye and dorsal fin and a partially albinistic specimen having skeletal deformities and only the second record of an almost totally ambicoloured specimen. We also report the first observation of reversal in Paralichthys patagonicus and an almost totally ambicoloured, reversed Xystreurys rasile.
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Affiliation(s)
- D L Castellini
- Laboratorio de Biotaxonomía Morfológica y Molecular de Peces (BIMOPE), Instituto de Investigaciones Marinas y Costeras (IIMyC)-CONICET, Universidad Nacional de Mar del Plata (UNMdP), Funes 3350, B7602AYL Mar del Plata, Argentina
| | - M González-Castro
- Laboratorio de Biotaxonomía Morfológica y Molecular de Peces (BIMOPE), Instituto de Investigaciones Marinas y Costeras (IIMyC)-CONICET, Universidad Nacional de Mar del Plata (UNMdP), Funes 3350, B7602AYL Mar del Plata, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avenida Rivadavia 1917, C1033AAJ CABA, Argentina
| | - A Lopez-Cazorla
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avenida Rivadavia 1917, C1033AAJ CABA, Argentina
- Laboratorio de Vertebrados, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, Bahía Blanca, Argentina
| | - J M Díaz De Astarloa
- Laboratorio de Biotaxonomía Morfológica y Molecular de Peces (BIMOPE), Instituto de Investigaciones Marinas y Costeras (IIMyC)-CONICET, Universidad Nacional de Mar del Plata (UNMdP), Funes 3350, B7602AYL Mar del Plata, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avenida Rivadavia 1917, C1033AAJ CABA, Argentina
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Hughes LC, Somoza GM, Nguyen BN, Bernot JP, González-Castro M, Díaz de Astarloa JM, Ortí G. Transcriptomic differentiation underlying marine-to-freshwater transitions in the South American silversides Odontesthes argentinensis and O. bonariensis (Atheriniformes). Ecol Evol 2017; 7:5258-5268. [PMID: 28770064 PMCID: PMC5528240 DOI: 10.1002/ece3.3133] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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: 04/26/2017] [Revised: 04/28/2017] [Accepted: 05/03/2017] [Indexed: 12/22/2022] Open
Abstract
Salinity gradients are critical habitat determinants for freshwater organisms. Silverside fishes in the genus Odontesthes have recently and repeatedly transitioned from marine to freshwater habitats, overcoming a strong ecological barrier. Genomic and transcriptomic changes involved in this kind of transition are only known for a few model species. We present new data and analyses of gene expression and microbiome composition in the gills of two closely related silverside species, marine O. argentinensis and freshwater O. bonariensis and find more than three thousand transcripts differentially expressed, with osmoregulatory/ion transport genes and immune genes showing very different expression patterns across species. Interspecific differences also involve more than one thousand transcripts with nonsynonymous SNPs in the coding sequences, most of which were not differentially expressed. In addition to characterizing gill transcriptomes from wild‐caught marine and freshwater fishes, we test experimentally the response to salinity increases by O. bonariensis collected from freshwater habitats. Patterns of expression in gill transcriptomes of O. bonariensis exposed to high salinity do not resemble O. argentinensis mRNA expression, suggesting lack of plasticity for adaptation to marine conditions in this species. The diversity of functions associated with both the differentially expressed set of transcripts and those with sequence divergence plus marked microbiome differences suggest that multiple abiotic and biotic factors in marine and freshwater habitats are driving transcriptomic differences between these species.
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Affiliation(s)
- Lily C Hughes
- Department of Biological Sciences The George Washington University Washington DC USA
| | - Gustavo M Somoza
- Instituto de Investigaciones Biotecnológicas-Instituto Tecnológico de Chascomús (CONICET-UNSAM) Chascomús Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Buenos Aires Argentina
| | - Bryan N Nguyen
- Department of Biological Sciences The George Washington University Washington DC USA.,Computational Biology Institute The George Washington University Washington DC USA
| | - James P Bernot
- Computational Biology Institute The George Washington University Washington DC USA.,Institute for Biomedical Sciences The George Washington University Washington DC USA
| | - Mariano González-Castro
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Buenos Aires Argentina.,Grupo de Biotaxonomía Morfológica y molecular de peces IIMyC-CONICET Universidad Nacional de Mar del PlataMar del Plata Argentina
| | - Juan Martín Díaz de Astarloa
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Buenos Aires Argentina.,Grupo de Biotaxonomía Morfológica y molecular de peces IIMyC-CONICET Universidad Nacional de Mar del PlataMar del Plata Argentina
| | - Guillermo Ortí
- Department of Biological Sciences The George Washington University Washington DC USA
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Lajud NA, Astarloa JMDD, González-Castro M. Reproduction of Brevoortia aurea (Spix & Agassiz, 1829) (Actinopterygii: Clupeidae) in the Mar Chiquita Coastal Lagoon, Buenos Aires, Argentina. Neotrop ichthyol 2016. [DOI: 10.1590/1982-0224-20150064] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ABSTRACT Reproductive biology of the Brazilian menhaden, Brevoortia aurea (Clupeiformes), was studied in Mar Chiquita Coastal Lagoon. Its abundance was analysed in relation to environmental variables, and the main biological-reproductive parameters were estimated: size at first maturity, batch and relative fecundity, frequency distribution of oocyte diameters and gonadosomatic index (GSI). Moreover, its reproductive cycle was analysed histologically. Samples were collected from May 2012 to April 2013. Once the spawning period was detected, extra samples were added (October and November 2013). The specimens were caught with gillnets, at a distance of 2,300 meters from the mouth of the lagoon. The highest abundances were observed in the months of October and November. Both macroscopic and microscopic analysis allowed to confirm that in these months the saraca spawn in the mixo-eurihaline area of the lagoon. Females were recorded in the five phases of ovarian development. Histological and frequency distribution of oocyte diameters characterized this species as a batch spawner with undetermined fecundity. The fecundity varied between 19,900 and 178,508 oocytes/female. Relative fecundity ranged between 41 and 381 oocytes/g female ovary free. The size at first maturity was estimated on 277 and 265 mm total length for females and males, respectively.
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González-Castro M, Rosso JJ, Mabragaña E, Díaz de Astarloa JM. Surfing among species, populations and morphotypes: Inferring boundaries between two species of new world silversides (Atherinopsidae). C R Biol 2015; 339:10-23. [PMID: 26705969 DOI: 10.1016/j.crvi.2015.11.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [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: 10/10/2015] [Revised: 11/17/2015] [Accepted: 11/18/2015] [Indexed: 11/16/2022]
Abstract
Atherinopsidae are widespread freshwater and shallow marine fish with singular economic importance. Morphological, genetical and life cycles differences between marine and estuarine populations were already reported in this family, suggesting ongoing speciation. Also, coexistence and interbreeding between closely related species were documented. The aim of this study was to infer boundaries among: (A) Odontesthes bonariensis and O. argentinensis at species level, and intermediate morphs; (B) the population of O. argentinensis of Mar Chiquita Lagoon and its marine conspecifics. To achieve this, we integrated, meristic, Geometrics Morphometrics and DNA Barcode approaches. Four groups were discriminated and subsequently characterized according to their morphological traits, shape and meristic characters. No shared haplotypes between O. bonariensis and O. argentinensis were found. Significative-meristic and body shape differences between the Mar Chiquita and marine individuals of O. argentinensis were found, suggesting they behave as well differentiated populations, or even incipient ecological species. The fact that the Odontesthes morphotypes shared haplotypes with both, O. argentinensis and O. bonariensis, but also possess meristic and morphometric distinctive traits open new questions related to the origin of this morphogroup.
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Affiliation(s)
- Mariano González-Castro
- Grupo de Biotaxonomía Morfológica y molecular de peces, IIMyC-CONICET, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
| | - Juan José Rosso
- Grupo de Biotaxonomía Morfológica y molecular de peces, IIMyC-CONICET, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Ezequiel Mabragaña
- Grupo de Biotaxonomía Morfológica y molecular de peces, IIMyC-CONICET, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Juan Martín Díaz de Astarloa
- Grupo de Biotaxonomía Morfológica y molecular de peces, IIMyC-CONICET, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
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Deli Antoni MY, González-Castro M, Díaz de Astarloa JM. New tools (DNA barcoding), old hypothesis: the case of the taxonomic identity of the Argentine hakes (Actinopterygii: Merluccius). J Fish Biol 2015; 87:783-793. [PMID: 26239394 DOI: 10.1111/jfb.12745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 02/02/2015] [Accepted: 06/11/2015] [Indexed: 06/04/2023]
Abstract
The present study evaluated the possible occurrence of cryptic species among Merluccidae from Argentina by examining sequences of cytochrome c oxidase subunit I (coI) mtDNA. This approach can discriminate Merluccius hubbsi and Merluccius australis; specimens with morphological diagnostic characters of Merluccius patagonicus formed a cohesive cluster with M. hubbsi specimens. BIN analysis confirmed the effectiveness of barcoding within a global context.
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Affiliation(s)
- M Y Deli Antoni
- Grupo de Biotaxonomía Morfológica y Molecular de Peces (BIMOPE), Instituto de Investigaciones Marinas y Costeras (IIMyC, CONICET-UNMdP), Funes 3350, Mar del Plata 7600, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, CABA C1033AAJ Buenos Aires, Argentina
| | - M González-Castro
- Grupo de Biotaxonomía Morfológica y Molecular de Peces (BIMOPE), Instituto de Investigaciones Marinas y Costeras (IIMyC, CONICET-UNMdP), Funes 3350, Mar del Plata 7600, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, CABA C1033AAJ Buenos Aires, Argentina
| | - J M Díaz de Astarloa
- Grupo de Biotaxonomía Morfológica y Molecular de Peces (BIMOPE), Instituto de Investigaciones Marinas y Costeras (IIMyC, CONICET-UNMdP), Funes 3350, Mar del Plata 7600, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, CABA C1033AAJ Buenos Aires, Argentina
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López S, Mabragaña E, Astarloa JMDD, González-Castro M. Reproductive studies of Anchoa marinii Hildebrand, 1943 (Actinopterygii: Engraulidae) in the nearby-coastal area of Mar Chiquita coastal lagoon, Buenos Aires, Argentina. Neotrop ichthyol 2015. [DOI: 10.1590/1982-0224-20140083] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aim of the present study provides the first results on the reproductive biology of the anchovy, Anchoa marinii, in a nearby-coastal area of Mar Chiquita coastal lagoon, 37º32'00"S 57º19'00"W, Argentina. To perform this, we employed mainly female gonads, at both microscopic and macroscopic levels. The oocyte diameter distribution and the microscopy analysis of oocytes, showed different batches of growing oocytes, suggesting that the anchovy is a multiple spawner, with constant oocytes recruitment all over the reproductive season. The batch fecundity ranged between 749 and 3,207 oocytes for females, and the relative fecundity ranged from 127 to 422 yolked oocytes per female gram (ovary free). The fecundity estimation has been made with yolked oocytes. No correlation between the fecundity estimation and female size and total weight (without ovary) has been found. The estimated L50 values were 74.13 and 73.76 mm TL for females and males, respectively. Shoals of females in advanced maturity phase were recorded, between December to April in the study area. During this period a significant increase of species abundance was correlated with water temperature increase (above 16°C). This fact, together with the detection of post-ovulatory follicles, indicated the existence of reproductive events in the nearby-coastal area of Mar Chiquita coastal lagoon.
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Affiliation(s)
- Sofía López
- Instituto de Investigaciones Marinas y Costeras,
| | - Ezequiel Mabragaña
- Instituto de Investigaciones Marinas y Costeras, ; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
| | - Juan Martín Díaz de Astarloa
- Instituto de Investigaciones Marinas y Costeras, ; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
| | - Mariano González-Castro
- Instituto de Investigaciones Marinas y Costeras, ; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
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González-Castro M, Macchi GJ, Cousseau MB. Studies on reproduction of the mulletMugil platanusGünther, 1880 (Actinopterygii, Mugilidae) from the Mar Chiquita coastal lagoon, Argentina: Similarities and differences with related species. ACTA ACUST UNITED AC 2011. [DOI: 10.1080/11250003.2010.549154] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ibáñez AL, González-Castro M, Pacheco-Almanzar E. First record of Mugil hospes in the Gulf of Mexico and its identification from Mugil curema using ctenii. J Fish Biol 2011; 78:386-390. [PMID: 21235571 DOI: 10.1111/j.1095-8649.2010.02863.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
This study gives the first record of Mugil hospes distributed in the Gulf of Mexico. This species previously has been confused with its congener Mugil curema and can be easily differentiated by the shape of the ctenii on their scales.
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Affiliation(s)
- A L Ibáñez
- Universidad Autónoma Metropolitana-Iztapalapa Departamento de Hidrobiología, Av. San Rafael Atlixco 186, Col. Vicentina, México D.F. 09340, México.
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