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Huysseune A, Witten PE. Continuous tooth replacement: what can teleost fish teach us? Biol Rev Camb Philos Soc 2024; 99:797-819. [PMID: 38151229 DOI: 10.1111/brv.13045] [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: 01/11/2023] [Revised: 12/13/2023] [Accepted: 12/15/2023] [Indexed: 12/29/2023]
Abstract
Most tooth-bearing non-mammalian vertebrates have the capacity to replace their teeth throughout life. This capacity was lost in mammals, which replace their teeth only once at most. Not surprisingly, continuous tooth replacement has attracted much attention. Classical morphological studies (e.g. to analyse patterns of replacement) are now being complemented by molecular studies that investigate the expression of genes involved in tooth formation. This review focuses on ray-finned fish (actinopterygians), which have teeth often distributed throughout the mouth and pharynx, and more specifically on teleost fish, the largest group of extant vertebrates. First we highlight the diversity in tooth distribution and in tooth replacement patterns. Replacement tooth formation can start from a distinct (usually discontinuous and transient) dental lamina, but also in the absence of a successional lamina, e.g. from the surface epithelium of the oropharynx or from the outer dental epithelium of a predecessor tooth. The relationship of a replacement tooth to its predecessor is closely related to whether replacement is the result of a prepattern or occurs on demand. As replacement teeth do not necessarily have the same molecular signature as first-generation teeth, the question of the actual trigger for tooth replacement is discussed. Much emphasis has been laid in the past on the potential role of epithelial stem cells in initiating tooth replacement. The outcome of such studies has been equivocal, possibly related to the taxa investigated, and the permanent or transient nature of the dental lamina. Alternatively, replacement may result from local proliferation of undifferentiated progenitors, stimulated by hitherto unknown, perhaps mesenchymal, factors. So far, the role of the neurovascular link in continuous tooth replacement has been poorly investigated, despite the presence of a rich vascularisation surrounding actinopterygian (as well as chondrichthyan) teeth and despite a complete arrest of tooth replacement after nerve resection. Lastly, tooth replacement is possibly co-opted as a process to expand the number of teeth in a dentition ontogenetically whilst conserving features of the primary dentition. That neither a dental lamina, nor stem cells appear to be required for tooth replacement places teleosts in an advantageous position as models for tooth regeneration in humans, where the dental lamina regresses and epithelial stem cells are considered lost.
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Affiliation(s)
- Ann Huysseune
- Research Group Evolutionary Developmental Biology, Biology Department, Ghent University, K.L. Ledeganckstraat 35, Ghent, B-9000, Belgium
- Department of Zoology, Faculty of Science, Charles University, Vinicna 7, Prague, 128 44, Czech Republic
| | - P Eckhard Witten
- Research Group Evolutionary Developmental Biology, Biology Department, Ghent University, K.L. Ledeganckstraat 35, Ghent, B-9000, Belgium
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Ricker B, Castellanos Franco EA, de los Campos G, Pelled G, Gilad AA. A conserved phenylalanine motif among Teleost fish provides insight for improving electromagnetic perception. bioRxiv 2024:2024.04.04.588096. [PMID: 38617371 PMCID: PMC11014636 DOI: 10.1101/2024.04.04.588096] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
Magnetoreceptive biology as a field remains relatively obscure; compared to the breadth of species believed to sense magnetic fields, it remains under-studied. Here, we present grounds for the expansion of magnetoreception studies among Teleosts. We begin with the electromagnetic perceptive gene (EPG) from Kryptopterus vitreolus and expand to identify 72 Teleosts with homologous proteins containing a conserved three-phenylalanine (3F) motif. Phylogenetic analysis provides insight as to how EPG may have evolved over time, and indicates that certain clades may have experienced a loss of function driven by different fitness pressures. One potential factor is water type with freshwater fish significantly more likely to possess the functional motif version (FFF), and saltwater fish to have the non-functional variant (FXF). It was also revealed that when the 3F motif from the homolog of Brachyhypopomus gauderio (B.g.) is inserted into EPG - EPG(B.g.) - the response (as indicated by increased intracellular calcium) is faster. This indicates that EPG has the potential to be engineered to improve upon its response and increase its utility to be used as a controller for specific outcomes.
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Affiliation(s)
- Brianna Ricker
- Department of Chemical Engineering and Materials Sciences, Michigan State University, East Lansing MI, USA
| | | | - Gustavo de los Campos
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing MI, USA
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing MI, USA
- Department of Statistics and Probability, Michigan State University, East Lansing MI, USA
| | - Galit Pelled
- Department of Mechanical Engineering, Michigan State University, East Lansing MI, USA
- Department of Radiology, Michigan State University, East Lansing, MI, USA
| | - Assaf A. Gilad
- Department of Chemical Engineering and Materials Sciences, Michigan State University, East Lansing MI, USA
- Department of Radiology, Michigan State University, East Lansing, MI, USA
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Azambuja M, Nogaroto V, Moreira-Filho O, Vicari MR. U2 and U4 snDNA Comparative Chromosomal Mapping in the Neotropical Fish Genera Apareiodon and Parodon (Characiformes: Parodontidae). Zebrafish 2023; 20:221-228. [PMID: 37797225 DOI: 10.1089/zeb.2023.0025] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023] Open
Abstract
Small nuclear DNA (snDNA) are valuable cytogenetic markers for comparative studies in chromosome evolution because different distribution patterns were found among species. Parodontidae, a Neotropical fish family, is known to have female heterogametic sex chromosome systems in some species. The U2 and U4 snDNA sites have been found to be involved in Z and W chromosome differentiation in Apareiodon sp., Apareiodon affinis, and Parodon hilarii. However, few studies have evaluated snDNA sites as propulsors of chromosome diversification among closely related fish species. In this study, we investigated the distribution of U2 and U4 snDNA clusters in the chromosomes of 10 populations/species belonging to Apareiodon and Parodon, aiming to identify chromosomal homeologies or diversification. In situ localization data revealed a submetacentric pair carrying the U2 snDNA site among the populations/species analyzed. Furthermore, all studied species demonstrated homeology in the location of U4 snDNA cluster in the proximal region of metacentric pair 1, besides an additional signal showing up with a divergence in Apareiodon. Comparative chromosomal mapping of U4 snDNA also helped to reinforce the proposal of the ZZ/ZW1W2 sex chromosome system origin in an A. affinis population. According to cytogenetic data, the study corroborates the diversification in Parodontidae paired species with uncertain taxonomy.
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Affiliation(s)
- Matheus Azambuja
- Programa de Pós-Graduação em Genética, Universidade Federal do Paraná, Curitiba, Brazil
| | - Viviane Nogaroto
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
| | - Orlando Moreira-Filho
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, Brazil
| | - Marcelo Ricardo Vicari
- Programa de Pós-Graduação em Genética, Universidade Federal do Paraná, Curitiba, Brazil
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
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Flores AM, Christensen KA, Campbell B, Koop BF, Taylor JS. Sablefish (Anoplopoma fimbria) chromosome-level genome assembly. G3 (Bethesda) 2023:7141347. [PMID: 37097026 DOI: 10.1093/g3journal/jkad089] [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] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/27/2023] [Accepted: 04/21/2023] [Indexed: 04/26/2023]
Abstract
Sablefish (Anoplopoma fimbria) are in the suborder Cottioidei, which also includes stickleback and lumpfish. This species inhabits coastal regions of the northeastern and northwestern Pacific Ocean from California to Japan. A commercial fishery for sablefish began to flourish in the 1960s, though a downward trend in stock biomass and landings has been observed since 2010. Aquaculture protocols have been developed for sablefish; eggs and sperm from wild-caught and hatchery-reared captive broodstock are used to generate offspring that reach market size in about two years. Parentage analyses show that survival in aquaculture varies among families. Growth rate and disease resistance also vary among individuals and cohorts, but the extent to which genetics and the environment contribute to this variation is unclear. The sablefish genome assembly reported here will form the foundation for SNP-based surveys designed to detect genetic markers associated with survival, growth rate, and pathogen resistance. Beyond its contribution to sablefish domestication, the sablefish genome can be a resource for the management of the wild sablefish fishery. The assembly generated in this study had a length of 653 Mbp, a scaffold N50 of 26.74 Mbp, a contig N50 of 2.57 Mbp, and contained more than 98% of the 3640 Actinopterygii core genes. We placed 620.9 Mbp (95% of the total) onto 24 chromosomes using a genetic map derived from six full-sib families and Hi-C contact data.
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Affiliation(s)
- Anne-Marie Flores
- Department of Biology, University of Victoria, 3800 Finnerty Road, Victoria, British Columbia, V8W 2Y2, Canada
| | - Kris A Christensen
- Department of Biology, University of Victoria, 3800 Finnerty Road, Victoria, British Columbia, V8W 2Y2, Canada
| | - Briony Campbell
- Golden Eagle Sablefish, 335 Walkers Hood Rd, Salt Spring Island, British Columbia, V8K 1N7, Canada
| | - Ben F Koop
- Department of Biology, University of Victoria, 3800 Finnerty Road, Victoria, British Columbia, V8W 2Y2, Canada
| | - John S Taylor
- Department of Biology, University of Victoria, 3800 Finnerty Road, Victoria, British Columbia, V8W 2Y2, Canada
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Melo RMC, Nunes DMF, Moreira DP, Weber AA, Bazzoli N, Rizzo E. Comparative reproductive biology of two sympatric Hypostomus in a Neotropical river. ZOOLOGY 2023; 156:126065. [PMID: 36502738 DOI: 10.1016/j.zool.2022.126065] [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: 05/24/2022] [Revised: 11/29/2022] [Accepted: 12/03/2022] [Indexed: 12/12/2022]
Abstract
Congeneric species often coexist in sympatry using behavioral and morphological adaptations to reduce competition and interspecific interference, but reproductive patterns behind coexistence remain unknown. We analyzed the gonadal morphology and development, reproductive cycle, and population structure of two sympatric congeneric fishes to evaluate the degree of overlap and differentiation of the reproductive biology between species in a Neotropical river. Development of testes and ovaries were similar between species, both showing asynchronous gonadal development, large diameter of gametes and synthesis of mucosubstances by follicle cells to form adhesive eggs. Although the morphometry of germ cells did not present differences, the zona radiata of mature eggs in Hypostomus garmani was markedly thicker than H. francisci, which suggests different spawning habitats. Both species have greater reproductive activity in the rainy season, concomitant with increase in water temperature, however H. garmani initiates and ends its reproduction earlier than H. francisci, indicating a differentiation of reproductive periods. Sexually mature males and females of H. francisci reproduced at a larger mean size then H. garmani. The two congeneric species had a similar abundance and sex ratios in the study area. Results show that although the species exhibited broad overlap of reproductive traits, a spatial and temporal differentiation of the reproductive biology was present. This study contributes to understanding reproductive mechanisms that may facilitate coexistence between congeneric sympatric species.
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Affiliation(s)
- Rafael Magno Costa Melo
- Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
| | - Diego Mendes Ferreira Nunes
- Graduate Program in Vertebrate Biology, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Davidson Peruci Moreira
- Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - André Alberto Weber
- Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Nilo Bazzoli
- Graduate Program in Vertebrate Biology, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Elizete Rizzo
- Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Shepherd B, Pinheiro HT, Phelps TAY, Siu G, Rocha LA. Terelabrus toretore sp. nov. (Perciformes: Labridae), a New Species of Striped Hogfish from Tahiti, with Range Extensions for Two Congeners. Zool Stud 2023; 62:e8. [PMID: 37168710 PMCID: PMC10165348 DOI: 10.6620/zs.2023.62-08] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 12/14/2022] [Indexed: 05/13/2023]
Abstract
A new labrid fish, Terelabrus toretore sp. nov., the fifth species within the genus, is herein described from two specimens collected at a depth of 140 m from a mesophotic coral ecosystem in Tahiti, French Polynesia. Terelabrus toretore sp. nov. is characterized by having 43-44 scaled rows in longitudinal series; 42 pored lateral-line scales; 5+10 gill rakers; 10 scale rows below the lateral line; 8 posterior branches on the main supratemporal sensory canal; a relatively long snout (snout length 9.6-9.7% SL), and a coloration consisting of a yellow caudal fin and a wide, red, mid-lateral stripe with no blotching, the space above which is white anteriorly, becoming predominantly yellow from beneath the dorsal fin to the caudal peduncle. In addition to describing this new species, we document the first record of Terelabrus rubrovittatus from the Republic of Marshall Islands, and the first record of Terelabrus zonalis from Australia, along with the first description of its coloration. We present a molecular phylogeny of the genus based upon mitochondrial cytochrome c oxidase subunit I (COI) DNA sequences.
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Affiliation(s)
- Bart Shepherd
- Steinhart Aquarium, California Academy of Sciences, San Francisco, CA 94118, USA. E-mail: (Shepherd)
| | - Hudson T Pinheiro
- Department of Ichthyology, California Academy of Sciences, San Francisco, CA 94118, USA. E-mail: (Pinheiro); (Phelps); (Rocha)
- Center for Marine Biology, University of São Paulo, São Sebastião, SP 11612-109, Brazil
| | - Tyler A Y Phelps
- Department of Ichthyology, California Academy of Sciences, San Francisco, CA 94118, USA. E-mail: (Pinheiro); (Phelps); (Rocha)
| | - Gilles Siu
- PSL Research University, EPHE-UPVD-CNRS, USR 3278 CRIOBE, Laboratoire d'Excellence "Corail", BP 1013, 98729 Papetoai, Moorea, French Polynesia. E-mail: (Siu)
| | - Luiz A Rocha
- Department of Ichthyology, California Academy of Sciences, San Francisco, CA 94118, USA. E-mail: (Pinheiro); (Phelps); (Rocha)
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7
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Kubicek KM, Britz R, Pinion AK, Bower LM, Conway KW. Three scleral ossicles in the West African Denticle herring Denticeps clupeoides (Clupeiformes: Denticipitidae). J Fish Biol 2022; 100:852-855. [PMID: 35038175 DOI: 10.1111/jfb.14996] [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: 09/09/2021] [Revised: 12/17/2021] [Accepted: 01/12/2022] [Indexed: 06/14/2023]
Abstract
The eyes of teleostean fishes typically exhibit two ossifications, the anterior and posterior sclerotics, both associated with the scleral cartilage. The West African Denticle herring Denticeps clupeoides has three scleral ossifications, including the typical two associated with the scleral cartilage (anterior and posterior sclerotic) and a third ossification (Di Dario's ossicle), spatially separated from the scleral cartilage and located within the anteromedial wall of the sclera. The medial rectus muscle inserts on the medial surface of Di Dario's ossicle, suggesting that this third sclerotic may play a role in forward rotation of the eye in this surface feeding fish.
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Affiliation(s)
- Kole M Kubicek
- Department of Ecology and Conservation Biology and Biodiversity Research and Teaching Collections, Texas A&M University, College Station, Texas, USA
| | - Ralf Britz
- Senckenberg Natural History Collections Dresden, Museum of Zoology, Dresden, Germany
| | - Amanda K Pinion
- Department of Ecology and Conservation Biology and Biodiversity Research and Teaching Collections, Texas A&M University, College Station, Texas, USA
| | - Luke M Bower
- U.S. Geological Survey, South Carolina Cooperative Fish and Wildlife Research Unit and Department of Forestry and Environmental Conservation, Clemson University, Clemson, South Carolina, USA
| | - Kevin W Conway
- Department of Ecology and Conservation Biology and Biodiversity Research and Teaching Collections, Texas A&M University, College Station, Texas, USA
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8
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Thieme P, Schnell NK, Parkinson K, Moritz T. Morphological characters in light of new molecular phylogenies: the caudal-fin skeleton of Ovalentaria. R Soc Open Sci 2022; 9:211605. [PMID: 35242353 PMCID: PMC8753169 DOI: 10.1098/rsos.211605] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 12/06/2021] [Indexed: 05/03/2023]
Abstract
The Ovalentaria is a taxon of teleosts that has been proposed based on molecular analyses only. Previously widely separated families are assembled in this taxon. For the first time, the Ovalentaria are analysed using a comparative morphological approach. The caudal-fin skeleton of 355 species covering all 48 ovalentarian families are examined in cleared and stained specimens, µCT datasets and X-ray images as well as from the literature. A total of 38 morphological characters are evaluated and used for ancestral character state reconstructions and phylogenetic analyses. Results provide hypotheses for a scenario of the evolution of the caudal-fin skeleton and its ground plan in Ovalentaria. An evolutionary trend towards the reduction of skeletal elements in the caudal fin is observed. Connections between the evolution of the caudal-fin skeleton and modes of locomotion found in ovalentarian taxa are discussed. Phylogenetic analyses based on the caudal-fin morphology provide topologies for intra-ovalentarian relationships that largely agree with molecular hypotheses.
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Affiliation(s)
- Philipp Thieme
- Deutsches Meeresmuseum, Katharinenberg 14-20, 18439 Stralsund, Germany
- Institute of Zoology and Evolutionary Research, Friedrich-Schiller-University Jena, Ebertstrasse 1, 07743 Jena, Germany
| | - Nalani K. Schnell
- Institut Systématique Evolution Biodiversité (ISYEB), Muséum national d'Histoire naturelle, CNRS, Sorbonne Université, EPHE, Station Marine de Concarneau, Place de la Croix, 29900 Concarneau, France
| | - Kerryn Parkinson
- Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney, New South Wales 2010, Australia
| | - Timo Moritz
- Deutsches Meeresmuseum, Katharinenberg 14-20, 18439 Stralsund, Germany
- Institute of Biological Sciences, University of Rostock, Albert-Einstein-Strasse 3, 18059 Rostock, Germany
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Stornioli JHF, Goes CAG, Calegari RM, Dos Santos RZ, Giglio LM, Foresti F, Oliveira C, Penitente M, Porto-Foresti F, Utsunomia R. The B Chromosomes of Prochilodus lineatus ( Teleostei, Characiformes) Are Highly Enriched in Satellite DNAs. Cells 2021; 10:1527. [PMID: 34204462 DOI: 10.3390/cells10061527] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/07/2021] [Accepted: 06/11/2021] [Indexed: 12/18/2022] Open
Abstract
B or supernumerary chromosomes are dispensable elements that are widely present in numerous eukaryotes. Due to their non-recombining nature, there is an evident tendency for repetitive DNA accumulation in these elements. Thus, satellite DNA plays an important role in the evolution and diversification of B chromosomes and can provide clues regarding their origin. The characiform Prochilodus lineatus was one of the first discovered fish species bearing B chromosomes, with all populations analyzed so far showing one to nine micro-B chromosomes and exhibiting at least three morphological variants (Ba, Bsm, and Bm). To date, a single satellite DNA is known to be located on the B chromosomes of this species, but no information regarding the differentiation of the proposed B-types is available. Here, we characterized the satellitome of P. lineatus and mapped 35 satellite DNAs against the chromosomes of P. lineatus, of which six were equally located on all B-types and this indicates a similar genomic content. In addition, we describe, for the first time, an entire population without B chromosomes.
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Mille T, Bisch A, Caill-Milly N, Cresson P, Deborde J, Gueux A, Morandeau G, Monperrus M. Distribution of mercury species in different tissues and trophic levels of commonly consumed fish species from the south Bay of Biscay (France). Mar Pollut Bull 2021; 166:112172. [PMID: 33631695 DOI: 10.1016/j.marpolbul.2021.112172] [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: 04/27/2020] [Revised: 02/09/2021] [Accepted: 02/10/2021] [Indexed: 06/12/2023]
Abstract
Mercury (Hg) is a contaminant of global concern in marine ecosystems, notably due to its ability to accumulate and concentrate in food webs. Concentrations of total mercury (THg), methylmercury (MeHg) and inorganic mercury (IHg) were assessed and compared in different tissues (liver, muscle, and gonads) of three common fish species (hake Merluccius merluccius, red mullet Mullus surmuletus, and sole Solea solea) from the continental shelf from the southern part of the Bay of Biscay. Several studies investigated Hg concentration in fish muscle, but few assessed concentrations in other organs, despite the importance of such data to understand contaminant organotropism and metabolization. Results showed that trophic position and feeding habitat are required to understand the variability of Hg concentration in muscle between fish species. In addition, high MeHg/THg ratio in muscle could be explained by the predatory behavior of the studied fish species and the biomagnification of this Hg species within the food web, MeHg. Despite differences between species, Hg concentration was always higher in muscle (from 118 ± 64 to 338 ± 101 ng g-1 w.w.) and liver (from 122 ± 108 to 271 ± 95 ng g-1 w.w.). These results can be related to physiological processes especially the MeHg detoxification strategies.
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Affiliation(s)
- Tiphaine Mille
- Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM-MIRA, UMR 5254, 64600 Anglet, France
| | - Amaëlle Bisch
- Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM-MIRA, UMR 5254, 64600 Anglet, France
| | - Nathalie Caill-Milly
- Ifremer, LITTORAL, Laboratoire Environnement Ressources d'Arcachon, 64600 Anglet, France
| | - Pierre Cresson
- Ifremer, Centre Manche Mer du Nord, Laboratoire Ressources Halieutiques Manche Mer du Nord, 150 quai Gambetta, 62200 Boulogne sur Mer, France
| | - Jonathan Deborde
- Ifremer, LITTORAL, Laboratoire Environnement et Ressources des Pertuis Charentais (LER/PC), BP133, 17390 La Tremblade, France
| | - Aurore Gueux
- Ifremer, LITTORAL, Laboratoire Environnement et Ressources des Pertuis Charentais (LER/PC), BP133, 17390 La Tremblade, France
| | - Gilles Morandeau
- Ifremer, LITTORAL, Laboratoire Environnement Ressources d'Arcachon, 64600 Anglet, France
| | - Mathilde Monperrus
- Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM-MIRA, UMR 5254, 64600 Anglet, France.
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11
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Rojo M, Cristos D, González P, López-Aca V, Dománico A, Carriquiriborde P. Accumulation of human pharmaceuticals and activity of biotransformation enzymes in fish from two areas of the lower Rio de la Plata Basin. Chemosphere 2021; 266:129012. [PMID: 33272666 DOI: 10.1016/j.chemosphere.2020.129012] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 07/30/2020] [Revised: 11/02/2020] [Accepted: 11/15/2020] [Indexed: 06/12/2023]
Abstract
The accumulation of four human pharmaceuticals active compounds (HPhAC) in the muscle of four fish species of the Rio de la Plata Basin were assessed regarding the compound logP and pKa, and fish trophic levels. For Prochilodus lineatus, accumulation was compared to hepatic biotransformation enzymes and fish from two sampling areas with different urbanization degree. Species were the detritivore Prochilodus lineatus, the omnivores Megaleporinus obtusidens and Pimelodus maculatus, and the piscivorous Salminus brasiliensis. Sampling areas were the Inner Rio de la Plata Estuary (RLP), in front of the Buenos Aires Metropolitan Area, and at the Lower Uruguay River (URU), a relatively unpopulated area. Carbamazepine, atenolol, enalapril, and sildenafil concentrations in fish muscle were analyzed by HPLC-MS. EROD, BROD, and GST activities were measured in P. lineatus liver. Average (maximum) concentrations and detection frequency were: Atenolol 24.4 (69.4) μg kg-1, 60%; carbamazepine 5.5 (45.8) μg kg-1, 19%; enalapril 7.0 (56.9) μg kg-1, 28%; sildenafil 17.1 (71.6) μg kg-1, 56%. Enalapril and sildenafil detection in fish was first-time reported. Atenolol and carbamazepine concentrations were positively correlated. No correlation was observed between HPhAC accumulation and logP or pKa. A potential biomagnification trend was observed for atenolol, showing higher accumulation in S. brasiliensis. HPhACs accumulation was higher for P. lineatus collected at URU, but GST and BROD were significantly higher for individuals sampled at RLP and were positively correlated. A significant negative correlation was observed for enalapril and BROD. The study contributes to the knowledge of the accumulation of HPhACs in fish.
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Affiliation(s)
- M Rojo
- Centro de Investigaciones del Medioambiente (CIM), Facultad de Ciencias Exactas, Universidad Nacional de La Plata-CONICET, Argentina
| | - D Cristos
- Instituto Nacional de Tecnología Agropecuaria, Centro de Investigación de Agroindustria (CIA-INTA), Argentina
| | - P González
- Centro de Investigaciones del Medioambiente (CIM), Facultad de Ciencias Exactas, Universidad Nacional de La Plata-CONICET, Argentina
| | - V López-Aca
- Centro de Investigaciones del Medioambiente (CIM), Facultad de Ciencias Exactas, Universidad Nacional de La Plata-CONICET, Argentina
| | - A Dománico
- Dirección de Pesca Continental- Subsecretaría de Pesca y Acuicultura de La Nación, Argentina; Comisión de Investigaciones Científicas de La Provincia de Buenos Aires (CIC), Argentina; Comisión Administradora Del Río Uruguay (CARU), Argentina
| | - P Carriquiriborde
- Centro de Investigaciones del Medioambiente (CIM), Facultad de Ciencias Exactas, Universidad Nacional de La Plata-CONICET, Argentina; Comisión Administradora Del Río Uruguay (CARU), Argentina.
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12
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Pozzobon APB, Gonçalves PR, Anderson JD, Rocha LA, Díaz de Astarloa JM, Di Dario F. Phylogenetic relationships, genetic diversity and biogeography of menhadens, genus Brevoortia (Clupeiformes, Clupeidae). Mol Phylogenet Evol 2021; 160:107108. [PMID: 33631353 DOI: 10.1016/j.ympev.2021.107108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 02/01/2021] [Accepted: 02/03/2021] [Indexed: 11/20/2022]
Abstract
Brevoortia Gill 1861 is a genus of the Clupeidae (Teleostei) that includes six species of fishes commonly known as menhadens in eastern North America and "savelhas" or "saracas" in southeastern South America. Species of Brevoortia are important components of the marine food web of coastal ecosystems in the Atlantic and contribute significantly to fisheries. In this study, the first phylogenetic and biogeographic hypotheses including all species of Brevoortia are presented. A total of 113 specimens were analyzed using three molecular markers (two mitochondrial: COI and 16s; and one nuclear: RAG2). Maximum Parsimony, Maximum Likelihood and Bayesian Inference were employed to estimate phylogenetic relationships. A Bayesian multispecies coalescent approach was used to estimate a dated phylogeny, which supported biogeographic analyses of ancestral geographic ranges. Results corroborate previous hypotheses that the four North Atlantic species are grouped in two clades, one composed of B. tyrannus (Latrobe, 1802) and B. patronus Goode, 1878, and the second including B. smithi Hildebrand, 1941 and B. gunteri Hildebrand, 1948. The South Atlantic B. aurea (Spix and Agassiz, 1829) and B. pectinata (Jenyns, 1842) form a third clade, which is sister to the clade composed of B. smithi and B. gunteri. The monophyly and validity of the six nominal species of Brevoortia were not supported. Results also indicate that Brevoortia originated in the North Atlantic during the middle Miocene (about 15 Mya). A cooling event of the tropical Atlantic at around 10 Mya likely facilitated the range expansion of the genus to the South Atlantic, whereas a significant warming of the tropical Atlantic waters during the late Miocene at 6-7 Mya possibly promoted the isolation between the northern and southern counterparts of that ancestral lineage. The relevance of the Florida Peninsula in association with sea level fluctuations for the diversification within Brevoortia is also discussed.
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13
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Picard-Sánchez A, Piazzon MC, Estensoro I, Del Pozo R, Hossameldin Ahmed N, Palenzuela O, Sitjà-Bobadilla A. Experimental Horizontal Transmission of Enterospora nucleophila (Microsporea: Enterocytozoonidae) in Gilthead Sea Bream ( Sparus aurata). Animals (Basel) 2021; 11:362. [PMID: 33535588 DOI: 10.3390/ani11020362] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/23/2021] [Accepted: 01/25/2021] [Indexed: 11/17/2022] Open
Abstract
Enterospora nucleophila is a microsporidian enteroparasite that infects mainly the intestine of gilthead sea bream (Sparus aurata), leading to an emaciative syndrome. Thus far, the only available information about this infection comes from natural outbreaks in farmed fish. The aim of the present study was to determine whether E. nucleophila could be transmitted horizontally using naturally infected fish as donors, and to establish an experimental in vivo procedure to study this host-parasite model without depending on natural infections. Naïve fish were exposed to the infection by cohabitation, effluent, or intubated either orally or anally with intestinal scrapings of donor fish in four different trials. We succeeded in detecting parasite in naïve fish in all the challenges, but the infection level and the disease signs were always milder than in donor fish. The parasite was found in peripheral blood of naïve fish at 4 weeks post-challenge (wpc) in oral and effluent routes, and up to 12 wpc in the anal transmission trial. Molecular diagnosis detected E. nucleophila in other organs besides intestine, such as gills, liver, stomach or heart, although the intensity was not as high as in the target tissue. The infection tended to disappear through time in all the challenge routes assayed, except in the anal infection route.
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Young BJ, Cristos DS, Crespo DC, Somoza GM, Carriquiriborde P. Effects of 17α-ethinylestradiol on sex ratio, gonadal histology and perianal hyperpigmentation of Cnesterodon decemmaculatus (Pisces, Poeciliidae) during a full-lifecycle exposure. Ecotoxicol Environ Saf 2020; 205:111176. [PMID: 32846301 DOI: 10.1016/j.ecoenv.2020.111176] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 07/16/2020] [Accepted: 08/11/2020] [Indexed: 06/11/2023]
Abstract
The effects of 17α-ethinylestradiol (EE2) on sex ratio, gonopodium morphology, and gonadal histology of C. decemmaculatus were assessed by a full-lifecycle exposure experiment. Newborn fish were waterborne exposed to 30, 100, and 300 ng EE2/L for 90 d, using 50 fish per treatment. Additionally, in December of 2016, a field survey was conducted on a C. decemmaculatus population inhabiting the Girado Creek downstream of the Chascomus city wastewater effluent discharge. After 90 d of exposure, EE2 was able to histologically skew the sex ratio toward females and inhibit the full gonopodium development since the lowest tested concentration (LOEC = 30 ng/L). At higher concentrations, EE2 was toxic, inducing mortality in a concentration-dependent fashion (90 d-LC50 = 109.9 ng/L) and altering the gonadal histoarchitecture, causing neither testes nor ovaries discernible histologically (LOEC = 100 ng/L). In addition, a novel response, perianal hyperpigmentation, was discovered been induced by the EE2 exposure in a concentration-dependent fashion (90 d-EC50 = 39.3 ng/L). A higher proportion of females and perianal hyperpigmentation were observed in wild fish collected from the Girado Creek. The major reached conclusions are: i) EE2 induce different effects on the sexual traits of C. decemmaculatus when exposed from early-life or adult stages. ii) The most sensitive effects observed in the laboratory occur in a creek receiving wastewater effluent. iii) The perianal hyperpigmentation comes-up as a promising biomarker of exposure to estrogenic compounds.
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Affiliation(s)
- Brian Jonathan Young
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Microbiología y Zoología Agrícola (IMYZA), Hurlingham, Argentina
| | - Diego Sebastián Cristos
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Tecnología de Alimentos (ITA), Hurlingham, Argentina
| | - Diana Cristina Crespo
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Microbiología y Zoología Agrícola (IMYZA), Hurlingham, Argentina
| | | | - Pedro Carriquiriborde
- Centro de Investigaciones Del Medioambiente (Universidad Nacional de La Plata-CONICET), La Plata, Argentina.
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15
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Bonani Mateussi NT, Melo BF, Oliveira C. Molecular delimitation and taxonomic revision of the wimple piranha Catoprion (Characiformes: Serrasalmidae) with the description of a new species. J Fish Biol 2020; 97:668-685. [PMID: 32501542 DOI: 10.1111/jfb.14417] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 04/06/2020] [Revised: 05/28/2020] [Accepted: 06/01/2020] [Indexed: 06/11/2023]
Abstract
A taxonomic revision of wimple piranhas of the genus Catoprion is performed in combination with a molecular analysis using mtDNA. Molecular phylogenetic analyses of 49 specimens using genetic distances, conventional likelihood and four delimitation methods yielded two distinct lineages of Catoprion, with the morphological analyses of 198 specimens of Catoprion corroborating the molecular results. We provide a redescription of Catoprion mento, from the Paraguay, Orinoco, and tributaries of western Amazon basin, keeping Mylesinus macropterus as a junior synonym of C. mento, and the description of Catoprion absconditus n. sp., from the Amazon and Essequibo basins. C. absconditus n. sp. differs from C. mento by the presence of 86-94 perforated scales in the lateral line (vs. 65-86 scales) and the presence of 35-40 circumpeduncular scales (vs. 29-34 scales). The distribution of C. mento follows the Amazonas-Paraguay-Orinoco lowlands, whereas C. absconditus follows the eastern Amazon biogeographic pattern.
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Affiliation(s)
- Nadayca T Bonani Mateussi
- Departamento de Biologia Estrutural e Funcional, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, São Paulo, Brazil
| | - Bruno F Melo
- Departamento de Biologia Estrutural e Funcional, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, São Paulo, Brazil
| | - Claudio Oliveira
- Departamento de Biologia Estrutural e Funcional, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, São Paulo, Brazil
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16
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Dias GCM, Batlouni SR, Cassel M, Chehade C, De Jesus LWO, Branco GS, Camargo MP, Borella MI. Isolation, in vitro study, and stem cell markers for type A spermatogonia in a Characiformes species. Mol Reprod Dev 2020; 87:783-799. [PMID: 32557886 DOI: 10.1002/mrd.23394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 05/31/2020] [Accepted: 06/04/2020] [Indexed: 12/20/2022]
Abstract
The objective of this study was to establish a protocol for the characterization, isolation, and culture of type A spermatogonia using specific molecular markers for these cells in fish. To this end, adult Prochilodus lineatus testes were collected and digested enzymatically and the resulting testicular suspension was separated using a discontinuous Percoll gradient, followed by differential plating. The cell cultures obtained were monitored for 15 days and analyzed using the immunofluorescence method with anti-Vasa, anti-GFRα1, and anti-OCT4 antibodies. Spermatogonial enrichment was also performed using flow cytometry. Although discontinuous Percoll gradient centrifugation followed by differential plating enabled the removal of differentiated germ cells and somatic cells, enriching the pool of type A spermatogonia, the enrichment of type A spermatogonia through flow cytometry of samples without Percoll proved to be more efficient. Prominent cell agglomerates that were characterized according to different stem cell markers as type A spermatogonia were observed during the 15 days of the cell culture. The use of immunoperoxidase and western blot analysis methods confirmed the specificity of the markers for type A spermatogonia of P. lineatus. When combined with specific cell culture conditions, the positive characterization of these molecular markers clarified certain aspects of spermatogonial regulation, such as survival and proliferation. Finally, understanding the regulation of the in vitro germ cell maintenance process may contribute to the enhancement of in vivo and in vitro reproduction techniques of endangered or aquaculture fish species.
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Affiliation(s)
- Gisele C M Dias
- Fish Endocrinology Laboratory, Department of Cell and Developmental Biology, Biomedical Sciences Institute, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Sérgio R Batlouni
- Aquaculture Center of São Paulo State University (CAUNESP), São Paulo State University (UNESP), Campus Jaboticabal, Jaboticabal, São Paulo, Brazil
| | - Mônica Cassel
- Department of Education - Bachelor of Science in Animal Science, Mato Grosso Federal Institute of Education, Science, and Technology, Campus Alta Floresta, Alta Floresta, Mato Grosso, Brazil
| | - Chayrra Chehade
- Fish Endocrinology Laboratory, Department of Cell and Developmental Biology, Biomedical Sciences Institute, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Lázaro W O De Jesus
- Laboratory of Applied Animal Morphophysiology, Department of Histology and Embryology, Institute of Biological Sciences and Health, Federal University of Alagoas, Campus A. C. Simões, Maceió, Alagoas, Brazil
| | - Giovana S Branco
- Fish Endocrinology Laboratory, Department of Cell and Developmental Biology, Biomedical Sciences Institute, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Marília P Camargo
- Fish Endocrinology Laboratory, Department of Cell and Developmental Biology, Biomedical Sciences Institute, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Maria I Borella
- Fish Endocrinology Laboratory, Department of Cell and Developmental Biology, Biomedical Sciences Institute, University of São Paulo, São Paulo, São Paulo, Brazil
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17
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Abstract
The number of fishes exceeds that of all other vertebrates both in terms of species numbers and in their morphological and phylogenetic diversity. They are an ecologically and economically important group and play an essential role as a resource for humans. This makes the genomic exploration of fishes an important area of research, both from an applied and a basic research perspective. Fish genomes can vary greatly in complexity, which is partially due to differences in size and content of repetitive DNA, a history of genome duplication events and because fishes may be polyploid, all of which complicate the assembly and analysis of genome sequences. However, the advent of modern sequencing techniques now facilitates access to genomic data that permit genome-wide exploration of genetic information even for previously unexplored species. The development of genomic resources for fishes is spearheaded by model organisms that have been subject to genetic analysis and genome sequencing projects for a long time. These offer a great potential for the exploration of new species through the transfer of genomic information in comparative analyses. A growing number of genome sequencing projects and the increasing availability of tools to assemble and access genomic information now move boundaries between model and nonmodel species and promises progress in many interesting but unexplored species that remain to be studied.
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Affiliation(s)
- Arne W Nolte
- AG Ökologische Genomik, Institut für Biologie und Umweltwissenschaften, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany.
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18
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Narciso RB, Brandão H, Perbiche-Neves G, da Silva RJ. A New Genus of Ergasilidae (Copepoda: Cyclopoida) from the Gills of Astyanax fasciatus (Cuvier, 1819) (Actinopterygii: Characidae). Acta Parasitol 2019; 64:850-65. [PMID: 31432390 DOI: 10.2478/s11686-019-00108-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Accepted: 08/06/2019] [Indexed: 11/21/2022]
Abstract
PURPOSE To describe a new genus and a new species of an ectoparasitic ergasilid (Copepoda, Ergasilidae) parasite of the red-tailed lambari, Astyanax fasciatus, from Jurumirim Reservoir (Upper Paranapanema River), São Paulo State, Brazil. METHODS The host fish were collected using multi-panel gill nets. The gill of each fish was washed and examined in a stereo microscope for copepods. The copepods found were stored in 70% ethanol, cleared in lactic acid, and mounted in Hoyer's medium. Some specimens were dissected in glycerol medium and then each dissected part was mounted on individual slides. RESULTS A new genus and a new species of Ergasilidae were described herein. Duoergasilus basilongus n. gen., n. sp. differs from all other ergasilids in having the second and third pair of biramous swimming legs (P2 and P3) each with a 2-segmented endopod, and by its unique maxillary basis, resembling a whip. CONCLUSIONS The new copepod is the first 'four-legged' ergasilid with all swimming legs having a 2-segmented endopod. Duoergasilus basilongus n. sp. represents the first record of a parasitic copepod on A. fasciatus in Jurumirim Reservoir, as well as its represents the first description to species level of an ergasilid infecting an Astyanax species in Brazil. A key to the 28 accepted genera of Ergasilidae is provided.
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19
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Sitjà-Bobadilla A, Gil-Solsona R, Estensoro I, Piazzon MC, Martos-Sitcha JA, Picard-Sánchez A, Fuentes J, Sancho JV, Calduch-Giner JA, Hernández F, Pérez-Sánchez J. Disruption of gut integrity and permeability contributes to enteritis in a fish-parasite model: a story told from serum metabolomics. Parasit Vectors 2019; 12:486. [PMID: 31619276 PMCID: PMC6796429 DOI: 10.1186/s13071-019-3746-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 07/31/2019] [Accepted: 10/09/2019] [Indexed: 12/16/2022] Open
Abstract
Background In the animal production sector, enteritis is responsible for serious economic losses, and intestinal parasitism is a major stress factor leading to malnutrition and lowered performance and animal production efficiency. The effect of enteric parasites on the gut function of teleost fish, which represent the most ancient bony vertebrates, is far from being understood. The intestinal myxozoan parasite Enteromyxum leei dwells between gut epithelial cells and causes severe enteritis in gilthead sea bream (Sparus aurata), anorexia, cachexia, growth impairment, reduced marketability and increased mortality. Methods This study aimed to outline the gut failure in this fish-parasite model using a multifaceted approach and to find and validate non-lethal serum markers of gut barrier dysfunction. Intestinal integrity was studied in parasitized and non-parasitized fish by immunohistochemistry with specific markers for cellular adhesion (E-cadherin) and tight junctions (Tjp1 and Cldn3) and by functional studies of permeability (oral administration of FITC-dextran) and electrophysiology (Ussing chambers). Serum samples from parasitized and non-parasitized fish were analyzed using non-targeted metabolomics and some significantly altered metabolites were selected to be validated using commercial kits. Results The immunodetection of Tjp1 and Cldn3 was significantly lower in the intestine of parasitized fish, while no strong differences were found in E-cadherin. Parasitized fish showed a significant increase in paracellular uptake measured by FITC-dextran detection in serum. Electrophysiology showed a decrease in transepithelial resistance in infected animals, which showed a diarrheic profile. Serum metabolomics revealed 3702 ions, from which the differential expression of 20 identified compounds significantly separated control from infected groups in multivariate analyses. Of these compounds, serum inosine (decreased) and creatine (increased) were identified as relevant and validated with commercial kits. Conclusions The results demonstrate the disruption of tight junctions and the loss of gut barrier function, a metabolomic profile of absorption dysfunction and anorexia, which further outline the pathophysiological effects of E. leei.![]()
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Affiliation(s)
- Ariadna Sitjà-Bobadilla
- Fish Pathology Group, Instituto de Acuicultura Torre de la Sal (IATS-CSIC), 12595 Ribera de Cabanes, Castellón, Spain. .,Associated Unit of Marine Ecotoxicology (IATS-IUPA), Castellon, Spain.
| | - Rubén Gil-Solsona
- Research Institute for Pesticides and Water (IUPA), University Jaume I, Avda. Vicent Sos Baynat, s/n. Campus del Riu Sec, 12071, Castellón, Spain
| | - Itziar Estensoro
- Fish Pathology Group, Instituto de Acuicultura Torre de la Sal (IATS-CSIC), 12595 Ribera de Cabanes, Castellón, Spain
| | - M Carla Piazzon
- Fish Pathology Group, Instituto de Acuicultura Torre de la Sal (IATS-CSIC), 12595 Ribera de Cabanes, Castellón, Spain
| | - Juan Antonio Martos-Sitcha
- Nutrigenomics and Fish Endocrinology Group, Instituto de Acuicultura Torre de la Sal (IATS-CSIC), 12595 Ribera de Cabanes, Castellón, Spain.,Department of Biology, Faculty of Marine and Environmental Sciences, Instituto Universitario de Investigación Marina (INMAR), Campus Universitario de Puerto Real, University of Cádiz, 11510, Cádiz, Spain
| | - Amparo Picard-Sánchez
- Fish Pathology Group, Instituto de Acuicultura Torre de la Sal (IATS-CSIC), 12595 Ribera de Cabanes, Castellón, Spain
| | - Juan Fuentes
- Comparative Endocrinology and Integrative Biology, CCMar, University of Algarve, Campus de Gambelas, 8005-139, Faro, Portugal
| | - Juan Vicente Sancho
- Research Institute for Pesticides and Water (IUPA), University Jaume I, Avda. Vicent Sos Baynat, s/n. Campus del Riu Sec, 12071, Castellón, Spain
| | - Josep A Calduch-Giner
- Associated Unit of Marine Ecotoxicology (IATS-IUPA), Castellon, Spain.,Nutrigenomics and Fish Endocrinology Group, Instituto de Acuicultura Torre de la Sal (IATS-CSIC), 12595 Ribera de Cabanes, Castellón, Spain
| | - Félix Hernández
- Associated Unit of Marine Ecotoxicology (IATS-IUPA), Castellon, Spain.,Research Institute for Pesticides and Water (IUPA), University Jaume I, Avda. Vicent Sos Baynat, s/n. Campus del Riu Sec, 12071, Castellón, Spain
| | - Jaume Pérez-Sánchez
- Associated Unit of Marine Ecotoxicology (IATS-IUPA), Castellon, Spain.,Nutrigenomics and Fish Endocrinology Group, Instituto de Acuicultura Torre de la Sal (IATS-CSIC), 12595 Ribera de Cabanes, Castellón, Spain
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20
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Davesne D, Meunier FJ, Friedman M, Benson RBJ, Otero O. Histology of the endothermic opah ( Lampris sp.) suggests a new structure-function relationship in teleost fish bone. Biol Lett 2019; 14:rsbl.2018.0270. [PMID: 29950318 DOI: 10.1098/rsbl.2018.0270] [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: 04/12/2018] [Accepted: 05/30/2018] [Indexed: 11/12/2022] Open
Abstract
Endothermy, production and retention of heat by the body, appeared convergently in mammals, birds and four spiny-rayed teleost fish lineages. Of these, red-muscle endothermy over most or all of the body has only appeared in two groups: tunas and the opah (Lampris). Hitherto, tunas have been the only spiny-rayed fishes known to have bones containing embedded osteocyte cells; others have acellular bone. We examined bone histology in Lampris for the first time, demonstrating the presence of cellular bone very similar to that of tunas. This contrasts with the acellular condition of its ectothermic close relatives. The distribution of this character suggests that it co-evolved with red-muscle endothermy, hinting at a common physiological mechanism that would link bone histology to endothermy in these distantly related teleost lineages.
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Affiliation(s)
- Donald Davesne
- Department of Earth Sciences, University of Oxford, Oxford, UK
| | - François J Meunier
- BOREA (UMR 7208 CNRS, MNHN, IRD, Sorbonne Université), Muséum national d'Histoire naturelle, Paris, France
| | - Matt Friedman
- Museum of Paleontology and Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI, USA
| | | | - Olga Otero
- PalEvoPrim (UMR 7262 CNRS), Université de Poitiers, Poitiers, France
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21
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Rodrigues PHDM, Dos Santos RZ, Silva DMZDA, Goes CAG, Oliveira C, Foresti F, Porto-Foresti F, Utsunomia R. Chromosomal and Genomic Dynamics of Satellite DNAs in Characidae (Characiformes, Teleostei) Species. Zebrafish 2019; 16:408-414. [PMID: 31145041 DOI: 10.1089/zeb.2019.1738] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Satellite DNAs (satDNAs) are tandemly repeated DNA sequences with great abundance in eukaryotic genomes. A single species may carry up to hundreds of satDNA families, which is collectively called as "satellitome," each showing its own dynamics and evolution rates. In this context, all live species contain a satDNA library that may be partially or totally shared with other related species/populations. In the late few years, next-generation sequencing (NGS) and novel bioinformatic tools facilitated the massive characterization of these sequences at low costs, and consequently, comparing satDNAs between species. In this study, we characterized two novel satDNAs (MsaSat03-80 and MsaSat04-142) in three characid fish (Astyanax paranae and Astyanax fasciatus and two populations of Moenkhausia sanctaefilomenae) and mapped their chromosomal location to unveil the evolutionary dynamics of satDNA repeats in those species. Our results evidenced that MsaSat03 is present in the genomes of all analyzed species, but is clustered only in the chromosomes of M. sanctaefilomenae, exhibiting a conserved number and location of sites. Conversely, MsaSat04 sequences is restricted to M. sanctaefilomenae and shows a differential distribution between the two analyzed populations. Altogether, our analyses point to a complex history of satDNA families in characid fish and the utility of NGS data for comparative satDNA analysis.
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Affiliation(s)
| | - Rodrigo Zeni Dos Santos
- 1Departamento de Ciências Biológicas, Faculdade de Ciências, Universidade Estadual Paulista-UNESP, Bauru, Brazil
| | | | - Caio Augusto Gomes Goes
- 1Departamento de Ciências Biológicas, Faculdade de Ciências, Universidade Estadual Paulista-UNESP, Bauru, Brazil
| | - Claudio Oliveira
- 2Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista-UNESP, Botucatu, Brazil
| | - Fausto Foresti
- 2Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista-UNESP, Botucatu, Brazil
| | - Fábio Porto-Foresti
- 1Departamento de Ciências Biológicas, Faculdade de Ciências, Universidade Estadual Paulista-UNESP, Bauru, Brazil
| | - Ricardo Utsunomia
- 1Departamento de Ciências Biológicas, Faculdade de Ciências, Universidade Estadual Paulista-UNESP, Bauru, Brazil.,2Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista-UNESP, Botucatu, Brazil
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22
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Brocklehurst R, Porro L, Herrel A, Adriaens D, Rayfield E. A digital dissection of two teleost fishes: comparative functional anatomy of the cranial musculoskeletal system in pike (Esox lucius) and eel (Anguilla anguilla). J Anat 2019; 235:189-204. [PMID: 31148160 DOI: 10.1111/joa.13007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/29/2019] [Indexed: 12/15/2022] Open
Abstract
Advances in X-ray computed tomography (CT) have led to a rise in the use of non-destructive imaging methods in comparative anatomy. Among these is contrast-enhanced CT scanning, which employs chemical stains to visualize soft tissues. Specimens may then be 'digitally dissected', producing detailed, three-dimensional digital reconstructions of the soft- and hard-tissue anatomy, allowing examination of anatomical structures in situ and making accurate measurements (lengths, volumes, etc.). Here, we apply this technique to two species of teleost fish, providing one of the first comprehensive three-dimensional (3D) descriptions of teleost cranial soft tissue and quantifying differences in muscle anatomy that may be related to differences in feeding ecology. Two species with different feeding ecologies were stained, scanned and imaged to create digital 3D musculoskeletal reconstructions: Esox lucius (Northern Pike), predominantly a suction feeder; and Anguilla anguilla (European eel), which captures prey predominantly by biting. Muscle cross-sectional areas were calculated and compared between taxa, focusing on muscles that serve important roles in feeding. The adductor mandibulae complex - used in biting - was larger in Esox than Anguilla relative to head size. However, the overall architecture of the adductor mandibulae was also very different between the two species, with that of Anguilla better optimized for delivering forceful bites. Levator arcus palatini and sternohyoideus - which are used in suction feeding - are larger in Esox, whereas the levator operculi is larger in Anguilla. Therefore, differences in the size of functionally important muscles do not necessarily correlate neatly with presumed differences in feeding mode.
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Affiliation(s)
- Robert Brocklehurst
- School of Earth and Environmental Sciences, University of Manchester, Manchester, UK.,School of Earth Sciences, University of Bristol, Bristol, UK
| | - Laura Porro
- School of Earth Sciences, University of Bristol, Bristol, UK.,Department of Cell and Developmental Biology, University College London, London, UK
| | - Anthony Herrel
- UMR 7179 (MNHN-CNRS) MECADEV, Département Adaptations du Vivant, Muséum National d'Histoire Naturelle, Paris, France
| | - Dominique Adriaens
- Department of Biology, Evolutionary Morphology of Vertebrates, Ghent University, Gent, Belgium
| | - Emily Rayfield
- School of Earth Sciences, University of Bristol, Bristol, UK
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Mazzoni TS, Viadanna RR, Quagio-Grassiotto I. Presence, localization and morphology of TELOCYTES in developmental gonads of fishes. J Morphol 2019; 280:654-665. [PMID: 30793364 DOI: 10.1002/jmor.20972] [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: 08/29/2018] [Revised: 01/21/2019] [Accepted: 02/11/2019] [Indexed: 01/27/2023]
Abstract
Telocytes are a new defined type of interstitial cells, considered as a stem cell, with very long and thin cytoplasmic extensions. They are present in the vertebrates, and may participate in tissue remodeling. In fish, during gonadal development, the events that culminate with the germinal epithelium formation are well known. However, the interstitial compartment remains poorly explored, although it may have a great contribution to the morpho-functional changes that occur in the gonad. As in other organisms, in fish, the interstitium consists especially of connective tissue elements. However, until now, there are no reports of the presence and the action of the telocytes in the connective tissue of gonads of fish. Thus, this study aimed to detect the presence, localization and morphology of telocytes during the gonadal development of several species of fish. The gonads were analyzed by light microscopy, transmission electron microscopy and immunohistochemistry for localization of CD34, Vimentin, and metalloproteinases. The presence of two proteins characteristics of mesenchymal cell was detected in cells of the gonads of all species. In addition, they presented a typical morphology of telocytes, showing cellular extensions. Gonadal telocytes also presented positive response to metalloproteinases. In mammals, telocytes can undergo de-differentiation contributing to the reorganization of the extracellular matrix. This role may be performed by the metalloproteinases detected here. The detection of Vimentin and CD34 in the same cellular type, associated with its morphological characteristics, allows us to conclude that some interstitial cells in Teleostei are considered telocytes, identical to the ones already described in mammals and other vertebrates.
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Affiliation(s)
- Talita Sarah Mazzoni
- Department of Cell and Development Biology, Institute of Biomedical Sciences, Federal University of Alfenas (UNIFAL-MG), Alfenas, Minas Gerais, Brazil.,Department of Morphology, Botucatu Biosciences Institute, State University of São Paulo (UNESP), Botucatu, São Paulo, Brazil
| | - Renan Ribeiro Viadanna
- Department of Morphology, Botucatu Biosciences Institute, State University of São Paulo (UNESP), Botucatu, São Paulo, Brazil
| | - Irani Quagio-Grassiotto
- Department of Morphology, Botucatu Biosciences Institute, State University of São Paulo (UNESP), Botucatu, São Paulo, Brazil.,Aquaculture Center of UNESP (CAUNESP), State University of São Paulo (UNESP), Jaboticabal, São Paulo, Brazil
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24
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Marramà G, Bannikov AF, Kriwet J, Carnevale G. An Eocene paraclupeid fish ( Teleostei, Ellimmichthyiformes) from Bolca, Italy: the youngest marine record of double-armoured herrings. Pap Palaeontol 2019; 5:83-98. [PMID: 30854219 PMCID: PMC6392134 DOI: 10.1002/spp2.1230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Accepted: 04/23/2018] [Indexed: 06/09/2023]
Abstract
A new double-armoured herring of the clupeomorph order Ellimmichthyiformes, Eoellimmichthys superstes gen. et sp. nov., is described herein based on a single partially complete specimen from the early Eocene Pesciara site of the Bolca Konservat-Lagerstätte, north-eastern Italy. The fossil documented herein exhibits a unique combination of features (e.g. ornamentation of the skull bones; medial fusion of the contralateral halves of the neural arches of abdominal vertebrae; teeth on endopterygoid, parhypural fused to the first preural centrum; presence of a short series of 6 (or 7) predorsal scutes increasing in size posteriorly; postpelvic scutes bearing very prominent spines), which clearly supports its recognition as a new genus and species of the family Paraclupeidae. Evidence is provided to show that Eoellimmichthys gen. nov. is most closely related phylogenetically to the Early Cretaceous genus Ellimmichthys. The new taxon described herein represents the youngest marine occurrence of the family Paraclupeidae and, more generally, of the order Ellimmichthyiformes, suggesting that the shallow marine settings of the Tethys might have favoured the persistence of certain fish lineages that were severely affected by the end-Cretaceous mass extinction.
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Affiliation(s)
- Giuseppe Marramà
- Department of PalaeontologyUniversity of ViennaAlthanstrasse 141090ViennaAustria
| | - Alexandre F. Bannikov
- Borisyak Paleontological Institute of the Russian Academy of SciencesProfsoyuznaya 123Moscow117647Russia
| | - Jürgen Kriwet
- Department of PalaeontologyUniversity of ViennaAlthanstrasse 141090ViennaAustria
| | - Giorgio Carnevale
- Dipartimento di Scienze della TerraUniversità degli Studi di Torinovia Valperga Caluso 3510125TorinoItaly
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25
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Woldemariam NT, Agafonov O, Høyheim B, Houston RD, Taggart JB, Andreassen R. Expanding the miRNA Repertoire in Atlantic Salmon; Discovery of IsomiRs and miRNAs Highly Expressed in Different Tissues and Developmental Stages. Cells 2019; 8:E42. [PMID: 30641951 DOI: 10.3390/cells8010042] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 12/16/2022] Open
Abstract
MicroRNAs (miRNAs) are important post-transcriptional gene expression regulators. Here, 448 different miRNA genes, including 17 novel miRNAs, encoding for 589 mature Atlantic salmon miRNAs were identified after sequencing 111 samples (fry, pathogen challenged fry, various developmental and adult tissues). This increased the reference miRNAome with almost one hundred genes. Prior to isomiR characterization (mature miRNA variants), the proportion of erroneous sequence variants (ESVs) arising in the analysis pipeline was assessed. The ESVs were biased towards 5’ and 3’ end of reads in unexpectedly high proportions indicating that measurements of ESVs rather than Phred score should be used to avoid misinterpreting ESVs as isomiRs. Forty-three isomiRs were subsequently discovered. The biological effect of the isomiRs measured as increases in target diversity was small (<3%). Five miRNA genes showed allelic variation that had a large impact on target gene diversity if present in the seed. Twenty-one miRNAs were ubiquitously expressed while 31 miRNAs showed predominant expression in one or few tissues, indicating housekeeping or tissue specific functions, respectively. The miR-10 family, known to target Hox genes, were highly expressed in the developmental stages. The proportion of miR-430 family members, participating in maternal RNA clearance, was high at the earliest developmental stage.
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26
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Abstract
Background The facial musculature is a remarkable anatomical complex involved in vital activities of fishes, such as food capture and gill ventilation. The evolution of the facial muscles is largely unknown in most major fish lineages, such as the Actinopterygii. This megadiverse group includes all ray-finned fishes and comprises approximately half of the living vertebrate species. The Polypteriformes, Acipenseriformes, Lepisosteiformes, Amiiformes, Elopiformes, and Hiodontiformes occupy basal positions in the actinopterygian phylogeny and a comparative study of their facial musculature is crucial for understanding the cranial evolution of bony fishes (Osteichthyes) as a whole. Results The facial musculature of basal actinopterygians is revised, redescribed, and analyzed under an evolutionary perspective. We identified twenty main muscle components ontogenetically and evolutionarily derived from three primordial muscles. Homologies of these components are clarified and serve as basis for the proposition of a standardized and unifying myological terminology for all ray-finned fishes. The evolutionary changes in the facial musculature are optimized on the osteichthyan tree and several new synapomorphies are identified for its largest clades, including the Actinopterygii, Neopterygii, and Teleostei. Myological data alone ambiguously support the monophyly of the Holostei. A newly identified specialization constitutes the first unequivocal morphological synapomorphy for the Elopiformes. The myological survey additionally allowed a reinterpretation of the homologies of ossifications in the upper jaw of acipenseriforms. Conclusions The facial musculature proved to be extremely informative for the higher-level phylogeny of bony fishes. These muscles have undergone remarkable changes during the early radiation of ray-finned fishes, with significant implications for the knowledge of the musculoskeletal evolution of both derived actinopterygians and lobe-finned fishes (Sarcopterygii).
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Affiliation(s)
- Aléssio Datovo
- 1Laboratório de Ictiologia, Museu de Zoologia da Universidade de São Paulo (MZUSP), Av. Nazaré, 481, São Paulo, 04263-000 SP Brazil
| | - Pedro P Rizzato
- 2Laboratório de Ictiologia de Ribeirão Preto (LIRP), FFCLRP, Universidade de São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto, SP 14040-901 Brazil
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27
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Mendes YA, Lee JT, Viana IKS, Rocha RM, Ferreira MAP. Reproductive biology of the tiger pleco Panaqolus tankei (Loricariidae) in a lentic system of the Amazon Basin. J Fish Biol 2018; 93:711-714. [PMID: 29956325 DOI: 10.1111/jfb.13735] [Citation(s) in RCA: 3] [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: 10/22/2017] [Accepted: 06/18/2018] [Indexed: 06/08/2023]
Abstract
This study presents the first information on the reproduction of the recently described tiger pleco Panaqolus tankei, from Lake Bolonha in the north-eastern Amazon Basin. This loricariid has a long reproductive period, fractionated spawning and low fecundity (on average, female gonads contained 37 oocytes), a total length (LT ) at first maturity of 47.4 mm for females and 54.1 mm LT for males. Correlation of the condition factor and gonado-somatic index with environmental variables suggests that turbidity favours P. tankei reproduction in this environment.
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Affiliation(s)
- Yanne A Mendes
- Institute of Biological Sciences, Universidade Federal do Pará, Rua Augusto Corrêa, Belém, Brazil
| | - James T Lee
- Institute of Geosciences, Universidade Federal do Pará, Rua Augusto Corrêa, Belém, Brazil
| | - Ivana K S Viana
- Institute of Biological Sciences, Universidade Federal do Pará, Rua Augusto Corrêa, Belém, Brazil
| | - Rossineide M Rocha
- Institute of Biological Sciences, Universidade Federal do Pará, Rua Augusto Corrêa, Belém, Brazil
| | - Maria A P Ferreira
- Institute of Biological Sciences, Universidade Federal do Pará, Rua Augusto Corrêa, Belém, Brazil
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28
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Angulo A, Santos AC, López M, Langeani F, Mcmahan CD. A new species of Astyanax (Characiformes: Characidae) from Costa Rica and Panama, with a key to the lower Central American species of the genus. J Fish Biol 2018; 92:1866-1887. [PMID: 29624681 DOI: 10.1111/jfb.13626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 12/06/2017] [Accepted: 03/27/2018] [Indexed: 06/08/2023]
Abstract
Astyanax anai, a new species of characid fish, is described from the Sixaola River basin, eastern Costa Rica-western Panama, Central America. The new species can be distinguished from all other congeners by the following combination of characters: premaxillary teeth 4-5 at the inner series and 4-6 at the outer series; maxillary teeth tricuspid, 2-4; predorsal scale series irregular and incomplete, with an unscaled space behind tip of supraoccipital process and 12-14 scales; lateral line scales 34-39; humeral region with a conspicuous black and rounded to horizontally ovate spot and two diffuse brown and vertically elongate bars (the first through the rounded to horizontally ovate spot, the second 2-4 scales behind the first); body depth 36·6-42·3% of standard length (LS ); midlateral stripe formed by a series of 10-14 anteriorly-directed dermal herringbone, or chevron-shaped, marks, most apparent in juveniles and in preserved specimens, extending above the lateral line from the black humeral spot or just behind it (from the second vertical bar) to the caudal peduncle; scale rows from lateral line to base of first dorsal-fin ray 8-9; scale rows from lateral line to base of pelvic fin 7-8; pre-anal distance 53·9-61·9% of LS ; total anal-fin elements 29-33; caudal spot elongated, rhomboid or rectangular, with its anterior margin surpassing the middle of the caudal peduncle, usually reaching the anal-fin insertion, posteriorly covering 4-7 principal caudal-fin rays and not extending onto the ventral and dorsal margins of the caudal peduncle, covering 3-5 horizontal scale rows. In order to test the phylogenetic relationships of the new taxon in relation to the other North and Central American species of the genus, a new phylogenetic hypothesis based on a reanalysis of the morphological matrix by Schmitter-Soto (2016) is proposed. A key to the lower Central American (southern Nicaragua to eastern Panama) species of Astyanax is also provided.
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Affiliation(s)
- A Angulo
- Museo de Zoología and Centro de Investigación en Ciencias del Mar y Limnologia (CIMAR), Universidad de Costa Rica, 11501-2060, San Pedro de Montes de Oca, San José, Costa Rica
- UNESP, Universidade Estadual Paulista 'Júlio de Mesquita Filho', Laboratório de Ictiologia, Departamento de Zoologia e Botânica, Rua Cristóvão Colombo, 2265, 15054-000, São José do Rio Preto, SP, Brazil
| | - A C Santos
- UNESP, Universidade Estadual Paulista 'Júlio de Mesquita Filho', Laboratório de Ictiologia, Departamento de Zoologia e Botânica, Rua Cristóvão Colombo, 2265, 15054-000, São José do Rio Preto, SP, Brazil
| | - M López
- Museo de Zoología and Centro de Investigación en Ciencias del Mar y Limnologia (CIMAR), Universidad de Costa Rica, 11501-2060, San Pedro de Montes de Oca, San José, Costa Rica
| | - F Langeani
- UNESP, Universidade Estadual Paulista 'Júlio de Mesquita Filho', Laboratório de Ictiologia, Departamento de Zoologia e Botânica, Rua Cristóvão Colombo, 2265, 15054-000, São José do Rio Preto, SP, Brazil
| | - C D Mcmahan
- The Field Museum of Natural History, 1400 S, Lake Shore Drive, Chicago, Illinois, 60605, U.S.A
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29
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Brandão KDO, Rocha-Reis DA, Garcia C, Pazza R, de Almeida-Toledo LF, Kavalco KF. Studies in two allopatric populations of Hypostomus affinis (Steindachner, 1877): the role of mapping the ribosomal genes to understand the chromosome evolution of the group. Comp Cytogenet 2018; 12:1-12. [PMID: 29362669 PMCID: PMC5770560 DOI: 10.3897/compcytogen.v12i1.22052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 12/05/2017] [Indexed: 05/15/2023]
Abstract
Several cytogenetic markers show chromosomal diversity in the fish such as "armoured catfish". Although studies have characterized many species in the major genera representing these Siluridae, particularly in the genus Hypostomus Lacépède, 1803, trends in chromosome evolution of this group remain unclear. The Paraíba do Sul river basin contains the armoured catfish Hypostomus affinis Steindachner, 1877, which is unique because of its distribution of repetitive DNAs, the 5S and 18S rDNA. Identified samples and registered collections in Brazilian museums were identified as the same typological species, while we observed wide variations in the physical location of this gene in the karyotype based on fluorescent in situ hybridization results. In this study, we propose that these species can represent evolutionarily independent units, as these fish frequently undergo processes such as dispersion and vicariance and that the rDNA is associated with DNA that spreads in the genome, such as transposons. Additionally, the absence of gene flow due to the distance of the sample location could intensify evolutionary processes. The phenotypes found for the 18S rDNA showed minor changes in relation to the number of sites between the lower and upper drainage regions of Paraíba do Sul. The large difference in the number of sites found for the 5S rDNA entered the same region (upper drainage of the basin) and the literature data could represent a population dynamics where an expansion of the 5S rDNA sites provides an extinct or non-sampled cytotype in this work.
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Affiliation(s)
- Karina de Oliveira Brandão
- Leiden University Medical Center, Department of Anatomy and Embryology, S-1-P, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | - Dinaíza Abadia Rocha-Reis
- Universidade Federal de Viçosa, Campus Rio Paranaíba, Institute of Biological and Health Sciences, Laboratory of Ecological and Evolutionary Genetics, BR 354 - km 310, PO Box 22, ZIP 38810-000, Rio Paranaíba, MG, Brazil
| | - Caroline Garcia
- Universidade Estadual do Sudoeste da Bahia, Campus Jequié, Department of Biological Sciences, Av. José Moreira Sobrinho s/n, Jequiezinho, ZIP 45206-190, Jequié, BA, Brazil
| | - Rubens Pazza
- Universidade Federal de Viçosa, Campus Rio Paranaíba, Institute of Biological and Health Sciences, Laboratory of Ecological and Evolutionary Genetics, BR 354 - km 310, PO Box 22, ZIP 38810-000, Rio Paranaíba, MG, Brazil
| | - Lurdes Foresti de Almeida-Toledo
- Universidade de São Paulo. Institute of Biosciences, Department of Genetics and Evolutionary Biology, Rua do Matão, 277 – Edifício André Dreyfus, Cidade Universitária, ZIP 05508090, São Paulo, SP, Brazil
| | - Karine Frehner Kavalco
- Universidade Federal de Viçosa, Campus Rio Paranaíba, Institute of Biological and Health Sciences, Laboratory of Ecological and Evolutionary Genetics, BR 354 - km 310, PO Box 22, ZIP 38810-000, Rio Paranaíba, MG, Brazil
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Nakamura Y, Yasuike M, Mekuchi M, Iwasaki Y, Ojima N, Fujiwara A, Chow S, Saitoh K. Rhodopsin gene copies in Japanese eel originated in a teleost-specific genome duplication. Zoological Lett 2017; 3:18. [PMID: 29075512 PMCID: PMC5645911 DOI: 10.1186/s40851-017-0079-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 10/11/2017] [Indexed: 06/16/2023]
Abstract
BACKGROUND Gene duplication is considered important to increasing the genetic diversity in animals. In fish, visual pigment genes are often independently duplicated, and the evolutionary significance of such duplications has long been of interest. Eels have two rhodopsin genes (rho), one of which (freshwater type, fw-rho) functions in freshwater and the other (deep-sea type, ds-rho) in marine environments. Hence, switching of rho expression in retinal cells is tightly linked with eels' unique life cycle, in which they migrate from rivers or lakes to the sea. These rho genes are apparently paralogous, but the timing of their duplication is unclear due to the deep-branching phylogeny. The aim of the present study is to elucidate the evolutionary origin of the two rho copies in eels using comparative genomics methods. RESULTS In the present study, we sequenced the genome of Japanese eel Anguilla japonica and reconstructed two regions containing rho by de novo assembly. We found a single corresponding region in a non-teleostean primitive ray-finned fish (spotted gar) and two regions in a primitive teleost (Asian arowana). The order of ds-rho and the neighboring genes was highly conserved among the three species. With respect to fw-rho, which was lost in Asian arowana, the neighboring genes were also syntenic between Japanese eel and Asian arowana. In particular, the pattern of gene losses in ds-rho and fw-rho regions was the same as that in Asian arowana, and no discrepancy was found in any of the teleost genomes examined. Phylogenetic analysis supports mutual monophyly of these two teleostean synteny groups, which correspond to the ds-rho and fw-rho regions. CONCLUSIONS Syntenic and phylogenetic analyses suggest that the duplication of rhodopsin gene in Japanese eel predated the divergence of eel (Elopomorpha) and arowana (Osteoglossomorpha). Thus, based on the principle of parsimony, it is most likely that the rhodopsin paralogs were generated through a whole genome duplication in the ancestor of teleosts, and have remained till the present in eels with distinct functional roles. Our result indicates, for the first time, that teleost-specific genome duplication may have contributed to a gene innovation involved in eel-specific migratory life cycle.
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Affiliation(s)
- Yoji Nakamura
- Research Center for Bioinformatics and Biosciences, National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Kanazawa, Yokohama, Kanagawa 236-8648 Japan
| | - Motoshige Yasuike
- Research Center for Bioinformatics and Biosciences, National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Kanazawa, Yokohama, Kanagawa 236-8648 Japan
| | - Miyuki Mekuchi
- Research Center for Bioinformatics and Biosciences, National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Kanazawa, Yokohama, Kanagawa 236-8648 Japan
| | - Yuki Iwasaki
- Research Center for Bioinformatics and Biosciences, National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Kanazawa, Yokohama, Kanagawa 236-8648 Japan
- Present address: National Institute of Genetics, 1111 Yata, Mishima, Shizuoka, 411-8540 Japan
| | - Nobuhiko Ojima
- Research Center for Bioinformatics and Biosciences, National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Kanazawa, Yokohama, Kanagawa 236-8648 Japan
- Present address: Japan Fisheries Research and Education Agency, 2-3-3 Minatomirai, Nishi, Yokohama, Kanagawa 220-6115 Japan
| | - Atushi Fujiwara
- Research Center for Bioinformatics and Biosciences, National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Kanazawa, Yokohama, Kanagawa 236-8648 Japan
| | - Seinen Chow
- Research Center for Bioinformatics and Biosciences, National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Kanazawa, Yokohama, Kanagawa 236-8648 Japan
| | - Kenji Saitoh
- Research Center for Bioinformatics and Biosciences, National Research Institute of Fisheries Science, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Kanazawa, Yokohama, Kanagawa 236-8648 Japan
- Present address: Tohoku National Fisheries Research Institute, Japan Fisheries Research and Education Agency, 3-27-5 Shinhama, Shiogama, Miyagi 985-0001 Japan
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Abstract
Lophotidae, or crestfishes, is a family of rare deep-sea teleosts characterised by an enlarged horn-like crest on the forehead. They are poorly represented in the fossil record, by only three described taxa. One specimen attributed to Lophotidae has been described from the pelagic fauna of the middle-late Eocene Zagros Basin, Iran. Originally considered as a specimen of the fossil lophotid †Protolophotus, it is proposed hereby as a new genus and species †Babelichthys olneyi, gen. et sp. nov., differs from the other fossil lophotids by its relatively long and strongly projecting crest, suggesting a close relationship with the modern unicorn crestfish, Eumecichthys. This new taxon increases the diversity of the deep-sea teleost fauna to which it belongs, improving our understanding of the taxonomic composition of the early Cenozoic mesopelagic ecosystems.
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Affiliation(s)
- Donald Davesne
- Department of Earth Sciences, University of Oxford, Oxford, United Kingdom
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32
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Moreira DA, Buckup PA, Furtado C, Val AL, Schama R, Parente TE. Reducing the information gap on Loricarioidei (Siluriformes) mitochondrial genomics. BMC Genomics 2017; 18:345. [PMID: 28472937 PMCID: PMC5418769 DOI: 10.1186/s12864-017-3709-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 04/19/2017] [Indexed: 01/11/2023] Open
Abstract
Background The genetic diversity of Neotropical fish fauna is underrepresented in public databases. This distortion is evident for the order Siluriformes, in which the suborders Siluroidei and Loricarioidei share equivalent proportion of species, although far less is known about the genetics of the latter clade, endemic to the Neotropical Region. Recently, this information gap was evident in a study about the structural diversity of fish mitochondrial genomes, and hampered a precise chronological resolution of Siluriformes. It has also prevented molecular ecology investigations about these catfishes, their interactions with the environment, responses to anthropogenic changes and potential uses. Results Using high-throughput sequencing, we provide the nearly complete mitochondrial genomes for 26 Loricariidae and one Callichthyidae species. Structural features were highly conserved. A notable exception was identified in the monophyletic clade comprising species of the Hemiancistrus, Hypostomini and Peckoltia-clades, a ~60 nucleotide-long deletion encompassing the seven nucleotides at the 3′ end of the Conserved Sequence Block (CSB) D of the control region. The expression of mitochondrial genes followed the usual punctuation pattern. Heteroplasmic sites were identified in most species. The retrieved phylogeny strongly corroborates the currently accepted tree, although bringing to debate the relationship between Schizolecis guntheri and Pareiorhaphis garbei, and highlighting the low genetic variability within the Peckoltia-clade, an eco-morphologically diverse and taxonomically problematic group. Conclusions Herein we have launched the use of high-throughput mitochondrial genomics in the studies of the Loricarioidei species. The new genomic resources reduce the information gap on the molecular diversity of Neotropical fish fauna, impacting the capacity to investigate a variety of aspects of the molecular ecology and evolution of these fishes. Additionally, the species showing the partial CSB-D are candidate models to study the replication and transcription of vertebrate mitochondrial genome. Electronic supplementary material The online version of this article (doi:10.1186/s12864-017-3709-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Daniel Andrade Moreira
- Laboratório de Toxicologia Ambiental, Escola Nacional de Saúde Pública (ENSP), Fundação Oswaldo Cruz (FIOCRUZ), Av. Brasil, 4036, Rio de Janeiro, Brasil.,Laboratório de Biologia Computacional e Sistemas, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Av. Brasil, 4365, Rio de Janeiro, Brasil
| | - Paulo Andreas Buckup
- Departamento de Vertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro (UFRJ), Quinta da Boa Vista, Rio de Janeiro, RJ, Brasil
| | - Carolina Furtado
- Unidade de Genômica, Instituto Nacional do Câncer (INCA), Rua André Cavalcanti, 37, Rio de Janeiro, Brasil
| | - Adalberto Luis Val
- Laboratório de Ecofisiologia e Evolução Molecular, Instituto Nacional de Pesquisas da Amazônia (INPA), Av. André Araújo, 2936, Manaus, Brasil
| | - Renata Schama
- Laboratório de Biologia Computacional e Sistemas, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Av. Brasil, 4365, Rio de Janeiro, Brasil
| | - Thiago Estevam Parente
- Laboratório de Toxicologia Ambiental, Escola Nacional de Saúde Pública (ENSP), Fundação Oswaldo Cruz (FIOCRUZ), Av. Brasil, 4036, Rio de Janeiro, Brasil. .,Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Av. Brasil, 4365, Rio de Janeiro, Brasil.
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Marques C, Faustino F, Bertolucci B, Paes MDCF, Valentin FN, Nakaghi LSO. Structural and ultrastructural description of larval development in Zungaro jahu. ZYGOTE 2017; 25:149-59. [PMID: 28137338 DOI: 10.1017/S0967199416000423] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The Zungaro jahu is an important large catfish of the order Siluriformes that is in danger of extinction due to habitat destruction. Studies on its biology are scarce and the majority relates only to nutrition or parasitology. In order to provide greater information on its morphology and aid husbandry and larviculture studies, the aim of this study was to characterize larval development in Z. jahu from hatching to total yolk absorption. Samples were collected at pre-established times, processed, stained, and analyzed under stereomicroscopy, light microscopy, and scanning electron microscopy. Total yolk absorption was observed by 60 hours post-hatching (hph) at 28.75 ± 0.59°C. The newly hatched larvae showed slightly pigmented body, the outline of the digestive tract, evident eyes, and the first swimming movements. Mouth opening took place at 12 hph and the connection between the oral cavity and the rudimentary intestine was observed at 24 hph. Were analyzed the main larval organs and systems: digestive organs, heart, gill arches, sensory system, thyroid, kidney, and swim bladder. As the larvae grew, these organs became more mature and functional. The development of the sensory and feeding structures was observed at the start of larval development, and thus before depletion of endogenous energy reserves, the strategy for this species is to increase its chances of survival in the environment.
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Nóbrega RH, de Jesus LWO, Honji RM, Borella MI. Characterization of gonadotropic cells during continuous and seasonal spermatogenesis of two freshwater fish species: a histochemical and immunohistochemical study. Fish Physiol Biochem 2017; 43:51-63. [PMID: 27492246 DOI: 10.1007/s10695-016-0267-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 09/12/2015] [Accepted: 08/01/2016] [Indexed: 06/06/2023]
Abstract
This work describes gonadotropic (GtH) cells and their morphological and immunohistochemical changes during the spermatogenic cycle of Serrasalmus maculatus (continuous spermatogenesis) and Pimelodus maculatus (seasonal spermatogenesis). GtH cells, widely distributed in the proximal pars distalis of the adenohypophysis, were characterized as round-shaped cells with eccentric nucleus, and cytoplasm with basophilic secretory granules and a variable number of vacuoles for both species. Immunohistochemistry against β-follicle-stimulating hormone (Fsh) and β-luteinizing hormone (Lh) in adjacent sections showed two separated GtH-producing cell populations, and a third population where both GtHs are expressed in the same cell for both species. In the seasonal spermatogenesis of P. maculatus, GtH cells seemed to be more abundant during developing and spawning capable phases. In contrast, no cyclic changes were detected in the continuous spermatogenesis of S. maculatus, except for the strong immunoreaction for Fsh and Lh in males with intense spermiogenesis. We conclude that changes reported here might reflect the type of spermatogenic cycle (seasonal or continuous) which are under different regulatory mechanisms (environmental and internal cues) controlling the reproduction in these species.
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Affiliation(s)
- Rafael Henrique Nóbrega
- Department of Morphology, Institute of Biosciences, São Paulo State University, UNESP, Botucatu, Brazil
| | - Lázaro Wender Oliveira de Jesus
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, USP, São Paulo, Brazil
| | - Renato Massaaki Honji
- Department of Physiology, Institute of Biosciences, University of São Paulo, USP, São Paulo, Brazil
| | - Maria Inês Borella
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, USP, São Paulo, Brazil.
- Departamento de Biologia Celular e do Desenvolvimento, Instituto de Ciências Biomédicas, Universidade de São Paulo, Av. Professor Lineu Prestes 1524, São Paulo, SP, 05508-000, Brazil.
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Portnoy DS, Willis SC, Hunt E, Swift DG, Gold JR, Conway KW. Molecular phylogenetics of New World searobins (Triglidae; Prionotinae). Mol Phylogenet Evol 2016; 107:382-387. [PMID: 27908740 DOI: 10.1016/j.ympev.2016.11.017] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 11/23/2016] [Accepted: 11/26/2016] [Indexed: 10/20/2022]
Abstract
Phylogenetic relationships among members of the New World searobin genera Bellator and Prionotus (Family Triglidae, Subfamily Prionotinae) and among other searobins in the families Triglidae and Peristediidae were investigated using both mitochondrial and nuclear DNA sequences. Phylogenetic hypotheses derived from maximum likelihood and Bayesian methodologies supported a monophyletic Prionotinae that included four well resolved clades of uncertain relationship; three contained species in the genus Prionotus and one contained species in the genus Bellator. Bellator was always recovered within the genus Prionotus, a result supported by post hoc model testing. Two nominal species of Prionotus (P. alatus and P. paralatus) were not recovered as exclusive lineages, suggesting the two may comprise a single species. Phylogenetic hypotheses also supported a monophyletic Triglidae but only if armored searobins (Family Peristediidae) were included. A robust morphological assessment is needed to further characterize relationships and suggest classification of clades within Prionotinae; for the time being we recommend that Bellator be considered a synonym of Prionotus. Relationships between armored searobins (Family Peristediidae) and searobins (Family Triglidae) and relationships within Triglidae also warrant further study.
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Affiliation(s)
- David S Portnoy
- Marine Genomics Laboratory, Department of Life Sciences, Texas A&M University-Corpus Christi, 6300 Ocean Drive, Corpus Christi, TX 78412, USA.
| | - Stuart C Willis
- Marine Genomics Laboratory, Department of Life Sciences, Texas A&M University-Corpus Christi, 6300 Ocean Drive, Corpus Christi, TX 78412, USA
| | - Elizabeth Hunt
- Marine Genomics Laboratory, Department of Life Sciences, Texas A&M University-Corpus Christi, 6300 Ocean Drive, Corpus Christi, TX 78412, USA
| | - Dominic G Swift
- Marine Genomics Laboratory, Department of Life Sciences, Texas A&M University-Corpus Christi, 6300 Ocean Drive, Corpus Christi, TX 78412, USA
| | - John R Gold
- Marine Genomics Laboratory, Department of Life Sciences, Texas A&M University-Corpus Christi, 6300 Ocean Drive, Corpus Christi, TX 78412, USA
| | - Kevin W Conway
- Department of Wildlife and Fisheries Sciences and Biodiversity Research and Teaching Collections, Texas A&M University, College Station, TX 77843, USA
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Melo BF, Benine RC, Britzke R, Gama CS, Oliveira C. An inventory of coastal freshwater fishes from Amapá highlighting the occurrence of eight new records for Brazil. Zookeys 2016; 606:127-40. [PMID: 27551225 PMCID: PMC4978014 DOI: 10.3897/zookeys.606.9297] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 07/07/2016] [Indexed: 11/12/2022] Open
Abstract
The Amazon Basin occupies a vast portion of northern South America and contains some of the highest species richness in the world. The northern Brazilian state of Amapá is delimited by the Amazonas River to the south, the Oyapock River to the northern boundary with French Guyana, and the Atlantic northeastern coast to Amazon estuary. Despite several expeditions to the Amazon in recent decades, little is known about the freshwater ichthyofauna from Amapá, with records limited to local inventories and species descriptions. This paper presents a compilation of the freshwater fish diversity sampled in fifteen sites covering two major Amapá ecoregions during the dry season of 2015. 120 species representing eight orders and 40 families are reported upon in this work. Eight species appear for the first time in the Brazilian territory providing new information for future conservation status evaluations.
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Affiliation(s)
- Bruno F. Melo
- Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Rubião Jr. s/n. 18618-689, Botucatu, São Paulo, Brazil
- Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington DC, USA
| | - Ricardo C. Benine
- Departamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista, Rubião Jr. s/n. 18618-689, Botucatu, São Paulo, Brazil
| | - Ricardo Britzke
- Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Rubião Jr. s/n. 18618-689, Botucatu, São Paulo, Brazil
- Laboratorio de Acuacultura, Facultad de Ciencias Agropecuarias, Universidad Técnica de Machala, Av. Panamericana Km. 4½ Vía Machala-Pasaje, 070150, Machala, El Oro, Ecuador
| | - Cecile S. Gama
- Instituto de Pesquisas Científicas e Tecnológicas do Estado do Amapá, Av. Feliciano Coelho, 1509, Trem, 68900-260, Macapá, Amapá, Brazil
| | - Claudio Oliveira
- Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Rubião Jr. s/n. 18618-689, Botucatu, São Paulo, Brazil
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Price SA, Friedman ST, Wainwright PC. How predation shaped fish: the impact of fin spines on body form evolution across teleosts. Proc Biol Sci 2015; 282:20151428. [PMID: 26559954 PMCID: PMC4685802 DOI: 10.1098/rspb.2015.1428] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [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: 06/15/2015] [Accepted: 10/15/2015] [Indexed: 11/12/2022] Open
Abstract
It is well known that predators can induce morphological changes in some fish: individuals exposed to predation cues increase body depth and the length of spines. We hypothesize that these structures may evolve synergistically, as together, these traits will further enlarge the body dimensions of the fish that gape-limited predators must overcome. We therefore expect that the orientation of the spines will predict which body dimension increases in the presence of predators. Using phylogenetic comparative methods, we tested this prediction on the macroevolutionary scale across 347 teleost families, which display considerable variation in fin spines, body depth and width. Consistent with our predictions, we demonstrate that fin spines on the vertical plane (dorsal and anal fins) are associated with a deeper-bodied optimum. Lineages with spines on the horizontal plane (pectoral fins) are associated with a wider-bodied optimum. Optimal body dimensions across lineages without spines paralleling the body dimension match the allometric expectation. Additionally, lineages with longer spines have deeper and wider body dimensions. This evolutionary relationship between fin spines and body dimensions across teleosts reveals functional synergy between these two traits and a potential macroevolutionary signature of predation on the evolutionary dynamics of body shape.
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Affiliation(s)
- S A Price
- Department of Evolution and Ecology, University of California Davis, 1 Shields Avenue, Davis, CA 95616, USA
| | - S T Friedman
- Department of Evolution and Ecology, University of California Davis, 1 Shields Avenue, Davis, CA 95616, USA
| | - P C Wainwright
- Department of Evolution and Ecology, University of California Davis, 1 Shields Avenue, Davis, CA 95616, USA
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Abstract
The swimbladder plays an important role in buoyancy regulation but is typically reduced or even absent in benthic freshwater fishes that inhabit fast flowing water. Here, we document, for the first time, a remarkable example of swimbladder sexual dimorphism in the highly rheophilic South Asian torrent minnows (Psilorhynchus). The male swimbladder is not only much larger than that of the female (up to five times the diameter and up to 98 times the volume in some cases), but is also structurally more complex, with multiple internal septa dividing it into smaller chambers. Males also exhibit a strange organ of unknown function or homology in association with the swimbladder that is absent in females. Extreme sexual dimorphism of non-gonadal internal organs is rare among vertebrates and the swimbladder sexual dimorphisms that we describe for Psilorhynchus are unique among fishes.
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Affiliation(s)
- Kevin W Conway
- Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Ralf Britz
- Natural History Museum, Cromwell Road, London SW7 5BD, UK
| | - Dustin S Siegel
- Department of Biology, Southeast Missouri State University, Cape Girardeau, MO 63701, USA
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Martinez E, Hendricks E, Menze MA, Torres JJ. Physiological performance of warm-adapted marine ectotherms: Thermal limits of mitochondrial energy transduction efficiency. Comp Biochem Physiol A Mol Integr Physiol 2015; 191:216-225. [PMID: 26297983 DOI: 10.1016/j.cbpa.2015.08.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 03/11/2015] [Revised: 06/19/2015] [Accepted: 08/11/2015] [Indexed: 01/22/2023]
Abstract
Thermal regimes in aquatic systems have profound implications for the physiology of ectotherms. In particular, the effect of elevated temperatures on mitochondrial energy transduction in tropical and subtropical teleosts may have profound consequences on organismal performance and population viability. Upper and lower whole-organism critical temperatures for teleosts suggest that subtropical and tropical species are not susceptible to the warming trends associated with climate change, but sub-lethal effects on energy transduction efficiency and population dynamics remain unclear. The goal of the present study was to compare the thermal sensitivity of processes associated with mitochondrial energy transduction in liver mitochondria from the striped mojarra (Eugerres plumieri), the whitemouth croaker (Micropogonias furnieri) and the palometa (Trachinotus goodei), to those of the subtropical pinfish (Lagodon rhomboides) and the blue runner (Caranx crysos). Mitochondrial function was assayed at temperatures ranging from 10 to 40°C and results obtained for both tropical and subtropical species showed a reduction in the energy transduction efficiency of the oxidative phosphorylation (OXPHOS) system in most species studied at temperatures below whole-organism critical temperature thresholds. Our results show a loss of coupling between O2 consumption and ATP production before the onset of the critical thermal maxima, indicating that elevated temperature may severely impact the yield of ATP production per carbon unit oxidized. As warming trends are projected for tropical regions, increasing water temperatures in tropical estuaries and coral reefs could impact long-term growth and reproductive performance in tropical organisms, which are already close to their upper thermal limit.
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Affiliation(s)
- Eloy Martinez
- College of Marine Science, University of South Florida, Saint Petersburg, FL 33701, USA.
| | - Eric Hendricks
- Department of Biological Science, Eastern Illinois University, Charleston, IL 61920, USA
| | - Michael A Menze
- Department of Biological Science, Eastern Illinois University, Charleston, IL 61920, USA
| | - Joseph J Torres
- College of Marine Science, University of South Florida, Saint Petersburg, FL 33701, USA
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Near TJ, Dornburg A, Eytan RI, Keck BP, Smith WL, Kuhn KL, Moore JA, Price SA, Burbrink FT, Friedman M, Wainwright PC. Phylogeny and tempo of diversification in the superradiation of spiny-rayed fishes. Proc Natl Acad Sci U S A 2013; 110:12738-43. [PMID: 23858462 DOI: 10.1073/pnas.1304661110] [Citation(s) in RCA: 298] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Spiny-rayed fishes, or acanthomorphs, comprise nearly one-third of all living vertebrates. Despite their dominant role in aquatic ecosystems, the evolutionary history and tempo of acanthomorph diversification is poorly understood. We investigate the pattern of lineage diversification in acanthomorphs by using a well-resolved time-calibrated phylogeny inferred from a nuclear gene supermatrix that includes 520 acanthomorph species and 37 fossil age constraints. This phylogeny provides resolution for what has been classically referred to as the "bush at the top" of the teleost tree, and indicates acanthomorphs originated in the Early Cretaceous. Paleontological evidence suggests acanthomorphs exhibit a pulse of morphological diversification following the end Cretaceous mass extinction; however, the role of this event on the accumulation of living acanthomorph diversity remains unclear. Lineage diversification rates through time exhibit no shifts associated with the end Cretaceous mass extinction, but there is a global decrease in lineage diversification rates 50 Ma that occurs during a period when morphological disparity among fossil acanthomorphs increases sharply. Analysis of clade-specific shifts in diversification rates reveal that the hyperdiversity of living acanthomorphs is highlighted by several rapidly radiating lineages including tunas, gobies, blennies, snailfishes, and Afro-American cichlids. These lineages with high diversification rates are not associated with a single habitat type, such as coral reefs, indicating there is no single explanation for the success of acanthomorphs, as exceptional bouts of diversification have occurred across a wide array of marine and freshwater habitats.
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