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Carugati L, Melis R, Cariani A, Cau A, Crobe V, Ferrari A, Follesa MC, Geraci ML, Iglésias SP, Pesci P, Tinti F, Cannas R. Combined COI barcode‐based methods to avoid mislabelling of threatened species of deep‐sea skates. Anim Conserv 2021. [DOI: 10.1111/acv.12716] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- L. Carugati
- Department of Life and Environmental Sciences University of Cagliari Cagliari Italy
| | - R. Melis
- Department of Life and Environmental Sciences University of Cagliari Cagliari Italy
| | - A. Cariani
- Department of Biological, Geological and Environmental Sciences (BiGeA) University of Bologna Bologna Italy
| | - A. Cau
- Department of Life and Environmental Sciences University of Cagliari Cagliari Italy
| | - V. Crobe
- Department of Biological, Geological and Environmental Sciences (BiGeA) University of Bologna Bologna Italy
| | - A. Ferrari
- Department of Biological, Geological and Environmental Sciences (BiGeA) University of Bologna Bologna Italy
| | - M. C. Follesa
- Department of Life and Environmental Sciences University of Cagliari Cagliari Italy
| | - M. L. Geraci
- Department of Biological Geological and Environmental Sciences (BiGeA) – Marine biology and fisheries laboratory University of Bologna Fano (PU) Italy
- Institute for Biological Resources and Marine Biotechnologies (IRBIM) National Research Council (CNR) Mazara del Vallo (TP) Italy
| | - S. P. Iglésias
- Institut de Systématique, Evolution, Biodiversité (ISYEB) Muséum national d’Histoire naturelleCNRSSorbonne UniversitéEPHEUniversité des AntillesStation Marine de Concarneau Concarneau France
| | - P. Pesci
- Department of Life and Environmental Sciences University of Cagliari Cagliari Italy
| | - F. Tinti
- Department of Biological, Geological and Environmental Sciences (BiGeA) University of Bologna Bologna Italy
| | - R. Cannas
- Department of Life and Environmental Sciences University of Cagliari Cagliari Italy
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Scali V, Deidda F, Coluccia E, Cannas R, Melis R, Salvadori S. Parental species and hybrid descendants of Bacillus (Insecta Phasmatodea) show different patterns of highly amplified, colocalized ribosomal and telomeric sequences. The European Zoological Journal 2020. [DOI: 10.1080/24750263.2020.1764640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Affiliation(s)
- V. Scali
- Dipartimento di Biologia Geologia Ambiente, Università di Bologna, Bologna, Italia
| | - F. Deidda
- Dipartimento di Scienze della Vita e dell’Ambiente, Università di Cagliari, Cagliari, Italia
| | - E. Coluccia
- Dipartimento di Scienze della Vita e dell’Ambiente, Università di Cagliari, Cagliari, Italia
| | - R. Cannas
- Dipartimento di Scienze della Vita e dell’Ambiente, Università di Cagliari, Cagliari, Italia
| | - R. Melis
- Dipartimento di Scienze della Vita e dell’Ambiente, Università di Cagliari, Cagliari, Italia
| | - S. Salvadori
- Dipartimento di Scienze della Vita e dell’Ambiente, Università di Cagliari, Cagliari, Italia
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Bellodi A, Porcu C, Cannas R, Cau A, Marongiu MF, Mulas A, Vittori S, Follesa MC. Life-history traits of the long-nosed skate Dipturus oxyrinchus. J Fish Biol 2017; 90:867-888. [PMID: 27873321 DOI: 10.1111/jfb.13205] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 10/10/2016] [Indexed: 06/06/2023]
Abstract
This work investigates life-history traits of the long-nosed skate Dipturus oxyrinchus, which is a common by-catch in Sardinian waters. The reproductive variables were analysed from 979 specimens sampled during scientific and commercial hauls. Females (10·4-117·5 cm total length, LT ) attained larger sizes than males (14·5-99·5 cm LT ). To evaluate age and growth, a sub-sample of 130 individuals (76 females and 54 males) were used. The age was estimated by annuli counts of sectioned vertebral centra. Four models were used for the length-at-age data: the von Bertalanffy, the exponential, the Gompertz and the logistic functions. According to the Akaike's information criterion, the Gompertz model seemed to provide the best fitting curve (L∞ mean ± s.e.: 127·55 ± 4·90 cm, k: 0·14 ± 0·09, IP: 3·97 ± 0·90 years). The oldest female and male were aged 17 (115·5 cm LT ) and 15 years (96·0 cm LT ), respectively. Lengths at maturity were 103·5 cm for females and 91·0 cm for males, corresponding to 90% of the maximum observed length in both sexes. The monthly distribution of maturity stages highlighted an extended reproductive cycle, with spawning females and active males being present almost throughout the year, as confirmed by the gonado-somatic index. Ovarian fecundity reached a maximum of 26 yolked follicles with a mean ± s.e. size of 19·7 ± 6·5 mm.
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Affiliation(s)
- A Bellodi
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli 1, 09126, Cagliari, Italy
| | - C Porcu
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli 1, 09126, Cagliari, Italy
| | - R Cannas
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli 1, 09126, Cagliari, Italy
| | - Al Cau
- Department of Architecture, Design and Urban Development, University of Sassari, Palazzo Pou Salit, P.zza Duomo 6, 07041, Alghero, Italy
| | - M F Marongiu
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli 1, 09126, Cagliari, Italy
| | - A Mulas
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli 1, 09126, Cagliari, Italy
| | - S Vittori
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli 1, 09126, Cagliari, Italy
| | - M C Follesa
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli 1, 09126, Cagliari, Italy
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Cattaneo-Vietti R, Bo M, Cannas R, Cau A, Follesa C, Meliadò E, Russo GF, Sandulli R, Santangelo G, Bavestrello G. An overexploited Italian treasure: past and present distribution and exploitation of the precious red coral Corallium rubrum (L., 1758) (Cnidaria: Anthozoa). ACTA ACUST UNITED AC 2016. [DOI: 10.1080/11250003.2016.1255788] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - M. Bo
- DiSTAV, Università di Genova, Genova, Italy
| | - R. Cannas
- DiSVA, Università di Cagliari, Cagliari, Italy
| | - A. Cau
- DiSVA, Università di Cagliari, Cagliari, Italy
| | - C. Follesa
- DiSVA, Università di Cagliari, Cagliari, Italy
| | - E. Meliadò
- DiSTAV, Università di Genova, Genova, Italy
| | - G. F. Russo
- DiST, Università di Napoli Parthenope, Centro Direzionale, Napoli, Italy
| | - R. Sandulli
- DiST, Università di Napoli Parthenope, Centro Direzionale, Napoli, Italy
| | - G. Santangelo
- Department of Biology, Università di Pisa, Pisa, Italy
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Coluccia E, Deidda F, Cannas R, Lobina C, Cuccu D, Deiana AM, Salvadori S. Comparative cytogenetics of six Indo-Pacific moray eels (Anguilliformes: Muraenidae) by chromosomal banding and fluorescence in situ hybridization. J Fish Biol 2015; 87:634-645. [PMID: 26242690 DOI: 10.1111/jfb.12737] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 06/09/2015] [Indexed: 06/04/2023]
Abstract
A comparative cytogenetic analysis, using both conventional staining techniques and fluorescence in situ hybridization, of six Indo-Pacific moray eels from three different genera (Gymnothorax fimbriatus, Gymnothorax flavimarginatus, Gymnothorax javanicus, Gymnothorax undulatus, Echidna nebulosa and Gymnomuraena zebra), was carried out to investigate the chromosomal differentiation in the family Muraenidae. Four species displayed a diploid chromosome number 2n = 42, which is common among the Muraenidae. Two other species, G. javanicus and G. flavimarginatus, were characterized by different chromosome numbers (2n = 40 and 2n = 36). For most species, a large amount of constitutive heterochromatin was detected in the chromosomes, with species-specific C-banding patterns that enabled pairing of the homologous chromosomes. In all species, the major ribosomal genes were localized in the guanine-cytosine-rich region of one chromosome pair, but in different chromosomal locations. The (TTAGGG)n telomeric sequences were mapped onto chromosomal ends in all muraenid species studied. The comparison of the results derived from this study with those available in the literature confirms a substantial conservation of the diploid chromosome number in the Muraenidae and supports the hypothesis that rearrangements have occurred that have diversified their karyotypes. Furthermore, the finding of two species with different diploid chromosome numbers suggests that additional chromosomal rearrangements, such as Robertsonian fusions, have occurred in the karyotype evolution of the Muraenidae.
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Affiliation(s)
- E Coluccia
- Dipartimento di Scienze della Vita e dell'Ambiente, sezione Biologia Animale ed Ecologia, Università degli Studi di Cagliari, via T. Fiorelli, 1, 09126, Cagliari, Italy
| | - F Deidda
- Dipartimento di Scienze della Vita e dell'Ambiente, sezione Biologia Animale ed Ecologia, Università degli Studi di Cagliari, via T. Fiorelli, 1, 09126, Cagliari, Italy
| | - R Cannas
- Dipartimento di Scienze della Vita e dell'Ambiente, sezione Biologia Animale ed Ecologia, Università degli Studi di Cagliari, via T. Fiorelli, 1, 09126, Cagliari, Italy
| | - C Lobina
- Dipartimento di Scienze della Vita e dell'Ambiente, sezione Biologia Animale ed Ecologia, Università degli Studi di Cagliari, via T. Fiorelli, 1, 09126, Cagliari, Italy
| | - D Cuccu
- Dipartimento di Scienze della Vita e dell'Ambiente, sezione Biologia Animale ed Ecologia, Università degli Studi di Cagliari, via T. Fiorelli, 1, 09126, Cagliari, Italy
| | - A M Deiana
- Dipartimento di Scienze della Vita e dell'Ambiente, sezione Biologia Animale ed Ecologia, Università degli Studi di Cagliari, via T. Fiorelli, 1, 09126, Cagliari, Italy
| | - S Salvadori
- Dipartimento di Scienze della Vita e dell'Ambiente, sezione Biologia Animale ed Ecologia, Università degli Studi di Cagliari, via T. Fiorelli, 1, 09126, Cagliari, Italy
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Mulas A, Bellodi A, Cannas R, Cau A, Cuccu D, Marongiu MF, Porcu C, Follesa MC. Diet and feeding behaviour of longnosed skate Dipturus oxyrinchus. J Fish Biol 2015; 86:121-138. [PMID: 25557426 DOI: 10.1111/jfb.12551] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 09/17/2014] [Indexed: 06/04/2023]
Abstract
A total of 255 longnosed skate Dipturus oxyrinchus caught in Sardinian waters (central-western Mediterranean Sea), was analysed with respect to fish total length (LT ), season and depth, in order to provide information on diet and feeding behaviour. Specimens ranging from 93 to 1153 mm LT , were collected at depths between 121 and 671 m, during experimental trawl surveys carried out from 2005 to 2010. The diet comprised crustaceans [prey specific index of relative importance (%IPSRI ) = 72·69], teleosts (%IPSRI = 10·28) and molluscs (%IPSRI = 10·94). Levins' index (Bi ) showed a narrow niche breadth (Bi = 0·35). The mean ± s.e. trophic level (TL ) was 3·63 ± 0·50. The analysis showed major ontogenetic changes in the feeding behaviour. Early life stages were characterized by a benthic diet, which changed to benthopelagic during growth. Mysids, particularly Lophogaster typicus (%IPSRI = 34·51), were the main prey items of immature individuals, replaced by euphausiids, mainly Meganyctiphanes norvegica (%IPSRI = 13·19), in maturing fish. Crustaceans became less important in mature specimens, being replaced by molluscs (%IPSRI = 28·99) and teleosts (%IPSRI = 24·56). A concomitant increase of the TL was recorded (mean ± s.e. = 3·41 ± 0·44, 3·75 ± 0·54 and 4·28 ± 0·61 for immature, maturing and mature individuals). These feeding patterns ensured low levels of intraspecific competition. This study provides new information about the role that the D. oxyrinchus plays in the marine food chain and data now essential to formulate new and effective management plans for this species.
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Affiliation(s)
- A Mulas
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli 1, Cagliari 09126, Italy
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Cannas R, Marcias S, Sacco F, Cau A, Deiana AM. First isolation and characterization of genomic SSR markers for the giant red shrimp Aristaeomorpha foliacea (Risso, 1827). Genet Mol Res 2012; 11:2745-8. [PMID: 22930408 DOI: 10.4238/2012.august.17.1] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Fourteen microsatellite markers were isolated from the giant red shrimp Aristaeomorpha foliacea (Risso, 1827) using the FIASCO protocol (fast isolation by AFLP of sequences containing repeats). Polymorphism was assessed in 30 individuals from two localities of the western Mediterranean basin (N = 20 from Sardinia and N = 10 from Sicily); nine loci showed polymorphism with 2 to 19 alleles per locus (average: 8.9). Polymorphic information content ranged from 0.36 to 0.91, and the observed and expected heterozygosities ranged from 0.50 to 0.97 and from 0.47 to 0.93, respectively. Two loci showed significant deviation from Hardy-Weinberg equilibrium, and evidence of linkage disequilibrium was found for only one locus pair. These loci are the first to be characterized in A. foliacea and could be effective tools for the investigation of genetic diversity, population structure, and demographic connectivity, useful information for the management of this important commercial resource.
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Affiliation(s)
- R Cannas
- Department of Life Sciences and Environment, University of Cagliari, Cagliari, Italy.
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Sabatini A, Cannas R, Follesa MC, Palmas F, Manunza A, Matta G, Pendugiu AA, Serra P, Cau A. Genetic characterization and artificial reproduction attempt of endemic Sardinian troutSalmo truttaL., 1758 (Osteichthyes, Salmonidae): Experiences in captivity. ACTA ACUST UNITED AC 2011. [DOI: 10.1080/11250003.2010.497171] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Coluccia E, Cannas R, Cau A, Deiana AM, Salvadori S. B chromosomes in Crustacea Decapoda. Cytogenet Genome Res 2005; 106:215-21. [PMID: 15292594 DOI: 10.1159/000079290] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2003] [Accepted: 12/09/2003] [Indexed: 11/19/2022] Open
Abstract
Among crustacean Decapoda numerical chromosome variability is frequent, and it has been hypothesized that the presence of supernumerary chromosomes accounts for this variability. Thanks to the improvement of cytogenetic analysis by chromosomal banding techniques, supernumerary B chromosomes (Bs) have been demonstrated in Nephrops norvegicus, Homarus americanus,Palinurus elephas and P. mauritanicus, belonging to different crustacean families. In all four species Bs were variable in number, mainly heterochromatic and undigested by various endonucleases, and in meiosis they showed non-Mendelian segregation. Compared to the other chromosomes of the complement, the Bs are very small in almost all species, but some of them were very large in N. norvegicus.
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Affiliation(s)
- E Coluccia
- Dipartimento di Biologia Animale ed Ecologia, Università di Cagliari, Cagliari, Italy.
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Abstract
Early and late replication bandings have been obtained by in vitro BrdU incorporation in the Mediterranean Muraenidae species Muraena helena and Gymnothorax unicolor, and used to characterize their karyotypes. A comparative analysis of the banding patterns allowed to point out high karyotype similarity as well as chromosome rearrangements that occurred in karyotype evolution between these species.
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Affiliation(s)
- S Salvadori
- Dipartimento di Biologia Animale ed Ecologia, Università di Cagliari, Viale Poetto 1, 09126 Cagliari, Italy.
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Deiana AM, Cau A, Salvadori S, Coluccia E, Cannas R, Milia A, Tagliavini J. Major and 5S ribosomal sequences of the largemouth bass Micropterus salmoides (Perciformes, Centrarchidae) are localized in GC-rich regions of the genome. Chromosome Res 2000; 8:213-8. [PMID: 10841048 DOI: 10.1023/a:1009248828365] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Major and 5S ribosomal genes have been localized in the chromosomes of Micropterus salmoides. By C-banding, Ag-staining, CMA3-staining and 45S and 5S fluorescence in-situ hybridization (FISH), we demonstrate that the 45S and 5S ribosomal genes are clustered in two different chromosome pairs and both are located in heterochromatic GC-rich regions. PCR amplification and sequencing of the 5S intergenic non-transcribed sequences have allowed us to identify variability essentially due to a trinucleotide tandem repeat (GCT).
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Affiliation(s)
- A M Deiana
- Dipartimento di Biologia Animale ed Ecologia, Università di Cagliari, Italy.
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