La segona línia d'investigació de la Unitat de Zoologia Marina se centra en estudis parasitològics de vertebrats marins (mamífers, tortugues i peixos), incloent-hi aspectes taxonòmics (tant convencionals com moleculars), ecològics i evolutius. Mereixen especial esment els nostres estudis pioners sobre els determinants ecològics i evolutius de les comunitats paràsites de cetacis i tortugues marines.

Alguns dels estudis realitzats pel nostre grup han utilitzat dades parasitàries per a l'obtenció d'informació sobre les migracions i estructura social de poblacions de mamífers marins. També estem portant cap estudis aplicats en els camps de la pesca i l'aqüicultura, que inclouen estudis de la distribució de larves de nematodes anisákidos en peixos de consum humà, parasitologia de seriola Seriola dumerili i tonyina atlàntica Thunnus thynnus  en cultius i d'altres espècies d'interés en l'aqüicultura mediterrània, i la utilització d'informació parasitària per a la predicció de l'origen de captures pesqueres. La Unitat de Zoologia Marina participa en un consorci de sis laboratoris, finançat pel 5é Programa Marc, en el desenvolupament i optimització de mètodes per a la determinació de la localitat d'eclosió i de captura de bacallans (CODTRACE). La nostra unitat va contribuir en aquest projecte desenvolupant tècniques basades en l'anàlisi de comunitats paràsites.

• Pool, R.; Romero-Rubira, C.; Raga, J.A.; Fernández, M.; Aznar, F.J. (2021) Determinants of lungworm specificity in five species of cetacean in the western Mediterranean. Parasites & Vectors, 14: 1-14. https://doi.org/10.1186/s13071-021-04629-1
• Palacios Abella, J.F.; Montero, F.E.; Merella, P.; Mele, S.; Raga, J.A.; Repullés-Albelda, A. (2021) Cardicola mediterraneus n. sp. (Trematoda, Aporocotylidae): a new species infecting the gilthead seabream, Sparus aurata L., from the Western Mediterranean Sea. Parasitology Research, 120: 1949-1963. https://doi.org/10.1007/s00436-021-07143-6
• Ebert, M.B., Fernández, M., Valente, A.L.S., Cremer, M.J., de Castilho, P.V., da Silva, R. J. (2021). Ascocotyle longa (Digenea: Heterophyidae) infecting dolphins from the Atlantic Ocean. Parasitology Research, 120: 347-353. https://doi.org/10.1007/s00436-020-06956-1
• Pons-Bordas, C., Hazenberg, A., Hernandez-Gonzalez, A., Pool, R. V., Covelo, P., Sánchez-Hermosin, P., López, A, C. Saavedra, C., Fraija-Fernández, N., Fernández, M., Aznar, F. J. (2020). Recent increase of ulcerative lesions caused by Anisakis spp. in cetaceans from the north-east Atlantic. Journal of Helminthology, 94: e127, 1–7. https://doi.org/10.1017/S0022149X20000115
• Wee, N.Q., Cutmore, S.C., Pérez-del-Olmo, A., Cribb, T.H. (2020). First steps to restructuring the problematic genus Lasiotocus Looss, 1907 (Digenea: Monorchiidae) with the proposal of four new genera. Parasitology International, 79, 102164. https://doi.org/10.1016/j.parint.2020.102164
• Pool, R.; Chandradeva, N.; Gkafas, G.; Raga, J.A.; Fernández, M.; Aznar, F.J. (2020). Transmission and predictors of burden of lungworms of the striped dolphin (Stenella coeruleoalba) in the western Mediterranean. Journal of Wildlife Diseases, 56(1): 86-191. https://doi.org/10.7589/2018-10-242
• Van Bressem, M.F.; Duignan, P.; Raga, J.A.; Van Waerebeek, K.; Fraija-Fernández, M.; Plön, S. (2020). Cranial crassicaudiasis in Indian Ocean humpback dolphins and Indo-Pacific bottlenose dolphins from South Africa is predominantly a disease of immature individuals. Diseases of Aquatic Organisms, 139: 93–102. https://doi.org/10.3354/dao03468
• Villora-Montero, M.; Pérez-Del-Olmo, A.; Georgieva, S.; Raga, J.A.; Montero, F.E. (2020). Considerations on the taxonomy and morphology of Microcotyle spp.: Redescription of M. erythrini van Beneden & Hesse, 1863 (Monogenea: Microcotylidae) and the description of a new species from D. dentex (L.) (Teleostei: Sparidae). Parasites & Vectors, 13: 45 https://doi.org/10.1186/s13071-020-3878-9
• Pool, R.; Fernández, M.; Chandradeva, N.; Raga, J.A.; Aznar, F.J. (2020).  The taxonomic status of Skrjabinalius guevarai Gallego and Selva, 1979, with the synonymy of Skrjabinalius Delyamure 1942 and Halocercus Baylis and Daubney, 1925. Systematic Parasitology, 97: 389–401. https://doi.org/10.1007/s11230-020-09921-9
• Hernández-Orts, J.S.; Brandão, M.; Georgieva, S.; Raga, J.A.; Crespo, E.A.; Luque, J.L.; Aznar, F.J. (2017). From mammals back to birds: host-switch of the acanthocephalan Corynosoma australe from pinnipeds to the Magellanic penguin Spheniscus magellanicus. PLoS ONE, 12(10): e0183809.
• Palacios-Abella, J.F., Rodríguez-Llanosa, J.; Villora-Montero, M.; Mele, S.; Raga, J.A., Montero, F.E. (2017) Diagnostic accuracy of the light microscope method to detect the eggs of Cardicola spp. in the gill filaments of the bluefin tuna. Veterinary Parasitology, 47: 26-32.
• Born-Torrijos, A.; Holzer, A.S.; Raga, J.A.; Van Beest, G.S.; Yoneva, A. (2017). Description of embryonic development and ultrastructure in miracidia of Cardiocephaloides longicollis (Digenea, Strigeidae) in relation to active host finding strategy in a marine environment. Journal of Morphology, 278: 1137-1148
• Fraija-Fernández, N.; Fernández, M.; Gozalbes, P.; Revuelta, O.; Raga, J.A.; Aznar F.J. (2017). Living on a harsh habitat: epidemiology of the whale louse, Syncyamus aequus (Cyamidae), in striped dolphins from the western Mediterranean. Journal of Zoology, 303: 199–206, DOI: 10.1111/jzo.12482
• Fraija-Fernández, N.; Fernández, M.; Lehnert, K.; Raga, J.A.; Siebert, U.; Aznar F.J. (2017). Long-distance travellers: phylogeography of a generalist parasite, Pholeter gastrophilus, from Cetaceans. PLoS ONE, 12(1): e0170184. doi:10.1371/journal.pone.0170184 
• Domènech, F.; Tomás, J.; Crespo-Picazo, J.L.; García-Parraga, D.; Raga, J.A.; Aznar F.J.  (2017). To swim or not to swim: potential transmission of Balaenophilus manatorum (Copepoda: Harpacticoida) in marine turtles. PLoS ONE, 12(1): e0170789. doi:10.1371/journal.pone.0170789
• Born-Torrijos, A.; Poulin, R.; Pérez-Del-Olmo, A.; Culurgioni, J.; Raga, J.A.; Holzer, A.S. (2016). An optimized multi-host trematode life cycle: fisheries discards enhance trophic parasite transmission to scavenging birds. International Journal for Parasitology, 46: 745–753
• Mateu, P.;  Nardi, V.; Fraija-Fernández, N.; Mattiucci, S.; Gil De Sola, L.;  Raga, J.A., Fernández, M.; Aznar, F.J (2015). The role of lantern fish (Myctophidae) and cephalopods in the life-cycle of cetacean parasites from western Mediterranean waters. Deep Sea Research I, 95: 115–121.
• Ahuir-Baraja, A.E.; Padros, F.; Palacio-Abella, J.F.; Raga, J.A.; Montero, F.E. (2015). Accacoelium contortum (Trematoda: Accacoeliidae) a trematode living as a monogenean: morphological and pathological implications. Parasites & Vectors, 8: 540  doi:10.1186/s13071-015-1162-1
• Fraija-Fernández, N.; Fernández, M.; Raga, J.A.; Aznar, F.J. (2015). Life-history trade-offs in a generalist digenean from cetaceans: the role of host specificity and environmental factors.  Parasites & Vectors, 8(1): 659  doi: 10.1186/s13071-015-1273-8
• Carrillo, J.M.; Overstreet, R.; Raga, J.A.; Aznar, F.J. (2015). Living on the edge: Settlement patterns by the symbiotic barnacle Xenobalanus globicipitis on small cetaceans. PLoS ONE, 10 (6): e0127367. doi:10.1371/journal.pone.0127367
• Fraija-Fernández, N.; Olson, P.D.; Crespo, E.A.; Raga, J.A.; Aznar, F.; Fernandez, M. (2015). Independent host capture of Cetaceans by Digenean parasites inferred from ribosomal DNA.  International Journal for Parasitology, 45: 167–173.
• Born-Torrijos, A.; Raga, J.A.; Holzer, A. (2015). Trematode maturation patterns in a migratory snail host: What happens during upshore residency in a Mediterranean lagoon? Parasitology Research, 115: 575-585. doi:10.1007/s00436-015-4774-7.
• Sánchez-García, N.; Raga, J. A.; Montero, F. E. (2014) Risk assessment for parasites in cultures of Diplodus puntazzo (Sparidae) in the Western Mediterranean: Prospects of cross infection with Sparus aurata. Veterinary Parasitology, 204 (3-4): 120-133.
• Born-Torrijos, A.; Holzer, A.; Raga, J.A.; Kostadinova, A. (2014) Same host, same lagoon, different transmission pathways: effects of exogenous factors on larval emergence in two marine digenean parasites. Parasitological Research, 113: 545-554.
• Fraija, N.; Aznar, F.J.; Raga, J.A.; Gibson, D.; Fernandez, M. (2014). A new brachycladiid species (Digenea) from Gervais’ beaked whale Mesoplodon europaeus in north-western Atlantic waters. Acta Parasitologica, 59 (3): 510–517.
• Mateu, P., Montero, F. E., Carrasson, M. (2014). Geographical variation in Metazoan parasites of the deep-sea fish Bathypterois mediterraneus Bauchot, 1962 (Osteichthyes: Ipnopidae) from the Western Mediterranean. Deep Sea Research I, 87: 24-29.
• Pérez-Del-Olmo A., Dallarés S., Carrassón M., Kostadinova A. (2014) A new species of Bathycreadium Kabata, 1961 (Digenea: Opecoelidae) from Phycis blennoides (Brünnich) (Gadiformes: Phycidae) in the western Mediterranean. Systematic Parasitology, 88, 233–244.
• Mateu, P., Raga, J.A., Fernández, M.; Aznar, F.J. (2014). Intestinal helminth fauna of striped dolphins (Stenella coeruleoalba) in the western Mediterranean: effects of host body length, age and sex. Marine Mammal Science, 30: 961-977.
• Hernandez-Orts, J.S.; Alama-Bermejo, G.; Crespo, E.A.; Raga, J.A.; Montero, F.E. (2014). A revision of the genus Neogrubea Dillon & Hargis, 1968 (Monogenea: Mazocraeidae), parasites of the gills of stromateoideis and percoideis (Teleostei: Perciformes): new morphological and molecular data from the Patagonian coast of Argentina. Systematic Parasitology 89: 59-72.
• Born-Torrijos, A.; Poulin, R.; Raga, J.A.; Holzer, A. (2014) Estimating trematode prevalence in snail hosts using a single-step duplex PCR: how badly does cercarial shedding underestimate infection rate? Parasites & Vectors, 7: 243. doi:10.1186/1756-3305-7-243.
• Balbuena JA, Míguez Lozano R, Blasco Costa I (2013) PACo: A Novel Procrustes Application to Cophylogenetic Analysis. PLoS ONE 8(4): e61048
• Alama-Bermejo, G.; Sima, R.; Raga, J.A.; Holzer, A.S. (2013). Understanding myxozoan infection dynamics in the sea: Seasonality and transmission of Ceratomyxa puntazzi. International Journal for Parasitology, 43: 771-780.
• García-Varela, M.; Pérez-Ponce De León, G., Aznar, F.J., Nadler, S.A. (2013). Phylogenetic relationship among genera of Polymorphidae (Acanthocephala), inferred from nuclear and mitochondrial gene sequences. Molecular Phylogenetics and Evolution, 68: 176-184.
• Hernández-Orts, J.S.; Aznar, F.J.; Blasco-Costa, I.; Garcia, N.A..; Víllora- Montero, M.; Crespo, E.A.; Raga, J.A.; Montero, F.E. (2013). Description, microhabitat selection and infection patterns of sealworm larvae (Pseudoterranova decipiens species complex, Nematoda: Ascaridoidea) in fishes from Patagonia, Argentina. Parasites & Vectors, 6: 1-15 doi:10.1186/1756-3305-6-252
• Hernandez-Orts, J.S.; Montero, F.E.; Juan-García, A.; García, N.A.; Crespo, E.A.; Raga, J.A.; Aznar, F.J. (2013). Intestinal helminth fauna of the South American sea lion, Otaria flavescens, and the South American fur seal, Arctocephalus australis, from northern Patagonia, Argentina. Journal of Helminthology, 87: 336–347. doi:10.1017/S0022149X12000454
• Leonardi, M.S.; Crespo, E.A.; Raga, J.A.; Aznar, F.J. (2013). Lousy mums: patterns of vertical transmission of an amphibious louse. Parasitology Research, 112: 3315-3323. doi:1007/s00436-013-3511-3.Georgieva S., Soldánová M., Pérez-Del-Olmo A., Dangel D.R., Sitko J., Sures B. & Kostadinova A. (2013) Molecular prospecting for European Diplostomum (Digenea: Diplostomidae) reveals cryptic diversity. International Journal for Parasitology, 43: 57–72.
• Gregori, M, FJ Aznar, E Abollo, A Roura, AF Gonzalez, S Pascual (2013). Nyctiphanes couchi as intermediate host for Rhadinorhynchus sp. (Acanthocephala, Echinorhynchidae) from NW Iberian Peninsula waters. Diseases of Aquatic Organisms, 105: 9-20.
• Georgieva S.; Soldánová M.; Pérez-del-Olmo A.; Dangel D.R.; Sitko J.; Sures B.; Kostadinova A. (2013). Molecular prospecting for European Diplostomum (Digenea: Diplostomidae) reveals cryptic diversity. International Journal for Parasitology 43: 57–72.
• Repullés-Albelda, A.; Kostadinova, A.; Raga J. A.; Montero, F. E. (2013) Seasonal population dynamics of Zeuxapta seriolae (Monogenea: Heteraxinidae) parasitizing Seriola dumerili (Carangidae) in the Western Mediterranean. Veterinary Parasitology, 193(1-3): 163-171.
• Quiñones, R.; Giovannini, A.; Raga, J.A.; Fernández, M. (2013). Intestinal helminth fauna of bottlenose dolphin, Tursiops truncatus, and common dolphin, Delphinus delphis, from the western Mediterranean. Journal of Parasitology, 99: 576–579.
• Pérez-del-Olmo A.; Kostadinova A.; Morand S. (2013). Metapopulation dynamics in marine parasites. In: The Balance of Nature and Human Impact. Ed.: Klaus Rohde.  Cambridge University Press. 413 pp.
• Alama-Bermejo, G.; Born, J.E.; Raga, J.A.; Holzer, A.S. (2012). 3D Morphology, Ultrastructure and Development of Ceratomyxa puntazzi Stages: First Insights into the Mechanisms of Motility and Budding in the Myxozoa. PLoS ONE 7(2): 1-15 e32679. doi:10.1371/journal.pone.0032679
• Repullés-Albelda, A.; Holzer, A.S.; Raga J. A.; Montero, F. E. (2012) Oncomiracidial development, survival and swimming behaviour of the monogenean Sparicotyle chrysophrii (Van Beneden and Hesse, 1863). Aquaculture, 338: 47-55.
• Hernandez-Orts, J.S.; Montero, F.E.; Crespo, E.A.; García, N.A.; Raga, J.A.; Aznar, F.J. (2012).  Ascocotyle (Ascocotyle) patagoniensis n. sp. (Trematoda: Heterophyidae) from the South American sea lion, Otaria flavescens, off Patagonia, Argentina. Journal of Parasitology, 98: 810–816.
• Leonardi, M.S.; Crespo, E.A.; Raga, J.A.; Fernández, M. (2012) Scanning Electron Microscopy of Antarctophthirus microchir (Phthiraptera: Anoplura: Echinophthiriidae): studying morphological adaptations to aquatic life. Micron, 43: 929-936.
• Santoro, M, Jm Kinsella, G. Galiero, B Degli Ubert, Fj. Aznar (2012). Helminth community structure in birds of prey (Accpitriformes and Falconiformes) in southern Italy. Journal of Parasitology 98: 22-29.
• Garcia-Varela, M, Fj Aznar, R. Perez-Rodriguez And G Pérez.Ponce De León (2012) Genetic and morphological characterization of Southwellina hispida Van Cleave 1925 (Acanthocephala:Polymorphidae) a parasite of fish-eating birds. Comparative Parasitology 79: 192-201.
• Aznar, F.J.; Hernández-Orts, J.S.; Suarez, A.A.; Garcia-Varela, M.; Raga, J.A.; Cappozzo, H.L. (2012). Assessing host-parasite specificity through coprological analysis: a case study with species of Corynosoma (Acanthocephala: Polymorphidae) from marine mammals. Journal of Helminthology, 86: 156-164.
• Born-Torrijos, A.; Kostadinova, A.; Raga, J.A.; Holzer, A. (2012). Molecular and morphological identification of larval opecoelids (Digenea: Opecoelidae) parasitising prosobranch snails in a Western Mediterranean lagoon. Parasitology International, 61: 450-460.
• Gregori, M., F.J. Aznar, E. Abollo, A. Roura, A.F. González, S. Pascual.  (2012) Nyctiphanes couchii as intermediate host for the acanthocephalan Bolbosoma balaenae in temperate waters of the NE Atlantic. Diseases of Aquatic Organisms, 99: 37-47
• Carreras-Aubets, M., Montero, F. E., Kostadinova, A., Carrassón, M. (2012). Parasite communities in the red mullet, Mullus barbatus L., respond to small-scale variation in the levels of polychlorinated biphenyls in the Western Mediterranean. Marine Pollution Bulletin 64(9): 1853-1860
• Míguez-Lozano R.; Pardo-Carranza T.V.; Blasco-Costa I.; Balbuena J.A. (2012) Spatial structure of helminth communities of the golden grey mullet, Liza aurata (Actinopterygii: Mugilidae), in the western Mediterranean. Journal of Parasitology 98: 904 – 912
• Leonardi, M.S.; Crespo, E.A.; Vales, D.G.; Feijoo, M.; Raga, J.A.; Aznar, F.J. (2012). Life begins when the sea lion is ashore: microhabitat use by a louse living on a diving mammal host. Bulletin of Entomological Research, 102: 444-452.
• Marzoug D.; Boutiba Z.; Kostadinova A.; Pérez-del-Olmo A. (2012). Effects of fishing on parasitism in a sparid fish: Contrasts between two areas of the Western Mediterranean. Parasitology International 61: 414–420.
• Hernández-Orts, J.S; Alama-Bermejo, G.; Crespo, E.A.; García, N.A.; Raga, J.A.; Montero, F.E. (2012) Breizacanthus aznari n. sp. (Acanthocephala: Arhythmacanthidae) from the banded cusk-eel Raneya brasiliensis (Ophidiiformes: Ophidiidae) from the Patagonian coast in Argentina. Folia Parasitologica, 59: 264–271.
• Hernández-Orts, J.S.; Alama-Bermejo,  G.; Carrillo, J.M.; García, N.A.; Crespo, E.A.; Raga, J.A.; Montero, F.E. (2012). Aporocotyle mariachristinae n. sp., and A. ymakara Villalba & Fernández, 1986 (Digenea: Aporocotylidae) of the pink cusk-eel, Genypterus blacodes (Ophidiiformes: Ophidiidae) from Patagonia, Argentina. Parasite, 19: 319-330.
• Hernandez-Orts, J.S.; Timi, J.T.; Raga, J.A.; García-Varela, M.; Crespo, E.A.; Aznar, F.J. (2012). Patterns of trunk spine growth in two congeneric Acanthocephalan species: investment on attachment may differ between sexes and species. Parasitology, 139: 945-955.
• Santoro, M., S. Mattiucci, J. Kinsella, F.J. Aznar, D.Giordano, F. Castagna, F. Pellegrino, G. Nascetti (2011) Helminth community structure of the Mediterranean gull (Ichthyaetus melanocephalus) in southern Italy. Journal of Parasitology, 97: 364‐366.
• Constenla M.; Carrassón M.; Moyà C.M.; Fernàndez-Chacón A.; Padrós F.; Repullés-Albelda, A.; Montero F.E. (2011) Parasitation by Bathycreadium elongatum (Digenea, Opecoelidae) in the pyloric caeca of Trachyrincus scabrus (Teleostei, Macrouridae). Diseases of Aquatic Organisms, 96(3): 239-247.
• Hodneland; K.; García; R.; Balbuena, J.A.; Zarza, C.; Fouz, B. (2011). Real-time RT-PCR detection of betanodavirus in naturally and experimentally infected fish from Spain. Journal of Fish Diseases, 34:189 – 202
• Alama-Bermejo, G.; Raga, J.A.; Holzer, A.S. (2011). Host-parasite relationship of Ceratomyxa puntazzi n. sp. (Myxozoa: Myxosporea) and sharpsnout seabream Diplodus puntazzo (Walbaum, 1792) from the Mediterranean with first data on ceratomyxid host specificity in sparids. Veterinary Parasitology, 182: 181-192.
• Pérez-del-Olmo A.; Morand S.; Raga J.A.; Kostadinova A. (2011). Abundance-variance and abundance-occupancy relationships in a marine host-parasite system: the importance of taxonomy and ecology of transmission. International Journal for Parasitology 41: 1361–1370.
• Repullés-Albelda, A.; Raga J. A.; Montero, F.E. (2011) Post-larval development of the microcotylid monogenean Sparicotyle chrysophrii (Van Beneden and Hesse, 1863): comparison with species of Microcotylidae and Heteraxinidae. Parasitology International, 60(4): 512-520.
• Sánchez-García, N.; Padrós, F.; Raga, J. A.; Montero, F. E. (2011) Comparative study of three attachment mechanisms of three Diplectanid Monogeneans. Aquaculture, 318(3-4): 290-299.
• Montero, F.E.; Kostadinova, A.; Raga, J.A (2009) Development and habitat selection of a new sanguinicolid disease agent of cultured greater amberjack, Seriola dumerili, in the Mediterranean. Aquaculture, 288(1-2): 132-139.
• Pérez-del-Olmo A.; Fernández M.; Raga J.A.; Kostadinova A.; Morand S. (2009). Not everything is everywhere: the distance-decay of similarity in a marine host-parasite system. Journal of Biogeography 36: 200–209.
• Perdiguero-Alonso, D.; Montero, F.E.; Kostadinova, A.; Raga, J.A.; Barrett, J. (2008) Random Forests, a novel approach for discrimination of fish populations using parasites as biological tags. International Journal for Parasitology, 38(12): 1425-1434.
• Holzer, A.S.; Montero, F.E.; Repullés, A.; Nolan, M.J.; Sitja-Bobadilla, A.; Alvarez-Pellitero, P.; Zarza, C.; Raga, J.A. Cardicola aurata sp. n. (Digenea: Sanguinicolidae) from Mediterranean Sparus aurata L. (Teleostei: Sparidae) and its unexpected phylogenetic relationship with Paradeontacylix McIntosh, 1934. Parasitology International, 57(4): 472-482
• Pérez-del-Olmo A.; Fernández M.; Raga J.A.; Kostadinova A. & Poulin R. (2008). Halfway up the trophic chain: development of parasite communities in the sparid fish Boops boops. Parasitology, 135: 257–268.
• Montero, F.E.; Crespo, S., Padrós, F.; De la Gándara, F.; García, A.; Raga, J.A. (2004) Effects of the gill parasite Zeuxapta seriolae (Monogenea: Heteraxinidae) on the amberjack Seriola dumerili Risso (Teleostei: Carangidae). Aquaculture, 232: 153-163.
• Mateu, P.; Raga, J.A.; Aznar, F.J. (2011). Host specificity of Oschmarinella rochebruni and Brachycladium atlanticum (Digenea: Brachycladiidae) in five cetacean species from western Mediterranean waters. Journal of Helminthology, 85: 12–19.
• Alama-Bermejo, G.; Raga, J.A.; Holzer, A.S. (2011). Skoulekia meningialis n. gen., n. sp. (Digenea: Aporocotylidae Odhner, 1912) a parasite surrounding the brain of the Mediterranean common two-banded seabream Diplodus vulgaris (Geoffroy Saint-Hilaire, 1817) (Teleostei: Sparidae): Description, molecular phylogeny, habitat and pathology. Parasitology International, 60:  34–44.
• Blasco-Costa, I.; Balbuena, J.A.; Raga, J.A.; Kostadinova, A.; Olson, P.D. (2010).  Molecules and morphology reveal cryptic variation among digeneans infecting sympatric mullets in the Mediterranean. Parasitology 137, 287-302.
• Balbuena, J.A.; Raga, J.A. (2009). Parasites. En: L. Nollet & F. Toldra  (Eds.). Handbook of Seafood and Seafood Products Analysis, Chapter 31, 579-602, CRC Press/Taylor & Francis, Boca Raton.
• Montero, F.E.; Kostadinova, A.; Raga, J.A. (2009). Development and habitat selection of a new sanguinicolid parasite of cultured greater amberjack, Seriola dumerili, in the Mediterranean. Aquaculture, 288: 132-139.
• Alama-Bermejo, G.; Raga, J.A.; Holzer, A.S. (2009). Morphological and molecular comparison and redescription of the myxozoan parasite Unicapsula pflugfelderi Schubert et al., 1975 from two teleost hosts in the Mediterranean and a review of the genus Unicapsula spp. Journal of Fish Diseases, 32(4): 335-350.
• Pérez-Del-Olmo, A.; Montero, F.E.; Raga, J.A.; Fernández, M.; Kostadinova, A. (2009). Follow-up trends of parasite community alteration in a marine model fish after the Prestige oil-spill: Shifting baselines? Environmental Pollution, 157: 221-228.
• Holzer, A.S.; Montero, F.E.; Repullés-Albelda, A.; Nolan, M.; Sitja-Bobadilla, A.; Alvarez-Pellitero, P.; Zarza, C.; Raga J.A. (2008). Cardicola aurata sp. n. (Digenea: Sanguinicolidae) from Mediterranean Sparus aurata L. (Teleostei: Sparidae) and its unexpected phylogenetic relationship with Paradeontacylix McIntosh, 1934. Parasitology International, 57 (4), 472-482.
• Perdiguero-Alonso, D.; Montero, F.E.; Kostadinova, A.; Raga, J.A.; Barrett, J. (2008). Random Forests, a novel approach for discrimination of fish populations using parasites as biological tags. International Journal for Parasitology, 38: 1425-1434.
• Raga, J.A.; Fernandez, M..; Balbuena, J.A.; Aznar, F.J. (2008). Parasites. En: W.F. Perrin, H.G.M. Thewissen & B. Würsing (Eds.). Encyclopedia of Marine Mammals, Second Edition, Academic Press/ Elsevier Inc., San Diego, 821-830.
• Repullés-Albelda, A.; Montero, F.E.; Holzer, A.S; Ogawa, K.; Hutson, K.S.; Raga, J.A. (2008). Speciation of Paradeontacylix spp. (Sanguinicolidae) in Seriola dumerili with descriptions of two new species from the Mediterranean. Parasitology International, 57 (3): 405-414.
• Herreras, M.V.; Montero, F.E.; Marcogliese, D.J.; Raga, J. A.; Balbuena, J. A. (2007). Phenotypic trade-offs between egg number and egg size in three populations of marine Anisakid nematodes. Oikos, 116: 1737-1747.
• Pérez-Del Olmo, A..; Raga, J.A.;  Kostadinova, A.; Fernández, M.  (2007). Parasite communities in Boops boops (L.) (Sparidae) after the
• Prestige oil-spill: detectable alterations. Marine Pollution Bulletin, 54: 266-276.
• Aznar, F.J.; Fognani, P.; Balbuena, J.A.; Pietrobelli, M.; Raga, J.A. (2006). Distribution patterns of Pholeter gastrophilus (Digenea) in the stomach of four odontocete species: the role of the host digestive physiology. Parasitology, 133: 369-380.
• Aznar, F.J.; Perdiguero, D.; Pérez Del Olmo, A.; Repullés, A.; Agustí, C.; Raga, J.A. (2005). Changes in epizoite infections during cetacean die-offs: the mass mortality of Mediterranean striped dolphins, Stenella coeruleoalba, revisited. Diseases of Aquatic Organisms, 67: 239-247.
• Fernández, M.; Aznar, F.J.; Montero, F.E.; Raga, J.A. (2005). Endoparasites of the blue whiting, Micromesistius poutassou Risso, 1826, from North West Spain. Journal of Helminthology, 79: 15-21.
• Agustí, C.; Aznar, F.J.; Raga, J.A. (2005). Tetraphyllidean plerocercoids from Western Mediterranean cetaceans and other marine mammals around the world: a comprehensive morphological analysis. Journal of Parasitology, 91: 83-92.
• Agustí, C.; Aznar, F.J.; Olson, P.D.; Littlewood, D.T.J.; Kostadinova, A.; Raga, J.A. (2005). Morphological and molecular characterization of tetraphyllidean merocercoids (Platyhelminthes: Cestoda) of striped dolphins (Stenella coeruleoalba) from the Western Mediterranean. Parasitology, 130: 461–474.
• Agustí, C.; Aznar, F.J.; Raga, J.A. (2005). Microtriches of tetraphyllidean metacestodes from Western Mediterranean striped dolphins (Stenella coeruleoalba). Journal of Morphology, 265: 176-189.
• Montero FE, Crespo S, Padrós F, De La Gándara F, García A, Raga JA (2004). Effects of the gill parasite Zeuxapta seriolae (Monogenea: Heteraxinidae) on the amberjack Seriola dumerili Risso (Teleostei: Carangidae). Aquaculture, 232: 153-163.
• Raga JA, Aznar FJ, Balbuena JA, Fernández M (2002). Parasites. In: W.F. Perrin, B. Würsing & H.G.M. Thewissen (Eds.). Encyclopedia of Marine Mammals, Academic Press, San Diego, 867-876.
• Aznar FJ, Bush AO, Raga JA (2002). Variability of trunk spines in the Acanthocephalan Corynosoma cetaceum: the role of physical constraints. Invertebrate Biology, 121: 104-114.
• Herreras MV, Aznar FJ, Balbuena JA,  Raga JA (2000). Anisakid larvae in the musculature of the Argentinean Hake, Merluccius hubbsi. Journal of Food Protection, 63: 1141-1143.
• Aznar FJ, Bush AO, Fernández M, Raga JA (1999). Constructional morphology and mode of attachment of the trunk of Corynosoma cetaceum (Acanthocephala: Polymorphidae). Journal of Morphology, 241 (3): 237-249.
• Fernández M, Aznar FJ, Latorre A, Raga, JA (1998). Molecular phylogeny of the families Campulidae and Nasitrematidae (Trematoda). International Journal for Parasitology, 28: 767-775.
• Balbuena JA, Aznar FJ, Fernández M, Raga, JA (1995). The use of parasites as indicators of social structure and stock identity of marine mammals. In:AS Blix, L Walløe, Ø Ulltang (eds.), Whales, seals, fish and man. Elsevier Science, Amsterdam, pp. 133-139.
• Raga JA (1994). Parasitismus bei Cetacea. In: D Robineau, R Duguy, M Klima (eds.), Handbuch  der  Säugetiere Europas. Bd. 6/1. Aula‑Verlag, Wiesbaden, pp. 132-179.
• Balbuena JA, Raga JA (1994). Intestinal helminths as indicators of segregation and social structure of pods of pilot whales (Globicephala melas) off the Faroe Islands. Canadian Journal of  Zoology, 72: 443-448.
• Balbuena JA, Raga JA (1993). Intestinal helminth communities of the long‑finned pilot whale (Globicephala melas) off the Faroe Islands. Parasitology, 106: 327‑333.