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Phenotypic plasticity in haptoral structures of Ligophorus cephali (Monogenea: Dactylogyridae) on the flathead mullet (Mugil cephalus): A Geometric Morphometric Approach

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Phenotypic plasticity in haptoral structures of Ligophorus cephali (Monogenea: Dactylogyridae) on the flathead mullet (Mugil cephalus): A Geometric Morphometric Approach

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dc.contributor.author Rodríguez González, Abril
dc.contributor.author Míguez Lozano, Raúl
dc.contributor.author Llopis-Belenguer, Cristina
dc.contributor.author Balbuena, Juan Antonio
dc.date.accessioned 2015-04-21T06:57:26Z
dc.date.available 2015-04-21T06:57:26Z
dc.date.issued 2015
dc.identifier.citation Rodríguez González, Abril; Míguez Lozano, Raúl; Llopis-Belenguer, Cristina; Balbuena, Juan Antonio (2015) Phenotypic plasticity in haptoral structures of Ligophorus cephali (Monogenea: Dactylogyridae) on the flathead mullet (Mugil cephalus): A Geometric Morphometric Approach International Journal for Parasitology 45 5 295 303
dc.identifier.uri http://hdl.handle.net/10550/43255
dc.description.abstract Evaluating phenotypic plasticity in attachment organs of parasites can provide information on the capacity to colonise new hosts and illuminate evolutionary processes driving host specificity. We analysed the variability in shape and size of the dorsal and ventral anchors of Ligophorus cephali from Mugil cephalus by means of geometric morphometrics and multivariate statistics. We also assessed the morphological integration between anchors and between the roots and points in order to gain insight into their functional morphology. Dorsal and ventral anchors showed a similar gradient of overall shape variation, but the amount of localised changes was much higher in the former. Statistical models describing variations in shape and size revealed clear differences between anchors. The dorsal anchor/bar complex seems more mobile than the ventral one in Ligophorus, and these differences may reflect different functional roles in attachment to the gills. The lower residual variation associated with the ventral anchor models suggests a tighter control of their shape and size, perhaps because these anchors seem to be responsible for firmer attachment and their size and shape would allow more effective responses to characteristics of the microenvironment within the individual host. Despite these putative functional differences, the high level of morphological integration indicates a concerted action between anchors. In addition, we found a slight, although significant, morphological integration between roots and points in both anchors, which suggests that a large fraction of the observed phenotypic variation does not compromise the functional role of anchors as levers. Given the low level of genetic variation in our sample, it is likely that much of the morphological variation reflects host-driven plastic responses. This supports the hypothesis of monogenean specificity through host-switching and rapid speciation. The present study demonstrates the potential of geometric morphometrics to provide new and previously unexplored insights into the functional morphology of attachment and evolutionary processes of host¿parasite coevolution.
dc.language.iso eng
dc.relation.ispartof International Journal for Parasitology, 2015, vol. 45, num. 5, p. 295-303
dc.subject Parasitologia veterinària
dc.title Phenotypic plasticity in haptoral structures of Ligophorus cephali (Monogenea: Dactylogyridae) on the flathead mullet (Mugil cephalus): A Geometric Morphometric Approach
dc.type journal article es_ES
dc.date.updated 2015-04-21T06:57:26Z
dc.identifier.doi 10.1016/j.ijpara.2015.01.005
dc.identifier.idgrec 102134
dc.rights.accessRights open access es_ES

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