A new cryptic species of Aponurus Looss, 1907 (Digenea: Lecithasteridae) from Mediterranean goatfish (Teleostei: Mullidae)

The status of the trematode Aponurus laguncula Looss, 1907 in the western Mediterranean is re-assessed by means of a comparative morphological study and rDNA sequences based on newly collected material. A. laguncula ( sensu stricto ) is redescribed from Trachinus draco L. and a new cryptic species o...

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Veröffentlicht in:Systematic parasitology 2011-06, Vol.79 (2), p.145-159
Hauptverfasser: Carreras-Aubets, Marta, Repullés-Albelda, Aigües, Kostadinova, Aneta, Carrassón, Maite
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Carrassón, Maite
description The status of the trematode Aponurus laguncula Looss, 1907 in the western Mediterranean is re-assessed by means of a comparative morphological study and rDNA sequences based on newly collected material. A. laguncula ( sensu stricto ) is redescribed from Trachinus draco L. and a new cryptic species of the ‘ A. laguncula complex’, Aponurus mulli n. sp., is described on the basis of abundant material from Mullus barbatus L. (type-host) and M. surmuletus L. off the Spanish Mediterranean coasts. The new species is differentiated from A. laguncula ( sensu stricto ) by its: significantly larger, elongate body, with maximum width at the level of the ventral sucker; shorter forebody; distinctly larger sinus-sac, seminal receptacle and seminal vesicle, with the latter also being more elongate; vesicular pars prostatica; more anteriorly located vitellarium, which consists of eight globular follicles; and distinctly smaller eggs, which are also smaller in relation to body size and have both their opercular and anopercular poles rounded. The variability and the allometric growth of the morphological characters in the new species were studied in detail, resulting in additional distinguishing features. Sequences of the large subunit rRNA (28S) gene (domains D1–D3) and ITS2 rRNA gene region for the new species have been submitted to GenBank in order to enhance future studies on species differentiation within the ‘ A. laguncula complex’.
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A. laguncula ( sensu stricto ) is redescribed from Trachinus draco L. and a new cryptic species of the ‘ A. laguncula complex’, Aponurus mulli n. sp., is described on the basis of abundant material from Mullus barbatus L. (type-host) and M. surmuletus L. off the Spanish Mediterranean coasts. The new species is differentiated from A. laguncula ( sensu stricto ) by its: significantly larger, elongate body, with maximum width at the level of the ventral sucker; shorter forebody; distinctly larger sinus-sac, seminal receptacle and seminal vesicle, with the latter also being more elongate; vesicular pars prostatica; more anteriorly located vitellarium, which consists of eight globular follicles; and distinctly smaller eggs, which are also smaller in relation to body size and have both their opercular and anopercular poles rounded. The variability and the allometric growth of the morphological characters in the new species were studied in detail, resulting in additional distinguishing features. Sequences of the large subunit rRNA (28S) gene (domains D1–D3) and ITS2 rRNA gene region for the new species have been submitted to GenBank in order to enhance future studies on species differentiation within the ‘ A. laguncula complex’.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><pmid>21544713</pmid><doi>10.1007/s11230-011-9297-8</doi><tpages>15</tpages></addata></record>
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subjects Agriculture
Animal Anatomy
Animal Ecology
Animal Structures - anatomy & histology
Animal Systematics/Taxonomy/Biogeography
Animals
Aponurus
Biomedical and Life Sciences
Cluster Analysis
Digenea
DNA, Helminth - chemistry
DNA, Helminth - genetics
DNA, Intergenic - chemistry
DNA, Intergenic - genetics
DNA, Ribosomal - chemistry
DNA, Ribosomal - genetics
DNA, Ribosomal Spacer - chemistry
DNA, Ribosomal Spacer - genetics
Histology
Lecithasteridae
Life Sciences
Marine
Mediterranean Sea
Microscopy
Molecular Sequence Data
Morphology
Mullidae
Mullus barbatus
Perciformes - parasitology
Phylogeny
RNA, Ribosomal, 28S - genetics
Sequence Analysis, DNA
Teleostei
Trachinus draco
Trematoda - anatomy & histology
Trematoda - classification
Trematoda - genetics
Trematoda - isolation & purification
Zoology
title A new cryptic species of Aponurus Looss, 1907 (Digenea: Lecithasteridae) from Mediterranean goatfish (Teleostei: Mullidae)
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