Beyond imposex: other sexual alterations in a nassariid snail from Patagonia
| Autor: | Jorge Eduardo Marcovecchio, Maite Andrea Narvarte, Federico Delucchi, María Andrea Roche, María Cecilia Salas, Maria Soledad Avaca, Matías Nicolás Tartara |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Imposex Otras Ciencias Biológicas Zoology Snail 010501 environmental sciences Aquatic Science Oceanography 01 natural sciences Ciencias Biológicas chemistry.chemical_compound biology.animal medicine Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences Bullia biology Ecology 010604 marine biology & hydrobiology Incidence (epidemiology) biology.organism_classification IMPOSEX PATAGONIA medicine.anatomical_structure chemistry ABNORMAL PENIS Tributyltin Trematode infestation BUCCINANOPS DEFORMIS Bay CIENCIAS NATURALES Y EXACTAS Penis |
| DOI: | 10.6084/m9.figshare.4970825 |
| Popis: | The occurrence of a penis in female gastropods has commonly been accepted as an indicator of tributyltin (TBT) pollution. During the surveys performed in Patagonian waters between 2002 and 2010, individuals of Buccinanops deformis with a short penis and an external vas deferens were initially considered as showing imposex. Doubt arose when different manifestations of the phenomenon were identified at the two sites with the densest populations of the species (San Antonio Bay, SAB, and Villarino). This led us to search at both locations for: (a) histological confirmation of sex, (b) butyltin measurements in sediments and snail tissues, and (c) incidence of trematode infestation. We found that both populations have individuals with a short penis. While all the inspected individuals from SAB were histologically identified as females (imposex), those from Villarino were identified as males. Trematodes were absent in individuals from SAB and showed very low prevalence in those from Villarino, with metacercariae found in the digestive gland. In snail tissues, butyltins were found mainly in the form of dibutyltin (DBT) in SAB and at negligible levels in Villarino. In sediments, butyltins were found only in the form of TBT, at higher levels in SAB than in Villarino. Thus, it became clear that our finding of a short penis is a manifestation of imposex on females from SAB related to the high TBT levels, whereas in Villarino it is a male trait, which is not related to TBT or a trematode infestation but may be a Dumpton syndrome-like abnormality. Fil: Narvarte, Maite Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue; Argentina Fil: Salas, María Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue; Argentina Fil: Avaca, Maria Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue; Argentina Fil: Roche, María Andrea. Universidad Nacional del Comahue; Argentina Fil: Delucchi, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina Fil: Tartara, Matías Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina Fil: Marcovecchio, Jorge Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina |
| Databáze: | OpenAIRE |
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