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You searched for: Author garcía Remove constraint Author: garcía Publication year rev 7981-2019 Remove constraint Publication year rev: 7981-2019 Subject term gonads Remove constraint Subject term: gonads
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1. Bioaccumulation of perfluoroalkyl substances in marine echinoderms: Results of laboratory-scale experiments with Holothuria tubulosa Gmelin, 1791

Author:
María Teresa García-Corcoles,   et al.   ; Julia Martín; Félix Hidalgo; Alejandro José Ibáñez-Yuste; Esteban Alonso; Jose Luís Vilchez; Alberto Zafra-Gómez;     Show all 7 Authors
Source:
Chemosphere 2019 v.215 pp. 261-271
ISSN:
0045-6535
Subject:
Holothuria; adsorption; bioaccumulation factor; females; freeze drying; gonads; intestines; laboratory experimentation; liquid chromatography; males; marine environment; perfluorocarbons; perfluorooctanoic acid; sediments; solvents; sorbents; t-test; tandem mass spectrometry; trophic levels
Abstract:
... Bioaccumulation of six perfluoroalkyl substances (PFAS) was assessed using the marine echinoderm Holothuria tubulosa Gmelin, 1791. Batch experiments were conducted to establish the relationship between concentrations in water, sediment and biota over 197 days. The sample treatment for the determination of compounds involves steps of lyophilization, solvent extraction and clean-up of the extracts w ...
DOI:
10.1016/j.chemosphere.2018.10.037

2. Cuttlebone morphometrics and sex identification of Sepia bertheloti (d’Orbigny, 1835) from the central-east Atlantic

Author:
Vicente Hernández-García,   et al.   ; Airam Guerra-Marrero; David Jiménez-Alvarado; Leticia Curbelo-Muñoz; José Juan Castro-Hernández;     Show all 5 Authors
Source:
Helgoland marine research 2019 v.73 no.1 pp. 10
ISSN:
1438-387X
Subject:
Sepia; females; gonads; males; morphometry; oocytes; Africa
Abstract:
... Analysis of 322 cuttlebones of Sepia bertheloti caught in the waters of the Northwest Africa showed significant differences in growth between males and females. Morphometric analysis revealed a relatively different cuttlebone growth pattern between sexes, with males presenting faster growth in length to reach larger sizes and females displaying greater growth in width. This difference in cuttlebon ...
DOI:
10.1186/s10152-019-0531-0

3. Gene dosage of DAX-1, determining in sexual differentiation: duplication of DAX-1 in two sisters with gonadal dysgenesis

Author:
Mary García-Acero,   et al.   ; Mónica Molina; Olga Moreno; Andrea Ramirez; Catalina Forero; Camila Céspedes; Juan Carlos Prieto; Jaime Pérez; Fernando Suárez-Obando; Adriana Rojas;     Show all 10 Authors
Source:
Molecular biology reports 2019 v.46 no.3 pp. 2971-2978
ISSN:
0301-4851
Subject:
copy number variation; females; gene dosage; gene overexpression; genes; gonadal dysgenesis; gonads; histopathology; inheritance (genetics); neoplasms; quantitative polymerase chain reaction; sex reversal; sisters; testicular development
Abstract:
... Two sisters phenotypically normal females, presenting with tumor abdominal mass with histopathological findings of teratoma and gonadoblastoma associated to 46,XY male-to-female sex reversal syndrome, secondary to a duplication in DAX-1, possibly inherited of maternal gonadal mosaicism. Copy number variation and functional effects of the duplication were done by MLPA multiplex ligation-dependent p ...
DOI:
10.1007/s11033-019-04758-y

4. Spermatogenesis and gonadal cycle in male Tamoya haplonema and Chiropsalmus quadrumanus (Cnidaria, Cubozoa)

Author:
Jimena García-Rodríguez,   et al.   ; Gisele R. Tiseo; Fernando J. Zara; Cheryl Lewis Ames; Antonio C. Marques; André C. Morandini;     Show all 6 Authors
Source:
Zoologischer Anzeiger 2019 v.279 pp. 59-67
ISSN:
0044-5231
Subject:
Cubozoa; eosin; estuaries; gonads; head; light microscopy; males; polysaccharides; proteins; shrimp; spermatids; spermatocytes; spermatogenesis; spermatogonia; spermatozoa; staining; trawl nets; Brazil
Abstract:
... Spermatogenesis has been little studied in cubozoans. This work describes spermatogenesis of two cubozoan species from Brazil, Tamoya haplonema and Chiropsalmus quadrumanus, using light microscopy and histochemical techniques to highlight and contrast stages of the gonadal cycle. Specimens were collected by hand at the water surface or with shrimp trawls in three areas in the state of São Paulo (S ...
DOI:
10.1016/j.jcz.2018.12.008