Francisco Hontoria

Instituto de Acuicultura Torre de la Sal

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Juan Carlos Navarro

Instituto de Acuicultura Torre de la Sal

Francisco Amat

Instituto de Acuicultura Torre de la Sal

ÓM

Óscar Monroig

Instituto de Acuicultura Torre de la Sal

Inmaculada Varó

Instituto de Acuicultura Torre de la Sal

Douglas R. Tocher

University of Stirling

E. Almansa

Instituto Volcanológico de Canarias

Diego Garrido

Universidad de La Laguna

Carlos Barata

Institute of Environmental Assessment and Water Research

Marta Maccari

University of Siena

Alicia Estévez

Institute for Research and Technology in Food and Agriculture

Cooperative Institutions

Consejo Superior de Investigaciones Científicas

Instituto de Acuicultura Torre de la Sal

University of Adelaide

Austral University of Chile

Institute for Research and Technology in Food and Agriculture

University of Stirling

Centre National de la Recherche Scientifique

Universidade do Porto

Instituto Español de Oceanografía

Université de Montpellier

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ZW sex-chromosome evolution and contagious parthenogenesis in Artemia brine shrimp

Genetics (2022)

Marwan Elkrewi Uladzislava Khauratovich Melissa A. Toups Vincent Kiplangat Bett Andrea Mrnjavac

Abstract Eurasian brine shrimp (genus Artemia) have closely related sexual and asexual lineages of parthenogenetic females, which produce rare males at low frequencies. Although they are known to have ZW chromosomes, these are not well characterized, and it is unclear whether they are shared across the clade. Furthermore, the underlying genetic architecture of the transmission of asexuality, which can occur when rare males mate with closely related sexual females, is not well understood. We produced a chromosome-level assembly for the sexual Eurasian species Artemia sinica and characterized in detail the pair of sex chromosomes of this species. We combined this new assembly with short-read genomic data for the sexual species Artemia sp. Kazakhstan and several asexual lineages of Artemia parthenogenetica, allowing us to perform an in-depth characterization of sex-chromosome evolution across the genus. We identified a small differentiated region of the ZW pair that is shared by all sexual and asexual lineages, supporting the shared ancestry of the sex chromosomes. We also inferred that recombination suppression has spread to larger sections of the chromosome independently in the American and Eurasian lineages. Finally, we took advantage of a rare male, which we backcrossed to sexual females, to explore the genetic basis of asexuality. Our results suggest that parthenogenesis is likely partly controlled by a locus on the Z chromosome, highlighting the interplay between sex determination and asexuality.

Asexuality

Parthenogenesis

Brine shrimp

Poeciliidae

Asexual reproduction

10.1093/genetics/iyac123

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Citations (8)

Avaliação do estado fisiológico das paralarvas de Octopus vulgaris resultantes de ovos incubados a diferentes temperaturas, através de biomarcadores clássicos

Martim Magro Juan Carlos Navarro Francisco Hontoria Diego Garrido E. Almansa

Trabajo presentado en el XV Congreso Nacional de Acuicultura y el I Congreso Iberico de Acuicultura, celebrados en Huelva (Espana) del 13 al 16 de octubre de 2015

octopus (software)

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Quality evaluation of Artemia cysts from three Algerian populations

African Journal of Aquatic Science (2021)

Chalabia Chabet dis Wahid Refes Inmaculada Varó Francisco Hontoria Francisco Amat

The aim of this study was to determine the nutritional value of three populations of Artemia, one from the Bethioua Sebkha (Oran) and two new biotopes at El Melah (Bechar) and Timimoune (Adrar), by evaluating the cyst and nauplius biometry, hatching parameters and fatty acid profiles. This information is of relevance to aquaculture initiatives, and fills in knowledge gaps from previous research at Algerian sites. The size of nauplii varied from 453.26 ± 0.3 µm and 478.73 ± 0.2 µm. The chorion thickness was between 13.28 µm and 10.50 µm. The highest hatching percentage and hatching efficiency were obtained after decapsulation of Bethioua cysts. The shortest hatching synchrony time was also found for the Bethioua cysts. All cyst samples from the the Bethioua population analysed in this study showed a freshwater-type fatty acid profile, rich in linolenic acid (LNA, 18:3n.3), opposed to a marine-type fatty acid profile rich in presence of eicosapentaenoic acid (EPA, 20:5n-3). The Bethioua population exhibited the best hatching performance and are ideally suited for use in aquaculture.

Biotope

10.2989/16085914.2021.1895052

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Citations (1)

Phylogenetic analysis of problematic Asian species ofArtemiaLeach, 1819 (Crustacea, Anostraca), with the descriptions of two new species

Journal of Crustacean Biology (2023)

Alireza Asem Chaojie Yang Amin Eimanifar Francisco Hontoria Inmaculada Varó

Abstract Species of Artemia are regionally endemic branchiopod crustaceans composed of sexual species and parthenogenetic lineages, and represent an excellent model for studying adaptation and speciation to extreme and heterogeneous hypersaline environments. We tested hypotheses of whether populations from the Tibetan Plateau belong to A. tibetianaAbatzopoulos, Zhang & Sorgeloos,1998 and whether a population from Kazakhstan is a new species, using other Asian species of Artemia as outgroups. We conducted a multitrait phylogenetic study based on the complete mitogenome, mitochondrial (COI, 12S, 16S) and nuclear (microsatellites, ITS1) markers, and a suit of uni- and multivariate morphological traits. Our results led to the discovery of two new species, one from the Tibetan Plateau (Haiyan Lake) in China (Artemia sorgeloosin. sp.) and a second from Kazakhstan (Artemia amatin. sp.). Our analysis demonstrate that A. tibetiana and A. amatin. sp. are monophyletic, whereas A. sorgeloosin. sp., and A. tibetiana are polyphyletic. Evolutionary relationships based on mitochondrial and nSSR markers suggest that A. tibetiana may have arisen from a past hybridization event of a maternal ancestor of A. tibetiana with A. sorgeloosin. sp. or its ancestor. We present the complete mitogenome of A. tibetiana, A. amatin. sp., and A. sorgeloosin. sp. We also provide a novel taxonomic identification key based on morphology, emphasizing the phenotype as a necessary component of the species concept.

Anostraca

Polyphyly

Monophyly

Parthenogenesis

10.1093/jcbiol/ruad002

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Citations (10)

Elongation capacity of polyunsaturated fatty acids in the annelid Platynereis dumerilii

Open Biology (2024)

Marc Ramos-Llorens Khalida Bainour Leonie Adelmann Francisco Hontoria Juan Carlos Navarro

Elongation of very long-chain fatty acid (Elovl) proteins plays pivotal functions in the biosynthesis of the physiologically essential long-chain polyunsaturated fatty acids (LC-PUFA). Polychaetes have important roles in marine ecosystems, contributing not only to nutrient recycling but also exhibiting a distinctive capacity for biosynthesizing LC-PUFA. To expand our understanding of the LC-PUFA biosynthesis in polychaetes, this study conducted a thorough molecular and functional characterization of Elovl occurring in the model organism Platynereis dumerilii . We identify six Elovl in the genome of P. dumerilii . The sequence and phylogenetic analyses established that four Elovl, identified as Elovl2/5, Elovl4 (two genes) and Elovl1/7, have putative functions in LC-PUFA biosynthesis. Functional characterization confirmed the roles of these elongases in LC-PUFA biosynthesis, demonstrating that P. dumerilii possesses a varied and functionally diverse complement of Elovl that, along with the enzymatic specificities of previously characterized desaturases, enables P. dumerilii to perform all the reactions required for the biosynthesis of the LC-PUFA. Importantly, we uncovered that one of the two Elovl4-encoding genes is remarkably long in comparison with any other animals' Elovl, which contains a C terminal KH domain unique among Elovl. The distinctive expression pattern of this protein in photoreceptors strongly suggests a central role in vision.

Annelid

10.1098/rsob.240069

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Citations (2)

Effects of nauplial density, product concentration and product dosage on the survival of the nauplii and EFA incorporation during Artemia enrichment with liposomes

Aquaculture (2006)

Óscar Monroig Juan Carlos Navarro Francisco Amat Pedro González Francisco Hontoria

10.1016/j.aquaculture.2006.08.046

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Citations (13)

Isolation and functional chracaterisation of a stearoyl CoA desaturase and and Elovl4 elongase from the common octopus (Octopus vulgaris)

Óscar Monroig Francisco Hontoria Inmaculada Varó Douglas R. Tocher Juan Carlos Navarro

Trabajo presentada en el 10th International Symposium on Reproductive Physiology of Fish, celebrado en Olhao (Portugal), del 25 al 30 de mayo de 2014

octopus (software)

Isolation

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ZW sex-chromosome evolution and contagious parthenogenesis in Artemia brine shrimp

bioRxiv (Cold Spring Harbor Laboratory) (2022)

Marwan Elkrewi Uladzislava Khauratovich Melissa A. Toups Vincent Kiplangat Bett Andrea Mrnjavac

Abstract Eurasian brine shrimp (genus Artemia ) have closely related sexual and asexual lineages of parthenogenetic females, which produce rare males at low frequencies. Although they are known to have ZW chromosomes, these are not well characterized, and it is unclear whether they are shared across the clade. Furthermore, the underlying genetic architecture of the transmission of asexuality, which can occur when rare males mate with closely related sexual females, is not well understood. We produced a chromosome-level assembly for the Eurasian species A. sinica and characterized in detail the pair of sex chromosomes of this species. We combined this with short-read genomic data for the sexual species A. sp. Kazakhstan and several lineages of A. parthenogenetica, allowing us to perform a first in-depth characterization of sex-chromosome evolution across the genus. We identified a small differentiated region of the ZW pair that is shared by all sexual and asexual lineages, supporting the shared ancestry of the sex chromosomes. We also inferred that recombination suppression has spread to larger sections of the chromosome independently in the American and Eurasian lineages. Finally, we took advantage of a rare male, which we backcrossed to sexual females, to explore the genetic basis of asexuality. Our results suggest that parthenogenesis may be partly controlled by a locus on the Z chromosome, highlighting the interplay between sex determination and asexuality.

Asexuality

Parthenogenesis

Brine shrimp

10.1101/2022.04.27.489735

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Citations (0)

Effect of ibuprofen and carbamazepine on cyclooxygenase (COX-2) gill gene expression, lipids and reproductive hormones in temperature conditioned sole

A. González-Mira Francisco Hontoria Evaristo L. Mañanós Vanesa Piquer Amparo Torreblanca

Comunicacion presentada en el 10th Iberian and 7th Iberoamerican Congress on Environmental Contamination and Toxicology, celebrado en Vila Real, Portugal, del 14 al 17 de julio de 2015

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Demographic parameters of sexual and parthenogenetic Artemia: temperature and strain effects

Journal of Experimental Marine Biology and Ecology (1996)

Carlos Barata Francisco Hontoria Francisco Amat Ribert Browne

Parthenogenesis

Polyploid

Strain (injury)

Sexual reproduction

Sexual maturity

10.1016/0022-0981(95)00138-7

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Citations (26)