%0 Journal Article
%J Journal of Marine Systems
%D 2022
%T Macrozooplankton and micronekton diversity and associated carbon vertical patterns and fluxes under distinct productive conditions around the Kerguelen Islands
%A Cotté, C.
%A Ariza, A.
%A Berne, A.
%A Habasque, J.
%A Lebourges-Dhaussy, A.
%A Roudaut, G.
%A Espinasse, B.
%A Hunt, B.P.V.
%A Pakhomov, E.A.
%A Henschke, N.
%A Clara Péron
%A Conchon, A.
%A Koedooder, C.
%A Izard, L.
%A Cherel, Y.
%B Journal of Marine Systems
%V 226
%P 103650
%8 Jan-02-2022
%G eng
%U https://linkinghub.elsevier.com/retrieve/pii/S0924796321001457
%! Journal of Marine Systems
%R 10.1016/j.jmarsys.2021.103650
%0 Journal Article
%J Nature Ecology & Evolution
%D 2021
%T Conservative route to genome compaction in a miniature annelidAbstract
%A Martín-Durán, José M.
%A Vellutini, Bruno C.
%A Marlétaz, Ferdinand
%A Cetrangolo, Viviana
%A Cvetesic, Nevena
%A Thiel, Daniel
%A Henriet, Simon
%A Grau-Bové, Xavier
%A Carrillo-Baltodano, Allan M.
%A Gu, Wenjia
%A Kerbl, Alexandra
%A Marquez, Yamile
%A Bekkouche, Nicolas
%A Chourrout, Daniel
%A Gómez-Skarmeta, Jose Luis
%A Irimia, Manuel
%A Lenhard, Boris
%A Worsaae, Katrine
%A Hejnol, Andreas
%B Nature Ecology & Evolution
%V 5
%P 231 - 242
%8 Jan-02-2021
%G eng
%U https://www.nature.com/articles/s41559-020-01327-6
%N 2
%! Nat Ecol Evol
%R 10.1038/s41559-020-01327-6
%0 Journal Article
%J Marine Pollution Bulletin
%D 2021
%T Coupling high frequency monitoring and bioassay experiments to investigate a harmful algal bloom in the Bay of Seine (French-English Channel)
%A Serre-Fredj, Léon
%A Jacqueline, Franck
%A Navon, Maxime
%A Izabel, Guillaume
%A Chasselin, Léo
%A Jolly, Orianne
%A Répécaud, Michel
%A Pascal Claquin
%X Coastal ecosystems are increasingly threatened by eutrophication and dystrophy. In this context, the full pattern of a bloom dominated by the dinoflagellate, Lepidodinium chlorophorum, was investigated by a high frequency monitoring buoy equipped with sensors allowing nutrients and photosynthesis measurements. An increase of the N/P ratio affected phytoplankton physiology leading to bloom collapse with a slight oxygen depletion. In parallel, enrichment experiments were performed on the natural bloom population. After 5 days of incubation the community structure, using flow cytometry and several physiological parameters were analysed. The data reveal a potential N and P co-limitation and a decoupling between primary production and productivity in fully enriched conditions. Under unbalanced N/P inputs, high level of alkaline phosphatase activity and transparent exopolymeric particle production, which favour phytoplankton sedimentation, were observed. Nutrient inputs and their stoichiometry control phytoplankton growth, the community structure, physiological regulations, the fate of the bloom and consequences.
%B Marine Pollution Bulletin
%V 168
%P 112387
%8 Jan-07-2021
%G eng
%U https://linkinghub.elsevier.com/retrieve/pii/S0025326X21004215
%! Marine Pollution Bulletin
%R 10.1016/j.marpolbul.2021.112387
%0 Journal Article
%J Molecular and Cellular Endocrinology
%D 2021
%T Photoperiodic regulation of pituitary thyroid-stimulating hormone and brain deiodinase in Atlantic salmon
%A Irachi, Shotaro
%A Hall, Daniel J.
%A Fleming, Mitchell S.
%A Maugars, Gersende
%A Björnsson, Björn Thrandur
%A Sylvie Dufour
%A Uchida, Katsuhisa
%A McCormick, Stephen D.
%B Molecular and Cellular Endocrinology
%V 519
%P 111056
%8 Jan-01-2021
%G eng
%U https://linkinghub.elsevier.com/retrieve/pii/S0303720720303580
%! Molecular and Cellular Endocrinology
%R 10.1016/j.mce.2020.111056
%0 Journal Article
%J Frontiers in Physiology
%D 2021
%T Pituitary Hormones mRNA Abundance in the Mediterranean Sea Bass Dicentrarchus labrax: Seasonal Rhythms, Effects of Melatonin and Water Salinity
%A Jack Falcon
%E Maria-Jesus Herrero
%E Laura-Gabriela Nisembaum
%Y Esther Isorna
%Y Elodie Peyric
%Y Marilyn Beauchaud
%Y Joel Attia
%Y Denis Covès
%Y Michael Fuentès
%Y Maria-Jesus Delgado
%Y Laurence Besseau
%K annual variations
%K hormones
%K melatonin
%K photoperiod
%K pituitary
%K salinity
%K sea bass
%X In fish, most hormonal productions of the pituitary gland display daily and/or seasonal
rhythmic patterns under control by upstream regulators, including internal biological
clocks. The pineal hormone melatonin, one main output of the clocks, acts at different
levels of the neuroendocrine axis. Melatonin rhythmic production is synchronized mainly
by photoperiod and temperature. Here we aimed at better understanding the role
melatonin plays in regulating the pituitary hormonal productions in a species of scientific
and economical interest, the euryhaline European sea bass Dicentrarchus labrax. We
investigated the seasonal variations in mRNA abundance of pituitary hormones in two
groups of fish raised one in sea water (SW fish), and one in brackish water (BW fish). The
mRNA abundance of three melatonin receptors was also studied in the SW fish. Finally,
we investigated the in vitro effects of melatonin or analogs on the mRNA abundance of
pituitary hormones at two times of the year and after adaptation to different salinities.
We found that (1) the reproductive hormones displayed similar mRNA seasonal profiles
regardless of the fish origin, while (2) the other hormones exhibited different patterns
in the SW vs. the BW fish. (3) The melatonin receptors mRNA abundance displayed
seasonal variations in the SW fish. (4) Melatonin affected mRNA abundance of most
of the pituitary hormones in vitro; (5) the responses to melatonin depended on its
concentration, the month investigated and the salinity at which the fish were previously
adapted. Our results suggest that the productions of the pituitary are a response to
multiple factors from internal and external origin including melatonin. The variety of the
responses described might reflect a high plasticity of the pituitary in a fish that faces
multiple external conditions along its life characterized by marked daily and seasonal
changes in photoperiod, temperature and salinity.
%B Frontiers in Physiology
%V 12
%P 774975
%8 12/15/2021
%G eng
%U https://www.frontiersin.org/articles/10.3389/fphys.2021.774975/full?&utm_source=Email_to_authors_&utm_medium=Email&utm_content=T1_11.5e1_author&utm_campaign=Email_publication&field=&journalName=Frontiers_in_Physiology&id=774975
%9 Research article
%! Melatonin and the Pituitary Hormones in the Sea Bass
%R 10.3389/fphys.2021.774975
%0 Journal Article
%J Computational and Structural Biotechnology Journal
%D 2021
%T Quantifying Cyanothece growth under DIC limitation
%A Inomura, Keisuke
%A Masuda, Takako
%A Eichner, Meri
%A Rabouille, Sophie
%A Zavřel, Tomas
%A Červený, Jan
%A Vancová, Marie
%A Bernát, Gabor
%A Armin, Gabrielle
%A Pascal Claquin
%A Kotabová, Eva
%A Stephan, Susanne
%A Suggett, David J.
%A Deutsch, Curtis
%A Prášil, Ondrej
%B Computational and Structural Biotechnology Journal
%8 Jan-11-2021
%G eng
%U https://linkinghub.elsevier.com/retrieve/pii/S2001037021005018
%! Computational and Structural Biotechnology Journal
%R 10.1016/j.csbj.2021.11.036
%0 Journal Article
%J eLife
%D 2021
%T The rise and fall of the ancient northern pike master sex-determining gene
%A Pan, Qiaowei
%A Feron, Romain
%A Jouanno, Elodie
%A Darras, Hugo
%A Herpin, Amaury
%A Koop, Ben
%A Rondeau, Eric
%A Goetz, Frederick W
%A Larson, Wesley A
%A Bernatchez, Louis
%A Tringali, Mike
%A Curran, Stephen S
%A Saillant, Eric
%A Denys, Gaël
%A von Hippel, Frank A
%A Chen, Songlin
%A López, J Andrés
%A Verreycken, Hugo
%A Ocalewicz, Konrad
%A Guyomard, Rene
%A Eche, Camille
%A Lluch, Jerome
%A Roques, Celine
%A Hu, Hongxia
%A Tabor, Roger
%A DeHaan, Patrick
%A Nichols, Krista M
%A Journot, Laurent
%A Parrinello, Hugues
%A Klopp, Christophe
%A Interesova, Elena A
%A Trifonov, Vladimir
%A Schartl, Manfred
%A Postlethwait, John
%A Guiguen, Yann
%B eLife
%V 10
%8 Apr-01-2023
%G eng
%U https://elifesciences.org/articles/62858
%R 10.7554/eLife.62858
%0 Conference Proceedings
%B Second Symposium on the Kerguelen Plateau
%D 2019
%T Shark bycatch observed in the bottom longline fishery off the Kerguelen islands in 2006-2016, with a focus on Etmopterus viator
%A Charlotte Chazeau
%A S.P. Iglésias
%A Clara Péron
%A Nicolas Gasco
%A Martin, Alexis
%A Guy Duhamel
%B Second Symposium on the Kerguelen Plateau
%7 Welsford, D., J. Dell and G. Duhamel (Eds)
%I Australian Antarctic Division
%C Kingston, Tasmania, Australia
%8 2019
%G eng
%0 Journal Article
%J Scientific Reports
%D 2018
%T The unique functioning of a pre-Columbian Amazonian floodplain fishery
%A Rumsaïs Blatrix
%A Bruno Roux
%A Philippe Béarez
%A Gabriela Prestes-Carneiro
%A Marcelo Amaya
%A Jose Luis Aramayo
%A Leonor Rodrigues
%A Umberto Lombardo
%A Jose Iriarte
%A Jonas Gregorio de Souza
%A Mark Robinson
%A Cyril Bernard
%A Marc Pouilly
%A Mélisse Durécu
%A Carl F. Huchzermeyer
%A Mashuta Kalebe
%A Alex Ovando
%A Doyle McKey
%B Scientific Reports
%V 8
%G eng
%U https://doi.org/10.1038/s41598-018-24454-4
%R 10.1038/s41598-018-24454-4
%0 Journal Article
%J Cybium
%D 2017
%T Checklist of the marine fishes from metropolitan France
%A Philippe Béarez
%A Patrice Pruvost
%A Eric Feunteun
%A S.P. Iglésias
%A Patrice Francour
%A Causse, Romain
%A De Mazieres J.
%A Tercerie, S
%A Bailly, Nicolas
%B Cybium
%G eng
%U http://sfi-cybium.fr/fr/checklist-marine-fishes-metropolitan-france
%R 10.26028/cybium/2017-414-006
%0 Journal Article
%J Front. Physiol.
%D 2017
%T Eye Development in Sepia officinalis Embryo: What the Uncommon Gene Expression Profiles Tell Us about Eye Evolution
%A Imarazen, Boudjema
%A Aude Andouche
%A Yann Bassaglia
%A Pascal Jean Lopez
%A Laure Bonnaud-Ponticelli
%K dac
%K eya
%K eye development
%K rhodopsin
%K Sepia officinalis
%K six
%X
In metazoans, there is a remarkable diversity of photosensitive structures; their shapes, physiology, optical properties, and development are different. To approach the evolution of photosensitive structures and visual function, cephalopods are particularly interesting organisms due to their most highly centralized nervous system and their camerular eyes which constitute a convergence with those of vertebrates. The eye morphogenesis in numerous metazoans is controlled mainly by a conserved Retinal Determination Gene Network (RDGN) including pax, six, eya, and dac playing also key developmental roles in non-retinal structures and tissues of vertebrates and Drosophila. Here we have identified and explored the role of Sof-dac, Sof-six1/2, Sof-eya in eye morphogenesis, and nervous structures controlling the visual function in Sepia officinalis. We compare that with the already shown expressions in eye development of Sof-otx and Sof-pax genes. Rhodopsin is the pigment responsible for light sensitivity in metazoan, which correlate to correlate visual function and eye development. We studied Sof-rhodopsin expression during retina differentiation. By in situ hybridization, we show that (1) all of the RDGN genes, including Sof-pax6, are expressed in the eye area during the early developmental stages but they are not expressed in the retina, unlike Sof-otx, which could have a role in retina differentiation; (2) Sof-rhodopsin is expressed in the retina just before vision gets functional, from stage 23 to hatching. Our results evidence a role of Sof-six1/2, Sof-eya, and Sof-dac in eye development. However, the gene network involved in the retinal photoreceptor differentiation remains to be determined. Moreover, for the first time, Sof-rhodopsin expression is shown in the embryonic retina of cuttlefish suggesting the evolutionary conservation of the role of rhodopsin in visual phototransduction within metazoans. These findings are correlated with the physiological and behavioral observations suggesting that S. officinalis is able to react to light stimuli from stage 25 of organogenesis on, as soon as the first retinal pigments appear.
%B Front. Physiol. %8 08/2017 %G eng %R 10.3389/fphys.2017.00613 %0 Journal Article %J Environmental Pollution %D 2017 %T Mercury contamination level and speciation inventory in Lakes Titicaca and Uru-Uru (Bolivia): Current status and future trends %A S. Guédron %A D. Point %A D. Acha %A S. Bouchet %A P.A. Baya %A E. Tessier %A M. Monperrus %A C.I. Molina %A A. Groleau %A Laurent Chauvaud %A J. Thebault %A E. Amice %A L. Alanoca %A C. Duwig %A G. Uzu %A Lazzaro, Xavier %A A. Bertrand %A S. Bertrand %A C. Barbraud %A K. Delord %A Gibon, Francois-Marie %A C. Ibanez %A M. Flores %A P. Fernandez Saavedra %A M.E. Ezpinoza %A C. Heredia %A F. Rocha %A C. Zepita %A D. Amouroux %K Titicaca %XAquatic ecosystems of the Bolivian Altiplano (∼3800 m a.s.l.) are characterized by extreme hydro-climatic constrains (e.g., high UV-radiations and low oxygen) and are under the pressure of increasing anthropogenic activities, unregulated mining, agricultural and urban development. We report here a complete inventory of mercury (Hg) levels and speciation in the water column, atmosphere, sediment and key sentinel organisms (i.e., plankton, fish and birds) of two endorheic Lakes of the same watershed differing with respect to their size, eutrophication and contamination levels. Total Hg (THg) and monomethylmercury (MMHg) concentrations in filtered water and sediment of Lake Titicaca are in the lowest range of reported levels in other large lakes worldwide. Downstream, Hg levels are 3-10 times higher in the shallow eutrophic Lake Uru-Uru than in Lake Titicaca due to high Hg inputs from the surrounding mining region. High percentages of MMHg were found in the filtered and unfiltered water rising up from <1 to ∼50% THg from the oligo/hetero-trophic Lake Titicaca to the eutrophic Lake Uru-Uru. Such high %MMHg is explained by a high in situ MMHg production in relation to the sulfate rich substrate, the low oxygen levels of the water column, and the stabilization of MMHg due to abundant ligands present in these alkaline waters. Differences in MMHg concentrations in water and sediments compartments between Lake Titicaca and Uru-Uru were found to mirror the offset in MMHg levels that also exist in their respective food webs. This suggests that in situ MMHg baseline production is likely the main factor controlling MMHg levels in fish species consumed by the local population. Finally, the increase of anthropogenic pressure in Lake Titicaca may probably enhance eutrophication processes which favor MMHg production and thus accumulation in water and biota.
%B Environmental Pollution %V 231, Part 1 %P 262 - 270 %G eng %U https://www.sciencedirect.com/science/article/pii/S0269749117320572 %R https://doi.org/10.1016/j.envpol.2017.08.009 %0 Journal Article %J Journal of Experimental Marine Biology and Ecology %D 2017 %T Specific gravity and migratory patterns of amphidromous gobioid fish from Okinawa Island, Japan %A Iida, Midori %A Masashi Kondo %A Hélène Tabouret %A Maeda, Ken %A Pécheyran, C %A Atsushi Hagiwara %A Philippe Keith %A Katsunori Tachihara %K Buoyancy %K diadromy %K Early life history %K Migratory history %K otolith %K Specific gravity %XAmphidromy is a diadromous life history pattern where fish spawn in freshwater, and their larvae drift downstream to the sea; the larvae develop in marine environments then migrate back in rivers to grow and reproduce. Two amphidromous types with different life history characteristics, such as egg and larval sizes, exist. To understand the ecology and early life history of amphidromous gobioid fish, six species from Okinawa Island were selected—two large egg-type species (Rhinogobius similis and Tridentiger kuroiwae) and four small egg-type species (Stiphodon percnopterygionus, Stenogobius sp., Sicyopterus lagocephalus, and Eleotris acanthopoma). The migratory pattern of four of these species was confirmed using otolith Sr:Ca and Ba:Ca ratios combined with water chemistry analysis. Although these species showed amphidromous migratory patterns, the timing of migration from estuarine to freshwater habitats was species-specific. The large egg-type, R. similis, showed three different migratory patterns: a long marine larval phase with a relatively fast migration from estuarine to freshwater habitats, a short marine larval phase with a relatively fast migration, and a gradual migration. Similar patterns of a long and fast migration or a gradual migration were seen in T. kuroiwae; however, the two small eggtype species, Sti. percnopterygionus and Stenogobius sp., showed rapid migration to freshwater after entering the river. To estimate larval ecology in the sea, ontogenetic changes in specific gravity (SG) were examined in all species. The SG was measured day and night for 1–5 days until settlement in R. similis and T. kuroiwae, and until 10 days after hatching in the other species. The SG of all species ranged from 1.0138 to 1.0488, and varied among ontogenetic stages and between day and night and species. Larval SG was relatively similar between R. similis and T. kuroiwae, with low SG in the early stages and high SG after yolk absorption. During the late larval stages and until settlement, T. kuroiwae showed diel changes in SG, with higher SG during the day, whereas R. similis had a relatively constant pattern. The diel changes of T. kuroiwae larvae suggest different activity during the day and at night (e.g. diel vertical migration). In the four small egg-type species, SG was high at hatching and decreased thereafter, not showing large diel changes. The results suggest that sympatric amphidromous gobioid species have various early life histories that may be influenced by several larval traits, including SG.
%B Journal of Experimental Marine Biology and Ecology %V 486 %P 160-169 %G eng %N 2017 %0 Journal Article %J BMC Bioinformatics %D 2015 %T GigaTON: an extensive publicly searchable database providing a new reference transcriptome in the pacific oyster Crassostrea gigas. %A Guillaume Rivière %A Klopp, Christophe %A Ibouniyamine, Nabihoudine %A Huvet, Arnaud %A Boudry, Pierre %A Pascal Favrel %K Animals %K Base Sequence %K Computational Biology %K Crassostrea %K Databases, Genetic %K Gene Library %K Gene Ontology %K Genome %K High-Throughput Nucleotide Sequencing %K Molecular Sequence Data %K Sequence Analysis, RNA %K Software %K Transcriptome %XBACKGROUND: The Pacific oyster, Crassostrea gigas, is one of the most important aquaculture shellfish resources worldwide. Important efforts have been undertaken towards a better knowledge of its genome and transcriptome, which makes now C. gigas becoming a model organism among lophotrochozoans, the under-described sister clade of ecdysozoans within protostomes. These massive sequencing efforts offer the opportunity to assemble gene expression data and make such resource accessible and exploitable for the scientific community. Therefore, we undertook this assembly into an up-to-date publicly available transcriptome database: the GigaTON (Gigas TranscriptOme pipeliNe) database.
DESCRIPTION: We assembled 2204 million sequences obtained from 114 publicly available RNA-seq libraries that were realized using all embryo-larval development stages, adult organs, different environmental stressors including heavy metals, temperature, salinity and exposure to air, which were mostly performed as part of the Crassostrea gigas genome project. This data was analyzed in silico and resulted into 56621 newly assembled contigs that were deposited into a publicly available database, the GigaTON database. This database also provides powerful and user-friendly request tools to browse and retrieve information about annotation, expression level, UTRs, splice and polymorphism, and gene ontology associated to all the contigs into each, and between all libraries.
CONCLUSIONS: The GigaTON database provides a convenient, potent and versatile interface to browse, retrieve, confront and compare massive transcriptomic information in an extensive range of conditions, tissues and developmental stages in Crassostrea gigas. To our knowledge, the GigaTON database constitutes the most extensive transcriptomic database to date in marine invertebrates, thereby a new reference transcriptome in the oyster, a highly valuable resource to physiologists and evolutionary biologists.
%B BMC Bioinformatics %V 16 %P 401 %8 2015 %G eng %R 10.1186/s12859-015-0833-4 %0 Journal Article %J Journal of Natural History %D 2015 %T The role of female cephalopod researchers: past and present %A Allcock, A. Louise %A von Boletzky, Sigurd %A Laure Bonnaud-Ponticelli %A Brunetti, Norma E. %A Cazzaniga, Néstor J. %A Hochberg, Eric %A Ivanovic, Marcela %A Lipinski, Marek %A Marian, José E. A. R. %A Nigmatullin, Chingis %A Nixon, Marion %A Jean-Paul Robin %A Rodhouse, Paul G. K. %A Vidal, Erica A. G. %B Journal of Natural History %V 49 %P 1235–1266 %G eng %U http://dx.doi.org/10.1080/00222933.2015.1037088 %R 10.1080/00222933.2015.1037088 %0 Journal Article %J Marine and Freshwater Research %D 2014 %T Amphidromy and marine larval phase of ancestral Gobioids Rhyacichthys guilberti and Protogobius attiti (Teleostei: Rhyacichthyidae). %A Hélène Tabouret %A Tomadin, Marina %A Taillebois, Laura %A Iida, Midori %A Clara Lord %A Pécheyran, C %A Philippe Keith %K diadromy %K freshwater gobies %K otolith microchemistry %K tropical islands. %XEven if amphidromous fish species contribute most to the diversity of fish communities in the tropical insular
rivers, their biological cycle remain poorly known. For the first time, the otolith elemental composition and microstructure
of two ancestral gobioids, Rhyacichthys guilberti and Protogobius attiti, were investigated to describe their biological
cycle and pelagic larval duration (PLD). The otolith analysis using a femtosecond laser ablation coupled to an inductively
coupled plasma–mass spectrometer (fs-LA-ICP-MS) revealed an amphidromous life history for R. guilberti and it
suggested a progressive habitat shift from a marine habitat to a freshwater environment for P. attiti. For the first time, an
endemic species, P. attiti, showed longer and more variable PLD (55.213.5 days) than did a widespread one
(R. guilberti: ,30 days). These results need to be confirmed by analysing more samples but suggest that factors other
than the PLD control endemism and dispersal processes. In association with this first description of the biological cycle for
both species, such an approach is a prerequisite for the management and conservation of both patrimonial species.
A prototype of an integrated closed system for fish-plankton aquaculture was developed in Iquitos (Peruvian Amazonia) in order to cultivate the Tiger Catfish, Pseudoplatystoma punctifer (Castelnau, 1855). This freshwater recirculating system consisted of two linked sewage tanks with an intensive rearing unit (a cage) for P. punctifer placed in the first, and with a fish-plankton trophic chain replacing the filters commonly used in clear water closed systems. Detritivorous and zooplanktivorous fishes (Loricariidae and Cichlidae), maintained without external feeding in the sewage volume, mineralized organic matter and permitted the stabilization of the phytoplankton biomass. Water exchange and organic waste discharge were not necessary. In this paper we describe the processes undertaken to equilibrate this ecosystem: first the elimination of an un-adapted spiny alga, Golenkinia sp., whose proliferation was favored by the presence of a small rotifer, Trichocerca sp., and second the control of this rotifer proliferation via the introduction of two cichlid species, Acaronia nassa Heckel, 1840 and Satanoperca jurupari Heckel, 1840, in the sewage part. This favored some development of the green algae Nannochloris sp. and Chlorella sp. At that time we took the opportunity to begin a 3-month rearing test of P. punctifer. The mean specific growth rate and feed conversion ratio (FCR) of P. punctifer were 1.43 and 1.27, respectively, and the global FCR, including fish in the sewage part, was 1.08. This system has proven to be suitable for growing P. punctifer juveniles out to adult, and provides several practical advantages compared with traditional recirculating clear water systems, which use a combination of mechanical and biological filters and require periodic waste removal, leading to water and organic matter losses.
%B Animal %V 8 %P 1319-28 %8 2014 Aug %G eng %N 8 %R 10.1017/S1751731114001165 %0 Journal Article %J Mol Phylogenet Evol %D 2014 %T A multilocus molecular phylogeny of combtooth blennies (Percomorpha: Blennioidei: Blenniidae): multiple invasions of intertidal habitats. %A Hundt, Peter J %A Samuel Iglesias %A Hoey, Andrew S %A Simons, Andrew M %K Animals %K Bayes Theorem %K Ecosystem %K Likelihood Functions %K Perciformes %K Phylogeny %K Sequence Analysis, DNA %XThe combtooth blennies (f. Blenniidae) is a diverse family of primarily marine fishes with approximately 387 species that inhabit subtidal, intertidal, supralittoral habitats in tropical and warm temperate regions throughout the world. The Blenniidae has typically been divided into six groups based on morphological characters: Blenniini, Nemophini, Omobranchini, Phenablenniini, Parablenniini, and Salariini. There is, however, considerable debate over the validity of these groups and their relationships. Since little is known about the relationships in this group, other aspects of their evolutionary history, such as habitat evolution and remain unexplored. Herein, we use Bayesian and maximum likelihood analyses of four nuclear loci (ENC1, myh6, ptr, and tbr1) from 102 species, representing 41 genera, to resolve the phylogeny of the Blenniidae, determine the validity of the previously recognized groupings, and explore the evolution of habitat association using ancestral state reconstruction. Bayesian and maximum likelihood analyses of the resulting 3100bp of DNA sequence produced nearly identical topologies, and identified many well-supported clades. Of these clades, Nemophini was the only traditionally recognized group strongly supported as monophyletic. This highly resolved and thoroughly sampled blenniid phylogeny provides strong evidence that the traditional rank-based classification does not adequately delimit monophyletic groups with the Blenniidae. This phylogeny redefines the taxonomy of the group and supports the use of 13 unranked clades for the classification of blenniids. Ancestral state reconstructions identified four independent invasions of intertidal habitats within the Blenniidae, and subsequent invasions into supralittoral and freshwater habitats from these groups. The independent invasions of intertidal habitats are likely to have played an important role in the evolutionary history of blennies.
%B Mol Phylogenet Evol %V 70 %P 47-56 %8 2014 Jan %G eng %R 10.1016/j.ympev.2013.09.001 %0 Journal Article %J Rev Fish Biol Fisheries %D 2014 %T Tropical and temperate freshwater amphidromy: a comparison between life history characteristics of Sicydiinae, ayu, sculpins and galaxiids. %A Watanabe, S %A Iida, Midori %A Clara Lord %A Philippe Keith %A Tsukamoto, Katsumi %K Amphidromous species %K Fluvial form %K Landlocked form %K Oceanic dependency %K Sicydiine species %XAmphidromy is a distinctive form of
diadromy, but differences in the life histories of
tropical and temperate amphidromous fishes suggest
that there are two types of freshwater amphidromy.
The life histories of Sicydiinae gobies, ayu (Plecoglossus
altivelis), Japanese sculpins (Cottus) and galaxiids
(Galaxiidae), suggest that the Sicydiinae are
representatives of tropical freshwater amphidromy,
whereas ayu, sculpins and galaxiids are representatives
of temperate freshwater amphidromy. The Sicydiine
larval stage may be required to occur in the
ocean for all species, but ayu, sculpins and galaxiids
have landlocked or fluvial forms with larvae that do
not need to enter the ocean for larval feeding and
growth. This suggests that Sicydiine larvae have a high
oceanic dependency whereas ayu, sculpins and galaxiid
larvae have a low oceanic dependency. Freshwater
amphidromous fish in tropical and temperate zones
appear to have developed two different strategies in
the evolution of their life histories. It is likely that the
evolutionary direction of the larval stage of tropical
amphidromy is to remain in the sea and that of
temperate amphidromy is towards having the ability to
remain in freshwater if needed. Tropical and temperate
amphidromy appear to be biologically informative
categories and evaluations of this hypothesis will
facilitate better understanding of the various forms of
amphidromy in the future.