29 Works

Environmental DNA effectively captures functional diversity of coastal fish communities

Giorgio Aglieri, Charles Baillie, Stefano Mariani, Carlo Cattano, Antonio Calò, Gabriele Turco, Davide Spatafora, Antonio Di Franco, Manfredi Di Lorenzo, Paolo Guidetti & Marco Milazzo
Robust assessments of taxonomic and functional diversity are essential components of research programs aimed at understanding current biodiversity patterns and forecasting trajectories of ecological changes. Yet, evaluating marine biodiversity along its dimensions is challenging and dependent on the power and accuracy of the available data collection methods. Here we combine three traditional survey methodologies [Underwater Visual Census strip transects (UVCt), Baited Underwater Videos (BUVs) and Small Scale Fishery catches (SSFc)], and one novel molecular technique...

Lacistorhynchidae family 28S alignment

Mario Santoro, Bruno Bellisario, Fabio Crocetta, Barbara Degli Uberti & Marialetizia Palomba
Aim: Trypanorhyncha cestodes comprise a wide range of heteroxenous parasites infecting elasmobranchs as definitive hosts, with crustaceans, squids, and fishes acting as intermediate/paratenic hosts. Limited data exist on the larval infection of these cestodes and the role of intermediate and paratenic hosts in the life cycle of these parasites. In this study, we investigated the factors that determine the occurrence and the level of infection of Grillotia plerocerci in the skeletal muscles of various deep...

Data from: Parallel pattern of differentiation at a genomic island shared between clinal and mosaic hybrid zones in a complex of cryptic seahorse lineages

Florentine Riquet, Cathy Liautard-Haag, Lucy Woodall, Carmen Bouza, Patrick Louisy, Bojan Hamer, Francisco Otero-Ferrer, Philippe Aublanc, Vickie Béduneau, Olivier Briard, Tahani El Ayari, Sandra Hochscheid, Khalid Belkhir, Sophie Arnaud-Haond, Pierre-Alexandre Gagnaire & Nicolas Bierne
Diverging semi-isolated lineages either meet in narrow clinal hybrid zones, or have a mosaic distribution associated with environmental variation. Intrinsic reproductive isolation is often emphasized in the former and local adaptation in the latter, although both can contribute to isolation. Rarely these two patterns of spatial distribution are reported in the same study system. Here we report that the long-snouted seahorse Hippocampus guttulatus is subdivided into discrete panmictic entities by both types of hybrid zones....

Data from: Synechococcus: 3 billion years of global dominance

Petr Dvořák, Dale A. Casamatta, Aloisie Poulíčková, Petr Hašler, Vladan Ondřej & Remo Sanges
Cyanobacteria are amongst the most important primary producers on the Earth. However, the evolutionary forces driving cyanobacterial species diversity remain largely enigmatic due to both their distinction from macroorganisms, and an undersampling of sequenced genomes. Thus, we present a new genome of a Synechococcus-like cyanobacterium from a novel evolutionary lineage. Further, we analyse all existing 16S rRNA sequences and genomes of Synechococcus-like cyanobacteria. Chronograms showed extremely polyphyletic relationships in Synechococcus, which has not been observed...

Species richness in North Atlantic fish: process concealed by pattern

Henrik Gislason, Jeremy Collie, Brian R. MacKenzie, Anders Nielsen, Maria De Fatima Borges, Teresa Bottari, Corina Chavez, Andrey V. Dolgov, Jakov Dulčić, Daniel Duplisea, Heino O. Fock, Didier Gascuel, Luís Gil De Sola, Jan Geert Hiddink, Remment Ter Hofstede, Igor Isajlović, Jónas Páll Jonasson, Ole Jørgensen, Kristján Kristinsson, Gudrun Marteinsdottir, Hicham Masski, Sanja Matić-Skoko, Mark R. Payne, Melita Peharda, Jakup Reinert … & Lilja Stefansdottir
Aim Previous analyses of marine fish species richness based on presence-absence data have shown changes with latitude and average species size, but little is known about the underlying processes. To elucidate these processes we use metabolic, neutral, and descriptive statistical models to analyse how richness responds to maximum species length, fish abundance, temperature, primary production, depth, latitude, and longitude, while accounting for differences in species catchability, sampling effort, and mesh size. Data Results from 53,382...

Data from: Black goby territorial males adjust their ejaculate’s characteristics in response to the presence of sneakers

Lisa Locatello, Oliviero Borgheresi, Federica Poli, Andrea Pilastro & Maria Rasotto
In many species males can rapidly adjust their ejaculate performance in response to changing levels of sperm competition, an ability that is probably mediated by seminal fluid adaptive plasticity. In the black goby, Gobius niger, female spawning in the nest of a territorial male can last hours, and males attach a viscous ejaculate to the nest roof, from which sperm are slowly released. During spawning, sneaker males attempt to approach the nest and release their...

Resilient consumers accelerate the plant decomposition in a naturally acidified seagrass ecosystem

Juhyung Lee, Maria Cristina Gambi, Kristy Kroeker, Marco Munari, Kabir Peay & Fiorenza Micheli
Anthropogenic stressors are predicted to alter biodiversity and ecosystem functioning worldwide. However, scaling up from species to ecosystem responses poses a challenge, as species and functional groups can exhibit different capacities to adapt, acclimate, and compensate under changing environments. We used a naturally acidified seagrass ecosystem (the endemic Mediterranean Posidonia oceanica) as a model system to examine how ocean acidification (OA) modifies the community structure and functioning of plant detritivores, which play vital roles in...

Data from: Extending full protection inside existing marine protected areas or reducing fishing effort outside can reconcile conservation and fisheries goals

Mokrane Belharet, Antonio Di Franco, Antonio Calò, Lorenzo Mari, Joachim Claudet, Renato Casagrandi, Marino Gatto, Josep Lloret, Charlotte Sève, Paolo Guidetti & Paco Melià
1. Most fish stocks worldwide are fished at maximum sustainable yield (MSY) or overfished, as many fisheries management strategies have failed to achieve sustainable fishing. Identifying effective fisheries management strategies has now become urgent. 2. Here, we developed a spatially-explicit metapopulation model accounting for population connectivity in the north-western Mediterranean Sea, and parameterized it for three ecologically and economically important coastal fish species: the white seabream Diplodus sargus, the two-banded seabream Diplodus vulgaris and the...

Data from: Coralline algae in a naturally acidified ecosystem persist by maintaining control of skeletal mineralogy and size

Nicholas A. Kamenos, Gabriela Perna, Maria Cristina Gambi, Fiorenza Micheli & Kristy J. Kroeker
To understand the effects of ocean acidification (OA) on marine calcifiers, the trade-offs among different sublethal responses within individual species and the emergent effects of these trade-offs must be determined in an ecosystem setting. Crustose coralline algae (CCA) provide a model to test the ecological consequences of such sublethal effects as they are important in ecosystem functioning, service provision, carbon cycling and use dissolved inorganic carbon to calcify and photosynthesize. Settlement tiles were placed in...

Data from: Should we sync? Seascape-level genetic and ecological factors determine seagrass flowering patterns

Marlene Jahnke, Jordi F. Pagès, Teresa Alcoverro, Paul S. Lavery, Kathryn M. McMahon & Gabriele Procaccini
Spatial and temporal heterogeneity in flowering occur in many plant species with abiotic pollination and may confer fitness advantages through mechanisms such as predator satiation or pollination efficiency. Environmental factors such as light quality or quantity and temperature play an important role in inducing synchronisation on wide geographic scales. On a smaller geographic scale, external factors such as resource availability and herbivory are theorised to trigger flowering, while genetic factors may also play an important...

Data from: Biogeographical scenarios modulate seagrass resistance to small-scale perturbations

Fernando Tuya, Yolanda Fernández‐Torquemada, Jesús Zarcero, Yoana Del Pilar-Ruso, Ina Csenteri, Fernando Espino, Pablo Manent, Leticia Curbelo, Adriá Antich, José A. De La Ossa, Laura Royo, Inés Castejon-Silvo, Gabriele Procaccini, Jorge Terrados & Fiona Tomas
1. Seagrasses constitute a key coastal habitat worldwide, but are are exposed to multiple perturbations. Understanding elements affecting seagrass resistance to disturbances is critical for conservation. Distinct biogeographical scenarios are intrinsically linked with varying ecological and evolution backgrounds shaped across millennia. 2. We addressed whether the resistance (change in shoot abundances) and performance (change in leaf morphology and growth) of the seagrass Cymodocea nodosa to a local stressor, light reduction, varied across three regions (Southeast...

Data from: High opsin diversity in a non-visual infaunal brittlestar

Jérôme Delroisse, Esther Ullrich-Lüter, Olga Ortega-Martinez, Sam Dupont, Maria-Ina Arnone, Jérôme Mallefet & Patrick Flammang
Background: In metazoans, opsins are photosensitive proteins involved in both vision and non-visual photoreception. Echinoderms have no well-defined eyes but several opsin genes were found in the purple sea urchin (Strongylocentrotus purpuratus) genome. Molecular data are lacking for other echinoderm classes although many species are known to be light sensitive.Results: In this study focused on the European brittle star Amphiura filiformis, we first highlighted a blue-green light sensitivity using a behavioural approach. We then identified...

Data from: Network analysis of sea turtle movements and connectivity: a tool for conservation prioritization

Connie Y. Kot, Susanne Åkesson, Joanna Alfaro-Shigueto, Diego Fernando Amorocho Llanos, Marina Antonopoulou, George H. Balazs, Warren R. Baverstock, Janice M. Blumenthal, Annette C. Broderick, Ignacio Bruno, Ali Fuat Canbolat, Paolo Casale, Daniel Cejudo, Michael S. Coyne, Corrie Curtice, Sarah DeLand, Andrew DiMatteo, Kara Dodge, Daniel C. Dunn, Nicole Esteban, Angela Formia, Mariana M. P. B. Fuentes, Ei Fujioka, Julie Garnier, Matthew H. Godfrey … & Patrick N. Halpin
Aim: Understanding the spatial ecology of animal movements is a critical element in conserving long-lived, highly mobile marine species. Analysing networks developed from movements of six sea turtle species reveals marine connectivity and can help prioritize conservation efforts. Location: Global. Methods: We collated telemetry data from 1,235 individuals and reviewed the literature to determine our dataset’s representativeness. We used the telemetry data to develop spatial networks at different scales to examine areas, connections, and their...

Data from: Persistent natural acidification drives major distribution shifts in marine benthic ecosystems

Cristina Linares, Montserrat Vidal, Miquel Canals, Diego Kersting, David Amblas, Eneko Aspillaga, Emma Cebrian, Antonio Delgado-Huertas, David Diaz, Joaquim Garrabou, Bernat Hereu, Laura Navarro, Nuria Teixido & Enric Ballesteros
Ocean acidification is one of the main stressors affecting marine ecosystems. Rare CO2 vents offer a unique opportunity to investigate the response of benthic ecosystems to acidification. However, the benthic habitats that have been investigated so far are mainly very shallow water (≤5 m depth) and, therefore, to habitats that are poorly representative of the broad range of habitats that occur on the continental shelf. Here, we show that a decrease from pH 8.1 to...

Data from: Comprehensive transcriptome analysis of Crocus sativus for discovery and expression of genes involved in apocarotenoid biosynthesis

Shoib Ahmad Baba, Tabasum Mohiuddin, Swaraj Basu, Mohit Kumar Swarnkar, Aubid Hussain Malik, Zahoor Ahmed Wani, Nazia Abbas, Anil Kumar Singh & Nasheeman Ashraf
Background: Crocus sativus stigmas form rich source of apocarotenoids like crocin, picrocrocin and saffranal which besides imparting color, flavour and aroma to saffron spice also have tremendous pharmacological properties. Inspite of their importance, the biosynthetic pathway of Crocus apocarotenoids is not fully elucidated. Moreover, the mechanism of their stigma specific accumulation remains unknown. Therefore, deep transcriptome sequencing of Crocus stigma and rest of the flower tissue was done to identify the genes and transcriptional regulators...

Mitochondrial genome sequencing of marine leukemias reveals cancer contagion between clam species in the Seas of Southern Europe

Daniel Garcia-Souto, Seila Diaz-Costas, Alicia L Bruzos, Sara Rocha, Camila F Roman-Lewis, Juana Alonso, Rosana Rodriguez, Rodríguez-Castro Jorge, Antonio Villanueva, Luis Silva, Jose Maria Valencia, Giovanni Annona, Andrea Tarallo, Fernando Ricardo, Ana Bratos-Cetinic, David Posada, Juan Jose Pasantes & Jose MC Tubio
Clonally transmissible cancers are tumour lineages that are transmitted between individuals via the transfer of living cancer cells. In marine bivalves, leukemia-like transmissible cancers, called hemic neoplasias, have demonstrated the ability to infect individuals from different species. We performed whole-genome sequencing in eight V. verrucosa clams that were diagnosed with hemic neoplasia, from two sampling points located more than 1,000 nautical miles away in the Atlantic Ocean and the Mediterranean Sea Coasts of Spain. Mitochondrial...

Species distribution, hybridization and connectivity in the genus Chionodraco: unveiling unknown icefish diversity in Antarctica

Luca Schiavon, Valérie Dulière, Mario La Mesa, Ilaria Marino, Giuditta Codogno, Elisa Boscari, Emilio Riginella, Alessandra Battistotti, Magnus Lucassen, Lorenzo Zane & Chiara Papetti
Aim The species of the genus Chionodraco (Notothenioidei) are the most abundant icefish on the continental shelf of the Weddell Sea. While previous studies indicated that only Chionodraco hamatus and Chionodraco myersi inhabit the Weddell Sea, the third Chionodraco species, Chionodraco rastrospinosus, was recently sampled in the area. Since C. rastrospinosus is supposed to be found only at the Antarctic Peninsula and Scotia Arc, this study aimed at confirming the species classification of C. rastrospinosus...

Data from: Large scale patterns of marine diatom richness: drivers and trends in a changing ocean.

Greta Busseni, Luigi Caputi, Roberta Piredda, Paul Fremont, Bruno Hay Mele, Lucia Campese, Eleonora Scalco, Colomban De Vargas, Chris Bowler, Francesco D'Ovidio, Adriana Zingone, Maurizio Ribera D'Alcalà & Daniele Iudicone
Aim Plankton diversity is a pivotal element of marine ecosystem stability and functioning. A major obstacle in the assessment of diversity is the lack of consistency between patterns assessed by molecular and morphological data. This work aims to reconcile the two in a single richness measure, to investigate the environmental drivers affecting such measure, and finally to predict its spatio-temporal patterns. Location & Time period This is a global-scale study, based on data collected within...

A king and vassals’ tale: molecular signatures of clonal integration in Posidonia oceanica under chronic light shortage

Miriam Ruocco, Laura Entrambasaguas, Emanuela Dattolo, Alfonsina Milito, Lazaro Marín-Guirao & Gabriele Procaccini
1. Under unfavourable conditions, clonal plants benefit from physiological integration among ramets, sharing resources and information. Clonal integration can buffer against environmental changes and let the plant clone work as a “macro” organism. Molecular signals that regulate this phenomenon are completely unknown in marine plants. 2. Here, we present a first comprehensive study providing insights into the metabolic role of different types of ramets (i.e., apical vs vertical) in the foundation species Posidonia oceanica. Plants...

Diapause vs. reproductive programs: transcriptional phenotypes in Calanus finmarchicus

Petra H. Lenz, Vittoria Roncalli, Matthew C. Cieslak, Ann M. Tarrant, Ann M. Castelfranco & Daniel K. Hartline
Many arthropods undergo a seasonal dormancy termed “diapause” to optimize timing of reproduction in highly seasonal environments. In the North Atlantic, the copepod Calanus finmarchicus completes one to three generations annually with some individuals maturing into adults, while others interrupt their development to enter diapause. It is unknown which, why and when individuals enter the diapause program. Transcriptomic data from copepods on known programs were analyzed using dimensionality reduction of gene expression and functional analyses...

Data from: A meta-analysis reveals a positive correlation between genetic diversity metrics and environmental status in the long-lived seagrass Posidonia oceanica

Marlene Jahnke, Jeanine L. Olsen & Gabriele Procaccini
The seagrass Posidonia oceanica is a key engineering species structuring coastal marine systems throughout much of the Mediterranean basin. Its decline is of concern, leading to the search for short- and long-term indicators of seagrass health. Using ArcGIS maps from a recent, high-resolution (1–4 km) modelling study of 18 disturbance factors affecting coastal marine systems across the Mediterranean (Micheli et al. 2013, http://globalmarine.nceas.ucsb.edu/mediterranean/), we tested for correlations with genetic diversity metrics (allelic diversity, genotypic/clonal diversity...

Data from: Biocomplexity in populations of European anchovy in the Adriatic Sea

Paolo Ruggeri, Andrea Splendiani, Giulia Occhipinti, Tatiana Fioravanti, Alberto Santojanni, Iole Leonori, Andrea De Felice, Enrico Arneri, Gabriele Procaccini, Gaetano Catanese, Vjekoslav Tičina, Angelo Bonanno, Paola Nisi Cerioni, Massimo Giovannotti, William Stewart Grant, Vincenzo Maputo Barucchi & Vincenzo Caputo Barucchi
The sustained exploitation of marine populations requires an understanding of a species' adaptive seascape so that populations can track environmental changes from short- and long-term climate cycles and from human development. The analysis of the distributions of genetic markers among populations, together with correlates of life-history and environmental variability, can provide insights into the extent of adaptive variation. Here, we examined genetic variability among populations of mature European anchovies (n = 531) in the Adriatic...

Data from: Adaptive responses along a depth and a latitudinal gradient in the endemic seagrass Posidonia oceanica

Marlene Jahnke, Daniela D’ Esposito, Luigi Orrù, Antonella Lamontanara, Emanuela Dattolo, Fabio Badalamenti, Silvia Mazzuca, Gabriele Procaccini & Luisa Orsini
Seagrass meadows provide important ecosystem services and are critical to the survival of the associated invertebrate community. However, they are threatened worldwide by human-driven environmental change. Understanding the potential for adaptation of these plants is critical to assess not only their ability to persist under future global change scenarios, but also to assess the persistence of the associated communities. Here, we screened wild population of Posidonia oceanica, an endemic long lived marine plant in the...

Physiological acclimatization in high-latitude zooplankton

Vittoria Roncalli, Jeanette Niestroy, Matthew C. Cieslak Cieslak, Ann M. Castelfranco, Russell R. Hopcroft & Petra H. Lenz
How individual organisms adapt to non-optimal conditions through physiological acclimatization is central to predicting the consequences of unusual abiotic and biotic conditions such as those produced by marine heat waves. The Northeast Pacific, including the Gulf of Alaska experienced an extreme warming event (2014-2016, “The Blob”) that affected all trophic levels leading to large-scale changes in the community. The marine copepod Neocalanus flemingeri is one key member of the subarctic Pacific pelagic ecosystem. During the...

Data from: Mediterranean marine protected areas have higher biodiversity via increased evenness, not abundance

Shane Blowes, Jonathan Chase, Antonio Di Franco, Ori Frid, Nicholas Gotelli, Paolo Guidetti, Tiffany Knight, Felix May, Daniel McGlinn, Fiorenza Micheli, Enric Sala & Jonathan Belmaker
1. Protected areas are central to biodiversity conservation. For marine fish, marine protected areas (MPAs) often harbour more individuals, especially of species targeted by fisheries. But precise pathways of biodiversity change remain unclear. For example, how local-scale responses combine to affect regional biodiversity, important for managing spatial networks of MPAs, is not well known. Protection potentially influences three components of fish assemblages that determine how species accumulate with sampling effort and spatial scale: the total...

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