Abstract Intraspecific diversity promotes evolutionary change, and when partitioned among geographic regions or habitats can form the basis for speciation. Marine species live in an environment that provide as much scope diversification vertical horizontal dimension. Understanding relevant mechanisms will contribute significantly to our understanding of eco-evolutionary processes effective biodiversity conservation. Here, we annotated genome assembly deep-sea fish Coryphaenoides rupestris...

Abstract Populations and species are threatened by human pressure, but their fate is variable. Some depleted populations, such as that of the northern elephant seal ( Mirounga angustirostris ), recover rapidly even when surviving population was small. The hunted extensively taken collectors between early 1800s 1892, suffering an extreme bottleneck a consequence. Recovery rapid now there over 200,000 individuals. We sequenced 260 modern 8 historical nuclear genomes to assess impact on...

The Little Neptune grass Cymodocea nodosa is a key seagrass species in the Mediterranean Sea, forming extensive and patchy meadows shallow coastal transitional ecosystems. In such habitats, high temperatures salinities, separately combination, can be significant stressors context of climate change, particularly during heatwave events, seawater desalination plant effluents. Despite well-documented negative, macroscopic effects, underlying cellular molecular processes combined effects...

This study reports on a new translocated population of the Western Greece Goby (Economidichthys pygmaeus Holly, 1929) within Thrace freshwater ecoregion in Northeastern Greece, approximately 370 km east species' native range (Ionian ecoregion; Greece).Specimens were identified by morphological examination and molecular confirmation.Based literature review anecdotal information was possibly introduced last two to five years, perhaps associated with fish farm imports from Greece.Population...

The authentication of food products and the verification their identity are major importance for consumers. Food fraud through mislabeling is an illegal practice consisting substitution expensive product by a relatively cheaper one, misleading false labelling origin adulteration in processed or frozen products. This issue particularly high concerning fish seafood, which easily adulterated primarily due to difficult morphological identification. Fish species Mullidae family considered among...

Admixture and hybridization may play a key role in population dynamics speciation with respect to habitat, demographic history, adaptive selection. The present study examines the genetic diversity of two congeneric—but different subgenera—holothurians that live sympatry mixed populations. Strong evidence admixture was provided by analyzing RAD sequencing data from 90 67 individuals Holothuria (Holothuria) tubulosa (Roweothuria) poli, respectively, various areas Hellenic Seas (eastern...

Abstract Aim We investigated the population genetic structure of a highly mobile marine species, striped dolphin, Stenella coeruleoalba (Meyen, 1833), along geographical range with habitat transitions and historical dynamics to identify causes divergence, assess effect past climate change on demography connectivity. Location North‐east Atlantic Ocean Mediterranean Sea. Methods Twenty microsatellite loci were used in conjunction coalescent methods investigate demographic history dolphins ( )...

Pseudaliid lungworms infect the lungs and sinuses of cetaceans. Information on life cycle epidemiology pseudaliids is very scarce mostly concerns species that coastal or inshore Available evidence indicates some are vertically transmitted to host, whereas others acquired via infected prey. We documented pseudaliid infections in an oceanic cetacean, striped dolphin (Stenella coeruleoalba) western Mediterranean, investigated possibilities vertical vs. horizontal transmission potential...

Monitoring of Delphinidae species population patterns in the Mediterranean Sea was carried out a sequence surveys employing different approaches. Data from seven-year with small catamaran sailing boats were analyzed under model-based Density Surface Models used to produce spatial distribution prediction three (Stenella coeruleoalba, Tursiops truncatus, and Delphinus delphis) an extended study area covering much Sea. A classical distance sampling protocol applied order calculate detection...

Population dynamics in the marine realm can shape species' spatial structure and genetic variability between given geographical areas. Connectivity is an important factor of population structure. In this study, we examined diversity white seabream (Diplodus sargus, L. 1758) eastern Mediterranean basin, using a panel four microsatellite markers. Recorded low FST values within study area indicate little evidence differentiation among populations. Results suggest high gene flow which may imply...

The red porgy (Pagrus pagrus) and the common dentex (Dentex dentex) are Sparidae species of high commercial value, traded in Greek market. In some cases, fish identification from fisheries is difficult for consumer due to strong morphological similarities with their imported counterparts or closely related such as Pagrus major, caeroleustictus, Dentex gibbosus Pagellus erythrinus, especially when specimens frozen, filleted cooked. Techniques based on DNA sequencing, COI barcoding, accurately...

We investigated the population dynamics of a highly clonal marine angiosperm, Cymodocea nodosa, in eastern Mediterranean Sea, to identify historical dynamics, demography, and connectivity species area. Eighteen microsatellite loci were used conjunction with coalescent methods investigate genetic structure demographic history C. nodosa meadows. Approximate Bayesian computation (ABC) modeling was examine pattern divergence over time context environmental change course Quaternary period. ABC...

AB Aquatic Biology Contact the journal Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 18:69-80 (2013) - DOI: https://doi.org/10.3354/ab00490 Population subdivision of saddled seabream Oblada melanura in Aegean Sea revealed by genetic and morphometric analyses G. A. Gkafas1, C. Tsigenopoulos2, Magoulas2, P. Panagiotaki1, D. Vafidis1, Z. Mamuris3, Exadactylos1,* 1Department Ichthyology Environment, School Agricultural...

Abstract Living specimens of the macroalga Palmaria decipiens were collected from 100 m depth, representing a new confirmed depth record, considerably exceeding previous record 42 depth. Previous deeper collections (below conventional SCUBA depths) have relied on dredge/grab samples or drop camera surveys. Remote techniques cannot conclusively prove that macroalgae are living at these depths, as algae detach shallower substrata, e.g., through ice scouring, and drift to depths below their...

Comprehensively detailed information on population dynamics for benthic species is crucial since potential admixture of individuals could shift the genetic subdivision and age structure during a full breeding period. The apparent impact recruitment strategy Norway lobster Nephrops norvegicus still under research. For this reason present study was focused variation over given continuous year period in semi-enclosed gulf Aegean Sea.Analyses revealed that relative smaller size class females...

The rainbow trout, Oncorhynchus mykiss, comprises a non-indigenous species of the European freshwater ecosystem.Due to its remarkable advantages fast-growing and facultative adaptability in various habitats under different conditions, it has become most dominant commercially reared aquaculture Greece.Despite economic importance, there is dearth population genetic studies regarding origin any posterior introduction by private sector.In this study, polymerase chain reaction-restriction...

Genetic diversity and structure were investigated among seven meadows of Cymodocea nodosa in the Aegean Sea, eastern Mediterranean basin.Analysis three genetic loci, corresponding to nuclear rDNA operon, revealed 12 distinct multilocus RFLP genotypes.The observed F ST pairwise values revealed, most cases, a previously unidentified populations.A relative substructuring was within Pagassitikos gulf, suggesting fragmentation possibly due significant factor recorded cyclonic system studied...

The impact of inbreeding on fitness has been widely studied and provides consequential inference about adaptive potential the survival for reduced fragmented natural populations. Correlations between heterozygosity are common in literature, but they rarely inform likely mechanisms. Here, we investigate a pathology with clear health striped dolphin hosts (a nematode infection that compromises lung function). Dolphins varied respect to their parasite burden this highly pathogenic...

Accurate checklists of species are essential for evaluating their conservation status and understanding more about distribution, biology ecology and, therefore, the first step in order to effectively protect them. According existing literature, Greek seas rich chondrichthyan biodiversity herein, we update most recent checklist country regarding that present waters, correct unvalidated miscellaneous sightings observations provide guidelines future research improve conservation. In total, 330...

Coalescent methods in population genetics aim to detect biodiversity patterns, evolutionary mechanisms, and signatures of historical changes effective sizes with respect the species fidelity. Restriction site-associated DNA sequencing (RADseq) was used evaluate dynamics invertebrate within same localities. New technologies, such as ones employed by genetics, could be improve management sustainability marine aquaculture resources. Sea cucumbers (Holothuria tubolosa) showed genetic...