Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
963
datasets available to search
ShareScore release 0.7.1
Dataset results
963 results for “Gobies”
Data from: Molecular phylogenetics of Gobioidei and phylogenetic placement of European gobies
Gobioidei is one of the largest suborders of teleost fishes, with nearly 2000 extant species currently recognized. They have a worldwide distribution and show a spectacular variety in morphology, ecology, and behavior. Despite their importance, phylogenetic relationships among many groups of gobioids (including some of the major lineages) still remain poorly understood. In this study, we analyze sequence data of five molecular markers (two mitochondrial and three nuclear) averaging 6000 bp for 222 species of gobioids. Our study is the first to include both multiple nuclear and mitochondrial genes to reconstruct a comprehensive multilocus phylogeny of gobioids encompassing most major lineages representing the overall diversity of one of the most speciose vertebrate lineages. Two separate datasets are produced and used to specifically address the phylogenetic placement of Rhyacichthyidae and Odontobutidae, and the phylogenetic relationships among the lineages of Gobioidei. Our results strongly support that the initial split in the gobioid tree separated a clade containing Rhyacichthyidae + Odontobutidae as the sister group of all other lineages. The family Eleotrididae branches off the gobioid tree after the Rhyacichthyidae + Odontobutidae clade, followed by the Butidae as sister to the Gobiidae. Additionally, several major monophyletic groups are confidently identified within the two major Gobiidae subclades, the gobiine-like gobiids and the gobionelline-like gobiids. Robustness of the phylogenetic trees inferred here is significantly higher than that of previous studies, hence our results provide the most compelling molecular phylogenetic hypothesis of Gobioidei thus far. For the first time, we provide a comprehensive sampling of European gobies that traditionally have been divided into "transverse" and "sand gobies". We show that the European gobies cluster in three distinct lineages, the Pomatoschistus-, Aphia-, and Gobius-lineages. The former resolved within the gobionelline-like gobiids and the latter two within the gobiine-like gobiids. These findings have significant implications for our understanding of the phylogeographic origin of European gobies in the light of the closure of the Paratethys. A rogue taxon analysis identified Kraemeria as an unstable taxon decreasing support at the base of the gobiine-like gobiids. Removal of this rogue taxon significantly increased phylogenetic resolution in that part of the tree and revealed additional insights into early bursts of cladogenesis of the gobiine-like gobiids.
Data from: Coalescent models characterize sources and demographic history of recent round goby colonization of Great Lakes and inland waters
The establishment and spread of aquatic invasive species is ecologically and economically harmful and a source of conservation concern internationally. Processes of species invasion have traditionally been inferred from observational data of species presence/absence and relative abundance. However, genetic-based approaches can provide valuable sources of inference. Restriction-site associated DNA sequencing was used to identify and genotype single nucleotide polymorphism (SNP) loci for Round Gobies (Neogobius melanostomus) (N=440) from 18 sampling locations in the Great Lakes and in three Michigan, USA drainages (Flint, Au Sable, and Cheboygan River basins). Sampled rivers differed in size, accessibility, and physical characteristics including man-made dispersal barriers. Population levels of genetic diversity and inter-population variance in SNP allele frequency were used in coalescence-based Approximate Bayesian Computation (ABC) to statistically compare models representing competing hypotheses regarding source population, post-colonization dispersal, and demographic history in the Great Lakes and inland waters. Results indicate different patterns of colonization across the three drainages. In the Flint River, models indicate a strong population bottleneck (< 3% of contemporary effective population size) and a single founding event from Saginaw Bay led to the colonization of inland river segments. In the Au Sable River, analyses could not distinguish potential source populations, but supported models indicated multiple introductions from one source population. In the Cheboygan River, supported models indicated that colonization likely proceeded from east (Lake Huron source) to west among inland locales sampled in the system. Despite the recent occupancy of Great Lakes and inland habitats, large numbers of loci analyzed in an ABC framework enable statistically supported identification of source populations and reconstruction of the direction of inland spread and demographic history following establishment. Information from analyses can direct management actions to limit the spread of invasive species from identified sources and most probable vectors into additional inland aquatic habitats.
Data from: Mate sampling and choosiness in the sand goby
To date, mate choice studies have mostly focused on establishing which mates are chosen or how the choices are performed. Here, we combined these two approaches by empirically testing how latency to mate is affected by various search costs, variation in mate quality and female quality in the sand goby (Pomatoschistus minutus). Our results show that females adjust their mating behaviour according to the costs and benefits of the choice situation. Specifically, they mated sooner when access to males was delayed and when the presence of other females presented a mate sampling cost. We also found a positive link between size variation among potential mating partners and spawning delay in some (but not all) experimental conditions. By contrast, we did not find the number of available males or the females' own body size ('quality') to affect mating latency. Finally, female mating behaviour varied significantly between years. These findings are notable for demonstrating that (i) mate sampling time is particularly sensitive to costs and, to a lesser degree, to variation among mate candidates, (ii) females' mating behaviour is sensitive to qualitative rather than to quantitative variation in their environment, and (iii) a snapshot view may describe mate sampling behaviour unreliably.
Hidden treasure of the Gobi: understanding how water limits range use of khulan in the Mongolian Gobi
<p>Most large herbivores in arid landscapes need to drink which constrains their movements and makes them vulnerable to disturbance. Asiatic wild ass or khulan (<i>Equus hemionus</i>) were widespread and abundant throughout the arid landscapes of Central Asia and Mongolia, but have undergone dramatic population declines and range constrictions; denying khulan access to water is believed to have played a major role. Mongolia's South Gobi Region now houses the world largest remaining khulan population, but is undergoing rapid land use changes. <a name="_Hlk12811526">Khulan water use is poorly understood, largely due to the difficulty of mapping waterpoints used by khulan throughout their exceptionally large ranges, prone to high variations in precipitation. We used the special movement path characteristics of GPS tagged khulan to show us where water is located. </a><a name="_Hlk12811671">We identified 367 waterpoints, 53 of which were of population importance, characterized the seasonal and circadian use, and identified snow cover as the most important variable predicting khulan visits during the non-growing season, and vegetation greenness during the growing season. Our results provide a data layer to help guide a </a>regional khulan conservation strategy, allow predictions for other part of the global khulan range, and illustrates the overall importance of waterpoints for dryland herbivores.</p>
Data from: Genetic patterns across an invasion's history: a test of change versus stasis for the Eurasian round goby in North America
Biological invasions comprise accidental evolutionary experiments, whose genetic compositions underlie relative success, spread, and persistence in new habitats. However, little is known about whether, or how, their population genetic patterns change temporally and/or spatially across the invasion's history. Theory predicts that most would undergo founder effect, exhibit low genetic divergence across the new range, and gain variation over time via new arriving propagules. To test these predictions, we analyze population genetic diversity and divergence patterns of the Eurasian round goby Neogobius melanostomus across the two decades of its North American invasion in the Laurentian Great Lakes, comparing results from 13 nuclear DNA microsatellite loci and mitochondrial DNA cytochrome b sequences. We test whether "genetic stasis", "genetic replacement", and/or "genetic supplement" scenarios have occurred at the invasion's core and expansion sites, in comparison to its primary native source population in the Dnieper River, Black Sea. Results reveal pronounced genetic divergence across the exotic range, with population areas remaining genetically distinct and statistically consistent across two decades, supporting "genetic stasis" and "founder takes most". The original genotypes continue to predominate, whose high population growth likely outpaced the relative success of later arrivals. The original invasion core has stayed the most similar to the native source. Secondary expansion sites indicate slight allelic composition convergence towards the core population over time, attributable to some early "genetic supplementation". The geographic and temporal coverage of this investigation offers a rare opportunity to discern population dynamics over time and space in context of invasion genetic theory versus reality.
Data from: Temporal genetic analysis of the endangered tidewater goby: metapopulation dynamics or drift in isolation?
Extinction and colonization dynamics are critical to understanding the evolution and conservation of metapopulations. However, traditional field studies of extinction–colonization are potentially fraught with detection bias and have rarely been validated. Here, we provide a comparison of molecular and field-based approaches for assessment of the extinction–colonization dynamics of tidewater goby (Eucyclogobius newberryi) in northern California. Our analysis of temporal genetic variation across 14 northern California tidewater goby populations failed to recover genetic change expected with extinction–colonization cycles. Similarly, analysis of site occupancy data from field studies (94 sites) indicated that extinction and colonization are very infrequent for our study populations. Comparison of the approaches indicated field data were subject to imperfect detection, and falsely implied extinction–colonization cycles in several instances. For northern California populations of tidewater goby, we interpret the strong genetic differentiation between populations and high degree of within-site temporal stability as consistent with a model of drift in the absence of migration, at least over the past 20–30 years. Our findings show that tidewater goby exhibit different population structures across their geographic range (extinction–colonization dynamics in the south vs. drift in isolation in the north). For northern populations, natural dispersal is too infrequent to be considered a viable approach for recolonizing extirpated populations, suggesting that species recovery will likely depend on artificial translocation in this region. More broadly, this work illustrates that temporal genetic analysis can be used in combination with field data to strengthen inference of extinction–colonization dynamics or as a stand-alone tool when field data are lacking.
Data from: Multi-locus sequence data reveal a new species of coral reef goby (Teleostei: Gobiidae: Eviota), and evidence of Pliocene vicariance across the Coral Triangle
Here, multi-locus sequence data are coupled with observations of live colouration to recognize a new species, Eviota punyit from the Coral Triangle, Indian Ocean and Red Sea. Relaxed molecular clock divergence time estimation indicates a Pliocene origin for the new species, and the current distribution of the new species and its sister species Eviota sebreei supports a scenario of vicariance across the Indo-Pacific Barrier, followed by subsequent range expansion and overlap in the Coral Triangle. These results are consistent with the 'centre of overlap' hypothesis, which states that the increased diversity in the Coral Triangle is due in part to the overlapping ranges of Indian Ocean and Pacific Ocean faunas. These findings are discussed in the context of other geminate pairs of coral reef fishes separated by the Indo-Pacific Barrier.
Mitochondrial DNA tree for COI sequences (DNA barcode) of the goby genus Trimma.
<p>Mitochondrial DNA tree for COI sequences (DNA barcode) of the goby genus Trimma</p>
FIGURE 2 in A new cleaner goby of the genus Elacatinus (Teleostei: Gobiidae), from Trindade Island, off Brazil
FIGURE 2: Detail of anterior portion of body of Elacatinus pridisi n. sp., paratype (UFES 1424), 28.4 mm SL, photographed in an aquarium immediately after collection (Photograph by J. L. Gasparini).
FIGURE 1 in A new cleaner goby of the genus Elacatinus (Teleostei: Gobiidae), from Trindade Island, off Brazil
FIGURE 1: Lateral view of Elacatinus pridisi n. sp., holotype (MNRJ 21980), 23.6 mm SL (Photograph by J. L. Gasparini).
FIGURE 3 in A new cleaner goby of the genus Elacatinus (Teleostei: Gobiidae), from Trindade Island, off Brazil
FIGURE 3: Brazilian species of Elacatinus: Top: Elacatinus pridisi n. sp., holotype (MNRJ 21980), 23.6 mm SL (Photograph by J. L. Gasparini); middle: Elacatinus figaro, (LBRP 0728), 27.8 mm SL, from the Brazilian coast (Photograph by R. Z. P. Guimarães); bottom: Elacatinus randalli, (MNRJ 12054), 28.7 mm SL, from Fernando de Noronha Archipelago, photograph kindly provided by Dr. Gustavo Nunan. All specimens live, photographed in aquaria shortly after collection.
FIGURE 4 in A new cleaner goby of the genus Elacatinus (Teleostei: Gobiidae), from Trindade Island, off Brazil
FIGURE 4: Trindade Island (20°30'S, 29°20'W), type locality of Elacatinus pridisi n. sp., off the state of Espírito Santo, Brazil (Photograph by J. L. Gasparini).
FIGURE 9 in Elacatinus lobeli, a new cleaning goby from Belize and Honduras
FIGURE 9. Map of Florida and the western Caribbean showing the distribution of Elacatinus oceanops (yellow spots) and E. lobeli (red spots).
FIGURE 8 in Elacatinus lobeli, a new cleaning goby from Belize and Honduras
FIGURE 8. Three individuals of Elacatins lobeli cleaning Gymnothorax funebris, Belize (photograph by J.E. Randall).
FIGURE 7 in Elacatinus lobeli, a new cleaning goby from Belize and Honduras
FIGURE 7. Five individuals of Elacatinus lobeli cleaning Epinephelus striatus, Belize (photograph by J.E. Randall).
FIGURE 6 in Elacatinus lobeli, a new cleaning goby from Belize and Honduras
FIGURE 6. Elacatinus lobeli on the coral Monastrea cavernosa, Isla Utila, Honduras (photograph by R.F. Myers).
FIGURE 4. A in Elacatinus lobeli, a new cleaning goby from Belize and Honduras
FIGURE 4. A juvenile of Elacatinus lobeli on the coral Monastrea cavernosa, Turneffe Reef, Belize (photograph by J.E. Randall).
FIGURE 2. A in Elacatinus lobeli, a new cleaning goby from Belize and Honduras
FIGURE 2. A pair of Elacatinus lobeli on the coral Agaricia sp., Belize (photograph by J.E. Randall).
FIGURE 1 in Elacatinus lobeli, a new cleaning goby from Belize and Honduras
FIGURE 1. Holotype of Elacatinus lobeli, USNM 364030, male, 31 mm, Pelican Cays, Belize (photograph by J.E. Randall).
FIGURE 4 in Barbulifer enigmaticus, a new seven-spined goby (Pisces: Teleostei: Gobiidae) from the southwestern Atlantic
FIGURE 4. Seascape of Praia dos Castelhanos at low tide (20º 50' 02" S, 40º 37' 16" W), Anchieta, Espírito Santo, Brazil, type locality of Barbulifer enigmaticus. Rocks emergent from the reef flat are lateritic (iron) rocks. The Atlantic Ocean (in the background) is heavily loaded with sediment, a common condition during the winter and rainy episodes. Photo by J.L. Gasparini.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.