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862 results for “marine fish”
The impact of paleoclimatic changes on body size evolution in marine fishes
<p class="MsoNormal">Body size is an important species trait, correlating with lifespan, fecundity, and other ecological factors. Over Earth's geological history, climate shifts have occurred, potentially shaping body size evolution in many clades. General rules attempting to summarize body size evolution include Bergmann's rule, which states that species grow to larger sizes in cooler environments and smaller sizes in warmer environments; and Cope's rule, which poses that lineages tend to increase in size over evolutionary time. Tetraodontiform fishes (including pufferfishes, boxfishes, and ocean sunfishes) provide an extraordinary clade to test these rules in ectotherms owing to their exemplary fossil record and the great disparity in body size observed among extant and fossil species. We examined Bergmann's and Cope's rules in this group by combining phylogenomic data (1,103 exon loci from 185 extant species) with 210 anatomical characters coded from both fossil and extant species. We aggregated data layers on paleoclimate and body size from the species examined, then inferred a set of time-calibrated phylogenies using tip-dating approaches for use in downstream comparative analyses of body size evolution using models that incorporate paleoclimatic information. We find strong support for a temperature-driven model in which increasing body size over time is correlated with decreasing oceanic temperatures. On average, extant tetraodontiforms are 2–3 times larger than their fossil counterparts, which otherwise evolved during periods of warmer ocean temperatures. These results provide strong support for both Bergmann's and Cope's rules, trends that are less studied in marine fishes compared to terrestrial vertebrates and marine invertebrates.</p>
Examining the diversity, stability and functioning of marine fish communities across a latitudinal gradient
<p><strong>Aim</strong>: As anthropogenic stressors on the biosphere intensify, understanding how communities respond to disturbances is critical. Biodiversity is often thought to promote the stability of communities over time and enhance ecosystem functioning. However, results have been inconsistent, and the multifaceted linkages among diversity, stability, and functioning under acute disturbances remain poorly understood. We experimentally tested the responses of marine fish communities to disturbance (i.e., acute habitat loss) across a diversity gradient spanning 35º degrees of latitude in the western Atlantic Ocean to assess the diversity-stability relationship and the interplay between diversity, stability, and fish biomass recovery (as a proxy for function) in marine fish communities.</p> <p><strong>Location</strong>: Western Atlantic Ocean (Maine, Massachusetts, North Carolina, Florida [USA], Belize, and Panama).</p> <p><strong>Time</strong> <strong>period</strong>: 2016 – 2017</p> <p><strong>Major taxa studied</strong>: Small, bottom-dwelling ('cryptobenthic') fishes</p> <p><strong>Results</strong>: Diversity showed a negative effect on community stability at both the regional (across docks) and local (within docks) scales. Similarly, local diversity was negatively correlated with ecosystem function. These effects are exacerbated by the habitat loss imposed via our experimental treatment.</p> <p><strong>Main</strong> <strong>conclusions</strong>: Our results suggest that habitat loss may more intensively re-shuffle diverse, tropical communities, which impacts biomass recovery, our proxy of functioning. Contrary to ecological theory, in small-bodied, benthos-associated vertebrate communities, biodiversity may neither promote stability nor functioning, suggesting that human disturbances may be particularly impactful in tropical, high-diversity ecosystems.</p>
Supplementary data for "ENGINEERED ADAPTATION MECHANISMS BETWEEN MARINE AND FRESHWATER ENVIRONMENTS IN FISH AFTER THE FLOOD" for the ICC 2023 in Cedarville, Ohio
<p>Supplementary data for "ENGINEERED ADAPTATION MECHANISMS BETWEEN MARINE AND FRESHWATER ENVIRONMENTS IN FISH AFTER THE FLOOD" for the ICC 2023 in Cedarville, Ohio.</p> <p>These include FishBase annotation, mtDNA sequence similarity matrixes, clustering, and statistics for nine fish orders:</p> <p>1. Acipenseriformes</p> <p>2. Angulliformes</p> <p>3. Beloniformes</p> <p>4. Characiformes</p> <p>5. Clupeiformes</p> <p>6. Cyprinodontiformes</p> <p>7. Elasmobranchii</p> <p>8. Pleuronectiformes</p> <p>9. Salmoniformes</p>
Global patterns of nuclear and mitochondrial genetic diversity in marine fishes
<p>Genetic diversity is a fundamental component of biodiversity. Examination of global patterns of genetic diversity can help highlight mechanisms underlying species diversity, though a recurring challenge has been that patterns may vary by molecular marker. Here, we compiled 6862 observations of genetic diversity from 492 species of marine fish and tested among hypotheses for diversity gradients: the founder effect hypothesis, the kinetic energy hypothesis, and the productivity-diversity hypothesis. We fit generalized linear mixed effect models (GLMMs) and explored the extent to which various macroecological drivers (latitude, longitude, temperature (SST), and chlorophyll-a concentration) explained variation in genetic diversity. We found that mitochondrial genetic diversity followed geographic gradients similar to those of species diversity, being highest near the Equator, particularly in the Coral Triangle, while nuclear genetic diversity did not follow clear geographic patterns. Despite these differences, all genetic diversity metrics were correlated with chlorophyll-a concentration, while mitochondrial diversity was also positively associated with SST. Our results provide support for the kinetic energy hypothesis, which predicts that elevated mutation rates at higher temperatures increase mitochondrial but not necessarily nuclear diversity, and the productivity-diversity hypothesis, which posits that resource-rich regions support larger populations with greater genetic diversity. Overall, these findings reveal how environmental variables can influence mutation rates and genetic drift in the ocean, caution against using mitochondrial macro-genetic patterns as proxies for whole-genome diversity, and aid in defining global gradients of genetic diversity.</p>
FIGURE 2 in The Volhynian (late Middle Miocene) marine fishes and mammals as proxies for the onset of the Eastern Paratethys re-colonisation by vertebrate fauna
FIGURE 2. Correlation of the Central and Eastern Paratethyan regional stages with standard chronostratigraphy and magnetostratigraphy modified after Harzhauser et al. (2004), Studencka, (1999), Ionesi (1991), and Vernyhorova (2015).
FIGURE 1 in The Volhynian (late Middle Miocene) marine fishes and mammals as proxies for the onset of the Eastern Paratethys re-colonisation by vertebrate fauna
FIGURE 1. Geographic location map of the Volhynian fossil-bearing sites: 1 – Brykiv; 2 – Vilkhovets; 3 – Kolubaivtsi; 4 – Khotin; 5 – Hrushivtsi; 6 – Khonkivtsi; 7 – Karpov Yar (Naslavcea); 8 – Darabani; 9 – Ghireni; 10 – Cordăreni; 11 – Hănești; 12 – Mitoc; 13 – Drăgușeni; 14 – Stâncești; 15 – Leucucești; 16 – Basarabi; 17 – Stăuceni; 18 – Erbiceni; 19 – Românești; 20 – Aroneanu; 21 – Voinești; 22 – Amvrosiivka; 23 – Saur-Mohyla.
FIGURE 5 in The Volhynian (late Middle Miocene) marine fishes and mammals as proxies for the onset of the Eastern Paratethys re-colonisation by vertebrate fauna
FIGURE 5. Marine mammals from the Volhynian beds of the Moldavian Platform: A – Phocinae indet. 2, scapula and caudal vertebra, Stăuceni; B – Kentriodon fuchsii, a lumbar vertebra, dorsal and posterior view, Basarabi; C – Kentriodontidae indet. 1 (cf. Imerodelphis thabagarii), lumbar vertebra, dorsal and anterior view, Saur-Mohyla; D – Kentriodontidae indet. 2, caudal vertebra, anterior and lateral view, Stăuceni; E – Kentriodontidae indet. 2, thoracic vertebra, anterior view, Stâncești; F – Kentriodontidae indet. 3, caudal vertebra, anterior and lateral view, Stăuceni; G – Pachyacanthus sp., thoracic vertebra, anterior and lateral view, Vilkhovets; H – Cetotheriidae indet., caudal vertebra, dorsal and lateral view, Stăuceni; I-J –? Mysticeti indet. ("Archaeocetus fockii"), rib fragment, lateral view and cross-section (I), caudal vertebra (J), dorsal and lateral view, Drăgușeni. Scale bars equal 2 cm in A–I and 5 cm in J.
FIGURE 4 in The Volhynian (late Middle Miocene) marine fishes and mammals as proxies for the onset of the Eastern Paratethys re-colonisation by vertebrate fauna
FIGURE 4. The partial skeleton of a true seal (Phocinae indet. 1) from the Volhynian beds of Kolubaivtsi (Ukraine). Scale bar equals 10 cm.
FIGURE 6 in The Volhynian (late Middle Miocene) marine fishes and mammals as proxies for the onset of the Eastern Paratethys re-colonisation by vertebrate fauna
FIGURE 6. The periotic bone of Kentriodon fuchsii from the Volhynian of Stăuceni (Romania) in ventral (A), lateral (B), and posterior view (C). Abbreviations: abf, anterior bullar facet; ap, anterior process; fc, ventral foramen of the facial canal; fo, fenestra ovalis; fr, fenestra rounda; pbf, posterior bullar facet; pc, pars cochlearis; pb, periotic body; pp, posterior process; vt, ventrolateral tuberosity. Scale bars equal 2 cm.
FIGURE 3 in The Volhynian (late Middle Miocene) marine fishes and mammals as proxies for the onset of the Eastern Paratethys re-colonisation by vertebrate fauna
FIGURE 3. Fish remains from the Volhynian beds of Romania and Ukraine: A-B – Sarmatella doljeana (Kramberger, 1884), anterior part of the body (A), and caudal part (B), Leucuşeşti; C – Clupeinae gen. et sp. indet., isolated scale, Voineşti; D-E – Scombroidei indet., caudal part (D), Erbiceni, and middle part of the body (E), Aroneanu; F – Sparus brusinai (Kramberger, 1882), skeleton, Hrushivtsi; G-H – Sparus cf. brusinai (Kramberger, 1882), right dentary in lateral (G) and dorsal view (H), Pârâul lui Gheorghe; I – Bothus parvulus (Kramberger, 1883), body imprint, Româneşti. Scale bars equal 2 mm in C, 5 mm in A-B, D-E, G-I, and 2 cm in F.
FIGURE 7 in The Volhynian (late Middle Miocene) marine fishes and mammals as proxies for the onset of the Eastern Paratethys re-colonisation by vertebrate fauna
FIGURE 7. Suggested scheme of marine vertebrate fauna dispersal in the Eastern Paratethys during the Volhynian age (modified after Schneider et al., 2013).
Fig. 7 a–j N. exocoeti Pillai 1954 in Nerocila species (Crustacea, Isopoda, Cymothoidae) from Indian marine fishes
Fig. 7 a–j N. exocoeti Pillai 1954, ovigerous female: MNHN-IU-2009-1936. a dorsal view; c lateral view; d frons; e uropods; f antennule; g antennule, distal articles; h antenna; i antenna, distal articles. MNHN-IU-2009-1937. b, dorsal view; c, lateral view. N. trichiura (Miers 1877), ovigerous female (AUCR 497): j dorsal view. Scale lines represent 5.0 mm (a, j)) and 5.5 mm (b, c)
Fig. 8 a–m N. exocoeti Pillai 1954 in Nerocila species (Crustacea, Isopoda, Cymothoidae) from Indian marine fishes
Fig. 8 a–m N. exocoeti Pillai 1954, ovigerous female (MNHN-IU-2009-1936): a mandible; b maxillule; c maxilla; d maxilla, apex; e maxilliped; f maxilliped article 3; g–m, pereopods 1–7
Fig. 2 a–k in Nerocila species (Crustacea, Isopoda, Cymothoidae) from Indian marine fishes
Fig. 2 a–k All the Nerocila species (dorsal view) collected from India in this study: Fig. 2a, N. arres; Fig. 2b, N. depressa; Fig. 2c, N. exocoeti; Fig. 2d, N. longispina; Fig. 2e, N. loveni; Fig. 2f, N. phaiopleura; Fig. 2g, N. poruvae; Fig. 2h, N. serra; Fig. 2i, N. sigani; Fig. 2j, N. sundaica; Fig. 2k, N. trichiura
Fig. 3 a–h N. arres Bowman and Tareen 1983 in Nerocila species (Crustacea, Isopoda, Cymothoidae) from Indian marine fishes
Fig. 3 a–h N. arres Bowman and Tareen 1983, ovigerous female (MNHN-IU-2009- 1934): a dorsal view; b lateral view; c frons; d uropods. N. sigani Bowman and Tareen 1983, ovigerous female (MNHN-IU-2009-1935): e dorsal view; f lateral view; g frons; h uropods. Scale lines represent 0.5 mm
Fig. 5 a–n N in Nerocila species (Crustacea, Isopoda, Cymothoidae) from Indian marine fishes
Fig. 5 a–n N. sigani Bowman and Tareen (1983), ovigerous female (MNHN-IU-2009- 1935): a antennule; b antenna; c mandible; d mandible palp; e maxillule; f maxilla; g maxilliped; h maxilliped article 3; i–m pereopods 3–7; n pereopod 7, distal articles
Fig. 4 a–q N. arres Bowman and Tareen 1983 in Nerocila species (Crustacea, Isopoda, Cymothoidae) from Indian marine fishes
Fig. 4 a–q N. arres Bowman and Tareen 1983, ovigerous female (MNHN-IU-2009- 1934): a antennule; b antennule, distal articles; c antenna; d antenna, distal articles; e mandible; f mandible palp, apex; g maxillule; h maxilla; I, maxilliped; j–p, pereopods 1–7; q pereopod 7, distal articles
Fig. 1 in It is recreational but profitability also matters: A cost-effective economic approach to marine recreational fishing in Spain Abstract
Fig. 1: Map of the study area. The darker regions highlighted correspond to Spanish coastal Autonomous Communities.
Fig. 4 in It is recreational but profitability also matters: A cost-effective economic approach to marine recreational fishing in Spain Abstract
Fig. 4: Economic indicator by: A) the main fishing modalities: spearfishing, shore-fishing and boat-fishing and B) spearfishing diving approach.
Fig. 3 in It is recreational but profitability also matters: A cost-effective economic approach to marine recreational fishing in Spain Abstract
Fig. 3: Daily expenses. A) Spearfishing by diving approach and B) Boat fishing (angling) by type of vessel. The percentage of responses by modality in brackets.
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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)
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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.