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4,028 results for “shrimps”
FIGURE 15 Periclimenes incertus Borradaile, 1915 in Shrimps of the genus Periclimenes (Crustacea, Decapoda, Palaemonidae) associated with mushroom corals (Scleractinia, Fungiidae): linking DNA barcodes to morphology
FIGURE 15 Periclimenes incertus Borradaile, 1915, ovigerous female, RMNH.CRUS.D.53946. A, rostrum and anterior appendages, dorsal view; B, idem, lateral view; C, left first pereiopod; D, idem, chela; E, idem, proximal segments; F, fourth thoracic sternites and proximal segments of first pereiopods. Scale bar: A–C = 1 mm; D–E = 0.2 mm; F = 0.4 mm.
FIGURE 5 Periclimenes watamuae Bruce, 1976a, minor second pereiopod. A. male, 1.00 in Shrimps of the genus Periclimenes (Crustacea, Decapoda, Palaemonidae) associated with mushroom corals (Scleractinia, Fungiidae): linking DNA barcodes to morphology
FIGURE 5 Periclimenes watamuae Bruce, 1976a, minor second pereiopod. A. male, 1.00 mm, left P2, RMNH.CRUS.D.57574, LEM.36; B, ovigerous female, pocl 1.45 mm, right P2, RMNH.CRUS.D.57574, LEM.36; C, ovigerous female, pocl. 1.40 mm, right P2, RMNH.CRUS.D.57574, GenBank MK843275. Scale bar = 0.4 mm.
FIGURE 12 in Shrimps of the genus Periclimenes (Crustacea, Decapoda, Palaemonidae) associated with mushroom corals (Scleractinia, Fungiidae): linking DNA barcodes to morphology
FIGURE 12 Periclimenes subcorallum sp. nov., ovigerous female paratype (pocl. 1.45 mm), RMNH.CRUS.D.57575. A, left major second pereiopod; B, idem fingers of chela; C, idem, tip of fingers, setae omitted; D, right minor second pereiopod; E, idem, fingers of chela. Scale bar: A, D = 1 mm; B, E = 0.2 mm; C = 0.07 mm.
FIGURE 11 in Shrimps of the genus Periclimenes (Crustacea, Decapoda, Palaemonidae) associated with mushroom corals (Scleractinia, Fungiidae): linking DNA barcodes to morphology
FIGURE 11 Periclimenes subcorallum sp. nov., ovigerous female paratype (pocl. 1.45 mm), RMNH.CRUS.D.57575. A, left second maxiliped; B, left third maxilliped; C, left first pereiopod; D, idem, proximal segments; E, idem, chela. Scale bar: A, D, E = 0.2 mm; B = 0.4 mm; C = 1 mm.
FIGURE 6 Periclimenes diversipes Kemp, 1922, ovigerous female. A, stn LEM.07 in Shrimps of the genus Periclimenes (Crustacea, Decapoda, Palaemonidae) associated with mushroom corals (Scleractinia, Fungiidae): linking DNA barcodes to morphology
FIGURE 6 Periclimenes diversipes Kemp, 1922, ovigerous female. A, stn LEM.07, on Danafungia scruposa; B, stn Downloaded from Brill.com 12/12/2023 03:02:30PM LEM.07, on Lithophyllon via repanda; Open C, stn AccessLEM..18 This, onis an Sandalolitha open accessrobustaarticle. distributed under the terms of the prevailing CC-BY license at the time of publication. https://creativecommons.org/licenses/by/4.0/
FIGURE 4 Periclimenes watamuae Bruce, 1976a, major second pereiopod. A in Shrimps of the genus Periclimenes (Crustacea, Decapoda, Palaemonidae) associated with mushroom corals (Scleractinia, Fungiidae): linking DNA barcodes to morphology
FIGURE 4 Periclimenes watamuae Bruce, 1976a, major second pereiopod. A, male, pocl 1.00 mm, right P2, RMNH. CRUS.D.57574, LEM.36; B, ovigerous female, pocl 1.45 mm, left P2, RMNH.CRUS.D.57574, LEM.36; C, ovigerous female, pocl. 1.40 mm, left P2, RMNH.CRUS.D.57574, GenBank MK843275. Scale bar = 0.4 mm.
FIGURE 3 Periclimenes diversipes Kemp, 1922, minor second pereiopod. A in Shrimps of the genus Periclimenes (Crustacea, Decapoda, Palaemonidae) associated with mushroom corals (Scleractinia, Fungiidae): linking DNA barcodes to morphology
FIGURE 3 Periclimenes diversipes Kemp, 1922, minor second pereiopod. A, male, pocl 1.38 mm, left P2, RMNH.CRUS.D.57553, GenBank MK843283; B, ovigerous female pocl. 1.25 mm, left P2, RMNH. CRUS.D.57547, GenBank MK843284; C, idem, lateral aspect chela; D, female pocl. 1.25 mm, right P2, RMNH.CRUS.D.57548, GenBank MK843295; E, ovigerous female pocl. 1.63 mm, right P2, RMNH. CRUS.D.57551, GenBank MK843282. Scale bar = 0.4 mm.
FIGURE 9 in Shrimps of the genus Periclimenes (Crustacea, Decapoda, Palaemonidae) associated with mushroom corals (Scleractinia, Fungiidae): linking DNA barcodes to morphology
FIGURE 9 Periclimenes subcorallum sp. nov., ovigerous female holotype (pocl. 1.50 mm), MZB CRU 4968. Habitus. Scale = 2 mm.
FIGURE 2 Periclimenes diversipes Kemp, 1922, major second pereiopod. A, ovigerous female pocl. 1.63 in Shrimps of the genus Periclimenes (Crustacea, Decapoda, Palaemonidae) associated with mushroom corals (Scleractinia, Fungiidae): linking DNA barcodes to morphology
FIGURE 2 Periclimenes diversipes Kemp, 1922, major second pereiopod. A, ovigerous female pocl. 1.63 mm, left P2, RMNH.CRUS.D.57551, GenBank MK843282; B, ovigerous female pocl. 1.25 mm, right P2, RMNH. CRUS.D.57547, GenBank MK843284; C, female pocl. 1.25 mm, left P2, RMNH.CRUS.D.57548, GenBank MK843295; D, male, pocl 1.38 mm, right P2, RMNH.CRUS.57553, GenBank MK843283. Downloaded from Brill.com 12/12/2023 03:02:30PM Scale bar = 0.4 mm. via Open Access. This is an open access article distributed under the terms of the prevailing CC-BY license at the time of publication. https://creativecommons.org/licenses/by/4.0/
FIGURE 8 in Shrimps of the genus Periclimenes (Crustacea, Decapoda, Palaemonidae) associated with mushroom corals (Scleractinia, Fungiidae): linking DNA barcodes to morphology
FIGURE 8 Mushroom coral cladogram based on published phylogenetic analyses (Gittenberger et al., 2011; Benzoni et al., 2012). The host relations of five Periclimenes species (table 3) are projected on the phylogeny reconstruction as well as the morphological traits "attached vs. free-living mode of life" (A = attached / F = free-living) and maximum recorded corallum size (Hoeksema, 1991, 2012a, 2014; Gittenberger et al., 2011) with size categories (S = small, <15 cm; M = medium, ≥15 cm and <25 cm; L = large, ≥25 cm). P. div = Periclimenes diversipes, P. gon = Periclimenes gonioporae Downloaded, P. jug = from Brill Periclimenes.com 12/ jugalis 12/, P 2023. wat03=:02:30PM Periclimenes watamuae, P. sub via=Open Periclimenes Access. This subcorallum is an sp open. nov. access article distributed under the terms of the prevailing CC-BY license at the time of publication. https://creativecommons.org/licenses/by/4.0/
A lack of genetic diversity and minimal adaptive evolutionary divergence in introduced Mysis shrimp after 50 years
<p>The successes of introduced populations in novel habitats often provide powerful examples of evolution and adaptation. In the 1950's, opossum shrimp (<em>Mysis diluviana</em>) individuals from Clearwater Lake in Minnesota, USA were transported and introduced to Twin Lakes in Colorado, USA by fisheries managers to supplement food sources for trout. Shrimp were subsequently introduced from Twin Lakes into numerous lakes throughout Colorado. Because managers kept detailed records of the timing of the introductions, we had the opportunity to test for evolutionary divergence within a known time interval. Here, we used reduced representation genomic data to investigate patterns of genetic diversity and test for genetic divergence between populations and for evidence of adaptive evolution within the introduced populations in Colorado. We found overall very low levels of genetic diversity across all populations, with evidence for some genetic divergence between the Minnesota source population and the introduced populations in Colorado. There was also little differentiation among the Colorado populations, consistent with the known provenance of a single founding population, with the exception of the population from Gross Reservoir, Colorado. Demographic modeling suggests that the population in Gross Reservoir is of hybrid origin, with an earlier founding population from an unknown source being later supplemented from another population. Despite the overall low genetic diversity we observed, F<sub>ST</sub> outlier and environmental association analyses identified multiple loci exhibiting signatures of selection and adaptive variation related to elevation and lake depth. The success of introduced species is thought to be limited by genetic variation, but our results imply that populations with limited genetic variation can become established in a wide range of novel environments.</p>
Putative photosensitivity in internal light organs (organs of Pesta) of deep-sea sergestid shrimps
<p>Many marine species can regulate the intensity of bioluminescence from their ventral photophores in order to counterilluminate, a camouflage technique whereby animals closely match the intensity of the downwelling illumination blocked by their bodies, thereby hiding their silhouettes. Recent studies on autogenic cuticular photophores in deep-sea shrimps indicate that the photophores themselves are light-sensitive. Here, our results further suggest photosensitivity in a second type of autogenic photophore, the internal organs of Pesta, found in deep-sea sergestid shrimps. Experiments were conducted ship-board on live specimens, exposing the animals to bright light, which resulted in ultrastructural changes that matched those seen in crustacean eyes during the photoreceptor membrane turnover, a process that is crucial for the proper functioning of photosensitive components. In addition, RNA-seq studies demonstrated the expression of visual opsins and phototransduction genes in organs of Pesta tissue that are known to play a role in light detection, and electrophysiological measurements indicated that the light organs are responding to light received by the eyes. The long-sought-after mechanism of counterillumination remains unknown, but evidence of photosensitivity in photophores may indicate a dual functionality of light detection and emission.</p>
Data from: Among-individual behavioural variation in the ornamental red cherry shrimp, Neocaridina heteropoda
<p><span>Personality variation, defined as among-individual differences in behaviour that are repeatable across time and context, has been reported across animal taxa. From an evolutionary perspective, characterising the amount and structure of this variation is useful since differences among-individuals are the raw material for adaptive behavioural evolution. However, it is becoming apparent that behavioural variation among-individuals also has implications for more applied areas of evolution and ecology – from invasion biology, to ecotoxicology, and selective breeding in captive systems. Here, we investigate the structure of personality variation in the red cherry shrimp, <em>Neocaridina heteropoda</em>, a popular ornamental species that is readily kept and bred under lab conditions and is emerging as a decapod crustacean model across these fields, but for which basic biological, ecological, and behavioural data is limited. Using two assays and a repeated measures approach, we quantify behaviours putatively indicative of shy-bold variation and test for sexual dimorphism and/or size-dependent behaviours (as predicted by some state-dependent models of personality). We find moderate to high behavioural repeatabilities across traits. Although strong individual level correlations across behaviours are consistent with a major personality axis underlying these observed traits, the multivariate structure of personality variation does not fully match a priori expectations of a shy-bold axis. This may reflect our ecological naivety with respect to what really constitutes bolder, more risk prone, behaviour in this species. We find no evidence for sexual dimorphism and only weak support size-dependent behaviour. Our study contributes to the growing literature describing behavioural variation in aquatic invertebrates. Furthermore, it lays a foundation for further studies harnessing the potential of this emerging model system. In particular, this existing behavioural variation could be functionally linked to life-history traits and invasive success, and serve as target of artificial selection or bioassays. It thus holds significant promise in applied research across ecotoxicology, aquaculture, and invasion biology.</span></p>
Figure 4 in New records of the shrimp Periclimenes crinoidalis Chace, 1969 (Decapoda: Palaemonidae) and its crinoid host Nemaster grandis A.H. Clark, 1909 (Echinodermata: Crinoidea) in the Caribbean Sea
Figure 4. Male of Periclimenes crinoidalis (CL 1.58 mm), associated with the crinoid Nemaster cf. grandis, in Chichiriviche de la Costa, Vargas State, Venezuela.
Figure 3 in New records of the shrimp Periclimenes crinoidalis Chace, 1969 (Decapoda: Palaemonidae) and its crinoid host Nemaster grandis A.H. Clark, 1909 (Echinodermata: Crinoidea) in the Caribbean Sea
Figure 3. Ovigerous female of Periclimenes crinoidalis (CL 2.36 mm), associated with the crinoid Nemaster grandis, in Chichiriviche de la Costa, Vargas State, Venezuela.
Figure 2 in New records of the shrimp Periclimenes crinoidalis Chace, 1969 (Decapoda: Palaemonidae) and its crinoid host Nemaster grandis A.H. Clark, 1909 (Echinodermata: Crinoidea) in the Caribbean Sea
Figure 2. Mimicry of the shrimp Periclimenes crinoidalis associated with the crinoid Nemaster cf. grandis, in Chichiriviche de la Costa, Vargas State, Venezuela.
Figure 3 in Ecological and reproductive parameters of the seabob shrimp, Xiphopenaeus spp. (Heller, 1862) on the southern coast of the state of Espírito Santo, Brazil: potential use of less sampling effort
Figure 3. Principal component analysis (PCA) for Xiphopenaeus spp. abundance and environmental variables in Anchieta region. The samples were collected between February/2013 and February/2015. Ab: Abundance; Gr: Granulometry; O.M: Organic Matter; Sal: Salinity: Temp: Temperature.
Figure 2 in Ecological and reproductive parameters of the seabob shrimp, Xiphopenaeus spp. (Heller, 1862) on the southern coast of the state of Espírito Santo, Brazil: potential use of less sampling effort
Figure 2. Boxplot of Xiphopenaeus spp. abundance at each collection point = transects, (A) and season (B) between February/2013 and February/2015. p1: Point 1; p2: Point 2; p3: Point 3. *Statistically significant difference.
Figure 6 in Ecological and reproductive parameters of the seabob shrimp, Xiphopenaeus spp. (Heller, 1862) on the southern coast of the state of Espírito Santo, Brazil: potential use of less sampling effort
Figure 6. Percentage values of gonadal development stages of Xiphopenaeus spp. at sampling points = transects, (A and B) and sampling period (C and D). Males (A and C) and females (B and D). Immature (IM), rudimentary (RU), developing (ED) and developed (DE) at each sampling point from February/2013 to February/2015. P1: Point 1, P2: Point 2, P3: Point 3.
Figure 1 in Ecological and reproductive parameters of the seabob shrimp, Xiphopenaeus spp. (Heller, 1862) on the southern coast of the state of Espírito Santo, Brazil: potential use of less sampling effort
Figure 1. Map of Brazil highlighting the state of Espírito Santo and the fishing port of Anchieta, indicating the sampling points of the seabob shrimp. (P1 = Point 1: 2m; P2 = Point 2: 5m; P3 = Point 3: 10m; blue line = Benevente River).
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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.