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403 results for “morphological characteristics”
Morphological and nutritional characteristics of Gambel's Quail, Callipepla gambelii, in the greater Phoenix metropolitan area, Arizona (July-September 2015)
Gambel's Quail, Callipepla gambelii, are gregarious birds commonly found in the southwestern deserts of the United States and Northwestern Mexico. With expanding urbanization, these birds are often found in exurban and suburban areas where they have access to food sources that may differ from those used by birds living in rural-urban fringes. To investigate this question, we compared the morphology and nutritional physiology of quail sampled at sites varying with respect to land use and cover. We hypothesized that quail living in urbanized areas have access to a greater variety of food sources and to more stable food resources, and so are in better body condition, than quail residing in less urbanized areas. We sampled birds at locations in the Phoenix, Arizona (USA) area, that vary with respect to land use and cover types. Birds were weighed and we measured their body length and chest circumference. A blood sample was collected from the jugular vein of each individual for analysis of plasma glucose, total proteins, triglycerides, and free glycerol using commercially available kits. Consistent with our hypothesis, birds living in more urbanized environments were longer, and they had larger chest circumferences and greater circulating triglyceride concentrations than birds living in less developed areas, suggesting greater access to lipid-rich foods. In addition, the abundance of grass at the sampling sites was associated positively with plasma protein concentrations but negatively with plasma free glycerol levels. Areas with more grass may provide birds with less dietary fats than the diet of urban birds, resulting in the breakdown of triglycerides into free glycerol. These findings are the first to demonstrate an association between urbanization and the morphology and nutritional physiology of Gambel's Quail.
Figure 1 in Morphological, histological and molecular characteristics of Myxobolus spp. (Cnidaria: Myxozoa) infecting the kidney of silver carp in Lake Taihu
Figure 1. Spores of Myxobolus lieni (Nie & Li, 1973) (A–B) and M. varius (Achmerov, 1960) (C–D) from Hypophthalmichthys molitrix, line drawings. Scale bars = 2 μm.
Figure 2 in Morphological, histological and molecular characteristics of Myxobolus spp. (Cnidaria: Myxozoa) infecting the kidney of silver carp in Lake Taihu
Figure 2. Spores of Myxobolus lieni (Nie & Li, 1973) (A–B) and M. varius (Achmerov, 1960) (C–D) from Hypophthalmichthys molitrix, digitized images. Scale bars = 10 μm.
Figure 3 in Morphological, histological and molecular characteristics of Myxobolus spp. (Cnidaria: Myxozoa) infecting the kidney of silver carp in Lake Taihu
Figure 3. Histopathological sections of Hypophthalmichthys molitrix kidney infected by Myxobolus spp. A–C. M. lieni (Nie & Li, 1973), in the renal tubules; D. M. varius (Achmerov, 1960), in the renal interstitium. Arrows indicate the plasmodia which contains 2–4 mature myxospores. Scale bars = 10 μm.
Figure 4 in Morphological, histological and molecular characteristics of Myxobolus spp. (Cnidaria: Myxozoa) infecting the kidney of silver carp in Lake Taihu
Figure 4. Bayesian inference trees constructed with the SSU rDNA sequences. Numbers near the nodes shows the posterior probability and bootstrap values of BI and maximum likelihood (ML), respectively. Information of GenBank accession number, infection site, host and locality follows the species name. Abbreviations: B—brain; E—encephalocoele; F—fin; G—gills; GA—gill arch; GL— capillary network of the gill lamellae; H—heart; I—intestine; K—kidney; M—mesentery; MP- palate of the mouse; MC—muscle cells; SB—swim bladder; UB—urinary bladder.
Figure 7 in Looks can be deceiving: contrasting temperature characteristics of two morphologically similar kelp species co-occurring in the Arctic
Figure 7: Effect of temperature on the relative abundance of different ontogenetic stages during gametogenesis of Laminaria digitata (left) and Hedophyllum nigripes (right) in a temperature gradient after seven days (above) and 14 days (below; mean of n = 3–4; SD not shown for clarity). Only the most developed stage was counted per female gametophyte. †All gametophytes died.
Figure 6 in Looks can be deceiving: contrasting temperature characteristics of two morphologically similar kelp species co-occurring in the Arctic
Figure 6: Sex ratio (female:male) of gametophytes of Laminaria digitata (left) and Hedophyllum nigripes (right) after 14 days in temperature gradients between 0 and 25 °C (L. digitata) and 22 °C (H. nigripes) (n = 4, mean ± SD). Different letters denote significant differences among temperatures within each species (L. digitata: Kruskal–Wallis test with multiple p-value comparison; H. nigripes: one-way ANOVA with Tukey's post hoc test). Please note that the marked deviation from an expected initial 50:50 ratio was due to applied seeding methods. †All gametophytes died.
Figure 4 in Looks can be deceiving: contrasting temperature characteristics of two morphologically similar kelp species co-occurring in the Arctic
Figure 4: Optimal quantum yield (FV/FM) of Laminaria digitata (top) and Hedophyllum nigripes (bottom) sporophytes in a temperature gradient (two weeks; left graph) and post-cultivation at 10 °C (one week; right graph). Horizontal lines represent the median; boxes, the interquartile range; whiskers, 1.5× of inter-quartile range (n = 5).
Figure 3 in Looks can be deceiving: contrasting temperature characteristics of two morphologically similar kelp species co-occurring in the Arctic
Figure 3: Photographic documentation of Laminaria digitata and Hedophyllum nigripes sporophytes exposed to a temperature gradient after post-cultivation at 10 °C. Images are not to scale. Triangular cuts marked individual sporophytes per replicate.
Figure 2 in Looks can be deceiving: contrasting temperature characteristics of two morphologically similar kelp species co-occurring in the Arctic
Figure 2: Relative growth rates (RGR; % d−1) of Laminaria digitata (top) and Hedophyllum nigripes (bottom) sporophytes in a temperature gradient over the experimental time (14 days; left side of the dotted line) and recovery at 10 °C (one week; right side of the dotted line; n = 5, mean ± SD). Each value denotes the RGR between the indicated time point and the measuring day before.
Figure 1 in Looks can be deceiving: contrasting temperature characteristics of two morphologically similar kelp species co-occurring in the Arctic
Figure 1: Standardized growth rates (GR) based on surface area (%) of Laminaria digitata (white dots) and Hedophyllum nigripes (black dots) sporophytes over two weeks in a temperature gradient (n = 5, mean ± SD). Different letters denote significant differences within each species (ANOVA with Tukey's post hoc test: α <0.05, A– D = L. digitata; a–c = H. nigripes). Asterisks indicate significant differences between standardized GR of L. digitata and H. nigripes (two-way ANOVA with Tukey's post hoc test).
Figure 5 in Looks can be deceiving: contrasting temperature characteristics of two morphologically similar kelp species co-occurring in the Arctic
Figure 5: Density of gametophytes of Laminaria digitata (A, C) and Hedophyllum nigripes (B, D) at day 7 (A, B) and day 14 (C, D) in temperature gradients between 0 and 25 °C (L. digitata) and 22 °C (H. nigripes) (n = 3–4, mean ± SD). Broken horizontal lines show the mean initial gametophyte density for each species after the acclimatization phase (day 0). †All gametophytes died.
Morphological and physiological characteristics of cassava genotypes on dry-land of ultisol soil in Indonesia
<p>This data showed the characterization of morphological and physiological characters of some cassava genotypes in Indonesia that were collected from some areas in Indonesia and now, planting in the IPB Germplasm Farm Collection at Bogor Regency, Indonesia. We have more than 50 genotypes collections. </p>
Fig. 5 in Morphological And Biological Characteristics Of Amidostomum Anseris (Nematoda, Amidostomatidae) From Anser Anser Domesticus
Fig. 5. Transverse striation of cuticle in Amidostomum anseris (n = 20) ♀ (а) and Ơ (b) at: 1 — anterior esophagus; 2 — middle esophagus; 3 — posterior esophagus; 4 — middle of body; 5 — base of cuticle process; 6 — middle of cuticle process; 7 — posterior to vulva; 8 — between vulva and anus; 9 — anus; 10 — between anus and base of the digitate process; 11 — base of the digitate process; 12 — spicule area.
Fig. 6 in Morphological And Biological Characteristics Of Amidostomum Anseris (Nematoda, Amidostomatidae) From Anser Anser Domesticus
Fig. 6. Stages of embryonic development of Amidostomum anseris: а — blastomere cleavage; b — larval formation; с — formation of L1 and L2; d — L3 (infective larva).
Fig. 3 in Morphological And Biological Characteristics Of Amidostomum Anseris (Nematoda, Amidostomatidae) From Anser Anser Domesticus
Fig. 3. Ơ Amidostomum anseris: a — distal ends of spicules, and gubernaculum; b — proximal ends of spicules.
Fig. 2 in Morphological And Biological Characteristics Of Amidostomum Anseris (Nematoda, Amidostomatidae) From Anser Anser Domesticus
Fig. 2. Caudal end of Ơ Amidostomum anseris: A.v. — anteroventral ray; P.v. — posteroventral ray; A.l. — anterolateral ray; M.l. — mediolateral ray; P.l. — posterolateral ray; E.d. — external and dorsal ray; D — dorsal ray.
Fig. 3 in Morphological And Physiological Characteristics Of Reproduction Of The Stone Marten, Martes Foina (Mammalia, Carnivora), In The Steppe Zone Of The South Of Ukraine
Fig. 3. Ovum (a) and germ of female studied during diapause of pregnancy: b — 3-blastomers zygote; c — blastula.
Fig. 2 in Morphological And Physiological Characteristics Of Reproduction Of The Stone Marten, Martes Foina (Mammalia, Carnivora), In The Steppe Zone Of The South Of Ukraine
Fig. 2. Baculate rods of copulative organ of males: a — in age of one year; b — two years; c — in adulthood.
Fig. 4 in Morphological And Physiological Characteristics Of Reproduction Of The Stone Marten, Martes Foina (Mammalia, Carnivora), In The Steppe Zone Of The South Of Ukraine
Fig. 4. The uterus of pregnant female, studied 31 December; in the right horn the highlighted location of blastula.
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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)
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.