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165 results for “interspecific variation”
Stomatal Distribution and Post-fire Recovery: Intra- and Interspecific Variation in Plants of the Pyrogenic Florida Scrub, 2023-2024
Premise of the study: Amphistomy is the presence of stomata on both leaf surfaces. This distribution of stomata can increase photosynthesis, but is relatively infrequent, which is often attributed to high costs such as water loss. This study takes place in the Florida scrub- a hot, dry, shrub-dominated habitat that naturally experiences fire. However, decades of anthropogenic suppression and the reintroduction of controlled burns has created varied fire regimes across the region. In this study, we investigated the links between amphistomy and fire by determining (1) how common the trait is in this habitat, and (2) within-species variation before and after experimental fire, and across a time-since-fire gradient (0.25 - 50 years). Methods: We (1) surveyed 116 plant species across scrub habitats for amphistomy presence, and (2) experimentally and observationally investigated intraspecific variation in stomatal traits in response to fire for two post-fire resprouting species of palmetto, Serenoa repens and Sabal etonia (Arecaceae). Key results: Amphistomy was present in 62.9% of all surveyed species and 85.7% of post-fire obligate reseeders, suggesting amphistomy may be beneficial in this group and in the Florida scrub conditions. The stomatal ratio (upper/total stomatal density) was generally stable in response to fire. Stomatal density decreased following fire in S. etonia, with both species experiencing high variation in the post-fire years. Conclusions: Amphistomy is common in this habitat and relatively stable within species in response to fire, while stomatal density responds plastically during postfire regrowth.
Fig. 11 in Interspecific Variation In Moschiola, The Indian Chevrotain
Fig. 11. Skins of Moschiola, ventral view. Left to right: Moschiola kathygre, new species (BM 77.4.14.1), M. meminna (BM 15.3.1.251), M. indica (BM 19.6.3.86).
Fig. 10 in Interspecific Variation In Moschiola, The Indian Chevrotain
Fig. 10. Skins of Moschiola, dorsal view. Left to right: Moschiola kathygre, new species (BM 77.4.14.1), M. meminna (BM 15.3.1.251), M. indica (BM 19.6.3.86).
Fig. 9 in Interspecific Variation In Moschiola, The Indian Chevrotain
Fig. 9. Discriminant analysis, based on three cranial variables. DF1 – 82.8% of variance, DF2 – 17.2 % of variance.
Fig. 2 in Relationships between morphology, diet and spatial distribution: testing the effects of intra and interspecific morphological variations on the patterns of resource use in two Neotropical Cichlids
Fig. 2. Head of Satanoperca pappaterra (a) and Crenicichla britskii (b), showing differences in the mouth protrusion.
Fig. 2 in Does size matter for horny beetles? A geometric morphometric analysis of interspecific and intersexual size and shape variation in Colophon haughtoni Barnard, 1929, and C. kawaii Mizukami, 1997 (Coleoptera: Lucanidae)
Fig. 2 Landmarks used for geometric morphometric analysis of Colophon specimens: a male C. haughtoni mandible; b male C. kawaii mandible; c male C. haughtoni head; d female head; e pronotum; f elytron. Scale bars represent 2 mm
Fig. 1 Adult Colophon beetles. a Colophon haughtoni. b in Does size matter for horny beetles? A geometric morphometric analysis of interspecific and intersexual size and shape variation in Colophon haughtoni Barnard, 1929, and C. kawaii Mizukami, 1997 (Coleoptera: Lucanidae)
Fig. 1 Adult Colophon beetles. a Colophon haughtoni. b Ventral photograph of C. haughtoni head showing (1) gena, (2) mandible base, (3) ventral process, (4) dorsal process and (5) apex of the mandible. c Ventral view of C. kawaii head. Scale bars represent 4 mm (a) and 2 mm (b, c). Photographs by H.J. de Klerk
Figure 2 in Interspecific and intraspecific size and shape variation in skull of two closely related species Bufo bufo (Linnaeus, 1758) and Bufo verrucosissimus (Pallas, 1814) from Turkey
Figure 2. Location of 17 two-dimensional landmarks on the dorsal (A) and ventral (B) skull side of a common toad. A. Dorsal side: 1. Snout tip, 2. Anterior end of suture between premaxilla and maxilla, 3. Anterior end of nasal, 4. Lateralmost point of nasal, 5. Mostanterior point of frontoparietal, 6. Lateralmost point of nasal (posterior), 7. Middle point of the median edge of frontoparietal, 8. Mostposterior median point of frontoparietal, 9. Posterior end of suture between frontoparietal and prootic, 10. Anterior end of suture between frontoparietal and prootic, 11. Middle point of the lateral edge of frontoparietal, 12. Mostanterior point of squamosal, 13. Posterior end of squamosal in contact with prootic, 14. Mostposterior point of prootic, 15. Mostposterior point of maxilla, 16. Posterior end of quadrate, 17. Medial tip of occipital. B. Ventral side: 1. Anteriormost point of premaxilla, 2. Anteriolateral end of premaxilla, 3. Mostposterior median end of premaxilla, 4. Posteriolateral end of premaxilla, 5. Lateralmost point of vomer, 6. Mostposterior end of vomer, 7. Most median point of palatine, 8. Anteriolateral end of palatine, 9. Posteriolateral end of palatine (anterior end of suture between palatine and pterygoid or anterior end of pterygoid), 10. Posteriomedian end of pterygoid, 11. Posteriolateral end of pterygoid, 12. Lateralmost end of parasphenoid, 13. Mostanterior median end of parasphenoid, 14. Mostposterior median end of parasphenoid, 15. Posterior end of maxilla in contact with quadratojugal, 16. Posterior end of quadratojugal, 17. Mostposterior end of occipital condyl.
Figure 1 in Interspecific and intraspecific size and shape variation in skull of two closely related species Bufo bufo (Linnaeus, 1758) and Bufo verrucosissimus (Pallas, 1814) from Turkey
Figure 1. Distribution map of Bufo bufo (blue) and Bufo verrucosIssImus (yellow) in Turkey according to IUCN Red List and Özdemir et al. (2020), and geographical positions of analysed populations.
Figure 3 in Interspecific and intraspecific size and shape variation in skull of two closely related species Bufo bufo (Linnaeus, 1758) and Bufo verrucosissimus (Pallas, 1814) from Turkey
Figure 3. The positions of the specimens in morphospaces defined by the first two principal axes derived from covariance matrices of skull shape variables. Blue dots; B. bufo, yellow dots; B. verrucosissimus. DC: dorsal cranium, VC: ventral cranium.
Fig. 1 in Interspecific variation of prevalence by Scaphanocephalus (Platyhelminthes: Trematoda: Heterophyidae) metacercariae in parrotfishes (Labridae: Scarini) from an Okinawan coral reef
Fig. 1. Cyst of Scaphanocephalus parasite (arrows) infected on the pectoral fins and lateral body skin of parrotfish Chlorurus sordidus.
Fig. 2 in Interspecific variation of prevalence by Scaphanocephalus (Platyhelminthes: Trematoda: Heterophyidae) metacercariae in parrotfishes (Labridae: Scarini) from an Okinawan coral reef
Fig. 2. Phylogenetic tree of genera in Scarini of Labridae (modified from Streelman et al., 2002) and parasite prevalence in each species. *: 100%.
Figure 3 in Web decoration polymorphism in Argiope Audouin, 1826 (Araneidae) spiders: ontogenetic and interspecific variation
Figure 3. Percentage of spiders from the three species surveyed found on decorated webs sorted by size class: A, below 4.0 mm; B, 4.0–5.9 mm; C, 6.0–7.9 mm; D, 8.0 mm. The frequency of decorations in adult Argiope keyserlingi was taken from Herberstein (2000).
Figure 2 in Web decoration polymorphism in Argiope Audouin, 1826 (Araneidae) spiders: ontogenetic and interspecific variation
Figure 2. Schematic of the Y-maze used to test the response of prey to cruciate and linear web decorations.
Figure 5 in Web decoration polymorphism in Argiope Audouin, 1826 (Araneidae) spiders: ontogenetic and interspecific variation
Figure 5. Mean decoration length (¡SE) in food-deprived (grey bars) and food-supplemented (white bars) spiders.
Figure 4 in Web decoration polymorphism in Argiope Audouin, 1826 (Araneidae) spiders: ontogenetic and interspecific variation
Figure 4. Decoration form by juvenile size class: A, below 4.0 mm; B, 4.0–5.9 mm; C, 6.0–7.9 mm; D, 8.0 mm. (a) Argiope keyserlingi; (b) A. aetherea; (c) A. picta.
Figure 1 in Web decoration polymorphism in Argiope Audouin, 1826 (Araneidae) spiders: ontogenetic and interspecific variation
Figure 1. Map of Queensland showing the approximate ranges of Argiope aetherea and A. picta from this study.
FIG. 14. — A in Quaternary and Recent shells of Ocenebra erinaceus (Linnaeus, 1758) and O. brevirobusta Houart, 2000 (Mollusca, Muricidae, Ocenebrinae): reflections on the intra- and interspecific variations
FIG. 14. — A, the two first axes of a PCA performed on the harmonics of Fourier for the ventral view; B, the same for the apical view; C, D, location of the the populations means in the canonical space corresponding to the amplitudes of the harmonics of Fourier for the apical view; C, the two first canonical axes CA1 versus CA2; D, canonical axes CA1 versus CA3; green triangle, Moroccan Atlantic; yellow triangle, Cap Rhir; green square, Oualidia (O. brevirobusta). Red group, Mediterranean forms (Ocenebra erinaceus (Linnaeus, 1758)); blue group, North Atlantic forms (O. erinaceus); green group, Moroccan Atlantic forms (O. brevirobusta Houart, 2000), black square (Ocinebrellus inornatus (Récluz, 1851)). Abbreviations: P, Pleistocene; Pl, Pliocene.
FIG. 15. — A in Quaternary and Recent shells of Ocenebra erinaceus (Linnaeus, 1758) and O. brevirobusta Houart, 2000 (Mollusca, Muricidae, Ocenebrinae): reflections on the intra- and interspecific variations
FIG. 15. — A, average Fourier power spectrum for the apical view, 99.95% of the power is described by the first nine harmonics, represented by the arrow; B, same for the ventral view, 99.95% of the power is described by the first 12 harmonics, represented by the arrow.
FIG. 11 in Quaternary and Recent shells of Ocenebra erinaceus (Linnaeus, 1758) and O. brevirobusta Houart, 2000 (Mollusca, Muricidae, Ocenebrinae): reflections on the intra- and interspecific variations
FIG. 11. — Majority rule consensus tree obtained by the comput- er program Winclada99 (Lenght: 100, CI: 0.48, RI: 0.67). Abbreviations: H, Holocene; Md, Middle Age; P, Pleistocene; Pl, Pliocene; R, Recent; s.f., subfossil; O., Ocenebra.
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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
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International Brain Laboratory public data
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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.