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513 results for “southern Mexico”
FIGURE 3 in More new Diplotrema earthworm species from southern Mexico (Annelida, Crassiclitellata, Acanthodrilidae, Acanthodrilinae)
FIGURE 3. Diplotrema oaxacana sp. nov., spermathecae. A. Anterior from segment 8, right side, dorsal view. B. Posterior from segment 9, left side, ventral view; both A and B from paratype IEOL 3102. C. Anterior from segment 8, left side, dorsal view, paratype IEOL 4846; duct is lacking due to a fragmentation of the spermatheca during preparation. D. Anterior from segment 8, left side, ventral view, holotype IEOL 3103. E. Anterior from segment 8, dorsal view. F. Posterior from segment 9, left side, ventral view; both E and F from paratype IEOL 3262). A=ampulla, Di=diverticulum, Du=duct. Scales 2 mm.
FIGURE 10 in More new Diplotrema earthworm species from southern Mexico (Annelida, Crassiclitellata, Acanthodrilidae, Acanthodrilinae)
FIGURE 10. Geographic distribution of Diplotrema oaxacana sp. nov., Diplotrema tabascensis sp. nov, and Diplotrema kaxyebensis sp. nov. For each species locality the type of vegetation is shown: pine forest (square), tropical subdeciuous forest (triangle) and fallow of cloud forest (circle).
FIGURE 2 in More new Diplotrema earthworm species from southern Mexico (Annelida, Crassiclitellata, Acanthodrilidae, Acanthodrilinae)
FIGURE 2. Diplotrema oaxacana sp. nov., internal, holotype IEOL 3103. A. Latero-dorsal view of intestinal segments 21–23 showing an apparently double dorsal vessel (Dv), scale 0.5 mm. B. Dorsal view of segments 17–22, showing the muscular duct (PrD) and glandular part (PrG) of prostates and the large follicles (PS) containing penial setae. H=holonephridia, I=intestine, VNc=ventral nerve-cord. Intestine was removed to facilitate observations; scale 0.5 mm.
FIGURE 9 in More new Diplotrema earthworm species from southern Mexico (Annelida, Crassiclitellata, Acanthodrilidae, Acanthodrilinae)
FIGURE 9. Diplotrema kaxyebensis sp. nov., holotype IEOL 3334. A. Right penial seta b of segment 19, scale 150 µm. B. Apex of same penial seta 19b, scale 65 µm. C. Left genital seta of segment 8, scale 50 µm; the two fractures occurred during its extraction.
FIGURE 8 in More new Diplotrema earthworm species from southern Mexico (Annelida, Crassiclitellata, Acanthodrilidae, Acanthodrilinae)
FIGURE 8. Diplotrema kaxyebensis sp. nov., holotype IEOL 3334, external (A,B) and internal (C,D). A. Ventral view of anterior region, scale 1 mm. B. Ventral view of segments 14–20 showing genital papillae (Gp), male pores (Mp) and prostatic pores (Pp), scale 1 mm. C. Spermatheca of segment 8, right side, lateral view. D. Schematic illustration of same spermatheca after raising both duct and diverticulum; in both C and D scale 0.35 mm and A=ampulla, Di=diverticulum, Du=duct.
FIGURE 6 in More new Diplotrema earthworm species from southern Mexico (Annelida, Crassiclitellata, Acanthodrilidae, Acanthodrilinae)
FIGURE 6. Diplotrema tabascensis sp. nov., internal, dorsal view. A. Segments 16–19 showing the muscular duct (PrD) and glandular part (PrG) of prostates and follicles containing genital (GS) and penial (PS) setae. H=holonephridia; paratype IEOL 121, scale 0.5 mm. B. Right spermatheca from segment 9, holotype IEOL 119, scale 0.4 mm. A=ampulla, Di=diverticulum, Du=duct. C. Right spermatheca from segment 8, paratype IEOL 120, scale 0.4 mm.
FIGURE 5 in More new Diplotrema earthworm species from southern Mexico (Annelida, Crassiclitellata, Acanthodrilidae, Acanthodrilinae)
FIGURE 5. Diplotrema tabascensis sp. nov., external, anterior region. A. Ventral view of holotype IEOL 119, scale 1 mm. B. Ventral view of paratype IEOL 122, scale 1 mm. C. Ventral view of segments 16–20 showing genital papillae (Gp) and prostatic pores (Pp), scale 0.5 mm. D. Ventral view of segments 7–9 showing spermathecal pores (Sp), scale 0.5 mm; both C and D from paratype IEOL 120.
FIGURE 4 in A new species of Cephalocereus (Cactaceae) from southern Mexico
FIGURE 4. Phylogenetic position of Cephalocereus parvispinus based on seven chloroplast markers. Bayesian inference, posterior probabilities are indicated at the nodes.
FIGURE 2 in A new species of Cephalocereus (Cactaceae) from southern Mexico
FIGURE 2.Reproductive structures of Cephalocereus parvispinus.A. Flower on fertile zone. B. Apex of fertile stem. C. Flower in longitudinal section, showing inner and outer sections. D. Stems and fruits. E. Fruits.
FIGURE 3 in A new species of Cephalocereus (Cactaceae) from southern Mexico
FIGURE 3. SEM micrographs of Cephalocereus parvispinus seeds. A. Lateral view. B. Hilum-micropylar region. C. Close-up of lateral view.
FIGURE 1 in A new species of Cephalocereus (Cactaceae) from southern Mexico
FIGURE 1. Main characteristics of Cephalocereus parvispinus.A. Plants in its habitat. B. Arborescent plant. C. Juvenile plants. D. Apex of infertile stem.
FIGURE 3 in An outstanding new species of Senna (Fabaceae: Caesalpinioideae) from southern Puebla, Mexico
FIGURE 3. SEM images of Senna acatlanensis. A—Staminode. B—Tip of the anther of a short fertile stamen. C—Tip of the anther of a long fertile stamen. D—Pollen grains on theca. E—Style and stigma. F—Ramified filaments of short stamens. G—Bifurcation of anthers of a long stamen. H—Stigma truncate, with fringed hairs and secretion containing pollen grains. Scale bars at images. SEM photos by Berenit Mendoza Garfias.
FIGURE 2 in An outstanding new species of Senna (Fabaceae: Caesalpinioideae) from southern Puebla, Mexico
FIGURE 2. Illustration of Senna acatlanensis. A—Flowering branch, showing ribs, filiform stipules, 4-leaflets' leaves and axillary racemose inflorescence, with floral buds and flowers. B—Detail of leaf gland on proximal pair of leaflets. C—Standard petal, clawed, and three-veined. D—Androecium heteranthery, staminodes (4), central stamens (6); medium central stamen (1), and large abaxial stamen (2) and gynoecium. E—Fruit, cylindrical and with a wide suture. F—Seed, oblong, without areoles. A–F: C. Rojas-Martínez 68 (MEXU). Scale bars at structures. Illustration by Elvia Esparza.
FIGURE 1 in An outstanding new species of Senna (Fabaceae: Caesalpinioideae) from southern Puebla, Mexico
FIGURE 1. Habitat, plant habit, leaves and inflorescence with flowers of Senna acatlanensis. A—Location of S. acatlanensis populations, view of the city of Acatlán de Osorio, Puebla. B—Habitat, ecotone of seasonal dry tropical forest and oak land, with cactus Escontria chiotilla (F.A.C. Weber) Rose. C—CRM holding an inflorescence of this new species. D—Leaf with two pair of leaflets. E—Stipule. F—Leaf with gland on proximal pair of leaflets. G—Inflorescence. H—Flower buds. I—Flower starting anthesis. J—Flower with style on the right side. K—Flower with style on the left side. L—Flower stamens and staminodes. Photos by Helga Ochoterena and Cecilia Rojas-Martínez.
FIGURE 2 in Living on the rocks: a new species of Stenanona (Annonaceae) from karst limestone forests of southern Mexico
FIGURE 2. Phylogenetic relationships and morphological differentiation of Stenanona zoque. A. From top to bottom, flowers of Stenanona migueliana, Stenanona stenopetala and Stenanona zoque. B. The Bayesian tree based analysis of seven plastid regions (psbA-trnH, trnL-F, rps16-trnQ introns/spacers and matK, ndhF, rbcL and ycf1 exons) and nuclear ribosomal ITS (modified from Ortiz-Rodriguez et al. 2018). In the phylogenetic tree Stenanona zoque (in red) is placed in subclade A of the Desmopsis-Stenanona clade.
FIGURE 1. Stenanona zoque. A. Habit. B. Abaxial leaf surface. C in Living on the rocks: a new species of Stenanona (Annonaceae) from karst limestone forests of southern Mexico
FIGURE 1. Stenanona zoque. A. Habit. B. Abaxial leaf surface. C. Longitudinal section of flower showing carpels and stamens. D. Inflorescence (rhipidium) with elongate, branched peduncle (sympodial rachis) with several simultaneous long-pedicellate flowers. E. Inflorescence (rhipidium) with a short peduncle and one long-pedicellate mature flower and one floral bud. Drawn by Christian Valencia Celiz from the type.
FIGURE 3 in Living on the rocks: a new species of Stenanona (Annonaceae) from karst limestone forests of southern Mexico
FIGURE 3. Distribution of Stenanona zoque (yellow dots), Stenanona migueliana (green triangles) and Stenanona stenopetala (blue squares) based on georeferenced localities available at the Global Biodiversity Information Facility.
Figure 1 in Recording potential predators of herpetofauna in southern Mexico using camera traps and realistic models
Figure 1. Location of the Area de Proteccion y Desarrollo de Ceratozamia (APDC) in south-east Veracruz, Mexico. Black circles show the positions of the 13 camera traps within the study area. Land use layer obtained from Karra et al. (2021) with a resolution of 10 m.
Figure 2 in Recording potential predators of herpetofauna in southern Mexico using camera traps and realistic models
Figure 2. Colouration in life of Craugastor loki (a) and Ninia sebae (c) and their respective painted models (b and d) with embedded piece of wire.
Fig. 1 in Two New Sulcate Species of Dichelonyx Harris (Coleoptera: Scarabaeidae: Melolonthinae: Dichelonychini) from Southern California, USA and Baja California, Mexico
Fig. 1. Distribution of Dichelonyx magnesae, new species (■) and Dichelonyx bajaensis, new species (▲) in southern California, USA and Baja California, Mexico.
ScienceDex guides
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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.