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533 results for “Brazilian coast”
FIGURE 4 in A new marine intertidal chironomid from the Brazilian coast (Diptera: Chironomidae: Telmatogetoninae)
FIGURE 4. Telmatogeton yamaguchiae sp. n., larva. A. Frontal apotome and dorsal sclerites. B. Antenna. C. Premandible. D. Mandible. E. Mentum.
FIGURE 3 in A new marine intertidal chironomid from the Brazilian coast (Diptera: Chironomidae: Telmatogetoninae)
FIGURE 3. Telmatogeton yamaguchiae sp. n., pupa. A. Pupa inside cocoon covered with grains of sand. B. Thorax and thoracic horn, lateral view. C. Plastron plate with rosette. D. Frontal apotome. E. Terminal disc.
FIGURE 2 in A new marine intertidal chironomid from the Brazilian coast (Diptera: Chironomidae: Telmatogetoninae)
FIGURE 2. Telmatogeton yamaguchiae sp. n., female. A. Genitalia in dorsal view, TIX and detail of notum (No), spermathecal ducts (Spt), coxosternapodeme (Csa), gonocoxite IX (Gc IX), gonostylus (Gs) and cercus (Ce). B. Genitalia in ventral view, detail of gonapophysis VIII (Gp VIII).
FIGURE 1 in A new marine intertidal chironomid from the Brazilian coast (Diptera: Chironomidae: Telmatogetoninae)
FIGURE 1. Telmatogeton yamaguchiae sp. n., male. A. Habitus of imago, lateral view. B. Head, frontal view. C. Antenna. D. Wing. E. Hypopygium in dorsal view, with tergite IX removed. F. Aedeagal complex, details of internal apodemes (Ap), aedeagal lobes (AL), phallapodeme (Pha) and transverse sternapodeme (Tsa).
FIGURE 5 in New records of family Hormathiidae (Cnidaria: Actiniaria) from Brazilian coast with description of Paraphelliactis labiata n. sp.
FIGURE 5. Cnidae of Paraphelliactis labiata n. sp. A) Robust spirocyst. B) Gracile spirocyst. C, D, F, H, I, K, L, M, N) Basitrichs. E, G, J) Microbasic p-mastigophore. Scale bar: 10 μm.
FIGURE 4 in New records of family Hormathiidae (Cnidaria: Actiniaria) from Brazilian coast with description of Paraphelliactis labiata n. sp.
FIGURE 4. External view and histology of Paraphelliactis labiata n. sp. A) Longitudinal section of the uppermost part of the column showing the marginal sphincter muscle (arrow). B) Cross section of a tentacle showing the ectodermal longitudinal musculature (arrow). C) Top view of the body, evidencing the oral disc and one of the two siphonoglyphs (arrow) D) Cross section of the column at actinopharynx level showing cycles of mesenteries (roman numbers), and unpaired mesentery of the fourth and fifth cycle (asterisk) E) Scheme of the mesenterial arrangement shown in D (mesenteries of fifth cycle indicated by asterisks). Abbreviations: Lm, longitudinal muscle; Me, mesoglea; Ms, marginal sphincter; Pa, parietobasilar muscle; Re, retractor muscle; S, siphonoglyph. Scale bars: A, D, 500 µm; B, 200 µm; C, 10 mm.
FIGURE 3 in New records of family Hormathiidae (Cnidaria: Actiniaria) from Brazilian coast with description of Paraphelliactis labiata n. sp.
FIGURE 3. External view of Paraphelliactis labiata n. sp. Holotype: A) Lateral view of the holotype. Note the distinct pedal disc coloration and its complete absence of tubercles. B) Oral view of the holotype revealing a pronounced flattening of the column due to the overlapping lobes. Paratypes: C) Detail of the oral disc of the medium-sized individual, showing small and large tubercles. D) Smaller paratype. Abbreviations: Od, oral disc; Tu, tubercles. Scale bars: A, B, 30 mm; C, 3 mm; D, 2 mm.
FIGURE 2. A in New records of family Hormathiidae (Cnidaria: Actiniaria) from Brazilian coast with description of Paraphelliactis labiata n. sp.
FIGURE 2. A) Paraphelliactis labiata n. sp., holotype. B) Monactis vestita on Drillia sp. empty shell. C) Phelliactis robusta. D) Phelliactis sp. Abbreviations: Mn, manganese nodule. Scale bars: A, 30 mm; B, 10 mm; C, 20 mm.
FIGURE 6 in New records of family Hormathiidae (Cnidaria: Actiniaria) from Brazilian coast with description of Paraphelliactis labiata n. sp.
FIGURE 6. External view and histology of the sea anemones in this paper. A, E–F) A, E–F) Phelliactis sp. A) Detail of the distended base holding a manganese nodule. B–C) Monactis vestita. B) Individual with base greatly distended, evidencing the arrangement of mesenteries. C) Cross section through the midcolumn, showing the four cycles of mesenteries (represented in roman letters). D) Individual of Phelliactis robusta attached to hexactinellid sponge fibers. E) Detail of the tubercles at distal column, near the oral disc. F) Cross section at the midcolumn showing a pair of mesenteries from the second cycle and the diffuse musculature of the retractor (arrows). Abbreviations: Re, retractor muscle. Scale bars: A and D, 10 mm; B, 5 mm; C, 0.5 mm; and E, 2 mm; F, 200 μm.
More than meets the eye: syntopic and morphologically similar mangrove killifish species show different mating systems and patterns of genetic structure along the Brazilian coast
<p><a name="_Hlk40344892">Different mating systems can strongly affect the extent of genetic diversity and population structure among species. Given the increased effects of genetic drift on reduced population size, theory predicts that species undergoing self-fertilization should have greater population structure than outcrossed species, however demographic dynamics may affect this scenario. </a>The mangrove killifish clade is composed of the two only known examples of self-fertilising species among vertebrates (<i>Kryptolebias marmoratus </i>and <i>K</i>. <i>hermaphroditus</i>). A third species in this clade, <i>K. ocellatus, </i>inhabits mangrove forests in southeast Brazil, however its mating system and patterns of genetic structure have been rarely explored. Here, we examined the genetic structure and phylogeographic patterns of <i>K</i>. <i>ocellatus</i> along its distribution, using mitochondrial DNA and microsatellites to compare its patterns of genetic structure with the predominantly selfing and often syntopic, <i>K</i>. <i>hermaphroditus.</i> Our results indicate that <i>K</i>. <i>ocellatus</i> reproduces mainly by outcrossing across much of its known range, with no current evidence of selfing, despite being an androdioecious species. Our results also reveal a stronger population subdivision in <i>K</i>. <i>ocellatus </i>compared to <i>K</i>. <i>hermaphroditus</i>, contrary to the theoretical predictions based on reproductive biology of the two species. Our findings indicate that, although morphologically similar, <i>K</i>. <i>ocellatus </i>and <i>K</i>. <i>hermaphroditus</i> had remarkably different evolutionary histories when colonising the same mangrove areas in south-eastern Brazil, with other factors (e. g. time of colonisation, dispersal/establishment capacity) having more profound effects on the current population structuring of those species than differences in mating systems.</p>
Supplementary material 2 from: Stampar SN, Gamero-Mora E, Maronna MM, Fritscher JM, Oliveira BSP, Sampaio CLS, Morandini AC (2020) The puzzling occurrence of the upside-down jellyfish Cassiopea (Cnidaria: Scyphozoa) along the Brazilian coast: a result of several invasion events? Zoologia 37: 1-10. https://doi.org/10.3897/zoologia.37.e50834
Table S1. Genetic distance matrix over sequence pairs within Cassiopea andromeda. Values shown below diagonal are uncorrected pairwise distances. Above the diagonal are the number of bases that are not identical. 1. Cassiopea_Alagoas_1; 2. Cassiopea_Alagoas_2; 3. Cassiopea_Alagoas_3; 4. Cassiopea_Alagoas_4; 5. CandroHaw8; 6. CandroHaw10; 7. CandroHaw7; 8. CandroHaw9; 9. CandroHaw1; 10. CandroEgyRSea; 11. Cbrazil; 12. CxamaBerm3 13. CxamaBerm4 14. CandroHaw4 15. CxamaBerm1 16. CandroHaw5 17. CxamaBerm2 18. CxamaUSAFl1.
Supplementary material 1 from: Stampar SN, Gamero-Mora E, Maronna MM, Fritscher JM, Oliveira BSP, Sampaio CLS, Morandini AC (2020) The puzzling occurrence of the upside-down jellyfish Cassiopea (Cnidaria: Scyphozoa) along the Brazilian coast: a result of several invasion events? Zoologia 37: 1-10. https://doi.org/10.3897/zoologia.37.e50834
Figure S1. Map showing the collection localities of Cassiopea sequences used in the phylogenetic analysis. The green square refers to the site of collection of the population of C. andromeda from Alagoas, Brazil. Each color indicates a species. Cassiopea sp. 5 does not appear because of its unknown locality.
FIGURE 7 in Ampeliscidae from the Brazilian coast. Record of Ampelisca burkey Barnard & Thomas, 1989 and descriptions of two new species of Ampelisca (Crustacea, Amphipoda)
FIGURE 7. Ampelisca moreirai sp. nov.; female, 7.7mm, holotype, MZUSP 16841; male 7.0mm, paratype. MZUSP 16843.
FIGURE 11 in Redescription of Chrysaora lactea Eschscholtz, 1829 (Cnidaria, Scyphozoa) from the Brazilian coast, with designation of a neotype
FIGURE 11. Oral view of a young medusa of Chrysaora lactea reared in laboratory, showing development of the secondary tentacles (arrows) on the subumbrellar portion of the marginal lappets. Scale = 0.5 mm.
FIGURE 8 in Redescription of Chrysaora lactea Eschscholtz, 1829 (Cnidaria, Scyphozoa) from the Brazilian coast, with designation of a neotype
FIGURE 8. Side view of an advanced strobila of Chrysaora lactea, showing development of chain of ephyrae at different stages. Note that the tentacles of the polyp have already regenerated. Height approximately 1.5 mm.
FIGURE 2 in Redescription of Chrysaora lactea Eschscholtz, 1829 (Cnidaria, Scyphozoa) from the Brazilian coast, with designation of a neotype
FIGURE 2. Diagrammatic exumbrellar view of adult medusa of Chrysaora lactea. Note the arrangement of the tentacles (5 per octant) and papillae on exumbrella.
FIGURE 5 in Redescription of Chrysaora lactea Eschscholtz, 1829 (Cnidaria, Scyphozoa) from the Brazilian coast, with designation of a neotype
FIGURE 5. Diagrammatic side view of an oral arm of an adult medusa of Chrysaora lactea. Note the Vsection, frilled edge and spiral distal portion.
FIGURE 10 in Redescription of Chrysaora lactea Eschscholtz, 1829 (Cnidaria, Scyphozoa) from the Brazilian coast, with designation of a neotype
FIGURE 10. Nematocyst complement of different stages in the life cycle of Chrysaora lactea. A– D: scyphistoma; E–H: ephyra; I–N: medusa (tentacle). A–B, E–F, G–H, K–L: undischarged and discharged holotrichous isorhizae; C–D, I–J, M–N: undischarged and discharged birhopaloids, type II (as heterotrichous microbasic euryteles in Morandini et al., 2004). I, K and M photographed in preserved specimen, all others in living ones. Scale = 15 µm.
FIGURE 13 in Redescription of Chrysaora lactea Eschscholtz, 1829 (Cnidaria, Scyphozoa) from the Brazilian coast, with designation of a neotype
FIGURE 13. Oral view of a young medusa of Chrysaora lactea reared in laboratory, showing developed tertiary tentacle (arrow) between primary (central) and secondary (lateral, closer to the rhopalium). Scale = 1.5 cm.
FIGURE 1 in Redescription of Chrysaora lactea Eschscholtz, 1829 (Cnidaria, Scyphozoa) from the Brazilian coast, with designation of a neotype
FIGURE 1. Side view of an adult medusa (bell diameter 12 cm) of Chrysaora lactea. Note the shape of the umbrella, the colour pattern, and only 3 tentacles per octant. Specimen photographed in an aquarium.
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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
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