Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
88
datasets available to search
ShareScore release 0.9.0
Dataset results
88 results for “Lake Malawi”
FIGURES 28–31 in The genus Afrocymbella (Bacillariophyceae) from lakes Malawi and Tanganyika, with description of new fossil and extant species
FIGURES 28–31. Afrocymbella symmetrica sp. nov., SEM internal valve views. 28. View of the whole valve. 29. Detail of valve ends showing APF with knobby jointed ridge of silica. 30. Detail of mid-valve showing internal openings of areolae without velum, proximal raphe ends covered by flap-like silica development, and antler-like intermissio stigmoid. 31. Close view of the bisected distal raphe terminal fissures, terminating into small lobed helictoglossa (black arrow). Scale bars = 10 μm (Fig. 28), 2 μm (Figs 29–31).
FIGURES 54–56 in The genus Afrocymbella (Bacillariophyceae) from lakes Malawi and Tanganyika, with description of new fossil and extant species
FIGURES 54–56. Afrocymbella nyassae sp. nov., SEM external valve views. 54. Half-valve showing uniseriate striae and single stigmoid positioned distally from the round, slightly asymmetric central area. 55. View of the whole valve showing raphe structure and striae continuing onto valve mantle. 56. Close view of distal raphe terminal fissure and APF of round poroids. Scale bars = 5 μm (Fig. 54), 2 μm (Fig. 55), 1 μm (Fig. 56).
FIGURES 32–53 in The genus Afrocymbella (Bacillariophyceae) from lakes Malawi and Tanganyika, with description of new fossil and extant species
FIGURES 32–53. Afrocymbella nyassae sp. nov., LM valve views. All valves displayed from the type material (core sample MAL05-1C- 26E2, 17–18 cm, ~135.5 ka). Fig. 39. Holotype specimen. Scale bar = 10 μm.
FIGURES 112–115 in The genus Afrocymbella (Bacillariophyceae) from lakes Malawi and Tanganyika, with description of new fossil and extant species
FIGURES 112–115. Afrocymbella cocquytiana sp. nov., SEM internal valve views. 112. View of the whole valve showing raphe structure and areolae without velum. 113. Detail of mid-valve showing proximal raphe ends covered by flap-like silica development and antler-like intermissio stigmoid. 114. Close view of valve apices showing APF with knobby jointed ridge of silica. 115. Distal raphe fissures slightly raised into small helictoglossae. Scale bars = 10 μm (Fig. 112), 2 μm (Figs 113–115).
FIGURE 1 in The genus Afrocymbella (Bacillariophyceae) from lakes Malawi and Tanganyika, with description of new fossil and extant species
FIGURE 1. Map of the lakes Tanganyika and Malawi, showing the sampling locations of modern (red circles) and fossil (cores MAL05- 1C and NPO4-KH1-1K; white circles) specimens used in this study.
FIGURES 144–147 in The genus Afrocymbella (Bacillariophyceae) from lakes Malawi and Tanganyika, with description of new fossil and extant species
FIGURES 144–147. Afrocymbella gracilis, LM valve views. Observed in samples from Chituta Bay and Kombe, Lake Tanganyika. Scale bar = 10 μm.
FIGURES 109–111 in The genus Afrocymbella (Bacillariophyceae) from lakes Malawi and Tanganyika, with description of new fossil and extant species
FIGURES 109–111. Afrocymbella cocquytiana sp. nov., SEM external valve views. 109. View of the whole valve showing raphe structure, slit-like areolae, and APF on footpole. 110. Detail of mid-valve showing dorsally deflected proximal raphe ends, small central nodule, and round to slightly elongated stigmoid dorsally positioned. 111. Detail of valve apex showing the striae structure and APF. Scale bars = 10 μm (Fig. 109), 2 μm (Figs 110–111).
FIGURES 2–23 in The genus Afrocymbella (Bacillariophyceae) from lakes Malawi and Tanganyika, with description of new fossil and extant species
FIGURES 2–23. Afrocymbella symmetrica sp. nov., LM valve views. 2–19, 23. Valves from the type material, core NPO4-KH1-1K, Drive 4, 43–44 cm sample (~50 ka). Fig 9. Holotype specimen. 20–22. Valves from modern sample. Scale bar = 10 μm.
FIGURES 24–27 in The genus Afrocymbella (Bacillariophyceae) from lakes Malawi and Tanganyika, with description of new fossil and extant species
FIGURES 24–27. Afrocymbella symmetrica sp. nov., SEM external valve views. 24, 26. View of the whole valve showing raphe structure, striae on valve mantle, APF on footpole, and dorsally positioned stigmoid. 25. Detail of valve apex showing the striae structure and APF. 27. Detail of mid-valve showing dorsally deflected proximal raphe ends, small diamond-shaped central area, and slightly elongated stigmoid. Scale bars = 5 μm (Figs 24, 26), 2 μm (Fig. 27), 1 μm (Fig. 25).
Rare morph Lake Malawi mbuna cihclids benefit from reduced aggression from con- and heterospecifics
<p>Balancing selection is important for the maintenance of polymorphism as it can prevent either fixation of one morph through directional selection or genetic drift, or speciation by disruptive selection. Polychromatism, the presence of multiple genetically determined colour phenotypes, can be maintained if the fitness of alternative morphs depends on the relative frequency in a population. In aggressive species, negative frequency-dependent antagonism can prevent an increase in the frequency of rare morphs as they would only benefit from increased fitness while they are rare. Heterospecific aggression is common in nature and has the potential to contribute to rare morph advantage. Here we carry out field observations and laboratory aggression experiments with mbuna cichlids from Lake Malawi, to investigate the role of con- and heterospecific aggression in the maintenance of polychromatism and identify benefits to rare morphs which are likely to result from reduced aggression. We hypothesise that rare morph individuals receive less aggression than common morph individuals and therefore have an ecological advantage. Within species we found that males and females bias aggression towards their own morph, adding to the evidence that inherent own-morph aggression biases can contribute to balancing selection. Over-representation of rare morph territory owners may be influenced by two factors; higher tolerance of different morph individuals as neighbours, and ability of rare morphs to spend more time feeding. Reduced aggression to rare morph individuals by heterospecifics may also contribute to rare morph advantage.</p>
FIGURE 4. a in A new species of Lethrinops (Cichliformes: Cichlidae) from a Lake Malawi satellite lake, believed to be extinct in the wild
FIGURE 4. a. Lower pharyngeal bones of Lethrinops lethrinus, 128mm SL, BMNH 2023.1.11.49-50 (left); Lethrinops lethrinus 84mm SL (unregistered, bottom right); Lethrinops chilingali 69mmSL (unregistered, top right); b. Distribution of Lethrinops lethrinus specimens examined (●), unconfirmed records: juveniles or not examined (Q) and Lethrinops chilingali (●).
FIGURE 2. Lethrinops chilingali. a. Holotype, BMNH 2023.1.11.1 in A new species of Lethrinops (Cichliformes: Cichlidae) from a Lake Malawi satellite lake, believed to be extinct in the wild
FIGURE 2. Lethrinops chilingali. a. Holotype, BMNH 2023.1.11.1; female 70.9mm SL. b. Paratype, BMNH 2023.1.11.2-21; mature male, 81.2mm SL.
FIGURE 3 in A new species of Lethrinops (Cichliformes: Cichlidae) from a Lake Malawi satellite lake, believed to be extinct in the wild
FIGURE 3. Comparisons of Lethrinops lethrinus and Lethinops chilingali. a. holotype of L. lethrinus, BMNH 1893.15.15., 118.5mm SL. b. paratype of L. chilingali, BMNH 2023.1.11.2-21, female, 60.7mm SL; c. L. lethrinus apparent female alive in aquarium. d. L. chilingali apparent immature male alive in aquarium. e. mature male L. lethrinus. f. mature male L. chilingali. The shorter snout L. chilingali is evident, and the more broken midlateral stripe can be seen in the live specimens.
Rare morph Lake Malawi mbuna cihclids benefit from reduced aggression from con- and heterospecifics
Open the record for dataset details and reuse information.
Data from: Genetic analyses in Lake Malawi cichlids identify new roles for Fgf signaling in scale shape variation
Open the record for dataset details and reuse information.
Data from: Evolution of body shape in differently colored sympatric congeners and allopatric populations of Lake Malawi’s rock-dwelling cichlids
Open the record for dataset details and reuse information.
Data from: A genetic demographic analysis of Lake Malawi rock-dwelling cichlids using spatio-temporal sampling
Open the record for dataset details and reuse information.
Data from: Pleiotropic jaw morphology links the evolution of mechanical modularity and functional feeding convergence in Lake Malawi Cichlids
Open the record for dataset details and reuse information.
Data from: Quantitative genetic analyses of male color pattern and female mate choice in a pair of cichlid fishes of Lake Malawi, East Africa
Open the record for dataset details and reuse information.
Data from: Morphological stasis in an ongoing gastropod radiation from Lake Malawi
Open the record for dataset details and reuse information.
ScienceDex guides
Understand access before you commit
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.