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12 results for “large eggs”
Рис. 4. Сезонная Δинамика размеров цист Heterodera glycines и чисΛа яиц в них. Размер цист в баΛΛах: 1 — меΛкие, 2 — среΔние, 3 — крупные Fig. 4. Seasonal dynamics of the size of Heterodera glycines cysts and the number of eggs in them. The size of cysts in classes: 1 — small, 2 — medium, 3 — large in Reproductive potential of Soybean Cyst Nematode Heterodera glycines - quarantine pest of soybean - in Primorsky Region conditions
Рис. 4. Сезонная Δинамика размеров цист Heterodera glycines и чисΛа яиц в них. Размер цист в баΛΛах: 1 — меΛкие, 2 — среΔние, 3 — крупные Fig. 4. Seasonal dynamics of the size of Heterodera glycines cysts and the number of eggs in them. The size of cysts in classes: 1 — small, 2 — medium, 3 — large
Rapid evolution of a brood parasite's egg pattern does not lead to large increases in mimetic fidelity
<p>In coevolutionary mimicry systems, mimics evolve to resemble models. When model fitness is reduced by close mimicry (such as when models are hosts and mimics are brood parasites), selection should drive mimics to evolve greater similarity to models over time, and models to evolve away from mimics ('chase-away evolution'), potentially resulting in mimetic fidelity remaining constant over time. Evidence for reciprocal evolution of models and mimics and its effect on mimetic fidelity is limited, however, likely because long-term data are required to observe such trends. Here, we test for these dynamics in an avian brood parasite system. The brood-parasitic cuckoo finch (Anomalospiza imberbis) lays eggs which mimic those of its host, the tawny-flanked prinia (Prinia subflava). In defence, prinias have evolved complex egg patterns which facilitate recognition of parasitic eggs. Prinia egg patterns are more complex than cuckoo finch egg patterns, and so selection should favour elevated complexity in parasite eggs (i.e. mimics evolving towards models) and even greater complexity in host eggs (i.e. models evolving away from mimics). Using a dataset spanning 50 years, we show that egg pattern complexity has indeed increased in both species over this time period, reflecting rapid adaptive evolution of both models and mimics. Both species have evolved at similar rates. Accordingly, we find no detectible increase in mimetic fidelity over time. Thus, host evolution can counteract even rapid parasite evolution, and result in the persistence of imperfect mimicry.</p>
FIGURE 8. Eulimnadia indocylindrova. SEM photographs. A–D, Egg shape. E, F in First faunal inventory of large branchiopods (Crustacea: Branchiopoda) of Western Maharashtra, India with taxonomical and distributional comments
FIGURE 8. Eulimnadia indocylindrova. SEM photographs. A–D, Egg shape. E, F, Egg surface (Scale bars: 0.05mm).
FIGURE 5 in Large branchiopod (Crustacea: Branchiopoda) egg morphology of Western Ghats, Maharashtra, India
FIGURE 5. Eggs of: A–B, Cyzicus annandalei s. lat.; C–D, Lynceus denticulatus s.lat. Scale bars: A = 50µm; B = 20µm; C = 100µm; D = 20µm.
FIGURE 3 in Large branchiopod (Crustacea: Branchiopoda) egg morphology of Western Ghats, Maharashtra, India
FIGURE 3. Eggs of Streptocephalus sahyadriensis Rogers & Padhye 2014 populations. A–B, Tableland. C, Chalkewadi. D, Mhavshi. Scale bars = 50µm.
FIGURE 4 in Large branchiopod (Crustacea: Branchiopoda) egg morphology of Western Ghats, Maharashtra, India
FIGURE 4. Eggs of: A, Triops granarius; B, Eulimnadia indocylindrova; C, Leptestheria nobilis (female brood pouch with eggs); D, Leptestheria nobilis (single egg SEM). Scale bars: A = 100µm; B = 50µm; C = 500µm; D = 20µm.
FIGURE 1 in Large branchiopod (Crustacea: Branchiopoda) egg morphology of Western Ghats, Maharashtra, India
FIGURE 1. Map showing location of the populations of two Streptocephalus Daday species. (Inset: overview map of India showing the study region and boundary of the Western Ghats which is marked by a thick black line).
FIGURE 2 in Large branchiopod (Crustacea: Branchiopoda) egg morphology of Western Ghats, Maharashtra, India
FIGURE 2. Eggs of Streptocephalus dichotomus (Baird, 1860) populations. A–B, Ramshej. C, Masai. D–E, Sinhagad. F, Visapur. G & H, Dighi. Scale bars: A, H = 100µm; C–G = 50 µm).
Dwarf emu eggs retained large size: Supplementary material
<p>Islands off southern Australia once harboured three subspecies of the mainland emu (Dromaius novaehollandiae), the smaller Tasmanian emu (D. n. diemenensis), and two dwarf emus, King Island emu (D. n. minor) and Kangaroo Island emu (D. n. baudinianus), which all became extinct rapidly after discovery by human settlers. Little was recorded about their life-histories and only a few historical museum specimens exist, including a number of complete eggs from Tasmania and a unique egg from Kangaroo Island. Here we present a detailed analysis of dwarf emu eggs, including a first record of an almost complete specimen from King Island. Our results show that despite the reduction in size of all island emus, especially the King Island emu that averaged 46% smaller than mainland birds, the egg remained virtually the same size and had slightly thinner eggshell, and we provide possible reasons why these phenomena occurred.</p>
Eggs of extinct dwarf island emus retained large-size: Electronic supplementary material
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Dwarf emu eggs retained large size: Supplementary material
Open the record for dataset details and reuse information.
FIGURE 6. Ctenomorpha marginipennis egg views a in Studies on the Australian stick insect genus Ctenomorpha Gray (Phasmida: Phasmatidae: Phasmatinae), with the description of a new large species
FIGURE 6. Ctenomorpha marginipennis egg views a) dorsal b) lateral (scale bar, 2mm).
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)
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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
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.