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188 results for “reproductive strategies”
FIGURE 18 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 18. Maximum Likelihood phylogeny of mitochondrial ND4 sequences for the main radiation of Melanesian Litoria including the five new species described in this paper (taxon labels in bold), estimated using IQTree. Node support values (bootstrap proportions) below 70 are not provided. Branches leading to taxa known to exhibit arboreal breeding are highlighted in red.
FIGURE 17 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 17. Breeding habitat, eggs and juveniles of Litoria naispela sp. nov., A) treehole approximately 1 m above the ground in lower montane rainforest near Herowana Village, Papua New Guinea, B) the same treehole, showing eggs glued under 'lip' (top left of photograph) of opening and free swimming tadpoles inside, C) close up of egg mass shown in B), illustrating eggs at different stages of development, D) a recently metamorphosed froglet (SAMA R71597) raised from a tadpole that was collected from this treehole, E) a juvenile frog (SAMA R71595) raised from a tadpole collected from this treehole. Photos by S. Richards.
FIGURE 16 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 16. Litoria naispela sp. nov. holotype (SAMA R70216), A) dorsal and B) lateral view of head (scale bars = 5 mm), C) palmar view of hand, D) plantar view of foot (scale bars = 1 mm).
FIGURE 15 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 15. Litoria naispela sp. nov. and Litoria singadanae in life. A) holotype of Litoria naispela sp. nov. (SAMA R70216), B–C paratype of Litoria naispela sp. nov. (SAMA R70214), B) hidden surfaces of thighs, C) ventral surfaces of abdomen and legs, D) Litoria singadanae (SAMA R60171) in life, E) Litoria singadanae (UP9968) showing ventral colour in life. Photos by S. Richards.
FIGURE 14 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 14. Lower montane forest on limestone substrate at Iagifu Ridge, Papua New Guinea. Males of Litoria lisae sp. nov. called from low foliage in the forest along the trail illustrated A), and from deep within crevices and sinkholes in the karst, such as the large crevice indicated in B). Photos by S. Richards.
FIGURE 11 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 11. Litoria lisae sp. nov. in life, A) holotype (SAMA R71689), B–C), paratype SAMA R71690 in dorsolateral and ventral views. Photos by S. Richards.
FIGURE 2 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 2. Litoria daraiensis sp. nov. in life, A) holotype (SAMA R71675), B) paratype (SAMA R71676). Photos by S. Richards
FIGURE 9 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 9. Litoria haematogaster sp. nov. holotype (SAMA R71702) in life, A) lateral and B) ventral views. Photos by S. Richards.
FIGURE 13 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 13. Wave form (amplitude over time; top) and spectrogram (frequency over time; bottom) of two types of advertisement call produced by Litoria lisae sp. nov. (SAMA R71689) recorded at an air temperature of 20.5°C. Note distinctly clumped nature of pulses in chirp call (left) compared to buzz call (right).
FIGURE 3 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 3. Wave form (amplitude over time; top) and spectrogram (frequency over time; bottom) of an advertisement call of Litoria daraiensis sp. nov. (SAMA R71676) recorded at an air temperature of 22.6°C, containing 11 distinctly pulsed notes.
FIGURE 6 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 6. Litoria gracilis sp. nov., A–C) adult male paratypes in life, lateral view: A) SAMA R71680, B) SAMA R71678, C) SAMA R71679; D) ventral view of SAMA R71679, E) early-stage embryos of Litoria gracilis sp. nov. hanging under leaf, F) later-stage tadpoles glued to leaf about 1.5 m above small seepage. Photos by S. Richards.
FIGURE 1 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 1. Litoria daraiensis sp. nov. holotype (SAMA R71675), A) dorsal and B) lateral view of head (scale bars = 5 mm), C) palmar view of hand, D) plantar view of foot (scale bars = 1 mm).
FIGURE 4 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 4. Map showing the distributions of Litoria species newly described species in this paper, and Litoria singadanae from the Huon Peninsula, Papua New Guniea. Blue square = Litoria daraiensis sp. nov., yellow triangle = Litoria gracilis sp. nov., red circle = Litoria haematogaster sp. nov., pale blue circles = Litoria lisae sp. nov., pink diamond = Litoria naispela sp. nov. and purple diamond = Litoria singadanae. Arrows indicate the type localities for Litoria gracilis sp. nov. and Litoria lisae sp. nov..
FIGURE 7 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 7. Wave form (amplitude over time; top) and spectrogram (frequency over time; bottom) of an advertisement call of Litoria gracilis sp. nov. (SAMA R71680) recorded at an air temperature of 21.2°C, containing 4 distinctly pulsed notes.
FIGURE 10 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 10. Litoria haematogaster sp. nov. holotype (SAMA R71702), A) dorsal and B) lateral view of head (scale bars = 5 mm), C) palmar view of hand, D) plantar view of foot (scale bars = 1 mm).
FIGURE 12 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 12. Litoria lisae sp. nov. holotype (SAMA R71689), A) dorsal and B) lateral view of head (scale bars = 5 mm), C) palmar view of hand, D) plantar view of foot (scale bars = 1 mm).
FIGURE 5 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 5. Litoria gracilis sp. nov. holotype (SAMA R71697), A) dorsal and B) lateral view of head (scale bars = 5 mm), C) palmar view of hand, D) plantar view of foot (scale bars = 1 mm).
FIGURE 8 in Five new species of the pelodryadid genus Litoria Tschudi from the southern versant of Papua New Guinea's Central Cordillera, with observations on the diversification of reproductive strategies in Melanesian treefrogs
FIGURE 8. Small stream on Iagifu Ridge, Southern Highlands Province, Papua New Guinea, type locality of Litoria gracilis sp. nov. Males called from heights of up to 2 m from leaves adjacent to this stream at night, and several clutches of eggs were found glued to leaves hanging over small stream pools near vocalising males. Photo by S. Richards.
Data for: Reproductive strategies of native plant populations altered by a plant invasion
<p><span>Invasive plant transformers substantially change the abiotic environment of invaded ecosystems and thus habitat</span><span> suitability to resident species. Post-invasion environmental a</span><span>lteration can also modify the selective pressure acting on native plants. Here, I explored whether the decrease in light availability due to an invasion of <em>Heracleum mantegazzianum</em> drives evolution of reproductive strategies of <em>Veronica chamaedrys</em>, a perennial plant combining sexual and clonal reproduction.</span></p> <p><span>Using a common garden experiment with plant material of <em>V. chamaedrys</em> from 23 sites with distinct invasion history and light conditions, I searched for changes in reproductive allocation. I also asked whether evolution of the two modes can be constrained by the genetic trade-off between them. Furthermore, the phenotypic trade-off between the two modes was explored in a field experiment.</span></p> <p><span>I found that invaded populations increased investments in clonal reproduction, a shift that was driven by decreased light availability, particularly in the early invasion phases. However, as light availability rebounded in the more advanced phases of invasion, so decreased allocation to clonal structures. In terms of relative allocation, increased investment in ramets was paralleled by reduced seed production, and the changes were underpinned by genetic trade-off. Finally, the phenotypic trade-off was demonstrated in the field experiment by showing that plants producing more ramets were also less likely to flower.</span></p> <p><span>These results suggest that an exotic plant invasion can drive evolution of reproductive allocation, here observed on a timescale of tens of years. This knowledge is important not only to predict long-term invasion impacts but also, more generally, to provide novel insights into the process of adaptation of plants to changing abiotic conditions. </span></p>
Study Comparing Outcomes Between Conventional IVF and a "Freeze-all"-Strategy in Assisted Reproductive Technology
ClinicalTrials.gov study NCT02746562. IPD Sharing: NO. Countries: 1. Publications: 5.
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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