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6 results for “Lestes sponsa”
Subgenus Lestes (15-28). L. sponsa: 15. Left side of head of ♂ showing ridge behind antennal cavity; 16. pterostigma of right forewing; 17-18. anal appendages dorsally and from left; 19. prophallus; 20. terminal segments and ovipositor sheath and vulvar scale at its base (all Germany except prophallus from Japan). L. barbarus (Morocco): 21. right anal appendages from above; 22. prophallus. L. dryas (California): 23. anal appendages dorsally, 24. prophallus. L. macrostigma (Turkey): 25, 26. the same. L. virens (Germany): 27, 28. the same. f = flange, hd = hood, li = ligula, sc = scoop, sh = shelf. in A revision of African Lestidae (Odonata) (excerpt)
Subgenus Lestes (15-28). L. sponsa: 15. Left side of head of ♂ showing ridge behind antennal cavity; 16. pterostigma of right forewing; 17-18. anal appendages dorsally and from left; 19. prophallus; 20. terminal segments and ovipositor sheath and vulvar scale at its base (all Germany except prophallus from Japan). L. barbarus (Morocco): 21. right anal appendages from above; 22. prophallus. L. dryas (California): 23. anal appendages dorsally, 24. prophallus. L. macrostigma (Turkey): 25, 26. the same. L. virens (Germany): 27, 28. the same. f = flange, hd = hood, li = ligula, sc = scoop, sh = shelf.
Venation. Forewings of 1. Lestes sponsa; 2. L. amicus; 3. L. auripennis; 4. L. plagiatus; 5. L. ictericus; 6. L. palliaus; 7. L, ochraceus; 8. Sytnpecma fusca. in A revision of African Lestidae (Odonata) (excerpt)
Venation. Forewings of 1. Lestes sponsa; 2. L. amicus; 3. L. auripennis; 4. L. plagiatus; 5. L. ictericus; 6. L. palliaus; 7. L, ochraceus; 8. Sytnpecma fusca.
Experimental data on time constraint, predator, and pollutant stress effects across life stages in the damselfly <em>Lestes sponsa</em>
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High variation in last male sperm precedence and genital morphology in the emerald damselfly Lestes sponsa
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Life history and morphological traits of Lestes sponsa
<p class="Body">Phenotypic plasticity can either hinder or promote adaptation to novel environments. Recent studies that have quantified alignments between plasticity, genetic variation and divergence propose that such alignments may reflect constraints that bias future evolutionary trajectories. Here, we emphasize that such alignments may themselves be a result of natural selection and do not necessarily indicate constraints on adaptation. We estimated developmental plasticity and broad sense genetic covariance matrices (<b>G</b>) among damselfly populations situated along a latitudinal gradient in Europe. Damselflies were reared at photoperiod treatments that simulated the seasonal time constraints experienced at northern (strong constraints) and southern (relaxed constraints) latitudes. This allowed us to partition the effects of (1) latitude, (2) photoperiod and (3) environmental novelty on <b>G</b> and its putative alignment with adaptive plasticity and divergence. Environmental novelty and latitude did not affect <b>G,</b> but photoperiod did. Photoperiod increased evolvability in the direction of observed adaptive divergence and developmental plasticity when <b>G</b> was assessed under strong seasonal time constraints at northern (relative to southern) photoperiod. Since selection and adaptation under time constraints is well understood in <i>Lestes</i> damselflies, our results suggest that natural selection can shape the alignment between divergence, plasticity and evolvability.</p>
Life history and morphological traits of Lestes sponsa
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