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23 results for “oviposition behavior”
Figure 1 in Thanatosis behavior during oviposition in Tropidurus itambere Rodrigues, 1987
Figure 1. Specimen of Tropidurus itambere (A) and (B) performing of Thanatosis during oviposition. Collected at Parque Municipal do Bacaba, Nova Xavantina, Mato Grosso state, Brazil.
Fig. 3 in Does prior feeding behavior by previous generations of the maize weevil (Coleoptera: Curculionidae) determine future descendants feeding preference and ovipositional suitability?
Fig. 3. Mean (SE) number of S. zeamais (n = 8,000) attracted to corn, barley, brown rice, and white rice, with a 200 µL Eppendorf tube containing the pheromone lure placed in barley. Means with the same letter are not significantly different.
Fig. 6 in Does prior feeding behavior by previous generations of the maize weevil (Coleoptera: Curculionidae) determine future descendants feeding preference and ovipositional suitability?
Fig. 6. Number (SE) of S. zeamais male and female (n = 200) emergence when reared on the individual host grains: corn, barley, brown rice, and white rice. Means with the same letter are not significantly different.
Fig. 5 in Does prior feeding behavior by previous generations of the maize weevil (Coleoptera: Curculionidae) determine future descendants feeding preference and ovipositional suitability?
Fig. 5. Mean (SE) number of S. zeamais (n = 8,000) attracted to corn, barley, brown rice, and white rice, with a 200 µL Eppendorf tube containing the pheromone lure placed in brown rice. Means with the same letter are not significantly different.
Fig. 2 in Does prior feeding behavior by previous generations of the maize weevil (Coleoptera: Curculionidae) determine future descendants feeding preference and ovipositional suitability?
Fig. 2. Mean (SE) number of S. zeamais (n = 8,000) attracted to corn, barley, brown rice, and white rice, with a 200 µL Eppendorf tube containing the pheromone lure placed in corn. Weevils were reared on corn, barley, brown rice, and white rice, then presented with a choice of 4 host grains. Means with the same letter are not significantly different.
Fig. 1 in Does prior feeding behavior by previous generations of the maize weevil (Coleoptera: Curculionidae) determine future descendants feeding preference and ovipositional suitability?
Fig. 1. Mean (SE) number of S. zeamais (n = 8,000) attracted to corn, barley, brown rice, and white rice. Weevils were reared on corn, barley, brown rice, and white rice, then presented with a choice of 4 host grains. Means with the same letter are not significantly different.
Fig. 4 in Does prior feeding behavior by previous generations of the maize weevil (Coleoptera: Curculionidae) determine future descendants feeding preference and ovipositional suitability?
Fig. 4. Mean (SE) number of S. zeamais (n = 8,000) attracted to corn, barley, brown rice, and white rice, with a 200 µL Eppendorf tube containing the pheromone lure placed in white rice. Means with the same letter are not significantly different.
Figure 2. A in Oviposition behavior and host records for the parasitic midge Trichochilus lacteipennis (Johannsen) (Chironomidae: Orthocladiinae)
Figure 2. A female Trichochilus lacteipennis with egg string fully extruded, as it descended toward the water surface just prior to releasing the eggs.
Figure 3. A in Oviposition behavior and host records for the parasitic midge Trichochilus lacteipennis (Johannsen) (Chironomidae: Orthocladiinae)
Figure 3. A string of Trichochilus lacteipennis eggs suspended in water near the bottom of a glass rearing vessel.
Figure 1 in Oviposition behavior and host records for the parasitic midge Trichochilus lacteipennis (Johannsen) (Chironomidae: Orthocladiinae)
Figure 1. Two adult female Trichochilus lacteipennis hovering over Lake Umbagog, in the process of extruding strings of eggs.
Figure 4 in Oviposition behavior and host records for the parasitic midge Trichochilus lacteipennis (Johannsen) (Chironomidae: Orthocladiinae)
Figure 4. Four Trichochilus lacteipennis pupae revealed by incision of the outer lamella (marsupium) of the right gill of an Elliptio complanata.
Quantifying species traits related to oviposition behavior and offspring survival in two important disease vectors
<p>Animals with complex life cycles have traits related to oviposition and juvenile survival that can respond to environmental factors in similar or dissimilar ways. We examined the preference-performance hypothesis (PPH), which states that females lacking parental care select juvenile habitats that maximize fitness, for two ubiquitous mosquito species, <i>Aedes albopictus</i> and <i>Culex quinquefasciatus</i>. Specifically, we examined if environmental factors known to affect larval abundance patterns in the field played a role in the PPH for these species. We first identified important environmental factors from a field survey that predicted larvae across different spatial scales. We then performed two experiments, the first testing the independent responses of oviposition and larval survival to these environmental factors, followed by a combined experiment where initial oviposition decisions were allowed to affect larval life history measures. We used path analysis for this last experiment to determine important links among factors in explaining egg numbers, larval mass, development time, and survival. For separate trials, <i>Aedes albopictus</i> displayed congruence between oviposition and larval survival, however <i>C. quinquefasciatus</i> did not. For the combined experiment path analysis suggested neither species completely fit predictions of the PPH, with density dependent effects of initial egg number on juvenile performance in <i>A. albopictus</i>. For these species the consequences of female oviposition choices on larval performance do not appear to fit expectations of the PPH. </p>
Figure 8. - Pollination and oviposition behavior of the Japanese Epicephala species. A Epicephalaanthophilia female actively depositing pollen on Glochidionacuminatum female flower B Epicephalaanthophilia ovipositing through stylar pit of Glochidionacuminatum flower C Epicephalabipollenella ovipositing through stylar pit of Glochidionzeylanicum flower D Epicephalalanceolatella ovipositing through stylar pit of Glochidionlanceolatum flower E Epicephalaperplexa ovipositing through lateral ovary wall of Glochidionlanceolatum flower F Epicephalaobovatella ovipositing through lateral ovary wall of Glochidionobovatum flower G Epicephalacorruptrix ovipositing through ovary wall of Glochidionrubrum flower H Epicephalavitisidaea ovipositing in the interspace between ovary and tepal I Epicephalaparasitica ovipositing in young fruit of Phyllanthuslepidocarpus.
Figure 8. - Pollination and oviposition behavior of the Japanese Epicephala species. A Epicephalaanthophilia female actively depositing pollen on Glochidionacuminatum female flower B Epicephalaanthophilia ovipositing through stylar pit of Glochidionacuminatum flower C Epicephalabipollenella ovipositing through stylar pit of Glochidionzeylanicum flower D Epicephalalanceolatella ovipositing through stylar pit of Glochidionlanceolatum flower E Epicephalaperplexa ovipositing through lateral ovary wall of Glochidionlanceolatum flower F Epicephalaobovatella ovipositing through lateral ovary wall of Glochidionobovatum flower G Epicephalacorruptrix ovipositing through ovary wall of Glochidionrubrum flower H Epicephalavitisidaea ovipositing in the interspace between ovary and tepal I Epicephalaparasitica ovipositing in young fruit of Phyllanthuslepidocarpus.
Data from: Flexible oviposition behavior enabled the evolution of terrestrial reproduction
<p>In vertebrates, nearly all oviparous animals are considered to have either obligate aquatic or terrestrial oviposition, with eggs that are specialized for developing in those environments. The terrestrial environment has considerably more oxygen but is dry and thus presents both opportunities and challenges for developing embryos, particularly those adapted for aquatic development. Here, we present evidence from field experiments examining egg-laying behavior, egg size and egg jelly function of 13 species of Central and South American treefrogs in the genus <em>Dendropsophus, </em>which demonstrates that flexible oviposition (individuals laying eggs both in and out of water) and eggs capable of both aquatic and terrestrial development are the likely factors which enable the transition from aquatic to terrestrial reproduction. Nearly half of the species we studied had previously undescribed degrees of flexible oviposition. Species with obligate terrestrial reproduction have larger eggs than species with aquatic reproduction, and species with flexible reproduction have eggs of intermediate sizes. Obligate terrestrial breeding frogs also have egg masses that absorb water more quickly than those with flexible oviposition. We also examined eight populations of a single species, <em>Dendropsophus ebraccatus</em>, and document substantial intraspecific variation in terrestrial oviposition; populations in rainy, stable climates lay fewer eggs in water than those in drier areas. However, no differences in egg size were found, supporting the idea that the behavioral component of oviposition evolves before other adaptations associated with obligate terrestrial reproduction. Collectively, these data demonstrate the key role that behavior can have in facilitating major evolutionary transitions.</p>
Quantifying species traits related to oviposition behavior and offspring survival in two important disease vectors
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Data from: Flexible oviposition behavior enabled the evolution of terrestrial reproduction
Open the record for dataset details and reuse information.
Figs. 1–2. 1 in Observations of Oviposition Behavior Among North American Tiger Beetle (Coleoptera: Carabidae: Cicindelinae) Species and Notes on Mass Rearing
Figs. 1–2. 1) Female Cicindela ohlone ovipositing. Note the abdomen is partially inserted into soil. Photo by Kevin Fielding; 2) Oviposition holes made by C. ohlone. Note the bits of loose soil around the holes. Photo by C. Barry Knisley.
FIGURE 3 in Redescription and oviposition behavior of an orb-weaver spider parasitoid Hymenoepimecis cameroni Townes, 1966 (Hymenoptera: Ichneumonidae)
FIGURE 3. Hymenoepimecis cameroni Townes, ♀. (A) habitus; (B) head, dorsal view; (C) face, frontal view; (D) head and pronotum, lateral view.
FIGURE 1 in Redescription and oviposition behavior of an orb-weaver spider parasitoid Hymenoepimecis cameroni Townes, 1966 (Hymenoptera: Ichneumonidae)
FIGURE 1. Oviposition behavior of Hymenoepimecis cameroni. (A–B) Female of H. cameroni grasping the juvenile L. volupis abdomen with its legs and stinging the spider with ovipositor between the first and second pairs of legs; (C) Female wasp touching the abdomen of a spider with the base of its ovipositor; (D) A single egg (arrow) on the base of the spider's abdomen; (E) Female wasp performing a self-cleaning of antennae and wings; (F–G) Female wasp hanging by posterior legs on the web hub, waiting for the L. volupis spider to return to the web.
FIGURE 2 in Redescription and oviposition behavior of an orb-weaver spider parasitoid Hymenoepimecis cameroni Townes, 1966 (Hymenoptera: Ichneumonidae)
FIGURE 2. Hymenoepimecis cameroni Townes, ♂. (A) habitus (holotype); (B) face, frontal view; (C) wings, lateral view; (D) habitus, dorsal view (holotype); (E) head, dorsal view; (F) sternite I, lateral view; (G) mesosoma, lateral view, arrow pointing to epicnemial carina; (H) cocoon ♂; (I) sternite IX, dorsal view. Scale bar, 0.2 mm; (J) genital capsule, lateral view. Scale bar, 0.2 mm; (K) genital capsule, ventral view. Scale bar, 0.2 mm.
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