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46 results for “trap nests”
FIGURE 3 in Trap-nesting bees and wasps (Hymenoptera, Aculeata) in a Semidecidual Seasonal Forest fragment, southern Brazil
FIGURE 3: Phenology of most common trap-nesting Aculeata in Parque Estadual São Camilo (Palotina, Paraná), (A) from September 2014 to March 2014, (B) from October 2014 to March 2015.
FIGURE 2 in Trap-nesting bees and wasps (Hymenoptera, Aculeata) in a Semidecidual Seasonal Forest fragment, southern Brazil
FIGURE 2: Trap nests in Parque Estadual São Camilo (Palotina, Paraná), (A) Centris analis, (B) Megachile susurrans, (C) Monobia angulosa, (D) Pachodynerus grandis, (E) Pachodynerus guadulpensis, (F) Zethus smithii. Scale bars: 1 cm.
Figures 2-4 in Biology of a trap-nesting wasp of one species the ground-nesting Liris (Hymenoptera: Crabronidae) from the Atlantic Forest of southern Brazil
Figures 2-4. (2) 0.7 cm diameter trap-nest showing nest structures: closure plug (cp) and brood cell with cocoon (bc); (3) adult female; (4) cocoon. Scale bars: 2= 10 mm, 3-4 = 1 mm.
Linked collectors and determiners for: Insect Specimens from Trap Nests deployed in Vermont, USA.
Natural history specimen data linked to collectors and determiners held within, "Insect Specimens from Trap Nests deployed in Vermont, USA". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/b34cd86f-6b46-48cb-9cc1-de4a2c5718e9">https://bionomia.net/dataset/b34cd86f-6b46-48cb-9cc1-de4a2c5718e9</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/b34cd86f-6b46-48cb-9cc1-de4a2c5718e9">https://gbif.org/dataset/b34cd86f-6b46-48cb-9cc1-de4a2c5718e9</a>. Formatted as a Frictionless Data package.
Data from: Metabarcoding of trap nests reveals differential impact of urbanization on cavity-nesting bee and wasp communities
<p><span>Urbanization is affecting arthropod communities worldwide, for example by changing the availability of food resources. However, the strength and direction of a community's response are species-specific and depend on the species' trophic level. Here, we investigated interacting species at different trophic levels in nests of cavity-nesting bees and wasps along two urbanization gradients in four German cities using trap nests. We analyzed bee and wasp diversity and their trophic interaction partners by metabarcoding the DNA of bee pollen and preyed arthropods found in wasp nests. We found that the pollen richness increased with increasing distance from city centers and at sites characterized by a high percentage of impervious and developed surfaces, while the richness of pollinators was unaffected by urbanization. In contrast, species richness of wasps, but not their arthropod prey, was highest at sites with low levels of urbanization. However, the community structure of wasp prey changed with urbanization at both local and regional scales. Throughout the study area, the community of wasps consisted of specialists, while bee species were generalists. Our results suggest that Hymenoptera and their food resources are negatively affected by increasing urbanization. However, to understand the distribution patterns of both, wasps and bees in urban settings other factors besides food availability should be considered.</span></p>
Data from: Metabarcoding of trap nests reveals differential impact of urbanization on cavity-nesting bee and wasp communities
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Figure 5. Jackknife 1 in Unveiling the trap-nesting bees and wasps' fauna (Hymenoptera: Apocrita) and associated organisms of the Jardim Botânico do Rio de Janeiro, Brazil
Figure 5. Jackknife 1 and ACE estimators showing that the estimated species number is higher than the real sampled species in the Jardim Botânico do Rio de Janeiro.
Figure 2 in Unveiling the trap-nesting bees and wasps' fauna (Hymenoptera: Apocrita) and associated organisms of the Jardim Botânico do Rio de Janeiro, Brazil
Figure 2. Climatic parameters measured in the Jardim Botânico do Rio de Janeiro – Brazil, between April/2017 and February/2019. (A) Mean temperature by months sampled; (B) Mean rainfall by months sampled.
Figure 6 in Unveiling the trap-nesting bees and wasps' fauna (Hymenoptera: Apocrita) and associated organisms of the Jardim Botânico do Rio de Janeiro, Brazil
Figure 6. Ranking-abundance graph plotting the species collected and their relative abundance. The long "tail" in this graph shows that the species assemblage is composed by many rare species.
Figure 3 in Unveiling the trap-nesting bees and wasps' fauna (Hymenoptera: Apocrita) and associated organisms of the Jardim Botânico do Rio de Janeiro, Brazil
Figure 3. Sampling units set in the field. (A) Sample unit with bamboo canes and rubber hose traps in supports made of plastic bottle. (B) Trap-nests made of plastic straws placed in wood support.
Figure 1 in Unveiling the trap-nesting bees and wasps' fauna (Hymenoptera: Apocrita) and associated organisms of the Jardim Botânico do Rio de Janeiro, Brazil
Figure 1. The locality of the Jardim Botânico do Rio de Janeiro on the left. The trap nests' disposition in the field area on the right.
FIGURE 1 in Trap-nesting bees and wasps (Hymenoptera, Aculeata) in a Semidecidual Seasonal Forest fragment, southern Brazil
FIGURE 1: Trap nests installed on Parque Estadual São Camilo.
Figure 1. A in What do we know about Neotropical trap-nesting bees? Synopsis about their nest biology and taxonomy
Figure 1. A generalized bee trap-nest architecture. At the left is the first cell made. The dark grey indicates food objects for the larvae (white). On the right is the last cell built with presence of a vestibular cell being variable.
Detecting ecological traps in human-altered landscapes: A case study of the thick-billed longspur nesting in croplands
<p>Conversion of the North American prairies to cropland remains a prominent threat to grassland bird populations. Yet, a few species nest in these vastly modified systems. The thick-billed longspur (<em>Rhynchophanes mccownii</em>) is an obligate grassland bird whose populations have declined 4% annually during the past 50 years. Thick-billed longspurs historically nested in recently disturbed or sparsely vegetated patches within native mixed-grass prairie, but observations of longspurs in spring cereal and pulse crop fields during the breeding season in northeastern Montana, USA suggest such fields also provide cues for habitat selection. Maladaptive selection for poor-quality habitat may contribute to ongoing declines in longspur populations, but information on thick-billed longspur breeding ecology in crop fields is lacking. We hypothesized that these crop fields may function as ecological traps; specifically, we expected that crop fields may provide cues for territory selection, but frequent human disturbance and increased exposure to weather and predators would have negative consequences for reproduction. To address this hypothesis, we compared measures of habitat selection (settlement patterns and trends in abundance) and productivity (nest density, nest survival, and number of young fledged) between crop fields and native grassland sites during 2020–21. Across both years, settlement patterns were similar between site types and occupancy ranged from 0.52 ± 0.17SE to 0.99 ± 0.01 on April 7 and 30, respectively. Early season abundance differed by year, and changes in abundance during the breeding season appeared to be associated with precipitation-driven vegetation conditions rather than habitat type. While an index of nest density was lower in crop than native sites, the number of young fledged per successful nest (2.9 ± 0.18SE) and nest survival (0.24 ± 0.03 SE; n=222 nests) were similar for crop and native sites. Collectively, the data did not support our ecological trap hypothesis: longspurs did not exhibit a clear preference for crop sites and reproductive output was not significantly reduced. Our results indicate that croplands may provide alternative breeding habitat within a human-dominated landscape.</p>
Camera traps: A novel method to estimate numbers of nesting sea turtles
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Detecting ecological traps in human-altered landscapes: A case study of the thick-billed longspur nesting in croplands
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Heterogeneous agroecosystems support high diversity and abundance of trap nesting bees and wasps amongst tropical crops
<p>Land-use intensification for agricultural purposes modifies the structure of natural environments in various ways and at different spatial scales. These modifications can affect ecological processes and the community structure of multi-environment users such as solitary bees and wasps. Understanding the role of distinct habitat descriptors in promoting such changes is one of the major challenges of empirical studies. In this study, we use a multi-scale approach to evaluate how landscape compositional and configurational heterogeneity, vegetation structural complexity, and the proportion of agricultural landscape composition affect communities of bees and wasps that nest in pre-existing cavities in remnants of native vegetation bordering agroecosystems. We selected 25 sampling points along a gradient of amount of surrounding agriculture and landscape diversity within natural physiognomies located in Chapada Diamantina, Bahia, Brazil. Through model selection using Akaike's information criterion, we verified the complementary roles of landscape heterogeneity and local vegetation in structuring these hymenopteran communities. Abundance in the groups showed different tendencies depending on the descriptors employed, pointing to the importance of evaluating within-group specificity. Furthermore, bees and wasps presented differential responses to landscape composition, but they did not differ in relation to configurational complexity. In more heterogeneous landscapes or sites with more complex local vegetation, the proportion of agriculture had a positive influence on the response evaluated. Efficient management of agricultural landscapes therefore requires increased landscape heterogeneity and conservation or restoration of native vegetation remnants at the local scale.</p>
Data from: Trap nests for bees and wasps to analyse trophic interactions in changing environments - a systematic overview and user guide
1. Trap nests are artificially made nesting resources for solitary cavity-nesting bees and wasps and allow easy quantification of multiple trophic interactions between bees, wasps, their food objects and natural enemies. 2. We synthesized all trap nest studies available in the ISI Web of Science™ to provide a comprehensive overview of trap nest research and identify common practical challenges and promising future research directions. 3. Trap nests have been used on all continents and across climate zones and publication numbers have increased exponentially since the first studies in the 1950s. Originally used for detailed exploratory natural history observations, trap nests are now also an established method in hypothesis-driven ecology and to assess environmental changes. We identify the potential of trap nests for environmental monitoring by assessing trophic interaction networks of the groups involved. While pollen collection by bees or prey hunting by wasps has often been addressed, and interactions with natural enemies were included in almost half of all publications, surprisingly few studies have quantified trophic interaction networks in response to natural and anthropogenic environmental changes. 4. By simultaneously revealing a multitude of trophic interactions, trap nests have the potential to broaden our understanding how species interaction networks are influenced by manifold environmental changes, which are pressing topics in ecological research. To foster the use of trap nests in future studies, we identify common challenges and offer guidance on practical solutions.
Supplementary material 5 from: Ribeiro-Silva L, Perrella DF, Biagolini-Jr CH, Zima PVQ, Piratelli AJ, Schlindwein MN, Galetti-Jr PM, Francisco MR (2018) Use of camera traps for detecting nest predation of birds in the Atlantic Forest of Brazil. Zoologia 35: 1-8. https://doi.org/10.3897/zoologia.35.e14678
Video of a nest of the Gray-hooded Flycatcher, Mionectes rufiventris, containing two nestlings, being depredated by Three-striped Short-tailed Opossum, Monodelphis americana. Note that the small mammal has climbed the closed nest, found its entrance, and has invaded the interior of the nest. :
Supplementary material 4 from: Ribeiro-Silva L, Perrella DF, Biagolini-Jr CH, Zima PVQ, Piratelli AJ, Schlindwein MN, Galetti-Jr PM, Francisco MR (2018) Use of camera traps for detecting nest predation of birds in the Atlantic Forest of Brazil. Zoologia 35: 1-8. https://doi.org/10.3897/zoologia.35.e14678
Video of an Ocelot, Leopardus pardalis, depredating a nest of Gray-hooded Flycatcher, Mionectes rufiventris. The video shows the moment in which a nestling try to leave the nest and is captured in the air by the Ocelot. :
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