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20 results for “bat pollination”
Figures 2–7. Cayman Islands Sphingidae. 2 in A checklist of the hawkmoths (Lepidoptera: Sphingidae) of the Cayman Islands: with implications for the pollination of the ghost orchid Dendrophylax fawcettii Rolfe (Orchidaceae: Angraecinae) and consideration of bat predation
Figures 2–7. Cayman Islands Sphingidae. 2) Isognathus rimosa. 3) Erinnyis obscura. 4) Phryxus caicus. 5) Predation of Pachylia ficus larva by Mangrove Cuckoo, Coccyzus minor. 6) Pachylia ficus. 7) Enyo lugubris. Photographic credits: M.C. Rose-Smyth (2, 27.i.2017; 3, 08.viii.2018; 4, 24.xiii.2015, 6, 05.iv.2018; 7, 13.ii.2018), Yves-Jacques Rey-Millet (5, 29.xii.2012).
Figures 8–11. Cayman Islands Sphingidae. 8 in A checklist of the hawkmoths (Lepidoptera: Sphingidae) of the Cayman Islands: with implications for the pollination of the ghost orchid Dendrophylax fawcettii Rolfe (Orchidaceae: Angraecinae) and consideration of bat predation
Figures 8–11. Cayman Islands Sphingidae. 8) Eumorpha vitis. 9) Eumorpha fasciatus. 10) Eumorpha satellitia posticatus. 11) Xylophanes tersa. Photographic credits: Stuart Mailer (8, 12.v.2010), Peter and Norma Davey (9, 10.ii.2018), Gary J. Goss (10, 26.vi.2017), M.C. Rose-Smyth (11, NTCI collection).
Figure 1 in A checklist of the hawkmoths (Lepidoptera: Sphingidae) of the Cayman Islands: with implications for the pollination of the ghost orchid Dendrophylax fawcettii Rolfe (Orchidaceae: Angraecinae) and consideration of bat predation
Figure 1. Collection and observation locations in the Cayman Islands. Little Cayman: 1. Nature Trail; 2. Stonewall Dr., Spyglass Hill; 3. Pirates Point; 4. South Town (Blossom Village); 5. Cross the Land Road (now Guy Banks); 6. Central Forest, south of Sparrowhawk Hill; 7. Coppice Rd. Cayman Brac: A. West End (Cotton Tree Land); B. Stake Bay (Stakes Bay in Jordan 1940); C. Arlin Reid Drive; D. Earthquake Hole; E. Spot Bay; E1. Lighthouse Trail. Grand Cayman: F. West Bay; G. Crystal Harbour; H. George Town (Georgetown in Jordan 1940); I. Ocean Club; J. Newlands; K. North Sound Estates; L. Savannah; M. Agricultural Grounds/Pavilion/Lottery Rd.; N. Valley Gardens; O. Bodden Town; P. High Rock; Q. East End; R. Colliers Wilderness Reserve; S. Queen Elizabeth II Botanic Park; T. Old Man Bay; U. Mastic Trail; V. Hutland (Hut Rd.); W. North Side; X. North Sound, Booby Cay (Booby Bay in Jordan 1940).
Figure 12 in A checklist of the hawkmoths (Lepidoptera: Sphingidae) of the Cayman Islands: with implications for the pollination of the ghost orchid Dendrophylax fawcettii Rolfe (Orchidaceae: Angraecinae) and consideration of bat predation
Figure 12. Tongue lengths of twenty of the twenty-three species of hawkmoth found in Grand Cayman, plus that of Dolba hyloeus. Data from: Miller (1997) supplemented by Haber and Frankie (1989), Houlihan et al. (2019): and Danaher et al. (2019). Species are grouped by "pollinia carriers" and "visitors to flowers" in Florida, according to Houlihan et al. (2019) and Danaher et al. (2019) and "not observed". Colour codes are: red = species not occurring in Grand Cayman; blue = species occurring in Grand Cayman.
The functional ecology of bat pollination in the African sausage tree Kigelia africana (Bignoniaceae)
<p>Plants often interact with a wide range of animal floral visitors that can vary in their pollination effectiveness. Flowers of the African sausage tree Kigelia africana are be visited by bats and bush babies during the night and by birds during the day. We studied floral traits (phenophases, scent, colour and nectar chemistry) and the visitation frequency and pollination effectiveness of different flower visitors to determine if K. africana is functionally specialized for bat-pollination. We found that flower opening corresponds with bat activity, flowers emit scent dominated by aliphatic esters and alcohols, and that nectar is produced in copious amounts accessible to bats. Pollen deposition on stigmas was twenty-fold greater per-visit by bats than it was per-visit by birds, likely a result of the close morphological fit between snouts of bats and the flowers. However, bat visits appear to be rare at some sites and the delayed senescence of flowers that are open throughout the morning provides an opportunity for additional pollination by birds. We conclude that K. africana is primarily adapted for bat pollination, but is also able</p>
Data from: Bat pollination in the Yungas
<p>Bat-plant pollination interactions at the range margin in the southwestern Neotropics have been largely unexplored. Here, we report for the first time on bat pollination, visitation rate, and efficiency for <em>Melidiscus giganteus</em>, <em>Helicteres lhotzkyana</em>, and <em>Pitcairnia oranensis</em>, representing the first direct evidence of bat pollination in the Southern Andean Yungas.</p>
Evolutionary history and precipitation seasonality shape niche overlap in Neotropical bat-plant pollination networks
<p>Species interactions are one dimension of the niche, and niche overlap arises when two species share an interaction partner. In pollination systems, environmental and biotic factors impact the niche overlap. Here we explored the effects of climate seasonality, plant and bat richness, morphological traits, and phylogenetic distance in shaping the niche overlap of Neotropical bat-plant pollination networks. For that, we used a dataset of 22 bat-plant pollination networks in the Neotropical region. We measured niche overlap in bats and plants with the Morisita-Horn index, ĈH, and then, we used a SAR model to test the relationships between niche overlap and the abiotic and biotic factors. We found a lower niche overlap among bats in communities composed of phylogenetically distant bat species. Moreover, plant and bat overlap were lower in regions with higher precipitation seasonality. Our results indicate that climate seasonality and bat evolutionary history drive niche overlap in Neotropical bat-plant pollination interactions. These findings suggest that a higher precipitation seasonality may promote the emergence of temporal modules reducing niche overlap, probably as a consequence of seasonal species phenologies. Furthermore, the method used to record the interactions impacts the degree of niche overlap. Interactions recorded with pollen samples tend to have higher niche overlap than direct observations. The uncoupled responses of morphological traits and phylogenetic distances in bat niche overlap suggest an effect of historical processes independently of the morphological traits. Our study reinforced the importance of evolutionary history and ecological processes in imprinting patterns of interaction niche overlap.</p>
The functional ecology of bat pollination in the African sausage tree Kigelia africana (Bignoniaceae)
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Data from: Bat pollination in the Yungas
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Evolutionary history and precipitation seasonality shape niche overlap in Neotropical bat-plant pollination networks
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Data from: Contributions of bats to the local economy through durian pollination in Sulawesi, Indonesia
Durian is economically important for local livelihoods in Indonesia. Our study investigated the identity of pollinators of semi-wild durian, and subsequently estimated the economic contribution of these pollination services. We conducted pollination exclusion experiments and deployed camera traps at durian trees from October 2017 to January 2018 in an area where the local economy depends on durian production in West Sulawesi, Indonesia. Durian flowers in the experiment that were accessible to bats had significantly higher fruit set compared to flowers that were completely closed to animal visitors or those that could only be visited by insects, suggesting that bats were the primary durian pollinator. The small, highly nectarivorous cave nectar bat (Eonycteris spelaea) visited more inflorescences (n = 25) and had visits of much longer duration (X ̅ = 116.87 sec/visit) than the two species of flying foxes: Pteropus alecto (n = 7 inflorescences visited,X ̅ = 11.07 sec/visit) and Acerodon celebensis (n = 6 inflorescences visited,X ̅ = 11.60 sec/visit). Visits by large and small bats were influential in differentiating successful durian fruit production from unsuccessful. Using a bioeconomic approach, we conservatively estimate that bat pollination services are valued at ~$117/ha/fruiting season. By demonstrating an ecological link between bats and the local economy, this research provides an urgent message for Southeast Asian governments regarding the need to promote bat conservation in order to increase the production of durian grown under semi-wild conditions.
Data from: Flower-visiting bat species contribute unequally toward agricultural pollination ecosystem services in southern Thailand
The large majority of angiosperm species depend on animals for pollination, including many agricultural crops, and plant-pollinator interactions have been extensively studied. However, not all floral visitors actually transfer pollen, and efforts to distinguish true pollinators from mere visitors are particularly scarce among the bat pollination literature. To determine whether Old World bat species are equally effective pollinators in mixed-agricultural areas of southern Thailand, we examined six night-blooming plant taxa and quantified pollinator importance (PI) of seven common nectarivorous bat species. PI was calculated as the product of nightly bat visitation rate (obtained from mist-netting data) and pollen transfer efficiency (estimated from bat pollen loads). We found that PI varied by both bat species and plant species. In general, the nectar-specialist bat species were more important pollinators, yet their order of importance differed across our focal plant species. In addition, PI was dictated more by pollen transfer effectiveness than visitation rate. Our findings highlight the importance of Old World bat pollinators within southern Thailand's mixed-agricultural landscape and illustrate how seemingly similar floral visitors can have very different contributions toward plant pollination success.
Pollination by bats enhances both quality and yield of a major cash crop in Mexico
<ol> <li>We used exclusion experiments to determine the effect of different pollinator taxa on the yield and quality of pitayas (fruit of <i>Stenocereus queretaroensis</i> (F.A.C. Weber) Buxbaum), a major crop in central Mexico. We studied the three most economically important cultivars and wild individuals in the principal region for pitaya production. For each pollinator taxa we recorded fruit set and measured three key parameters of fruit quality: weight, sucrose concentration and seed set.</li> <li>When bats were excluded from flowers and flowers were pollinated by other taxa (i.e. diurnal birds and insects), pitaya yield decreased by 35%, though pollination dependence varied between cultivars. Fruit quality decreased significantly in the absence of bat pollination across all cultivars, with fruits 46% lighter and 13% less sweet when pollinated by other taxa, thus reducing economic value as size determines market price. Additionally, seed set (an indicator of effective pollination) was significantly lower in the absence of bat pollinators.</li> </ol>
Phylogeny and systematics of Crescentieae (Bignoniaceae), a Neotropical clade of cauliflorous and bat-pollinated trees
<p>The tribe Crescentieae includes <i>Amphitecna</i> (21 species), <i>Crescentia </i>(six species), and <i>Parmentiera</i> (10 species), three genera of understory trees with a center of diversity in Central America and a small number of species in the Antilles and northern South America. Species in Crescentieae are united by their fleshy, indehiscent fruit and cauliflorous, bat-pollinated flowers. The large fruits are presumed to have evolved to be mammal dispersed, although water dispersal is known to occur. To lay a foundation for examining morphological, ecological, and biogeographic patterns within the tribe, we inferred the phylogeny for Crescentieae using both chloroplast (<i>ndhF</i>, <i>trnL-F</i>) and nuclear markers (PepC, ITS). The most recent circumscription of Crescentieae, containing <i>Amphitecna</i>, <i>Crescentia</i>, and <i>Parmentiera</i> is supported by our phylogenetic results. Likewise, the sister relationship between Crescentieae and the Antillean-endemic <i>Spirotecoma</i> is also corroborated by our findings. This relationship implies the evolution of fleshy and indehiscent fruits from dry and dehiscent ones, as well as the evolution of bat pollination from insect pollination. Fruits and seeds from species in Crescentieae are consumed by humans, ungulates, birds, and fish.</p>
Phylogeny and systematics of Crescentieae (Bignoniaceae), a Neotropical clade of cauliflorous and bat-pollinated trees
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Data from: Insectivorous bat pollinates columnar cactus more effectively per visit than specialized nectar bat
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Data from: Flower-visiting bat species contribute unequally toward agricultural pollination ecosystem services in southern Thailand
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Pollination by bats enhances both quality and yield of a major cash crop in Mexico
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Data from: Contributions of bats to the local economy through durian pollination in Sulawesi, Indonesia
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Data from: Bimodal pollination systems in Andean Melastomataceae involving birds, bats and rodents
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