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https://www.readbyqxmd.com/read/29664191/analyzing-the-sclerocarpy-adaptations-of-the-pitheciidae-mandible
#1
Thomas A Püschel, Jordi Marcé-Nogué, Thomas M Kaiser, Robert J Brocklehurst, William I Sellers
Primates are interpreted to be ancestrally adapted to frugivory, although some modern groups show clear adaptations to other diets. Among them, pitheciids stand out for specifically predating seeds. This dietary specialization is known as sclerocarpy and refers to the extraction of seeds from surrounding hard tissues using the anterior dentition followed by the mastication of seeds by the molars. It has been proposed that Callicebus-Pithecia-Chiropotes-Cacajao represent a morphocline of increasingly specialized anatomical traits for sclerocarpic foraging...
April 17, 2018: American Journal of Primatology
https://www.readbyqxmd.com/read/29659972/acceleration-of-olfactory-receptor-gene-loss-in-primate-evolution-possible-link-to-anatomical-change-in-sensory-systems-and-dietary-transition
#2
Yoshihito Niimura, Atsushi Matsui, Kazushige Touhara
Primates have traditionally been regarded as vision-oriented animals with low olfactory ability, though this "microsmatic primates" view has been challenged recently. To clarify when and how degeneration of the olfactory system occurred and to specify the relevant factors during primate evolution, we here examined the olfactory receptor (OR) genes from 24 phylogenetically and ecologically diverse primate species. The results revealed that strepsirrhines with curved noses had functional OR gene repertoires that were nearly twice as large as those for haplorhines with simple noses...
April 10, 2018: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/29617455/the-ecological-footprint-of-acca-sellowiana-domestication-maintains-the-residual-vertebrate-diversity-in-threatened-highlands-of-atlantic-forest
#3
Juliano André Bogoni, Maurício Eduardo Graipel, Nivaldo Peroni
Past and contemporary human actions are causing numerous changes in patterns and processes at various ecosystem scales and trophic levels, including unintended downstream changes, such as species interactions. In its native range Acca sellowiana (Feijoa) combines some characteristics of human interactions: incipient domestication, restricted to subtropical Atlantic Forest highlands, associated with the threatened conifer Araucaria angustifolia (Araucaria), within a domesticated landscape with anthropogenic forest patches, and provides fruit at a time of resource shortage (Araucaria seeds-pinhão)...
2018: PloS One
https://www.readbyqxmd.com/read/29603211/moving-from-frugivory-to-seed-dispersal-incorporating-the-functional-outcomes-of-interactions-in-plant-frugivore-networks
#4
Benno I Simmons, William J Sutherland, Lynn V Dicks, Jörg Albrecht, Nina Farwig, Daniel García, Pedro Jordano, Juan P González-Varo
1.There is growing interest in understanding the functional outcomes of species interactions in ecological networks. For many mutualistic networks, including pollination and seed dispersal networks, interactions are generally sampled by recording animal foraging visits to plants. However, these visits may not reflect actual pollination or seed dispersal events, despite these typically being the ecological processes of interest. 2.Frugivorous animals can act as seed dispersers, by swallowing entire fruits and dispersing their seeds, or as pulp peckers or seed predators, by pecking fruits to consume pieces of pulp or seeds...
March 30, 2018: Journal of Animal Ecology
https://www.readbyqxmd.com/read/29497835/strong-among-population-variation-in-frugivory-strength-by-functional-diverse-frugivores-a-reciprocal-translocation-experiment
#5
Pedro J Garrote, Gemma Calvo, Magdalena Żywiec, Miguel Delibes, Alberto Suárez-Esteban, José M Fedriani
Fruit-frugivore interactions are critical for the dynamics and evolution of many plant communities. The strength of the interactions between a given plant species and different frugivore guilds (e.g., seed dispersers, seed predators) often vary in space due to changes in plant extrinsic factors (e.g., frugivore abundances) and plant traits (e.g., fruit size and reward). By reciprocally translocating Pyrus bourgaeana ripe fruits representative of five Mediterranean localities during 2 consecutive years, we experimentally quantified guild-specific variations among populations in frugivory strength, while accounted for plant-intrinsic and- extrinsic factors...
March 2, 2018: Oecologia
https://www.readbyqxmd.com/read/29275404/dietary-variation-in-diana-monkeys-cercopithecus-diana-the-effects-of-polyspecific-associations
#6
Erin E Kane, W Scott McGraw
Establishing dietary central tendencies and extremes remains an important goal of primate research. While habitat differences and spatial discontinuity are well-documented contributors to dietary variation, other factors including polyspecific associations may significantly impact diet through changes in strata use and/or increased feeding competition. Here, we examine polyspecific association with closely related species as a source of dietary variation in a rain forest primate. Diana monkeys (Cercopithecus diana) in Côte d'Ivoire's Taï Forest frequently participate in mixed-species groups...
2017: Folia Primatologica; International Journal of Primatology
https://www.readbyqxmd.com/read/29162842/trophic-position-and-dietary-breadth-of-bats-revealed-by-nitrogen-isotopic-composition-of-amino-acids
#7
Caitlin J Campbell, David M Nelson, Nanako O Ogawa, Yoshito Chikaraishi, Naohiko Ohkouchi
Bats perform important ecosystem services, but it remains difficult to quantify their dietary strategies and trophic position (TP) in situ. We conducted measurements of nitrogen isotopes of individual amino acids (δ15 NAA ) and bulk-tissue carbon (δ13 Cbulk ) and nitrogen (δ15 Nbulk ) isotopes for nine bat species from different feeding guilds (nectarivory, frugivory, sanguivory, piscivory, carnivory, and insectivory). Our objective was to assess the precision of δ15 NAA -based estimates of TP relative to other approaches...
November 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29089504/low-levels-of-fruit-nitrogen-as-drivers-for-the-evolution-of-madagascar-s-primate-communities
#8
Giuseppe Donati, Luca Santini, Timothy M Eppley, Summer J Arrigo-Nelson, Michela Balestri, Sue Boinski, An Bollen, LeAndra L Bridgeman, Marco Campera, Valentina Carrai, Mukesh K Chalise, Abigail Derby Lewis, Gottfried Hohmann, Margaret F Kinnaird, Andreas Koenig, Martin Kowalewski, Petra Lahann, Matthew R McLennan, Anna K I Nekaris, Vincent Nijman, Ivan Norscia, Julia Ostner, Sandra Y Polowinsky, Oliver Schülke, Christoph Schwitzer, Pablo R Stevenson, Mauricio G Talebi, Chia Tan, Irene Tomaschewski, Erin R Vogel, Patricia C Wright, Jörg U Ganzhorn
The uneven representation of frugivorous mammals and birds across tropical regions - high in the New World, low in Madagascar and intermediate in Africa and Asia - represents a long-standing enigma in ecology. Several hypotheses have been proposed to explain these differences but the ultimate drivers remain unclear. Here, we tested the hypothesis that fruits in Madagascar contain insufficient nitrogen to meet primate metabolic requirements, thus constraining the evolution of frugivory. We performed a global analysis of nitrogen in fruits consumed by primates, as collated from 79 studies...
October 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29062122/frugivory-related-traits-promote-speciation-of-tropical-palms
#9
Renske E Onstein, William J Baker, Thomas L P Couvreur, Søren Faurby, Jens-Christian Svenning, W Daniel Kissling
Animal-mediated seed dispersal by frugivorous birds and mammals is central to the ecology and functioning of ecosystems, but whether and how frugivory-related traits have affected plant speciation remains little explored. Fruit size is directly linked to plant dispersal capacity and therefore influences gene flow and genetic divergence of plant populations. Using a global species-level phylogeny with comprehensive data on fruit sizes and plant species distributions, we test whether fruit size has affected speciation rates of palms (Arecaceae), a plant family characteristic of tropical rainforests...
October 23, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28910290/bird-use-of-organic-apple-orchards-frugivory-pest-control-and-implications-for-production
#10
Anna M Mangan, Liba Pejchar, Scott J Werner
As the largest terrestrial biomes, crop and pasturelands can have very large positive or negative impacts on biodiversity and human well-being. Understanding how animals use and impact agroecosystems is important for making informed decisions that achieve conservation and production outcomes. Yet, few studies examine the tradeoffs associated with wildlife in agricultural systems. We examined bird use of organic apple orchards as well as how birds influence fruit production positively through control of an economically important insect pest (codling moth (Cydia pomonella)) and negatively through fruit damage...
2017: PloS One
https://www.readbyqxmd.com/read/28812699/primate-brain-size-is-predicted-by-diet-but-not-sociality
#11
Alex R DeCasien, Scott A Williams, James P Higham
The social brain hypothesis posits that social complexity is the primary driver of primate cognitive complexity, and that social pressures ultimately led to the evolution of the large human brain. Although this idea has been supported by studies indicating positive relationships between relative brain and/or neocortex size and group size, reported effects of different social and mating systems are highly conflicting. Here, we use a much larger sample of primates, more recent phylogenies, and updated statistical techniques, to show that brain size is predicted by diet, rather than multiple measures of sociality, after controlling for body size and phylogeny...
March 27, 2017: Nature Ecology & Evolution
https://www.readbyqxmd.com/read/28646036/feeding-on-ripening-and-over-ripening-fruit-interactions-between-sugar-ethanol-and-polyphenol-contents-in-a-tropical-butterfly
#12
Michaël Beaulieu, Kristin Franke, Klaus Fischer
In ripe fruit, energy mostly derives from sugar, while in over-ripe fruit, it also comes from ethanol. Such ripeness differences may alter the fitness benefits associated with frugivory if animals are unable to degrade ethanol when consuming over-ripe fruit. In the tropical butterfly Bicyclus anynana, we found that females consuming isocaloric solutions mimicking ripe (20% sucrose) and over-ripe fruit (10% sucrose, 7% ethanol) of the palm Astrocaryum standleyanum exhibited higher fecundity than females consuming a solution mimicking unripe fruit (10% sucrose)...
June 23, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28415137/drivers-of-species-role-in-avian-seed-dispersal-mutualistic-networks
#13
Esther Sebastián-González
The mutualistic interaction between frugivore birds and the fruiting plants they disperse presents an asymmetric interaction pattern, with some species having a more important role (i.e. being essential) for maintaining the structure and functioning of the interaction network. The identification of the biological characteristics of these species is of major importance for the understanding and conservation of seed-dispersal interactions. In this study, I use a network approach and avian seed-dispersal networks from 23 different geographical areas to test five hypotheses about species characteristics determining the structure of the assemblage...
July 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28317110/atlantic-frugivory-a-plant-frugivore-interaction-data-set-for-the-atlantic-forest
#14
Carolina Bello, Mauro Galetti, Denise Montan, Marco A Pizo, Tatiane C Mariguela, Laurence Culot, Felipe Bufalo, Fabio Labecca, Felipe Pedrosa, Rafaela Constantini, Carine Emer, Wesley R Silva, Fernanda R da Silva, Otso Ovaskainen, Pedro Jordano
The data set provided here includes 8,320 frugivory interactions (records of pairwise interactions between plant and frugivore species) reported for the Atlantic Forest. The data set includes interactions between 331 vertebrate species (232 birds, 90 mammals, 5 fishes, 1 amphibian, and 3 reptiles) and 788 plant species. We also present information on traits directly related to the frugivory process (endozoochory), such as the size of fruits and seeds and the body mass and gape size of frugivores. Data were extracted from 166 published and unpublished sources spanning from 1961 to 2016...
June 2017: Ecology
https://www.readbyqxmd.com/read/27879623/dynamic-duos-jamaican-fruit-bats-artibeus-jamaicensis-do-not-show-prosocial-behavior-in-a-release-paradigm
#15
Eric Hoffmaster, Jennifer Vonk
Once thought to be uniquely human, prosocial behavior has been observed in a number of species, including vampire bats that engage in costly food-sharing. Another social chiropteran, Jamaican fruit bats (Artibeus jamaicensis), have been observed to engage in cooperative mate guarding, and thus might be expected to display prosocial behavior as well. However, frugivory and hematophagy diets may impose different selection pressures on prosocial preferences, given that prosocial preferences may depend upon cognitive abilities selected by different ecological constraints...
November 20, 2016: Behavioral Sciences
https://www.readbyqxmd.com/read/27859154/generalist-birds-promote-tropical-forest-regeneration-and-increase-plant-diversity-via-rare-biased-seed-dispersal
#16
Tomás A Carlo, Juan M Morales
Regenerated forests now compose over half of the world's tropical forest cover and are increasingly important as providers of ecosystem services, freshwater, and biodiversity conservation. Much of the value and functionality of regenerating forests depends on the plant diversity they contain. Tropical forest diversity is strongly shaped by mutualistic interactions between plants and fruit-eating animals (frugivores) that disperse seeds. Here we show how seed dispersal by birds can influence the speed and diversity of early successional forests in Puerto Rico...
July 2016: Ecology
https://www.readbyqxmd.com/read/27550164/frugivory-by-brown-marmorated-stink-bug-hemiptera-pentatomidae-alters-blueberry-fruit-chemistry-and-preference-by-conspecifics
#17
Yucheng Zhou, M Monica Giusti, Joyce Parker, Jordano Salamanca, Cesar Rodriguez-Saona
The brown marmorated stink bug, Halyomorpha halys (Stål), is an invasive pest from Asia that feeds on many agricultural crops in the United States, including blueberries. Yet, the effects of H. halys feeding on fruit chemistry and induced resistance to insects remain unknown. Here we hypothesized that frugivory by H. halys changes fruit chemical composition, which in turn affects insect feeding behavior. In field experiments, blueberry fruit was either mechanically injured or injured by 0 (control), 2, 5, or 10 H...
October 2016: Environmental Entomology
https://www.readbyqxmd.com/read/27542555/primate-dietary-ecology-in-the-context-of-food-mechanical-properties
#18
Susan Coiner-Collier, Robert S Scott, Janine Chalk-Wilayto, Susan M Cheyne, Paul Constantino, Nathaniel J Dominy, Alison A Elgart, Halszka Glowacka, Laura C Loyola, Kerry Ossi-Lupo, Melissa Raguet-Schofield, Mauricio G Talebi, Enrico A Sala, Pawel Sieradzy, Andrea B Taylor, Christopher J Vinyard, Barth W Wright, Nayuta Yamashita, Peter W Lucas, Erin R Vogel
Substantial variation exists in the mechanical properties of foods consumed by primate species. This variation is known to influence food selection and ingestion among non-human primates, yet no large-scale comparative study has examined the relationships between food mechanical properties and feeding strategies. Here, we present comparative data on the Young's modulus and fracture toughness of natural foods in the diets of 31 primate species. We use these data to examine the relationships between food mechanical properties and dietary quality, body mass, and feeding time...
September 2016: Journal of Human Evolution
https://www.readbyqxmd.com/read/27503202/galagos-as-avian-nest-predators-in-south-africa
#19
Derek Engelbrecht
Galagos are generally regarded as dietary specialists that feed predominantly on insects and gum. The diet of the thick-tailed greater galago is more varied and also includes fruit and small vertebrates, although the latter is rare and restricted to certain populations. The southern lesser galago is seemingly a more specialist forager, but frugivory was recently reported in two separate populations, suggesting at least some dietary plasticity in this species. The species is not known to consume vertebrates...
October 2016: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/27206521/the-evolution-of-anthropoid-molar-proportions
#20
Katherine E Carter, Steven Worthington
BACKGROUND: Developmental processes that underpin morphological variation have become a focus of interest when attempting to interpret macroevolutionary patterns. Recently, the Dental Inhibitory Cascade (DIC) model has been suggested to explain much of the variation in mammalian molar size proportions. We tested the macroevolutionary implications of this model using anthropoid primate species (n=100), focusing on overall morphological patterns, as well as predictions made about molar size variability, direct developmental control, and diet...
May 20, 2016: BMC Evolutionary Biology
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