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Lewthwaite JMM, Baiotto TM, Brown BV, Cheung YY, Baker AJ, Lehnen C, McGlynn TP, Shirey V, Gonzalez L, Hartop E, Kerr PH, Wood E, Guzman LM. Drivers of arthropod biodiversity in an urban ecosystem. Sci Rep 2024; 14:390. [PMID: 38172148 PMCID: PMC10764344 DOI: 10.1038/s41598-023-50675-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 12/22/2023] [Indexed: 01/05/2024] Open
Abstract
Our world is becoming increasingly urbanized with a growing human population concentrated around cities. The expansion of urban areas has important consequences for biodiversity, yet the abiotic drivers of biodiversity in urban ecosystems have not been well characterized for the most diverse group of animals on the planet, arthropods. Given their great diversity, comparatively small home ranges, and ability to disperse, arthropods make an excellent model for studying which factors can most accurately predict urban biodiversity. We assessed the effects of (i) topography (distance to natural areas and to ocean) (ii) abiotic factors (mean annual temperature and diurnal range), and (iii) anthropogenic drivers (land value and amount of impervious surface) on the occurrence of six arthropod groups represented in Malaise trap collections run by the BioSCAN project across the Greater Los Angeles Area. We found striking heterogeneity in responses to all factors both within and between taxonomic groups. Diurnal temperature range had a consistently negative effect on occupancy but this effect was only significant in Phoridae. Anthropogenic drivers had mixed though mostly insignificant effects, as some groups and species were most diverse in highly urbanized areas, while other groups showed suppressed diversity. Only Phoridae was significantly affected by land value, where most species were more likely to occur in areas with lower land value. Los Angeles can support high regional arthropod diversity, but spatial community composition is highly dependent on the taxonomic group.
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Affiliation(s)
- Jayme M M Lewthwaite
- Marine and Environmental Section, Department of Biological Sciences, University of Southern California, Los Angeles, 90089, USA
| | - Teagan M Baiotto
- Marine and Environmental Section, Department of Biological Sciences, University of Southern California, Los Angeles, 90089, USA
| | - Brian V Brown
- Department of Entomology, Natural History Museum of Los Angeles County, Los Angeles, 90007, USA
| | - Yan Yin Cheung
- Marine and Environmental Section, Department of Biological Sciences, University of Southern California, Los Angeles, 90089, USA
| | - Austin J Baker
- Marine and Environmental Section, Department of Biological Sciences, University of Southern California, Los Angeles, 90089, USA
- Department of Entomology, Natural History Museum of Los Angeles County, Los Angeles, 90007, USA
| | - Charles Lehnen
- Marine and Environmental Section, Department of Biological Sciences, University of Southern California, Los Angeles, 90089, USA
- Human Evolutionary Biology Section, Department of Biological Sciences, University of Southern California, Los Angeles, 90089, USA
| | - Terrence P McGlynn
- Department of Entomology, Natural History Museum of Los Angeles County, Los Angeles, 90007, USA
- Department of Biology, California State University Dominguez Hills, Carson, 90747, USA
| | - Vaughn Shirey
- Marine and Environmental Section, Department of Biological Sciences, University of Southern California, Los Angeles, 90089, USA
- Department of Biology, Georgetown University, Washington, DC, 20057, USA
| | - Lisa Gonzalez
- Natural History Museum of Los Angeles County, Los Angeles, 90007, USA
| | - Emily Hartop
- Center for Integrative Biodiversity Discovery, Museum für Naturkunde, Berlin, Germany
| | - Peter H Kerr
- California State Collection of Arthropods, CDFA Plant Pest Diagnostics Center, Sacramento, CA, 95832, USA
| | - Eric Wood
- Department of Biological Sciences, California State University Los Angeles, 5151 State University Drive, Los Angeles, 90032, USA
| | - Laura Melissa Guzman
- Marine and Environmental Section, Department of Biological Sciences, University of Southern California, Los Angeles, 90089, USA.
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Adams BJ, Li E, Bahlai CA, Meineke EK, McGlynn TP, Brown BV. Local- and landscape-scale variables shape insect diversity in an urban biodiversity hot spot. Ecol Appl 2020; 30:e02089. [PMID: 32017294 PMCID: PMC7317463 DOI: 10.1002/eap.2089] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 12/03/2019] [Accepted: 01/06/2020] [Indexed: 05/23/2023]
Abstract
Local community structure is shaped by processes acting at local and landscape scales. The relative importance of drivers operating across different spatial scales is difficult to test without observations across regional or latitudinal gradients. Cities exhibit strong but predictable environmental gradients overlaying a mosaic of highly variable but repeated habitat types within a constrained area. Thus, cities present a unique opportunity to explore how both local and landscape factors influence local biotic communities. We used insect communities to examine the interactions among local environmental variables (such as temperature and relative humidity), local habitat characteristics (such as plant community composition), and broad-scale patterns of urbanization (including biophysical, human-built, and socioeconomic variables) on local insect abundance, species richness, and species composition in Los Angeles, a hot, dry, near-desert city. After accounting for seasonal trends, insect species richness and abundance were highest in drier and hotter sites, but the magnitude of local environmental effects varied with the degree of urbanization. In contrast, insect species composition was best predicted by broad-scale urbanization trends, with the more native communities occurring in less urbanized sites and more cosmopolitan insects occurring in highly urbanized sites. However, insect species richness and abundance were >30% higher and insect composition was similar across sites that hosted either native or drought-tolerant plants, regardless of the degree of urbanization. These results demonstrate that urban insect biodiversity is a product of interacting mechanisms working at both local and landscape scales. However, local-scale changes to urban habitats, such as cultivating plants that are adapted to the natural environment nearest the city, can positively impact urban biodiversity regardless of location.
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Affiliation(s)
- Benjamin J. Adams
- Urban Nature Research CenterNatural History Museum of Los Angeles CountyLos AngelesCalifornia90007USA
| | - Enjie Li
- Urban Nature Research CenterNatural History Museum of Los Angeles CountyLos AngelesCalifornia90007USA
| | | | - Emily K. Meineke
- Department of Entomology and NematologyUniversity of CaliforniaDavisCalifornia95616USA
| | - Terrence P. McGlynn
- Department of BiologyCalifornia State UniversityDominguez HillsCarsonCalifornia90747USA
- Department of EntomologyNatural History Museum of Los Angeles CountyLos AngelesCalifornia90007USA
| | - Brian V. Brown
- Urban Nature Research CenterNatural History Museum of Los Angeles CountyLos AngelesCalifornia90007USA
- Department of EntomologyNatural History Museum of Los Angeles CountyLos AngelesCalifornia90007USA
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3
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McGlynn TP, Meineke EK, Bahlai CA, Li E, Hartop EA, Adams BJ, Brown BV. Temperature accounts for the biodiversity of a hyperdiverse group of insects in urban Los Angeles. Proc Biol Sci 2019; 286:20191818. [PMID: 31575368 PMCID: PMC6790764 DOI: 10.1098/rspb.2019.1818] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The urban heat island effect is a worldwide phenomenon that has been linked to species distributions and abundances in cities. However, effects of urban heat on biotic communities are nearly impossible to disentangle from effects of land cover in most cases because hotter urban sites also have less vegetation and more impervious surfaces than cooler sites within cities. We sampled phorid flies, one of the largest, most biologically diverse families of true flies (Insecta: Diptera: Phoridae), at 30 sites distributed within the central Los Angeles Basin, where we found that temperature and the density of urban land cover are decoupled. Abundance, richness, and community composition of phorids inside urban Los Angeles were most parsimoniously accounted for by mean air temperature in the week preceding sampling. Sites with intermediate mean temperatures had more phorid fly individuals and higher richness. Communities were more even at urban sites with lower minimum temperatures and sites located further away from natural areas, suggesting that communities separated from natural source populations may be more homogenized. Species composition was best explained by minimum temperature. Inasmuch as warmer areas within cities can predict future effects of climate change, phorid fly communities are likely to shift nonlinearly under future climates in more natural areas. Exhaustive surveys of biotic communities within cities, such as the one we describe here, can provide baselines for determining the effects of urban and global climate warming as they intensify.
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Affiliation(s)
- Terrence P McGlynn
- Department of Biology, California State University Dominguez Hills, Carson, CA 90747, USA.,Urban Nature Research Center, Natural History Museum of Los Angeles County, Los Angeles, CA 90007, USA
| | - Emily K Meineke
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA
| | - Christie A Bahlai
- Department of Biological Sciences, Kent State University, Kent, OH 44242, USA
| | - Enjie Li
- Urban Nature Research Center, Natural History Museum of Los Angeles County, Los Angeles, CA 90007, USA
| | - Emily A Hartop
- Urban Nature Research Center, Natural History Museum of Los Angeles County, Los Angeles, CA 90007, USA.,Department of Zoology, Stockholm University, 106 91 Stockholm, Sweden
| | - Benjamin J Adams
- Urban Nature Research Center, Natural History Museum of Los Angeles County, Los Angeles, CA 90007, USA
| | - Brian V Brown
- Urban Nature Research Center, Natural History Museum of Los Angeles County, Los Angeles, CA 90007, USA
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4
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Saunders ME, Duffy MA, Heard SB, Kosmala M, Leather SR, McGlynn TP, Ollerton J, Parachnowitsch AL. Bringing ecology blogging into the scientific fold: measuring reach and impact of science community blogs. R Soc Open Sci 2017; 4:170957. [PMID: 29134093 PMCID: PMC5666276 DOI: 10.1098/rsos.170957] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 09/05/2017] [Indexed: 06/07/2023]
Abstract
The popularity of science blogging has increased in recent years, but the number of academic scientists who maintain regular blogs is limited. The role and impact of science communication blogs aimed at general audiences is often discussed, but the value of science community blogs aimed at the academic community has largely been overlooked. Here, we focus on our own experiences as bloggers to argue that science community blogs are valuable to the academic community. We use data from our own blogs (n = 7) to illustrate some of the factors influencing reach and impact of science community blogs. We then discuss the value of blogs as a standalone medium, where rapid communication of scholarly ideas, opinions and short observational notes can enhance scientific discourse, and discussion of personal experiences can provide indirect mentorship for junior researchers and scientists from underrepresented groups. Finally, we argue that science community blogs can be treated as a primary source and provide some key points to consider when citing blogs in peer-reviewed literature.
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Affiliation(s)
- Manu E. Saunders
- UNE Business School/School of Environmental and Rural Sciences, University of New England, Armidale, New South Wales 2351, Australia
| | - Meghan A. Duffy
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Stephen B. Heard
- Department of Biology, University of New Brunswick, Fredericton, New Brunswick, CanadaE3B 5A3
| | - Margaret Kosmala
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA
| | - Simon R. Leather
- Crop and Environment Sciences, Harper Adams University, Edgmond, Newport TF10 8NB, UK
| | - Terrence P. McGlynn
- Department of Biology, California State University Dominguez Hills, Carson, CA 90747, USA
- Department of Entomology, Natural History Museum of Los Angeles County, Los Angeles, CA 90007, USA
| | - Jeff Ollerton
- Faculty of Arts, Science and Technology, University of Northampton, Avenue Campus, Northampton NN2 6JD, UK
| | - Amy L. Parachnowitsch
- Department of Plant Ecology and Evolution, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18D, Uppsala 75236, Sweden
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Gibb H, Dunn RR, Sanders NJ, Grossman BF, Photakis M, Abril S, Agosti D, Andersen AN, Angulo E, Armbrecht I, Arnan X, Baccaro FB, Bishop TR, Boulay R, Brühl C, Castracani C, Cerda X, Del Toro I, Delsinne T, Diaz M, Donoso DA, Ellison AM, Enriquez ML, Fayle TM, Feener DH, Fisher BL, Fisher RN, Fitzpatrick MC, Gómez C, Gotelli NJ, Gove A, Grasso DA, Groc S, Guenard B, Gunawardene N, Heterick B, Hoffmann B, Janda M, Jenkins C, Kaspari M, Klimes P, Lach L, Laeger T, Lattke J, Leponce M, Lessard JP, Longino J, Lucky A, Luke SH, Majer J, McGlynn TP, Menke S, Mezger D, Mori A, Moses J, Munyai TC, Pacheco R, Paknia O, Pearce-Duvet J, Pfeiffer M, Philpott SM, Resasco J, Retana J, Silva RR, Sorger MD, Souza J, Suarez A, Tista M, Vasconcelos HL, Vonshak M, Weiser MD, Yates M, Parr CL. A global database of ant species abundances. Ecology 2017; 98:883-884. [DOI: 10.1002/ecy.1682] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 11/22/2016] [Accepted: 11/29/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Heloise Gibb
- Department of Ecology, Environment and Evolution; La Trobe University; Melbourne 3086 Victoria Australia
| | - Rob R. Dunn
- Department of Applied Ecology; North Carolina State University; Raleigh North Carolina 27695 USA
- Center for Macroecology, Evolution, and Climate; Natural History Museum of Denmark; University of Copenhagen; Universitetsparken 15 DK-2100 Copenhagen Ø Denmark
| | - Nathan J. Sanders
- Center for Macroecology, Evolution, and Climate; Natural History Museum of Denmark; University of Copenhagen; Universitetsparken 15 DK-2100 Copenhagen Ø Denmark
| | - Blair F. Grossman
- Department of Ecology, Environment and Evolution; La Trobe University; Melbourne 3086 Victoria Australia
| | - Manoli Photakis
- Department of Ecology, Environment and Evolution; La Trobe University; Melbourne 3086 Victoria Australia
| | - Silvia Abril
- Department of Environmental Science; University of Girona; Montilivi Campus s/n 17071 Girona Spain
| | - Donat Agosti
- Naturhistorisches Museum Bern; Bernastrasse 15 3005 Bern Switzerland
| | - Alan N. Andersen
- CSIRO Ecosystem Sciences, Tropical Ecosystems Research Centre; PMB 44 Winnellie Northern Territory 0822 Australia
| | - Elena Angulo
- Departamento de Etología y Conservación de la Biodiversidad; Estación Biológica de Doñana; Avenida Americo Vespucio s/n (Isla de la Cartuja) Sevilla 41092 Spain
| | - Inge Armbrecht
- Facultad de Ciencias Naturales y Exactas; Universidad del Valle; Cali Colombia
| | - Xavier Arnan
- Departamento de Botânica; Universidade Federal Pernambuco; Avenida Prof Moraes Rego s/no Cidade Universitária Pernambuco Brazil
| | - Fabricio B. Baccaro
- Departamento de Biologia; Universidade Federal do Amazonas-UFAM; Manaus Amazonas Brazil
| | - Tom R. Bishop
- Department of Earth, Ocean and Ecological Sciences; University of Liverpool; Liverpool L69 3GP United Kingdom
- Department of Zoology and Entomology; Centre for Invasion Biology; University of Pretoria; Pretoria 0002 South Africa
| | - Raphaël Boulay
- Institut de Recherche sur la Biologie de l'Insecte et Département, d'Aménagement du Territoire Université; François Rabelais de Tours; Tours 37200 France
| | - Carsten Brühl
- Institute for Environmental Sciences; University Koblenz-Landau; Fortstraße 7 76829 Landau in der Pfalz Germany
| | - Cristina Castracani
- Department of Life Sciences; University of Parma; Parco Area delle Scienze 11/A Parma 43124 Italy
| | - Xim Cerda
- Departamento de Etología y Conservación de la Biodiversidad; Estación Biológica de Doñana; Avenida Americo Vespucio s/n (Isla de la Cartuja) Sevilla 41092 Spain
| | - Israel Del Toro
- Center for Macroecology, Evolution, and Climate; Natural History Museum of Denmark; University of Copenhagen; Universitetsparken 15 DK-2100 Copenhagen Ø Denmark
| | - Thibaut Delsinne
- Société d'Histoire Naturelle Alcide-d'Orbigny; 57 rue de Gergovie 63170 Aubière France
| | - Mireia Diaz
- Department of Environmental Science; University of Girona; Montilivi Campus s/n 17071 Girona Spain
| | - David A. Donoso
- Instituto de Ciencias Biológicas; Escuela Politécnica Nacional; Avenida Ladrón de Guevara E11253 Quito Ecuador
| | - Aaron M. Ellison
- Harvard Forest; Harvard University; 324 North Main Street Petersham Massachusetts 01366 USA
- Departments of Biology and Environmental Conservation; University of Massachusetts; Morrill Science Center and Holdsworth Hall, 611 North Pleasant Street Amherst Massachusetts 01003 USA
- Faculty of Arts, Business and Law; Tropical Forests and People Research Centre; University of the Sunshine Coast; 90 Sippy Downs Drive Sippy Downs Queensland 4556 Australia
| | - Martha L. Enriquez
- Department of Environmental Science; University of Girona; Montilivi Campus s/n 17071 Girona Spain
| | - Tom M. Fayle
- Institute of Entomology; Biology Centre of Academy of Sciences Czech Republic and Faculty of Science; University of South Bohemia; Branišovská 31 České Budějovice 370 05 Czech Republic
- Forest Ecology and Conservation Group; Imperial College London; Silwood Park Campus, Buckhurst Road Ascot SL5 7PY United Kingdom
| | - Donald H. Feener
- Department of Biology; University of Utah; Salt Lake City Utah 84112 USA
| | - Brian L. Fisher
- Entomology; California Academy of Sciences; San Francisco California USA
| | - Robert N. Fisher
- Western Ecological Research Center; U.S. Geological Survey; San Diego Field Station 4165 Spruance Road, Suite 200 San Diego California 92101 USA
| | - Matthew C. Fitzpatrick
- Appalachian Laboratory; University of Maryland Centre for Environmental Science; Frostburg Maryland 21532 USA
| | - Crisanto Gómez
- Department of Environmental Science; University of Girona; Montilivi Campus s/n 17071 Girona Spain
| | | | - Aaron Gove
- Astron Environmental Services; Perth Western Australia Australia
- Department of Environment and Agriculture; Curtin University; G.P.O. Box U1987 Perth Western Australia 6845 Australia
| | - Donato A. Grasso
- Department of Life Sciences; University of Parma; Parco Area delle Scienze 11/A Parma 43124 Italy
| | - Sarah Groc
- Instituto de Biologia; Universidade Federal de Uberlândia (UFU) Rua Ceara; Uberlândia Minas Gerais 38400-902 Brazil
| | - Benoit Guenard
- School of Biological Sciences; The University of Hong Kong; Pok Fu Lam Road Hong Kong China
| | - Nihara Gunawardene
- Department of Environment and Agriculture; Curtin University; G.P.O. Box U1987 Perth Western Australia 6845 Australia
| | - Brian Heterick
- Department of Environment and Agriculture; Curtin University; G.P.O. Box U1987 Perth Western Australia 6845 Australia
| | - Benjamin Hoffmann
- CSIRO Ecosystem Sciences, Tropical Ecosystems Research Centre; PMB 44 Winnellie Northern Territory 0822 Australia
| | - Milan Janda
- Institute of Entomology; Biology Centre of Academy of Sciences Czech Republic and Faculty of Science; University of South Bohemia; Branišovská 31 České Budějovice 370 05 Czech Republic
- Department of Biology; University of Guanajuato; Noria Alta sn. Guanajuato Mexico
| | - Clinton Jenkins
- IPÊ-Instituto de Pesquisas Ecológicas; Nazaré Paulista São Paulo 12960-000 Brazil
| | - Michael Kaspari
- Department of Biology; University of Oklahoma; 730 Van Vleet Oval, Room 314 Norman Oklahoma 73019 USA
| | - Petr Klimes
- Institute of Entomology; Biology Centre of Academy of Sciences Czech Republic and Faculty of Science; University of South Bohemia; Branišovská 31 České Budějovice 370 05 Czech Republic
- New Guinea Binatang Research Center; P.O. Box 604 Madang Papua New Guinea
| | - Lori Lach
- Centre for Tropical Biology and Climate Change; School of Marine and Tropical Biology; James Cook University; P.O. Box 6811 Cairns Queensland 4870 Australia
| | | | - John Lattke
- Departamento de Zoologia; Universidade Federal do Paraná; Caixa Postal 19020 81531-980 Curitiba Paraná Brazil
| | - Maurice Leponce
- Section of Biological Evaluation; Royal Belgian Institute of Natural Sciences; Rue Vautier, 29 Brussels 1000 Belgium
| | | | - John Longino
- Department of Biology; University of Utah; Salt Lake City Utah 84112 USA
| | - Andrea Lucky
- Entomology and Nematology Department; University of Florida; 970 Natural Area Drive Gainesville Florida 32611 USA
| | - Sarah H. Luke
- School of Biological Sciences; University of East Anglia; Norwich NR4 7TJ United Kingdom
- Department of Zoology; University of Cambridge; Downing Street Cambridge CB2 3EJ United Kingdom
| | - Jonathan Majer
- Department of Environment and Agriculture; Curtin University; G.P.O. Box U1987 Perth Western Australia 6845 Australia
- School of Plant Biology; The University of Western Australia; 35 Stirling Highway Crawley Western Australia 6009 Australia
| | - Terrence P. McGlynn
- Depatment of Biology; California State University Dominguez Hills; 1000 East Victoria Street Carson California 90747 USA
- Department of Entomology; Natural History Museum of Los Angeles County; Los Angeles California USA
| | - Sean Menke
- Department of Biology; Lake Forest College; 555 North Sheridan Road Lake Forest Illinois 60045 USA
| | - Dirk Mezger
- Division of Insects; Department of Zoology; Moreau Lab; Field Museum of Natural History; 1400 South Lake Shore Drive Chicago Illinois 60605 USA
| | - Alessandra Mori
- Department of Life Sciences; University of Parma; Parco Area delle Scienze 11/A Parma 43124 Italy
| | - Jimmy Moses
- Institute of Entomology; Biology Centre of Academy of Sciences Czech Republic and Faculty of Science; University of South Bohemia; Branišovská 31 České Budějovice 370 05 Czech Republic
- New Guinea Binatang Research Center; P.O. Box 604 Madang Papua New Guinea
| | - Thinandavha Caswell Munyai
- School of Life Sciences; College of Agriculture Engineering and Science; University of KwaZulu-Natal; Pietermaritzburg 3209 South Africa
| | - Renata Pacheco
- Instituto de Biologia; Universidade Federal de Uberlândia (UFU) Rua Ceara; Uberlândia Minas Gerais 38400-902 Brazil
| | - Omid Paknia
- Institute of Animal Ecology and Cell Biology; TiHo Hannover; Bünteweg 17d Hannover 30559 Germany
| | | | - Martin Pfeiffer
- Department of Ecology; National University of Mongolia; Baga Toiruu 47 P.O. Box 377 Ulaanbaatar 210646 Mongolia
| | - Stacy M. Philpott
- Environmental Studies Department; University of California; 1156 High Street Santa Cruz California 95060 USA
| | - Julian Resasco
- The Department of Ecology and Evolutionary Biology; University of Colorado; UCB 334 Boulder Colorado 80309 USA
| | - Javier Retana
- Universitat Autònoma Barcelona; Cerdanyola del Vallès 08193 Spain
| | - Rogerio R. Silva
- Coordenação de Ciências da Terra e Ecologia; Museu Paraense Emílio Goeldi; Belém Pará Brazil
| | - Magdalena D. Sorger
- Department of Applied Ecology; North Carolina State University; Raleigh North Carolina 27695 USA
| | - Jorge Souza
- Coordenação de Biodiversidade; National Institute of Amazonian Research; Manaus Amazonas Brazil
| | - Andrew Suarez
- Department of Entomology; University of Illinois, Urbana-Champaign; Urbana Illinois 61801 USA
| | - Melanie Tista
- Department of Tropical Ecology and Animal Biodiversity; University of Vienna; Rennweg 14 Vienna 1030 Austria
| | - Heraldo L. Vasconcelos
- Instituto de Biologia; Universidade Federal de Uberlândia (UFU) Rua Ceara; Uberlândia Minas Gerais 38400-902 Brazil
| | - Merav Vonshak
- Department of Biology; Stanford University; Stanford California 94305 USA
| | - Michael D. Weiser
- Department of Biology; University of Oklahoma; 730 Van Vleet Oval, Room 314 Norman Oklahoma 73019 USA
| | - Michelle Yates
- Centre for Behavioural and Physiological Ecology, Zoology; University of New England; Armidale New South Wales Australia
| | - Catherine L. Parr
- Department of Earth, Ocean and Ecological Sciences; University of Liverpool; Liverpool L69 3GP United Kingdom
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Chips MJ, Yerger EH, Hervanek A, Nuttle T, Royo AA, Pruitt JN, McGlynn TP, Riggall CL, Carson WP. The Indirect Impact of Long-Term Overbrowsing on Insects in the Allegheny National Forest Region of Pennsylvania. Northeast Nat (Steuben) 2015. [DOI: 10.1656/045.022.0412] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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McGlynn TP, Graham R, Wilson J, Emerson J, Jandt JM, Jahren AH. Distinct types of foragers in the ant Ectatomma ruidum: typical foragers and furtive thieves. Anim Behav 2015. [DOI: 10.1016/j.anbehav.2015.08.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Jandt JM, Hunt EM, McGlynn TP. Intraspecific Food-Robbing and Neighborhood Competition: Consequences for Anti-Robber Vigilance and Colony Productivity. Biotropica 2015. [DOI: 10.1111/btp.12234] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jennifer M. Jandt
- Department of Ecology, Evolutionary, and Organismal Biology; Iowa State University; Ames Iowa U.S.A
- Department of Zoology; University of Otago; Dunedin New Zealand
| | - Elizabeth M. Hunt
- Department of Biology; California State University Dominguez Hills; Carson California U.S.A
| | - Terrence P. McGlynn
- Department of Biology; California State University Dominguez Hills; Carson California U.S.A
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Larson HK, Goffredi SK, Parra EL, Vargas O, Pinto-Tomas AA, McGlynn TP. Distribution and dietary regulation of an associated facultative Rhizobiales-related bacterium in the omnivorous giant tropical ant, Paraponera clavata. Naturwissenschaften 2014; 101:397-406. [PMID: 24682514 DOI: 10.1007/s00114-014-1168-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 03/14/2014] [Indexed: 10/25/2022]
Abstract
We document a facultative Bartonella-like Rhizobiales bacterium in the giant tropical ant, Paraponera clavata. In a lowland tropical rainforest in Costa Rica, 59 colonies were assayed for the prevalence of the Bartonella-like bacterium (BLB), 14 of which were positive. We addressed three questions: First, how does the prevalence of BLB within colonies vary with environmental conditions? Second, how does diet affect the prevalence of BLB in P. clavata? Third, how does the distribution of BLB among colonies reflect ambient differences in food resources and foraging habits? A variety of environmental variables that may be predictive of the presence of BLB were measured, and diet manipulations were conducted to test whether the prevalence of BLB responded to supplemental carbohydrate or prey. The ambient frequency of BLB is much higher in young secondary forests, but is nearly absent from older secondary forests. The prevalence of BLB inside field colonies increased over the duration of a 2-week carbohydrate supplementation; however, water and prey supplementation did not alter the prevalence of BLB. The diets of the colonies located in young secondary forest, compared to other habitats, have a diet richer in carbohydrates and lower in prey. The abundance of carbohydrate, or the relative lack of N, in a colony's diet influences the occurrence of the BLB microbe in P. clavata. As experimental diet manipulations can affect the facultative presence of an N-cycling microbe, a consistent diet shift in diet may facilitate the emergence of tighter symbioses.
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Affiliation(s)
- Hannah K Larson
- Department of Biology, California State University Dominguez Hills, 1000 E. Victoria St., Carson, CA, 90947, USA
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Jandt J, Larson HK, Tellez P, McGlynn TP. To drink or grasp? How bullet ants (Paraponera clavata) differentiate between sugars and proteins in liquids. Naturwissenschaften 2013; 100:1109-14. [DOI: 10.1007/s00114-013-1109-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 10/14/2013] [Accepted: 10/15/2013] [Indexed: 11/24/2022]
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McGlynn TP, Alonso-Rodríguez AM, Weaver M. A test of species-energy theory: patch occupancy and colony size in tropical rainforest litter-nesting ants. OIKOS 2013. [DOI: 10.1111/j.1600-0706.2013.00102.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Affiliation(s)
| | - Terrence P. McGlynn
- Department of Biology; California State University; Dominguez Hills; 1000 E. Victoria Street Carson; CA; 90747; U.S.A
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McGlynn TP, Diamond SE, Dunn RR. Tradeoffs in the evolution of caste and body size in the hyperdiverse ant genus Pheidole. PLoS One 2012; 7:e48202. [PMID: 23133570 PMCID: PMC3485035 DOI: 10.1371/journal.pone.0048202] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Accepted: 09/24/2012] [Indexed: 11/24/2022] Open
Abstract
The efficient investment of resources is often the route to ecological success, and the adaptability of resource investment may play a critical role in promoting biodiversity. The ants of the “hyperdiverse” genus Pheidole produce two discrete sterile castes, soldiers and minor workers. Within Pheidole, there is tremendous interspecific variation in proportion of soldiers. The causes and correlates of caste ratio variation among species of Pheidole remain enigmatic. Here we test whether a body size threshold model accounts for interspecific variation in caste ratio in Pheidole, such that species with larger body sizes produce relatively fewer soldiers within their colonies. We evaluated the caste ratio of 26 species of Pheidole and found that the body size of workers accounts for interspecific variation in the production of soldiers as we predicted. Twelve species sampled from one forest in Costa Rica yielded the same relationship as found in previously published data from many localities. We conclude that production of soldiers in the most species-rich group of ants is regulated by a body size threshold mechanism, and that the great variation in body size and caste ratio in Pheidole plays a role in niche divergence in this rapidly evolving taxon.
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Affiliation(s)
- Terrence P McGlynn
- Department of Biology, California State University Dominguez Hills, Carson, California, United States of America.
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Abstract
Social insect colonies are typically mobile entities, moving nests from one location to another throughout the life of a colony. The majority of social insect species-ants, bees, wasps, and termites-have likely adopted the habit of relocating nests periodically. The syndromes of nest relocation include legionary nomadism, unstable nesting, intrinsic nest relocation, and adventitious nest relocation. The emergence of nest movement is a functional response to a broad range of potential selective forces, including colony growth, competition, foraging efficiency, microclimate, nest deterioration, nest quality, parasitism, predation, and seasonality. Considering the great taxonomic and geographic distribution of nest movements, assumptions regarding the nesting biology of social insects should be reevaluated, including our understanding of population genetics, life-history evolution, and the role of competition in structuring communities.
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Affiliation(s)
- Terrence P McGlynn
- Department of Biology, California State University Dominguez Hills, Carson, California 90747, USA.
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Jenkins CN, Sanders NJ, Andersen AN, Arnan X, Brühl CA, Cerda X, Ellison AM, Fisher BL, Fitzpatrick MC, Gotelli NJ, Gove AD, Guénard B, Lattke JE, Lessard JP, McGlynn TP, Menke SB, Parr CL, Philpott SM, Vasconcelos HL, Weiser MD, Dunn RR. Global diversity in light of climate change: the case of ants. DIVERS DISTRIB 2011. [DOI: 10.1111/j.1472-4642.2011.00770.x] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Wood WF, Hoang TT, McGlynn TP. Volatile components from the mandibular glands of the turtle ants, Cephalotes alfaroi and Cephalotes cristatus. BIOCHEM SYST ECOL 2011. [DOI: 10.1016/j.bse.2011.01.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Weiser MD, Sanders NJ, Agosti D, Andersen AN, Ellison AM, Fisher BL, Gibb H, Gotelli NJ, Gove AD, Gross K, Guénard B, Janda M, Kaspari M, Lessard JP, Longino JT, Majer JD, Menke SB, McGlynn TP, Parr CL, Philpott SM, Retana J, Suarez AV, Vasconcelos HL, Yanoviak SP, Dunn RR. Canopy and litter ant assemblages share similar climate-species density relationships. Biol Lett 2010; 6:769-72. [PMID: 20462885 DOI: 10.1098/rsbl.2010.0151] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Tropical forest canopies house most of the globe's diversity, yet little is known about global patterns and drivers of canopy diversity. Here, we present models of ant species density, using climate, abundance and habitat (i.e. canopy versus litter) as predictors. Ant species density is positively associated with temperature and precipitation, and negatively (or non-significantly) associated with two metrics of seasonality, precipitation seasonality and temperature range. Ant species density was significantly higher in canopy samples, but this difference disappeared once abundance was considered. Thus, apparent differences in species density between canopy and litter samples are probably owing to differences in abundance-diversity relationships, and not differences in climate-diversity relationships. Thus, it appears that canopy and litter ant assemblages share a common abundance-diversity relationship influenced by similar but not identical climatic drivers.
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Affiliation(s)
- Michael D Weiser
- Department of Biology, North Carolina State University, Raleigh, NC 27695, USA.
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McGlynn TP, Weiser MD, Dunn RR. More individuals but fewer species: testing the 'more individuals hypothesis' in a diverse tropical fauna. Biol Lett 2010; 6:490-3. [PMID: 20200023 DOI: 10.1098/rsbl.2010.0103] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
A positive relationship between species richness and productivity is often observed in nature, but the causes remain contentious. One mechanism, the 'more individuals hypothesis' (MIH), predicts richness increases monotonically with density, as a function of resource flux. To test the MIH, we manipulated resource abundance in a community of tropical rainforest litter ants and measured richness and density responses. A unimodal relationship between richness and density most closely fitted the control and disturbance (resource removal) treatments in contrast to expectations of the MIH. Resource addition resulted in a monotonic increase in richness relative to density, a shift from the pattern in the control. In the disturbance treatment, richness was greater than in the control, opposite to expectations of the MIH. While large-scale correlations between ant diversity and net primary productivity or temperature are reconcilable with the MIH, key elements of the hypothesis are not supported.
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Affiliation(s)
- Terrence P McGlynn
- Department of Biology, California State University Dominguez Hills, Carson, CA, USA.
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McGlynn TP, Choi HK, Mattingly ST, Upshaw A, Poirson EK, Betzelberger J. Spurious and functional correlates of the isotopic composition of a generalist across a tropical rainforest landscape. BMC Ecol 2009; 9:23. [PMID: 19930701 PMCID: PMC2788522 DOI: 10.1186/1472-6785-9-23] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Accepted: 11/24/2009] [Indexed: 11/22/2022] Open
Abstract
Background The isotopic composition of generalist consumers may be expected to vary in space as a consequence of spatial heterogeneity in isotope ratios, the abundance of resources, and competition. We aim to account for the spatial variation in the carbon and nitrogen isotopic composition of a generalized predatory species across a 500 ha. tropical rain forest landscape. We test competing models to account for relative influence of resources and competitors to the carbon and nitrogen isotopic enrichment of gypsy ants (Aphaenogaster araneoides), taking into account site-specific differences in baseline isotope ratios. Results We found that 75% of the variance in the fraction of 15N in the tissue of A. araneoides was accounted by one environmental parameter, the concentration of soil phosphorus. After taking into account landscape-scale variation in baseline resources, the most parsimonious model indicated that colony growth and leaf litter biomass accounted for nearly all of the variance in the δ15N discrimination factor, whereas the δ13C discrimination factor was most parsimoniously associated with colony size and the rate of leaf litter decomposition. There was no indication that competitor density or diversity accounted for spatial differences in the isotopic composition of gypsy ants. Conclusion Across a 500 ha. landscape, soil phosphorus accounted for spatial variation in baseline nitrogen isotope ratios. The δ15N discrimination factor of a higher order consumer in this food web was structured by bottom-up influences - the quantity and decomposition rate of leaf litter. Stable isotope studies on the trophic biology of consumers may benefit from explicit spatial design to account for edaphic properties that alter the baseline at fine spatial grains.
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Affiliation(s)
- Terrence P McGlynn
- Department of Biology, California State University Dominguez Hills,1000 E Victoria St Carson, CA 90747, USA.
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Dunn RR, Agosti D, Andersen AN, Arnan X, Bruhl CA, Cerdá X, Ellison AM, Fisher BL, Fitzpatrick MC, Gibb H, Gotelli NJ, Gove AD, Guenard B, Janda M, Kaspari M, Laurent EJ, Lessard JP, Longino JT, Majer JD, Menke SB, McGlynn TP, Parr CL, Philpott SM, Pfeiffer M, Retana J, Suarez AV, Vasconcelos HL, Weiser MD, Sanders NJ. Climatic drivers of hemispheric asymmetry in global patterns of ant species richness. Ecol Lett 2009; 12:324-33. [DOI: 10.1111/j.1461-0248.2009.01291.x] [Citation(s) in RCA: 163] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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McGlynn TP, Fawcett RM, Clark DA. Litter Biomass and Nutrient Determinants of Ant Density, Nest Size, and Growth in a Costa Rican Tropical Wet Forest. Biotropica 2009. [DOI: 10.1111/j.1744-7429.2008.00465.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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McGlynn TP, Kirksey SE. The effects of food presentation and microhabitat upon resource monopoly in a ground-foraging ant (Hymenoptera: Formicidae) community. REV BIOL TROP 2000; 48:629-41. [PMID: 11354970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2023] Open
Abstract
In Neotropical wet forests several species of omnivorous, resource-defending ants, live and forage in close proximity to one another. Although the forest floor is heterogeneous in microhabitat and food quantity, little is known about the impact of microhabitat and food variation upon resource monopoly among ants. We investigated how food type and microhabitat influence food monopoly in resource-defending ants in old-growth tropical wet forest in the Caribbean lowlands of Costa Rica. We measured several microhabitat characteristics at 66 points in a 0.5 hectare plot, and baited each point with two categories of tuna bait. These baits were presented in "split" and "clumped" arrangements. We measured the frequency of bait monopoly by a single species, as well as the number of recruited ant foragers at a bait. Out of five common species, two (Wasmannia auropunctata and Pheidole simonsi) more frequently monopolized one bait type over the other, and one (P. simonsi) recruited more ants to the split baits. We then considered the recruitment response by all ant species in the community. We found that the frequency of monopoly, sharing, and the absence of ants at a given point in the rainforest differed with bait type. The frequency of monopoly was associated with microhabitat type in two out of eight microhabitat variables (leaf litter depth and palms); variation in two other types (canopy tree distance and leafcutter ant trails) was associated with changes in forager number. In at least two ant species, food presentation affected monopoly at baits; among all resource-defending ants, the microhabitats where ants foraged for food and the type of food located determined in part the frequency of monopoly and the number of foragers at the food item. These results suggest that the location and presentation of food items determines in part which ant species will utilize the resource.
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Affiliation(s)
- T P McGlynn
- University of San Diego, Department of Biology, 5998 Alcalá Park, San Diego, CA 92110, USA.
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Abstract
I compare the sizes of non-native and native ants to evaluate how worker size may be related to the ability of a species to invade new habitats. I compare the size of 78 non-native ant species belonging to 26 genera with the size of native congeneric species; native ants are larger than non-native ants in 22 of 26 genera. Ants were sorted by genera into fighting and nonfighting groups, based on observations of interspecific interactions with other ant species. In all of the genera with monomorphic worker castes that fight during competition, the non-native species were smaller than the native species. The genera that engage in combat had a higher frequency of significantly smaller size in non-native ants. I selected Wasmannia auropunctata for further studies, to compare native and non-native populations. Specimens of W. auropunctata from non-native populations were smaller than conspecific counterparts from its native habitat. I consider hypotheses to explain why non-native ants are smaller in size than native ants, including the role of colony size in interspecific fights, changes in life history, the release from intraspecific fighting, and climate. The discovery that fighting non-natives are smaller than their closest native relatives may provide insight into the mechanisms for success of non-native species, as well as the role of worker size and colony size during interspecific competition.
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McGlynn TP, Kirksey SE. The etTects of food presentation and microhabitat upon resource monopoly in a ground-foraging ant (Hymenoptera: Formicidae) community. REV BIOL TROP 1969. [DOI: 10.15517/rbt.v48i2-3.18832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
En los bosques húmedos de la Región Neotropical conviven varias especies de hormigas omívoras, defensoras de recursos alimenticios. Aunque el suelo del bosque es heterogéneo en microhábitat y alimento, se sabe poco sobre el impacto de ambos en las hormigas. Se investiga cómo influencian el tipo de alimento y el microhábitat la forma en que estas hormigas acaparan el alimento en un bosque húmedo tropical maduro ( bajuras de Costa Rica). Se midieron ocho características de microhábitat en 66 puntos de una parcela de 0.5 ha. En cada punto se colocaron dos categorías de cebo ( atún): "dividido" y "agrupado." Se midió el acaparamiento de cebo por especie y el número de hormigas por cebo. De cinco especies comunes, dos (Wasmannia auropunctata y Pheido/e simonsi) monopolizaron con más frecuencia uno de los dos tipos de cebo, y una (P. simonsi) tuvo más individuos en los cebos divididos. La frecuencia de monopolio, comportamiento, y la ausencia de hormigas en punto dado en el bosque varió con el tipo de cebo. La frecuencia de acaparamiento se asoció con tipo de microhábitat en dos variables de microhábitat: profundidad de la hojarasca y palmas; la variación en distancia de bóvedas de árboles y caminos de hormigas cortadoras de hojas se asoció con cambios en el número de buscadores de alimento. En al menos dos especies la presentación del alimento afectó el acaparamiento; entre todas las hormigas estudiadas, los microhábitats y el tipo de alimento determinan en parte la frecuencia de acaparamiento y el número de individuso que llega al alimento. Estos resultados sugieren que la localización y presentación de alimento determina en parte cual especie de hormiga utilizará el recurso.
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