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Grady JM, Amme JL, Bhaskaran-Nair K, Sinha V, Brunwasser SJ, Record S, Dell AI, Hengen KB. Temperature-dependent predation predicts a more reptilian future. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.09.19.613816. [PMID: 39345462 PMCID: PMC11430022 DOI: 10.1101/2024.09.19.613816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 10/01/2024]
Abstract
Diversity increases toward the tropics, but the strength of this pattern diverges with thermoregulatory strategy. Synthesizing over 30,000 species distributions, we quantified patterns of richness in terrestrial vertebrates, and present evidence for a latitudinal gradient of community composition. We observe a two orders of magnitude shift in comparative diversity with temperature, from endothermic mammal and avian dominance near the poles, toward ectothermic reptile and amphibian majority in the tropics. Next, we provide mechanistic support for a corresponding latitudinal gradient of predatory interactions. Using automated video tracking in >4500 trials, we show that differences in thermal sensitivity of locomotion in endothermic predators and ectothermic prey favors endotherms in colder environments and yields theoretically predicted foraging outcomes across thermal conditions, including the number of strikes, the distance traveled, and the time to capture prey. We also present evidence that endotherms use thermal cues to anticipate prey behavior, modulating the impact of temperature. Finally, we integrate theory and data to forecast future patterns of diversity, revealing that as the world get warmer, it will become increasingly reptilian. Overall, our results point toward a broad reorganization of vertebrate diversity with latitude, elevation, and temperature: from endotherm dominance in cold systems toward ectotherm dominance in warm.
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Affiliation(s)
- John M. Grady
- Living Earth Collaborative Center for Biodiversity, Washington University in Saint Louis, St. Louis, MO, USA
- Department of Biology, Washington University in Saint Louis, St. Louis, MO, USA
- Department of Wildlife, Fisheries, and Conservation Biology, University of Maine, Orono, ME, USA
| | - Jacob L. Amme
- Department of Biology, Washington University in Saint Louis, St. Louis, MO, USA
| | | | - Varun Sinha
- Department of Biology, Washington University in Saint Louis, St. Louis, MO, USA
| | | | - Sydne Record
- Department of Wildlife, Fisheries, and Conservation Biology, University of Maine, Orono, ME, USA
| | - Anthony I. Dell
- Living Earth Collaborative Center for Biodiversity, Washington University in Saint Louis, St. Louis, MO, USA
- National Great Rivers Research and Education Center, East Alton IL, USA
| | - Keith B. Hengen
- Department of Biology, Washington University in Saint Louis, St. Louis, MO, USA
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2
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Fattorini S. An Interspecific Assessment of Bergmann's Rule in Tenebrionid Beetles (Coleoptera, Tenebrionidae) along an Elevation Gradient. INSECTS 2024; 15:673. [PMID: 39336641 PMCID: PMC11432099 DOI: 10.3390/insects15090673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2024] [Revised: 08/30/2024] [Accepted: 08/31/2024] [Indexed: 09/30/2024]
Abstract
In endotherms, body size tends to increase with elevation and latitude (i.e., with decreasing temperatures) (Bergmann's rule). These patterns are explained in terms of heat balance since larger animals need to produce less heat relative to their size to maintain stable body temperatures. In ectotherms like most insects, where this mechanism cannot operate, a reverse pattern is frequently observed, as a higher surface area-to-volume ratio in colder climates may allow for more rapid heating and cooling. However, patterns of increasing body size with decreasing temperatures can also be observed in ectotherms if selection for more stable internal temperatures leads to smaller surface area-to-volume ratios. Data on tenebrionids from Latium (Central Italy) were used to model elevational variations in average values of body size (total length, mass and volume) and surface area-to-volume ratio. Analyses were performed by considering the whole fauna and two ecological groups separately: ground-dwelling species (geophilous) and arboreal (xylophilous) species. The surface area-to-volume ratios declined with increasing elevation in all cases, indicating that the need for heat conservation is more important than rapid heating and cooling. However, in xylophilous species (which typically live under bark), body size increased with increasing elevation, and in geophilous species, an opposite pattern was observed up to about 1000 m, followed by an increasing pattern. This suggests that a reduction in resource availability with elevation limits body size in geophilous species up to a certain elevation but not in xylophilopus species, which benefit from more climatically stable conditions and constant resources and need energy for overwintering.
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Affiliation(s)
- Simone Fattorini
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Via Vetoio, 67100 L'Aquila, Italy
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3
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Carbajal-de-la-Fuente AL, Piccinali RV, Porcasi X, Marti GA, de Arias AR, Abrahan L, Suárez FC, Lobbia P, Medina G, Provecho Y, Cortez MR, Soria N, Gonçalves TC, Nattero J. Variety is the spice: The role of morphological variation of Triatoma infestans (Hemiptera, Reduviidae) at a macro-scale. Acta Trop 2024; 256:107239. [PMID: 38735448 DOI: 10.1016/j.actatropica.2024.107239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/02/2024] [Accepted: 05/03/2024] [Indexed: 05/14/2024]
Abstract
Chagas disease is caused by the protozoan parasite Trypanosoma cruzi (Chagas, 1909). One of the primary vectors of T. cruzi in South America is Triatoma infestans (Klug, 1834). This triatomine species is distributed across a huge latitudinal gradient, inhabiting domiciliary , peridomiciliary , and wild environments. Its wide geographic distribution provides an excellent opportunity to study the relationships between environmental gradients and intraspecific morphological variation. In this study, we investigated variations in wing size and shape in T. infestans across six ecoregions. We aimed to address the following questions: How do wing size and shape vary on a regional scale, does morphological variation follow specific patterns along an environmental or latitudinal gradient, and what environmental factors might contribute to wing variation? Geometric morphometric methods were applied to the wings of 162 females belonging to 21 T. infestans populations, 13 from Argentina (n = 105), 5 from Bolivia (n = 42), and 3 from Paraguay (n = 15). A comparison of wing centroid size across the 21 populations showed significant differences. Canonical Variate Analysis (CVA) revealed significant differences in wing shape between the populations from Argentina, Bolivia, and Paraguay, although there was a considerable overlap, especially among the Argentinian populations. Well-structured populations were observed for the Bolivian and Paraguayan groups. Two analyses were performed to assess the association between wing size and shape, geographic and climatic variables: multiple linear regression analysis (MRA) for size and Partial Least Squares (PLS) regression for shape. The MRA showed a significant general model fit. Six temperature-related variables, one precipitation-related variable, and the latitude showed significant associations with wing size. The PLS analysis revealed a significant correlation between wing shape with latitude, longitude, temperature-related, and rainfall-related variables. Wing size and shape in T. infestans populations varied across geographic distribution. Our findings demonstrate that geographic and climatic variables significantly influence T. infestans wing morphology.
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Affiliation(s)
- Ana Laura Carbajal-de-la-Fuente
- Centro Nacional de Diagnóstico e Investigación en Endemo-epidemias (CENDIE/ ANLIS-Malbrán). Av. Paseo Colón 568, CP 1063, Ciudad Autónoma de Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, CP 1425, Ciudad Autónoma de Buenos Aires, Argentina.
| | - Romina V Piccinali
- Laboratorio de Eco-Epidemiología, DEGE (FCEN, UBA), IEGEBA (UBA/CONICET), Intendente Güiraldes 2160 - Ciudad Universitaria - Pabellón 2, CP 1428, Ciudad Autónoma de Buenos Aires, Argentina
| | - Ximena Porcasi
- Instituto Gulich (CONAE UNC), Ruta C45 Km 8, CP 5187, Falda del Cañete, Córdoba, Argentina
| | - Gerardo Aníbal Marti
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE) CCT-La Plata CONICET-UNLP-asociado a CIC, Blvd. 120 y 60 CP 1900, La Plata, Buenos Aires, Argentina
| | - Antonieta Rojas de Arias
- Centro para el Desarrollo de la Investigación Científica (CEDIC), Manduvirá 635 entre 15 de agosto y Oleary, CP 1255, Asunción, Paraguay
| | - Luciana Abrahan
- Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR), UNLAR, SEGEMAR, UNCa, CONICET, Entre Ríos y Mendoza s/n, Anillaco, CP 5301, La Rioja, Provincia de La Rioja, Argentina
| | - Florencia Cano Suárez
- Programa Provincial Control de Vectores, Ministerio de Salud Pública San Juan. Santa Fe 977 (este) predio Hospital Dr Guillermo Rawson, CP 5400, San Juan, Argentina
| | - Patricia Lobbia
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, CP 1425, Ciudad Autónoma de Buenos Aires, Argentina; Unidad Operativa de Vectores y Ambiente (UNOVE), Centro Nacional de Diagnóstico e Investigación en Endemo-epidemias (CENDIE / ANLIS-Malbrán), Pabellón Rawson s/n. Hospital Colonia, CP 2423, Santa María de Punilla, Córdoba, Argentina
| | - Gabriela Medina
- Dirección de Control Integral de Vectores y Zoonosis. Laboratorio Entomológico y Parasitológico. Ministerio de Salud de Catamarca, Chacabuco 169, CP 4700, San Fernando del Valle de Catamarca, Argentina
| | - Yael Provecho
- Ministerio de Salud de la Nación, Dirección de Control de Enfermedades Transmitidas por Vectores. Av. 9 de Julio 1925, CP 1073, Ciudad Autónoma de Buenos Aires, Argentina
| | - Mirko Rojas Cortez
- Fundación Salud Naturaleza Integral (SANIT), Pasaje Fidelia de Sanchez 433, CP 00591, Cochabamba, Bolivia
| | - Nicolás Soria
- División Manejo Integrado de Vectores, Departamento de Zoonosis, Dirección de Jurisdicción de Epidemiología, Ministerio de Salud de la Provincia de Córdoba, Santiago Cáceres 1885, CP 5000, Córdoba, Argentina
| | - Teresa C Gonçalves
- Laboratório Interdisciplinar de Vigilância Entomológica em Diptera e Hemiptera. Instituto Oswaldo Cruz (IOC/ Fundação Oswaldo Cruz). Av. Brasil, 4365, Manguinhos, CP 21040-360, Rio de Janeiro, Brasil
| | - Julieta Nattero
- Laboratorio de Eco-Epidemiología, DEGE (FCEN, UBA), IEGEBA (UBA/CONICET), Intendente Güiraldes 2160 - Ciudad Universitaria - Pabellón 2, CP 1428, Ciudad Autónoma de Buenos Aires, Argentina
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Foerster SÍA, Clarke JT, Õunap E, Teder T, Tammaru T. A comparative study of body size evolution in moths: evidence of correlated evolution with feeding and phenology-related traits. J Evol Biol 2024; 37:891-904. [PMID: 38847298 DOI: 10.1093/jeb/voae072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 03/07/2024] [Accepted: 06/05/2024] [Indexed: 08/02/2024]
Abstract
Interspecific variation in body size is one of the most popular topics in comparative studies. Despite recent advances, little is known about the patterns and processes behind the evolution of body size in insects. Here, we used a robust data set comprising all geometrid moth species occurring in Northern Europe to examine the evolutionary associations involving body size and several life-history traits under an explicitly phylogenetic framework. We provided new insights into the interactive effects of life-history traits on body size and evidence of correlated evolution. We further established the sequence of trait evolution linking body size with the life-history traits correlated with it. We found that most (but not all) of the studied life-history traits, to some extent, influenced interspecific variation in body size, but interactive effects were uncommon. Both bi- and multivariate phylogenetic analyses indicated that larger species tend to be nocturnal flyers, overwinter in the larval stage, feed on the foliage of trees rather than herbs, and have a generalist feeding behaviour. We found evidence of correlated evolution involving body size with overwintering stage, host-plant growth form, and dietary specialization. The examination of evolutionary transitions within the correlated evolution models signalled that overwintering as larvae commonly preceded the evolution of large sizes, as did feeding on tree foliage and the generalist feeding behaviour. By showing that both body size and all life-history traits correlated with it evolve at very slow rates, we caution against uncritical attempts to propose causal explanations for respective associations based on contemporary ecological settings.
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Affiliation(s)
| | - John T Clarke
- German Centre for Integrative Biodiversity Research (iDiv) Halle- Jena- Leipzig, Leipzig, Germany
- Institute of Biodiversity, Friedrich Schiller University Jena, Jena, Germany
- GeoBio-Center, Ludwig-Maximilians-Universität München, Munich, Germany
- Department of Earth and Environmental Sciences, Paleontology & Geobiology, Ludwig Maximilians-Universität München, Munich, Germany
- Department of Ecology and Biogeography, Nicolaus Copernicus University in Torun, Torun, Poland
| | - Erki Õunap
- Department of Zoology, Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia
| | - Tiit Teder
- Department of Zoology, Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia
- Department of Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Prague-Suchdol, Czech Republic
| | - Toomas Tammaru
- Department of Zoology, Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia
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5
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Pottier P, Noble DWA, Seebacher F, Wu NC, Burke S, Lagisz M, Schwanz LE, Drobniak SM, Nakagawa S. New horizons for comparative studies and meta-analyses. Trends Ecol Evol 2024; 39:435-445. [PMID: 38216408 DOI: 10.1016/j.tree.2023.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/29/2023] [Accepted: 12/08/2023] [Indexed: 01/14/2024]
Abstract
Comparative analyses and meta-analyses are key tools to elucidate broad biological principles, yet the two approaches often appear different in purpose. We propose an integrated approach that can generate deeper insights into ecoevolutionary processes. Marrying comparative and meta-analytic approaches will allow for (i) a more accurate investigation of drivers of biological variation, (ii) a greater ability to account for sources of non-independence in experimental data, (iii) more effective control of publication bias, and (iv) improved transparency and reproducibility. Stronger integration of meta-analytic and comparative studies can also broaden the scope from species-centric investigations to community-level responses and function-valued traits (e.g., reaction norms). We illuminate commonalities, differences, and the transformative potential of combining these methodologies for advancing ecology and evolutionary biology.
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Affiliation(s)
- Patrice Pottier
- Evolution and Ecology Centre, School of Biological, Earth, and Environmental Sciences, University of New South Wales, Sydney, New South Wales, Australia.
| | - Daniel W A Noble
- Division of Ecology and Evolution, Research School of Biology, College of Science, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Frank Seebacher
- School of Life and Environmental Sciences, University of Sydney, Sydney, New South Wales, Australia
| | - Nicholas C Wu
- Hawkesbury Institute for the Environment, Western Sydney University, New South Wales, Australia
| | - Samantha Burke
- Evolution and Ecology Centre, School of Biological, Earth, and Environmental Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Malgorzata Lagisz
- Evolution and Ecology Centre, School of Biological, Earth, and Environmental Sciences, University of New South Wales, Sydney, New South Wales, Australia; Theoretical Sciences Visiting Program, Okinawa Institute of Science and Technology Graduate University, Onna 904-0495, Japan
| | - Lisa E Schwanz
- Evolution and Ecology Centre, School of Biological, Earth, and Environmental Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Szymon M Drobniak
- Evolution and Ecology Centre, School of Biological, Earth, and Environmental Sciences, University of New South Wales, Sydney, New South Wales, Australia; Institute of Environmental Sciences, Jagiellonian University, Krakow, Poland
| | - Shinichi Nakagawa
- Evolution and Ecology Centre, School of Biological, Earth, and Environmental Sciences, University of New South Wales, Sydney, New South Wales, Australia; Theoretical Sciences Visiting Program, Okinawa Institute of Science and Technology Graduate University, Onna 904-0495, Japan
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6
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Gosai KR, Zhou L, Liu Y, Braun EL, Kimball RT, Robinson SK, Jiang A, Goodale E. Investigating flock-associated mimicry: examining the evidence for, and drivers of, plumage mimicry in the greater and lesser necklaced laughingthrush. ROYAL SOCIETY OPEN SCIENCE 2024; 11:230976. [PMID: 38601036 PMCID: PMC11004677 DOI: 10.1098/rsos.230976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 01/29/2024] [Accepted: 02/16/2024] [Indexed: 04/12/2024]
Abstract
Visual mimicry is less understood in birds than in other taxa. The interspecific social dominance mimicry (ISDM) hypothesis asserts that subordinate species resemble dominant ones to reduce aggression. Plumage mimicry has also been consistently noted in mixed-species flocks (MSFs), suggesting a connection to grouping behaviour, although it is unclear whether this is linked to ISDM. We studied greater necklaced laughingthrush (GNLT, Pterorhinus pectoralis) and lesser necklaced laughingthrush (LNLT, Garrulax monileger), which were recently placed in different genera. Measurements of 162 museum specimens showed LNLT converging in sympatry with GNLT in necklace colour, but diverging in necklace to body ratio, with proportionally smaller necklaces. The species were closely associated in six of seven MSF systems from Nepal to China. In a study of foraging behaviour in Nepal, aggression was rare between the species, LNLT followed GNLT and had lower foraging rates when further from GNLT. Our data suggest a link between this MSF-associated mimicry and ISDM, and that the subordinate LNLT may be the mimic and gain more from the resemblance. The species spend much time together in dense and poorly lit vegetation, where the LNLTs resemblance to GNLTs potentially allows them to forage closer to GNLTs than would be otherwise possible.
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Affiliation(s)
- Kamal Raj Gosai
- Guangxi Key Laboratory of Ecology and Conservation, College of Forestry, Guangxi University, Nanning, Guangxi530004, People's Republic of China
- Department of Environmental Science, Tri-Chandra Multiple Campus, Tribhuvan University, Kirtipur, Kathmandu44600, Nepal
| | - Liping Zhou
- Kunming Natural History Museum of Zoology, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan650223, People's Republic of China
| | - Yang Liu
- State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-sen University, Shenzhen, Guangdong518107, People's Republic of China
| | - Edward L. Braun
- Department of Biology, University of Florida, Gainesville, FL32611, USA
| | | | - Scott K. Robinson
- Florida Museum of Natural History, University of Florida, Gainesville, FL32611, USA
| | - Aiwu Jiang
- Guangxi Key Laboratory of Ecology and Conservation, College of Forestry, Guangxi University, Nanning, Guangxi530004, People's Republic of China
| | - Eben Goodale
- Department of Health and Environmental Sciences, Xi’an Jiaotong-Liverpool University, Suzhou, Jiangsu215123, People's Republic of China
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