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Chaverri G, Sandoval-Herrera NI, Iturralde-Pólit P, Romero-Vásquez A, Chaves-Ramírez S, Sagot M. The energetics of social signaling during roost location in Spix's disc-winged bats. J Exp Biol 2021; 224:269327. [PMID: 34226938 DOI: 10.1242/jeb.238279] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 06/15/2021] [Indexed: 11/20/2022]
Abstract
Long-term social aggregations are maintained by multiple mechanisms, including the use of acoustic signals, which may nonetheless entail significant energetic costs. To date, however, no studies have gauged whether there are significant energetic costs to social call production in bats, which heavily rely on acoustic communication for a diversity of social tasks. We measured energetic expenditure during acoustic signaling in Spix's disc-winged bats (Thyroptera tricolor), a species that commonly uses contact calls to locate the ephemeral furled leaves that they use for roosting. To determine the cost of sound production, we measured oxygen consumption using intermittent-flow respirometry methods, with and without social signaling. Our results show that the emission of contact calls significantly increases oxygen consumption; vocal individuals spent, on average, 12.42 kJ more during social signaling trials than they spent during silent trials. We also found that as resting metabolic rate increased in males, there was a decreasing probability that they would emit response calls. These results provide support to the 'allocation model', which predicts that only individuals with lower self-maintenance costs can afford to spend energy in additional activities. Our results provide a step forward in our understanding of how physiology modulates behavior, specifically how the costs of call production and resting metabolic rate may explain the differences in vocal behavior among individuals.
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Affiliation(s)
- Gloriana Chaverri
- Sede del Sur, Universidad de Costa Rica, Golfito, Costa Rica.,Smithsonian Tropical Research Institute, Balboa, Ancón, Panama, Republic of Panama
| | | | | | | | | | - Maria Sagot
- Department of Biological Sciences, State University of New York at Oswego, Oswego, NY 13126-3599, USA
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2
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Liu ZD, Wickham JD, Sun JH. Fighting and aggressive sound determines larger male to win male-male competition in a bark beetle. INSECT SCIENCE 2021; 28:203-214. [PMID: 31944573 DOI: 10.1111/1744-7917.12748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 11/19/2019] [Accepted: 12/16/2019] [Indexed: 06/10/2023]
Abstract
Intrasexual selection occurs in male-male competition over access to females and usually results in the larger male winning. While much research has documented that size matters, little is known about how the larger male wins. Dendroctonus valens is an aggregating monogamous bark beetle in which males have large variation in body size and display intense competition over females. Behavioral observation showed two males fight each other within the gallery by pushing/shoving and stridulated more when two males encountered each other. Experiments using two different-sized males synchronously competing showed that larger males won 95% of contests. Reciprocal displacement experiments using muted and intact males of different or equal size were used to simulate male-male competition. Larger males displaced the smaller resident male in 90% of contests, while smaller males prevailed over larger residents in 6.7% of contests. With both males silenced, larger males displaced smaller males in 80% of contests, while smaller males prevailed in 8% of contests. Further experiments using equal-sized males showed aggressive sound-emitting males displaced muted males in 67% of contests, yet intact males displaced other intact males in only 37.5% of contests. Sound analysis showed sound pressure level is an honest signal of body size and males chose soft sounds over loud aggressive sounds in assays. Therefore, D. valens males have evolved dual behaviors, fighting and aggressive sounds associated with body size, to assess rivals to compete for a partner, gaining insights in male-male competition for this species and for other animals.
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Affiliation(s)
- Zhu-Dong Liu
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing, China
| | - Jacob D Wickham
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing, China
| | - Jiang-Hua Sun
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing, China
- CAS Center for Excellence in Biotic Interactions, Chinese Academy of Sciences, Chaoyang District, Beijing, China
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3
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Boonman A, Rieger I, Amichai E, Greif S, Eitan O, Goldshtein A, Yovel Y. Echolocating bats can adjust sensory acquisition based on internal cues. BMC Biol 2020; 18:166. [PMID: 33167988 PMCID: PMC7654590 DOI: 10.1186/s12915-020-00904-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 10/20/2020] [Indexed: 12/04/2022] Open
Abstract
Background Sensory systems acquire both external and internal information to guide behavior. Adjustments based on external input are much better documented and understood than internal-based sensory adaptations. When external input is not available, idiothetic—internal—cues become crucial for guiding behavior. Here, we take advantage of the rapid sensory adjustments exhibited by bats in order to study how animals rely on internal cues in the absence of external input. Constant frequency echolocating bats are renowned for their Doppler shift compensation response used to adjust their emission frequency in order to optimize sensing. Previous studies documented the importance of external echoes for this response. Results We show that the Doppler compensation system works even without external feedback. Bats experiencing accelerations in an echo-free environment exhibited an intact compensation response. Moreover, using on-board GPS tags on free-flying bats in the wild, we demonstrate that the ability to perform Doppler shift compensation response based on internal cues might be essential in real-life when echo feedback is not available. Conclusions We thus show an ecological need for using internal cues as well as an ability to do so. Our results illustrate the robustness of one particular sensory behavior; however, we suggest this ability to rely on different streams of information (i.e., internal or external) is probably relevant for many sensory behaviors.
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Affiliation(s)
- Arjan Boonman
- School of Zoology, Faculty of Life Sciences, Tel-Aviv University, 6997801, Tel Aviv, Israel
| | - Itai Rieger
- School of Zoology, Faculty of Life Sciences, Tel-Aviv University, 6997801, Tel Aviv, Israel
| | - Eran Amichai
- School of Zoology, Faculty of Life Sciences, Tel-Aviv University, 6997801, Tel Aviv, Israel. .,Ecology, Evolution, Environment and Society Graduate Program, Dartmouth College, Hanover, NH, 03755, USA.
| | - Stefan Greif
- School of Zoology, Faculty of Life Sciences, Tel-Aviv University, 6997801, Tel Aviv, Israel.,Sagol School of Neuroscience, Tel-Aviv University, 6997801, Tel Aviv, Israel
| | - Ofri Eitan
- School of Zoology, Faculty of Life Sciences, Tel-Aviv University, 6997801, Tel Aviv, Israel
| | - Aya Goldshtein
- School of Zoology, Faculty of Life Sciences, Tel-Aviv University, 6997801, Tel Aviv, Israel
| | - Yossi Yovel
- School of Zoology, Faculty of Life Sciences, Tel-Aviv University, 6997801, Tel Aviv, Israel. .,Sagol School of Neuroscience, Tel-Aviv University, 6997801, Tel Aviv, Israel. .,School of Mechanical Engineering, Faculty of Engineering, Tel-Aviv University, 6997801, Tel Aviv, Israel.
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4
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Olsen MN, Surlykke A, Jakobsen L. The sonar beam of Macrophyllum macrophyllum implies ecological adaptation under phylogenetic constraint. J Exp Biol 2020; 223:jeb223909. [PMID: 32398318 DOI: 10.1242/jeb.223909] [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: 02/24/2020] [Accepted: 05/05/2020] [Indexed: 11/20/2022]
Abstract
All animals are adapted to their ecology within the bounds of their evolutionary heritage. Echolocating bats clearly show such adaptations and boundaries through their biosonar call design. Adaptations include not only the overall time-frequency structure, but also the shape of the emitted echolocation beam. Macrophyllum macrophyllum is unique within the phyllostomid family, being the only species to predominantly hunt for insects in the open, on or above water, and as such it presents an interesting case for comparing the impact of phylogeny and ecology as it originates from a family of low-intensity, high-directionality gleaning bats, but occupies a niche dominated by very loud and substantially less-directional bats. Here, we examined the sonar beam pattern of M. macrophyllum in the field and in a flight room and compared it to closely related species with very different feeding ecology and to that of the niche-sharing but distantly related Myotis daubentonii Our results show that M. macrophyllum uses higher source levels and emits less-directional calls than other phyllostomids. In the field, its call directionality is comparable to M. daubentonii, but in the flight room, M. macrophyllum is substantially more directional. Hence our results indicate that ecology influences the emitted call, pushing the bats to emit a louder and broader beam than other phyllostomids, but that phylogeny does limit the emitted intensity and flexibility of the overall beam pattern.
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Affiliation(s)
| | - Annemarie Surlykke
- Department of Biology, University of Southern Denmark, 5230 Odense, Denmark
| | - Lasse Jakobsen
- Department of Biology, University of Southern Denmark, 5230 Odense, Denmark
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5
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Echolocation call frequency and mitochondrial control region variation in the closely related bat species of the genus Rhinolophus (Chiroptera: Rhinolophidae) occurring in Iran: implications for taxonomy and intraspecific phylogeny. MAMMAL RES 2019. [DOI: 10.1007/s13364-019-00417-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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6
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Lattenkamp EZ, Kaiser S, Kaučič R, Großmann M, Koselj K, Goerlitz HR. Environmental acoustic cues guide the biosonar attention of a highly specialised echolocator. ACTA ACUST UNITED AC 2018. [PMID: 29540459 DOI: 10.1242/jeb.165696] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Sensory systems experience a trade-off between maximizing the detail and amount of sampled information. This trade-off is particularly pronounced in sensory systems that are highly specialised for a single task and thus experience limitations in other tasks. We hypothesised that combining sensory input from multiple streams of information may resolve this trade-off and improve detection and sensing reliability. Specifically, we predicted that perceptive limitations experienced by animals reliant on specialised active echolocation can be compensated for by the phylogenetically older and less specialised process of passive hearing. We tested this hypothesis in greater horseshoe bats, which possess morphological and neural specialisations allowing them to identify fluttering prey in dense vegetation using echolocation only. At the same time, their echolocation system is both spatially and temporally severely limited. Here, we show that greater horseshoe bats employ passive hearing to initially detect and localise prey-generated and other environmental sounds, and then raise vocalisation level and concentrate the scanning movements of their sonar beam on the sound source for further investigation with echolocation. These specialised echolocators thus supplement echo-acoustic information with environmental acoustic cues, enlarging perceived space beyond their biosonar range. Contrary to our predictions, we did not find consistent preferences for prey-related acoustic stimuli, indicating the use of passive acoustic cues also for detection of non-prey objects. Our findings suggest that even specialised echolocators exploit a wide range of environmental information, and that phylogenetically older sensory systems can support the evolution of sensory specialisations by compensating for their limitations.
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Affiliation(s)
- Ella Z Lattenkamp
- Acoustic and Functional Ecology Group, Max Planck Institute for Ornithology, Seewiesen 83219, Germany
| | - Samuel Kaiser
- Acoustic and Functional Ecology Group, Max Planck Institute for Ornithology, Seewiesen 83219, Germany
| | - Rožle Kaučič
- Acoustic and Functional Ecology Group, Max Planck Institute for Ornithology, Seewiesen 83219, Germany
| | - Martina Großmann
- Acoustic and Functional Ecology Group, Max Planck Institute for Ornithology, Seewiesen 83219, Germany
| | - Klemen Koselj
- Acoustic and Functional Ecology Group, Max Planck Institute for Ornithology, Seewiesen 83219, Germany
| | - Holger R Goerlitz
- Acoustic and Functional Ecology Group, Max Planck Institute for Ornithology, Seewiesen 83219, Germany
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7
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Russo D, Ancillotto L, Jones G. Bats are still not birds in the digital era: echolocation call variation and why it matters for bat species identification. CAN J ZOOL 2018. [DOI: 10.1139/cjz-2017-0089] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The recording and analysis of echolocation calls are fundamental methods used to study bat distribution, ecology, and behavior. However, the goal of identifying bats in flight from their echolocation calls is not always possible. Unlike bird songs, bat calls show large variation that often makes identification challenging. The problem has not been fully overcome by modern digital-based hardware and software for bat call recording and analysis. Besides providing fundamental insights into bat physiology, ecology, and behavior, a better understanding of call variation is therefore crucial to best recognize limits and perspectives of call classification. We provide a comprehensive overview of sources of interspecific and intraspecific echolocation call variations, illustrating its adaptive significance and highlighting gaps in knowledge. We remark that further research is needed to better comprehend call variation and control for it more effectively in sound analysis. Despite the state-of-art technology in this field, combining acoustic surveys with capture and roost search, as well as limiting identification to species with distinctive calls, still represent the safest way of conducting bat surveys.
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Affiliation(s)
- Danilo Russo
- Wildlife Research Unit, Dipartimento di Agraria, Università degli Studi di Napoli Federico II, 80055 Portici, Italy
- School of Biological Sciences, University of Bristol, Bristol BS8 1TQ, United Kingdom
| | - Leonardo Ancillotto
- Wildlife Research Unit, Dipartimento di Agraria, Università degli Studi di Napoli Federico II, 80055 Portici, Italy
| | - Gareth Jones
- School of Biological Sciences, University of Bristol, Bristol BS8 1TQ, United Kingdom
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8
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Maluleke T, Jacobs DS, Winker H. Environmental correlates of geographic divergence in a phenotypic trait: A case study using bat echolocation. Ecol Evol 2017; 7:7347-7361. [PMID: 28944021 PMCID: PMC5606872 DOI: 10.1002/ece3.3251] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 06/01/2017] [Accepted: 06/28/2017] [Indexed: 12/19/2022] Open
Abstract
Divergence in phenotypic traits may arise from the interaction of different evolutionary forces, including different kinds of selection (e.g., ecological), genetic drift, and phenotypic plasticity. Sensory systems play an important role in survival and reproduction, and divergent selection on such systems may result in lineage diversification. Such diversification could be largely influenced by selection in different environments as a result of isolation by environment (IbE). We investigated this process using geographic variation in the resting echolocation frequency of the horseshoe bat species, Rhinolophus damarensis, as a test case. Bats were sampled along a latitudinal gradient ranging from 16°S to 32°S in the arid western half of southern Africa. We measured body size and peak resting frequencies (RF) from handheld individual bats. Three hypotheses for the divergence in RF were tested: (1) James' Rule, (2) IbE, and (3) genetic drift through isolation by distance (IbD) to isolate the effects of body size, local climatic conditions, and geographic distance, respectively, on the resting frequency of R. damarensis. Our results did not support genetic drift because there was no correlation between RF variation and geographic distance. Our results also did not support James' Rule because there was no significant relationship between (1) geographic distances and RF, (2) body size and RF, or (3) body size and climatic variables. Instead, we found support for IbE in the form of a correlation between RF and both region and annual mean temperature, suggesting that RF variation may be the result of environmental discontinuities. The environmental discontinuities coincided with previously reported genetic divergence. Climatic gradients in conjunction with environmental discontinuities could lead to local adaptation in sensory signals and directed dispersal such that gene flow is restricted, allowing lineages to diverge. However, our study cannot exclude the role of processes like phenotypic plasticity in phenotypic variation.
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Affiliation(s)
- Tinyiko Maluleke
- Department of Biological Sciences Animal Evolution and Systematics Group (AES) University of Cape Town Cape Town South Africa
| | - David S Jacobs
- Department of Biological Sciences Animal Evolution and Systematics Group (AES) University of Cape Town Cape Town South Africa
| | - Henning Winker
- Centre for Statistics in Ecology Environmental and Conservation (SEEC) South African National Biodiversity Institute Cape Town South Africa
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9
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Liu JP, Ma LK, Zhang ZQ, Gu DH, Wang JJ, Li JJ, Gao LJ, Hou JH. Maximum frequency of songs reflects body size among male dusky warblers Phylloscopus fuscatus (Passeriformes: Phylloscopidae). EUROPEAN ZOOLOGICAL JOURNAL 2017. [DOI: 10.1080/24750263.2017.1301578] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- J. P. Liu
- College of Life Science, Hebei University, PR China
- College of Life Science, Hainan Normal University, PR China
- College of Life Science, Hebei Agricultural University, PR China
| | - L. K. Ma
- College of Life Science, Hainan Normal University, PR China
| | - Z. Q. Zhang
- College of Life Science, Hebei University, PR China
| | - D. H. Gu
- College of Life Science, Hebei University, PR China
| | - J. J. Wang
- College of Life Science, Hebei University, PR China
| | - J. J. Li
- College of Life Science, Hebei Agricultural University, PR China
| | - L. J. Gao
- College of Life Science, Hebei Agricultural University, PR China
| | - J. H. Hou
- College of Life Science, Hebei University, PR China
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10
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Liu Z, Xu B, Guo Y, Raffa KF, Sun J. Gallery and acoustic traits related to female body size mediate male mate choice in a bark beetle. Anim Behav 2017. [DOI: 10.1016/j.anbehav.2017.01.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Mutumi GL, Jacobs DS, Winker H. Sensory Drive Mediated by Climatic Gradients Partially Explains Divergence in Acoustic Signals in Two Horseshoe Bat Species, Rhinolophus swinnyi and Rhinolophus simulator. PLoS One 2016; 11:e0148053. [PMID: 26815436 PMCID: PMC4729529 DOI: 10.1371/journal.pone.0148053] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Accepted: 01/11/2016] [Indexed: 11/18/2022] Open
Abstract
Geographic variation can be an indicator of still poorly understood evolutionary processes such as adaptation and drift. Sensory systems used in communication play a key role in mate choice and species recognition. Habitat-mediated (i.e. adaptive) differences in communication signals may therefore lead to diversification. We investigated geographic variation in echolocation calls of African horseshoe bats, Rhinolophus simulator and R. swinnyi in the context of two adaptive hypotheses: 1) James’ Rule and 2) the Sensory Drive Hypothesis. According to James’ Rule body-size should vary in response to relative humidity and temperature so that divergence in call frequency may therefore be the result of climate-mediated variation in body size because of the correlation between body size and call frequency. The Sensory Drive Hypothesis proposes that call frequency is a response to climate-induced differences in atmospheric attenuation and predicts that increases in atmospheric attenuation selects for calls of lower frequency. We measured the morphology and resting call frequency (RF) of 111 R. simulator and 126 R. swinnyi individuals across their distributional range to test the above hypotheses. Contrary to the prediction of James’ Rule, divergence in body size could not explain the variation in RF. Instead, acoustic divergence in RF was best predicted by latitude, geography and climate-induced differences in atmospheric attenuation, as predicted by the Sensory Drive Hypothesis. Although variation in RF was strongly influenced by temperature and humidity, other climatic variables (associated with latitude and altitude) as well as drift (as suggested by a positive correlation between call variation and geographic distance, especially in R. simulator) may also play an important role.
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Affiliation(s)
- Gregory L. Mutumi
- Animal Evolution and Systematics Group (AES), Biological Sciences Department, University of Cape Town, Cape Town 7701, South Africa
- * E-mail: (GLM); (DSJ)
| | - David S. Jacobs
- Animal Evolution and Systematics Group (AES), Biological Sciences Department, University of Cape Town, Cape Town 7701, South Africa
- * E-mail: (GLM); (DSJ)
| | - Henning Winker
- Centre for Statistics in Ecology, Environment and Conservation (SEEC), South African National Biodiversity Institute (SANBI), Cape Town, South Africa
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13
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Grilliot ME, Burnett SC, Mendonça MT. Choice Experiments Demonstrate that Male Big Brown Bats (Eptesicus fuscus) Prefer Echolocation Calls of High Copulatory Females. ACTA CHIROPTEROLOGICA 2015. [DOI: 10.3161/15081109acc2015.17.2.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Grilliot ME, Burnett SC, Mendonça MT. Sex and Season Differences in the Echolocation Pulses of Big Brown Bats (Eptesicus fuscus) and Their Relation to Mating Activity. ACTA CHIROPTEROLOGICA 2014. [DOI: 10.3161/150811014x687332] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Russo D, Di Febbraro M, Rebelo H, Mucedda M, Cistrone L, Agnelli P, De Pasquale PP, Martinoli A, Scaravelli D, Spilinga C, Bosso L. What story does geographic separation of insular bats tell? A case study on Sardinian rhinolophids. PLoS One 2014; 9:e110894. [PMID: 25340737 PMCID: PMC4207767 DOI: 10.1371/journal.pone.0110894] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 09/17/2014] [Indexed: 11/24/2022] Open
Abstract
Competition may lead to changes in a species’ environmental niche in areas of sympatry and shifts in the niche of weaker competitors to occupy areas where stronger ones are rarer. Although mainland Mediterranean (Rhinolophus euryale) and Mehely’s (R. mehelyi) horseshoe bats mitigate competition by habitat partitioning, this may not be true on resource-limited systems such as islands. We hypothesize that Sardinian R. euryale (SAR) have a distinct ecological niche suited to persist in the south of Sardinia where R. mehelyi is rarer. Assuming that SAR originated from other Italian populations (PES) – mostly allopatric with R. mehelyi – once on Sardinia the former may have undergone niche displacement driven by R. mehelyi. Alternatively, its niche could have been inherited from a Maghrebian source population. We: a) generated Maxent Species Distribution Models (SDM) for Sardinian populations; b) calibrated a model with PES occurrences and projected it to Sardinia to see whether PES niche would increase R. euryale’s sympatry with R. mehelyi; and c) tested for niche similarity between R. mehelyi and PES, PES and SAR, and R. mehelyi and SAR. Finally we predicted R. euryale’s range in Northern Africa both in the present and during the Last Glacial Maximum (LGM) by calibrating SDMs respectively with SAR and PES occurrences and projecting them to the Maghreb. R. mehelyi and PES showed niche similarity potentially leading to competition. According to PES’ niche, R. euryale would show a larger sympatry with R. mehelyi on Sardinia than according to SAR niche. Such niches have null similarity. The current and LGM Maghrebian ranges of R. euryale were predicted to be wide according to SAR’s niche, negligible according to PES’ niche. SAR’s niche allows R. euryale to persist where R. mehelyi is rarer and competition probably mild. Possible explanations may be competition-driven niche displacement or Maghrebian origin.
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Affiliation(s)
- Danilo Russo
- Wildlife Research Unit, Dipartimento di Agraria, Università degli Studi di Napoli Federico II, Portici, Napoli, Italy
- School of Biological Sciences, University of Bristol, Bristol, United Kingdom
- * E-mail:
| | - Mirko Di Febbraro
- EnvixLab, Dipartimento Bioscienze e Territorio, Università del Molise, Pesche, Italy
| | - Hugo Rebelo
- School of Biological Sciences, University of Bristol, Bristol, United Kingdom
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos da Universidade do Porto, University of Porto, Vairão, Portuga
| | - Mauro Mucedda
- Centro per lo studio e la protezione dei pipistrelli in Sardegna, Sassari, Italy
| | - Luca Cistrone
- Forestry and Conservation, Cassino, Frosinone, Italy
| | - Paolo Agnelli
- Museo di Storia Naturale dell’Università di Firenze, Sezione di Zoologia ‘La Specola’, Firenze, Italy
| | | | - Adriano Martinoli
- Unità di Analisi e Gestione delle Risorse Ambientali, Guido Tosi Research Group, Dipartimento di Scienze Teoriche e Applicate, Università degli Studi dell’Insubria, Varese, Italy
| | - Dino Scaravelli
- Dipartimento di Scienze Mediche Veterinarie, Università degli Studi di Bologna, Ozzano dell’Emilia, Bologna, Italy
| | | | - Luciano Bosso
- Wildlife Research Unit, Dipartimento di Agraria, Università degli Studi di Napoli Federico II, Portici, Napoli, Italy
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16
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Puechmaille SJ, Borissov IM, Zsebok S, Allegrini B, Hizem M, Kuenzel S, Schuchmann M, Teeling EC, Siemers BM. Female mate choice can drive the evolution of high frequency echolocation in bats: a case study with Rhinolophus mehelyi. PLoS One 2014; 9:e103452. [PMID: 25075972 PMCID: PMC4116191 DOI: 10.1371/journal.pone.0103452] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Accepted: 06/28/2014] [Indexed: 12/04/2022] Open
Abstract
Animals employ an array of signals (i.e. visual, acoustic, olfactory) for communication. Natural selection favours signals, receptors, and signalling behaviour that optimise the received signal relative to background noise. When the signal is used for more than one function, antagonisms amongst the different signalling functions may constrain the optimisation of the signal for any one function. Sexual selection through mate choice can strongly modify the effects of natural selection on signalling systems ultimately causing maladaptive signals to evolve. Echolocating bats represent a fascinating group in which to study the evolution of signalling systems as unlike bird songs or frog calls, echolocation has a dual role in foraging and communication. The function of bat echolocation is to generate echoes that the calling bat uses for orientation and food detection with call characteristics being directly related to the exploitation of particular ecological niches. Therefore, it is commonly assumed that echolocation has been shaped by ecology via natural selection. Here we demonstrate for the first time using a novel combined behavioural, ecological and genetic approach that in a bat species, Rhinolophus mehelyi: (1) echolocation peak frequency is an honest signal of body size; (2) females preferentially select males with high frequency calls during the mating season; (3) high frequency males sire more off-spring, providing evidence that echolocation calls may play a role in female mate choice. Our data refute the sole role of ecology in the evolution of echolocation and highlight the antagonistic interplay between natural and sexual selection in shaping acoustic signals.
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Affiliation(s)
- Sébastien J. Puechmaille
- Sensory Ecology Group, Max Planck Institute for Ornithology, Seewiesen, Germany
- School of Biology & Environmental Science, University College Dublin, Belfield, Dublin, Ireland
- Tabachka Bat Research Station, Tabachka, Bulgaria
- * E-mail:
| | - Ivailo M. Borissov
- Sensory Ecology Group, Max Planck Institute for Ornithology, Seewiesen, Germany
- Tabachka Bat Research Station, Tabachka, Bulgaria
| | - Sándor Zsebok
- Sensory Ecology Group, Max Planck Institute for Ornithology, Seewiesen, Germany
- Tabachka Bat Research Station, Tabachka, Bulgaria
- MTA-ELTE-MTM Ecology Research Group, Budapest, Hungary
| | | | - Mohammed Hizem
- Tunis Superior Institute for Biological Applied Sciences, Tunis, Tunisia
| | - Sven Kuenzel
- Department Evolutionary Genetics, Max Planck Institute for Evolutionary Biology, Plön, Germany
| | - Maike Schuchmann
- Sensory Ecology Group, Max Planck Institute for Ornithology, Seewiesen, Germany
- Tabachka Bat Research Station, Tabachka, Bulgaria
| | - Emma C. Teeling
- School of Biology & Environmental Science, University College Dublin, Belfield, Dublin, Ireland
| | - Björn M. Siemers
- Sensory Ecology Group, Max Planck Institute for Ornithology, Seewiesen, Germany
- Tabachka Bat Research Station, Tabachka, Bulgaria
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Body size as an important factor determining trophic niche partitioning in three syntopic rhinolophid bat species. Biologia (Bratisl) 2012. [DOI: 10.2478/s11756-012-0139-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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