1
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Valencia-Aguilar A, Ringler E, Lüpold S, Guayasamin JM, Prado CPA. Evolutionary trade-offs between testes size and parenting in Neotropical glassfrogs. Proc Biol Sci 2024; 291:20240054. [PMID: 38351799 PMCID: PMC10865008 DOI: 10.1098/rspb.2024.0054] [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: 01/08/2024] [Accepted: 01/18/2024] [Indexed: 02/16/2024] Open
Abstract
In males, large testes size signifies high sperm production and is commonly linked to heightened sperm competition levels. It may also evolve as a response to an elevated risk of sperm depletion due to multiple mating or large clutch sizes. Conversely, weapons, mate or clutch guarding may allow individuals to monopolize mating events and preclude sperm competition, thereby reducing the selection of large testes. Herein, we examined how paternal care, sexual size dimorphism (SSD), weaponry and female fecundity are linked to testes size in glassfrogs. We found that paternal care was associated with a reduction in relative testes size, suggesting an evolutionary trade-off between testes size and parenting. Although females were slightly larger than males and species with paternal care tended to have larger clutches, there was no significant relationship between SSD, clutch size and relative testes size. These findings suggest that the evolution of testes size in glassfrogs is influenced by sperm competition risk, rather than sperm depletion risk. We infer that clutch guarding precludes the risk of fertilization by other males and consequently diminishes selective pressure for larger testes. Our study highlights the prominent role of paternal care in the evolution of testes size in species with external fertilization.
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Affiliation(s)
- Anyelet Valencia-Aguilar
- Pós-Graduação em Ecologia, Evolução e Biodiversidade, Instituto de Biociências, São Paulo State University (Unesp), Rio Claro, São Paulo 13506-900, Brazil
- Division of Behavioural Ecology, Institute of Ecology and Evolution, University of Bern, 3032 Bern, Switzerland
| | - Eva Ringler
- Division of Behavioural Ecology, Institute of Ecology and Evolution, University of Bern, 3032 Bern, Switzerland
| | - Stefan Lüpold
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, 8057 Zurich, Switzerland
| | - Juan M. Guayasamin
- Instituto Biósfera USFQ, Laboratorio de Biología Evolutiva, Universidad San Francisco de Quito USFQ Cumbayá, Quito, Ecuador
| | - Cynthia P. A. Prado
- Pós-Graduação em Ecologia, Evolução e Biodiversidade, Instituto de Biociências, São Paulo State University (Unesp), Rio Claro, São Paulo 13506-900, Brazil
- Departamento de Morfologia e Fisiologia Animal, FCAV, São Paulo State University (Unesp), Jaboticabal, São Paulo 14884-900, Brazil
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2
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Barbosa Fontana R, Both C, Hartz SM. Direct development in Atlantic Forest anurans: What can environmental and biotic influences explain about its evolution and occurrence? PLoS One 2023; 18:e0291644. [PMID: 38032887 PMCID: PMC10688756 DOI: 10.1371/journal.pone.0291644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 09/04/2023] [Indexed: 12/02/2023] Open
Abstract
Different environmental and biological factors can originate and support different alternative life histories in different taxonomic groups. Likewise, these factors are important for the processes that assemble and structure communities. Amphibians, besides being highly susceptible to environmental conditions, have various reproductive strategies, such as the direct development of individuals. Several hypotheses have been raised about possible selective pressures related to the emergence of direct development in anurans, as well as the relationship between environmental characteristics and the occurrence of these species. Such investigations, however, have mainly focused on specific clades and/or regions. Here, we use structural equation modelling to investigate the relationships between different abiotic (temperature, precipitation, humidity, and terrain slope) and biotic (phylogenetic composition and functional diversity) factors and the proportion of species with direct development in 766 anuran communities of the Atlantic Forest, a biome with a vast diversity of anuran species and high environmental complexity. Anuran communities with higher proportions of direct developing species were found to be mainly influenced by low potential evapotranspiration, low temperature seasonality, and high functional diversity. Phylogenetic composition and terrain slope were also found to be important in determining the occurrence of these species in Atlantic Forest communities. These results show the importance of these factors in the structuring of these communities and provide important contributions to the knowledge of direct development in anurans.
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Affiliation(s)
- Rodrigo Barbosa Fontana
- Instituto de Biociências, Programa de Pós-Graduação em Ecologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Camila Both
- Departamento Interdisciplinar, Centro de Estudos Limnológicos e Marinhos, Universidade Federal do Rio Grande do Sul, Imbé, Rio Grande do Sul, Brazil
| | - Sandra Maria Hartz
- Instituto de Biociências, Programa de Pós-Graduação em Ecologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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3
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Ringler E, Rojas B, Stynoski JL, Schulte LM. What Amphibians Can Teach Us About the Evolution of Parental Care. ANNUAL REVIEW OF ECOLOGY, EVOLUTION, AND SYSTEMATICS 2023; 54:43-62. [PMID: 38989250 PMCID: PMC7616154 DOI: 10.1146/annurev-ecolsys-102221-050519] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
Parenting is considered a key evolutionary innovation that contributed to the diversification and expansion of vertebrates. However, we know little about how such diversity evolved. Amphibians are an ideal group in which to identify the ecological factors that have facilitated or constrained the evolution of different forms of parental care. Among, but also within, the three amphibian orders-Anura, Caudata, and Gymnophiona-there is a high level of variation in habitat use, fertilization mode, mating systems, and parental sex roles. Recent work using broad phylogenetic, experimental, and physiological approaches has helped to uncover the factors that have selected for the evolution of care and transitions between different forms of parenting. Here, we highlight the exceptional diversity of amphibian parental care, emphasize the unique opportunities this group offers for addressing key questions about the evolution of parenting, and give insights into promising novel directions of research.
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Affiliation(s)
- Eva Ringler
- Division of Behavioural Ecology, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland
| | - Bibiana Rojas
- Department of Interdisciplinary Life Sciences, Konrad Lorenz Institute of Ethology, University of Veterinary Medicine Vienna, Vienna, Austria
- Department of Biology and Environmental Science, University of Jyväskylä, Jyväskylä, Finland
| | | | - Lisa M Schulte
- Faculty of Biological Sciences, Goethe University Frankfurt, Frankfurt am Main, Germany
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4
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The evolution of reproductive modes and life cycles in amphibians. Nat Commun 2022; 13:7039. [PMID: 36396632 PMCID: PMC9672123 DOI: 10.1038/s41467-022-34474-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 10/26/2022] [Indexed: 11/18/2022] Open
Abstract
Amphibians have undergone important evolutionary transitions in reproductive modes and life-cycles. We compare large-scale macroevolutionary patterns in these transitions across the three major amphibian clades: frogs, salamanders, and caecilians. We analyse matching reproductive and phylogenetic data for 4025 species. We find that having aquatic larvae is ancestral for all three groups and is retained by many extant species (33-44%). The most frequent transitions in each group are to relatively uncommon states: live-bearing in caecilians, paedomorphosis in salamanders, and semi-terrestriality in frogs. All three groups show transitions to more terrestrial reproductive modes, but only in caecilians have these evolved sequentially from most-to-least aquatic. Diversification rates are largely independent of reproductive modes. However, in salamanders direct development accelerates diversification whereas paedomorphosis decreases it. Overall, we find a widespread retention of ancestral modes, decoupling of trait transition rates from patterns of species richness, and the general independence of reproductive modes and diversification.
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5
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Pašukonis A, Serrano-Rojas SJ, Fischer MT, Loretto MC, Shaykevich DA, Rojas B, Ringler M, Roland AB, Marcillo-Lara A, Ringler E, Rodríguez C, Coloma LA, O'Connell LA. Contrasting parental roles shape sex differences in poison frog space use but not navigational performance. eLife 2022; 11:e80483. [PMID: 36377473 PMCID: PMC9665844 DOI: 10.7554/elife.80483] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 10/25/2022] [Indexed: 11/16/2022] Open
Abstract
Sex differences in vertebrate spatial abilities are typically interpreted under the adaptive specialization hypothesis, which posits that male reproductive success is linked to larger home ranges and better navigational skills. The androgen spillover hypothesis counters that enhanced male spatial performance may be a byproduct of higher androgen levels. Animal groups that include species where females are expected to outperform males based on life-history traits are key for disentangling these hypotheses. We investigated the association between sex differences in reproductive strategies, spatial behavior, and androgen levels in three species of poison frogs. We tracked individuals in natural environments to show that contrasting parental sex roles shape sex differences in space use, where the sex performing parental duties shows wider-ranging movements. We then translocated frogs from their home areas to test their navigational performance and found that the caring sex outperformed the non-caring sex only in one out of three species. In addition, males across species displayed more explorative behavior than females and androgen levels correlated with explorative behavior and homing accuracy. Overall, we reveal that poison frog reproductive strategies shape movement patterns but not necessarily navigational performance. Together this work suggests that prevailing adaptive hypotheses provide an incomplete explanation of sex differences in spatial abilities.
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Affiliation(s)
- Andrius Pašukonis
- Institute of Biosciences, Vilnius University Life Sciences CenterVilniusLithuania
- CEFE, Univ MontpellierMontpellierFrance
- Department of Biology, Stanford UniversityStanfordUnited States
| | - Shirley Jennifer Serrano-Rojas
- Department of Biology, Stanford UniversityStanfordUnited States
- Universidad Nacional de San Antonio Abad del CuscoCuscoPeru
| | | | - Matthias-Claudio Loretto
- Technical University of Munich, TUM School of Life Sciences, Ecosystem Dynamics and Forest Management, Hans-Carl-von-Carlowitz-PlatzFreisingGermany
- Berchtesgaden National Park, DoktorbergBerchtesgadenGermany
| | | | - Bibiana Rojas
- Department of Interdisciplinary Life Sciences, Konrad Lorenz Institute of Ethology, University of Veterinary Medicine ViennaViennaAustria
- Department of Biology and Environmental Science, University of JyväskyläJyväskyläFinland
| | - Max Ringler
- Division of Behavioural Ecology, Institute of Ecology and Evolution, University of BernHinterkappelenSwitzerland
- Institute of Electronic Music and Acoustics, University of Music and Performing Arts GrazGrazAustria
- Department of Behavioral and Cognitive Biology, University of ViennaViennaAustria
- Department of Evolutionary Biology, University of ViennaViennaAustria
| | - Alexandre B Roland
- Research Center on Animal Cognition, Center for Integrative Biology, CNRS - Paul Sabatier UniversityToulouseFrance
| | - Alejandro Marcillo-Lara
- Department of Integrative Biology, Oklahoma State UniversityStillwaterUnited States
- Centro Jambatu de Investigación y Conservación de AnfibiosQuitoEcuador
| | - Eva Ringler
- Division of Behavioural Ecology, Institute of Ecology and Evolution, University of BernHinterkappelenSwitzerland
- Messerli Research Institute, University of Veterinary Medicine ViennaViennaAustria
| | - Camilo Rodríguez
- Department of Behavioral and Cognitive Biology, University of ViennaViennaAustria
| | - Luis A Coloma
- Centro Jambatu de Investigación y Conservación de AnfibiosQuitoEcuador
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6
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The evolution of parental care in salamanders. Sci Rep 2022; 12:16655. [PMID: 36198742 PMCID: PMC9535019 DOI: 10.1038/s41598-022-20903-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 09/20/2022] [Indexed: 11/22/2022] Open
Abstract
Complex parenting has been proposed to contribute to the evolutionary success of vertebrates. However, the evolutionary routes to complex parenting and the role of parenting in vertebrate diversity are still contentious. Although basal vertebrates provide clues to complex reproduction, these are often understudied. Using 181 species that represent all major lineages of an early vertebrate group, the salamanders and newts (Caudata, salamanders henceforth) here we show that fertilisation mode is tied to parental care: male-only care occurs in external fertilisers, whereas female-only care exclusively occurs in internal fertilisers. Importantly, internal fertilisation opens the way to terrestrial reproduction, because fertilised females are able to deposit their eggs on land, and with maternal care provision, the eggs could potentially develop outside the aquatic environment. Taken together, our results of a semi-aquatic early vertebrate group propose that the diversity and follow-up radiation of terrestrial vertebrates are inherently associated with a complex social behaviour, parenting.
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7
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Cândido CER, Del-Prette ACH, Brandão RA. Reproductive biology of the phyllomedusid frog Pithecopus oreades (Brandão 2002), a Cerrado endemic species related to altitude streams. STUDIES ON NEOTROPICAL FAUNA AND ENVIRONMENT 2022. [DOI: 10.1080/01650521.2022.2129336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Carlos E. R. Cândido
- Departamento de Engenharia Florestal (UnB/EFL), Universidade de Brasília, Brasília, Brazil
| | - Ana C. H. Del-Prette
- Departamento de Engenharia Florestal (UnB/EFL), Universidade de Brasília, Brasília, Brazil
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8
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Bordin RO, Dos Santos Fernandes CE, Franco-Belussi L, Ribeiro Farias Leão T, Sanabria M. Sperm morphology and testicular histology of the polyandric species Leptodactylus podicipinus (Anura: Leptodactylidae) from an urban environment. Anat Rec (Hoboken) 2022; 305:3532-3542. [PMID: 35365960 DOI: 10.1002/ar.24928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 03/15/2022] [Accepted: 03/15/2022] [Indexed: 11/11/2022]
Abstract
Anurans have a high reproductive diversity, which is closely associated with testicular dynamics and sperm production. This variety in reproduction is modulated by the sexual characteristics of reproductive strategies, such as polyandry. Leptodactylus podicipinus has high reproductive plasticity, wide geographical distribution, and polyandric behavior. Although aspects of the testes and sperm of this species are known, knowledge about the relationship between these aspects and reproductive investment is scarce. The present study evaluated the morphological characteristics of the testes and sperm in an urban environment. We used 11 sexually mature males from the city of Campo Grande, Mato Grosso do Sul, Brazil. The specimens were obtained from night excursions between April and September; the months that constitute the post-rainy season. The biometric data (snout-vent length, testes, and body mass) were associated with sperm parameters (length of the spermatozoon head and tail). Stereological analyses of sperm morphology and the testes were performed. The results showed correlations between testis mass and spermatozoon length, which were positively related to head length and negatively related to tail length. The locular area and tail length were also negatively correlated. The percentage of normal spermatozoa was 97%; however, some sperm heads and tails exhibited different morphologies from the pattern described for the species. The germinative structure comprised more than 50% of the locular area composed of spermatozoa. The results of this study contribute to the knowledge of aspects related to the reproductive biology of L. podicipinus obtained from an urban environment.
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Affiliation(s)
- Rafael Oliveira Bordin
- Programa de pós graduação em Biologia Animal, Universidade Federal de Mato Grosso do Sul, 79070-900, Campo Grande, MS, Brasil
| | - Carlos Eurico Dos Santos Fernandes
- Laboratório de Patologia Experimental (LAPEx), Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brasil
| | - Lilian Franco-Belussi
- Laboratório de Patologia Experimental (LAPEx), Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brasil
| | - Taynara Ribeiro Farias Leão
- Programa de pós graduação em Biodiversidade, Universidade Estadual Paulista, São José do Rio Preto, SP, Brasil
| | - Marciana Sanabria
- Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, 79070-900, Campo Grande, Brasil
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9
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Cheron M, Costantini D, Brischoux F. Nicosulfuron, a sulfonylurea herbicide, alters embryonic development and oxidative status of hatchlings at environmental concentrations in an amphibian species. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 232:113277. [PMID: 35123186 DOI: 10.1016/j.ecoenv.2022.113277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/27/2022] [Accepted: 01/30/2022] [Indexed: 06/14/2023]
Abstract
The widespread use of agrochemicals for controlling pests and diseases of crops is recognized as a main threat to biodiversity. Sulfonylurea herbicides are being increasingly used and display low levels of degradation in water which suggest that they might affect non-target organisms. In a common garden experiment, eggs of a widespread amphibian (Bufo spinosus) were exposed to sublethal environmentally relevant concentrations of a widely used sulfonylurea herbicide, nicosulfuron, during the whole embryonic development. We assessed development-related traits (i.e., development duration, hatching success, hatchling size and occurrence of malformation) as well as antioxidant markers in response to contamination (i.e., SOD, GPx, catalase, thiols and relevant ratios thereof). We found that sublethal concentrations of nicosulfuron increased embryonic development duration, increased hatchling size and tended to increase malformations. Embryos exposed to nicosulfuron displayed decreased thiols and increased catalase activity suggesting alteration of oxidative status. We did not find any effect of nicosulfuron on SOD and GPx levels. Interestingly, higher catalase activity was linked to higher proportion of malformed individuals, suggesting that exposure to nicosulfuron induced teratogenic effects. Our results suggest that alteration of antioxidant levels might be one physiological mechanism through which nicosulfuron might cause detrimental effects on amphibian embryos. Sublethal effects of pesticides at environmentally relevant concentrations have been overlooked and require further investigations, especially in non-target taxa occurring in agricultural landscapes.
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Affiliation(s)
- Marion Cheron
- Centre d'Études Biologiques de Chizé, CEBC-CNRS UMR 7372, 79360 Villiers en Bois, France.
| | - David Costantini
- Unité Physiologie Moléculaire et Adaptation (PhyMA), UMR 7221 Muséum National d'Histoire Naturelle, CNRS, CP32, 7 Rue Cuvier, Paris, France
| | - François Brischoux
- Centre d'Études Biologiques de Chizé, CEBC-CNRS UMR 7372, 79360 Villiers en Bois, France
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10
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Gould J, Beranek C, Valdez J, Mahony M. Quantity
versus
quality: A balance between egg and clutch size among Australian amphibians in relation to other life‐history variables. AUSTRAL ECOL 2022. [DOI: 10.1111/aec.13154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- John Gould
- Conservation Science Research Group, School of Environmental and Life Sciences University of Newcastle Callaghan New South Wales 2308 Australia
| | - Chad Beranek
- Conservation Science Research Group, School of Environmental and Life Sciences University of Newcastle Callaghan New South Wales 2308 Australia
- FAUNA Research Alliance PO Box 5092, Kahibah New South Wales 2290 Australia
| | - Jose Valdez
- Department of Bioscience – Kalø Aarhus University Grenåvej 14, 8410 Rønde Denmark
| | - Michael Mahony
- Conservation Science Research Group, School of Environmental and Life Sciences University of Newcastle Callaghan New South Wales 2308 Australia
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11
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Méndez‐Narváez J, Warkentin KM. Reproductive colonization of land by frogs: Embryos and larvae excrete urea to avoid ammonia toxicity. Ecol Evol 2022; 12:e8570. [PMID: 35222954 PMCID: PMC8843769 DOI: 10.1002/ece3.8570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 12/30/2021] [Accepted: 01/05/2022] [Indexed: 11/24/2022] Open
Abstract
Vertebrate colonization of land has occurred multiple times, including over 50 origins of terrestrial eggs in frogs. Some environmental factors and phenotypic responses that facilitated these transitions are known, but responses to water constraints and risk of ammonia toxicity during early development are poorly understood. We tested if ammonia accumulation and dehydration risk induce a shift from ammonia to urea excretion during early stages of four anurans, from three origins of terrestrial development. We quantified ammonia and urea concentrations during early development on land, under well‐hydrated and dry conditions. Where we found urea excretion, we tested for a plastic increase under dry conditions and with ammonia accumulation in developmental environments. We assessed the potential adaptive role of urea excretion by comparing ammonia tolerance measured in 96h‐LC50 tests with ammonia levels in developmental environments. Ammonia accumulated in foam nests and perivitelline fluid, increasing over development and reaching higher concentrations under dry conditions. All four species showed high ammonia tolerance, compared to fishes and aquatic‐breeding frogs. Both nest‐dwelling larvae of Leptodactylus fragilis and late embryos of Hyalinobatrachium fleischmanni excreted urea, showing a plastic increase under dry conditions. These two species can develop the longest on land and urea excretion appears adaptive, preventing their exposure to potentially lethal levels of ammonia. Neither late embryos of Agalychnis callidryas nor nest‐dwelling larvae of Engystomops pustulosus experienced toxic ammonia levels under dry conditions, and neither excreted urea. Our results suggest that an early onset of urea excretion, its increase under dry conditions, and elevated ammonia tolerance can all help prevent ammonia toxicity during terrestrial development. High ammonia represents a general risk for development which may be exacerbated as climate change increases dehydration risk for terrestrial‐breeding frogs. It may also be a cue that elicits adaptive physiological responses during early development.
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Affiliation(s)
- Javier Méndez‐Narváez
- Department of Biology Boston University Boston Massachusetts USA
- Calima Fundación para la Investigación de la Biodiversidad y Conservación en el Trópico Cali Colombia
| | - Karen M. Warkentin
- Department of Biology Boston University Boston Massachusetts USA
- Smithsonian Tropical Research Institute Panama Republic of Panama
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12
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Beranek CT, Clulow J, Mahony M. Genetic evidence for polyandry in the threatened green and golden bell frog. Genetica 2021; 149:327-333. [PMID: 34655370 DOI: 10.1007/s10709-021-00137-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 10/05/2021] [Indexed: 11/28/2022]
Abstract
Identifying which species exhibit polyandry may lead to further insights into evolutionary biology and social behaviour. However, confirming polyandry can be difficult. High-resolution genetics provides a useful means to gain evidence. Although the threatened Pelodryadid frog, the green and golden bell frog Litoria aurea, has been subject to numerous ecological studies, there is uncertainty surrounding its reproductive ecology. Polyandry has not been formally identified in L. aurea or any species within the Pelodryadidae family. We aimed to identify if there was genetic evidence of polyandry in a population occurring in a wetland complex on Kooragang Island, New South Wales. To accomplish this, we collected genetic samples of tadpoles within the same size cohort about 20-30 days after explosive breeding events. Genotypes of 14 females, nine males and 70 tadpoles were analysed with COLONY (1988 single nucleotide polymorphisms after filtering) to identify parentage, full-siblings and half-siblings. We found support for the hypothesis that L. aurea is polyandrous. Based on previous observations of multi-male matings and the narrow time periods that breeding occurred in, it is likely this species exhibits simultaneous polyandry. We discuss these results in regards to behavioural adaptive processes and avenues for further research.
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Affiliation(s)
- Chad T Beranek
- School of Environmental and Life Sciences, Biology Building, University of Newcastle, University Drive, Callaghan, NSW, 2308, Australia. .,FAUNA Research Alliance, PO Box 5092, Kahibah, NSW, 2290, Australia.
| | - John Clulow
- School of Environmental and Life Sciences, Biology Building, University of Newcastle, University Drive, Callaghan, NSW, 2308, Australia.,FAUNA Research Alliance, PO Box 5092, Kahibah, NSW, 2290, Australia
| | - Michael Mahony
- School of Environmental and Life Sciences, Biology Building, University of Newcastle, University Drive, Callaghan, NSW, 2308, Australia
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13
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Moura PHAG, Elias-Costa AJ, Nunes I, Faivovich J. Diversity and evolution of the extraordinary vocal sacs of casque-headed treefrogs (Anura: Hylidae). Biol J Linn Soc Lond 2021. [DOI: 10.1093/biolinnean/blab083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Vocal sacs are among the most conspicuous features of anurans and are particularly striking in casque-headed treefrogs (Hylidae: Hylinae: Lophyohylini) with their wide array of morphologies. In this paper, we assessed the anatomy of vocal sacs in representatives of the Lophyohylini, described eight discrete characters and studied their evolution. We inferred that dorsolateral projections of the vocal sacs were already present during the early evolution of the tribe. Subsequently, they reached surprising volumes in some species, whereas in others they were notably reduced. We inferred between nine and 11 independent events of reduction of the size and lateral projections of the vocal sac, showing unprecedented levels of plasticity for the structure. Moreover, these events were strongly correlated with the colonization of phytotelmata as breeding sites, probably due to their confined space which hampers the inflation of large vocal sacs. Finally, we discuss the evolution of paired lateral vocal sacs in different groups of anurans, and the extent to which the paired and dorsally-projecting lobes of most Trachycephalus differ from those of distantly related taxa. Our findings highlight how variation in internal structure affects the shape of the inflated vocal sac and provides a framework applicable across the Anura.
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Affiliation(s)
- Pedro Henrique Areco Gomes Moura
- Laboratório de Herpetologia 11.330–900, Instituto de Biociências, Campus do Litoral Paulista, Universidade Estadual Paulista, São Vicente,São Paulo,Brazil
| | - Agustín J Elias-Costa
- División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”- CONICET, Avenida Ángel Gallardo 470,C1405DJR,Buenos Aires,Argentina
| | - Ivan Nunes
- Laboratório de Herpetologia 11.330–900, Instituto de Biociências, Campus do Litoral Paulista, Universidade Estadual Paulista, São Vicente,São Paulo,Brazil
| | - Julián Faivovich
- División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”- CONICET, Avenida Ángel Gallardo 470,C1405DJR,Buenos Aires,Argentina
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
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14
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Reproductive Phenology of Five Species of Terrestrial Frogs (Genus Eleutherodactylus) from Cuba. J HERPETOL 2021. [DOI: 10.1670/20-027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Malagoli LR, Pezzuti TL, Bang DL, Faivovich J, Lyra ML, Giovanelli JGR, Garcia PCDA, Sawaya RJ, Haddad CFB. A new reproductive mode in anurans: Natural history of Bokermannohyla astartea (Anura: Hylidae) with the description of its tadpole and vocal repertoire. PLoS One 2021; 16:e0246401. [PMID: 33596209 PMCID: PMC7888631 DOI: 10.1371/journal.pone.0246401] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 01/19/2021] [Indexed: 11/19/2022] Open
Abstract
Anurans have the greatest diversity of reproductive modes among tetrapod vertebrates, with at least 41 being currently recognized. We describe a new reproductive mode for anurans, as exhibited by the Paranapiacaba Treefrog, Bokermannohyla astartea, an endemic and poorly known species of the Brazilian Atlantic Forest belonging to the B. circumdata group. We also describe other aspects of its reproductive biology, that are relevant to understanding the new reproductive mode, such as courtship behavior, spawning, and tadpoles. Additionally, we redescribe its advertisement call and extend its vocal repertoire by describing three additional call types: courtship, amplectant, and presumed territorial. The new reproductive mode exhibited by B. astartea consists of: (1) deposition of aquatic eggs in leaf-tanks of terrestrial or epiphytic bromeliads located on or over the banks of temporary or permanent streams; (2) exotrophic tadpoles remain in the leaf-tanks during initial stages of development (until Gosner stage 26), after which they presumably jump or are transported to streams after heavy rains that flood their bromeliad tanks; and (3) tadpole development completes in streams. The tadpoles of B. astartea are similar to those of other species of the B. circumdata group, although with differences in the spiracle, eyes, and oral disc. The vocal repertoire of B. astartea exhibits previously unreported acoustic complexity for the genus. Bokermannohyla astartea is the only bromeligenous species known to date among the 187 known species within the tribe Cophomantini. We further discuss evolutionary hypotheses for the origin of this novel reproductive mode.
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Affiliation(s)
- Leo Ramos Malagoli
- Núcleo São Sebastião, Parque Estadual da Serra do Mar, Fundação para a Conservação e a Produção Florestal do Estado de São Paulo, São Sebastião, São Paulo, Brazil
- Departamento de Biodiversidade e Centro de Aquicultura (CAUNESP), Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, São Paulo, Brazil
| | - Tiago Leite Pezzuti
- Programa de Pós-Graduação em Zoologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Davi Lee Bang
- Programa de Pós-Graduação em Biologia Comparada, Departamento de Biologia/FFCLRP, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Julián Faivovich
- División Herpetología, Museo Argentino de Ciencias Naturales-CONICET, Buenos Aires, Argentina
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Mariana Lúcio Lyra
- Departamento de Biodiversidade e Centro de Aquicultura (CAUNESP), Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, São Paulo, Brazil
| | - João Gabriel Ribeiro Giovanelli
- Departamento de Biodiversidade e Centro de Aquicultura (CAUNESP), Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, São Paulo, Brazil
| | - Paulo Christiano de Anchietta Garcia
- Programa de Pós-Graduação em Zoologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ricardo Jannini Sawaya
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), São Bernardo do Campo, São Paulo, Brazil
| | - Célio Fernando Baptista Haddad
- Departamento de Biodiversidade e Centro de Aquicultura (CAUNESP), Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, São Paulo, Brazil
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16
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Cheron M, Brischoux F. Aminomethylphosphonic acid alters amphibian embryonic development at environmental concentrations. ENVIRONMENTAL RESEARCH 2020; 190:109944. [PMID: 32771800 DOI: 10.1016/j.envres.2020.109944] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/25/2020] [Accepted: 07/12/2020] [Indexed: 05/27/2023]
Abstract
Despite intense societal and scientific debates regarding glyphosate toxicity, it remains the most widely used herbicide. The primary metabolite of glyphosate, AMPA (aminomethylphosphonic acid), is the main contaminant detected in surface waters worldwide, both because of the extensive use of glyphosate and because of other widespread sources of AMPA (i.e., industrial detergents). Studies on potential effects of glyphosate using environmentally relevant concentrations of AMPA on non-target wildlife species are lacking. We experimentally tested the effects of AMPA on embryonic development in a common European toad at concentrations spanning the range found in natural water bodies (from 0.07 to 3.57 μg l-1). Our experimental concentrations of AMPA were 100-6000 times lower than official Predicted-No-Effect-Concentrations. We found that these low-level concentrations of AMPA decreased embryonic survival, increased development duration and influenced hatchling morphology. Response patterns were more complex than classical linear concentration-response relationships, as concentration responses were nonmonotonic, with greater effects at low-concentrations of AMPA than at high levels. Based on our results we recommend that investigators focus not only on effects of "parent compounds," but also their metabolites at environmentally relevant concentrations in order to comprehensively assess impacts of anthropogenic contaminants on the environment.
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Affiliation(s)
- Marion Cheron
- Centre d'Etudes Biologiques de Chizé, CEBC UMR 7372 CNRS-La Rochelle Université, 79360 Villiers en Bois, France
| | - François Brischoux
- Centre d'Etudes Biologiques de Chizé, CEBC UMR 7372 CNRS-La Rochelle Université, 79360 Villiers en Bois, France.
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17
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Cajade R, GarcÍa ML, Pietro DO, Basso NÉG. Behavioral and morphological contrasts on the reproduction of two prolonged breeders of the genus Physalaemus (Anura: Leptodactylidae). AN ACAD BRAS CIENC 2020; 92:e20180773. [PMID: 33146272 DOI: 10.1590/0001-3765202020180773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 04/25/2019] [Indexed: 11/22/2022] Open
Abstract
The reproduction is one of the main events in the life of an organism, and anurans stand out among vertebrates because of the diversity of their reproductive strategies. We studied the reproduction of two syntopic species, Physalaemus aff. albonotatus and P. santafecinus, and comparatively described their reproductive activity pattern, advertisement calls, calling sites, daily calling activity, amplexus behavior, foam nests, and microhabitats in foam nests. In regards to the reproductive activity pattern, both species were defined as prolonged breeders. However, P. santafecinus exhibited a behavior like explosive breeders: it had a faster reproductive response against rains than P. aff. albonotatus. The calling activity was restricted exclusively to night hours in P. santafecinus, whereas P. aff. albonotatus called during both night and day. The advertisement calls of both species showed a rich harmonic structure, and were characterized by a bimodal harmonic dominance. The species differed significantly in microhabitat calling sites, foam nests, and microhabitats in foam nests. Namely, P. santafecinus frequently called and constructed its nests in sites more exposed than those of P. aff. albonotatus. The general differences in reproductive behaviors observed between the species principally agree with their different reproductive activity patterns.
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Affiliation(s)
- Rodrigo Cajade
- Laboratorio de Herpetología, Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste y CONICET, Av. Libertad 5470, CP. 3400, Corrientes, Argentina
| | - Mirta L GarcÍa
- Laboratorio de Ictiología, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, 60 y 122, CP. 1900, La Plata, Buenos Aires, Argentina
| | - Diego O Pietro
- Sección Herpetología, División Zoología Vertebrados, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Av. 122 y 60 s/n, CP. 1900, La Plata, Buenos Aires, Argentina
| | - NÉstor G Basso
- Instituto de Diversidad y Evolución Austral - CONICET, Bvd. Brown, 2915, CP. 9120, Puerto Madryn, Chubut, Argentina
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18
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The Frog Fauna of Southwestern Australia: Diverse, Bizarre, Old, and Polyandrous. J HERPETOL 2020. [DOI: 10.1670/19-024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Silva NR, Berneck BVM, da Silva HR, Haddad CFB, Zamudio KR, Mott T, Nali RC, Prado CPA. Egg-laying site, fecundity and degree of sexual size dimorphism in frogs. Biol J Linn Soc Lond 2020. [DOI: 10.1093/biolinnean/blaa126] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Female fecundity is an important selective force leading to female-biased sexual size dimorphism (SSD) in frogs. Because anurans exhibit diverse reproductive modes, we investigated whether variation in SSD and fecundity are related with oviposition site. We asked whether arboreal breeding species show pronounced female-biased SSD and if, paradoxically, females have lower fecundity because of the costs of carrying oocytes and amplectant males. Conversely, we tested whether species that deposit eggs in concealed sites show less pronounced SSD, because females do not carry males and space limitation may reduce female size and fecundity. Our results showed that, in general, males were approximately 20% smaller than females. However, for species with hidden oviposition sites, males and females exhibited more similar body sizes and arboreal hylids showed more pronounced female-biased SSD. Overall, fecundity was higher in aquatic breeders, as expected, but in hylids, fecundity was smaller in arboreal breeders, which suggests that arboreality may impose restrictions on fecundity. By analysing SSD in a broader and more specific lineage (Hylidae), we found that reproductive microhabitat may also influence female size and fecundity, playing an important role in the evolution of SSD in frogs at different evolutionary scales.
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Affiliation(s)
- Nelson Rodrigues Silva
- Programa de Pós-Graduação em Diversidade Biológica e Conservação nos Trópicos, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Maceió, Alagoas, Brazil
- Setor de Herpetologia, Museu de História Natural, Universidade Federal de Alagoas, Maceió, Alagoas, Brazil
| | - Bianca V M Berneck
- Departamento de Biologia Animal, Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, Rio de Janeiro, Brazil
| | - Helio R da Silva
- Departamento de Biologia Animal, Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, Rio de Janeiro, Brazil
| | - Célio F B Haddad
- Departamento de Biodiversidade e Centro de Aquicultura, Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, São Paulo, Brazil
| | - Kelly R Zamudio
- Department of Ecology and Evolutionary Biology, College of Agriculture and Life Sciences, Cornell University, Ithaca, New York, USA
| | - Tamí Mott
- Programa de Pós-Graduação em Diversidade Biológica e Conservação nos Trópicos, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Maceió, Alagoas, Brazil
- Setor de Herpetologia, Museu de História Natural, Universidade Federal de Alagoas, Maceió, Alagoas, Brazil
| | - Renato C Nali
- Departamento de Zoologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - Cynthia P A Prado
- Departamento de Morfologia e Fisiologia Animal, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Jaboticabal, São Paulo, Brazil
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20
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Womack MC, Bell RC. Two-hundred million years of anuran body-size evolution in relation to geography, ecology and life history. J Evol Biol 2020; 33:1417-1432. [PMID: 32672849 DOI: 10.1111/jeb.13679] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 07/07/2020] [Indexed: 01/08/2023]
Abstract
Surprisingly, little is known about body-size evolution within the most diverse amphibian order, anurans (frogs and toads), despite known effects of body size on the physiological, ecological and life-history traits of animals more generally. Here, we examined anuran body-size evolution among 2,434 species with over 200 million years of shared evolutionary history. We found clade-specific evolutionary shifts to new body-size optima along with numerous independent transitions to gigantic and miniature body sizes, despite the upper limits of anuran body size remaining quite consistent throughout the fossil record. We found a weak, positive correlation between a species' body size and maximum latitude and elevation, including a dearth of small species at higher elevations and broader latitudinal and elevational ranges in larger anurans. Although we found modest differences in mean anuran body size among microhabitats, there was extensive overlap in the range of body sizes across microhabitats. Finally, we found that larger anurans are more likely to consume vertebrate prey than smaller anurans are and that species with a free-swimming larval phase during development are larger on average than those in which development into a froglet occurs within the egg. Overall, anuran body size does not conform to geographic and ecological patterns observed in other tetrapods but is perhaps more notable for variation in body size within geographic regions, ecologies and life histories. Here, we document this variation and propose target clades for detailed studies aimed at disentangling how and why variation in body size was generated and is maintained in anurans.
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Affiliation(s)
- Molly C Womack
- Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, District of Columbia, USA.,Department of Biology, Utah State University, Logan, Utah, USA
| | - Rayna C Bell
- Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, District of Columbia, USA.,Herpetology Department, California Academy of Sciences, San Francisco, California, USA
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21
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Vági B, Végvári Z, Liker A, Freckleton RP, Székely T. Parental care and the evolution of terrestriality in frogs. Proc Biol Sci 2020; 286:20182737. [PMID: 30966991 DOI: 10.1098/rspb.2018.2737] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Frogs and toads (Anura) exhibit some of the most diverse parental strategies in vertebrates. Identifying the evolutionary origins of parenting is fundamental to understanding the relationships between sexual selection, social evolution and parental care systems of contemporary Anura. Moreover, parenting has been hypothesized to allow the invasion of terrestrial habitats by the ancestors of terrestrial vertebrates. Using comprehensive phylogenetic analyses of frogs and toads based on data from over 1000 species that represent 46 out of 55 Anura families, we test whether parental care is associated with terrestrial reproduction and several life-history traits. Here, we show that both the duration of care and offspring protection by males and females have coevolved with terrestrial reproduction. Sexual size dimorphism is also related to care, because the large male size relative to female size is associated with increased paternal care. Furthermore, increased egg size and reduced clutch volume are associated with increased care in bivariate but not in multivariate analyses, suggesting that the relationships between care, egg size and clutch volume are mediated by terrestrial reproduction. Taken together, our results suggest that parenting by males and females has coevolved, and complex parenting traits have evolved several times independently in Anura in response to breeding in terrestrial environments.
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Affiliation(s)
- Balázs Vági
- 1 Department of Evolutionary Zoology and Human Biology, University of Debrecen , Debrecen , Hungary
| | - Zsolt Végvári
- 2 Department of Conservation Zoology, University of Debrecen , Debrecen , Hungary.,3 Department Hortobágy National Park Directorate , Debrecen , Hungary
| | - András Liker
- 4 Department of Limnology, University of Pannonia , Veszprém , Hungary
| | - Robert P Freckleton
- 5 Department of Animal and Plant Sciences, University of Sheffield , Sheffield , UK
| | - Tamás Székely
- 6 Milner Centre for Evolution, University of Bath , Bath , UK
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22
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Carvajal-Castro JD, López-Aguirre Y, Ospina-L AM, Santos JC, Rojas B, Vargas-Salinas F. Much more than a clasp: evolutionary patterns of amplexus diversity in anurans. Biol J Linn Soc Lond 2020. [DOI: 10.1093/biolinnean/blaa009] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
AbstractThe evolution and diversification of animal reproductive modes have been pivotal questions in behavioural ecology. Amphibians present the highest diversity of reproductive modes among vertebrates, involving various behavioural, physiological and morphological traits. One such feature is the amplexus, which is the clasp or embrace of males on females during reproduction and is found almost universally in anurans. Hypotheses about the origin of amplexus are limited and have not been tested thoroughly, nor have they taken into account evolutionary relationships in most comparative studies. However, these considerations are crucial to an understanding of the evolution of reproductive modes. Here, using an evolutionary framework, we reconstruct the ancestral state of amplexus in 685 anuran species. We investigate whether the type of amplexus has a strong phylogenetic signal and test whether sexual size dimorphism could have influenced amplexus type or male performance while clasping females. Overall, we found evidence of ≥34 evolutionary transitions in amplexus type across anurans. We found that amplexus type exhibits a high phylogenetic signal and that amplexus type does not evolve in association with sexual size dimorphism. We discuss the implications of our findings for the diversity of amplexus types across anurans.
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Affiliation(s)
- Juan D Carvajal-Castro
- Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Villa de Leyva and Bogotá DC, Colombia
- Grupo de Investigación en Evolución, Ecología y Conservación (EECO), Universidad del Quindío, Armenia, Colombia
| | - Yelenny López-Aguirre
- Grupo de Investigación en Evolución, Ecología y Conservación (EECO), Universidad del Quindío, Armenia, Colombia
| | - Ana María Ospina-L
- Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Villa de Leyva and Bogotá DC, Colombia
- Grupo de Investigación en Evolución, Ecología y Conservación (EECO), Universidad del Quindío, Armenia, Colombia
| | - Juan C Santos
- Department of Biological Sciences, St. John’s University, Queens, NY, USA
| | - Bibiana Rojas
- Department of Biology and Environmental Science, University of Jyväskylä, Jyväskylä, Finland
| | - Fernando Vargas-Salinas
- Grupo de Investigación en Evolución, Ecología y Conservación (EECO), Universidad del Quindío, Armenia, Colombia
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23
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Condez TH, Haddad CFB, Zamudio KR. Historical biogeography and multi-trait evolution in miniature toadlets of the genus Brachycephalus (Anura: Brachycephalidae). Biol J Linn Soc Lond 2020. [DOI: 10.1093/biolinnean/blz200] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Evolutionary changes towards a miniaturized body plan may directly affect other important phenotypic traits related to the physiology, behaviour and ecology of organisms. The frog genus Brachycephalus is an outstanding example of a radiation of miniaturized species endemic to the Brazilian Atlantic Forest. We inferred ancestral states and historical changes in body size, body colour and hyperossification to test hypotheses about diversification and selective environmental mechanisms leading to the evolution of these specialized traits. The ancestral distribution was associated with high-elevation regions in the northern Serra do Mar mountain range, and diversification in the genus was coincident with important geological and climatic events during the history of the Atlantic Forest. The dynamic historical changes provided an opportunity for multiple lowland lineages and for speciation via dispersal and vicariance in multiple invasions of the highlands. The ancestral Brachycephalus was reconstructed as miniaturized and dull coloured, without hyperossification in the skin, skull or postcranial skeleton. A parallel evolution of phenotypic traits has occurred in northern and southern Atlantic Forest lineages, beginning in the Miocene. Shifts in body size are not related to elevation range or latitude. However, we found a significant correlation between the evolution of hyperossification and aposematism with increasing body size.
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Affiliation(s)
- Thais H Condez
- Instituto Nacional da Mata Atlântica (INMA), Avenida José Ruschi, Santa Teresa, Espírito Santo, Brazil
| | - Célio F B Haddad
- Departamento de Zoologia e Centro de Aquicultura (CAUNESP), Instituto de Biociências, Universidade Estadual Paulista Júlio de Mesquita Filho, Rio Claro, São Paulo, Brazil
| | - Kelly R Zamudio
- Ecology and Evolutionary Biology (EEB), Cornell University, Corson Hall, Ithaca, New York, United States
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24
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de Sá FP, Haddad CFB, Gray MM, Verdade VK, Thomé MTC, Rodrigues MT, Zamudio KR. Male-male competition and repeated evolution of terrestrial breeding in Atlantic Coastal Forest frogs. Evolution 2019; 74:459-475. [PMID: 31710098 DOI: 10.1111/evo.13879] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 10/09/2019] [Accepted: 10/17/2019] [Indexed: 11/28/2022]
Abstract
Terrestrial breeding is a derived condition in frogs, with multiple transitions from an aquatic ancestor. Shifts in reproductive mode often involve changes in habitat use, and these are typically associated with diversification in body plans, with repeated transitions imposing similar selective pressures. We examine the diversification of reproductive modes, male and female body sizes, and sexual size dimorphism (SSD) in the Neotropical frog genera Cycloramphus and Zachaenus, both endemic to the Atlantic rainforest of Brazil. Species in this clade either breed in rocky streams (saxicolous) or in terrestrial environments, allowing us to investigate reproductive habitat shifts. We constructed a multilocus molecular phylogeny and inferred evolutionary histories of reproductive habitats, body sizes, and SSD. The common ancestor was small, saxicolous, and had low SSD. Terrestrial breeding evolved independently three times and we found a significant association between reproductive habitat and SSD, with shifts to terrestrial breeding evolving in correlation with decreases in male body size, but not female body size. Terrestrial breeding increases the availability of breeding sites and results in concealment of amplexus, egg-laying, and parental care, therefore reducing male-male competition at all stages of reproduction. We conclude that correlated evolution of terrestrial reproduction and small males is due to release from intense male-male competition that is typical of exposed saxicolous breeding.
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Affiliation(s)
- Fábio P de Sá
- Departamento de Zoologia and Centro de Aquicultura (CAUNESP), Instituto de Biociências, UNESP - Universidade Estadual Paulista, Rio Claro, 13506-900, São Paulo, Brazil
| | - Célio F B Haddad
- Departamento de Zoologia and Centro de Aquicultura (CAUNESP), Instituto de Biociências, UNESP - Universidade Estadual Paulista, Rio Claro, 13506-900, São Paulo, Brazil
| | - Miranda M Gray
- Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York, 14853
| | - Vanessa K Verdade
- Centro de Ciências Naturais e Humanas, UFABC - Universidade Federal do ABC, Santo André, 09210-580, São Paulo, Brazil
| | - Maria Tereza C Thomé
- Departamento de Zoologia and Centro de Aquicultura (CAUNESP), Instituto de Biociências, UNESP - Universidade Estadual Paulista, Rio Claro, 13506-900, São Paulo, Brazil
| | - Miguel T Rodrigues
- Departamento de Zoologia, Instituto de Biociências, USP - Universidade de São Paulo, 05508-090, São Paulo, São Paulo, Brazil
| | - Kelly R Zamudio
- Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York, 14853
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25
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Abstract
Parental care is extremely diverse across species, ranging from simple behaviours to complex adaptations, varying in duration and in which sex cares. Surprisingly, we know little about how such diversity has evolved. Here, using phylogenetic comparative methods and data for over 1300 amphibian species, we show that egg attendance, arguably one of the simplest care behaviours, is gained and lost faster than any other care form, while complex adaptations, like brooding and viviparity, are lost at very low rates, if at all. Prolonged care from the egg to later developmental stages evolves from temporally limited care, but it is as easily lost as it is gained. Finally, biparental care is evolutionarily unstable regardless of whether the parents perform complementary or similar care duties. By considering the full spectrum of parental care adaptations, our study reveals a more complex and nuanced picture of how care evolves, is maintained, or is lost. Parental care can take many forms but how this diversity arises is not well understood. Here, the authors compile data for over 1300 amphibian species and show that different forms of care evolve at different rates, prolonged care can be easily reduced, and biparental care is evolutionarily unstable.
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26
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Ferreira RB, Mônico AT, Zocca CZ, Santos MTT, Lírio FC, Tonini JF, Sabagh LT, Cipriano RS, Waichert C, Crump ML, Beard KH, Toledo LF, Duca C. Uncovering the Natural History of the Bromeligenous Frog Crossodactylodes izecksohni (Leptodactylidae, Paratelmatobiinae). SOUTH AMERICAN JOURNAL OF HERPETOLOGY 2019. [DOI: 10.2994/sajh-d-17-00092.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Rodrigo B. Ferreira
- Programa de Pós-Graduação em Ecologia de Ecossistemas, Universidade Vila Velha. CEP 29102920, Vila Velha, ES, Brazil
| | - Alexander T. Mônico
- Programa de Pós-Graduação em Ecologia de Ecossistemas, Universidade Vila Velha. CEP 29102920, Vila Velha, ES, Brazil
| | - Cássio Z. Zocca
- Programa de Pós-Graduação em Ecologia de Ecossistemas, Universidade Vila Velha. CEP 29102920, Vila Velha, ES, Brazil
| | - Marcus Thadeu T. Santos
- Programa de Pós-Graduação em Zoologia, Instituto de Biociências, Universidade Estadual Paulista. CEP 13506900, Rio Claro, SP, Brazil
| | - Fernanda C.F. Lírio
- Programa de Pós-Graduação em Ecologia de Ecossistemas, Universidade Vila Velha. CEP 29102920, Vila Velha, ES, Brazil
| | - João F.R. Tonini
- Department of Biological Sciences, The George Washington University. 2029 G St NW, Washington, DC 20052, USA
| | - Leandro T. Sabagh
- Laboratório de Ecologia de Vertebrados, Departamento de Ecologia, Universidade do Estado do Rio de Janeiro. CEP 20550013, Rio de Janeiro, RJ, Brazil
| | - Rafael S. Cipriano
- Instituto Nacional da Mata Atlântica. CEP 29650000, Santa Teresa, ES, Brazil
| | - Cecilia Waichert
- Programa de Pós-Graduação em Ecologia de Ecossistemas, Universidade Vila Velha. CEP 29102920, Vila Velha, ES, Brazil
| | - Martha L. Crump
- Department of Biology, Utah State University. Logan, Utah, 84322, USA
| | - Karen H. Beard
- Department of Wildland Resources and the Ecology Center, Utah State University. Logan, Utah, 84322, USA
| | - Luís Felipe Toledo
- Laboratório de História Natural de Anfíbios Brasileiros, Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas. CEP 13083862, Campinas, SP, Brazil
| | - Charles Duca
- Programa de Pós-Graduação em Ecologia de Ecossistemas, Universidade Vila Velha. CEP 29102920, Vila Velha, ES, Brazil
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27
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O'Brien DM, Keogh JS, Silla AJ, Byrne PG. The unexpected genetic mating system of the red‐backed toadlet (
Pseudophryne coriacea
): A species with prolonged terrestrial breeding and cryptic reproductive behaviour. Mol Ecol 2018; 27:3001-3015. [DOI: 10.1111/mec.14737] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 04/26/2018] [Accepted: 05/18/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Daniel M. O'Brien
- Centre for Sustainable Ecosystem Solutions School of Earth, Atmospheric and Life Sciences University of Wollongong Wollongong NSW Australia
| | - J. Scott Keogh
- Ecology and Evolution Research School of Biology The Australian National University Canberra ACT Australia
| | - Aimee J. Silla
- Centre for Sustainable Ecosystem Solutions School of Earth, Atmospheric and Life Sciences University of Wollongong Wollongong NSW Australia
| | - Phillip G. Byrne
- Centre for Sustainable Ecosystem Solutions School of Earth, Atmospheric and Life Sciences University of Wollongong Wollongong NSW Australia
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The earliest direct evidence of frogs in wet tropical forests from Cretaceous Burmese amber. Sci Rep 2018; 8:8770. [PMID: 29904068 PMCID: PMC6002357 DOI: 10.1038/s41598-018-26848-w] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Accepted: 05/16/2018] [Indexed: 11/18/2022] Open
Abstract
Frogs are a familiar and diverse component of tropical forests around the world. Yet there is little direct evidence from the fossil record for the antiquity of this association. We describe four fossil frog specimens from mid-Cretaceous (~99 mya) amber deposits from Kachin State, Myanmar for which the associated fauna provides rich paleoenvironmental context. Microcomputed tomographic analysis provides detailed three-dimensional anatomy for these small frogs, which is generally unavailable for articulated anurans in the Mesozoic. These crown-group anuran specimens provide the earliest direct evidence for anurans in a wet tropical forest. Based on a distinct combination of skeletal characters, at least one specimen has clear similarities to living alytoid frogs as well as several Mesozoic taxa known from the Jehol Biota in China. Whereas many Mesozoic frogs are from seasonal and mesic paleoenvironments, these fossils provide the earliest direct evidence of anurans in wet tropical forests.
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29
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Keogh LM, Byrne PG, Silla AJ. Effect of long-term dietary beta-carotene supplementation on sperm concentration and motility in an endangered amphibian. Anim Reprod Sci 2018; 195:259-265. [PMID: 31262404 DOI: 10.1016/j.anireprosci.2018.06.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 05/20/2018] [Accepted: 06/01/2018] [Indexed: 01/23/2023]
Abstract
Dietary carotenoids have a high antioxidant capacity, so it has been hypothesised that carotenoid supplimentation will improve sperm production and quality by protecting sperm from oxidative damage. The effects of carotenoids on sperm have only been assessed in three vertebrate species, and evidence for improved sperm concentration and motility remains equivocal. One reason for this might be that in most studies there has not been an assessment of the effects of single carotenoid compounds over a range of doses. Applied research focused on developing ways to improve sperm quality could benefit the captive breeding and conservation of threatened species. The aim of the present study was to assess a dose-dependent effect of beta-carotene supplementation on sperm concentration and motility in the endangered booroolong frog (Litoria booroolongensis). Individuals were supplemented with one of four beta-carotene doses (0, 0.1, 1 and 10 mg/g) from hatching until sexual maturity (53 weeks). Sperm concentration was determined prior to activation, and percent sperm motility and sperm velocity were measured at 0, 3 and 6 h post-activation using computer-assisted sperm analysis. Unexpectedly, beta-carotene had no significant effect on sperm concentration, percent motility or velocity at any time point, providing no evidence for beneficial effects. Findings of the present study indicate there are likely to be species-specific differences in sperm production and motility that influence the risk of oxidative damage to sperm and dependence on dietary antioxidants to inhibit these detrimental effects.
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Affiliation(s)
- Leesa M Keogh
- Centre for Sustainable Ecosystem Solutions, School of Earth, Atmospheric and Life Sciences, University of Wollongong, NSW, 2522, Australia.
| | - Phillip G Byrne
- Centre for Sustainable Ecosystem Solutions, School of Earth, Atmospheric and Life Sciences, University of Wollongong, NSW, 2522, Australia
| | - Aimee J Silla
- Centre for Sustainable Ecosystem Solutions, School of Earth, Atmospheric and Life Sciences, University of Wollongong, NSW, 2522, Australia
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30
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Zhang L, An D, He Y, Li Z, Fang B, Chen X, Lu X. Variation in testis weight of the Tibetan toad Scutiger boulengeri along a narrow altitudinal gradient. ANIM BIOL 2018. [DOI: 10.1163/15707563-17000016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Abstract
Life-history theory predicts that organisms inhabiting harsh environments such as high altitudes should invest less in reproduction and more in survival. Testis size is associated with the intensity of male-male competition for mating and thus may be treated as an indicator of male reproductive investment. Hence, it may be expected that organisms will reduce their testis size with increasingly harsh environments. Here we test this prediction in a toad species, Scutiger boulengeri, endemic to the Tibetan plateau using data from three populations located at altitudes of 4078, 4276, and 4387 m. Consistent with the prediction, male toads exhibited smaller testes at higher altitudes, despite the relatively narrow altitudinal span. It is likely that cold climates and strong seasonality constrain the ability of high-altitude male toads to allocate more energy into reproduction, thereby leading to small testis size. In addition, the left testis was significantly heavier than the right one and the degree of size asymmetry was unrelated to either altitude or body condition.
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Affiliation(s)
- Lixia Zhang
- 1Department of Ecology, College of Life Sciences, Henan Normal University, Xinxiang 453007, China
| | - Dong An
- 1Department of Ecology, College of Life Sciences, Henan Normal University, Xinxiang 453007, China
| | - Yuxiao He
- 1Department of Ecology, College of Life Sciences, Henan Normal University, Xinxiang 453007, China
| | - Zhibing Li
- 1Department of Ecology, College of Life Sciences, Henan Normal University, Xinxiang 453007, China
| | - Bohao Fang
- 2Department of Ecology, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Xiaohong Chen
- 1Department of Ecology, College of Life Sciences, Henan Normal University, Xinxiang 453007, China
| | - Xin Lu
- 2Department of Ecology, College of Life Sciences, Wuhan University, Wuhan 430072, China
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31
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Advancing Understanding of Amphibian Evolution, Ecology, Behavior, and Conservation with Massively Parallel Sequencing. POPULATION GENOMICS 2018. [DOI: 10.1007/13836_2018_61] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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32
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Liao WB, Huang Y, Zeng Y, Zhong MJ, Luo Y, Lüpold S. Ejaculate evolution in external fertilizers: Influenced by sperm competition or sperm limitation? Evolution 2017; 72:4-17. [PMID: 28975611 DOI: 10.1111/evo.13372] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 09/22/2017] [Accepted: 09/26/2017] [Indexed: 12/19/2022]
Abstract
The evolution of sperm quality and quantity is shaped by various selective processes, with sperm competition generally considered the primary selective agent. Particularly in external fertilizers, however, sperm limitation through gamete dispersal can also influence gamete investments, but empirical data examining this effect are limited. Here, we studied the relative importance of sperm competition and the spawning conditions in explaining the macroevolutionary patterns of sperm size and number within two taxa with external fertilization but differences in their reproductive biology. In frogs, sperm swim slowly but for up to hours as they penetrate the gelatinous egg coating, whereas fish sperm typically swim fast, are very short-lived (seconds to minutes), and often face a relatively higher risk of being moved away from the ova by currents. Our phylogenetic models and path analyses revealed different trajectories of ejaculate evolution in these two taxa. Sperm size and number responded primarily to variation in sperm competition in the anurans, but more strongly to egg number and water turbulence in the fishes. Whereas the results across anurans align with the general expectation that sexual selection is the main driver of ejaculate evolution, our findings across the fishes suggest that sperm limitation has been underappreciated.
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Affiliation(s)
- Wen Bo Liao
- Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education), China West Normal University, Nanchong 637009, Sichuan, China
| | - Yan Huang
- Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education), China West Normal University, Nanchong 637009, Sichuan, China
| | - Yu Zeng
- Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education), China West Normal University, Nanchong 637009, Sichuan, China
| | - Mao Jun Zhong
- Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education), China West Normal University, Nanchong 637009, Sichuan, China
| | - Yi Luo
- Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education), China West Normal University, Nanchong 637009, Sichuan, China
| | - Stefan Lüpold
- Department of Evolutionary Biology and Environmental Studies, University of Zurich-Irchel, Winterthurerstrasse 190, 8057 Zurich, Switzerland
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Alfonso YU, Rodríguez-Gómez Y, Charruau P, Sanz-Ochotorena A, Krysko KL. Oviposition and Gonadal Ultrastructure in the Cuban Groin-spot Frog,Eleutherodactylus atkinsiDunn, 1925 (Anura: Eleutherodactylidae). COPEIA 2017. [DOI: 10.1643/ch-17-633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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34
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Pereira EB, Pinto-Ledezma JN, de Freitas CG, Villalobos F, Collevatti RG, Maciel NM. Evolution of the anuran foam nest: trait conservatism and lineage diversification. Biol J Linn Soc Lond 2017. [DOI: 10.1093/biolinnean/blx110] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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35
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Bell RC, Webster GN, Whiting MJ. Breeding biology and the evolution of dynamic sexual dichromatism in frogs. J Evol Biol 2017; 30:2104-2115. [DOI: 10.1111/jeb.13170] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 08/06/2017] [Accepted: 08/13/2017] [Indexed: 02/04/2023]
Affiliation(s)
- R. C. Bell
- Museum of Vertebrate Zoology University of California Berkeley CA USA
- Department of Vertebrate Zoology National Museum of Natural History Smithsonian Institution Washington DC USA
| | - G. N. Webster
- Department of Biological Sciences Macquarie University Sydney NSW Australia
| | - M. J. Whiting
- Department of Biological Sciences Macquarie University Sydney NSW Australia
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Fratani J, Ponssa ML, Abdala V. Tendinous framework of anurans reveals an all-purpose morphology. ZOOLOGY 2017; 126:172-184. [PMID: 29310934 DOI: 10.1016/j.zool.2017.08.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 08/10/2017] [Accepted: 08/11/2017] [Indexed: 01/14/2023]
Abstract
Tendons are directly associated with movement, amplifying power and reducing muscular work. Taking into account habitat and locomotor challenges faced by anurans, we identify the more conspicuous superficial tendons of a neotropical anuran group and investigate their relation to the former factors. We show that tendons can be visualized as an anatomical framework connected through muscles and/or fascia, and describe the most superficial tendinous layer of the postcranium of Leptodactylus latinasus. To analyze the relation between tendon morphology and ecological characters, we test the relative length ratio of 10 tendon-muscle (t-m) elements in 45 leptodactylid species while taking phylogeny into account. We identify the evolutionary model that best explains our variables. Additionally, we optimize t-m ratio values, and the shape of the longissimus dorsi insertion onto a selected phylogeny of the species. Our data show the existence of an all-purpose morphology that seems to have evolved independently of ecology and functional requirements. This is indicated by no significant relation between morphometric data of the analyzed tendons and habitat use or locomotion, a strong phylogenetic component to most of the analyzed variables, and a generalized pattern of intermediate values for ancestral states. Ornstein-Uhlenbeck is the model that best explains most t-m variables, indicating that stabilizing selection or selective optima might be driving shifts in tendon length within Leptodactylidae. Herein, we show the substantial influence that phylogeny has on tendon morphology, demonstrating that a generalized and stable morphological configuration of tendons is adequate to enable versatile locomotor modes and habitat use. This is an attempt to present the tendinous system as a framework to body support in vertebrates, and can be considered a starting point for further ecomorphological research of this anatomical system in anurans.
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Affiliation(s)
- Jéssica Fratani
- Unidad Ejecutora Lillo (CONICET-Fundación Miguel Lillo), Tucumán, Argentina; Departamento de Vertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - María Laura Ponssa
- Unidad Ejecutora Lillo (CONICET-Fundación Miguel Lillo), Tucumán, Argentina.
| | - Virginia Abdala
- Instituto de Biodiversidad Neotropical UNT-CONICET, Universidad Nacional de Tucumán, Tucumán, Argentina.
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