1
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Kraus F. Redescription of Lepidodactylus flaviocularis (Squamata: Gekkonidae), with the description of a new species from Makira Island, Solomon Islands. Zootaxa 2023; 5339:562-576. [PMID: 38221397 DOI: 10.11646/zootaxa.5339.6.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Indexed: 01/16/2024]
Abstract
Several species of geckos of the genus Lepidodactylus are endemic to the Solomon Islands and very poorly known. I redescribe one of these, L. flaviocularis, from Guadalcanal, based on examination of a second, newly obtained specimen and quantification of diagnostically useful features of the digits. I also describe a closely related new species from nearby Makira Island in the southern Solomon Islands. Both species are distinguished by their large number of undivided subdigital lamellae, extensive toe webbing, and a continuous row of enlarged precloacal/femoral scales. The new species is distinguished from L. flaviocularis by a number of scalational features and the color of the circumorbial scales. Both species are inhabitants of interior forest, and it remains uncertain whether they are naturally rare, rare due to interactions with invasive species, or simply have cryptic ecological habits, though the last seems most likely. Current evidence for both species is consistent with the taxon-cycle hypothesis, which posits ecological displacement to inland habitats of ancient island inhabitants by newer colonizers, but this remains to be critically tested. The limited pool of specimens available for both species necessitates assessing the IUCN conservation status of each as Data Deficient.
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Affiliation(s)
- Fred Kraus
- Department of Ecology and Evolutionary Biology; University of Michigan; Ann Arbor; Michigan; U.S.A 48109.
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2
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Figueroa A, Low MEY, Lim KKP. Singapore's herpetofauna: updated and annotated checklist, history, conservation, and distribution. Zootaxa 2023; 5287:1-378. [PMID: 37518684 DOI: 10.11646/zootaxa.5287.1.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Indexed: 08/01/2023]
Abstract
Given Singapore's location at the confluence of important maritime trading routes, and that it was established as a British East India Company trading post in 1819, it is unsurprising that Singapore has become one of the centres of natural history collecting and research in Southeast Asia. Despite its small size, Singapore is home to a diverse herpetofauna assemblage and boasts a rich herpetological history. The first systematic studies of Singapore's herpetofauna (within the Linnaean binomial framework) date back to Stamford Raffles and the naturalists hired by him who first came to the island in 1819. Specimens that were collected during and after this time were deposited in museums worldwide. Over time, 39 species from Singapore were described as new to science. Due to the entrepôt nature of Singapore with its associated purchasing and trading of specimens (both alive and dead), poor record-keeping, and human introductions, numerous extraneous species from outside of Singapore were reported to occur on the island. Such issues have left a complicated legacy of ambiguous records and taxonomic complications concerning the identity of Singapore's species-rich herpetofauna, many of which were only resolved in the past 30-40 years. By compiling a comprehensive collection of records and publications relating to the herpetofauna of Singapore, we construct an updated and more accurate listing of the herpetofauna of Singapore. Our investigation culminated in the evaluation of 309 species, in which we compiled a final species checklist recognising 166 species (149 native and 17 non-native established species). Among the 149 native species are two caecilians, 24 frogs, one crocodilian, 13 turtles (three visitors), 34 lizards, and 75 snakes. Of the 17 non-native species are five frogs, four turtles, six lizards, and two snakes. The remaining 143 species represent species to be excluded from Singapore's herpetofauna species checklist. For each of the 309 species examined, we provide species accounts and explanatory annotations. Furthermore, we discuss Singapore's herpetofauna from a historical and conservation perspective. Immediate deforestation and nationwide urbanisation following colonisation completely eliminated many species from throughout much of the country and restricted them to small, degraded forest patches. We hope this publication highlights the importance of publishing observations and serves as a valuable resource to future researchers, naturalists, biological consultants, and policy makers in initiating studies on species ecology, distribution, status, and promoting conservation efforts to safeguard Singapore's herpetofauna.
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Affiliation(s)
| | - Martyn E Y Low
- Lee Kong Chian Natural History Museum; 2 Conservatory Drive; Singapore 117377.
| | - Kelvin K P Lim
- Lee Kong Chian Natural History Museum; 2 Conservatory Drive; Singapore 117377.
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3
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Escoriza D. Success factors of great oceanic dispersers: Case of Squamata in the Pacific Ocean. J Zool (1987) 2022. [DOI: 10.1111/jzo.13042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- D. Escoriza
- GRECO, Institute of Aquatic Ecology University of Girona, Campus de Montillivi Girona Spain
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4
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Wang HT, Qi S, Qiu XC, Li PP. First record of Lepidodactylus lugubris (Duméril & Bibron, 1836) (Squamata, Gekkonidae) from Hainan Island, China. HERPETOZOA 2022. [DOI: 10.3897/herpetozoa.35.e84045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Lepidodactylus lugubris is known from tropical Asia, Oceania, and Latin America, but in China it was previously known only from Taiwan Island. In this paper, we report a new herpetofaunal record based on one specimen collected from Wanning, Hainan, China, which conforms to L. lugubris on both morphological and molecular data. Our finding brings the total species of the family Gekkonidae in Hainan to six.
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5
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Mulcahy DG, Ibáñez R, Jaramillo CA, Crawford AJ, Ray JM, Gotte SW, Jacobs JF, Wynn AH, Gonzalez-Porter GP, McDiarmid RW, Crombie RI, Zug GR, de Queiroz K. DNA barcoding of the National Museum of Natural History reptile tissue holdings raises concerns about the use of natural history collections and the responsibilities of scientists in the molecular age. PLoS One 2022; 17:e0264930. [PMID: 35245325 PMCID: PMC8896674 DOI: 10.1371/journal.pone.0264930] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 02/22/2022] [Indexed: 01/09/2023] Open
Abstract
Natural history collections are essential to a wide variety of studies in biology because they maintain large collections of specimens and associated data, including genetic material (e.g., tissues) for DNA sequence data, yet they are currently under-funded and collection staff have high workloads. With the advent of aggregate databases and advances in sequencing technologies, there is an increased demand on collection staff for access to tissue samples and associated data. Scientists are rapidly developing large DNA barcode libraries, DNA sequences of specific genes for species across the tree of life, in order to document and conserve biodiversity. In doing so, mistakes are made. For instance, inconsistent taxonomic information is commonly taken from different lending institutions and deposited in data repositories, such as the Barcode of Life Database (BOLD) and GenBank, despite explicit disclaimers regarding the need for taxonomic verification by the lending institutions. Such errors can have profound effects on subsequent research based on these mis-labelled sequences in data repositories. Here, we present the production of a large DNA barcode library of reptiles from the National Museum of Natural History tissue holdings. The library contains 2,758 sequences (2,205 COI and 553 16S) from 2260 specimens (four crocodilians, 37 turtles, and 2,219 lizards, including snakes), representing 583 named species, from 52 countries. In generating this library, we noticed several common mistakes made by scientists depositing DNA barcode data in public repositories (e.g., BOLD and GenBank). Our goal is to raise awareness of these concerns and offer advice to avoid such mistakes in the future to maintain accurate DNA barcode libraries to properly document Earth’s biodiversity.
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Affiliation(s)
- Daniel G. Mulcahy
- Division of Amphibians and Reptiles, Department of Vertebrate Zoology, National Museum of Natural History, Washington, DC, United States of America
- * E-mail:
| | - Roberto Ibáñez
- Smithsonian Tropical Research Institute, Panama City, Republic of Panama
- Sistema Nacional de Investigación, SENACYT, Panamá City, República de Panamá
- Departamento de Zoología, Universidad de Panamá, Panamá City, República de Panamá
| | - Cesar A. Jaramillo
- Smithsonian Tropical Research Institute, Panama City, Republic of Panama
- Departamento de Histología y Neuroanatomía, Facultad de Medicina, Universidad de Panamá, Panamá City, República de Panamá
| | - Andrew J. Crawford
- Smithsonian Tropical Research Institute, Panama City, Republic of Panama
- Department of Biological Sciences, Museo de Historia Natural C.J. Marinkelle, Universidad de los Andes, Bogotá, Colombia
| | - Julie M. Ray
- Department of Biology, University of Nevada, Reno, Nevada, United States of America
| | - Steve W. Gotte
- Division of Amphibians and Reptiles, Department of Vertebrate Zoology, National Museum of Natural History, Washington, DC, United States of America
| | - Jeremy F. Jacobs
- Division of Amphibians and Reptiles, Department of Vertebrate Zoology, National Museum of Natural History, Washington, DC, United States of America
| | - Addison H. Wynn
- Division of Amphibians and Reptiles, Department of Vertebrate Zoology, National Museum of Natural History, Washington, DC, United States of America
| | | | - Roy W. McDiarmid
- Division of Amphibians and Reptiles, Department of Vertebrate Zoology, National Museum of Natural History, Washington, DC, United States of America
| | - Ronald I. Crombie
- Department of Herpetology, California Academy of Sciences, San Francisco, California, United States of America
| | - George R. Zug
- Division of Amphibians and Reptiles, Department of Vertebrate Zoology, National Museum of Natural History, Washington, DC, United States of America
| | - Kevin de Queiroz
- Division of Amphibians and Reptiles, Department of Vertebrate Zoology, National Museum of Natural History, Washington, DC, United States of America
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6
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Eliades SJ, Brown RM, Huang WS, Siler CD. Taxonomic Revision of Scaly-toed Geckos (Reptilia: Gekkonidae: Lepidodactylus) in the Northern Philippines, with Descriptions of Four New Species. HERPETOLOGICAL MONOGRAPHS 2021. [DOI: 10.1655/herpmonographs-d-19-00014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Samuel J. Eliades
- Sam Noble Oklahoma Museum of Natural History and Department of Biology, University of Oklahoma, 2401 Chautauqua Avenue, Norman, OK 73072–7029, USA
| | - Rafe M. Brown
- Biodiversity Institute and Department of Ecology and Evolutionary Biology; University of Kansas, 1345 Jayhawk Boulevard, Lawrence, KS 66045–7593, USA
| | - Wen-San Huang
- Department of Biology, National Museum of Natural Science, Taichung 404, Taiwan
| | - Cameron D. Siler
- Sam Noble Oklahoma Museum of Natural History and Department of Biology, University of Oklahoma, 2401 Chautauqua Avenue, Norman, OK 73072–7029, USA
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7
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Nania D, Flecks M, Rödder D. Continuous expansion of the geographic range linked to realized niche expansion in the invasive Mourning gecko Lepidodactylus lugubris (Duméril & Bibron, 1836). PLoS One 2020; 15:e0235060. [PMID: 32628687 PMCID: PMC7337341 DOI: 10.1371/journal.pone.0235060] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 06/07/2020] [Indexed: 12/02/2022] Open
Abstract
Lepidodactylus lugubris is a parthenogenetic gecko which has been increasingly expanding its range during the last century. This invasive species has been reported from multiple tropical and subtropical countries in five continents, most of which were colonized in recent times. In order to understand how the realized niche of the species was affected by this dramatic geographic range expansion, we reconstructed the history of the geographic range expansion. We built models of the realized niche of the species at different points in time during the invasion process. This was achieved through the implementation of modern hypervolume construction methods, based on the Hutchinson's niche concept. The models were then compared to detect possible realized climatic niche expansion over time. Furthermore, we investigated possible pathways used by the species to spread. A progressive expansion of the realized niche was identified. As the species spread into new areas, we observed a tendency to colonize regions with warmer temperatures and higher precipitation rates. Finally, we found evidence for cargo shipping being the major pathway through which the species expands its range. Further studies on this topic should aim to investigate the role of biological interactions, and how they shape the distribution of L. lugubris on a global scale. A deeper understanding of this kind of processes will help us tackle the issue of invasive species, which has become a major challenge in conservation biology.
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Affiliation(s)
- Dario Nania
- Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany
- Department of Biology and Biotechnology, Sapienza University of Rome, Rome, Italy
| | - Morris Flecks
- Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany
| | - Dennis Rödder
- Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany
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8
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Sakai O. Population Density of a Clonal Gecko Species in Its Northernmost Range, the Ryukyus in Japan. CURRENT HERPETOLOGY 2019. [DOI: 10.5358/hsj.38.180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Osamu Sakai
- Department of Zoology, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, JAPAN
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9
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Griffing AH, Sanger TJ, Daza JD, Nielsen SV, Pinto BJ, Stanley EL, Gamble T. Embryonic development of a parthenogenetic vertebrate, the mourning gecko (
Lepidodactylus lugubris
). Dev Dyn 2019; 248:1070-1090. [DOI: 10.1002/dvdy.72] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 06/10/2019] [Accepted: 06/11/2019] [Indexed: 12/11/2022] Open
Affiliation(s)
- Aaron H. Griffing
- Department of Biological SciencesMarquette University Milwaukee Wisconsin
| | - Thomas J. Sanger
- Department of BiologyLoyola University in Chicago Chicago Illinois
| | - Juan D. Daza
- Department of Biological SciencesSam Houston State University Huntsville Texas
| | - Stuart V. Nielsen
- Department of HerpetologyFlorida Museum of Natural History Gainesville Florida
| | - Brendan J. Pinto
- Department of Biological SciencesMarquette University Milwaukee Wisconsin
| | - Edward L. Stanley
- Department of HerpetologyFlorida Museum of Natural History Gainesville Florida
| | - Tony Gamble
- Department of Biological SciencesMarquette University Milwaukee Wisconsin
- Milwaukee Public Museum Milwaukee Wisconsin
- Bell Museum of Natural HistoryUniversity of Minnesota Saint Paul Minnesota
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10
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Murakami Y, Hayashi F. Molecular discrimination and phylogeographic patterns of clones of the parthenogenetic gecko
Lepidodactylus lugubris
in the Japanese Archipelago. POPUL ECOL 2019. [DOI: 10.1002/1438-390x.1030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yuki Murakami
- Department of BiologyTokyo Metropolitan University Tokyo Japan
| | - Fumio Hayashi
- Department of BiologyTokyo Metropolitan University Tokyo Japan
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11
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Murakami Y, Hayashi F. Behavioral Interactions for Food among Two Clones of ParthenogeneticLepidodactylus lugubrisand Sexually ReproducingHemidactylus frenatusGeckos. CURRENT HERPETOLOGY 2018. [DOI: 10.5358/hsj.37.124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Yuki Murakami
- Department of Biology, Tokyo Metropolitan University, Minamiosawa 1-1, Hachioji, Tokyo 192-0397, JAPAN
| | - Fumio Hayashi
- Department of Biology, Tokyo Metropolitan University, Minamiosawa 1-1, Hachioji, Tokyo 192-0397, JAPAN
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12
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Lapwong Y, Juthong W. New Records of Lepidodactylus lugubris (Duméril and Bibron, 1836) (Squamata, Gekkonidae) from Thailand and a Brief Revision of Its Clonal Composition in Southeast Asia. CURRENT HERPETOLOGY 2018. [DOI: 10.5358/hsj.37.143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Yingyod Lapwong
- School of Life Sciences, University of Technology Sydney, Broadway NSW 2007, AUSTRALIA
| | - Watinee Juthong
- Pitchalai Preparatory School, Hat Yai, Songkhla 90110, THAILAND
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13
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Abstract
Abstract
The developmental perspectives of animal personality enhance our understanding of how personality structure changes in relation to life stage. Clonal animals are ideal models for developmental studies because personality differences can be solely attributed to environmental factors. Here, I investigated the presence of personality within a species of clonal gecko, Lepidodactylus lugubris, at different developmental stages. For juveniles and adult geckos, I measured exploration (reaction to a novel situation) and boldness (risk-prone tendency) and evaluated repeatability and correlation of these behavioural traits. Each gecko exhibited different exploration and boldness with significant repeatability through time but no correlation between these behavioural traits. Small juveniles were composed of only bold and low explorative individuals but large juveniles and adults were composed of various personality type individuals. These results demonstrate that subject geckos have a similar personality structure across life stages and that exploration and boldness are independent personality without forming behavioural syndrome structure. Biased composition of personality type between life stages suggests that appearance of different personality type individuals during an early ontogenetic stage generates personality variation within the clonal population. This study provides developmental insight about personality structure and its composition in clonal animals living in the wild.
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14
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Jokela J, Lively CM, Fox JA, Dybdahl MF. FLAT REACTION NORMS AND "FROZEN" PHENOTYPIC VARIATION IN CLONAL SNAILS (POTAMOPYRGUS ANTIPODARUM). Evolution 2017; 51:1120-1129. [PMID: 28565497 DOI: 10.1111/j.1558-5646.1997.tb03959.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/1996] [Accepted: 04/21/1997] [Indexed: 11/27/2022]
Abstract
The Frozen Niche-Variation hypothesis (FNV) suggests that clones randomly sample and "freeze" the genotypes of their ancestral sexual populations. Hence, each clone expresses only a fraction of the total niche-use variation observed in the sexual population, which may lead to selection for ecological specialization and coexistence of clones. A generalized form of the FNV model suggests that the same is true for life-history (as well as other) traits that have important fitness consequences, but do not relate directly to niche use. We refer to the general form of the model as the Frozen Phenotypic Variation (FPV) model. A mixed population of sexual and parthenogenetic snails (Potamopyrgus antipodarum) in a New Zealand lake allowed us to examine the phenotypic variation expressed by coexisting clones in two benthic habitats, and to compare that variation to the sexual population. Three clones were found primarily in an aquatic macrophyte zone composed of Isoetes kirkii (1.5-3.0 m deep), and three additional clones were found in a deeper macrophyte zone composed of Elodea canadensis (4.0-6.0 m deep). These clones showed significant variation between habitats, which mirrored that observed in the sexual population. Specifically, clones and sexuals from the deeper habitat matured at a larger size and had larger broods. There was also significant among-clone variation within habitats; and as expected under the FPV model, the within-clone coefficients of variation for size at maturity were low in both habitats when compared to the sexual population. In addition, we found four clones that were common in both macrophyte zones. The reaction norms of these clones were flat across habitats, suggesting little phenotypic plasticity for morphology or life-history traits. Flat reaction norms, high among-clone variation, and low coefficients of variation (relative to the sexual population) are in accordance with the FPV model for the origin of clonal lineages. We also measured the prevalence of infection by trematode larvae to determine whether clones are inherently more or less infectable, or whether they are freezing phenotypic variation for resistance from the sexual population. We did this in the deep habitats of the lake where recycling of the parasite by the vertebrate host is unlikely, thereby reducing the complications raised by frequency-dependent responses of parasites to host genotypes. We found no indication that clones are either more or less infectable than the resident sexual population. Taken together, our results suggest that phenotypic variation for both life-history traits and resistance to parasites is frozen by clones from the local sexual population.
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Affiliation(s)
- Jukka Jokela
- Department of Biology, Indiana University, Bloomington, Indiana, 47405
| | - Curtis M Lively
- Department of Biology, Indiana University, Bloomington, Indiana, 47405
| | - Jennifer A Fox
- Department of Biology, Indiana University, Bloomington, Indiana, 47405
| | - Mark F Dybdahl
- Department of Biology, Indiana University, Bloomington, Indiana, 47405
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15
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Petren K, Case TJ. A PHYLOGENETIC ANALYSIS OF BODY SIZE EVOLUTION AND BIOGEOGRAPHY IN CHUCKWALLAS (SAUROMALUS) AND OTHER IGUANINES. Evolution 2017; 51:206-219. [PMID: 28568786 DOI: 10.1111/j.1558-5646.1997.tb02402.x] [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: 03/01/1996] [Accepted: 09/17/1996] [Indexed: 11/28/2022]
Abstract
The evolution of body size was reconstructed in chuckwallas (genus Sauromalus), large herbivorous lizards of southwest North America, using a phylogeny derived from sequence variation in the mitochondrial cytochrome b gene. The body mass of two endemic island species (S. hispidus and S. varius) is typically fivefold larger than mainland species. We tested the hypothesis that large body size has evolved on these islands in response to local ecological conditions against the alternative hypothesis that large size is simply retained from large iguanine ancestors. The most parsimonious tree topology depicts the insular gigantic Sauromalus as monophyletic, having diverged from a common ancestor on the Baja California peninsula after the radiation of smaller bodied clades. In a robustness analysis of this topology, we found general support for this tree over alternative topologies representing minimum evolution hypotheses that imply large body size is retained from large iguanine ancestors. The most parsimonious reconstruction of body size evolution implies a change from large to small size after the Sauromalus ancestor diverged from Iguana, and one reversal back to large size within Sauromalus. The large size increase in the gigantic clade contrasts with evolutionary stasis of small body size (for an iguanine) in mainland populations. The gigantic species show 3-4% total sequence divergence from S. obesus populations on the nearby Baja California peninsula, and mainland populations of S. obesus obesus show similar levels of divergence from each other. An analysis of character transitions and comparative behavior implicates predation, and its relaxation on isolated islands, as a strong selective force in Sauromalus. Patterns of genetic differentiation in Sauromalus and biogeographic implications are discussed.
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Affiliation(s)
- Kenneth Petren
- Department of Biology, University of California at San Diego, La Jolla, California, 92093-0116
| | - Ted J Case
- Department of Biology, University of California at San Diego, La Jolla, California, 92093-0116
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16
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Hanley KA, Fisher RN, Case TJ. LOWER MITE INFESTATIONS IN AN ASEXUAL GECKO COMPARED WITH ITS SEXUAL ANCESTORS. Evolution 2017; 49:418-426. [PMID: 28565091 DOI: 10.1111/j.1558-5646.1995.tb02274.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/1993] [Accepted: 11/16/1993] [Indexed: 11/28/2022]
Abstract
What advantage do sexually reproducing organisms gain from their mode of reproduction that compensates for their twofold loss in reproductive rate relative to their asexual counterparts? One version of the Red Queen hypothesis suggests that selective pressure from parasites is strongest on the most common genotype in a population, and thus genetically identical clonal lineages are more vulnerable to parasitism over time than genetically diverse sexual lineages. Our surveys of the ectoparasites of an asexual gecko and its two sexual ancestral species show that the sexuals have a higher prevalence, abundance, and mean intensity of mites than asexuals sharing the same habitat. Our experimental data indicate that in one sexual/asexual pair this pattern is at least partly attributable to higher attachment rates of mites to sexuals. Such a difference may occur as a result of exceptionally high susceptibility of the sexuals to mites because of their low genetic diversity (relative to other more-outbred sexual species) and their potentially high stress levels, or as a result of exceptionally low susceptibility of the asexuals to mites because of their high levels of heterozygosity.
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Affiliation(s)
- Kathryn A Hanley
- Department of Biology-0116, University of California at San Diego, La Jolla, California, 92093-0116
| | - Robert N Fisher
- Department of Biology-0116, University of California at San Diego, La Jolla, California, 92093-0116
| | - Ted J Case
- Department of Biology-0116, University of California at San Diego, La Jolla, California, 92093-0116
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17
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Vrijenhoek RC, Pfeiler E. DIFFERENTIAL SURVIVAL OF SEXUAL AND ASEXUAL
POECILIOPSIS
DURING ENVIRONMENTAL STRESS. Evolution 2017; 51:1593-1600. [DOI: 10.1111/j.1558-5646.1997.tb01482.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/1997] [Accepted: 06/03/1997] [Indexed: 12/01/2022]
Affiliation(s)
- Robert C. Vrijenhoek
- Center for Theoretical and Applied Genetics Rutgers University New Brunswick New Jersey 08903‐0231
| | - Edward Pfeiler
- Departamento de Ciencias Marinas Instituto Tecnológico y de Estudios Superiores de Monterrey Guaymas Sonora 85400 Mexico
- Department of Biology Arizona State University Tempe Arizona 85287‐1501 Mexico
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18
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Radtkey RR. ADAPTIVE RADIATION OF DAY-GECKOS (PHELSUMA) IN THE SEYCHELLES ARCHIPELAGO: A PHYLOGENETIC ANALYSIS. Evolution 2017; 50:604-623. [PMID: 28568942 DOI: 10.1111/j.1558-5646.1996.tb03872.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/1994] [Accepted: 04/18/1995] [Indexed: 11/26/2022]
Abstract
A phylogenetic analysis using characters derived from mitochondrial DNA was used to show that the species of Phelsuma in the Seychelles Islands represent a single, monophyletic lineage that has diversified as a result of both historical and ecological factors. In the distant past, the Seychelles archipelago was physically invaded by a single species of Phesluma. Separate eustatic sea level changes likely led first to allopatric speciation and then to the secondary contact of these sister species. Differences in the relative timing of the secondary contact between island groups resulted in P. sundbergi evolving an intermediate body size in the group of islands associated with Mahé and a large body size, while sympatric with P. astriata, in the group of islands associated with Praslin. Ecological information was used to support the conclusion that the actual evolutionary mechanism for the body size shift was a response to frequency dependent natural selection of P. sundbergi in single-species and two-species competitive regimes.
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Affiliation(s)
- Ray R Radtkey
- Department of Zoology, University of Texas at Austin, Austin, Texas, 78712
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19
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Fisher RN. DISPERSAL AND EVOLUTION OF THE PACIFIC BASIN GEKKONID LIZARDS GEHYRA OCEANICA
AND GEHYRA MUTILATA. Evolution 2017; 51:906-921. [DOI: 10.1111/j.1558-5646.1997.tb03672.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/1995] [Accepted: 12/20/1996] [Indexed: 11/29/2022]
Affiliation(s)
- Robert N. Fisher
- Section of Evolution and Ecology; University of California at Davis; Davis California 95616
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Sakai O. Size Distribution Suggests a Seasonal Effect on Reproduction ofLepidodactylus lugubrison Okinawajima Island, Japan, the Northernmost Distributional Area. CURRENT HERPETOLOGY 2016. [DOI: 10.5358/hsj.35.59] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Trifonov VA, Paoletti A, Caputo Barucchi V, Kalinina T, O’Brien PCM, Ferguson-Smith MA, Giovannotti M. Comparative Chromosome Painting and NOR Distribution Suggest a Complex Hybrid Origin of Triploid Lepidodactylus lugubris (Gekkonidae). PLoS One 2015; 10:e0132380. [PMID: 26148117 PMCID: PMC4492922 DOI: 10.1371/journal.pone.0132380] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 06/13/2015] [Indexed: 11/24/2022] Open
Abstract
Parthenogenesis, unisexuality and triploidy are interesting but poorly studied phenomena occurring in some reptile species. The mourning gecko (Lepidodactylus lugubris) represents a complex of diploid and triploid parthenogenetic mostly all-female populations (males occur quite rarely) widely distributed in coastal areas of the Indian and Pacific Oceans. Here, we study karyotypes of a male and two female L. lugubris (LLU) triploid individuals (3n = 66) using comparative painting with Gekko japonicus, Hemidactylus turcicus and H. platyurus chromosome specific probes to visualize the homologous regions and to reveal genus specific rearrangements. Also, we applied a 28S ribosomal DNA probe and Ag-staining to detect nucleolus organizer regions (NORs). Our results suggest that the karyotype of L. lugubris underwent a chromosome fission and a fusion after its divergence from a common ancestor of the Gekko-Hemidactylus group. The NORs were found to be located on one out of three homologs on each of LLU8, LLU15 and LLU18, thus further confirming a hybrid origin of triploid individuals. It seems that three different bisexual populations might have contributed to the origin of this triploid parthenogenetic population. We postulate that the heterozygosity in NOR localization is maintained in the triploid clone studied by the absence of recombination as described in whiptail lizards. The pattern of NOR localizations and homologous regions in males and females, as well as the absence of other detectable karyotypic differences, suggest that males arise spontaneously in all female populations and do not arise from independent hybridizations with different species.
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Affiliation(s)
- Vladimir A. Trifonov
- Institute of Molecular and Cellular Biology SB RAS, Novosibirsk, Russia
- Novosibirsk State University, Novosibirsk, Russia
- * E-mail:
| | - Alessio Paoletti
- Dipartimento di Scienze della Vita e dell’Ambiente, Università Politecnica delle Marche, Ancona, Italy
| | - Vincenzo Caputo Barucchi
- Dipartimento di Scienze della Vita e dell’Ambiente, Università Politecnica delle Marche, Ancona, Italy
- Consiglio Nazionale delle Ricerche, Istituto di Scienze Marine Sezione Pesca Marittima,Ancona, Italy
| | - Tatiana Kalinina
- Institute of Molecular and Cellular Biology SB RAS, Novosibirsk, Russia
- Novosibirsk State University, Novosibirsk, Russia
| | - Patricia C. M. O’Brien
- Cambridge Resource Centre for Comparative Genomics, University of Cambridge, Cambridge, United Kingdom
| | - Malcolm A. Ferguson-Smith
- Cambridge Resource Centre for Comparative Genomics, University of Cambridge, Cambridge, United Kingdom
| | - Massimo Giovannotti
- Dipartimento di Scienze della Vita e dell’Ambiente, Università Politecnica delle Marche, Ancona, Italy
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22
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Population genetic structure and distribution patterns of sexual and asexual gecko species in the Ogasawara Islands. Ecol Res 2015. [DOI: 10.1007/s11284-015-1246-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Combosch DJ, Vollmer SV. Mixed asexual and sexual reproduction in the Indo-Pacific reef coral Pocillopora damicornis. Ecol Evol 2013; 3:3379-87. [PMID: 24223276 PMCID: PMC3797485 DOI: 10.1002/ece3.721] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 07/11/2013] [Accepted: 07/12/2013] [Indexed: 11/21/2022] Open
Abstract
Pocillopora damicornis is one of the best studied reef-building corals, yet it's somewhat unique reproductive strategy remains poorly understood. Genetic studies indicate that P. damicornis larvae are produced almost exclusively parthenogenetically, and yet population genetic surveys suggest frequent sexual reproduction. Using microsatellite data from over 580 larvae from 13 colonies, we demonstrate that P. damicornis displays a mixed reproductive strategy where sexual and asexual larvae are produced simultaneously within the same colony. The majority of larvae were parthenogenetic (94%), but most colonies (10 of the 13) produced a subset of their larvae sexually. Logistic regression indicates that the proportion of sexual larvae varied significantly with colony size, cycle day, and calendar day. In particular, the decrease in sexual larvae with colony size suggests that the mixed reproductive strategy changes across the life of the coral. This unique shift in reproductive strategy leads to increasingly asexual replications of successful genotypes, which (in contrast to exclusive parthenogens) have already contributed to the recombinant gene pool.
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Affiliation(s)
- David J Combosch
- Marine and Environmental Sciences, Northeastern University Nahant, Massachusetts, 01908
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24
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Boldness underlies foraging success of invasive Lepidodactylus lugubris geckos in the human landscape. Anim Behav 2008. [DOI: 10.1016/j.anbehav.2008.04.008] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Röll B, von Düring MU. Sexual characteristics and spermatogenesis in males of the parthenogenetic gecko Lepidodactylus lugubris (Reptilia, Gekkonidae). ZOOLOGY 2008; 111:385-400. [DOI: 10.1016/j.zool.2007.09.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2007] [Revised: 09/21/2007] [Accepted: 09/24/2007] [Indexed: 10/22/2022]
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26
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Dame EA, Petren K. Behavioural mechanisms of invasion and displacement in Pacific island geckos (Hemidactylus). Anim Behav 2006. [DOI: 10.1016/j.anbehav.2005.10.009] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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27
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Tagg N, Innes DJ, Doncaster CP. Outcomes of reciprocal invasions between genetically diverse and genetically uniform populations of Daphnia obtusa (Kurz). Oecologia 2005; 143:527-36. [PMID: 15909133 DOI: 10.1007/s00442-005-0016-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2004] [Accepted: 01/19/2005] [Indexed: 10/25/2022]
Abstract
Ecological theory predicts that genetic variation produced by sexual reproduction results in niche diversification and provides a competitive advantage both to facilitate invasion into genetically uniform asexual populations and to withstand invasion by asexual competitors. We tested the hypothesis that a large group of diverse clones of Daphnia obtusa has greater competitive advantage when invading into genetically uniform populations of this species than a smaller group with inherently less genetic diversity. We compared competitive outcomes to those of genetically uniform groups of small and large size invading into genetically diverse populations. Genetically diverse invaders of initially large group size increased their representation by more than those of initially small size; in contrast, genetically uniform invaders of initially large group size diminished on average by more than those of initially small size. These results demonstrate an advantage to the genetic variation produced by sexual reproduction, both in invasion and resisting invasion, which we attribute to competitive release experienced by individuals in genetically diverse populations.
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Affiliation(s)
- N Tagg
- School of Biological Sciences, University of Southampton, Southampton, SO16 7PX, UK
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28
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Wilmhoff CD, Csepeggi CE, Petren K. Characterization of dinucleotide microsatellite markers in the parthenogenetic mourning gecko (Lepidodactylus lugubris). ACTA ACUST UNITED AC 2003. [DOI: 10.1046/j.1471-8286.2003.00459.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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29
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Genetic Homogeneity between Populations of Aspidoscelis rodecki, a Parthenogenetic Lizard from the Yucatán Peninsula. J HERPETOL 2003. [DOI: 10.1670/262-01n] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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30
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Wirtz P. Mother species-father species: unidirectional hybridization in animals with female choice. Anim Behav 1999; 58:1-12. [PMID: 10413535 DOI: 10.1006/anbe.1999.1144] [Citation(s) in RCA: 350] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
As mitochondria are inherited in a matrilinear way, an animal hybrid contains the mitochondrial DNA of its 'mother species'. Of 80 studies that analysed the mitochondrial DNA of at least five hybrid individuals, 50 showed that all hybrids contained the mitochondrial DNA of only one of the two parental species, indicating either mating of females of species A with males of species B but not vice versa (unidirectional hybridization) or the disappearance of one of the two parental mtDNA types after reciprocal hybridization. I review and discuss factors promoting unidirectional or reciprocal hybridization and present a sexual selection hypothesis for unidirectional hybridization. The inequality of the sexes in parental investment leads to the sex that invests more being the more discriminating one. In the presence of conspecific males, females reject allospecific males and, consequently, a male in an environment of both allospecific sexes is unlikely to mate, while in the absence of conspecific males, females sometimes accept fertilizations by males of other species. Thus, hybrid matings are usually between the females of a rare species and the males of a common species, but not vice versa. Copyright 1999 The Association for the Study of Animal Behaviour.
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Affiliation(s)
- P Wirtz
- Max Planck Institut für Verhaltensphysiologie, UAbteilung Wickler
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31
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Kizirian DA, Cole CJ. Origin of the unisexual lizard Gymnophthalmus underwoodi (Gymnophthalmidae) inferred from mitochondrial DNA nucleotide sequences. Mol Phylogenet Evol 1999; 11:394-400. [PMID: 10196080 DOI: 10.1006/mpev.1998.0591] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Analysis of variation in nucleotide sequences in mitochondrial DNA genes among species of Gymnophthalmus supports three major conclusions. First, samples of G. underwoodi, a unisexual species of hybrid origin, have identical nucleotide sequences, supporting the hypothesis that all individuals from localities in the Guianan Region of South America and the Lesser Antilles descended from a single hybridization event. Second, G. underwoodi and G. cryptus share derived similarities in nucleotide sequences of the maternally inherited mitochondrial DNA, suggesting that the female participant in the hybridization event that produced the hybrid species was either G. cryptus or most closely related to it. Last, phylogenetic analyses recovered historical structure among population samples of G. speciosus supporting previous claims that there is unrecognized diversity under that binomial, and some analyses suggest that G. speciosus does not comprise a natural group.
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Affiliation(s)
- D A Kizirian
- Department of Herpetology, Department of Ornithology, American Museum of Natural History, Central Park West at 79th Street, New York, New York, 10024-5192, USA
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Dowling TE, Secor ACL. THE ROLE OF HYBRIDIZATION AND INTROGRESSION IN THE DIVERSIFICATION OF ANIMALS. ACTA ACUST UNITED AC 1997. [DOI: 10.1146/annurev.ecolsys.28.1.593] [Citation(s) in RCA: 477] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Thomas E. Dowling
- Department of Biology, Arizona State University, Tempe, Arizona; 85287-1501 e-mail: ,
| | - and Carol L. Secor
- Department of Biology, Arizona State University, Tempe, Arizona; 85287-1501 e-mail: ,
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Radtkey RR, Fallon SM, Case TJ. Character displacement in some Cnemidophorus lizards revisited: a phylogenetic analysis. Proc Natl Acad Sci U S A 1997; 94:9740-5. [PMID: 9275194 PMCID: PMC23260 DOI: 10.1073/pnas.94.18.9740] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Ecological studies have demonstrated the role of competition in structuring communities; however, the importance of competition as a vehicle for evolution by natural selection and speciation remains unresolved. Study systems of insular faunas have provided several well known cases where ecological character displacement, coevolution of competitors leading to increased morphological separation, is thought to have occurred (e.g., anoline lizards and geospizine finches). Whiptail lizards (genus Cnemidophorus) from the islands of the Sea of Cortez and the surrounding mainland demonstrate a biogeographic pattern of morphological variation suggestive of character displacement. Two species of Cnemidophorus occur on the Baja peninsula, one relatively large (Cnemidophorus tigris) and one smaller (Cnemidophorus hyperythrus). Oceanic islands in the Sea of Cortez contain only single species, five of six having sizes intermediate to both species found on the Baja peninsula. On mainland Mexico C. hyperythrus is absent, whereas C. tigris is the smaller species in whiptail guilds. Here we construct a phylogeny using nucleotide sequences of the cytochrome b gene to infer the evolutionary history of body size change and historical patterns of colonization in the Cnemidophorus system. The phylogenetic analysis indicates that (i) oceanic islands have been founded at least five times from mainland sources by relatives of either C. tigris or C. hyperythrus, (ii) there have been two separate instances of character relaxation on oceanic islands for C. tigris, and (iii) there has been colonization of the oceanic island Cerralvo with retention of ancestral size for Cnemidophorus ceralbensis, a relative of C. hyperythrus. Finally, the phylogenetic analysis reveals potential cryptic species within mainland populations of C. tigris.
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Affiliation(s)
- R R Radtkey
- Department of Biology-0116, University of California at San Diego, La Jolla, CA 92093-0116, USA.
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35
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Morphological and genetic evolution appear decoupled in Pacific skinks (Squamata : Scincidae :
Emoia
). Proc Biol Sci 1997. [DOI: 10.1098/rspb.1996.0102] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Radtkey RR, Becker B, Miller RD, Riblet R, Case TJ. Variation and evolution of class I Mhc in sexual and parthenogenetic geckos. Proc Biol Sci 1996; 263:1023-32. [PMID: 8805837 DOI: 10.1098/rspb.1996.0151] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
We present the first Mhc class I sequences in geckos. We compared Mhc variation in gekkonid species that reproduce sexually (Hemidactylus frenatus, Lepidodactylus aureolineatus, L. moestus, L. sp. Arno, L. sp. Takapoto) to others reproducing parthenogenetically (H. garnotii, L. lugubris). These comparisons include the known maternal (L. moestus) and paternal (L. sp. Arno) ancestors of the asexual L. lugubris. Sequences similar to other vertebrate species were obtained from both nuclear and cDNA templates indicating that these sequences are derived from expressed class I Mhc loci. Southern blot analysis using gecko class I probes, revealed that parthenogenetic clonal lineages of independent evolutionary origin have no within-clone band variation at class I loci and that no detectable recombination between restriction sites had taken place. Variability in the sexual species was similar to mammalian taxa, i.e. class I genes are highly variable in outbreeding sexual populations. Sequence analysis of the alpha-2 domain of class I genes identified point mutations in a clonal lineage of L. lugubris which led to amino acid substitutions. Potential transspecific allelic lineages were also observed. The persistence of asexual lineages with little or no class I diversification over thousands of generations seems to argue against strong selection for Mhc multi-allelism caused by pathogen-Mhc allele specificity. On the other hand, the high level of heterozygosity in the parthenogenetic species (a consequence of their hybrid origin) may provide clonal lineages with adequate antigen presenting diversity to survive and compete with sexual relatives.
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Affiliation(s)
- R R Radtkey
- Department of Biology-0116, University of California, San Diego, La Jolla 92093-0116, USA
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Ota H, Hikida T, Matsui M, Chan-Ard T, Nabhitabhata J. Discovery of a diploid population of theHemidactylus garnotii-vietnamensis complex (Reptilia: Gekkonidae). Genetica 1996. [DOI: 10.1007/bf00132584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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