DOCSLIB.ORG

Population Dynamics of Tropidurus Torquatus

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Population Dynamics of Tropidurus Torquatus Population Dynamics of Tropidurus torquatus (Wied, 1820) (Squamata, Tropiduridae) in Southern Brazil Author(s): Renata Cardoso Vieira, Jéssica Francine Felappi, Rodrigo Caruccio and Laura Verrastro Source: South American Journal of Herpetology, 6(3):215-222. Published By: Brazilian Society of Herpetology DOI: http://dx.doi.org/10.2994/057.006.0308 URL: http://www.bioone.org/doi/full/10.2994/057.006.0308 BioOne (www.bioone.org) is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Web site, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/page/terms_of_use. Usage of BioOne content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. South American Journal of Herpetology, 6(3), 2011, 215-222 © 2011 Brazilian Society of Herpetology POPULATION DYNAMICS OF TROPIDURUS TORQUATUS (WIED, 1820) (SQUAMATA, TROPIDURIDAE) IN SOUTHERN BRAZIL RENATA CARDOSO VIEIRA1,2,6; JÉSSICA FRANCINE FELAPPI1,3; RODRIGO CARUCCIO1,4, AND LAURA VERRASTRO1,5 1. Departamento de Zoologia, Universidade Federal do Rio Grande do Sul. Porto Alegre, Brasil. 2. E-mail: [email protected] 3. E-mail: [email protected] 4. E-mail: [email protected] 5. E-mail: [email protected] 6. Corresponding author ABSTRACT. Population dynamics of the lizard Tropidurus torquatus was studied between May 2008 and June 2009 in a rocky for- mation in Alegrete municipality, Rio Grande do Sul state, southern Brazil. The study was carried out using the capture, marking and recapture method, the area being randomly searched from 08:00 am to 6:00 pm. Tropidurus torquatus presented variation in population structure throughout the study period, with maximum biomass observed in October 2008 and maximum density oc- curring in November 2008 (reproductive season), both having a second peak in March 2009 (recruitment period). There was a significant difference between the number of juveniles and adults recorded, since adults were present throughout the study period while juveniles were present in the months after recruitment. The difference found between males and females may be related to a social territorial behavior of the males. The population of Tropidurus torquatus presented a cyclic and seasonal variation in popula- tion structure, possibly associated with the reproductive cycle of the species, with differences in the distribution of age classes and sexual proportions throughout the year. KEY-WORDS. Tropidurus, population structure, sex ratio, age classes, social behavior. INTRODUCTION feeding behavior (Fialho et al., 2000; Carvalho et al., 2007). However, all these studies have been carried The lizard genus Tropidurus comprises 21 species out in the Central-East and Southeast regions of Brazil. distributed in four groups (spinulosus, bogerti, semi- The comparison of the biology of species with taeniatus, and torquatus) (Meira et al., 2007). The wide ranges spanning different environmental con- torquatus group has species that are, generally, helio- ditions is important to determine adaptive biological phylous, diurnal, and predominantly insectivores, and factors (Meira et al., 2007). Intraspecific variations of these species have great ecological plasticity since they life history strategies have shown the importance of occur in wide open areas with rocky outcrops, sand identifying differences of local environmental factors dunes and savannas (Vitt and Goldberg, 1983; Ro- and the influence of these on available ecological re- drigues, 1987; Vitt, 1993; Zerbini, 1998; Frost et al., sources, allowing one to formulate hypothesis about 2001; Faria and Araújo, 2004). Tropidurus torquatus the evolution of life history strategies of different Wied, 1820 is popularly known as the collared lizard groups (Niewiarowski, 1994). and belongs to the torquatus group (Frost, 1992; Frost In addition, as the information on lizard ecology et al. 2001). This species is distributed from south to increases, it is possible to identify which parameters northeast Brazil, reaching the south of Bahia State. It allow a population of a given species to occupy and occurs in continental open areas, on the coast or on is- perpetuate itself over time in a specific habitat (Ball- lands and its populations are generally abundant where inger, 1983; Huey and Pianka, 1983). Population and it is found. In Rio Grande do Sul State, it lives on rocky life history characteristics of lizards can vary among outcrops in campos formations of the Pampa Biome, tropical and temperate species (Rocha, 1998). The presenting diurnal habit and territorial behavior (Ro- parameters of life strategies (population size and drigues, 1987; Rocha, 2000; Carreira et al., 2005). density, growth, mortality, reproduction) can be re- Studies with this species generally focus on eco- lated to pluviosity in species occurring in tropical, logical aspects including sexual dimorphism (Pinto semi-arid or arid environments, while temperature et al., 2005), reproduction (Gomides et al., 2006; Wie- can affect species occurring in temperate environ- derhecker et al., 2002), demography (Wiederhecker ments (James and Shine, 1985; Magnusson, 1987; et al., 2003), activity patterns (Hatano et al., 2001), Rocha, 1992; Clerke and Alford, 1993; Vitt and Zani, thermal ecology (Kiefer et al., 2005; Kiefer et al., 1996; Verrastro and Krause, 1999; Verrastro, 2001; 2007; Nunes et al., 2007; Ribeiro et al., 2007), and Wiederhecker et al, 2002). There is an important 216 Population dynamics of Tropidurus torquatus phylogenetic component that shows that many lizard classified as humid sub-temperate, with mean annual genera and families keep a correspondence and con- rainfall of 1574 mm, mean annual temperature of servativeness in terms of life histories characteristics 18.6°C (Maluf, 2000). Rainfall is distributed evenly (Crowley, 1985; Herrel et al., 1990; Colli and Paiva, throughout the year and seasons are easily defined 1997; Andrews, 1998; Mesquita and Colli, 2003, by temperature (summer: mean minimum tempera- Kiefer et al., 2005). Even if a phylogenetic tendency ture of 21.2°C, mean maximum temperature of 33°C; exists, it has been verified, in some cases, that the en- winter: mean minimum temperature of 14°C, mean vironment can influence the local expression of some maximum temperature of 23.3°C); maximum altitude parameters (Pianka, 1970; Hertz et al., 1982; Jaksic reaches 116 m. and Schwenk, 1983; Huey et al., 1977; Adolph and The study site is located at 55°24’59”W, Porter, 1993; Andrews, 1998). 29°58’42”S and presents two main vegetation types: Mesquita et al. (2007), recorded differences in grasslands with trees (native grasslands) and the allu- habitat utilization among different populations of vial deciduous seasonal forest (riparian forest) (Bold- the same species of Tropidurus, but didn’t find these rini, 1997). The study area was specifically character- same differences between genera. This suggests that ized by the presence of rocky outcrops located in a different evolutionary lineages respond differently to grassland environment. It has a total area of 1.9ha, the pressure of environmental factors, and tropidur- 108 m in altitude and vegetation composed mainly ids would be more affected by ecological factors than by bushes and grasses. While the study was being other genera (Cruz et al. 1998). carried out, this area was used for silviculture (Euc- The broad distribution of T. torquatus along dif- aliptus sp), and trees were seeded closely to the rocky ferent areas and environments and its adaptation to outcrops, in a distance between 5-20 m. several types of open habitats such as rocky outcrops, The field work was carried out monthly between coastal sand dunes or gallery forest borders (Vitt and May 2008 and June 2009, with one day of field work Goldberg, 1983; Rodrigues, 1987; Vitt 1993; Zerbini each month. Individuals were captured by hand us- 1998; Frost et al. 2001; Faria and Araújo 2004) raises ing the capture, marking and recapture method. The a question about the existence of variation in popu- area was searched randomly between 08:00 am and lation structure of the species along its range. The 06:00 pm. Each captured lizard was marked with a comparison of population studies encompassing sev- field number. For each capture we recorded age class, eral types of habitats along the species range would sex, snout-vent-length (SVL, using a Mitutoyo® cal- provide better data to answer this question. There are iper with a precision of 0.02 mm) and mass (using three studies regarding the population demography of Pesola® scales of 30 g and 600 g, with precisions of the genus Tropidurus (T. itambere – Van-Sluys, 2000; 0.2 g and 0.5 g, respectively). T. torquatus – Wiederhecker et al., 2003; Van-Sluys Age classes were divided into adults and juveniles. et al., 2010). Additionally, Arruda (2009) carried out Adults were identified according to the
Load more

Recommended publications
  • Helminths from Lizards (Reptilia: Squamata) at the Cerrado of Goiás State, Brazil Author(S): Robson W
    Helminths from Lizards (Reptilia: Squamata) at the Cerrado of Goiás State, Brazil Author(s): Robson W. Ávila, Manoela W. Cardoso, Fabrício H. Oda, and Reinaldo J. da Silva Source: Comparative Parasitology, 78(1):120-128. 2011. Published By: The Helminthological Society of Washington DOI: 10.1654/4472.1 URL: http://www.bioone.org/doi/full/10.1654/4472.1 BioOne (www.bioone.org) is an electronic aggregator of bioscience research content, and the online home to over 160 journals and books published by not-for-profit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Web site, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/page/terms_of_use. Usage of BioOne content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. Comp. Parasitol. 78(1), 2011, pp. 120–128 Helminths from Lizards (Reptilia: Squamata) at the Cerrado of Goia´s State, Brazil 1,4 2 3 1 ROBSON W. A´ VILA, MANOELA W. CARDOSO, FABRI´CIO H. ODA, AND REINALDO J. DA SILVA 1 Departamento de Parasitologia, Instituto de Biocieˆncias, UNESP, Distrito de Rubia˜o Jr., CEP 18618-000, Botucatu, SP, Brazil, 2 Departamento de Vertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, CEP 20940- 040, Rio de Janeiro, RJ, Brazil, and 3 Universidade Federal de Goia´s–UFG, Laborato´rio de Comportamento Animal, Instituto de Cieˆncias Biolo´gicas, Campus Samambaia, Conjunto Itatiaia, CEP 74000-970.
    [Show full text]
  • Microhabitat Selection of the Poorly Known Lizard Tropidurus Lagunablanca (Squamata: Tropiduridae) in the Pantanal, Brazil
    ARTICLE Microhabitat selection of the poorly known lizard Tropidurus lagunablanca (Squamata: Tropiduridae) in the Pantanal, Brazil Ronildo Alves Benício¹; Daniel Cunha Passos²; Abraham Mencía³ & Zaida Ortega⁴ ¹ Universidade Regional do Cariri (URCA), Centro de Ciências Biológicas e da Saúde (CCBS), Departamento de Ciências Biológicas (DCB), Laboratório de Herpetologia, Programa de Pós-Graduação em Diversidade Biológica e Recursos Naturais (PPGDR). Crato, CE, Brasil. ORCID: http://orcid.org/0000-0002-7928-2172. E-mail: [email protected] (corresponding author) ² Universidade Federal Rural do Semi-Árido (UFERSA), Centro de Ciências Biológicas e da Saúde (CCBS), Departamento de Biociências (DBIO), Laboratório de Ecologia e Comportamento Animal (LECA), Programa de Pós-Graduação em Ecologia e Conservação (PPGEC). Mossoró, RN, Brasil. ORCID: http://orcid.org/0000-0002-4378-4496. E-mail: [email protected] ³ Universidade Federal de Mato Grosso do Sul (UFMS), Instituto de Biociências (INBIO), Programa de Pós-Graduação em Biologia Animal (PPGBA). Campo Grande, MS, Brasil. ORCID: http://orcid.org/0000-0001-5579-2031. E-mail: [email protected] ⁴ Universidade Federal de Mato Grosso do Sul (UFMS), Instituto de Biociências (INBIO), Programa de Pós-Graduação em Ecologia e Conservação (PPGEC). Campo Grande, MS, Brasil. ORCID: http://orcid.org/0000-0002-8167-1652. E-mail: [email protected] Abstract. Understanding how different environmental factors influence species occurrence is a key issue to address the study of natural populations. However, there is a lack of knowledge on how local traits influence the microhabitat use of tropical arboreal lizards. Here, we investigated the microhabitat selection of the poorly known lizard Tropidurus lagunablanca (Squamata: Tropiduridae) and evaluated how environmental microhabitat features influence animal’s presence.
    [Show full text]
  • Ecological Functions of Neotropical Amphibians and Reptiles: a Review
    Univ. Sci. 2015, Vol. 20 (2): 229-245 doi: 10.11144/Javeriana.SC20-2.efna Freely available on line REVIEW ARTICLE Ecological functions of neotropical amphibians and reptiles: a review Cortés-Gomez AM1, Ruiz-Agudelo CA2 , Valencia-Aguilar A3, Ladle RJ4 Abstract Amphibians and reptiles (herps) are the most abundant and diverse vertebrate taxa in tropical ecosystems. Nevertheless, little is known about their role in maintaining and regulating ecosystem functions and, by extension, their potential value for supporting ecosystem services. Here, we review research on the ecological functions of Neotropical herps, in different sources (the bibliographic databases, book chapters, etc.). A total of 167 Neotropical herpetology studies published over the last four decades (1970 to 2014) were reviewed, providing information on more than 100 species that contribute to at least five categories of ecological functions: i) nutrient cycling; ii) bioturbation; iii) pollination; iv) seed dispersal, and; v) energy flow through ecosystems. We emphasize the need to expand the knowledge about ecological functions in Neotropical ecosystems and the mechanisms behind these, through the study of functional traits and analysis of ecological processes. Many of these functions provide key ecosystem services, such as biological pest control, seed dispersal and water quality. By knowing and understanding the functions that perform the herps in ecosystems, management plans for cultural landscapes, restoration or recovery projects of landscapes that involve aquatic and terrestrial systems, development of comprehensive plans and detailed conservation of species and ecosystems may be structured in a more appropriate way. Besides information gaps identified in this review, this contribution explores these issues in terms of better understanding of key questions in the study of ecosystem services and biodiversity and, also, of how these services are generated.
    [Show full text]
  • Limb and Tail Lengths in Relation to Substrate Usage in Tropidurus Lizards
    JOURNAL OF MORPHOLOGY 248:151–164 (2001) Limb and Tail Lengths in Relation to Substrate Usage in Tropidurus Lizards Tiana Kohlsdorf,1 Theodore Garland Jr.,2 and Carlos A. Navas1* 1Departamento de Fisiologia, IB, Universidade de Sa˜o Paulo, Sa˜o Paulo, SP, Brazil 2Department of Zoology, University of Wisconsin-Madison, Madison, Wisconsin ABSTRACT A close relationship between morphology divergence in relative tail and hind limb length has been and habitat is well documented for anoline lizards. To test rapid since they split from their sister clade. Being re- the generality of this relationship in lizards, snout-vent, stricted to a single subclade, the difference in body pro- tail, and limb lengths of 18 species of Tropidurus (Tropi- portions could logically be interpreted as either an adap- duridae) were measured and comparisons made between tation to the clade’s lifestyle or simply a nonadaptive body proportions and substrate usage. Phylogenetic anal- synapomorphy for this lineage. Nevertheless, previous ysis of covariance by computer simulation suggests that comparative studies of another clade of lizards (Anolis)as the three species inhabiting sandy soils have relatively well as experimental studies of Sceloporus lizards sprint- longer feet than do other species. Phylogenetic ANCOVA ing on rods of different diameters support the adaptive also demonstrates that the three species inhabiting tree interpretation. J. Morphol. 248:151–164, 2001. canopies and locomoting on small branches have short © 2001 Wiley-Liss, Inc. tails and hind limbs.
    [Show full text]
  • = Uracentron) Azureus Werneri (Tropiduridae
    Journal of Herpctology, Vol. 35, No. 3, pp. 395402, 2001 Copyright 2001 Society for the Study of Amphibians and Reptiles Habitat Use and Activity Patterns of the Neotropical Arboreal Lizard Tropidurus ( = Uracentron) azureus werneri (Tropiduridae) NORBERTELLINGER,~ GERHARD SCHLATTE, NICOLE JEROME, AND WALTERHÖDL Drpavtment of Evolutionary Biology, Institute of Zoology, Uniwusity of Vienna, Althanstvasse 14, A-1090 Vienna, Austria ABSTRACT.-We studied habitat use, activity patterns, foraging mode, and prey spectrum of Tropidurus azureus werneri using a tower crane located in an Amazonian lowland rain forest in southern Venezuela. The lizards were strictly arboreal with a preference for the branches and twigs of the canopy. The horizontal distribution of lizards within the 1.4-ha study area was clustered and remained remarkably stable during two consecutive years. The lizards favored high and well-structured crowns with tree holes that served as shelters during the night. Activity was highest at air temperatures above 28°C measured at a height of 21 m. Activity patterns were influenced by cloud Cover and insolation. Tvopidums azureus werneri showed notable agility and tended toward more active foraging patterns than found in other tropidurid lizards. The prey spectrum was dominated by ants. Basic ecological data on reptiles living high in during four years of fieldwork in Ecuador (for the trees of tropical rain forests are sparse, pri- the still disputed synonymization of the tropi- marily because of the difficulties of observing durid genera Plica and Umcentron with Tropidu- reptiles more than a few meters above ground rus, See Frost, 1992; Avila-Pires, 1995; Harvey level and the challenges of conducting studies and Gutberlet, 1998).
    [Show full text]
  • Ecology and Parasitism of the Lizard Tropidurus Jaguaribanus (Squamata: Tropiduridae) from Northeastern Brazil
    Phyllomedusa 17(2):195–210, 2018 © 2018 Universidade de São Paulo - ESALQ ISSN 1519-1397 (print) / ISSN 2316-9079 (online) doi: http://dx.doi.org/10.11606/issn.2316-9079.v17i2p195-210 Ecology and parasitism of the lizard Tropidurus jaguaribanus (Squamata: Tropiduridae) from northeastern Brazil Edna P. Alcantara,1 Cristiana Ferreira-Silva,1 José Guilherme G. Sousa,2 Robson W. Ávila,3 and Drausio H. Morais4 1 Programa de Pós-Graduação em Ciências Biológicas (Zoologia), Universidade Estadual Paulista Julio de Mesquita Filho (UNESP), Campus de Botucatu, Instituto de Biociências, Departamento de Parasitologia. Av. Bento Lopes s/n, Distrito de Rubião Junior, 18080-970, Botucatu, São Paulo, Brazil. E-mail: [email protected]. 2 Programa de Pós-Graduação em Ecologia e Recursos Naturais, Universidade Federal do Ceará (UFC), Campus Universitário do Pici, Departamento de Ciências Biológicas. Av. da Universidade 2853, Benfca, 60021970, Fortaleza, Ceará, Brazil. 3 Universidade Regional do Cariri (URCA), Departamento de Química Biológica, Laboratório de Herpetologia. Rua Cel. Antônio Luiz 1161, 63100-000, Crato, Ceará, Brazil. 4 Universidade Federal Rural da Amazônia (UFRA). Rodovia PA-275, km 13, Zona Rural, 68515-000, Parauapebas, Pará, Brazil. Abstract Ecology and parasitism of the lizard Tropidurus jaguaribanus (Squamata: Tropiduridae) from northeastern Brazil. Specimens of Tropidurus jaguaribanus were collected as part of a study of their use of microhabitats, activity period, body temperature, diet, foraging, sexual dimorphism (in size and in form), reproductive biology, and parasite community composition. The preferential microhabitat of the species is the surface of rocks (saxicolous habit). The species has a bimodal diurnal activity period and a seasonal reproductive cycle.
    [Show full text]
  • Describing Species
    DESCRIBING SPECIES Practical Taxonomic Procedure for Biologists Judith E. Winston COLUMBIA UNIVERSITY PRESS NEW YORK Columbia University Press Publishers Since 1893 New York Chichester, West Sussex Copyright © 1999 Columbia University Press All rights reserved Library of Congress Cataloging-in-Publication Data © Winston, Judith E. Describing species : practical taxonomic procedure for biologists / Judith E. Winston, p. cm. Includes bibliographical references and index. ISBN 0-231-06824-7 (alk. paper)—0-231-06825-5 (pbk.: alk. paper) 1. Biology—Classification. 2. Species. I. Title. QH83.W57 1999 570'.1'2—dc21 99-14019 Casebound editions of Columbia University Press books are printed on permanent and durable acid-free paper. Printed in the United States of America c 10 98765432 p 10 98765432 The Far Side by Gary Larson "I'm one of those species they describe as 'awkward on land." Gary Larson cartoon celebrates species description, an important and still unfinished aspect of taxonomy. THE FAR SIDE © 1988 FARWORKS, INC. Used by permission. All rights reserved. Universal Press Syndicate DESCRIBING SPECIES For my daughter, Eliza, who has grown up (andput up) with this book Contents List of Illustrations xiii List of Tables xvii Preface xix Part One: Introduction 1 CHAPTER 1. INTRODUCTION 3 Describing the Living World 3 Why Is Species Description Necessary? 4 How New Species Are Described 8 Scope and Organization of This Book 12 The Pleasures of Systematics 14 Sources CHAPTER 2. BIOLOGICAL NOMENCLATURE 19 Humans as Taxonomists 19 Biological Nomenclature 21 Folk Taxonomy 23 Binomial Nomenclature 25 Development of Codes of Nomenclature 26 The Current Codes of Nomenclature 50 Future of the Codes 36 Sources 39 Part Two: Recognizing Species 41 CHAPTER 3.
    [Show full text]
  • Calcium Signaling in Lizard Red Blood Cells ☆ ⁎ Piero Bagnaresi A, Miguel T
    Comparative Biochemistry and Physiology, Part A 147 (2007) 779–787 www.elsevier.com/locate/cbpa Review Calcium signaling in lizard red blood cells ☆ ⁎ Piero Bagnaresi a, Miguel T. Rodrigues b, Célia R.S. Garcia a, a Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil b Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil Received 9 May 2006; received in revised form 21 September 2006; accepted 25 September 2006 Available online 3 October 2006 Abstract The ion calcium is a ubiquitous second messenger, present in all eukaryotic cells. It modulates a vast number of cellular events, such as cell division and differentiation, fertilization, cell volume, decodification of external stimuli. To process this variety of information, the cells display a number of calcium pools, which are capable of mobilization for signaling purposes. Here we review the calcium signaling on lizards red blood cells, an interesting model that has been receiving an increasing notice recently. These cells possess a complex machinery to regulate calcium, and display calcium responses to extracellular agonists. Interestingly, the pattern of calcium handling and response are divergent in different lizard families, which enforces the morphological data to their phylogenetic classification, and suggest the radiation of different calcium signaling models in lizards evolution. © 2006 Elsevier Inc. All rights reserved. 2+ Keywords: Ca homeostasis; Red blood cells; Lizards; IP3 receptors; Ryanodine receptors; Purinoceptors; Intracellular messengers Contents 1. Calcium handling mechanisms in lizards' RBCs ........................................... 781 2. Acidic pools ............................................................. 782 3. Participation of mitochondria in calcium homeostasis in lizards, RBCs . ............................ 784 4. Purinoceptors: perceiving extracellular messages .........................................
    [Show full text]
  • TROPIDURUS SPINULOSUS Lizards Were Studied During the Spring-Summer (SQUAMATA: TROPIDURIDAE) Months Between October 1995 and January 1997
    SHORT NOTES 107 SHORT NOTES perature also varies seasonally, but in a less-pro­ nounced cycle than rainfall, which is typical for HERPETOLOGICAL JOURNAL, Vol. 8, pp. 107- 1 10 (1998) temperate-subtropical climates (Bucher, 1980). The NATURAL HISTORY OF type of habitat corresponds to what Cabrera & Willink ( 1980) called the chacoan occidental district. TROPIDURUS SPINULOSUS Lizards were studied during the spring-summer (SQUAMATA: TROPIDURIDAE) months between October 1995 and January 1997. FROM THE DRY CHACO OF SALTA, Trop idurus spinulosus is active mainly during the ARGENTINA warmer months, that is, from September through to March. FELIX B . CRUZ Sampling was performed in two plots of approxi­ mately I ha each, which lay within a total 10 OOO Instituio de Herpetologia, Catedra de Ecologia, hectares of the "Los Colorados" ranch. Lizards were CONICET, Fundaci6n Miguel Lillo, FCN e !ML, Miguel Lillo 251, 4000 Tucaman, Argentina collected by shooting with an air rifle, as the heights at which they were observed made other collection meth­ The genus Tr op idurus is very complex and diverse, ods, such as noosing or ptifall trapping, difficult. After at least 44 recognized species are distributed in tropical killing, specimens were fi xed in 10% formaldehyde and central South America (Rodrigues, 1987; Frost, and then transferred to 75% ethanol. The sampling ar­ 1992; Cei, 1993). Tropidurus sp inulosus is a medium­ eas were therefore very small in relation to the total sized lizard, inhabiting all of north-central Argentina areas available to the lizards, and the trees from which and central Brazil. In Cordoba, Argentina, this lizard is samples were taken were observed to be recolonized by observed on granitic boulders (Martori & Aun, 1994), lizards within a few weeks.
    [Show full text]
  • Nematode Infection Patterns in a Neotropical Lizard Species from an Insular Mountain Habitat in Brazil
    Journal of Helminthology (2017) 91, 578–582 doi:10.1017/S0022149X16000754 © Cambridge University Press 2016 Nematode infection patterns in a Neotropical lizard species from an insular mountain habitat in Brazil A.B.H.P. Václav1,3, L.A. Anjos2, M.S. Queiróz2, L.B. Nascimento3 and C.A.B. Galdino3* 1PET Biologia PUC Minas – MEC/SESu, Pontifícia Universidade Católica de Minas Gerais, 30535-901, Belo Horizonte, Brazil: 2Departamento de Biologia e Zootecnia, Laboratório de Parasitologia e Zoologia, UNESP, Universidade Estadual Paulista, FEIS, Passeio Monção 226, CEP 15385-000, Ilha Solteira, Brazil: 3Programa de Pós-graduação em Biologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, 30535-610, Belo Horizonte, Brazil (Received 12 July 2016; Accepted 27 September 2016; First published online 28 October 2016) Abstract Neotropical lizards are known to harbour rich nematode parasite faunas; how- ever, knowledge of the diversity and patterns of infection are still lacking for many species. This is true for the genus Tropidurus, in which data on patterns of parasitism are known for only approximately 11 of its 30 species. We show that the nematode fauna associated with a population of Tropidurus montanus is composed of three species of host-generalist parasites with high overall preva- lence. Male and female lizards did not differ in infection pattern and there was no relationship between host body size and intensity of infection for the most prevalent parasite species. Nevertheless, overall prevalence changed seasonally, with a higher proportion of parasitized individuals being found in the dry period than in the rainy period. We discuss our findings in the context of diet patterns of T.
    [Show full text]
  • E ISSN 2448-8445 (2019) Volumen 35, 1–4 Elocation-Id: E3502202
    e ISSN 2448-8445 (2019) Volumen 35, 1–4 elocation-id: e3502202 https://doi.org/10.21829/azm.2019.3502202 Nota científica (Short communication) FIRST RECORD OF LEUCISM IN TROPIDURUS HISPIDUS (SPIX, 1825) (SQUAMATA: TROPIDURIDAE) IN NORTH BRAZIL, EASTERN AMAZON PRIMER REGISTRO DEL LEUCISMO EN TROPIDURUS HISPIDUS (SPIX, 1825) (SQUAMATA: TROPIDURIDAE) EN EL NORTE DE BRASIL, AMAZONIA ORIENTAL PATRICK RIBEIRO SANCHES, FILLIPE PEDROSO DOS SANTOS, CARLOS EDUARDO COSTA CAMPOS* Universidade Federal do Amapá, Departamento de Ciências Biológicas e da Saúde, Laboratório de Herpetologia, Campus Marco Zero do Equador, 68.903-419, Macapá, AP, Brazil. <[email protected]>; <[email protected]>; <[email protected]> *Autor de correspondencia: <[email protected]> Recibido: 02/11/2017; aceptado: 06/12/2018; publicado en línea: 01/04/2019 Editor responsable: Gustavo Aguirre León Sanches, P. R., Santos, F. P., Costa-Campos, C. E. (2019). First Record of leucism in Tropidurus hispidus (Spix, 1825) (Squamata: Tropiduridae) in north Brazil, Eastern Amazon. Acta Zoológica Mexicana (nueva serie), 35, 1–4. https://doi.org/10.21829/azm.2019.3502202 ABSTRACT. In vertebrates leucism does not occur frequently in nature but has been recorded in amphibians and reptiles. Herein we report the first record of leucism in Tropidurus hispidus from north Brazil, Eastern Amazon. During fieldwork in an amphibian and reptile assessment, we photographed on a rocky surface and leaf litter an individual T. hispidus with leucism. Key words: Coloration patterns; Lizard; Leucism Sanches, P. R., Santos, F. P., Costa-Campos, C. E. (2019). Primer registro del leucismo en Tropidurus hispidus (Spix, 1825) (Squamata: Tropiduridae) en el norte de Brasil, Amazonia oriental.
    [Show full text]
  • A New Microendemic Species of Tropidurus (Squamata: Tropiduridae) from Southern Brazil and Revalidation of Tropidurus Catalanensis Gudynas & Skuk, 1983
    Zootaxa 3681 (4): 413–439 ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2013 Magnolia Press ISSN 1175-5334 (online edition) http://dx.doi.org/10.11646/zootaxa.3681.4.6 http://zoobank.org/urn:lsid:zoobank.org:pub:FD512749-AB7A-4EC5-9983-BDC648B78FC6 A new microendemic species of Tropidurus (Squamata: Tropiduridae) from southern Brazil and revalidation of Tropidurus catalanensis Gudynas & Skuk, 1983 TOBIAS SARAIVA KUNZ & MÁRCIO BORGES-MARTINS Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Departamento de Zoologia. Laboratório de Herpetologia and Programa de Pós-Graduação em Biologia Animal. Avenida Bento Gonçalves 9500. CEP 91540-000. Porto Alegre, RS, Brazil. E-mail: [email protected], [email protected] Abstract The South American and cis-andean lizard genus Tropidurus has a complex taxonomic history. Most species were recently described and previous revisions included few specimens from the southern part of the continent. Tropidurus torquatus has the broadest geographic distribution in the genus and several morphological and ecological differences were described within its distribution. We analyzed the geographic variation in external morphological characters of Tropidurus torquatus, including large number of samples from southern Brazil. Tropidurus catalanensis is revalidated and Tropidurus imbituba sp. nov., with a restrict distribution in the southern coast of Brazil, is described. The new species is distinguished from Tropidurus catalanensis by the number of dorsal scales. It can be distinguished from T. catalanensis and T. torquatus by a distinct orange ventral coloration in adults, which can reach the lateral portion of the body in adult males. Our analysis also suggests that at least two other undescribed species could be recognized under the name Tropidurus torquatus in southeastern and central Brazil.
    [Show full text]