Results 11 to 20 of about 754 (140)

Ovarian follicular cycle of Tropidurus hispidus and Tropidurus semitaeniatus (Squamata: Tropiduridae) in a semiarid region of Brazil [PDF]

open access: yesZoologia (Curitiba), 2015
The reproductive cycle of Squamata reptiles is often associated with environmental conditions, such as rainfall. In this respect, seasonal variations may affect the morphology of the ovarian follicles, which are associated with vitellogenesis.
Hellen S. Santos   +5 more
doaj   +4 more sources

The effects of seasonality on the foraging behavior of Tropidurus hispidus and Tropidurus semitaeniatus (Squamata: Tropiduridae) living in sympatry in the Caatinga of northeastern Brazil [PDF]

open access: yesZoologia (Curitiba), 2009
In this study, we performed field observations of 38 and 84 specimens of the lizards Tropidurus hispidus (Spix, 1825) and Tropidurus semitaeniatus (Spix, 1825), respectively, inhabiting a Caatinga in the state of Rio Grande do Norte, northeastern Brazil,
Miguel F. Kolodiuk   +2 more
doaj   +6 more sources

Anti-predator behaviour changes following an aggressive encounter in the lizard Tropidurus hispidus [PDF]

open access: yesProc Biol Sci, 1999
Avoiding predators may conflict with territorial defence because a hiding territorial resident is unable to monitor its territory or defend it from conspecific intrusions. With persistent intruders, the presence of an intruder in the near past can indicate an increased probability of future intrusions.
Diaz-Uriarte R.
europepmc   +6 more sources

ECOLOGÍA TÉRMICA Y PATRÓN DE ACTIVIDAD DEL LAGARTO Tropidurus hispidus (SAURIA: TROPIDURIDAE) EN EL ORIENTE DE VENEZUELA [PDF]

open access: yesActa Biológica Colombiana, 2010
Se estudiaron aspectos de ecología térmica y patrón de actividad del lagarto Tropidurus hispidus en ejemplares colectados en un bosque tropófilo del estado Sucre, Venezuela; entre junio 2007 y mayo 2008. La temperatura media corporal fue de 35,68±1,4ºC y
Jenniffer Velasquez
doaj   +8 more sources

Gene flow patterns reinforce the ecological plasticity of Tropidurus hispidus (Squamata: Tropiduridae)

open access: yesCaryologia, 2020
The analysis of gene flow patterns can provide important insights into population dynamics in the context of landscape ecology. In lizards, this approach has been used to evaluate patterns related to climate change, habitat fragmentation, and taxonomic ...
Fernanda Ito   +3 more
doaj   +2 more sources

Cytogenetic study in the Brazilian semiarid lizard Tropidurus hispidus (Squamata, Tropiduridae) [PDF]

open access: yes, 2023
Different classes of repetitive DNA sequences are found in eukaryotes, often composing substantial portions of the genome, associated with their important role in the structural and functional genome organization.
Correa Oliveira, Edivaldo Herculano   +6 more
core   +3 more sources

Tropidurus hispidus Spix 1825 (Sauria, Tropiduridae): a new host for Oswaldofilaria petersi Bain & Sulahian 1974 (Nematoda, Onchocercidae) Tropidurus hispidus Spix 1825 (Sauria, Tropiduridae): novo hospedeiro para Oswaldofilaria petersi Bain & Sulahian 1974 (Nematoda, Onchocercidae)

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2003
No presente trabalho descreve-se a ocorrência de Oswaldofilaria petersi Bain & Sulahian 1974 (Nematoda, Onchocercidae) em Tropidurus hispidus Spix 1825 (Sauria, Tropiduridae). Um macho e uma fêmea de O.
R.J. Silva, T. Kohlsdorf
doaj   +7 more sources

Trophic ecology and foraging behavior of Tropidurus hispidus and Tropidurus semitaeniatus (Squamata, Tropiduridae) in a caatinga area of northeastern Brazil [PDF]

open access: yesIheringia. Série Zoologia, 2011
This study aimed to analyze the seasonal variation in diet composition and foraging behavior of Tropidurus hispidus (Spix, 1825) and T. semitaeniatus (Spix, 1825), as well as measurement of the foraging intensity (number of moves, time spent stationary, distance traveled and number of attacks on prey items) in a caatinga patch on the state of Rio ...
Ribeiro, Leonardo B.   +1 more
openaire   +6 more sources

Reproductive and fat body cycles of Tropidurus hispidus and Tropidurus semitaeniatus (Squamata, Tropiduridae) in a caatinga area of northeastern Brazil Ciclos reproductivos y de grasa corporal de Tropidurus hispidus y Tropidurus semitaeniatus (Squamata, Tropiduridae) en una área de caatinga del nordeste de Brasil [PDF]

open access: yesRevista Chilena de Historia Natural, 2012
This study assessed the reproductive and fat body cycles of Tropidurus hispidus (Spix, 1825) and T. semitaeniatus (Spix, 1825) in an area of caatinga in the Serido of Rio Grande do Norte, Brazil, from October 2006 to May 2008.
LEONARDO B. RIBEIRO   +2 more
doaj   +3 more sources

First Record of leucism in Tropidurus hispidus (Spix, 1825) (Squamata: Tropiduridae) in north Brazil, Eastern Amazon [PDF]

open access: yesACTA ZOOLÓGICA MEXICANA (N.S.), 2019
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.
Costa-Campos, Carlos Eduardo   +2 more
core   +4 more sources

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