Testing capturing methods for the Yellow-legged Tinamou Crypturellus noctivagus (Wied, 1820) (Aves, Tinamidae) in southern Brazil

Corrêa, Luiz Liberato Costa; Petry, Maria Virgı́nia

doi:10.11606/1807-0205/2018.58.07

Cited by 7 publications

(24 citation statements)

References 8 publications

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“…We collected morphometric data in a relictual population of C. n. noctivagus, which inhabits a 450 ha forest remnant completely isolated from other forest patches (30°05'35.3" S, 53°36'22.9" W) ( Figure 1). The forest remnant is located between the municipalities of São Sepé and Formigueiro in the state of Rio Grande do Sul (Corrêa et al 2010, Corrêa & Petry 2018, Corrêa & Petry 2019. The region is within the Pampa Biome, and is covered by Seasonal Deciduous Forest (IBGE 2004).…”

Section: Study Region and Populationmentioning

confidence: 99%

“…At the national level, the Yellow-legged Tinamou is considered vulnerable to extinction (ICMBIo 2016). In the state of Rio Grande do Sul, since only a small population is known (Côrrea et al 2010, Corrêa & Petry 2018, the species is considered Critically Endangered (FBZ 2014). Luiz C. C. Corrêa (unpublished data) estimated the population at 18 adult individuals.…”

Section: Study Region and Populationmentioning

confidence: 99%

“…Between October and December of 2015 and 2016, we captured C. n. noctivagus using bell-traps. Three bell-traps were adapted using a nylon cast net (detailed description in Corrêa & Petry 2018). From each captured bird we measured Bill height (BH), Bill length (BiL) (exposed culmen), Head length (HL), Tarsus length (TaL) and Middle toe length (MTL) to the nearest mm using a digital caliper; with an aluminum ruler we measured Tail length (TL), Left wing length (WL) and Body length (BL).…”

Section: Sampling and Morphometric Measurementsmentioning

confidence: 99%

“…The Yellow-legged Tinamou Crypturellus noctivagus (Wied, 1820) is a forest bird endemic to the Atlantic Forest in Brazil. Two subspecies are recognized for this taxon: Crypturellus noctivagus zabele (Spix, 1825), found in the northeast region of Brazil; and Crypturellus noctivagus noctivagus (Wied, 1820), which inhabits remnant lowland forests in southern Brazil (Sick 1997, Piacentini et al 2015, Birdlife International 2016, reaching the state of Rio Grande do Sul (Corrêa et al 2010, Corrêa & Petry 2018, Corrêa & Petry 2019. Due to consistent differences in diagnostic characters among subspecies, such as tarsus color and breast plumage of females and non-overlapping distribution, Tomotani & Silveira (2016) suggested that they should be recognized as distinct species.…”

Section: Introductionmentioning

confidence: 99%

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MORPHOMETRY AND SEXUAL DIMORPHISM IN THE YELLOW-LEGGED TINAMOU Crypturellus noctivagus noctivagus IN A RELICTUAL POPULATION FROM SOUTHERN BRAZIL

et al. 2020

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The Yellow-legged Tinamou (Crypturellus noctivagus) is a terrestrial forest bird endemic to Brazil. Females and males of the subspecies Crypturellus noctivagus noctivagus are indistinguishable at the naked eye and there is lack of knowledge regarding means to discriminate sexes in the field. We investigated morphometric differences between sexes of C. n. noctivagus to determine which measures should be used to distinguish sexes. We compared eight morphometric measurements and total body mass of adult birds from a relictual population living in the wild, in the state of Rio Grande do Sul. Birds were captured during the breeding seasons of 2015 and 2016. Sex identification of individuals (four females and seven males) was obtained by molecular analysis. Differences between sexes were tested through Student's t and Mann-Whitney's tests and a through Principal Component Analysis. On average, females were 9.9% heavier and had bills 11.8% longer than males. Males had middle toes 8.7% larger and tails 19.0% larger than females, the latter presenting the highest degree of dimorphism among all measurements. Our results show that, when molecular sexing is not feasible, morphometric variables may be used to determine the sex of C. n. noctivagus individuals.

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Section: Study Region and Populationmentioning

confidence: 99%

Section: Study Region and Populationmentioning

confidence: 99%

Section: Sampling and Morphometric Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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MORPHOMETRY AND SEXUAL DIMORPHISM IN THE YELLOW-LEGGED TINAMOU Crypturellus noctivagus noctivagus IN A RELICTUAL POPULATION FROM SOUTHERN BRAZIL

et al. 2020

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“…Between 2015 and 2016, we conducted field work in order to collect ecological information of C. n. noctivagus in the study area. In November 2016, when individuals were captured using a bell-trap (Corrêa & Petry 2018) and manipulated by researchers in order to collect biological samples, one specimen (adult female) came to death. The specimen was frozen and brought to the Laboratório de Ornitologia e Animais Marinhos at the Universidade do Vale do Rio dos Sinos, Rio Grande do Sul state, Brazil.…”

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confidence: 99%

STOMACH CONTENT ANALYSIS OF Crypturellus noctivagus noctivagus (TINAMIFORMES, TINAMIDAE) IN SOUTHERN BRAZIL

Corrêa

Petry

2019

Oecol. Aust.

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Studies reporting specific aspects of forest tinamous' feeding ecology are still scarce in the scientific literature, and most of the available information report only casual observations. The Crypturellus noctivagus noctivagus (Tinamiformes, Tinamidae) is a forest bird endemic to Brazil, which occurs from southern Bahia to Rio Grande do Sul. In this study, we analyzed food items found in the stomach content of one C. n. noctivagus individual in the state of Rio Grande do Sul, Brazil. We found seeds of Nectandra megapotamica (Laurales, Lauraceae) and Myrcianthes gigantea (Myrtales, Myrtaceae), totalizing 2.259 g. We also found insect fragments of the orders Coleoptera and Lepidoptera, one individual of the family Curculionidae (Coleoptera), and one larval specimen of Dirphia muscosa (Lepdoptera), totalizing 0.637 g of stomach content, and rock fragments weight 1.741 g. This study provides records of the C. n. noctivagus species feeding habits, contributing to the knowledge about the trophic ecology of Tinamiformes in South Brazil.

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Bell-trap effectiveness to capture Crypturellus obsoletus and Crypturellus tataupa (Aves: Tinamidae) in southern Brazil

Corrêa

Silva

Müller

et al. 2023

Acta Sci. Biol. Sci.

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Specific techniques for the efficient capture of forest tinamous in a short sampling time are yet poorly described in the literature. Here, we report the efficiency of the bell-trap in the capture of Brown Tinamou (Crypturellus obsoletus) and Tataupa Tinamou (Crypturellus tataupa), in southern Brazil. We used three bell-traps adapted with casting nets. In 80 hours of sampling effort, four adult individuals of C. obsoletus were captured, in a forest area in the Pampa Biome. This study area is located in the municipality of São Sepé, state of Rio Grande do Sul, Brazil. Subsequently, in 16 hours of sampling effort in a forest area of the Atlantic Forest domain, one individual of C. obsoletus and one of C. tataupa were captured. This other study area is located in the municipality of Passo do Sobrado, RS. The bell-trap method has already been reported as efficient in capturing Yellow-legged Tinamous (Crypturellus noctivagus), in southern Brazil. However, since forest tinamous are cryptical birds, field adaptations are often necessary to achieve success in sampling activities. The use of this method proved efficient in the capture of forest tinamous, generating an important tool for the collection of bioecological data of this group of birds, which still represents a lack of studies.

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Testing capturing methods for the Yellow-legged Tinamou Crypturellus noctivagus (Wied, 1820) (Aves, Tinamidae) in southern Brazil

Cited by 7 publications

References 8 publications

MORPHOMETRY AND SEXUAL DIMORPHISM IN THE YELLOW-LEGGED TINAMOU Crypturellus noctivagus noctivagus IN A RELICTUAL POPULATION FROM SOUTHERN BRAZIL

MORPHOMETRY AND SEXUAL DIMORPHISM IN THE YELLOW-LEGGED TINAMOU Crypturellus noctivagus noctivagus IN A RELICTUAL POPULATION FROM SOUTHERN BRAZIL

STOMACH CONTENT ANALYSIS OF Crypturellus noctivagus noctivagus (TINAMIFORMES, TINAMIDAE) IN SOUTHERN BRAZIL

Bell-trap effectiveness to capture Crypturellus obsoletus and Crypturellus tataupa (Aves: Tinamidae) in southern Brazil

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