Frugivoria e dispersão de sementes pelo lagarto teiú Tupinambis merianae (Reptilia: Teiidae)

Castro, Everaldo Rodrigo de; Galetti, Mauro

doi:10.1590/s0031-10492004000600001

Cited by 52 publications

(36 citation statements)

References 31 publications

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“…Species of Solanaceae with fl eshy fruit, especially from the genus Solanum, are mainly dispersed by bats (Iudica & Bonacorso 1997;Galindo-González 1998;Passos et al 2003). Few cases were related for non-fl ying mammals (Alexandre 1982;Facure & Giaretta 1996;Bueno & Motta-Junior 2004), birds (Pijl 1972;Symon 1979;Murray et al 1994;Avila et al 1996;Nogales et al 1999), and reptiles (Rick & Bowman 1961;Nogales et al 1998;Castro & Galleti 2004). Solanum thomasiifolium is a pioneer shrub, with aculeate leaves, branches and stalk.…”

Section: Introductionmentioning

confidence: 99%

Seed dispersal of Solanum thomasiifolium Sendtner (Solanaceae) in the Linhares Forest, Espírito Santo state, Brazil

Vasconcellos‐Neto

Albuquerque²,

Silva

2009

Acta Bot. Bras.

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RESUMO -(Dispersão de sementes de Solanum thomasiifolium Sendtner (Solanaceae) na Floresta de Linhares, Espírito Santo, Brasil). O propósito deste estudo foi analisar a dispersão de sementes e o estabelecimento de Solanum thomasiifolium em uma área de vegetação de "nativo" no Estado do Espírito Santo, na costa do sudeste do Brasil. Dez espécies de aves, o cachorro-do-mato (Cerdocyon thous) e uma espécie de lagarto (Tropidurus torquatus) alimentaram-se de frutos de S. thomasiifolium e dispersaram sementes viáveis em suas fezes. A contribuição proporcional de cada um destes grupos na dispersão de sementes foi de 77% para aves, 19% para o cachorro-do-mato e 4% para o lagarto. Formigas também contribuíram com a dispersão de sementes. Mais sementes foram depositadas nas ilhas de vegetação do que nas áreas abertas vizinhas. As taxas de germinação de sementes oriundas de frutos (controle), fezes de aves, fezes do cachorro do mato e do lagarto foram, respectivamente, 64 %, 64 %, 53% e 80%. As diferenças entre estas taxas foram todas signifi cativas, exceto entre o controle e fezes de aves. Lagartos foram importantes como transportadores de sementes entre ilhas de vegetação próximas e defecaram uma grande proporção de sementes viáveis. As aves e o cachorro-do-mato não aumentaram a germinação de sementes, mas promoveram a dispersão sobre uma área maior. A arquitetura da planta, a produtividade de frutos, as características do fruto e a diversidade de frugívoros são importante no sucesso de S. thomasiifolium para colonização do habitat. Palavras-chave: aves, cachorro-do-mato, deposição de sementes, frugivoria, germinação, lagarto ABSTRACT -(Seed dispersal of Solanum thomasiifolium Sendtner (Solanaceae) in the Linhares Forest, Espírito Santo state, Brazil). The aim of this study was to analyse seed dispersal and establishment of Solanum thomasiifolium in an area of "nativo" vegetation in Espirito Santo state on the southeastern Brazilian coast. Ten species of birds, the crab-eating fox (Cerdocyon thous), and one species of lizard (Tropidurus torquatus) fed on S. thomasiifolium fruits and dispersed viable seeds in their faeces. The proportional contribution of each of these groups to seed dispersal was 77% (birds), 19% (crab-eating fox) and 4% (lizards). Ants also contributed to seed dispersal. More seeds were deposited in vegetation islands than in the surrounding open areas. Germination rates of seeds collected directly from fruit (control), bird droppings, the faeces of crab-eating foxes and lizards were, respectively, 64, 64, 53, and 80 %. Differences among these rates were all signifi cant, except between birds and control. Lizards were important as seed carriers between nearby islands and they expelled a higher proportion of viable seeds. Birds and the crab-eating foxes did not enhance seed germination, but promoted seed dispersal over a wider area. Plant architecture, fruit productivity, fruit characteristics and the diversity of frugivores are important for the success of S. thomasiifolium in habitat colonization.

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Section: Introductionmentioning

confidence: 99%

Seed dispersal of Solanum thomasiifolium Sendtner (Solanaceae) in the Linhares Forest, Espírito Santo state, Brazil

Vasconcellos‐Neto

Albuquerque²,

Silva

2009

Acta Bot. Bras.

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“…Moreover, they can reach high densities; up to 125 animals/km 2 for C. carbonarius and C. denticulatus combined (Moskovits, 1988), and go up to 54 kg in the largest species, C. denticulatus (Pritchard and Trebbau, 1984). The two large and widely distributed lizard genera in the Neotropics, tegu, and iguana lizards (Tupinambis and Iguana), also disperse seeds (Benítez-Malvido et al, 2003;de Castro and Galetti, 2004), and occur at high densities, reaching 83 and 122 individuals/km 2 for tegus and iguanas, respectively (Munoz et al, 2003;Bovendorp et al, 2008).…”

Section: Reptiles As Gene Transportersmentioning

confidence: 99%

The Plight of Reptiles as Ecological Actors in the Tropics

Miranda

Everton²

2017

Front. Ecol. Evol.

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Earth's tropical ecosystems have witnessed several extinctions and a dramatic reduction of the range and abundance of large reptile species, which is directly related to the rise of early and modern humans. The occurrence of such extinctions, range reduction, species loss, and the consequences for several paramount ecosystem processes are poorly documented compared to other large vertebrate species. Here, I reviewed the literature on the ecological processes performed by large tropical reptile species and their human-induced widespread demise in order to determine knowledge gaps and encourage a paradigm shift in understanding on the interactiveness of such species. The interactions and species involved indicate that large abundant reptiles in the tropics are important in ecological processes, and can consequently have an important role in ecosystem function through gene dispersal, nutrient cycling, trophic action, and ecosystem engineering. These important interactions performed by reptiles are not solely performed by few species, or geographically restricted to islands, but instead present a pattern that repeatedly occurs in large reptiles distributed over tropical ecosystems. The observed tendency of reptiles to be tightly involved in these ecological interactions has important implications for the ecology of tropical ecosystems. Lost and current ecological processes performed by large reptiles may be orders of magnitude higher than what is currently perceived, and the misleading baseline of those processes must be addressed otherwise we risk losing species and services that are dependent of such interactions. To fix this bias I suggest: (a) Increase information spreading about Pleistocene-Holocene reptile extinctions using popular media; (b) Improved exchange between the research field of megafauna effects in ecosystems and herpetologists working with large reptiles; (c) Increase research effort on anthropogenic reptile extinctions and their potential to predict future losses; (d) Address the knowledge gaps, as human-reptile conflict, chelonian seed dispersal and nutrient movement; (e) Increase quantitative research on large reptile population ecology, density, and abundance. (f) address the potentially present or lost ecosystem effects of extant and extinct reptile species. Although the importance of reptiles in most tropical ecosystems has been perceived as negligible, this study shows that this may be a misleading paradigm.

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“…Segundo Zamprogno e Teixeira (1998), H. mabouia alimenta-se de forma generalizada de artrópodos, tendo um papel de controle destes organismos nas habitações. Já T. merianae, alimenta-se de artrópodos, pequenos vertebrados e frutos (COLLI; PERES JúNIOR; CUNHA, 1998) podendo também ser um bom dispersor de sementes (CASTRO; GALETTI, 2004). A espécie H. mabouia, conhecida por lagartixa de parede, foi possivelmente introduzida no Brasil por ação humana, transportada por navios com escravos africanos ou com imigrantes europeus (GOELDI, 1902 Dentre as serpentes do campus, quatro podem provocar envenenamento.…”

Section: Herpetofauna (31 Espécies 15 De Lissamphibia E 16 De Reptilia)unclassified

A fauna de vertebrados do campus da Universidade Estadual de Londrina, região norte do estado do Paraná, Brasil

Shibatta

Galves

Carmo

et al. 2009

Semin. Cienc. Biol. Saude

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ResumoEste trabalho teve como objetivo fazer um levantamento da fauna de vertebrados do campus da Universidade Estadual de Londrina (UEL), pela compilação da literatura, com vistas a auxiliar o seu manejo e preservação. Foram registradas 250 espécies, sendo nove de peixes, 15 de anfíbios, 16 de répteis, 32 de mamíferos e 178 de aves. Duas espécies, o gato-do-mato Leopardus tigrinus e a jandaia-de-testa-vermelha Aratinga auricapillus figuram em listas de fauna ameaçada de extinção. A maioria das espécies, no entanto, não é estenóica ou endêmica da área, o que condiz com um ambiente perturbado e muito freqüentado pela população humana. O assoreamento do ribeirão Esperança, a redução de áreas verdes e a impermeabilização do solo podem reduzir a diversidade de espécies em médio a longo prazos. Palavras-chave: Actinopterygii. Aves. Biodiversidade. Lissamphibia. Mammalia. Reptilia. AbstractThis work had the objective to make a survey of vertebrates' fauna from Universidade Estadual de Londrina (UEL) campus, for the compilation of literature, in order to help its management and preservation. 250 species were identified, being nine of fish, 15 of amphibians, 16 of reptiles, 32 of mammals and 178 of birds. Two species, the gato-do-mato Leopardus tigrinus and the jandaia-da-testavermelha Aratinga auricapillus, are in the list of species threatened by extinction. Most species, however, are not stenoecious or endemic to the area, which corresponds to an environment under stress and often visited by humans. Despite UEL's rich diversity of wild animals, the burying of stream Esperança, the reduction of green areas and waterproofing of the ground can reduce de diversity of species in a medium or long term.

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Frugivoria e dispersão de sementes pelo lagarto teiú Tupinambis merianae (Reptilia: Teiidae)

Cited by 52 publications

References 31 publications

Seed dispersal of Solanum thomasiifolium Sendtner (Solanaceae) in the Linhares Forest, Espírito Santo state, Brazil

Seed dispersal of Solanum thomasiifolium Sendtner (Solanaceae) in the Linhares Forest, Espírito Santo state, Brazil

The Plight of Reptiles as Ecological Actors in the Tropics

A fauna de vertebrados do campus da Universidade Estadual de Londrina, região norte do estado do Paraná, Brasil

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