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Reproductive phenology of the American Bullfrog in subtropical Brazil: photoperiod as a main determinant of seasonal activity Anais da ABC (AABC)
MEDEIROS,CAMILA I.; BOTH,CAMILA; KAEFER,IGOR L.; CECHIN,SONIA Z..
ABSTRACT The North American bullfrog Lithobates catesbeianus continues to invade ecosystems worldwide, potentially causing population declines and even extinctions. Within its native distribution, bullfrogs show prolonged reproductive seasons and high fertility. However, data on breeding biology of bullfrogs ex-situ in invaded localities mainly comes from anecdotal reports. Understanding how invasive species are adjusting their life histories to new colonized environments is important for conservation purposes. Here we describe temporal and spatial abundance, calling activity, spawning and tadpole distribution of bullfrogs in southern Brazil. Eighteen samplings occurred during one year. The abundance of individuals was positively related to longer...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Breeding; Invasive species; Lithobates catesbeianus; Microhabitat; Recruitment; Spatial distribution.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000501909
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The peculiar breeding biology of the Amazonian frog Allobates subfolionidificans (Aromobatidae) Anais da ABC (AABC)
SOUZA,JESUS R.D.; KAEFER,IGOR L.; LIMA,ALBERTINA P..
ABSTRACT Allobates subfolionidificans is a vulnerable and endemic leaf-litter frog from the state of Acre, Brazilian Amazonia. We monitored a population of A. subfolionidificans through regular censuses and mark-recapture of 181 individuals during an entire breeding season to characterize its reproductive behavior. The space use of A. subfolionidificans individuals differed between sexes, with males using smaller and more segregated spaces. Males defended territories and were aggressive against same-sex individuals, which was not the case in females. The daily cycle of calling activity showed peaks in the morning and in the afternoon, and the occurrence of reproductive events was positively correlated with monthly rainfall. The breeding behavior comprised...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anura; Dendrobatidae; Ethology; Leaf-litter frog; Space use.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000300885
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Composition and ecology of a snake assemblage in an upland forest from Central Amazonia Anais da ABC (AABC)
MASSELI,GABRIEL S.; BRUCE,ALLAN D.; SANTOS,JUCIMARA G. DOS; VINCEN,TIMOTHY.; KAEFER,IGOR L..
Abstract: Most species of Amazonian snakes have wide geographic distributions. However, local environmental factors influence the formation of assemblages in different localities. In this study, we investigated the composition of the assemblage and the effect of environmental variables on the distribution of the species inhabiting an upland forest in the Experimental Farm area of the Federal University of Amazonas in Manaus, Brazil. Data collection was carried out in 24 standardized plots. Each plot was sampled four times between July 2015 and April 2017 by active search method. We recorded 83 individuals from 29 species belonging to six families. The richness in the study area corresponded to 78% of the snake species and 100% of the families previously...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Community ecology; Manaus; RAPELD; Serpentes; Squamata.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000200603
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