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A case of infanticide in tufted capuchin monkeys (Cebus nigritus) Mastozool. neotrop.
Izar,Patrícia; Ramos-da-Silva,Eduardo D.; de-Resende,Briseida D.; Ottoni,Eduardo B..
According to behavioural ecology, infanticide by males would be an adaptive reproductive strategy because it allows faster fertilization of the females and reduces investment in unrelated offspring. Critics of this view indicate the lack of evidence of the behaviour for several primate species, hence the relevance of reports of observed infanticide events. Here we report a case of infant killing in a free-ranging group of tufted capuchin monkeys (Cebus nigritus).
Tipo: Info:eu-repo/semantics/report Palavras-chave: Infanticide; Male reproductive behaviour; Social structure.
Ano: 2007 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832007000100009
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Behavioral counter-strategies against infanticide in corn mouse females, Calomys musculinus Mastozool. neotrop.
Coda,José A.; Priotto,José W.; Steinmann,Andrea R..
Based on the hypothesis that in C. musculinus both female territorial behavior and promiscuity are counter-strategies against infanticide by females and males respectively, our objective was to test the following predictions: (1) mother aggression deters infanticide by females; (2) previous matings prevent infanticide by males. We conducted 116 behavioral encounters between mothers and intruders to study the nest related behaviors. Mother-pups units (Mu) were grouped in three treatments in relation to the intruder feature: 55 Mu were placed with siring males, 27 Mu and 34 Mu were housed with non-siring males and reproductively active females, respectively. We also calculated offspring survival rate for each treatment. The nest related behaviors varied...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rodent; Infanticide; Behavioral strategies; Counter-strategies; Mother aggression.
Ano: 2011 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832011000200003
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Environmental and dam effects on cannibalism in Wistar rat litters Biological Sciences
Tarôco, Graziela; Gaya, Leila de Genova; Resende, Daniela Regina; Santos, Ivan Carlos dos; Madureira, Ana Paula.
The factors related to cannibalistic behavior of dams in a Wistar rat colony are identified and analyzed. The maternal genetic effects were tested as a random effect by the method of generalized linear models. The season at parturition, the dam´s age at parturition and the density of the room at parturition were tested as fixed effects, whereas the litter size at birth was tested as a co-variable. The genetic effect of the dam was significant for the number of cannibalized pups. Although the season at parturition, the dam´s age and room density on the day of parturition were not individually significant (p > 0.05), most of the interactions between the variation sources were significant (p < 0.05). Cannibalism occurred mostly in dams aged over 241...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Laboratory animals; Maternal behavior; Infanticide; Rodents laboratory animals; Maternal behavior; Infanticide; Rodents.
Ano: 2015 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/23015
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Paternity testing and behavioral ecology: a case study of jaguars (Panthera onca) in Emas National Park, Central Brazil. Repositório Alice
SOARES, T. N.; TELLES, M. P. C.; RESENDE, L. V.; SILVEIRA, L.; JÁCOMO, A. T. A.; MORATO, R. G.; DINIZ-FILHO, J. A. F.; EIZIRIK, E.; BRONDANI, R. P. V.; BRONDANI, C..
We used microsatellite loci to test the paternity of two male jaguars involved in an infanticide event recorded during a long-term monitoring program of this species. Seven microsatellite primers originally developed for domestic cats and previously selected for Panthera oncawere used. In order to deal with uncertainty in the mother?s genotypes for some of the loci, 10000 values of Wwere derived by simulation procedures. The male that killed the two cubs was assigned as the true sire. Although the reasons for this behavior remain obscure, it shows, in principle, a low recognition of paternity and kinship in the species. Since the two cubs were not very young, one possibility is that the adult male did not recognize the cubs and killed them for simple...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Ecological stress; Infanticide; Jaguar; Microsatellites; Paternity.
Ano: 2006 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/214576
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Young didelphid consumption by Micoureus paraguayanus (Didelphimorphia: Didelphidae) in southeastern Brazil Mastozool. neotrop.
Pires,Mathias M.; Martins,Eduardo G.; Cruz,Leonardo D.; Fernandes,Fernanda R.; Carvalho,Rute B. G. Clemente-; Silva,Maria Nazareth F.; Reis,Sérgio F. dos.
In a study aiming to describe the diet of Micoureus paraguayanus in a southeastern Brazilian Cerrado (savannah-like) remnant, we found young didelphid remains in fecal samples from live-trapped adults. These findings uncovered either events of scavenging on dead young didelphids or infanticide adding to the knowledge on the dietary breadth and behavioral ecology of M. paraguayanus.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cannibalism; Cerrado; Didelphid; Infanticide.
Ano: 2010 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832010000100023
Registros recuperados: 5
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