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| Alves,Maria Lúcia Machado; Leitão-de-Araujo,Moema; Witt,André Alberto. |
| The reproduction of Bothrops jararaca (Wied, 1824) in captivity in ordened to determine the intercourse period, births, number of neonates, proportion of males and females per litter were performed between 1989 and 1999. Fifty eight females were observed, 16 intercourses in captivity, 45 females arrived already fertilized from nature and 53 litters, resulting on the birth of 426 live neonates, 67 infertile egg masses, 18 stillborn neonates and 4 abnormal neonates. The intercourse period was from february to december and the births happened between february and may. From the two gestacional periods observed, the shortest one was 152 days and the longest 239. The average amount of live neonates per litter was 8,04. Among 323 neonates, 47,68% were males and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bothrops jararaca; Reproductive cycle; Neonates; Development; Captivity. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212000000200009 |
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| Balestrin,Rafael Lucchesi; Leitão-de-Araujo,Moema; Alves,Maria Lúcia Machado. |
| In May 1987, a female of Bothrops jararaca (Wied, 1824), from Carazinho, Rio Grande do Sul (RS), Brazil, was placed in the same vivarium with a male of Bothrops neuwiedi Wagler, 1824 coming from Guaíba, RS. There, they stayed for aproximately ten months. In March 1988, it was observed a delivery of five live and two still born, among them six presented morphologic characteristics of B. neuwiedi and one of B. jararaca. After the female died, in April 1988, through necropsy, two fetusus were found, one near the cloaca and, both identified as B. neuwiedi. The morphologic analysis and the origin of the progenitors suggest the hypothesis that the litter was resulted of cross-breeding. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bothrops; Hibridism; Captivity; Rio Grande do Sul; Brazil. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212002000100007 |
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| Matias,Nathalia Rocha; Alves,Maria Lúcia Machado; Araujo,Moema Leitão de; Jung,Diego Marques Henriques. |
| Apesar de machos e fêmeas de serpentes nascerem com o mesmo tamanho, as taxas de crescimento e a idade da maturação sexual podem ser diferentes, determinando dimorfismo sexual em estágios posteriores da vida. Avaliamos a ocorrência de variação morfométrica sexual e ontogenética em Bothropoides jararaca (Wied, 1824), explorando as relações entre tamanho corporal e amadurecimento sexual através de 14 variáveis morfométricas. Foram analisados 142 espécimes provenientes do estado do Rio Grande do Sul, sul do Brasil. Os dados morfométricos - comprimento da cabeça, rostro-cloacal, da cauda, comprimento total; largura da cabeça, ocular, nasal, loreal, da cauda; distância ocular-nasal, ocular-loreal, loreal-nasal, ventral-sinfisal e rostral-labial - e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ontogenia; Morfometria; Dimorfismo. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212011000300001 |
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