Effect of Tephrosia vogelii and Justicia extensa on Tilapia nilotica in vivo

Ibrahim, Bello; M’Batchi, Bertrand; Mounzéo, Hortense; Bourobou, H.P. Bourobou; Posso, P.

doi:10.1016/s0378-8741(99)00036-7

Cited by 22 publications

(17 citation statements)

References 5 publications

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“…This was observed also by Bagalwa and Chifundera (2007), who tested saponin extracts of M. lanceolata on T. nilotica and by Ibrahim et al (2000) for rotenone plants tested on T. nilotica. The experiments also indicate that plant R affected fish more quickly than plant W.…”

Section: Laboratory Testssupporting

confidence: 57%

“…Different active chemical components are usually responsible for the bioactivity of fish toxicants, but their isolation and characterization requires complex chemical analysis (Ibrahim et al 2000). We did not investigate the biochemistry of W and R to protect the community's intellectual property rights.…”

Section: Laboratory Testsmentioning

confidence: 99%

“…There is a widespread interest in including fishing poisons in modern pest management because they are effective on many aquatic pest species, and are usually less expensive (Bagalwa and Chifundera 2007) and perceived as more environmentally friendly than chemical pesticides (Ramanujam and Ratha 1980). Scientific validation has previously been applied to assess the effect of traditional fishing poisons on target pest species (Ramanujam and Ratha 1980, Ibrahim et al 2000, Luitgards-Moura et al 2002, Kalita et al 2007) and nontarget species (Wei et al 2002, Singh and Singh, 2005, Bagalwa and Chifundera 2007 in Africa, India, South America, and China. However, none of these studies evaluated the validation process in terms of communities of learning, equity, and respect.…”

Section: Introductionmentioning

confidence: 99%

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Is Validation of Indigenous Ecological Knowledge a Disrespectful Process? A Case Study of Traditional Fishing Poisons and Invasive Fish Management from the Wet Tropics, Australia

Gratani¹,

Butler²,

Royee³

et al. 2011

E&S

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Despite the growing recognition of the contribution that indigenous ecological knowledge (IEK) can make to contemporary 'western' science-based natural resource management (NRM), integration of the two knowledge systems has not reached its full potential in Australia. One explanation is that there is an implicit requirement for IEK to be validated by western scientific knowledge (SK), which has stalled its application and perpetuated the primacy of SK over IEK. Consequently, there is little experience of IEK validation, indigenous peoples' perspectives of the process, and no formal frameworks to achieve mutual and equitable validation of both IEK and SK. In this paper we assess the opportunities and limitations of validation processes using a case study of traditional fishing poisons for invasive fish management in the Wet Tropics World Heritage Area of Australia. The study was conducted within a coresearch approach between the Aboriginal holders of the IEK, who are among the paper's authors, and science-based biologists. We jointly carried out scientific laboratory trials that demonstrated that fishing poisons are effective at immobilizing invasive tilapia. Retrospective interviews with indigenous coresearchers showed that they did not find the experience of validation disrespectful, but instead empowering and necessary for their IEK to be understood and appreciated by scientists and included in NRM. Based on our experiences and knowledge of socialization theory we present a framework for the potential future design of collaborative validation processes to facilitate the integration of IEK into mainstream NRM, and the acceptance of SK within indigenous communities in Australia

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Section: Laboratory Testssupporting

confidence: 57%

Section: Laboratory Testsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Is Validation of Indigenous Ecological Knowledge a Disrespectful Process? A Case Study of Traditional Fishing Poisons and Invasive Fish Management from the Wet Tropics, Australia

Gratani¹,

Butler²,

Royee³

et al. 2011

E&S

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show abstract

“…Plantas ictiotóxicas contém diferentes princípi-os ativos. Um grupo (Lonchocarpus, Derris, Tephrosia) apresenta rotenona como princípio ativo (Moretti & Grenand 1982, Ibrahim et al 2000. Outro grupo (Thinouia, Serjania) contém saponinas (Moretti & Grenand 1982, Teixeira et al 1984, Schenkel et al 1991.…”

Section: Discus Discus Discus Discus Discussão São São São Sãounclassified

Susceptibilidade de animais de laboratório à intoxicação por Ateleia glazioviana (Leg. Papilionoideae)

et al. 2002

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Coelhos, cobaias, ratos e camundongos foram utilizados com a finalidade de reproduzir a forma cardíaca da intoxicação por Ateleia glazioviana. Quatro animais de cada espécie receberam por 4 meses a planta, secada à sombra, na concentração de 10% na ração, fornecida na forma de pelets. Os pelets foram preparados misturando 700 g de ração comercial, 200 g de amido de milho, 1000 ml de água destilada e 100 g de planta seca e, posteriormente, secados em estufa a 100ºC, durante 16 a 20 horas. Quatro animais de cada espécie serviram como testemunhas, recebendo a ração preparada da mesma forma, porém com a utilização de azevém (Lolium multiflorum) em lugar de A. glazioviana. Era fornecida água à vontade e, para os coelhos e cobaias, também aveia (Avena sativa) verde diariamente. Esses animais não apresentaram nenhuma alteração clínica, e foram pesados semanalmente nas últimas 5 semanas do período experimental, não apresentando diferença significativa no ganho de peso. À necropsia não foram observadas alterações macroscópicas e pelo exame histológico também não foram detectadas lesões significativas no coração e em outros órgãos. Para testar a atividade abortiva de A. glazioviana, ração contendo 10% de planta seca, preparada da mesma forma que no experimento anterior, foi administrada a 11 outros ratos, fêmeas, prenhes, nos dois últimos terços da gestação. Um grupo controle de 11 fêmeas recebeu a ração com azevém a 10%, durante o mesmo período. Esses animais tiveram filhotes normais e no prazo correto. Para determinar a possível perda de toxidez da planta durante a preparação dos pelets, A. glazioviana foi aquecida por 16 a 20 horas a 100ºC e, posteriormente, administrada a um ovino em 26 doses diárias de 2,65 g/kg de planta seca. Durante o período experimental, a ovelha apresentou batimentos cardíacos mais fortes, taquicardia e arritmia cardíacas, depois bradicardia e, no período final, apatia acentuada. Foi sacrificada 7 dias após a última administração da planta. Esse animal apresentava gestação de 2,5 a 3 meses e o feto não apresentava sinais de autólise. As alterações macroscópicas mais evidentes à necropsia foram ascite, hidrotórax, áreas esbranquiçadas no músculo cardíaco e fígado de coloração clara. Na histologia do coração foram observadas degeneração e necrose de fibras cardíacas e proliferação de tecido conjuntivo fibroso. O fígado apresentava congestão e degeneração de hepatócitos nas áreas centrolo-bulares. Os resultados indicam que esses animais de laboratório não foram susceptíveis à ação cardiotóxica de A. glazioviana, por via oral, e sugerem a possibilidade de que o princípio ativo da planta, que é resistente ao calor, seja semelhante ao princípio ativo das plantas do sul da África que causam fibrose cardíaca.

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“…Commonly known as hoary pea (Ibrahim 2000), goat's rue, catgut (Tyrl et al 2008), and devil's shoestring (Swanton 1928), Tephrosia virginiana ( Figure 1) is a member of the Fabaceae, or pea family. A native, perennial herb from woody rootstocks, it is distributed throughout the eastern half of the United States and extends westward to Iowa, and eastern Kansas, Oklahoma, and Texas (USDA-NRCS 2009).…”

Section: Introductionmentioning

confidence: 99%

The Toxicity of Extracts of Tephrosa virginiana (Fabaceae) in Oklahoma

2010

ONPR

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Historical usage of the roots of the legume Tephrosia virginiana as a piscicide by Native Americans has been documented. Due to questions about geographic variation in toxicity, an examination of the toxicity of six Oklahoma populations of the species was conducted. Rootstock extracts of plants in all populations exhibited acute toxicity in a standard laboratory bioassay using larval fathead minnows (Pimephales promelas). Isolation and identification of the compound or compounds responsible were not undertaken, however, toxicity is generally thought to be due to the presence of rotenone and related compounds. Although considerable variation in LC 50 values exists among the six populations, this study produced few statistically significant differences. Correlations between plant toxicity and edaphic factors were not seen.

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Effect of Tephrosia vogelii and Justicia extensa on Tilapia nilotica in vivo

Cited by 22 publications

References 5 publications

Is Validation of Indigenous Ecological Knowledge a Disrespectful Process? A Case Study of Traditional Fishing Poisons and Invasive Fish Management from the Wet Tropics, Australia

Is Validation of Indigenous Ecological Knowledge a Disrespectful Process? A Case Study of Traditional Fishing Poisons and Invasive Fish Management from the Wet Tropics, Australia

Susceptibilidade de animais de laboratório à intoxicação por Ateleia glazioviana (Leg. Papilionoideae)

The Toxicity of Extracts of Tephrosa virginiana (Fabaceae) in Oklahoma

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