SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Davis, A.P.; Govaerts, R..

In order to provide an accepted name for the later homonym P. bremekampiana A.P.Davis & Govaerts we propose a new name in Psychotria: P. andramontaensis A.P.Davis & Govaerts.

A new species of the genus Phaenocarpa Foerster from Madagascar (Hymenoptera: Braconidae: Alysiinae)

Palavras-chave: Psychotrieae; Mapouria; Psychotria; Madagascar.

Ano: 2008

URL: http://www.repository.naturalis.nl/record/524644

Achterberg, C. van.

A new species of the genus Phaenocarpa Foerster (Hymenoptera: Braconidae: Alysiinae) with a short ovipositor, P. vanbruggeni spec. nov., from Madagascar is described and illustrated.

A note on the status of the enigmatic monotypic genus Adelosa (Labiatae)

Palavras-chave: Hymenoptera; Braconidae; Alysiinae; Alysiini; Phaenocarpa; Afrotropical; Madagascar; 42.75.

Ano: 2009

URL: http://www.repository.naturalis.nl/record/311946

Kok, R.P.J. de.

The type specimen of Adelosa microphilla Blume has been examined and the results compared with the morphology of several other genera within the Labiatae. On the basis of this comparison it was concluded that Adelosa microphilla is most likely to be synonymous with a species of Clerodendrum L.

A revision of Madagascan Bertiera (Rubiaceae)

Palavras-chave: Adelosa; Clerodendrum; Madagascar.

Ano: 2001

URL: http://www.repository.naturalis.nl/record/525045

Wittle, P.M.; Davis, A.P..

A taxonomic revision of the Madagascan representatives of the genus Bertiera is presented, to include three species, B. brevithyrsa, B. crinita and B. longithyrsa. A key to their identification is provided, each species is fully described, and summaries of distribution, habitat and ecology, and phenology are given; conservation assessments are also provided. Bertiera brevithyrsa is described as new species; B. crinita represents a new combination, and a lectotype is designated for this name.

Accounting for the Ecological Dimension in Participatory Research and Development: Lessons Learned from Indonesia and Madagascar

Palavras-chave: Bertiera; Bertiereae; Conservation; IUCN Red List Categories; Madagascar; Rubiaceae.

Ano: 2010

URL: http://www.repository.naturalis.nl/record/525748

Ecology and Society

Pfund, Jean-Laurent; International Center for Forestry Research (CIFOR); j.pfund@cgiar.org.

Tipo: Peer-Reviewed Reports

Palavras-chave: Ecological dimension; Indonesia; Madagascar; Management of natural resources; Multiple stakeholders; Participatory research and development; Tropical forest landscapes.

Ano: 2008

Alternative to Disincentive Rice Producer Prices in Madagascar: Case Study in Alaotra Prefecture and Bongolava Prefecture

AgEcon

Ralandison, Tsilavo; Shiratake, Yoshiharu.

This study identifies the reasons for low producer prices of rice that have not covered its production costs for many years in Madagascar. The following points will be discussed: the farmers’ marketing conditions and the rural rice market structure, including the functions of each intervening trader preceding rice distribution in urban centers. The study also assesses current functions of the agricultural farmer cooperative: an organization expected to enable the establishment of fair trade in the domestic rice market. The data come from interviews conducted with 120 farmers, 20 traders, and the survey of the overall cooperative associations in two prefectures and main rice suppliers of the capital city. The analysis reveals that farmers were often...

Tipo: Conference Paper or Presentation

Palavras-chave: Cooperatives; Madagascar; Markets; Rice; Agricultural and Food Policy; Consumer/Household Economics; Environmental Economics and Policy; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Institutional and Behavioral Economics; International Relations/Trade; Marketing; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods.

Ano: 2008

URL: http://purl.umn.edu/52005

Biologie et pêche traditionnelle des crevettes pénéides dans l'embouchure d'un fleuve en milieur semi-aride (sud-ouest de Madagascar)

Collocherides bleptus n. sp. (Copepoda: Siphonostomatoida) associated with an intertidal ophiuroid in Madagascar

Laroche, Jean; Benoely,; Siaviri, A.

Traditional fishing using beach seines was studied over a period of one year at the mouth of the Onilahy river. The catches/efforts were recorded on a daily basis, biological sampling and the measurement of hydrological parameters being carried out twice a month. The moderate variations of salinity and temperature (14 < salinity < 35; 25 degrees C < temperature < 30 degrees C) which were observed in the estuary can be explained by the semiarid climate of the area. Four species of penaeid shrimps are to be found on the Onilahy: Metapenaeus monoceros, Panaeus indicus, Penaeus monodon and Penaeus japonicus, which were mainly caught at the subadult/adult stage with a Carapace length between 10 and 50 mm. The presence of these important sizes at the...

Tipo: Text

Palavras-chave: Pêche; Estuaire; Dynamique population; Croissance; Taille corporelle; Cycle évolutif; Zone semi aride; Madagascar; Penaeus japonicus; Penaeus monodon; Penaeus indicus; Metapenaeus monoceros; Rivière Onilahy; Afrique; Milieu saumâtre; Macrura; Decapoda; Crustacea; Arthropoda; Invertebrata; Fishing; Estuaries; Population dynamics; Growth; Body size; Life history; Semi arid zone; Malagasy Republic; Penaeus japonicus; Penaeus monodon; Penaeus indicus; Africa; Brackish water environment; Macrura; Decapoda; Crustacea; Arthropoda; Invertebrata.

Ano: 1995

URL: http://archimer.ifremer.fr/doc/00097/20828/42822.pdf

Humes, Arthur G..

Collocherides bleptus n. sp. is associated with a brittle star, Macrophiothrix sp., at Nosy Bé, in northwestern Madagascar. The new copepod differs from its two congeners by its larger size and by having leg 5 in the female with an elongate distal segment bearing only two setae.

Comparative tadpole morphology in three species of frogs of the genus Spinomantis (Amphibia: Mantellidae)

Palavras-chave: Copepoda; Siphonostomatoida; Madagascar; Ophiuroid; Associate; Collocherides.

Ano: 1993

URL: http://www.repository.naturalis.nl/record/504649

Vejarano, S.; Thomas, M.; Vences, M..

We describe the tadpoles of three species of Malagasy frogs, classified in the genus Spinomantis, based on specimens identified by DNA barcoding. The tadpole of Spinomantis aglavei is a typical Orton type IV larva. The oral disc is not emarginated laterally, but has two mid-ventral folds and a labial tooth row formula of 3(2- 3)/2(1). The tadpole of S. phantasticus is similar, the oral disc being laterally emarginated and having one medial fold; LTRF is 3/3(1). A third species, S. cf. fimbriatus is also similar to the other two species; the oral disc is not laterally emarginated but has three medial folds and LTRF is 3(2-3)/3(1). One shared character is a median fold or emargination in the lower part of the oral disc, although the shape of this fold is...

Composition and antimicrobial activity of essential oils of Cinnamosma fragrans

Palavras-chave: Anura; Spinomantis aglavei; Spinomantis phantasticus; Spinomantis fi mbriatus; Madagascar; Systematics; DNA barcoding; 42.82.

Ano: 2006

URL: http://www.repository.naturalis.nl/record/210775

Randrianarivelo, Roger; Sarter, Sarnira; Odoux, Eric; Brat, Pierre; Lebrun, Marc; Romestand, Bernard; Menut, Chantal; Andrianoelisoa, Hanitriniaina Sahondra; Raherimandimby, Marson; Danthu, Pascal.

Essential oil samples of Cinnamosma fragrans from two regions in Madagascar, Tsaramandroso (38 samples) and Mariarano (30 samples), were analysed by GC/MS. Fifty-seven components were identified, accounting from 88.3% to 99.4% of the oils' composition. The major components were linalool (72.5 +/- 23.3%) in Tsaramandroso and 1,8-cineole (47.3 +/- 10.2%) in Mariarano. Samples B8 (95.8% linalool) from Tsaramandroso and B143 (71.6% 1,8-cineole) from Mariarano containing the highest proportions of the two main components identified, were selected to determine antimicrobial activities against 10 microbial strains. Bacillus subtilis and Staphylococcus aureus were the most sensitive strains to both oils. Minimum inhibitory concentration (MIC) values were lower for...

Tipo: Text

Palavras-chave: Madagascar; 1.8 Cineole; Linalool; Antimicrobial activity; Essential oil; Cinnamosma fragrans.

Ano: 2009

URL: http://archimer.ifremer.fr/doc/2009/publication-6242.pdf

Crustal seismic structure and anisotropy of Madagascar and south-eastern Africa using receiver function harmonics: interplay of inherited local heterogeneities and current regional stress

Densification of the Ground-Based GNSS Observation Network in the Southwest Indian Ocean: Current Status, Perspectives, and Examples of Applications in Meteorology and Geodesy

Tsang-hin-sun, Eve; Evain, Mikael; Julia, J; Lamarque, G; Schnurle, Philippe.

This study investigates the seismic structure and anisotropy in the crust beneath Madagascar and south-eastern Africa, using receiver functions. The understanding of seismic anisotropy is essential for imaging past and present deformation in the lithosphere-asthenosphere system. In the upper mantle, seismic anisotropy mainly results from the orientation of olivine, which deforms under tectonic (fossil anisotropy) or flow processes (in the asthenosphere). In the crust, the crystallographic alignment of amphiboles, feldspars(plagioclase) or micas or the alignment of heterogeneities such as fractures, add to a complex geometry, which results in challenges to understanding the Earth's shallow structure. The decomposition of receiver functions into back-azimuth...

Tipo: Text

Palavras-chave: Crustal seismic anisotropy; Inherited structural heterogeneities; Crustal stress; Receiver function harmonics; Madagascar; Africa; EARS.

Ano: 2021

URL: https://archimer.ifremer.fr/doc/00686/79843/82668.pdf

Description of 11 new Astiella (Spermacoceae, Rubiaceae) species endemic to Madagascar

Bousquet, Olivier; Lees, Edouard; Durand, Jonathan; Peltier, Aline; Duret, Anne; Mekies, Dominique; Boissier, Patrice; Donal, Thomas; Fleischer-dogley, Frauke; Zakariasy, Lova.

In the frame of the research project IOGA4MET, a new ground-based GNSS network is being deployed in the Southwest Indian Ocean (SWIO) since November 2017. This new network opens up for new research opportunities in geodesics and atmospheric sciences in this area regularly exposed to natural hazards, and significantly expands the International GNSS System (IGS) network, which only includes eight stations so far in the SWIO. After a description of the current status of IOGA4MET, several examples of regional applications in meteorology (climatology and numerical modeling) and geodesy (monitoring of ground deformations) are presented using data collected in northern Madagascar and small neighboring islands in 2018–2020. The observed water vapor cycle is shown...

Tipo: Text

Palavras-chave: Southwest Indian Ocean; GNSS - Global Navigation Satellite System; Water vapor cycle; Madagascar; Mayotte; Geodesy; NWP (numerical weather prediction); AROME Indian Ocean.

Ano: 2020

URL: https://archimer.ifremer.fr/doc/00651/76324/77302.pdf

Groeninckx, I.; Janssens, S.; Smets, E.; Verstraete, B..

Astiella is an herbaceous genus endemic to Madagascar, originally described with a single species A. delicatula Jovet. Molecular and morphological evidence place it in the tribe Spermacoceae s. lat. of Rubiaceae. During herbarium studies and fieldwork in Madagascar, 11 new Astiella species were identified and these are described here: A. antongilensis Groeninckx sp. nov., A. antsalovansis Groeninckx sp. nov., A. confusa Groeninckx sp. nov., A. deblockiae Groeninckx sp. nov., A. desseinii Groeninckx sp. nov., A. homolleae Groeninckx sp. nov., A. latifolia Groeninckx sp. nov., A. longifimbria Groeninckx sp. nov., A. perrieri Groeninckx sp. nov., A. pulla Groeninckx sp. nov., and A. tsaratanensis Groeninckx sp. nov. The genus Astiella now holds 12 species in...

Determinants of Repayment Performance in Credit Groups: The Role of Program Design, Intra-group Risk Pooling, and Social Cohesion in Madagascar

Palavras-chave: Astiella; Endemism; Madagascar; Rubiaceae; Spermacoceae s. lat..

Ano: 2017

URL: http://www.repository.naturalis.nl/record/629097

AgEcon

Zeller, Manfred.

Group lending has received much attention in recent years because of its perceived potential in providing financial services to poor households that lack traditional collateral. The analysis in this paper focuses on the effects of program design, community and group characteristics on the repayment performance of groups, using a data set on groups from six different lending programs in Madagascar. The results show that socially cohesive groups pool risks by diversifying the members’ asset portfolio so that their repayment performance is improved even in communities with high-risk exposure.

Tipo: Working or Discussion Paper

Palavras-chave: Community Participation; Madagascar; Credit; Financial Economics.

Ano: 1996

URL: http://purl.umn.edu/97299

Development of the shrimp industry in the Western Indian Ocean - a holistic approach of vertical integration, from domestication and biosecurity to product certification

Le Groumellec, Marc; Rigolet, Vincent; Panchayuthapani, Duraisamy; Vandeputte, Marc; Rao, Vemulapalli Manavendra.

The shrimp farming industry in the western Indian Ocean started with Aqualma’s project in 1989, and now several companies farm shrimp in the Mozambique Channel. Despite the remoteness of these projects and their high investment and operating costs, they compete in the global marketplace by efficiently producing high value quality products. To address sustainability and biosecurity issues, Aqualma developed domesticated specific pathogenfree (SPF) broodstock of Penaeus monodon from western Indian Ocean stocks, which have been its exclusive source of post-larvae since 2003. Specific molecular diagnostic tools have been developed for each endemic pathogen detected since 1996, and these are used for routine surveillance of Aqualma’s shrimp stocks along with...

Tipo: Text

Palavras-chave: Shrimp; Madagascar; Domestication; Biosecurity; Certification.

Ano: 2011

URL: http://archimer.ifremer.fr/doc/00099/20980/18604.pdf

Diversity, external morphology and ‘reverse taxonomy’ in the specialized tadpoles of Malagasy river bank frogs of the subgenus Ochthomantis (genus Mantidactylus)

Randrianiaina, R.-D.; Strauß, A.; Glos, J.; Glaw, F.; Vences, M..

We provide detailed morphological descriptions of the tadpoles of Malagasy river bank frogs of the subgenera Ochthomantis and Maitsomantis (genus Mantidactylus, family Mantellidae), and data on relative abundance and habitat preferences of Ochthomantis species from Ranomafana National Park in southeastern Madagascar. Our study includes the tadpoles of six described and four undescribed candidate species. Eight of these larvae were previously unknown. Tadpoles were identified by DNA barcoding. Due to the very rudimentary taxonomic knowledge on Ochthomantis, we followed a ‘reverse taxonomy’ approach in which adult classification was to a great part determined on the basis of larval differences. By this procedure we even identified one candidate species whose...

Envenomation by the madagascan colubrid snake, Ithycyphus miniatus

Palavras-chave: Amphibia; Mantellidae; Madagascar; Tadpole morphology; DNA barcoding; 42.82.

Ano: 2011

URL: http://www.repository.naturalis.nl/record/369710

J. Venom. Anim. Toxins incl. Trop. Dis.

Mori,A.; Mizuta,T..

We report two cases of envenomation by a Madagascan opisthoglyphous snake, Ithycyphus miniatus. In both cases, the snake bit the finger of a human who was preparing an experiment by tying a string around the snake body. Symptoms of the first case included temporal severe local pain and extensive bleeding. In the second case, severe pain accompanying obvious local swelling was caused and lasted for several hours. The present observations indicate that bite by I. miniatus potentially causes serious physiological effects in humans although the snake is basically calm and reluctant to bite.

Tipo: Info:eu-repo/semantics/report

Palavras-chave: Madagascar; Colubrid; Ithycyphus miniatus; Envenomation; Opisthoglyph; Duvernoy's glands.

Ano: 2006

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992006000300013

Envenomation by the Malagasy colubrid snake Langaha madagascariensis

J. Venom. Anim. Toxins incl. Trop. Dis.

D'Cruze,NC.

This report documents a case of envenomation by a Malagasy opisthoglyphous snake, Langaha madagascariensis. The snake bit the finger of a healthy adult man who was attempting to record its morphological measurements as part of a biodiversity survey which was being conducted in the extreme north of Madagascar. Symptoms of this case included severe local pain accompanied by observable swelling which lasted for several days. The present observations indicate that bite by L. madagascariensis potentially causes notable physiological effects in humans although the snake is generally calm and reluctant to bite unless provoked.

Tipo: Info:eu-repo/semantics/article

Palavras-chave: Madagascar; Colubrid; Langaha madagascariensis; Envenomation; Opisthoglyph; Duvernoy's glands.

Ano: 2008

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992008000300014

Estimating fishing effort in small-scale fisheries using GPS tracking data and random forests