Journal articles on the topic 'Toamasina (Madagascar)'

The Madagascar fauna of the beetle family Hydraenidae is comprehensively revised, based on the study and databasing of 6,949 specimens. New collection records are provided for 11 previously described species, and 95 new species are described. Three new subgenera of Hydraena, viz. H. (Micromadraena), H. (Monomadraena), and H. (Dnahydnaedna) are described, and several new species groups of Hydraena are diagnosed. Two new genera in the tribe Madagastrini are described: Menomadraena and Trinomadraena. The Malagasy hydraenid fauna now comprises 106 species arrayed in the following nine genera: Aulacochthebius (2), Hydraena (65), Limnebius (10), Madagaster (8), Menomadraena (6), Ochthebius (1), Protozantaena (5), Sicilicula (8), and Trinomadraena (1). Lectotypes are designated for the following species: Aulacochthebius plicicollis (Fairmaire), 1898 (Ochthebius); Hydraena dilutipes Fairmaire, 1898; Hydraena impressicollis Fairmaire, 1898; Hydraena marginicollis Regimbart, 1903 (= Hydraena regimbarti Zaitzev 1908; nomen novum); and Ochthebius alluaudi Regimbart, 1903. Hydraena discicollis Fairmaire, 1898, is considered a nomen dubium: no type specimens were found, and the description appears to be that of a species of Aulacochthebius or Ochthebius, not Hydraena. High resolution digital images of lectotypes and holotypes of new species are presented (online versions in color). Male genitalia, representative antennae, maxillary palpi, and female terminal abdominal segments and spermathecae are illustrated. Geographic distributions of all species are mapped. Possible colonization and vicariance events are discussed at the tribal, generic and species group levels. The tribe Madagastrini, found only in Madagascar and southern India, is hygropetric, indicating that this microhabitat type has been continuously present in both Madagascar and India at least since the two separated, currently estimated to be 88 million years ago. Contrastingly, some lowland lentic species of other genera appear to be closely related to species in southern Africa, suggesting rather recent colonization events. New species of Aulacochthebius: A. perlaevis (Mahajanga, Boeny: Mahavavy Kinkony RS). New species of Hydraena (Micromadraena): H. breviceps (Fianarantsoa, 29 km SSW Ambositra, Ankazomivady); H. fortipes (Antsiranana, Forêt d' Antsahabe); H. genuvela (Antsiranana, Forêt de Binara); H. parvipalpis (Antananarivo, Réserve Spéciale d'Ambohitantely); H. rubridentata ((Mahajanga, Parc National de Namoroka); H. serripennis (Antsiranana, Forêt d' Antsahabe). New species of Hydraena (Monomadraena): H. acicula (Antsiranana, Antsaba, Galoko Mountains); H. ambohitantely (Antananarivo, Ambohitantely Spec. Res.); H. amplexa (Fianarantsoa, Andringitra NP); H. amplipunctata (Fianarantsoa, 7 km W Ranomafana); H. antsahabe (Antsiranana, Forêt d' Antsahabe); H. bergsteni (Antsiranana, Diana: Beraty); H. bisinuata (Toamasina, Tamatave 6.3 km S Ambanizona); H. bisinuloba (Toliara, Menabe: Kirindy RS.); H. bispica (Toamasina, Alaotra Mangoro: Analamazoatra SR); H. casacolumna (Fianarantsoa, Andringitra NP); H. compacta (Antananarivo, Ankaratra, Reserve Manjakatompo); H. contracolorata (Antsiranana, Montagne des Francais); H. epipleurata (Antsiranana, Forêt de Binara); H. furcula (Toliara, 40km N of Fort Dauphin, Managotry); H. gereckei (Antananarivo, Ankaratra, Reserve Manjakatompo); H. goldschmidti (Antananarivo, Anjozorobe, Ravoandrina); H. inseriata (Antananarivo, Anjozorobe, Ravoandrina); H. jubata (Antsiranana, Sava Marojejy NP); H. levifurcata (Fianarantsoa, Namarona River, 7 km SW Ranomafana); H. lubrica (Antananarivo, Ambohitantely Spec. Res.); H. mahavavona (Fianarantsoa, Ionilahy, Mahavavona); H. manjakatompo (Antananarivo, Ankaratra, Reserve Manjakatompo); H. marojejy (Antsiranana, Parc National de Marojejy); H. multiarcuata (Fianarantsoa, Ranomafana); H. oscillata (Toamasina, Alaotra Mangoro Andasibe-Mantadia NP); H. parvispinosa (Toamasina, Andasibe NP); H. pentarubra (Antsiranana, Montagne d'Ambre); H. quatriloba (Toliara, Andohahela NP, Tsimelahy); H. ranomafana (Fianarantsoa, Ranomafana); H. ravoandrina (Antananarivo, Anjozorobe, Ravoandrina); H. rubrifurcata (Antsiranana, Sava, Marojejy NP); H. sculponea (Antsiranana, Befingotra (9.2 km WSW), Res. Anjanaharibe-Sud); H. simplicata (Antsiranana, Montagne d'Ambre); H. tibiodentipes (Fianarantsoa, Andringitra NP); H. triaequalis (Fianarantsoa, Ranohira); H. tripartita (Fianarantsoa, Ranomena); H. upsilonica (Toamasina, Zahamena NP); New species of Hydraena (Hydraenopsis): H. andranomena (Toliara, Andranomena); H. arta (Antsiranana, Parc National de Marojejy); H. bucollis (Toamasina, Tamatave, Andranobe Field Station); H. clavulata (Fianarantsoa, Ranomafana); H. contorta (Antananarivo, Anjozorobe forest reserve); H. dilutipoides (Mahajanga, Parc National Tsingy de Bemaraha); H. divisa (Antsiranana, Antsaba,Galoko Mountains); H. elementaria (Antananarivo, Tamatave, Coastal lagoon); H. fulgidicollis (Antananarivo, Parc de Tsimbazaza); H. longiloba (Fianarantsoa, Madiorano); H. nanula (Antsiranana, Ankarana, Ampositelo); H. orchisa (Toamasina, Alaotra Mangoro Andasibe-Mantadia NP); H. pilobova (Antsiranana, Sava, Marojejy NP); H. pilotumida (Fianarantsoa, 7 km W Ranomafana); H. ranarilalatiani (Toamasina, Alaotra Mangoro: Analamazoatra SR); H. randriamihajai (Antsiranana, Diana: Montagne d'Ambre NP); H. renalisa (Antsiranana, Sambava: Marojejy NP); H. sinuatipes (Antsiranana, Ankarana); H. torquata (Fianarantsoa, Andringitra NP). New species of Limnebius: L. angulatus (Fianarantsoa, Namarona River, 7 km W Ranomafana); L. balkei (Antsiranana, Montagne d'Ambre); L. bergsteni (Fianarantsoa, Namarona River, 7 km W Ranomafana); L. clandestinus (Mahajanga, Boeny:Mahavavy Kinkony RSc); L. labratus (Toamasina, Maroantsetra); L. lacrimosus (Toamasina, 18.7911S 48.4259E Alaotra Mangoro Andasibe-Mantadia NP); L. lobatus (Toliara, Manakaravavy); L. maximadus (Toamasina, Alaotra Mangoro: Analamazoatra SR); L. nanostillus (Antsiranana, Ankarana); L. steineri (Fianarantsoa, 7 km W Ranomafana). New species of Madagaster: M. barbata (Fianarantsoa, Andringitra NP); M. bergsteni (Antananarivo, 18.8704S 47.6708E Analamanga); M. cataracta (Antsiranana, Sava, Marojejy NP); M. procarina (Fianarantsoa, 32 km S Ambositra); M. quadricurvipes (Fianarantsoa, Andringitra NP); M. simplissima (Fianarantsoa, 32 km S Ambositra). New species of Menomadraena: M. andringitra (Fianarantsoa, Res. Andringitra); M. concava (Fianarantsoa, R.S. Ivohibe); M. fisheri (Toliara, Enakara (11 km NW), Res. Andohahela); M. ivohibe (Fianarantsoa, R.S. Ivohibe); M. nitedula (Fianarantsoa, Res. Andringitra); M. sembella (Fianarantsoa, Amparihibe). New species of Protozantaena: P. duplicata (Antananarivo, Vakinankaratra: Manjakatompo Stn. Forestière); P. elongata (Antananarivo, Vakinankaratra: Manjakatompo Stn. Forestière). New species of Sicilicula: S. ampla (Antananarivo, Onive River near Ilempona); S. bergsteni (Fianarantsoa, 21.2263S 47.3694E, Matsiara Ambony, Ranomafana NP); S. conjugalis (Fianarantsoa, Namarona River, 7 km SW Ranomafana); S. cordicollis (Fianarantsoa, Namarona River, 7 km SW Ranomafana); S. hygropetrica (Fianarantsoa, Matsiara Ambony, Ranomafana NP); S. malagasica (Fianarantsoa, Abohimahasoa); S. sexplanata (Antsiranana, Mt. Tsaratanana). New species of Trinomadraena: T. clusa (Antsiranana, Mt. d’Ambre).

Introduction. The child’s skin diseases are common and very diverse. Many studies concerning pediatric dermatoses have been carried out in Africa and the rest of the world. Few epidemioclinical data reflect these skin diseases in children, especially in the east coast of Madagascar. We aim to describe the pattern skin diseases among children seen at the University Hospital Center Morafeno, Toamasina, Madagascar. Patients and Methods. A retrospective study over a 3-year period from January 2017 to December 2019 was conducted in children seen in the Dermatology Department of University Hospital Center Morafeno, Toamasina, with skin diseases. Results. During the study period, 347 children out of the 1584 new patients were retained with a sex ratio of 0.86. The mean age was 6.4 years old. The main diseases identified were skin infectious diseases (43, 23%), allergic dermatoses (24.21%), and autonomous dermatosis (15.56%). Conclusion. Our study revealed the importance of infectious and allergic dermatoses in Toamasina. It is necessary to carry out simple preventive actions such as hygiene.

Type material of moth flies of Neoarisemus leponti sp. nov. was collected in Madagascar, Toamasina province, environments of Analamazaotra and Amboditafonana. Hemimormia nyangerensis sp. nov. and Iranotelmatoscopus kenyensis sp. nov. were captured in Equatorial Africa near Victoria Lake during a fieldwork in Uganda (Gaba) and Kenya (Kusa, Nyangera). The mentioned three species are described, differential diagnoses included, and diagnostic characters illustrated.

Two new oribatid mite species, Hymenobelba exclamationis and Pteramerus clypeatus spp. nov. (Ameridae), are described and illustrated based on specimens collected from mossy montane rainforest in the Malagasy Republic, Toamasina Province, Maromizaha forest. Both of them show a great variation of peculiar morphological features as having or not the costuliform prodorsal structure, the number and position of the notogastral setae and the abundance or position of aggenital and adanal neotrichy in genus Hymenobelba. A well observable variation can be observed in the form of pedotecta and in legs segments of the other species (Pteramerus clypeatus), which is only the second species belonging to this genus.

Acute appendicitis was often diagnosed at the complication stage during the Covid19 pandemic at CHU Analankininina Toamasina. Our objective was to discuss the particularity of the management of appendicitis during the pandemic. Our study was prospective, descriptive for 6 months and took place in the general surgery department of the Analankininina Toamasina University Hospital Center, Madagascar from March 2020 to August 2020. We had collected 28 patients. The sex ratio was 3.66. The average age was 27.57 years. Appendicular abscess represented 64.29% (n=18) of the appendicular patients operated in emergency. Appendicular plastron occupied 14.29% (n=2) and generalized acute peritonitis was 7.14% (n=2). Post-operative follow-up was simple in 71.43% (n=20). The average length of hospitalization was 4 days. Acute appendicitis is often complicated during the Covid 19 pandemic in our hospital center. Surgery was systematic in our hospital, contrary to some literature which advocated antibiotic therapy at an early stage in front of the health emergency.

Two new monotypic genera of the family Sparassidae are described from Madagascar: Martensikara gen. nov. with M. jocheni spec. nov. (female; from Toliara Province), belonging to Heteropodinae Thorell, 1873, and Deelemanikara gen. nov. with D. christae spec. nov. (female; from Toamasina and Antananarivo Provinces) of uncertain systematic affiliation. Both genera show unique combinations of characters that do not occur in any of the known genera. Somatic as well as genital characters of both genera are discussed and compared with those of other taxa of Sparassidae.

The objective of this study was to identify the key determinants of condom use with regular and casual partners among youth in Madagascar. Data stem from a reproductive health survey conducted in October–December 2000 among a representative sample of 2440 youth aged 15–24 living in Toamasina province. Following theoretical models of behaviour change, logistic regression was used to assess the effect of AIDS awareness, personal risk perception, condom access, perceived condom effectiveness, self-efficacy and social support on condom use. Among sexually experienced youth, only about four in ten males and two in ten females have ever used condoms. Fewer than 15% of youth used a condom in last intercourse with their regular partner. Whether youth will try condoms appears to depend largely on the perceived effectiveness of condoms for family planning, access to a nearby condom source, parental support for condom use, and patterns of risky sexual behaviour. Young males’ likelihood of using a condom with a regular partner increases significantly if they perceive condoms to be effective for family planning (OR=11·4; p=0·019). For females, it increases with level of self-efficacy (OR=2·1; p=0·042) and having discussed HIV prevention with someone in the last year (OR=2·8; p=0·022). Among males, condom use with casual partners is significantly higher among those who perceive themselves to be at high risk of sexually transmitted infections (OR=2·3; p=0·014), who believe condoms are effective for family planning (OR=2·8; p=0·048), who have good access to condoms (OR=2·9; p=0·002) and who perceive their parents support condom use (OR=1·7; p=0·048). In conclusion, very few youth in Toamasina are using condoms, highlighting the need to continue and expand adolescent reproductive health interventions. In this low HIV prevalence setting, it is important for these programmes to emphasize that condoms are effective for both pregnancy prevention and STI/HIV prevention.

The effects of the 26 December 2004 Indian Ocean tsunami on the island of Madagascar were surveyed in July and August of 2005. Runup and inundation were obtained at 52 sites, covering most of the eastern coast of the country, ranging from a maximum runup of 5.4 m in the south to locations where the tsunami was not observed by eyewitnesses present on the day of the event. The data set is characterized by significant heterogeneity, suggesting the importance of local factors in controlling runup. The report of a 50-m vessel breaking its moorings in the port of Toamasina several hours after the maximum visible activity of the wave underscores the complexity of harbor responses and the need to re-evaluate civil defense policies in port environments. Important factors are how the Malagasy population responded to the warning issued during the Nias earthquake, on 28 March 2005, and the hazard posed to Madagascar by possible future mega-earthquakes in south Sumatra.

During the period of total containment during the Covid-19 pandemic; our department became the sole treatment center for all surgical emergencies. The influx of many patients made the task very difficult for the surgeon. This is a 3-month descriptive prospective study in the visceral surgery department at the Analankininina Toamasina University Hospital Center. Of the 81 patients hospitalized during the study, 32 patients were admitted for digestive surgery emergency, i.e. 39.50%. The mean age was 34.87 years with a sex ratio of 1.66, predominantly male. Abdominal pain occupied 43.75% of the reason for consultation, the most frequent pathologies were acute intestinal obstruction (18.75%) and acute appendicitis (18.75%). An exploratory laparotomy is performed on 40.62% of patients. Many patients were operated on for proctologic emergency (18.75%). The average length of hospitalization is 4.18 days. The visceral emergencies are present despite the presence of the Covid-19 pandemic and the activities of the health personnel are uninterrupted.

Myxophagan water beetles from Madagascar are comprehensively revised. Holotypes of the two previously known species are re-described and illustrated. Six new species of Incoltorrida Steffan and one new species of Hydroscapha LeConte are described and illustrated. The larvae of Incoltorrida quintacostata are illustrated and discussed. The presence of peritrich ciliates of the genus Platycola Kent on specimens of Incoltorrida madagassica Steffan is discussed and illustrated. Habitus, habitats, and male genitalia are illustrated, and distributions are mapped. The following new species are described (type localities parenthetic): Incoltorrida benesculpta n. sp. (Fianarantsoa, 3.2km S Ambohimanjaka); I. galoko n. sp. (Antsiranana, Diana, Ambilobe, Antsaba, Galoko mountains ); I. magna n. sp. (Antsiranana, Diana, Ambilobe, Antsaba, Galoko mountains); I. marojejy n. sp. (Antsiranana, Sava, Marojejy National Park); I. quintacostata n. sp. (Fianarantsoa, 3.5km N Ivato); I. zahamena n. sp. (Toamasina, Alaotra-Mangoro, Zahamena National Park); Hydroscapha andringitra n. sp. (Fianarantsoa, Ambilavao, Sendrisoa, approx. 10km N of Andringitra National Park).

<em>Madachironomus</em> gen. n. is described based on male and female imagines collected at two watersheds in Madagascar. Two species are included, <em>M. lakazana</em> sp. n. from Lakazana River, Antananarivo province and <em>M. rongaronga</em> sp. n. from Rongaronga River, Toamasina province. The adults have a black comb on the apex of the fore tibia, similar to the combs on mid- and hind tibiae, thus placing the new genus in the tribe Pseudochironomini Sæther. The male has a strong, moderately long, nearly parallel-sided anal point with broadly rounded apex, without microtrichia except at base, and a digitiform, apically split median volsella with strong brush-like setae, projecting medially. The female sternite VIII has a very dense posteromedial to posterolateral field of setae, the gonocoxapodeme VIII is nearly straight, the gonapophysis VIII has closely adjacent, indistinctly separable lobes; the ovoid seminal capsules have nearly straight spermathecal ducts and the labia have internal apodemes and spinose chaetulae on dorsomedial surfaces.

Biological invasions are on the rise, with each invader carrying a plethora of associated microbes. These microbes play important, yet poorly understood, ecological roles that can include assisting the hosts in colonization and adaptation processes or as possible pathogens. Understanding how these communities differ in an invasion scenario may help to understand the host’s resilience and adaptability. The Asian common toad, Duttaphrynus melanostictus is an invasive amphibian, which has recently established in Madagascar and is expected to pose numerous threats to the native ecosystems. We characterized the skin and gut bacterial communities of D. melanostictus in Toamasina (Eastern Madagascar), and compared them to those of a co-occurring native frog species, Ptychadena mascareniensis, at three sites where the toad arrived in different years. Microbial composition did not vary among sites, showing that D. melanostictus keeps a stable community across its expansion but significant differences were observed between these two amphibians. Moreover, D. melanostictus had richer and more diverse communities and also harboured a high percentage of total unique taxa (skin: 80%; gut: 52%). These differences may reflect the combination of multiple host-associated factors including microhabitat selection, skin features and dietary preferences.

Post-traumatic hemothorax is common in young adults in the context of road accidents. Explorations of the lesions may be limited by the technical platform. The objective of our study is to discuss the difficulty of managing post-traumatic hemothorax in a limited-medium structure. This was a 20-month retrospective study (01 May 2018-31 December 2019), involving 38 patients treated for post-traumatic hemothorax, whether or not associated with pneumothorax, in the general surgery department of the CHU Analankinina Toamasina. The hospital frequency was 1.66%, with a mean age of the patients of 31.89 years, and a male predominance (73.68%). The main provider of hemothorax was the civil liability accident (52.63%). Chest X-rays were performed in almost all patients (94.74%). Complications had been found in 4 patients with secondary surgery, with favorable outcomes. The frequency of hemothorax is constantly increasing in Madagascar, where the civil liability accident is the main cause. Chest X-ray remains the most accessible examination to be carried out in emergency. An early and efficient thoracic drainage generally ensures a favorable evolution without after-effects.

Description of 18 new Coniopteryx species is given from Madagascar, and a further one (Coniopteryx (X.) botswana Meinander, 1998) is reported as new to the fauna of this country. The new species are: Coniopteryx (C.) ambalihana sp. n., Coniopteryx (C.) auricularia sp. n., Coniopteryx (C.) bidentatus sp. n., Coniopteryx (C.) corniculata sp. n., Coniopteryx (C.) crenata sp. n., Coniopteryx (C.) fianarantsoana sp. n., Coniopteryx (C.) geniculata sp. n., Coniopteryx (C.) harinhalai sp. n., Coniopteryx (C.) ihorombeana sp. n., Coniopteryx (C.) microcauda sp. n., Coniopteryx (C.) pseudoceylonica sp. n., Coniopteryx (C.) pseudomalagasensis sp. n., Coniopteryx (C.) ranomafanana sp. n., Coniopteryx (C.) schizostylaris sp. n., Coniopteryx (C.) spinicauda sp. n., Coniopteryx (C.) toamasinana sp. n., Coniopteryx (X.) antankarana sp. n., Coniopteryx (X.) tuleariensis sp. n. . Besides, revalidation of Coniopteryx (X.) sestertia Meinander, 1998, and necessary emendation of Coniopteryx malgasensis Sziráki, 2015 is given also. Majority of the new species belongs to the Coniopteryx lobifrons group; distributional pattern of this species group is discussed.