Four new Tapinomorphus species are described and illustrated: Tapinomorphus angolanus sp. nov. from Angola, T. kudrnai sp. nov. from Zambia, T. latipennis sp. nov. and T. verunkae sp. nov. from Zimbabwe. This brings the total number of species in the genus to 20. Habitus images and illustrations of important characters are provided.
The former Pb-Zn mining town of Kabwe in central Zambia is ranked amongst the worst polluted areas both in Africa and in the world. The fine dust particles from the ISF and Waelz slags deposited in Kabwe represent a health risk for the local population. Here, we combined a detailed multi-method mineralogical investigation with oral bioaccessibility testing in simulated gastric fluid (SGF; 0.4 M glycine, pH 1.5, L/S ratio of 100, 1 h, 37 °C) to evaluate the risk related to the incidental dust ingestion. The slag dust fractions contain up to 2610 mg/kg V, 6.3 wt% Pb and 19 wt% Zn. The metals are mainly bound in a slag glass and secondary phases, which formed during the slag weathering or were windblown from nearby tailing stockpiles (carbonates, Fe and Mn oxides, phosphates, vanadates). The bioaccessible fractions (BAFs) are rather high for all the main contaminants, with the BAF values generally higher for the ISF slags than for the Waelz slags: Pb (24-96%), V (21-100%) and Zn (54-81%). The results clearly indicate the potential risks related to the incidental slag dust ingestion. Even when a conservative value of the dust daily intake (100 mg/day) is considered, the daily contaminant intake significantly exceeds the tolerable daily intake limits, especially for Pb ≫ V > Zn. At higher ingestion rates, other minor contaminants (As, Cd) also become a health risk, especially for children. The slag heaps in Kabwe should be fenced to prevent local people entering and should be covered to limit the dust dispersion.
- MeSH
- dítě MeSH
- hornictví MeSH
- kovy analýza MeSH
- látky znečišťující životní prostředí MeSH
- lidé MeSH
- monitorování životního prostředí MeSH
- prach analýza MeSH
- průmyslový odpad * MeSH
- velkoměsta MeSH
- vystavení vlivu životního prostředí * MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- velkoměsta MeSH
- Zambie MeSH
The new species Haptomerus maculosus Borovec Nakládal, sp. n. is described, illustrated and compared with its related species. A key to all Haptomerus species is presented. New data for other species of Haptomerus are presented. The relationships of Haptomerus species are discussed with particular attention to the relationships of species from the Afrotropical region and those from southern Europe.
The genus Eulepida Kolbe, 1894 presently contains 22 species (Lacroix 2017, Sehnal 2018) divided on the base of external and aedeagal morphology into three groups (see Lacroix 2010, 2013 for details). Group II is defined by the combination of the following characters: protibia bidentate; antennal club distinctly longer than antennal shaft; pygidium narrow, longer than wide, with a pronounced elongate terminal invagination; and parameres symmetrical, long, evenly curved in ventral aspect (Lacroix 2010). Until recently this group contained three species, E. anatina Brenske, 1896, E. tschindeana Péringuey, 1904 and E. werneri Lacroix, 2010, to which Lacroix Montreuil (2017) added E. delgadoensis from Mozambique and Sehnal (2018) added E. mbala from Zambia. Shortly after the description of E. mbala I received large series of melolonthines from Zimbabwe and Mozambique, which included another markedly different group II species of Eulepida described below.
The impact of a natural wetland ("dambo" in Zambia) on neutral mine drainage at Luanshya in the Zambian Copperbelt has been investigated during an intermediate discharge period (July) using a multi-method characterization of solid phase samples, sequential extraction analysis, X-ray diffraction, Mössbauer spectroscopy, and scanning electron microscopy combined with water analyses, isotopic analyses, and geochemical modeling. In the wetland, the principal identified solid phases in sediments were carbonates, gypsum, and ferric oxyhydroxides. A significant portion of the ochres was present as insoluble hematite. Mine drainage pH values decrease, and log [Formula: see text] values increase after inflow of water into the wetland; dissolved and suspended concentrations of Fe, Mn, Cu, and Co also decrease. Based on speciation calculations, there is no precipitation of secondary Cu and Co minerals in the period of sampling, but it can occur later in dry period when the flow rate is reduced. Concentrations of sulfate decrease, and values of δ34S(SO4) in the wetland increase in parallel, suggesting sulfate reduction is occurring. In more advanced dry period, the discharge in mine drainage stream is probably much lower and water can reach supersaturation with respect to minerals such as gypsum, which has been found in sediments. Wetlands have a positive impact on mine drainage water quality due to the removal of metals by adsorption, co-precipitation, and filtration of colloids. However, there can also be a rebound of contamination by seepage inflow downstream from the wetland. Ongoing climate change with extreme hydrologic events may enhance differences between dry and rainy seasons with resulting faster mobilization of contaminants.
- MeSH
- adsorpce MeSH
- chemická precipitace MeSH
- chemické látky znečišťující vodu analýza MeSH
- difrakce rentgenového záření MeSH
- filtrace MeSH
- hornictví * MeSH
- klimatické změny * MeSH
- koloidy MeSH
- minerály chemie MeSH
- mokřady * MeSH
- monitorování životního prostředí * metody MeSH
- odpadní voda chemie MeSH
- počasí MeSH
- roční období MeSH
- síran vápenatý chemie MeSH
- sírany analýza MeSH
- těžké kovy analýza MeSH
- uhličitany chemie MeSH
- železité sloučeniny MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Zambie MeSH
New species of Clavigeritae, Monodiger ivoricus sp. n. from Ivory Coast and Disarthricerus bruneicus sp. n. from Brunei are described. New records are given for the following species: Zuluclavodes Hlaváč, 2007 new genus for Zambia, Fustigerinus formicarius Bryant, 1943 (new combination), new genus and species for Ivory Coast and Hoplitoxenus joannae Jeannel, 1960, new genus and species for Cameroon. A new locality in South Africa is recorded for Ischyroceros mirus Reichensperger, 1915.
- MeSH
- anatomické struktury zvířat MeSH
- brouci * MeSH
- rozšíření zvířat MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Asie MeSH
- Brunej MeSH
- Jihoafrická republika MeSH
- Kamerun MeSH
- Pobřeží slonoviny MeSH
- Zambie MeSH
The genus Eulepida Kolbe, 1894 (Coleoptera: Scarabaeidae: Melolonthinae: Leucopholini) was established to accommodate 10 Afrotropical species, seven new and three previously placed in Lepidiota Kirby, 1828, Proagosternus Blanchard, 1851, and Tricholepis Hampson, 1891. Lacroix (2010) designated Leucopholis lepidota Klug, 1855 as the type species of the genus Eulepida. Currently the genus contains 20 species divided into three groups based on morphological characters (Lacroix 2010, 2013): species group I includes Eulepida lepidota (Klug, 1855), E. minor Moser, 1913, E. nitidicollis Kolbe, 1894, E. nyassica Kolbe, 1894, E. sinuatifrons (Fairmaire, 1887), and E. zambiensis Lacroix, 2010; species group II includes E. anatina Brenske, 1896, E. tschindeana Péringuey, 1904, and E. werneri Lacroix, 2010; and species group III includes E. baumanni Kolbe, 1894, E. flavovestita Moser, 1913, E. gracilipes Kolbe, 1894, E. kameruna (Frey, 1972), E. kenyensis Lacroix, 2010, E. mamboiae Brenske, 1896, E. manowensis Moser, 1913, E. mashona Arrow, 1902, E. montana Kolbe, 1894, E. reichei (Thomson, 1858), and E. savagei (Hope, 1842). Examination of material recently collected in Zambia revealed an undescribed species belonging to species group II (sensu Lacroix 2010). This group is defined by the combination of the following characters: protibia bidentate; antennal club distinctly longer than antennal shaft; pygidium narrow, longer than wide, with a pronounced elongate terminal invagination; and parameres symmetrical, long, evenly curved in ventral aspect (Lacroix 2010). The purpose of this paper is to describe one new species, to add new geographic records for some Eulepida species of group II, and to update the key for this group. New faunistic records are reported for Eulepida tschindeana and Eulepida werneri from Zimbabwe.
Oedanomerus Waterhouse, 1875 (Coleoptera: Scarabaeidae: Melolonthinae: Tanyproctini) was established for a single species Oedanomerus hirsutus Waterhouse, 1875 from Botswana. Arrow (1936) later described O. longicornis from Zambia and Frey (1960) described O. pilosus from Mozambique. Evans (1987) revised the genus and described O. capriviensis and O. bicolor from Namibia. Finally, Lacroix (2005) described O. snizeki from Zimbabwe, O. squamosus from Botswana, and O. uhligi from Namibia.
Afrotropical species of the Craspedophorus leprieuri and Craspedophorus regalis groups are revised. C. clasispilus (Alluaud, 1915) and C. guineensis Basilewsky, 1987 are considered as subspecies of C. leprieuri (Laporte de Castelnau, 1835); the synonymized C. peringueyi Csiki, 1929 (=laticollis Péringuey, 1904) is restated as subspecies of C. leprieuri, and it is described C. leprieuri zambianus (DR Congo: Katanga Province; Zambia); C. pseudofestivus Burgeon, 1930 is considered subspecies of C. merus Péringuey, 1904, and it is described C. merus lundanus (Angola, DR Congo: Kasai-Oriental and Katanga Provinces); C. bouvieri imperialis Burgeon, 1930 is considered to be a separate species of C. bouvieri (Rousseau, 1905), and C. bouvieri dux Basilewsky, 1951 is transferred to C. imperialis. The synonymized C. sayersii (Hope, 1842) is considered to be a good subspecies of C. regalis. C. bouvieri crampeli (Alluaud, 1915) is removed from C. bouvieri, and transferred to C. reflexus (Fabricius, 1781) in the C. reflexus species group (Häckel 2016). In this group C. uelensis Burgeon, 1930 is considered to be a subspecies of C. reflexus; and C. bozasi Alluaud, 1930 is synonymized with C. reflexus uelensis Burgeon, 1930. C. arnosti Häckel 2016 is synonymized with C. reflexus crampeli (Alluaud, 1915), C. ethmoides Alluaud, 1930 is synonymized with C. impictus (Boheman, 1848), and C. lebaudyi Alluaud, 1932 is synonymized with C. stanleyi Alluaud, 1930.
Eusocial species of African mole-rats live in groups cooperating on multiple tasks and employing division of labour. In captivity, individuals of the same group differ in cooperative contribution as well as in preference for a particular task. Both can be viewed as polyethism. However, little information is available from free-ranging mole-rats, which live in large burrow systems. We made an attempt to detect polyethism in the free-living Ansell's mole-rat (Fukomys anselli) as differences in individuals' space-use patterns. We radio-tracked 17 adults from five groups. Large individuals, including breeding males, spent more time inside the nest than smaller individuals. Breeding females were more often located <10 m from the nest in comparison to non-breeding females, who were relatively more often located 30-90 m and exclusively >90 m from the nest. One non-breeding female even conducted a brief intrusion into a neighbouring group's territory via an open tunnel connection. A significant part of the variability in mole-rat space-use patterns was explained by body mass which is probably related to age in this species. This result can therefore be attributed to age polyethism. There was no apparent discontinuity in the space-use patterns of non-breeders that would indicate existence of castes.
- MeSH
- kooperační chování * MeSH
- mikroftalmičtí podzemní hlodavci fyziologie MeSH
- prostorové chování fyziologie MeSH
- rozmnožování fyziologie MeSH
- sexuální faktory MeSH
- společenská třída MeSH
- věkové faktory MeSH
- zvířata MeSH
- Check Tag
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Zambie MeSH
