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Productivity and resistance of okra (Abelmoschus spp.) to the cotton aphid Aphis gossypii glover (Hemiptera: Aphididae) under tropical conditions
Aphis gossypii Glover (Hemiptera: Aphididae) is among major arthropods causing significant damage to okra in the tropics. Resistant varieties could reduce aphid infestation and increase productivity. This study was carried out to identify aphid-resistant and high yielding okra accessions for management of the pest. Eleven farmers’ varieties and four aphid-resistant accessions from AVRDC were evaluated at its Nkolbisson station in Yaounde, Cameroon. Field screening was done to determine resistance to aphids, days to 50% anthesis and days to 50% commercial maturity. Aphid data was expressed as the area under infestation pressure curve and subjected to statistical analysis based on mean (m) and standard deviation (S.D.). Crop cycle and yield data were subjected to analysis of variance. Accession ‘VI033824’ was the most resistant to aphids (474 ± 41.9 per leaf) with yield 0.76 ± 0.26 t/ ha whereas the yield of the highly susceptible Babungo (1519.8 ± 0.0 aphids) was 1.33 ± 0.07 t/ha, 75.5% higher that the yield of the only resistant variety. Abelmoschus esculatus was less attacked (601.4 ± 60.0 aphids) by aphids than Abelmoschus caillei (826.0 ± 71.6 aphids; df = 1, 41; Pr {>Chi} = 0.037). The yield of A. caillei species were higher (1.26 ± 0.14 t/ha) than A. esculentus species (0.43 ± 0.08 t/ha; df = 1, 41; Pr {>Chi} = 0.0002). Hence, varieties with resistance, tolerance to aphids and earliness could be incorporated into integrated pest management of aphids and enhance productivity of okra
Black-bellied pangolin Phataginus tetradactyla documented in Deng Deng National Park, Cameroon, using camera traps
Information on pangolin life history and ecology is becoming increasingly available in African countries through community based surveys and camera-trapping. However, there is a paucity of information on the largely arboreal black-bellied pangolin Phataginus tetradactyla, which is categorized as Vulnerable on the IUCN Red List. By targeting fallen trees or logs with camera traps we recorded the black-bellied pangolin opportunistically in Deng Deng National Park (East Region, Cameroon), a locality within the presumed distribution of the species within Cameroon. We obtained a low trapping rate of 0.063 events per 100 trap days and the capture probability was one event recorded over 1571 trap-days (0.0006 captures per day). Deploying camera traps that focus on fallen trees or logs could be explored as a method for detecting black-bellied pangolins
Using local ecological knowledge to improve the effectiveness of detecting white-bellied pangolins (Phataginus tricuspis) using camera traps: A case study from Deng-Deng National Park, Cameroon
First paragraph: Pangolins (Order: Pholidota) remain one of the most challenging groups of mammals to detect and study. Yet, locating and documenting pangolin presence is essential to provide data on their distribution and population, which help to build effective conservation strategies. Pangolins are considered to be elusive and many of their ecological traits, such as low population density, largely nocturnal and solitary lifestyle, and use of burrows and cavities make it difficult to gather relevant information from commonly used monitoring approaches that are effective for other mammals (Ingram, Willcox, & Challender, 2019; Nash, Wong, & Turvey, 2016; Willcox et al., 2019). The white-bellied pangolin, Phataginus tricuspis, is a semi-arboreal species that feeds exclusively on ants and termites (Akpona, Djagoun, & Sinsin, 2008; Kingdon et al., 2013). They typically inhabit dense forest though also occur in forest–savannah–crop mosaics at times(Pietersen et al., 2019). The ecology of this species is poorly known due in part, to the challenges of studying pangolins and a lack of standardised research methods. (Willcox et al., 2019). Here, we evaluate the utility of local ecological knowledge (LEK) in tailoring camera-trap surveys, a detection method increasingly used for pangolins, to improve detection efficiency for occurrence and ecological studies for the white-bellied pangolin
Brachytrupes mauritanicus Chopard 1952, stat. nov.
Species <i>Brachytrupes mauritanicus</i> Chopard, 1952 stat. nov. (Table 2, Fig. 4) <p> <i>Brachytrypes membranaceus mauritanicus</i> Chopard. 1952: p. 465</p> <p> <b>Type material:</b> syntypes (1 male, 1 female), Africa, West Tropical Africa, Sierra Leone, MNHN (male listed as holotype)</p> <p> <b>Description</b> (Chopard 1952). Body quite small, color entirely testaceous yellowish with a brown stripe along the posterior edge of the pronotum. Head large, almost alike in both sexes, yellow, with a narrow brown band between the eye spots; the tubercles bearing these ocelli are very weak in the male, nil in the female; forehead somewhat concave, with projecting edges; upper edge of the clypeus narrowly edged with brown. Pronotum rather greatly enlarged in front, the anterior edge concave, very narrowly brown, the posterior edge a little sinuate. Legs completely yellowish; reinforcement of the posterior tibiae weak, especially at the external edge; posterior metatarsus armed with 3 or 4 weak spinules on each superior edge. Mirror as wide as long, less elongated and more rounded in front; apical field veins very regular.</p>Published as part of <i>Simeu-Noutchom, Alain, Heller, Klaus-Gerhard, Nyobe, Philene Corinne Aude Um & Kekeunou, Sevilor, 2023, Taxonomy review of the genus Brachytrupes (Orthoptera: Gryllidae) with the description of a new species and key to the species, pp. 373-388 in Zootaxa 5336 (3)</i> on page 380, DOI: 10.11646/zootaxa.5336.3.4, <a href="http://zenodo.org/record/8281577">http://zenodo.org/record/8281577</a>
Brachytrupes calaharicus
Species <i>Brachytrupes calaharicus</i> (Karny, 1910) (Table 1) <p> <i>Gymnogryllus calaharicus</i> Karny, 1910: p. 44</p> <p> <b>Type material:</b> lectotype female, Africa, Southern Africa, Botswana, Leclake-Lekutuku. MfN.</p> <p> <b>Description</b> (Karny 1910, Otte 1988). Medium-sized, shiny, macropterous. Differs from <i>B. testaceus</i> in having a blackish pronotum, dark brown forewings, and dark brown hind legs. Head reddish brown on occiput and vertex, becoming black anteriorly, black between the lateral ocelli; median ocellus absent; forehead with depression behind interocular suture; clypeus strongly convex, black on the upper and pale on lower surface; mandibles with a strong vertical outer ridge; cheeks reddish brown. Pronotum blackish; dorsum with an undulating surface, with concave sides (dorsal view), front wider than rear. Dark brown forewings, extending beyond the end of the abdomen. Hind wings extending beyond ends of cerci. Front legs: femora and tibiae laterally compressed, with rows of long setae; tibiae with large outer and much smaller inner tympanum; apical spurs knife-like and concave on inner side. Middle legs: not as compressed as front legs, with shorter setae and relatively longer basal tarsomere. Hind legs: dark brown; femora narrow, 0.24 times longer than wide. Species very similar to <i>B. testaceus.</i></p>Published as part of <i>Simeu-Noutchom, Alain, Heller, Klaus-Gerhard, Nyobe, Philene Corinne Aude Um & Kekeunou, Sevilor, 2023, Taxonomy review of the genus Brachytrupes (Orthoptera: Gryllidae) with the description of a new species and key to the species, pp. 373-388 in Zootaxa 5336 (3)</i> on page 376, DOI: 10.11646/zootaxa.5336.3.4, <a href="http://zenodo.org/record/8281577">http://zenodo.org/record/8281577</a>
Brachytrupes Serville 1838
Genus <i>Brachytrupes</i> Serville, 1838 Synonyms <p> <i>Brachytrypes</i> Agassiz, 1846</p> <p> <i>Brachytrypus</i> Saussure, 1877</p> <p> Type species <i>Gryllus megacephalus</i> Lefebvre, 1827, here designated (see below)</p>Published as part of <i>Simeu-Noutchom, Alain, Heller, Klaus-Gerhard, Nyobe, Philene Corinne Aude Um & Kekeunou, Sevilor, 2023, Taxonomy review of the genus Brachytrupes (Orthoptera: Gryllidae) with the description of a new species and key to the species, pp. 373-388 in Zootaxa 5336 (3)</i> on page 374, DOI: 10.11646/zootaxa.5336.3.4, <a href="http://zenodo.org/record/8281577">http://zenodo.org/record/8281577</a>
Brachytrupes Serville 1838
Bioacoustics of <i>Brachytrupes</i> <p> The calling song of <i>Brachytrupes bapaensis</i> <b>sp. nov.</b> consisted of a loud continuous trill, which was heard and recorded several minutes without interruption (Fig. 6). The carrier frequency band of the song has its peak near 4.3 kHz, and the syllable period is about 8.6 ms corresponding to a SRR of 115 Hz. In both parameters the song is thus similar to that known from other <i>Brachytrupes</i> species (Table 3). The asiatic counterpart <i>Tarbinskiellus portentosus,</i> has also a similar song, but a lower SRR (Table 3). The stridulatory file of this species carries much more teeth (81–85) (Ahmad & Khan 2013) which are more densely packed (20 teeth/mm) (Ahmad & Khan 2013; but density 9.4 teeth/mm in the middle of the file [Godthi <i>et al.</i> 2022]) than in <i>B. bapanensis</i> <b>sp. nov.</b>. The calling song of <i>Brachytrupes tropicus</i> consisted of a loud, low-pitched continuous trill, which is emitted during several minutes without interruption. Pulse and interpulse durations are quite constant. The frequency band of the song ranged from 4.8 to 6.4 kHz with the peak near 5.7 kHz and a SRR of 118 Hz (Table 3, Desutter-Grandcolas 1998).</p>Published as part of <i>Simeu-Noutchom, Alain, Heller, Klaus-Gerhard, Nyobe, Philene Corinne Aude Um & Kekeunou, Sevilor, 2023, Taxonomy review of the genus Brachytrupes (Orthoptera: Gryllidae) with the description of a new species and key to the species, pp. 373-388 in Zootaxa 5336 (3)</i> on page 383, DOI: 10.11646/zootaxa.5336.3.4, <a href="http://zenodo.org/record/8281577">http://zenodo.org/record/8281577</a>
Brachytrupes testaceus
Species <i>Brachytrupes testaceus</i> (Karny, 1910) (Table 1, Fig. 1) <p> <i>Gymnogryllus testaceus</i> Karny, 1910: p. 45</p> <p> <b>Type material:</b> holotype ♀, Africa, Southern Africa, Botswana, Kalahari, Severelela-Kakir. MfN.</p> <p> <b>Description</b> (Karny 1910, Otte 1988). Small body, pale straw-coloured. Head, pronotum, and forewings smooth and shiny. Front legs with rows of very long bristles. Pronotum saddle-shaped. Last tergal segment of hind tarsi, bulbous at distal end. Head: straw-coloured, forehead between lateral ocelli dark brown, median ocellus missing, face yellowish, but upper lobe of clypeus may be reddish or dark brown; clypeus strongly convex, and the cheeks straw-coloured. Pronotum: saddle-shaped with strongly concave sides (dorsal view) and with outer portions of muscle attachment plates grooved; dorsum pale brown but muscle attachment plates darker brown; lateral lobes pale. Forewings straw-colored, extending beyond the abdomen. Hind wings of examined males had been shed; abdomen pale. Front legs: tibiae with very long, thin bristles arranged into one ventral and two dorsal rows; apical spurs long, sharp, and concave on inner face, middle one longest. Middle legs: tibiae shorter and with fewer bristles than front tibiae. Hind legs: femora with distinct or indistinct oblique brown stripes on middle of outer surface, and with an inner and an outer brown patch proximal to knees; tibiae with a row of bristles along outer edge of posterior margin; spurs 0-1 and i-1 very short, spurs 0-2,0-3; i-2 and i-3 long and sharp and not bearing bristles; third tarsal segment bulbous at distal end.</p> <p> <b>Female</b>. Similar in coloration and size to males. Forewings extend about five times longer than pronotum.</p>Published as part of <i>Simeu-Noutchom, Alain, Heller, Klaus-Gerhard, Nyobe, Philene Corinne Aude Um & Kekeunou, Sevilor, 2023, Taxonomy review of the genus Brachytrupes (Orthoptera: Gryllidae) with the description of a new species and key to the species, pp. 373-388 in Zootaxa 5336 (3)</i> on page 377, DOI: 10.11646/zootaxa.5336.3.4, <a href="http://zenodo.org/record/8281577">http://zenodo.org/record/8281577</a>