1,721,117 research outputs found
Fig. 1 in The South African keystone pollinator Moegistorhynchus longirostris (Wiedemann, 1819) (Diptera: Nemestrinidae): notes on biology, biogeography and proboscis length variation
No full textFig. 1. Adult Moegistorhynchus longirostris with (A) characteristic hovering posture near a flower of Lapeirousia anceps (Iridaceae), and then (B) inserting its elongate proboscis into the long, narrow floral-tube. (Courtesy C. Patterson-Jones)Published as part of Barraclough, David & Slotow, Rob, 2010, The South African keystone pollinator Moegistorhynchus longirostris (Wiedemann, 1819) (Diptera: Nemestrinidae): notes on biology, biogeography and proboscis length variation, pp. 397 in African Invertebrates 51 (2) on page 398, DOI: 10.5733/afin.051.0208, http://zenodo.org/record/791370
Fig. 2 in The South African keystone pollinator Moegistorhynchus longirostris (Wiedemann, 1819) (Diptera: Nemestrinidae): notes on biology, biogeography and proboscis length variation
No full textFig. 2. Distribution of Moegistorhynchus longirostris along the west coast of South Africa (Northern Cape and Western Cape Provinces), showing its restriction to lowland areas below 300 m. M. brevirostris is distributed between 1 and 2 in the extreme southwest, north of Cape Town.Published as part of Barraclough, David & Slotow, Rob, 2010, The South African keystone pollinator Moegistorhynchus longirostris (Wiedemann, 1819) (Diptera: Nemestrinidae): notes on biology, biogeography and proboscis length variation, pp. 397 in African Invertebrates 51 (2) on page 400, DOI: 10.5733/afin.051.0208, http://zenodo.org/record/791370
FIGURE 4c in A revision of the taxonomy and distribution of Archispirostreptus Silvestri 1895 (Diplopoda, Spirostreptida, Spirostreptidae), and description of a new spirostreptid genus with three new species
No full textFIGURE 4c. Archispirostreptus dodsoni (BMNH 1897.11.10.87). c, oral view of prefemoral lobe of first pair of male legs.Published as part of Mwabvu, Tarombera, Hamer, Michelle, Slotow, Rob & Barraclough, David, 2010, A revision of the taxonomy and distribution of Archispirostreptus Silvestri 1895 (Diplopoda, Spirostreptida, Spirostreptidae), and description of a new spirostreptid genus with three new species, pp. 1-49 in Zootaxa 2567 on page 15, DOI: 10.5281/zenodo.19728
Archispirostreptus sumptuosus Silvestri 1896
No full text<i>A. sumptuosus</i> Silvestri 1896 b, p. 60–61, fig. 3. <p>The species description was based on a female specimen from Somalia. The location of the type material is unknown.</p>Published as part of <i>Mwabvu, Tarombera, Hamer, Michelle, Slotow, Rob & Barraclough, David, 2010, A revision of the taxonomy and distribution of Archispirostreptus Silvestri 1895 (Diplopoda, Spirostreptida, Spirostreptidae), and description of a new spirostreptid genus with three new species, pp. 1-49 in Zootaxa 2567</i> on page 44, DOI: <a href="http://zenodo.org/record/197288">10.5281/zenodo.197288</a>
Cacuminostreptus
No full textKey to the species of Cacuminostreptus based on male gonopods 1. Apical metaplical process triangular (Fig. 13 a) ............................................................................... triangulatus sp. n. - Apical metaplical process not triangular...................................................................................................................... 2 2. Oral fold of apical metaplical process longer and narrower than aboral fold; distally oral fold deflected laterally (Fig. 11 a) ...................................................................................................................................................................... conatus - Oral fold of apical metaplical process not longer than aboral fold; distally oral fold not deflected laterally............. 3 3. Lateral margins of metaplicae strongly convex; apex of apical metaplical process concave and straight laterally, with small lateral and medial horns apically (Figs 12 a, 12 b) ................................................................... mazowensis sp. n. - Lateral margins of metaplicae not strongly convex; apex of apical metaplical process flat and convex laterally, with- out lateral and medial horns apically (Figs 14 a, 14 b) ....................................................................... vumbaensis sp. n.Published as part of Mwabvu, Tarombera, Hamer, Michelle, Slotow, Rob & Barraclough, David, 2010, A revision of the taxonomy and distribution of Archispirostreptus Silvestri 1895 (Diplopoda, Spirostreptida, Spirostreptidae), and description of a new spirostreptid genus with three new species, pp. 1-49 in Zootaxa 2567 on page 43, DOI: 10.5281/zenodo.19728
Spirostreptus arabs Pocock 1895
No full textS. arabs Pocock 1895, p. 298–299. This species was described from Hadramaut, Yemen. Although Krabbe (1982) listed this species under Archispirostreptus she doubted this placement. We concur that arabs should be assigned to a different genus, however, without the type material or new material any placement would be tentative. The type material is missing from the BMNH collection; this was confirmed by the curator, Janet Beccaloni. According to Hoffman (2008) the Spirostreptini are characterised by a bifid or trifid prostatic groove with each branch ending in a small process. Although the distal trifurcate ending of the telopodite in arabs is consistent with the Spirostreptini it is unclear from the drawing whether the prostatic groove also has three distal branches. The antetorsal process of the gonopods of arabs is very short and does not extend beyond the knee bend of the telopodite. The antetorsal process of arabs also lacks the distal spikes which characterise Archispirostreptus. In addition, the proximal half of the free telopodite is broad with a side spine and the prefemoral process of the first pair of male legs is rectangular without distal tapering as in Archispirostreptus species.Published as part of Mwabvu, Tarombera, Hamer, Michelle, Slotow, Rob & Barraclough, David, 2010, A revision of the taxonomy and distribution of Archispirostreptus Silvestri 1895 (Diplopoda, Spirostreptida, Spirostreptidae), and description of a new spirostreptid genus with three new species, pp. 1-49 in Zootaxa 2567 on page 43, DOI: 10.5281/zenodo.19728
The use of contraceptive techniques in managed wild African lion (Panthera leo) populations to mimic open system cub recruitment
Full text linkArticle and Supplementary MaterialMcEvoy, Orla K.; Miller, Susan M.; Beets, Warren; Bodasing, Tarik; Borrego, Natalia; Burger, André; Courtenay, Brian; Ferreira, Sam; Hanekom, Cathariné; Hofmeyr, Markus; Packer, Craig; Robertson, Dave; Stratford, Ken; Slotow, Rob. (2019). The use of contraceptive techniques in managed wild African lion (Panthera leo) populations to mimic open system cub recruitment. Retrieved from the University Digital Conservancy, 10.1071/WR18079
Archispirostreptus bottegi Silvestri 1895
No full textArchispirostreptus bottegi Silvestri 1895 Fig. 2 Archispirostreptus Bottegi Silvestri 1895, p. 489, fig. 7. Graphidostreptus bottegi: Attems 1914 Archispirostreptus bottegi: Hoffman 1965; Krabbe 1982 Type material: Syntypes: ETHIOPIA: 13, 1 Ƥ, Ogaden.Archeisa (Harra-es-saghir), 12.x. 1892, V. Bottego (MSNG uncatalogued) Diagnosis: Apex of proplica rounded; apical metaplical process wider apically, thumb-like; post-knee telopodite with two coils (Figs 2 a, 2 b). Description: Size: Body length 120–130 mm; maximum body width 10–12 mm. Number of body rings: 54–56. Colour: Black. Collum: Antero-lateral corners not produced into lobes, square shaped, with 2 complete striae (Fig. 2 d). Pre-femoral process of 1 st pair of male legs: Triangular; proximally broad, with tapering distal extension (Fig. 2 c). Gonopod: (Figs 2 a, 2 b) Sternum triangular; paracoxite conical. Proplica width same along length; apex of proplica finger-like and overlapping proximal lateral metaplical process. Opposite metaplicae separate at level of paracoxite apex. Lateral metaplical process horizontal, tapering distally and at right angle to apical metaplical process. Apical metaplical processes thumb-shaped and parallel and about 2 / 3 length of lateral metaplical process. Telopodite with two post-knee spirals, distal spiral at level of paracoxite. Origin of antetorsal process at knee; apex of antetorsal process extending past apex of paracoxite, with long spikes. Distribution: Known only from Ogaden, Ethiopia. Remarks: The gonopods of A. bottegi and A. beccarii are distinguished by the apical shapes of the proplicae and apical metaplical processes, and the number of spirals of the telopodite. Archispirostreptus bottegi has a telopodite with two spirals and long spikes on the antetorsal process (see remarks under A. beccarii).Published as part of Mwabvu, Tarombera, Hamer, Michelle, Slotow, Rob & Barraclough, David, 2010, A revision of the taxonomy and distribution of Archispirostreptus Silvestri 1895 (Diplopoda, Spirostreptida, Spirostreptidae), and description of a new spirostreptid genus with three new species, pp. 1-49 in Zootaxa 2567 on pages 5-10, DOI: 10.5281/zenodo.19728
Impediments to the success of management actions for species recovery
No full textFinding cost-effective management strategies to recover species declining due to multiple threats is challenging, especially when there are limited resources. Recent studies offer insights into how costs and threats can influence the best choice of management actions. However, when implementing management actions in the real-world, a range of impediments to management success often exist that can be driven by social, technological and land-use factors. These impediments may limit the extent to which we can achieve recovery objectives and influence the optimal choice of management actions. Nonetheless, the implications of these impediments are not well understood, especially for recovery planning involving multiple actions. We used decision theory to assess the impact of these types of impediments for allocating resources among recovery actions to mitigate multiple threats. We applied this to a declining koala (Phascolarctos cinereus) population threatened by habitat loss, vehicle collisions, dog attacks and disease. We found that the unwillingness of dog owners to restrain their dogs at night (a social impediment), the effectiveness of wildlife crossings to reduce vehicle collisions (a technological impediment) and the unavailability of areas for restoration (a land-use impediment) significantly reduced the effectiveness of our actions. In the presence of these impediments, achieving successful recovery may be unlikely. Further, these impediments influenced the optimal choice of recovery actions, but the extent to which this was true depended on the target koala population growth rate. Given that species recovery is an important strategy for preserving biodiversity, it is critical that we consider how impediments to the success of recovery actions modify our choice of actions. In some cases, it may also be worth considering whether investing in reducing or removing impediments may be a cost-effective course of action
The push and pull of land use policy: reconstructing 150 years of development and conservation land acquisition.
Full text linkThe growth of human populations and their resource needs have stressed the conservation of natural land resources. Many policies and programs have been implemented to address the pressures on land resources and notwithstanding this pressure, significant acquisition of land for conservation has occurred throughout history in the U.S., and internationally. Here we assess the on-the-ground result of the evolution of land use policies in California as a pioneer forerunner, in the form of acquisition of land for conservation (i.e. Open Space), and its impact on the rest of the U.S. and beyond. To this end we describe the timeline and spatial representation of the growth of California's conservation network over the last 150 years, and link it to the history of land use policies. We then assess whether conservation land acquisition has consistently grown through time or occurred in specific decades. About ¼ of the state is now designated Open Space. Fewer and larger areas conserved and acquired at the beginning of the 20th century; the conservation network was complemented with a larger number of smaller sized properties. Despite acquisition of land in every decade, the process was uneven (E = 0.3 for California, E = 0.14 ± 0.08 average for the state's counties), mostly due to the large acquisitions and land set asides in the 1900s, followed by 1930s and 1940s. This process was a result of a comprehensive set of legislation that evolved through time, and resulted from the competing needs for development and conservation. Even with the impressive 174,000 km2 of public lands in California, the future of California's natural infrastructure and natural heritage cannot rely solely on these public lands, nor public agencies and their resources. Critically a future course of land preservation relying on the purchase of new lands - in California and beyond - for conservation is tremendously expensive
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