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2022 ◽  
Vol 9 ◽  
Author(s):  
Ignacio Crudele ◽  
Juan C. Reboreda ◽  
Vanina D. Fiorini

Avian brood parasites lay their eggs into the nests of other species, which incubate them and raise the chicks until their independence. Despite living their early weeks of life surrounded by heterospecifics, young brood parasites have the ability to recognize and associate to conspecifics after independence. It has been proposed that the initial conspecific recognition develops when a young parasite encounters a unique species-specific signal that triggers the learning of other aspects of the producer of the signal. For cowbirds (Molothrus spp.), this species-specific signal is hypothesized to be the chatter call. Young birds also could express auditory biases, which in some cases lead to discrimination in favor of conspecific songs. Therefore, the perceptual selectivity for chatters might be also present in nestlings. Our aim was to assess if nestlings of the shiny cowbird (M. bonariensis) present a preferential begging response to conspecific chatter calls. We evaluated if they respond more to the parasitic vocalization than host chicks and if they respond more to the chatter than to heterospecific nonhost calls. We tested shiny cowbird chicks reared by chalk-browed mockingbirds (Mimus saturninus) or house wrens (Troglodytes aedon) and host chicks, as control species. We randomly presented to 6-day-old chicks the following playback treatments: (1) conspecific chatter calls, (2) host calls, used as positive controls, and (3) nonhost calls, used as negative control. We measured if chicks begged during the playback treatments and the begging intensity. When responding to the playback of chatter calls, shiny cowbird chicks begged at a higher frequency and more intensively than host chicks. Shiny cowbird chicks reared by mockingbirds begged more intensively to playbacks of conspecific chatter calls than to host calls, while those reared by wrens begged with a similar intensity to playbacks of conspecific chatter and host calls. On the contrary, wren nestlings begged more intensively to playbacks of the wren call than to chatter calls. Mockingbird nestlings did not beg during any treatment. None of the three species begged during the playback of nonhost calls. Our results show that the chatter call produced a preferential begging response in cowbird nestlings, which may be the beginning of a process of conspecific recognition.


2021 ◽  
Vol 51 (4) ◽  
pp. 345-352
Author(s):  
Sang-Tae KIM ◽  
Sang-Hun OH ◽  
Jongsun PARK

Diarthron linifolium Turcz. is an annual herb usually found in sandy soil or limestone areas. Plants in the genus Diarthron are known to have toxic chemicals that may, however, be potentially useful as an anticancer treatment. Diarthron linifolium is a unique species among the species of the genus distributed in Korea. Here, we determine the genetic variation of D. linifolium collected in Korea with a full chloroplast genome and investigate its evolutionary status by means of a phylogenetic analysis. The chloroplast genome of Korean D. linifolium has a total length of 172,644 bp with four subregions; 86,158 bp of large single copy and 2,858 bp of small single copy (SSC) regions are separated by 41,814 bp of inverted repeat (IR) regions. We found that the SSC region of D. linifolium is considerably short but that IRs are relatively long in comparison with other chloroplast genomes. Various simple sequence repeats were identified, and our nucleotide diversity analysis suggested potential marker regions near ndhF. The phylogenetic analysis indicated that D. linifolium from Korea is a sister to the group of Daphne species.


2021 ◽  
pp. 105-111
Author(s):  
Mahakata Innocent ◽  
Gonhi Prudence ◽  
Matindike Spencer ◽  
Masumba Yvonne ◽  
Hungwe Christopher

The Smutsia temminckii is the only species of pangolin known to exist in Zimbabwe and is considered vulnerable under the IUCN Red List of threatened species. Distribution of wild S. temminckii in protected areas (PAs) and associated environmental variables are not well defined in Zimbabwe. The study sort to relate key environmental variables (Altitude, rainfall, temperature and vegetation type) to habitat occupancy and distribution of S. temminckii. Data was collected from forty-eight stations based on S.temminckii sightings historical records spanning ten years (2011-2021) done by field rangers, tourists and scientific services research personnel. A review of available literature was done from online sources and station records. A distribution map based on S. temminckii sightings across various PAs in Zimbabwe was developed for this study. Results of this study reveal that S. temminckii occupy PAs in South East low-veld areas, Northwestern Zimbabwe, Mid Zambezi Valley and Nyanga NP. No historical data on S. temminckii sighting in central PAs located in ecological regions IIa, IIb and III of Zimbabwe. Climatic conditions associated with S. temminckii distribution, except for Nyanga NP, are average temperatures above 220C and rainfall between 400mm to 900mm per annum. Landscapes ideal for S. temminckii habitat occupancy have an altitude between 262m-2000m above sea level. Associated vegetation types for habitat occupancy of S. temminckii are the Zambezian and mopane woodlands as well as montane forest grasslands mosaic of Nyanga NP. Future studies should focus on establishing distribution of S. temminckii outside PA, population status and density to inform conservation of this rare and unique species around Zimbabwe.


Plants ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 2811
Author(s):  
Rodrigo A. Chorbadjian ◽  
María I. Ahumada ◽  
Francisco Urra ◽  
Mario Elgueta ◽  
Todd M. Gilligan

Identifying the particular guilds of herbivore arthropods that affect the production of crops is key to developing sustainable pest-management strategies; however, there is incomplete information about the identity of herbivore arthropods that could potentially damage the production of both highland and lowland quinoa landraces grown in Chile. By both reviewing the literature and conducting field collections across a large latitudinal gradient, we generated an updated list of 43 herbivore arthropods associated with quinoa production in Chile. In general, most species are polyphagous feeders, and only seven are specialists. The number and identity of species varied in relation with the latitude, such that four distinctive assemblages of herbivores were identified, each containing 32, 27, 34, and 22 species between latitudes 18–26, 26–32, 32–40, and 40–44° S, respectively. The most northern production area (18–26° S) is affected by nine unique species, including the major quinoa pest Eurysacca quinoae Povolný (Lepidoptera: Gelechiidae). Similarly, the central area (32–40° S) contains four unique species, including Eurysacca media Povolný (Lepidoptera: Gelechiidae) and Orthotylus flavosparsus (Sahlberg) (Hemiptera: Miridae). The particular species assemblages described here will help further development of local pest-management practices.


Zootaxa ◽  
2021 ◽  
Vol 5081 (4) ◽  
pp. 451-482
Author(s):  
LECH KARPIŃSKI ◽  
DAVAADORJ ENKHNASAN ◽  
BAZARTSEREN BOLDGIV ◽  
LECH KRUSZELNICKI ◽  
BADAMNYAMBUU IDERZORIG ◽  
...  

New data on the distribution, bionomy, and taxonomy of the longhorned beetles that occur in the poorly studied region of southeastern Mongolia (Ömnögovi, Dornogovi, and Sükhbaatar aimags) are presented together with a list of all taxa that are known from this area. The literature records for all known species from this area were summarized, verified, and mapped. Chlorophorus caragana Xie & Wang, 2012 is recorded from Mongolia for the first time. New localities of some little-known taxa that are endemic to Mongolia and adjacent territories, such as Anoplistes halodendri minutus Hammarström, 1892, Anoplistes kaszabi Karpiński, 2020, and Eodorcadion gorbunovi Danilevsky, 2004 are given. High-quality stacked images of several unique species, e.g., Anoplistes gobiensis (Namkhaidorzh, 1973), Ch. caragana, and Chlorophorus obliteratus (Ganglbauer, 1889) are presented for the first time along with photographs of their habitats. New remarks on highly complex taxonomic issues concerning some species in the genera Anoplistes, Chlorophorus, and Eodorcadion are also provided.  


2021 ◽  
Vol 13 (24) ◽  
pp. 13590
Author(s):  
Anne-Maria Schweizer ◽  
Lucas Höschler ◽  
Manuel J. Steinbauer

Climbing activities affect cliff site species. With cliff sites harbouring unique species communities, the rise in popularity of outdoor climbing activities is a major threat. In this study, we assessed a previously unclimbed boulder before, during and after 500 climbing ascents. We observed an overall reduction in lichen cover by 4.2–9.5%, located around the footholds and combined foot- and handhold but not the handhold. We found the reduction in lichen cover to be strongest at the very start of the climbing treatment and to lessen over time. Therefore, management should focus on directing climbing activities to selected sites, while protecting sites with high conservation value where climbing is prohibited entirely.


2021 ◽  
Author(s):  
◽  
Michaela Thomson

<p>Currently within the Wellington region there is an abundance of green spaces hosting a variety of native and exotic wildlife species (Rastandeh, Brown, & Pedersen Zari, 2018; “The Sanctuary,” 2018). These species are somewhat confined to a ‘home’ green space, in that travel between habitats involves difficult navigation between dense urban and residential structures (Forman, 1995; Rastandeh, Brown, et al., 2018). Many native species are not able to make long distance flights (Wittern & Berggren, 2007); and as a result habitat fragmentation is occurring at a rapid ecological level. The built form is limiting and discouraging wildlife movement, as well as being dangerous for smaller animals (Forman, 1995; Santiago, 2014). Currently tiny patches of vegetation provide wildlife with a directional indication of intended movement, but overall urban planning is designed for humans only.  Aside from the lack of possible movement between habitats, there is also an absence of human connections to these spaces. There is a missed opportunity to introduce humans to ecological spaces, in that it allows a physical link and understanding to be achieved, as well as additional wellbeing benefits (Ell, 1981a; Santiago, 2014).   With these two existing elements; the lack of wildlife movement between established habitats and the connectivity of humans to these spaces, there is also a third element of how interaction between people and wildlife within urban locations is absent. People are stuck with contributing towards the rapid decline of habitat, there are very limited positive interactions that are being utilised (Rastandeh, Brown, et al., 2018; Santiago, 2014). Infrastructure and specific designed elements that provide the correct facilities to allow for interactions between wildlife and humans is largely non-existent and crucial in the face of biodiversity loss and fragmentation.  This thesis aims to establish a set of design guidelines towards understanding how interaction can be utilised within the design profession, as a way to reduce biodiversity loss, fragmentation and to increase exposure to unique species. Exploration at different scales, macro, meso and micro will be addressing different issues to answer the question of what types of interactions will be occurring within these spaces.</p>


2021 ◽  
Author(s):  
◽  
Michaela Thomson

<p>Currently within the Wellington region there is an abundance of green spaces hosting a variety of native and exotic wildlife species (Rastandeh, Brown, & Pedersen Zari, 2018; “The Sanctuary,” 2018). These species are somewhat confined to a ‘home’ green space, in that travel between habitats involves difficult navigation between dense urban and residential structures (Forman, 1995; Rastandeh, Brown, et al., 2018). Many native species are not able to make long distance flights (Wittern & Berggren, 2007); and as a result habitat fragmentation is occurring at a rapid ecological level. The built form is limiting and discouraging wildlife movement, as well as being dangerous for smaller animals (Forman, 1995; Santiago, 2014). Currently tiny patches of vegetation provide wildlife with a directional indication of intended movement, but overall urban planning is designed for humans only.  Aside from the lack of possible movement between habitats, there is also an absence of human connections to these spaces. There is a missed opportunity to introduce humans to ecological spaces, in that it allows a physical link and understanding to be achieved, as well as additional wellbeing benefits (Ell, 1981a; Santiago, 2014).   With these two existing elements; the lack of wildlife movement between established habitats and the connectivity of humans to these spaces, there is also a third element of how interaction between people and wildlife within urban locations is absent. People are stuck with contributing towards the rapid decline of habitat, there are very limited positive interactions that are being utilised (Rastandeh, Brown, et al., 2018; Santiago, 2014). Infrastructure and specific designed elements that provide the correct facilities to allow for interactions between wildlife and humans is largely non-existent and crucial in the face of biodiversity loss and fragmentation.  This thesis aims to establish a set of design guidelines towards understanding how interaction can be utilised within the design profession, as a way to reduce biodiversity loss, fragmentation and to increase exposure to unique species. Exploration at different scales, macro, meso and micro will be addressing different issues to answer the question of what types of interactions will be occurring within these spaces.</p>


2021 ◽  
Vol 78 ◽  
pp. 1-5
Author(s):  
S. Alipour ◽  
I. Mehregan ◽  
M. Lidén

Dionysia splendens Alipour, Mehregan & Lidén, sp. nov., from Fars, Iran, is a unique species that cannot be easily accommodated in any hitherto recognised section of the genus and is immediately recognised by its large flowers and pectinate leaves with very broad pale and thick midvein. It agrees with Dionysia cespitosa Duby (Boiss.) in the small flat leaves, stalked inflorescence with large bracts, and few large ellipsoid seeds, but differs in the tubular calyx and large purplish-blue corolla. It is also somewhat reminiscent of Dionysia viva Lidén & Zetterl. in growth habit and inflorescence structure, but that species has large irregularly dentate leaves, yellow corolla and numerous small angular seeds. Dionysia splendens is so far known from a single locality with c.200 mature individuals. An updated key to Dionysia species in the Zagros mountains is provided.


2021 ◽  
Vol 9 ◽  
Author(s):  
Mati Breski ◽  
Daniel Dor

What makes humans a unique species? How did ancient humans evolve to live together and cooperate with each other? Research on the evolution of prehistoric humans shows that we have some characteristics in common with domesticated animals, like dogs, cows, and pigs. These similarities led researchers to propose that the human species has also undergone a type of domestication, which decreased our aggression and increased our social nature. In this article, we examine this idea and present an alternative: that the human species did not become domesticated like pets or farm animals, but instead evolved the ability to control its emotions, similar to other highly social species, like wolves. Emotional control allows us to restrain our aggression or promote it, depending on the situation. We think that emotional control is what allowed the human species to develop unique ways of communication in the animal kingdom.


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