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14 results for “common myna”
Data from: The genome of a globally invasive passerine, the common myna, Acridotheres tristis
<p>In an era of global climate change, biodiversity conservation is receiving increased attention. Conservation efforts are greatly aided by genetic tools and approaches, which seek to understand patterns of genetic diversity and how they impact species health and their ability to persist under future climate regimes. Invasive species offer vital model systems in which to investigate questions regarding adaptive potential, with a particular focus on how changes in genetic diversity and effective population size interact with novel selection regimes. The common myna (<em>Acridotheres tristis</em>) is a globally invasive passerine and is an excellent model species for research both into the persistence of low-diversity populations and the mechanisms of biological invasion. To underpin research on the invasion genetics of this species, we present the genome assembly of the common myna. We describe the genomic landscape of this species, including genome wide allelic diversity, methylation, repeats, and recombination rate, as well as an examination of gene family evolution. Finally, we use demographic analysis to identify that some native regions underwent a dramatic population increase between the two most recent periods of glaciation, and reveal artefactual impacts of genetic bottlenecks on demographic analysis.</p>
Figure 2 in First report of the genus Brachylaima Dujardin, 1843 (Trematoda: Brachylaimidae) from the small intestine of common myna (Acridotheres tristis) of district Swabi, Khyber Pakhtunkhwa, Pakistan
Figure 2. Photomicrographs of B. fuscatum (Rudolphi, 1819): a) Entire specimen. b) Fore body enlarged. c) Eggs.
Figure 4 in First report of the genus Brachylaima Dujardin, 1843 (Trematoda: Brachylaimidae) from the small intestine of common myna (Acridotheres tristis) of district Swabi, Khyber Pakhtunkhwa, Pakistan
Figure 4. Photomicrographs of B. sabahense Fischthal and Kuntz, 1974: a) Entire specimen. b) Fore body enlarged. c) Eggs.
Tracing the introduction of the invasive common myna using population genomics
<p>The common myna (<em>Acridotheres tristis</em>) is one of the most invasive bird species in the world, yet its colonisation history is only partly understood. We identified the introduction history and population structure, and quantified the genetic diversity of myna populations from the native range in India and the introduced populations in New Zealand, Australia, Fiji, Hawaii, and South Africa, based on thousands of single nucleotide polymorphism markers in 814 individuals. We were able to identify the source population of mynas in several invasive locations: mynas from Fiji and Melbourne, Australia, were likely founded by individuals from a subpopulation in Maharashtra, India, while mynas in Hawaii and South Africa were likely independently founded by individuals from other localities in India. Our findings suggest that New Zealand mynas were founded by individuals from Melbourne, which, in turn, were founded by individuals from Maharashtra. We identified two genetic clusters among New Zealand mynas, divided by New Zealand's North Island's axial mountain ranges, confirming previous observations that mountains and thick forests may form barriers to myna dispersal. Our study provides a foundation for other population and invasion genomic studies and provides useful information for the management of this invasive species.</p>
Data from: The genome of a globally invasive passerine, the common myna, Acridotheres tristis
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Tracing the introduction of the invasive common myna using population genomics
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Figure 3 in First report of the genus Brachylaima Dujardin, 1843 (Trematoda: Brachylaimidae) from the small intestine of common myna (Acridotheres tristis) of district Swabi, Khyber Pakhtunkhwa, Pakistan
Figure 3. Diagrams of B. sabahense Fischthal & Kuntz, 1974: a) Entire specimen. b) Eggs.
Figure 1 in First report of the genus Brachylaima Dujardin, 1843 (Trematoda: Brachylaimidae) from the small intestine of common myna (Acridotheres tristis) of district Swabi, Khyber Pakhtunkhwa, Pakistan
Figure 1. Diagrams of B. fuscatum (Rudolphi, 1819): a) Entire specimen. b) Eggs.
Data from: It's a trap! invasive common mynas learn socially about control-related cues
Social learning of novel threats coupled with adaptive generalization from learned to novel cues together provide the cognitive mechanisms by which adaptive avoidance of threats can spread rapidly both within and across generations. Whereas attention to effects of fishing and hunting on prey is increasing, nothing is known about how human predation can alter the behavior of invasive animals. Here, we examined whether common (Indian) mynas, Acridotheres tristis, one of the most widespread invasive birds in Australia, and invasive to many other parts of the world, are learning to respond to anthropogenic predation. We analyzed behavior at an experimental food patch provisioned by two distinctly clothed persons both before and after mynas had observed one of the two persons seemingly capture conspecifics inside a trap placed at the food patch. After the demonstration, mynas landed in smaller numbers at the food patch and took longer to land. Further, mynas alarm called more when provisioned by the person who had been involved in trapping. Future work will determine whether narrow generalization gradients are a consistent feature of synanthropic species or whether they broaden as a function of human predation threat level as is predicted by the Predator Recognition Continuum Hypothesis. Practical implications for control are discussed.
FIGURES 3–7. Brueelia chayanh Ansari, 1955. 3a in Review of the chewing louse fauna of the invasive common myna (Acridotheres tristis), with new records from Palestine and a redescription of Brueelia chayanh Ansari, 1955 (Phthiraptera, Ischnocera, Brueelia-complex)
FIGURES 3–7. Brueelia chayanh Ansari, 1955. 3a, head, dorsal and ventral views of male from India. 3b, lateral margin of preantennal head of male from Nepal, setae not shown. 4, male genitalia, dorsal view. 5, male mesosome, ventral view. 6, male paramere, dorsal view. 7, female subgenital plate and vulval margin, ventral view. Abbreviations: s4 = sensillus 4; vms = vulval marginal setae; vos = vulval oblique setae; vss = vulval submarginal setae.
FIGURES 1–2. Brueelia chayanh Ansari, 1955. 1 in Review of the chewing louse fauna of the invasive common myna (Acridotheres tristis), with new records from Palestine and a redescription of Brueelia chayanh Ansari, 1955 (Phthiraptera, Ischnocera, Brueelia-complex)
FIGURES 1–2. Brueelia chayanh Ansari, 1955. 1, male habitus, dorsal and ventral views. 2, female habitus, dorsal and ventral views. Abbreviations: aps = accessory post-spiracular setae; ps = paratergal setae; psps = principal post-spiracular setae; ss = sutural setae; tps = tergal posterior setae.
Data from: It’s a trap! invasive common mynas learn socially about control-related cues
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Data from: Tasting novel foods and selecting nutrient content in a highly successful ecological invader, the common myna
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Data from: Two speed invasion: assisted and intrinsic dispersal of common mynas over 150-years of colonization
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