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Registros recuperados: 17 | |
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Mann, Florian; Szczerbowski, Daiane; De Silva, Lisa; Mcclure, Melanie; Elias, Marianne; Schulz, Stefan. |
Male ithomiine butterflies (Nymphalidae: Danainae) have hairpencils on the forewings (i.e. androconia) that disseminate semiochemicals during courtship. While most ithomiines are known to contain derivatives of pyrrolizidine alkaloids, dihydropyrrolizines or g-lactones in these androconia, here we report on a new class of fatty acid esters identified in two subspecies, Ithomia salapia aquinia and I. s. derasa. The major components were identified as isoprenyl (3-methyl-3-butenyl) (Z)-3-acetyloxy-11-octadecenoate, isoprenyl (Z)-3-acetyloxy-13-octadecenoate (12) and isoprenyl 3-acetyloxyoctadecanoate (11) by GC/MS- and GC/IR-analyses, microderivatizations, and synthesis of representative compounds. The absolute configuration of 12 was determined to be R. The... |
Tipo: Text |
Palavras-chave: Fatty acid esters; Mass spectrometry; Mimicry; Pheromones; Pyrrolizidine alkaloids. |
Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00643/75512/76362.pdf |
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Francini,Ronaldo Bastos; Penz,Carla M.. |
In certain times of the year, Actinote butterflies can be vastly abundant in Southeastern Brazil, thus representing conspicuous denizens of our fauna. Their wing coloration allows for the recognition of five major patterns, which probably resulted from mimicry. Furthermore, examination of series of field-collected and reared specimens clearly demonstrates a high intra-specific variation in wing color pattern. In concert, inter-specific resemblance (mimicry) and intra-specific variation make it difficult to discriminate Actinote species from each other. This key aims at providing a tool for identification of male Actinote. To that effect, we provide diagnostic characters and illustrations of wings and male genitalia for 22 species. We hope that the clear... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Butterfly; Identification; Genitalia; Mimicry. |
Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032006000100013 |
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García Franco, José Luis. |
Phalaris minor Retz. (“alpistillo”) es considerada como una maleza importante en el cultivo de trigo en la región del Bajío Mexicano, que ha desarrollado resistencia a herbicidas inhibidores de la Acetil Coenzima A Carboxilasa (ACCasa). Se ha consignado que más de la mitad de la población de Phalaris spp. comúnmente escapa del control manual a causa de la similitud morfológica con el cultivo de trigo. El objetivo de la presente investigación fue determinar si existen diferencias morfológicas y fenológicas entre biotipos resistentes y susceptible de P. minor a los herbicidas, y cultivares de trigo. Se realizaron experimentos en Montecillo, México en condición de no competencia. Se emplearon cuatro biotipos de alpistillo resistentes y uno susceptible,... |
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Palavras-chave: Graminicidas; Mimetismo; Caracterización morfológica; Trigo; Graminicides; Morphological characterization; Wheat; Botánica; Maestría; Mimicry. |
Ano: 2013 |
URL: http://hdl.handle.net/10521/1873 |
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Dell'Aglio,Denise Dalbosco; Toma,Tiago Shizen Pacheco; Muelbert,Adriane Esquivel; Sacco,Anne Gomes; Tozetti,Alexandro Marques. |
Anti-predator mechanisms in snakes are diverse and complex, including mimetic behavior. Some snakes triangulate their head, probably mimicking other more dangerous snakes. However, there is a lack of studies that demonstrate the effectiveness of this behavior with natural predators. The aim of this study was to verify, using artificial snakes, if snakes with triangular heads are less susceptible to attack by predators, and if predatory attack is targeted to the head of serpents. Artificial snakes were systematically arranged on a road border. The rate of attacked models was 48.71%. Number of attacks on models with rounded head was significantly higher than in models with triangular head. There was a significant difference between the places of attack on... |
Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Artificial models; Defensive behavior; Mimicry; Predation rate; Reptiles. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000300031 |
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Poduschka, Walter. |
In a comparison of basic reproductive variables (number of teats, litter size, and duration of pregnancy) in the Madagascan Tenrecinae, some striking features (hyperthelia, litter size) are observed in Tenrec ecaudatus Lacépède, 1799 and the genus Hemicentetes Mivart, 1871. These variations are compared to Setifer setosus Froriep, 1806 and Echinops telfairi Martin, 1838. Tenrec ecaudatus gives birth to litters at intervals shorter than what was once believed to be the duration of pregnancy. This could be due either to superfetation, or to giving birth to one litter in two or more installments. The longitudinal stripe pattern of the genus Hemicentetes is interpreted as a mimicry of the sympatric, equally striped, juvenile Tenrec ecaudatus. The latter... |
Tipo: Article / Letter to the editor |
Palavras-chave: Insectivora; Tenrecidae; Hyperthelia; Reproduction; Litter size; Pregnancy; Mimicry. |
Ano: 1996 |
URL: http://www.repository.naturalis.nl/record/504596 |
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Bessa,Eduardo; Carvalho,Lucélia Nobre; Sabino,José; Tomazzelli,Paola. |
In the district of Bom Jardim, in Nobres, Mato Grosso State, Brazil, there are clear water streams originating on karstic terrain. The dourado, Salminus brasiliensis, is an apex stalking predator in these streams. In clear waters, where visually oriented prey may perceive predator in advance, surprise is needed for successful attacks. These streams are cohabited by other Characiformes, like the frugivorous piraputanga Brycon hilarii, which lives in schools and exhibits body colour and shape similar to the dourados. Here we describe an alternative predatory tactic for juvenile dourado occurring in headwater streams of the Paraguay River basin, in which they act as an aggressive mimic of the piraputanga. Based on 43 h of observations in Bom Jardim, and on... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Characid; Feeding behavior; Mimicry; Underwater observations. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000200012 |
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Marinho,Manoela M. F.; Birindelli,José L. O.. |
Astyanax multidensis redescribed based on syntypes and additional specimens from the rio Amazonas at Silves, Amazonas State and Óbidos, Pará State, and the rios Trombetas, Tapajós, Xingú, and Araguaia.Astyanax multidensis distinguished from congeners by the unique combination of five to seven maxillary teeth, 31 to 34 pored lateral-line scales, 20 to 23 branched anal-fin rays, and a dark triangular blotch restricted to the middle caudal-fin rays. Astyanax multidens was collected syntopically with Jupiaba paranatinga in the rio Tapajós basin and with Jupiabacf. essequibensis in the rio Xingu basin, which have paired anteriorly oriented pelvic-fin spines, a antipredatory mechanism. Based on the external morphological similarity betweenAstyanax multidens and... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Jupiaba; Mimicry; Neotropical; Taxonomy. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000100045 |
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França,Frederico Gustavo Rodrigues; Braz,Vívian da Silva; Araújo,Alexandre Fernandes Bamberg de. |
Abstract Mimicry is an excellent example of how natural selection can act on color, morphology, and behavior of species. Herein we assess predation rates on coral snake mimics in Central Brazil, a region with many mimics but only a single model, to answer the following questions: (i) Do predators avoid attacking coral snake mimics? (ii) Does the degree to which mimics resemble their venomous model affect the frequency of predator attacks? (iii) Do predators attack different body regions in mimics with different color patterns? Our experiment was conducted in the Chapada dos Veadeiros National Park, in the municipality of Alto Paraíso de Goiás, state of Goiás, Brazil. To evaluate predation rates on the different mimic patterns, we made 2,400 clay snake... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mimicry; Coral snake; Central Brazil; Predation. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300206 |
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Vardy, C.R.. |
In this Part, 37 species of the genus, belonging to eight species-groups, are described and figured, and their phylogenetics and biogeography are discussed. Seven of the species are described as new: P. ecuadorae, friburgensis, marthae, onorei, pulawskii, riopretensis, yucatani. One species-name, P. tolteca Lucas, 1895, is recalled from synonymy and one name, P. lycaon Banks, 1945, is upgraded from varietal to species status. The following 49 names are newly synonymized (valid names first): P. grossa (Fabricius, 1798) = P. formosus Say, 1823, P. affinis Dahlbom, 1845, P. obliquerugosa Lucas, 1895, P. nephele Lucas, 1895, P. theresiae Kriechbaumer, 1900, P. colombica Brèthes, 1926, P. pattoni Banks, 1945, P. pellita Haupt, 1952; P. aquila Lucas, 1895 = P.... |
Tipo: Article / Letter to the editor |
Palavras-chave: Spider-hunting wasps; Pompilidae; Pepsis; Systematic revision; New species; Mimicry; Neotropical; Natural history; 42.75. |
Ano: 2002 |
URL: http://www.repository.naturalis.nl/record/220200 |
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Vardy, C.R.. |
In this part the remaining 78 species of the genus Pepsis, belonging to ten species-groups, are described and figured, and their phylogenetics and biogeography are discussed. 14 of the species are described as new: P. achterbergi spec. nov., P. adonta spec. nov., P. boharti spec. nov., P. caliente spec. nov., P. dayi spec. nov., P. esmeralda spec. nov., P. ianthoides spec. nov., P. jamaicensis spec. nov., P. krombeini spec. nov., P. martini spec. nov., P. multichroma spec. nov., P. nanoides spec. nov., P. wahisi spec. nov., and P. willinki spec. nov. Three species-names, P. infuscata Spinola, 1841, P. lampas Lucas, 1895, and P. thoreyi Dahlbom, 1845, are recalled from synonymy. The following 293 names are newly synonymized (the valid names are listed... |
Tipo: Article / Letter to the editor |
Palavras-chave: Spider-hunting wasps; Pompilidae; Pepsis; Systematic revision; New species; Mimicry; Neotropical; Natural history; 42.75. |
Ano: 2005 |
URL: http://www.repository.naturalis.nl/record/210789 |
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Registros recuperados: 17 | |
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