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Exclusion of tourist species from assemblages in ecological studies:a methodological approach using spiders

Ecological Processes 2022年第1期11卷 825-844页

作者： María Florencia Nadal Alda González Gilberto Avalos Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET) Buenos AiresArgentina laboratorio de Biología de los artrópodos Facultad de Ciencias Exactas y Naturales y AgrimensuraUniversidad Nacional del NordesteAvenida Libertad 54703400 CorrientesArgentina Centro de Estudios Parasitológicos y de Vectores(CEPAVE-UNLP) Boulevard 120 s/n(e/60-64)1900 La PlataArgentina

Background:The exclusion of tourist species from samples is important to avoid bias in community ***,in practice,this is a very difficult *** commonly used methods by researchers,when the habitat of the species is not known,have several shortcomings:first,they exclude not only pseudo-rare species but also genuinely rare species;second,the results obtained with those methods depend on the abundance of the sampling;and third,they follow very subjective *** aims of this study were:(i)to propose a methodology to detect and exclude habitat-tourist species from the database used to carry out analyses in community ecology studies,(ii)to evaluate how the presence of habitat-tourist species affects the richness estimates,and(iii)to assess the effect of including juvenile spiders in the detection of tourist species and the effect of removing them from the richness ***:When the adult+juvenile dataset was considered,twenty-one habitat-tourist species were detected:8 in forest foliage,11 in forest leaf litter,and 2 in *** habitat-tourist species were considered with this dataset,richness overestimation was significant in foliage and in leaf litter,and the final slopes of the richness estimation curves were significantly steeper in leaf *** only the adult dataset was considered,eight habitat-tourist species were detected:3 in forest foliage,4 in forest leaf litter,and just one in *** inclusion of habitat-tourist species in this dataset showed an overestimation of richness,but this was not ***:The proposed methodology contributes to solving the problem of tourist species,which was recognized as one of the great problems in biodiversity *** study showed that common estimators overestimate species richness when habitat-tourist species are included,leading to erroneous ***,this research showed that the inclusion of juveniles(***)could improve the analysis outputs be

关键词： Pseudo-rare species Richness estimation Indicator value Habitat

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Morphometrics confirms the conspecific between Blaptica dubia(Serville) and B. interior Hebard(Blattodea:Blaberidae)

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Zoological Systematics 2019年第2期44卷 111-122页

作者： María Marta González Alejandra del Carmen Valverde Mónica Sandra Iglesias Francisco Antonio Crespo laboratorio de artrópodos Departamento de Biodiversidad y Biología Experimental Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires Pabellón Ⅱ Ciudad Universitaria Centro de diagnóstico e investigación en endemo-epidemias. Administración nacional de laboratorios e institutos de salud "Dr. Carlos G. Malbrán"

Blaptica dubia(Serville, 1838) and B. interior Hebard, 1921 were considered to be cryptic species. The characteristics originally proposed for their identification are not *** the relationship between the two species should be re-considered. As a comparative approach and to analyze intraspecific variability, morphological and morphometric methods were performed. Traditional and new characters such as wing shape and pronotum contour were utilized. We found significant differences between both species(p dentification of species neither with the male genitalia or the pronotal *** on the obtained results, B. interior Hebard 1921 is considered to be a junior synonym of B. dubia(Serville, 1838).

关键词： Cockroaches pronotum genitalia geometric morphometric analysis synonymy

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Olfactory response of Anastrepha striata （Diptera： Tephritidae） to guava and sweet orange volatiles

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Insect Science 2016年第5期23卷 720-727页

作者： Edvin Diaz-Santiz, Julio C. Rojas Leopoldo Cruz-Lopez Emilio Hernandez Edi A. Malo Grupo de Ecologia de artr6podos y Manejo de plagas El Colegio de la Frontera Sur (ECOSUR) Carretera Antiguo Aeropuerto km 2.5 Tapachula Chiapas CP 30700 programa Moscafrut SAGARPA-IICA Subdirecci6n de Desarrollo de M6todos Camino a los Cacahotales SIN Metapa de Dominguez Chiapas CP 30860 Mexico

The behavioral responses of virgin and mated female Anastrepha striata Schiner （Diptera： Tephritidae） to guava （Psidium guajava L.） or sweet orange （Citrus sinensis L.） were evaluated separately using multilure traps in two-choice tests in field cages. The results showed that flies were more attracted to guava and sweet orange volatiles than to control （unbaited trap）. The physiological state （virgin or mated） of females did not affect their attraction to the fruit volatiles. Combined analysis of gas chromatography coupled with electroantennography （GC-EAD） of volatile extracts of both fruits showed that 1 and 6 compounds from orange and guava, respectively elicited repeatable antennal responses from mated females. The EAD active compounds in guava volatile extracts were identified by gas chromatography-mass spectrometry （GC-MS） as ethyl butyrate, （Z）-3-hexenol, hexanol, ethyl hexanoate, hexyl acetate, and ethyl octanoate. Linalool was identified as the only antennal active compound in sweet orange extracts. In field cage tests, there were no significant differences between the number of mated flies captured by the traps baited with guava extracts and the number caught by traps baited with the 6-component blend that was formulated according to the relative proportions in the guava extracts. Similar results occurred when synthetic linalool was evaluated against orange extracts. From a practical point of view, the compounds identified in this study could be used for monitoring A. striata populations.

关键词： Anastrepha striata attraction GC-EAD GC-MS guava and sweet orangevolatiles multilure traps

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A new species of Friesea(Collembola:Neanuridae) from Hebei Province, North China and a cladistic analysis

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Entomotaxonomia 2019年第4期41卷 243-257页

作者： Yun BU Jose GPALACIOS-VARGAS Angela ARANGO Natural History Research Center Shanghai Natural History MuseumShanghai Science&Technology MuseumShanghai 200041China laboratorio de Ecologia y Sistematica de Microartropodos Departamento de BiologiaFacultad de CienciasUniversidad Nacional Autonoma de Mexico04510Mexico

Friesea incognita sp. nov. is described from China. This new species is characterized by the combination of: 2 + 2 eyes, no capitate tenent hairs on tibiotarsi, three anal spines, furcula without mucro and dens with 3 setae. Total dorsal and ventral chaetotaxy of the new species is given. A revised key for identification of the species of this genus with 2 + 2 eyes is given. Forty-seven characters of antennal sensilla, eyes and body chaetotaxy are chosen for the cladistic analysis performed for 18 species of this genus, including 12 with 2+2 eyes. Results indicate the new species F. incognita seems to be related to F. nauimetztli from Mexico. The phylogenetic relationships of the species are not well resolved due to the presence of many homoplasies among different species that adapt to a similar soil habitat.

关键词： springtails chaetotaxy eye furcula cladistic analysis taxonomy

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