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1.
Zootaxa ; 4686(2): zootaxa.4686.2.1, 2019 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-31719486

RESUMO

Here we provide a checklist of millipedes described or recorded in the literature from Venezuela. The diplopod fauna is comprised of eight orders, 18 families, 54 genera, and 157 species. The millipede orders Glomerida, Chordeumatida, Julida, Siphoniulida, and Platydesmida (known elsewhere in the Western Hemisphere) are not, as of yet, reported from the Venezuelan fauna. Two widely distributed invasive species, Asiomorpha coarctata and Oxidus gracilis, were recorded from Venezuela. All species records listed here contain comprehensive citation and synonymy lists. Numerous locality data are questionable and are discussed. For most species, the supposed deposition of the type specimens is given. However, the museum and gender information is taken mostly from the literature as the type specimen themselves were not examined. An analysis of records extracted from GBIF in 2016 and in 2018 was conducted and compared to the data captured from the published taxonomic literature. The data in this checklist are summarized online at the MilliBase website.


Assuntos
Artrópodes , Distribuição Animal , Animais , Espécies Introduzidas , Venezuela
2.
Artigo em Inglês | LILACS-Express | VETINDEX | ID: biblio-1483313

RESUMO

RESUMEN Proponemos aquí la transferencia de Metaphareus punctatus Roewer, 1913, al género Eutimesius Roewer, 1913 (Heterostygninae), fundamentándonos en la morfología genital de la especie y morfología de los tarsos III y IV, resultando en la nueva combinación Eutimesius punctatus (Roewer, 1913), comb. nov. Nuevos registros geográficos para E. albicinctus (Roewer, 1915) son ofrecidos, registrando la simpatría entre las especies congenéricas E. albicinctus y E. punctatus y se presentan datos sobre el comportamiento reproductivo de E. punctatus, sugiriéndose la existencia de cuidado parental en esta especie.


ABSTRACT We herein propose the transfer of Metaphareus punctatus Roewer, 1913, to the genus Eutimesius Roewer, 1913 (Heterostygninae) based on the genital morphology of the species and morphology of tarsi III and IV, resulting in the new combination Eutimesius punctatus (Roewer, 1913), comb. nov. New geographical records for E. albicinctus (Roewer, 1915) are offered, recording sympatry between the congeneric species E. albicinctus and E. punctatus and data on the reproductive behavior of E. punctatus are presented, suggesting the existence of parental care in this species.

3.
Rev. cient. (Maracaibo) ; Rev. cient. (Maracaibo);20(4): 353-361, jul. 2010. ilus, graf, tab
Artigo em Espanhol | LILACS | ID: lil-631080

RESUMO

En el presente estudio se analizó el desarrollo intrauterino de los fetos de ratas Wistar, que recibieron una inyección por vía intraperitoneal de 2x10(5) tripomastigotes sanguícolas de las cepas Planalto (IP1) y ASM (IP2) de Trypanosoma cruzi. A los 12 días post-infección fueron apareadas; a los 20 días de preñez fueron sacrificadas y los fetos fueron extraídos de los sacos uterinos para ser evaluados. Ratas sanas preñadas (SP) y vírgenes (CI1, CI2) fueron usadas como controles. Los resultados indican que la parasitemia fue significativamente (P<0,05) mayor en las ratas preñadas en comparación con las ratas vírgenes CI1 y CI2 infectadas con diferentes cepas de T. cruzi. En las ratas IP1 se observaron 19 fetos con peso y longitud promedio de 2,86 ± 2,19 g y 2,63 ± 1,17; en una de las ratas se desarrolló un solo feto en el cuerno uterino izquierdo, en otra rata se observó inflamación del cuerno izquierdo, restos fetales, placentales y 6 fetos de aspecto normal en el cuerno derecho; en dos ratas se desarrollaron 8 y 4 fetos, respectivamente, de aspecto normal. En las ratas preñadas IP2, se desarrollaron 28 fetos con peso y longitud promedio de 2,77 ± 0,77 g y 3,31 ± 1,99 cm; en una rata los 4 fetos (57,14%) del cuerno uterino derecho presentaron malformaciones morfológicas sobre el lado dorsal del cuerpo, estrechamiento alrededor de la parte posterior y gran desarrollo de la base de la pata anterior derecha y en el cuerno izquierdo se observaron 3 fetos con aspecto normal; en otra rata se encontraron 2 fetos muertos y denso líquido amniótico en el cuerno uterino derecho y 5 fetos con aspecto normal en el cuerno izquierdo, y en dos ratas se observaron 8 y 6 fetos con aspecto normal, respectivamente. En las SP se desarrollaron 21 fetos con características físicas normales, con peso y longitud promedio de 6,16 ± 0,99 g y 2,88 ± 0,65 cm de longitud. La relación peso fetal/longitud fetal (g/cm) en los grupos de ratas preñadas IP1 e IP2 fue significantemente menor en comparación con los fetos de las ratas SP (P<0,00001). La comparación del peso fetal y diámetro de las placentas entre las ratas IP1, IP2 y SP resultó significativa (P<0,001). En conclusión, la infección por diferentes cepas de T. cruzi en las ratas preñadas produce restricción patológica del crecimiento fetal, anomalías morfológicas estructurales y funcionales en los fetos y muerte fetal. Los fetos de las ratas SP no mostraron ningun anomalía.


In the present study was analyzed the intrauterine development of Wistar rats fetuses that received an injection of 2x10(5) bloodstream trypomastigotes of Planalto (IP1) and ASM (IP2) Trypanosoma cruzi strains. The rats with 12 days post-infection were mated; at day 20 the pregnat rats were sacrificed and its fetuses were extracted from the uterine horns in order to be evaluated. Healthy pregnant rats (HP) and virgin rats (CI1, CI2) were used as controls. The results showed that parasitemia was significanty (P<0.05) higher in pregnancy rats in comparison with the virgins rats CI1 and CI2 infected with different T. cruzi strains. The rats IP1, showed 19 fetuses with weight and measure average of 2.86 g ± 2.19 and 2.63 ± 1.17 cm of length. One rat showed 1 fetus in the left uterine horn, other rat showed the left uterine horn with inflammated aspect and with fetal and placental rests, and 6 fetuses of normal aspect into right uterine horn; in two rats were observed 8 and 4 fetuses of normal aspect. The pregnant rats IP2, developed 28 fetuses with weight and measure average of 2.77 ± 0.77 g and 3.31 ± 1.99 cm; in one rat, the 4 fetuses (57.14%) of right uterine horn presented morphological malformations on the dorsal side of the body, tightness around the body and development his anterior right footpad with big size and the left uterine horn of same rat was observed 3 fetuses with normal aspect; other rat showed 2 fetuses dead and dense amniotic liquid into right horn, and 5 fetuses with normal aspect in the left uterine horn, in two rats were developed 8 and 6 fetuses with normal aspect respectively. The HP development 21 fetuses with normal aspect of weight and measure average of 6.16 ± 0.99 g and 2.88 ± 0.65 cm of length. The relation weight/length fetal (g/cm) in infected pregnant rats groups IP1 and IP2 was significantly less in comparison with fetuses of HP rats (P<0.00001). The comparison of the fetal weight and placental diameters of IP1, IP2 and HP rats were significant (P<0.001). In conclusion, acute infection with different T. cruzi strains in pregnant rats, produces pathologic restriction of fetal growth, functional structural morphological anomalies in the fetuses and death of some fetuses. The fetuses of HP rats did not show any anomaly.

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