scholarly journals New record for the distribution of the colonial hydroid Cordylophora caspia (Pallas, 1771) (Cnidaria: Hydrozoa) in Argentina

Check List ◽  
2015 ◽  
Vol 11 (1) ◽  
pp. 1515
Author(s):  
Maria Irene Deserti ◽  
Alicia Haydeé Escalante ◽  
Fabián Horacio Acuña

Cordylophora caspia is a colonial, athecate hydroid inhabiting both in freshwater and brackish habitats. Its global distribution is in part due to its ability to tolerate a wide range of salinity. It is considered an invasive species and its control is widely studied because of the industrial and ecological problems it causes in many environments. We report for the first time the occurrence of this hydrozoan in Nahuel Rucá Lake (Buenos Aires province, Argentina) with some notes on its internal and external morphology.

Water ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 1769
Author(s):  
Maria Macarena Arrien ◽  
Maite M. Aldaya ◽  
Corina Iris Rodriguez

Agriculture is the largest fresh water consuming sector, and maize is the most produced and consumed crop worldwide. The water footprint (WF) methodology quantifies and evaluates the water volumes consumed and polluted by a given crop, as well as its impacts. In this work, we quantified for the first time the green WF (soil water from precipitation that is evapotranspired) and the green virtual water exports of maize from Buenos Aires province, Argentina, during 2016–2017, due to the relevance of this region in the world maize trade. Furthermore, at local level, we quantified the green, blue (evapotranspired irrigation), and grey (volume of water needed to assimilate a pollution load) WF of maize in a pilot basin. The green WF of maize in the province of Buenos Aires ranged between 170 and 730 m3/ton, with the highest values in the south following a pattern of yields. The contribution of this province in terms of green virtual water to the international maize trade reached 2213 hm3/year, allowing some water-scarce nations to ensure water and water-dependent food security and avoid further environmental impacts related to water. At the Napaleofú basin scale, the total WF of rainfed maize was 358 m3/ton (89% green and 11% grey) and 388 m3/ton (58% green, 25% blue, and 17% grey) for the irrigated crop, showing that there is not only a green WF behind the exported maize, but also a Nitrogen-related grey WF.


Check List ◽  
2016 ◽  
Vol 12 (4) ◽  
pp. 1942 ◽  
Author(s):  
Noelia S. Ferrando ◽  
María C. Claps

We provide here a checklist of species of Monogononta rotifers from lentic and lotic environments in Argentina, 25 years after the initial catalogue compiled by Susana B. José de Paggi. This new inventory now includes the reports on rotifers documented in 93 studies produced after 1990. The majority of the investigations were carried out in three of the 24 Argentine provinces. In addition, the presence of 13 species in samples from three water bodies within Buenos Aires province are now cited here for the first time in Argentina. In this updated checklist, a total of 351 species are catalogued, the majority being representatives of the Lecanidae, Brachionidae, and Lepadellidae.


Zootaxa ◽  
2019 ◽  
Vol 4624 (3) ◽  
pp. 387-396
Author(s):  
SOHAIR M. GADALLAH ◽  
MOHAMAD G. NASSER ◽  
SHAIMAA M. FARAG ◽  
MOHAMMAD O. ELHAWARY ◽  
ALAA HOSSNY

Invasive species continue to be a noteworthy risk to a wide range of biological systems and species diversity throughout the world. At present, accessible data about invasive species in Egypt are still insufficient despite the genuine danger these species pose to the Egyptian environment, economy and human well-being. The present study adds new distribution records of the invasive scutellerid species, Deroplax silphoides (Thunberg, 1783), to the Egyptian fauna. In 2008, this bug was first observed in Egypt in South Sinai, followed by Giza in 2016. Recently, hundreds of specimens were reported from Cairo in 2018. A new host plant, Chrysanthemum morifolium L. (Asteraceae), is reported for this bug. This work also provides additional information about the male and female genitalia. New characteristic features, photos, examined material, map of its world distribution, ecological and behavioral notes are also provided. Moreover, egg sculpturing of Deroplax silphoides was examined for the first time. 


Palaios ◽  
2021 ◽  
Vol 36 (3) ◽  
pp. 122-127
Author(s):  
LILIANA F. CANTIL ◽  
JORGE F. GENISE ◽  
JUAN L. FARINA ◽  
SEBASTIÁN LUPO ◽  
DARÍO PORRINI ◽  
...  

ABSTRACT The insect trace fossil Laetolichnus kwekai, which is composed of a small chamber extending to slender cylinders at each end, was tentatively included in the ichnofamily Krausichnidae as termite nests. New evidence presented here provides information to validate these inferences. A more complex structure formed by interconnected Laetolichnus was recently found in the same Pliocene deposits (Laetoli, Tanzania) as the isolated specimens reported previously. Our study confirms inclusion of Laetolichnus in Krausichnidae and supports the inference that it represents a nest of a social insect. Neoichnological field studies in the coastal dunes of Buenos Aires Province, Argentina, were undertaken to refine further the nature of these affinities. Survey of the dune surface revealed abundant loose fragments of termite nests of a size and shape comparable to that of L. kwekai. The fragile nests constructed by Onkotermes brevicorniger, which are described here in detail for the first time, enable us to interpret the fossil structures. They consist of connected chambers similar to the interconnected Laetolichnus. These were frequently exposed and broken by wind action resulting in loose fragments similar to the isolated Laetolichnus. The Celliforma ichnofacies represented at Laetoli, which contains L. kwekai, indicates arid or semiarid shrublands and woodlands. The distribution of O. brevicorniger also corresponds to arid and semiarid shrublands and dry woodlands of Argentina. Although the African termite producer of L. kwekai and the South American Onkotermes would be phylogenetically unrelated, the analogous structures probably reflect convergent nesting behaviors as an adaptation to similar arid to semiarid environmental conditions.


Zootaxa ◽  
2012 ◽  
Vol 3538 (1) ◽  
pp. 1 ◽  
Author(s):  
NESRINE AKKARI ◽  
HENRIK ENGHOFF

A comprehensive revision of the species of the genus Ommatoiulus in Andalusia, southern Spain, is carried out for thefirst time, revealing the presence of a total of 19 species, among which are one new record for the country, one for con-tinental Spain, two new records for Andalusia and 10 species new to science: Ommatoiulus baenai, O. baileyi, O. hoff-mani, O. jaenensis, O. kimei, O. pseudoflagellatus, O. recueroi, O. reipi, O. sabinarensis, O. schubarti n.spp. Thefollowing taxa are synonymised: Schizophyllum hoplites Verhoeff, 1910, S. diplurum appendiculatum Brolemann,1925, and Ommatoiulus diplurus mauriesi Hoffman, 1975, are regarded as junior synonyms of Ommatoiulus diplurus(Attems, 1903), n.syn. Schizophyllum dorsovittatum estrellanum Verhoeff, 1910, and S. calatravanum Brolemann,1920, are junior synonyms of Ommatoiulus dorsovittatus (Verhoeff, 1893), n.syn. Schizophyllum nivale Schubart,1959, is a junior synonym of Omnmatoiulus ilicis (Brölemann, 1896), n.syn. Full descriptions and diagnostic notes areprovided for all the species with accounts on their distributions, habitats, and notes discussing their taxonomy. A di-chotomous identification key, based on gonopod structures, is presented to facilitate species identification. In the dis-cussion section, the general patterns of species distribution are underlined, showing a clear tendency to ‘endemism’ forthe majority of species and to polymorphism for species with broader distribution ranges, especially O. diplurus. A dis-junct distribution Andalusia/Pyrenees is registered for O. ilicis. A comprehensive comparison of gonopods is attempt-ed, and three main types of gonopod configuration are delimited, denoting a wide range of structural complexity. Thefovea, a cavity in the posterior gonopods, is explored for the first time with scanning electron microscopy, revealing anagglutination of spermatozoa and confirming Verhoeff’s original observation dating back nearly 120 years. The con-stancy of the fovea in all Schizophyllini, combined with its absence in the rest of the julids, provides an additional apomorphy for the tribe.


Zootaxa ◽  
2018 ◽  
Vol 4531 (4) ◽  
pp. 589 ◽  
Author(s):  
ULZIIJARGAL BAYARSAIKHAN ◽  
KAROL BUCSEK ◽  
YANG-SEOP BAE

The genus Hergovitsia Bucsek (2012) is reported for the first time in Cambodia, for the new species, Hergovitsia longivirga n. sp. A diagnostic comparison is made with Hergovitsia magnifica Bucsek, 2012. Illustrations of adults and genitalia of the new and all known species are provided, with a key to the genus Hergovitsia on the basis of the external morphology and male genitalia. 


Zootaxa ◽  
2010 ◽  
Vol 2575 (1) ◽  
pp. 1 ◽  
Author(s):  
PABLO RICARDO MULIERI ◽  
JUAN CARLOS MARILUIS ◽  
LUCIANO DAMIÁN PATITUCCI

Thirty-nine species of Sarcophaginae are recorded from Buenos Aires Province (Argentina). A new species, Microcerella asymmetrica sp. nov., is described. Females of Oxysarcodexia bicolor Lopes, O. marina Hall, and Sarcophaga (Lipoptilocnema) koehleri Blanchard are described for the first time. Four nomenclatorial actions are reported: Sarcohelicobia elegans Blanchard is established as a new junior synonym of Nephochaetopteryx cyaneiventris Lopes, and lectotypes are designated for Oxysarcodexia delpontei Blanchard [a junior synonym of Oxysarcodexia paulistanensis (Mattos)], Sarcophaga argentina Brèthes [a junior synonym of Sarcophaga (Liopygia) argyrostoma (Robineau-Desvoidy)], and Neobellieria brethesi Blanchard [a junior synonym of Sarcophaga (Neobellieria) polistensis Hall]. Blaesoxipha (Tephromyia) hospes (Aldrich), Peckia (Euboettcheria) florencioi (Prado & Fonseca), Ravinia advena (Walker), R. aureopyga (Hall) and Sarcodexia lambens (Wiedemann) are newly recorded from Buenos Aires Province, and Udamopyga percita is newly recorded from Argentina. A key is presented to the adult males and females of 36 of the 39 species of Sarcophaginae recorded from Buenos Aires province. Notes on distribution, biology, life history and host records are also given.


Zootaxa ◽  
2020 ◽  
Vol 4780 (1) ◽  
pp. 107-131
Author(s):  
KEVIN A. RUCCI ◽  
BIRGER NEUHAUS ◽  
VERÓNICA N. BULNES ◽  
NÉSTOR J. CAZZANIGA

Samples collected from Monte Hermoso, Buenos Aires Province, Argentina revealed the presence of specimens of the genus Franciscideres Dal Zotto et al., 2013, previously known only from Brazil. This morphotype seems to differ from the only known species, Franciscideres kalenesos Dal Zotto et al., 2013, in the following characters: (1) presence of ventrolateral tubes on segment 1, (2) introvert features, (3) each segment composed of a closed cuticular ring, (4) trunk cuticle ornamented by a secondary fringe of knob-like structures, (5) posterior margin of segment 10 ventrally terminating in two lateral and one broad triangular lobes, (6) posterior margin of segment 11 centrally terminating in four lobes (7) lateral terminal spines armed with thorn-like processes, (8) pores/sensory spots/gland cells distribution and (9) sexual dimorphism in segments 10 and 11. Because of the lack of full information about F. kalenesos from Brazil, we consider the new exemplars as Franciscideres cf. kalenesos. Additionally, we provide new information about the movement of this species using light microscopy and we compare these movements with those of other meiofaunal inhabitants. 


2020 ◽  
Author(s):  
Nicolas Malumian

Abstract This recent case is a leading case relating to local trusts and forced heirship. Forced heirship is a restriction to the liberty to write a will and determine the destiny of his/her future estate by the testator. It can be found in all South America (not in Latin America from Panama to México) and in most Civil Law countries in Europe, besides similar restrictions under sharia law. The way to avoid these restrictions has been the creation of a foreign trust over foreign assets. Although authors have long analyzed whether a local trust allows the avoidance of local forced heirship rules over local assets, there has been no case law in this respect (at least since the inclusion of the trust in Argentine law in 1995). In short, this is the first time a local trust over local assets has been under the scrutiny of the courts to determine if there is a violation of forced heirship.


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