The northern river shrimp Cryphiops caementarius (Decapoda, Palaemonidae). Research chronology between 1958 and 2008, I: distribution, population status, biology and life cycle

Crustaceana ◽  
2013 ◽  
Vol 86 (12) ◽  
pp. 1441-1451 ◽  
Author(s):  
Maria C. Morales ◽  
Jaime Meruane
Keyword(s):  
Life Cycle ◽  
Embryonic Development ◽  
Technological Development ◽  
Natural Habitat ◽  
Andes Mountains ◽  
Controlled Environment ◽  
Northern Chile ◽  
Population Status ◽  
The Andes ◽  
Northern River

The present study is a review of the main inland water malacostracan species of northern Chile: Cryphiops caementarius (Molina, 1782). This species sustains the local fisheries in northern and central Chilean hydrographical basins. Cryphiops caementarius, in Chile known as the northern river shrimp, is endemic to rivers west of the Andes Mountains in Peru, and south from Chancay-Lambayeque River and the rivers in the northern Chilean littoral up to 32°55′S. Research on this species in its natural habitat consigned between 1958 to 2008 was directed to population knowledge, including mainly the existing populations in rivers in the Regions of Atacama and Coquimbo. Important advances were also made with regards to the study of the embryonic development, biology, life cycle and reproduction that serve as a basis for the technological development of juvenile production in a controlled environment.

Revision of the Solanum medians Complex (Solanum section Petota)

2008 ◽  
Vol 33 (3) ◽  
pp. 579-588 ◽  
Author(s):  
David M. Spooner ◽  
Diego Fajardo ◽  
Alberto Salas
Keyword(s):  
Andes Mountains ◽  
Morphometric Study ◽  
Herbarium Specimens ◽  
Wild Potato ◽  
Northern Chile ◽  
Closely Related Species ◽  
The Andes ◽  
Morphological Variants ◽  
Solanum Section Petota ◽  
Section Petota

Solanum medians is a widely distributed species of wild potato (Solanum sect. Petota), growing along the coastal lomas and up the western slopes of the Andes Mountains from central Peru and northern Chile, from 200–3800 m elevation. Fertile diploid and sterile triploid cytotypes are common, are believed to be associated with morphological variants, and are formally named as subspecies. A morphometric study based on principal components and canonical discriminate analyses of characters obtained from herbarium specimens tests the circumscription of these subspecies and other currently recognized species that are very similar to S. medians. The results show so much overlap of these taxa that it is impractical to use morphology to define species or to provide reliable keys or identifications. We synonymize ten names under S. medians: S. medians var. angustifoliolum, S. medians var. majorifrons subvar. majorifrons, S. medians var. majorifrons subvar. protohypoleucum, S. medians var. autumnale, S. sandemannii, S. tacnaense, S. weberbaueri var. decurrentialatum, S. tacnaense f. decurrentialatum, S. weberbaueri, S. weberbaueri var. poscoanum. We also treat S. neoweberbaueri as a closely related species to S. medians. We consider the synonymy in S. medians to be part of a much larger need for reduction of names in sect. Petota.

The northern river shrimp Cryphiops caementarius (Decapoda, Palaemonidae), research chronology between 1958 and 2008, II: aquaculture research and development in northern Chile

Crustaceana ◽  
2013 ◽  
Vol 86 (12) ◽  
pp. 1452-1467
Author(s):  
Maria C. Morales ◽  
Jaime Meruane
Keyword(s):  
Research And Development ◽  
Production Technology ◽  
Ovigerous Female ◽  
Natural Habitat ◽  
Natural Populations ◽  
Northern Chile ◽  
Natural Habitats ◽  
Research Staff ◽  
Northern River ◽  
Aquaculture Production

In Chile many experiments to artificially produce juvenile Cryphiops caementarius have been carried out in order to obtain enough stock for aquaculture or repopulation in natural habitats. The aquaculture production technology has been developed by the research staff of the Aquaculture Department of the Universidad Católica del Norte, with the aim of enhancing cultivation at commercial level, obtaining a sustainable production, and decreasing the fisheries pressure on natural populations. The latter is now based on the collection of ovigerous female obtained from their natural habitat. The research shows that it is possible to cultivate C. caementarius juveniles in 65 days through 18 zoeal stages.

scholarly journals Life Cycle Assessment and Material Flow Analysis: Two Under-Utilized Tools for Informing E-Waste Management

2021 ◽  
Vol 13 (14) ◽  
pp. 7939
Author(s):  
Sohani Vihanga Withanage ◽  
Komal Habib
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Material Flow ◽  
Keyword Search ◽  
Technological Development ◽  
Flow Analysis ◽  
Material Flow Analysis ◽  
Civil Society Organizations ◽  
The Past ◽  
Depth Analysis

The unprecedented technological development and economic growth over the past two decades has resulted in streams of rapidly growing electronic waste (e-waste) around the world. As the potential source of secondary raw materials including precious and critical materials, e-waste has recently gained significant attention across the board, ranging from governments and industry, to academia and civil society organizations. This paper aims to provide a comprehensive review of the last decade of e-waste literature followed by an in-depth analysis of the application of material flow analysis (MFA) and life cycle assessment (LCA), i.e., two less commonly used strategic tools to guide the relevant stakeholders in efficient management of e-waste. Through a keyword search on two main online search databases, Scopus and Web of Science, 1835 peer-reviewed publications were selected and subjected to a bibliographic network analysis to identify and visualize major research themes across the selected literature. The selected 1835 studies were classified into ten different categories based on research area, such as environmental and human health impacts, recycling and recovery technologies, associated social aspects, etc. With this selected literature in mind, the review process revealed the two least explored research areas over the past decade: MFA and LCA with 33 and 31 studies, respectively. A further in-depth analysis was conducted for these two areas regarding their application to various systems with numerous scopes and different stages of e-waste life cycle. The study provides a detailed discussion regarding their applicability, and highlights challenges and opportunities for further research.

Population biology of the unusual thermoconforming lizards of the Andes Mountains of Peru (Squamata: Gymnophthalmidae)

2021 ◽  
Author(s):  
Tiffany M. Doan ◽  
Sara A. Sheffer ◽  
Nicholas R. Warmington ◽  
Eliot E. Evans
Keyword(s):  
Population Biology ◽  
Andes Mountains ◽  
The Andes

scholarly journals Nausithoe aurea n. sp. (Scyphozoa: Coronatae: Nausithoidae), a species with two pathways of reproduction after strobilation: sexual and asexual

1997 ◽  
Vol 66 (4) ◽  
pp. 235-246 ◽  
Author(s):  
Fábio Lang da Silveira ◽  
André Carrara Morandini
Keyword(s):  
New Species ◽  
Life Cycle ◽  
Embryonic Development ◽  
Yellow Pigment ◽  
Early Embryonic Development ◽  
Paulo State ◽  
Polyp Stage ◽  
Submarine Cave ◽  
A New Species ◽  
Medusa Stage

Nausithoe aurea, a new species of scyphozoan Coronatae, is described from São Paulo State, Brazil. The solitary scyphistomae, with some zooxanthellae, strobilated producing planuloids and medusae; this represents an intermediate life cycle between that of metagenetic Nausithoidae and the submarine cave-dwelling, reduced medusa stage of Nausithoe planulophora (Werner, 1971). The periderm tube of the scyphistomae has 16 internal cusps in all whorls. The medusae present yellow pigment spots in most of their lappets. The early embryonic development is briefly described. Planuloid formation is hypothesized as explanation for polyp-stage philopatry.

10. Mercury Biomagnification in the Food Web of Tropical Andean Stream

2017 ◽  
Author(s):  
Sae Yun Kwon
Keyword(s):  
Food Web ◽  
Gold Mining ◽  
Nitrogen Isotope ◽  
Andes Mountains ◽  
Reproductive Capacity ◽  
The Andes ◽  
Fish Mucus ◽  
13C Isotopes ◽  
Natural Emission ◽  
Aquatic Food

Increasing release of mercury (Hg) through gold amalgamation, and deforestation have been major concerns in South America. Volcanic sources have also contributed to the natural emission of Hg from the Andes Mountains. Hg not only exhibits biomagnification through aquatic food webs, but it is also neurotoxic and impacts the reproductive capacity of fish. Many studies have assessed Hg biomagnification from areas of gold mining and erosion, but ours is one of the first to examine Hg contamination in a relatively undisturbed area. We used stable nitrogen () and carbon (13C) isotopes to characterize the food web of Río Las Marías, Venezuela, and examine Hg biomagnification trends. Representative fish species from Río Las Marías were collected during January‐February 2004, including detritivores, herbivores, invertivores, parasites, piscivores, and carnivores. Nitrogen isotope results indicate that parasitic catfish (Ochmancanthus alternus) ( = 12.2‰), carnivorous stingrays (Potamotrygon orbignyi) ( =11.4‰) and piscivorous redeye piranhas (Serrasalmus rhombeus) ( =10.9‰) act as top consumers in the web. Detritivorous characins (Steindachnerina argentae) (=6.8‰), and invertivorous knifefish (Apteronotus albifrons) ( =7.9‰) were located at the bottom of the food web. Although the highest value was observed from Ochmancanthus alternus due to its unusual diet of fish mucus, we predict that piscivorous species will exhibit higher Hg concentrations by consuming the muscle tissue where Hg is stored. Our assessment of Hg patterns in Río Las Marías will clarify the extent of Hg contamination in undisturbed areas, and will offer a valuable comparison to rivers that are influenced by gold mining activities.3

Black carbon transport between Santiago de Chile and glaciers in the Andes Mountains

2020 ◽  
Vol 232 ◽  
pp. 117546 ◽  
Author(s):  
Ernesto Gramsch ◽  
Alicia Muñoz ◽  
Joakim Langner ◽  
Luis Morales ◽  
Cristian Soto ◽  
...  
Keyword(s):  
Black Carbon ◽  
Andes Mountains ◽  
Santiago De Chile ◽  
The Andes ◽  
Carbon Transport
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