Abstract: The gordiids are freshwater representatives of the parasite phylum Nematomorpha that function as a link between aquatic and terrestrial ecosystems. In recent years, different ecotoxicologic studies have been made with the South-A
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Abstract: The gordiids are freshwater representatives of the parasite phylum Nematomorpha that function as a link between aquatic and terrestrial ecosystems. In recent years, different ecotoxicologic studies have been made with the South-A
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Abstract: Phyllonoma laticuspis leaves are used in Carrizal de Bravo, Guerrero, Mexico, to heal skin lesions such as injuries and smallpox sequelae and to treat diabetes mellitus type 2, and organic extracts of these leaves have been reported to exert antibacterial
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Abstract: se of Leersia hexandra (Poaceae) for soil phytoremediation in soils contaminated with fresh and weathered oil . The oil industry has generated chronic oil spills and their accumulation in wetlands of the state of Tabasco, in Southeastern Mexi
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Abstract: In Mexico there are 29 species of Amnestus , of which six species are from Veracruz. The morphological features and illustrations of immature stages of A. rugosus are presented. Notes about the biology and behavior were included. The nympha
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Abstract: The tropical dry forest (BTS) of Yucatan Peninsula has been managed for centuries, but the relationship between these management efforts and their effects on trees diversity has not been fully understood. The aim of this study was to ev
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Abstract: Anuran embryos and tadpoles are daily exposed to wide thermal variations in their ponds, with maxi - mum temperatures at midday. The aim of this research was to study the impact of three daily variable thermal environments (with maximum experimental temp
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Abstract: The pink shrimp, Farfantepenaeus duorarum is an important commercial species in the Gulf of Mexico, which supports significant commercial fisheries near Dry Tortugas, in Southern Florida and in Campeche Sound, Southern Gulf of Mexico. There
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Abstract: Some species of marine fish have complex relationships with coastal eco - systems during their reproductive periods, as the needle fish Tylosurus pacificus that forms spawning aggre - gations in gravel beaches in Utría Park. We
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Abstract: The genus Bathypterois (tripod fish) comprises 19 species of deep-sea fishes distributed worldwide. The biology and distribution of the species of this genus are relatively poorly known throughout the Eastern Central Pacific (ECP). Thi
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Abstract: Igarapés are Amazonian streams that are extremely susceptible to environmental changes. Due to the rapidly occurring riparian land use changes, and the several impacts these may have on fish assemblages, it is highly valuable to describe and understand
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Abstract: The first lionfish sighting at the National Park “Cayos de San Felipe” was in 2009 and could be a threat to its marine ecosystem diversity and their capacity to generate services. To analyze the incidence of the lionfish invasion in the area, an annual
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Abstract: The polychaete fauna of the Caribbean coast of Costa Rica has been inadequately characterized with only nine species previously reported. Collections of polychaetes from intertidal coralline rocks and several shal - low sub-tidal sites on the Caribbean coast
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Abstract: Endemic populations of Hechtia perotensis have been described in Puebla and Veracruz, Mexico. Good quality seed collections can be used in conservation, research and ecological restoration. To evaluate seed quality of wild and endemic species, some compo
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Abstract: The scyphomedusae feed mainly on micro - scopic crustaceans, eggs and fish larvae, molluscs and some other jellyfishes. The distribution and abundance of the scyphomedusae has an economic and ecological impact as they are predators that have an influenc
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Abstract: Snooks C. undecimalis and C. ensiferus are important fishery resources in their distribution area. In Venezuela they are caught by artisanal fisheries along the entire coast. However, studies on their biology that would help e
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Abstract: Ornamental fisheries are economically viable activities in developing countries due to the fact that aquaria have become a worldwide hobby. In Mexico, the fishery has been conducted since the 1980s, especially in the Baja California Peninsula, but nevert
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Abstract: C. acutus is cataloged in critical danger in Colombia. We studied its population at Bahia Portete, in order to survey the nesting activities and to obtain valuable information for a conservation management program. This st
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Abstract: Parasites play a crucial role in the ecology of animals. They also appear to be important in mecha - nisms underlying sexual selection processes. In this article we study the prevalence, effect and potential role in sexual selection of the protozoon Trypano
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Abstract: Pseudocurimata lineopunctata rep - resents an important nutritional source for local human communities in Colombia and Ecuador. Although the yearly catch of this fish is low (590 kg/year), there are no restrictions on minimum
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Abstract: Puntius shalynius is a highly endemic freshwater minor carp that is economically important and is threatened because of its ornamental value. The present investigation evaluated this barb gonadal maturation, based on morpholo
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Abstract: Predators can influence a variety of prey traits, including behavior. Traits such as boldness, activity rate, and tendency to explore can all be shaped by predation risk. Our study examines the effects of predation on these behaviors by considering a natura
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Abstract: Deforestation in Amazon forests is one of the main causes for biodiversity loss worldwide. Ants are key into the ecosystem because act like engineers; hence, the loss of ants’ biodiversity may be a guide to measure the loss of essential fun
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Abstract: In fish reproduction, previous information of ovary oocyte distribution is necessary, when oocytes quantitative estimates are required to estimate batch or annual fecundity. Heterogeneous oocyte distribution requires a standardiz
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Abstract: The Ceratozamia norstogii complex from Southern Mexico is made up of four closely related taxa and occurs in similar habitats ( Quercus forest). All have linear-lanceolate leaflets with great similarity between them, especially in juvenile stages, but di
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Abstract: The ecological condition of tropical Andean rivers are threatened by many human activities including changes in land use and cover in watersheds. Current protocols diagnose the structural condition of streams but not their function. In this study we propose
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Abstract: Bimodal polyestry is the most common reproductive pattern in tropical bats, and it consists in producing one offspring per female twice a year. Reproductive patterns are closely related to rainfall regimes, frequently occurring twice a year i
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Abstract: The assessment of the preclinical neutralizing ability of antivenoms in Latin America is necessary to determine their scope of efficacy . This study was aimed at analyzing the neutralizing efficacy of a polyspecific bothropic-crotalic antivenom manufacture
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Abstract: The Cuban archipelago has 79 Phyllophaga species with a 98.6 % of endemism, which makes the group eco - logically and economically important, as some species are classified as crop pests. The aim of this study was to determine the relatio
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Abstract: Freshwater crab, Sodhiana iranica , is an endemic gecarcinucid crab that has been recently reported from Southern Iran. This research examined some reproductive aspects of S. iranica from Eelood freshwater spring, Southern Iran. Crabs were
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Abstract: Previous work has highlighted the critical role of macroalgal productivity and dynamics in support - ing and structuring marine food webs. Spatio-temporal variability in macroalgae can alter coastal ecosystems, a relationship particularly visible along upwel
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Abstract: Mining is one of the main economic activities in many tropical regions and is the cause of devastation of large areas of natural tropical forests. The knowledge of the regenerative potential of mining disturbed areas provides valuable information for their
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Abstract: The permanent monoculture of bananas and plantains farming in the middle of Río Grande (Turbo - Antioquia) requires the application of a variety of pesticides. Inappropriate banana production practices in this region, have often led to wate
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