Results 41 to 50 of about 477 (110)

Freshwater snails and schistosomiasis mansoni in the State of Rio de Janeiro, Brazil: I - metropolitan mesoregion

Memorias do Instituto Oswaldo Cruz, 2001
In order to elaborate a planorbid chart of the State of Rio de Janeiro a survey of freshwater gastropods in the Metropolitan Mesoregion of this State was performed and revealed the occurrence of 20 species: Antillorbis nordestensis (Lucena, 1954 ...
Thiengo Silvana C, Fernandez Monica A, Boaventura M Fernanda, Grault Carlos E, Silva Heucler FR, Mattos Aline C, Santos Sonia B   +6 more
doaj  

Freshwater snails and schistosomiasis mansoni in the state of Rio de Janeiro, Brazil: VI - Noroeste Fluminense Mesoregion

Memorias do Instituto Oswaldo Cruz, 2006
In this paper, the last of a series dealing with the survey of freshwater gastropods of the state of Rio de Janeiro, the results of collections carried out in the Noroeste Fluminense Mesoregion from 2002 to 2005 are presented and revealed the occurrence ...
Silvana C Thiengo, Aline C Mattos, Sonia B Santos, Monica A Fernandez   +3 more
doaj   +1 more source

Structural similarities reveal an expansive conotoxin family with a two‐finger toxin fold

Protein Science, Volume 34, Issue 11, November 2025.
Abstract Venomous animals have evolved a diverse repertoire of toxins with considerable pharmaceutical potential. The rapid evolution of peptide toxins, such as the conotoxins produced by venomous marine cone snails, often complicates efforts to infer their evolutionary relationships based solely on sequence information.
Muhammad Saad Khilji, Celeste M. Hackney, Thomas L. Koch, Arik J. Hone, Aymeric Rogalski, Maren Watkins, Jortan Tun, J. Michael McIntosh, Baldomero Olivera, Helena Safavi‐Hemami, Kaare Teilum, Lars Ellgaard   +11 more
wiley   +1 more source

Freshwater snails and schistosomiasis mansoni in the state of Rio de Janeiro, Brazil: V - Norte fluminense mesoregion

Memorias do Instituto Oswaldo Cruz, 2004
In this paper, the fifth of a series dealing with the survey of freshwater gastropods of the state of Rio de Janeiro, the results of collections carried out in the Norte Fluminense Mesoregion from 2002 to 2003 are presented and revealed the occurrence of
Silvana C Thiengo, Aline C Mattos, M Fernanda Boaventura, Márcio S Loureiro, Sonia B Santos, Monica A Fernandez   +5 more
doaj   +1 more source

Urban Ponds and the Emerging Role of Garden Ponds: Ecosystem Services and Disservices, Multifunctionality, and Trade‐Offs

WIREs Water, Volume 12, Issue 6, November/December 2025.
Urban ponds and garden ponds—a specific subset of the former, usually located in private gardens—are both typical examples of ponds in the urban landscape. They deliver multiple ecosystem services but can also contribute to ecosystem disservices. The role of garden ponds is largely unknown compared to other urban ponds.
Zsófia Horváth, Márton Uhrin, David Cunillera‐Montcusí, Barbara Barta, Beáta Szabó, Andrew J. Hamer, Zsuzsanna Márton, Thu‐Hương Huỳnh, Bence Buttyán, Csaba F. Vad   +9 more
wiley   +1 more source

Comparative Genomics of Sex‐Determination‐Related Genes Reveals Shared Evolutionary Patterns Between Bivalves and Mammals, but Not Fruit Flies

Molecular Ecology, Volume 34, Issue 20, October 2025.
ABSTRACT The molecular basis of sex determination (SD), while being extensively studied in model organisms, remains poorly understood in many animal groups. Bivalves, a diverse class of molluscs with a variety of reproductive modes, represent an ideal yet challenging clade for investigating SD and the evolution of sexual systems.
Filippo Nicolini, Sergey V Nuzhdin, Fabrizio Ghiselli, Andrea Luchetti, Liliana Milani   +4 more
wiley   +1 more source

Short communication: Estimating radiocarbon reservoir effects in Bolivian Amazon freshwater lakes [PDF]

Geochronology
The Llanos de Moxos, in the Bolivian Amazon, preserves a remarkable archaeological record, featuring thousands of forest islands. These anthropogenic sites emerged as a result of activities of the earliest inhabitants of Amazonia during the Early and ...
A. García-Escárzaga, A. García-Escárzaga, A. García-Escárzaga, U. Lombardo, U. Lombardo, P. M. Bello-Alonso, J. M. Capriles, A. Colonese, A. Colonese, K. Dudgeon, C. D. Simões, R. Fernandes, R. Fernandes, R. Fernandes   +13 more
doaj   +1 more source

Harnessing Environmental DNA to Explore Frugivorous Interactions: A Case Study in Papaya (Carica papaya) and Pineapple (Ananas comosus)

Environmental DNA, Volume 7, Issue 5, September–October 2025.
Simplified workflow of environmental DNA metabarcoding from fruits of papaya (Carica papaya) and pineapple (Ananas comosus). ABSTRACT Plant–animal interactions (PAIs) are critical in natural and agricultural ecosystems, mediating energy flow with both positive and negative interactions.
Pritam Banerjee, Jyoti Prakash Maity, Nalonda Chatterjee, Sven Weber, Gobinda Dey, Raju Kumar Sharma, Chien‐Yen Chen   +6 more
wiley   +1 more source

Radular ultrastructure of South American Ampullariidae (Gastropoda: Prosobranchia)

Brazilian Journal of Biology
The radula of five species of South American Ampullariidae was analysed by Scanning Electron Microscope (SEM) with the purpose of enlarging new studies on the systematic of this family.
SM Martín, LHL Negrete
doaj   +1 more source

Monitoring population extinction risk with community science data

Journal of Applied Ecology, Volume 62, Issue 9, Page 2133-2147, September 2025.
Our modelling framework provides a robust, computationally efficient and easy‐to‐apply tool for monitoring local persistence probability that can support global conservation efforts. This will complement the monitoring of species population viability in places where standardized monitoring is still lacking, but community science observations are common.
Orlando Acevedo‐Charry, José M. Ponciano, Caroline L. Poli, Brian M. Jeffery, Robert J. Fletcher Jr., María Ángela Echeverry‐Galvis, Bette A. Loiselle, Scott K. Robinson, Miguel A. Acevedo   +8 more
wiley   +1 more source