Results 31 to 40 of about 950,037 (232)

Signatures of convergence in Neotropical cichlid fish

Molecular Ecology
AbstractConvergent evolution of similar phenotypes suggests some predictability in the evolutionary trajectories of organisms, due to strong and repeated selective pressures, and/or developmental constraints. In adaptive radiations, particularly in cichlid fish radiations, convergent phenotypes are commonly found within and across geographical settings.
Mariana Leal‐Cardín, Seraina E. Bracamonte, Javier Aldegunde, Isabel S. Magalhaes, Claudia Patricia Ornelas‐García, Marta Barluenga   +5 more
openaire   +4 more sources

Whole Black Soldier Fly Larvae (Hermetia illucens) as Dietary Replacement of Extruded Feed for Tambaqui (Colossoma macropomum) Juveniles

Aquaculture Journal, 2022
The black soldier fly (BSF, Hermetia illucens) is a prominent insect species and a novel alternative ingredient for aquafeeds. This study aimed to evaluate the replacement of commercial feed with fresh whole black soldier fly larvae (BSFL) for Colossoma ...
Betselene M. Ordoñez, Thiago M. Santana, Davison P. Carneiro, Driely K. M. dos Santos, Gustavo A. P. Parra, Luis C. C. Moreno, Nelson P. Teixeira Filho, Fredy A. A. Aguilar, Fernando Y. Yamamoto, Ligia U. Gonçalves   +9 more
doaj   +1 more source

MicroCT reinvestigation of the only articulated fossil anostomid fish reveals synonymy of Arhinolemur Ameghino, 1898 and Megaleporinus Ramirez et al., 2017

The Anatomical Record, EarlyView.
Abstract Arhinolemur scalabrinii† Ameghino, 1898 was originally described as a strepsirrhine primate (Mammalia) but has been recognized as an anostomid fish since 2012. It remains the only extinct anostomid species known from complete cranial material.
Karen M. Panzeri, Humberto L. Andrelino, Sergio Bogan, José P. O'Gorman, Federico Agnolín, Brian L. Sidlauskas, Nahuel Vega, Agustín G. Martinelli, José L. Birindelli   +8 more
wiley   +1 more source

Revision of Bryconamericus (Characiformes, Characidae) from Pacific coastal and Amazon River drainages with descriptions of three new species

Revista de Investigaciones Universidad del Quindío, 2023
We report the results of a taxonomic revision of the species of Bryconamericus from the Amazon River Basin of Peru, Ecuador, Bolivia and the Pacific coastal rivers of Peru.
Cesar Román-Valencia, Raquel I. Ruiz - C. , Donald C. Taphorn   +2 more
doaj   +1 more source

Developmental morphology of claspers and clasper‐glands during maturation in Potamotrygon wallacei (Chondrichthyes: Potamotrygoninae)

The Anatomical Record, EarlyView.
Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga, Grazyelle Sebrenski da Silva, Maria Inês Braga de Oliveira, Jaydione Luiz Marcon, Ruben Dario Morales Gamba   +4 more
wiley   +1 more source

Contribution of conservation genetics in assessing neotropical freshwater fish biodiversity

Brazilian Journal of Biology
Human activities have a considerable impact on hydrographic systems and fish fauna. The present review on conservation genetics of neotropical freshwater fish reveals that DNA analyses have been promoting increased knowledge on the genetic structure of ...
NM. Piorski, A. Sanches, LF. Carvalho-Costa, T. Hatanaka, M. Carrillo-Avila, PD. Freitas, PM. Galetti Jr.   +6 more
doaj   +1 more source

Stress and immune system in fish

, 2019
The chapter presents the current knowledge about the organization and mechanisms of stress response in fish, and explores the factors that modulate the immune system during this response.
Zanuzzo, Fábio Sabbadin [UNESP], Urbinati, Elisabeth Criscuolo [UNESP], Biller, Jaqueline Dalbello [UNESP]   +2 more
core   +1 more source

Comparative analysis of cytoarchitectonic and neurochemical aspects of the globus pallidus in the rock cavy (Kerodon rupestris) and the common marmoset (Callithrix jacchus)

The Anatomical Record, EarlyView.
Abstract The globus pallidus (GP), a subcortical structure within the basal ganglia, plays a crucial role in modulating cortico‐subcortical circuits related to motor control and associative/limbic functions. However, the cytoarchitectonic and neurochemical organization of this structure remains poorly characterized in naturally existing wild‐type ...
Lavínnya Yáskara de Aquino Matoso, Yasmin Pinto Fernandes Albuquerque, Karina Maia Paiva, Rodrigo Freire Oliveira, Nelyane Nayara Martins de Santana, Expedito Silva do Nascimento‐Júnior, Rovena Clara G. J. Engelberth, Jeferson de Souza Cavalcante, Adhil Bhagwandin, Paulo Leonardo Araújo de Góis Morais, José Rodolfo Lopes de Paiva Cavalcanti   +10 more
wiley   +1 more source

Preface: How far has Neotropical Ichthyology progressed in twenty years?

Neotropical Ichthyology, 2018
Studies on the diversity, taxonomy, phylogeny, and biogeography of Neotropical Fishes have thrived over the twenty years that have elapsed since the first symposium on their phylogeny and classification in Porto Alegre, Brazil.
José L. O. Birindelli, Brian L. Sidlauskas   +1 more
doaj   +1 more source

Evidence for adaptive explanations of semelparity in animals

Biological Reviews, EarlyView.
ABSTRACT Semelparity, the reproductive strategy of reproducing once, is widespread but uncommon in animals. Classes of models to explain the evolution of semelparity are based either on age structure and mortality schedules – demographic models in which high post‐reproductive mortality risk favours high reproductive effort and semelparity results from ...
Diana O. Fisher, Roberto Salguero‐Gómez   +1 more
wiley   +1 more source