Article
Fisheries
Adriana Ferreira Lima, Ana Paula Oeda Rodrigues, Vladimir Eliodoro Costa
Summary: The study demonstrated that frozen zooplankton can be used as an initial food for pirarucu juveniles feed training without negatively affecting fish growth and survival.
AQUACULTURE RESEARCH
(2021)
Article
Marine & Freshwater Biology
Dayana Tamiris Brito dos Santos Cataneo, Aline Mourao Ximenes, Carmen Rosa Garcia-Davila, Paul Andre Van Damme, Rubiani de Cassia Pagotto, Jean Ricardo Simoes Vitule, Tomas Hrbek, Izeni Pires Farias, Carolina Rodrigues da Costa Doria
Summary: The spread of non-native fish species is increasing globally, posing a threat to aquatic ecosystems. Genetic analysis of Arapaima gigas from the Madeira River revealed that the invasive population originates from Peru and was introduced through fish escapees from farms. This conservation paradox highlights the importance of understanding the origins and pathways of biological invasions.
Article
Fisheries
Antonio Marcos Jaques Ramos, Debora Machado Fracalossi, Luiz Eduardo Lima de Freitas, Viviane Rodrigues Verdolin dos Santos, Ana Paula Oeda Rodrigues
Summary: This study optimized the sedimentation method for stool collection in digestibility tests in pirarucu and found the optimal stool collection time to be 30 minutes after evacuation, with ADC stabilizing between days 8 and 10.
AQUACULTURE RESEARCH
(2022)
Article
Fisheries
Aldo Aparecido Proietti-Junior, Luciana Sampaio Lima, Emily Moraes Roges, Yan Correa Rodrigues, Karla Valeria Batista Lima, Dalia Prazeres Rodrigues, Marcos Tavares-Dias
Summary: This study reported an outbreak of disease in pirarucu caused by Aeromonas, conducted experimental co-infection research, and characterized resistance profile, virulence factors, and phenotypic and molecular differentiation. The findings support the existence of synergism between A. hydrophila and A. jandaei in pirarucu, with implications for occurrences of this co-infection and determinants of virulence.
AQUACULTURE RESEARCH
(2021)
Article
Engineering, Mechanical
Shuaijun Zhang, Pengpeng Bai, Xiangli Wen, Chengwei Wen, Hui Cao, Wanyou Yang, Yu Tian
Summary: This study investigates the relationship between the surface morphology and tribological properties of arapaima scales, revealing their unique tribological properties and their influence on protective capabilities.
Article
Fisheries
Pollyana Alves de Araujo, Patricia Oliveira Maciel-Honda, Thais de Oliveira Costa-Fernandes, Gracienhe Gomes dos Santos, Mauricio Laterca Martins
Summary: This study investigated the efficacy of sodium chloride and trichlorfon against Dawestrema cycloancistrium and its physiological effects on Arapaima gigas. The results showed that both short baths and long baths were effective in treating the infestation of Dawestrema cycloancistrium. It is recommended to use a concentration of 12 g/L sodium chloride and 5 mg/L trichlorfon for short baths.
JOURNAL OF FISH DISEASES
(2023)
Article
Fisheries
Antonio Marcos Jaques Ramos, Ana Paula Oeda Rodrigues, Luiz Eduardo Lima Freitas, Viviane Rodrigues Verdolin Santos, Bruna Mattioni, Debora Machado Fracalossi
Summary: The study found that corn and broken rice were the most digestible starch sources for juvenile pirarucu, providing the highest levels of digestible starch and energy. The digestibility of starch was inversely related to starch content and directly related to fiber content of the tested ingredients.
AQUACULTURE RESEARCH
(2022)
Article
Agriculture, Dairy & Animal Science
Xincheng Cai, Darhan Bao, Guohui Ye, Bin Chu, Zhuangsheng Tang, Rui Hua, Limin Hua
Summary: The gastrointestinal tract (GIT) morphology and histological structure of the plateau zokor (Eospalax baileyi), a subterranean herbivorous rodent in the Qinghai-Tibet Plateau, enable it to adapt to its high-fiber diet by evolving a complex stomach and well-developed gastrointestinal histology. This is in contrast to the plateau pika (Ochotona curzoniae), a small, fossorial lagomorph that forages aboveground plant parts and has a simple, wholly glandular stomach. The specialized GIT structures of the plateau zokor provide a favorable guarantee for it to adapt to the energy pressures of high-fiber digestion in harsh environments.
Article
Fisheries
An Ning Pang, Shan Nan Chen, Zhen Gan, Li Li, Nan Li, Shuai Wang, Zheng Sun, Lan Hao Liu, Yan Ling Sun, Xiao Jun Song, Yang Liu, Su Wang, P. Nie
Summary: In this study, three types of type II interferons (IFN) and four possible receptor subunits were identified in the osteoglossiform fish Arapaima gigas. These genes were constitutively expressed in all organs/tissues and responded to polyI:C stimulation. The ligand-receptor relationship of these type II IFNs and their receptors was also revealed.
DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY
(2023)
Article
Fisheries
Mohamed K. M. N. Nisin, Sreenath K. K. Ramanathan, Miriam Paul Sreeram, Deepa Sudheesan
Summary: Invasive species, such as Pirarucu, pose a serious threat to biodiversity, especially in aquatic environments. The Western Ghats, a biodiversity hotspot, is at high risk of Pirarucu invasion, particularly in the southern regions. Using a spatial model and machine learning techniques, this study found that Sri Lanka also has a significant area suitable for Pirarucu's habitat. The developed model can help prioritize locations for monitoring and management efforts to prevent further spread and protect native biodiversity.
ECOLOGY OF FRESHWATER FISH
(2023)
Article
Anatomy & Morphology
Ahmed A. El-Mansi, Eman A. El-Bealy, Ahmed M. Rady, Mohamed A. Abumandour, Dina A. El-Badry
Summary: The study investigated the digestive tract morphology of the Eurasian collared dove and its relationship with dietary niche, revealing adaptations for efficient swallowing and digestion processes. The mucosal layers of the esophagus and proventriculus contain specialized glands for secretion, while the ventriculus is lined with a keratinized membrane. The presence of pyramidal villi in the ileum indicates a high surface area for absorption, showing a close association between functional morphology and feeding style.
MICROSCOPY RESEARCH AND TECHNIQUE
(2021)
Article
Fisheries
Marcel J. M. Santos, Francisco O. Magalhaes Jr, Joao Manhaes, Itamar J. Soares Jr, Adenilson G. Silva, Ana P. Ramos, Marianne Schorer, Luis G. T. Braga
Summary: This study evaluated the effects of transport density on juvenile pirarucu. The results showed that the pirarucus were able to be transported at a density of 244 g L-1 for up to 4 hours in open systems without oxygenation, and they recovered from stress within 48 hours.
JOURNAL OF THE WORLD AQUACULTURE SOCIETY
(2022)
Article
Environmental Sciences
Maowang Jiang, Wencheng Xiao, Jingtao Ye, Liting Xu, Ruibing Peng, Qingxi Han, Zhenming Lu, Huilai Shi, Xiamin Jiang
Summary: This study investigates the changes in digestive physiology, intestinal morphology, and microbial composition during feed transition in Sepia pharaonis. The results show significant changes in digestive enzymes and microbiota, highlighting the importance of understanding these changes for aquaculture production.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Agriculture, Dairy & Animal Science
Claudia M. F. Epifanio, Thyssia B. A. da Silva, Francisco de M. Dantas, Flavio A. L. da Fonseca, Andrea Belem-Costa, Luis E. C. da Conceicao, Ligia U. Goncalves
Summary: The study aimed to determine the dietary crude protein (CP) level for maximum growth and immune resistance in pirarucu fingerlings. It was found that a protein level of approximately 618 g kg(-1) in the diet is recommended for achieving optimal weight gain and immunological resistance in pirarucu fingerlings.
TROPICAL ANIMAL HEALTH AND PRODUCTION
(2023)
Article
Multidisciplinary Sciences
Mateus C. Adolfi, Kang Du, Susanne Kneitz, Cedric Cabau, Margot Zahm, Christophe Klopp, Romain Feron, Romulo Paixao, Eduardo S. Varela, Fernanda L. de Almeida, Marcos A. de Oliveira, Rafael H. Nobrega, Celine Lopez-Roques, Carole Iampietro, Jerome Lluch, Werner Kloas, Sven Wuertz, Fabian Schaefer, Matthias Stoeck, Yann Guiguen, Manfred Schartl
Summary: The study improved the genome assembly of arapaima and identified a potential male sex-determining gene, id2bbY, which provides important insights into the sex determination mechanism of this species. The research contributes to understanding the evolution of sex determination genetic networks and offers a new tool for the development of arapaima aquaculture for commercial and conservation purposes.
SCIENTIFIC REPORTS
(2021)
