Article
Fisheries
Yuqin Su, Xuange Liu, Huadong Yi, Sheng Bi, Xiaoli Chen, Han Lai, Shuang Liu, Zeyu Zeng, Qiuxian Chen, Guifeng Li
Summary: The study investigated the effects of starvation and refeeding on the growth, physiology, and intestine structure of Hippocampus erectus. Starvation led to a decrease in total protein content, changes in enzyme activity, and alterations in intestinal structure, while refeeding helped partially restore these changes. Overall, the study provided valuable insights into the starvation physiology of seahorses and its implications for aquaculture.
Article
Ecology
Heather D. Mason, Emily Rose, Jessica Elson Gonzalez, Duncan A. O'Brien
Summary: Although the nighttime ecology of organisms remains understudied, nocturnal surveys play a vital role in evaluating fish assemblages and the selective forces affecting them. A study in Eleuthera, Bahamas, found significantly higher densities of seahorses during nocturnal surveys compared to daytime transects. The surveys also revealed differences in sex ratios and reproductive categories between day and night. The detection of spatial and seasonal recruitment, as well as the increase in nocturnal population size, have important implications for the understanding and conservation of this vulnerable species.
ECOLOGY AND EVOLUTION
(2023)
Article
Multidisciplinary Sciences
Anna Karolina Martins Borges, Romulo Romeu Nobrega Alves, Tacyana Pereira Ribeiro Oliveira
Summary: To design seahorse conservation strategies, we conducted a study on the distribution and habitat preferences of longsnout seahorses in a mangrove estuary in Brazil. The study found that dense mangrove cover and shallow depths were predictors of seahorse sightings and higher densities. Seahorses also exhibited a preference for mangrove structures as holdfasts. Therefore, protecting these ecosystems is crucial for the conservation and management of H. reidi in estuaries.
Article
Virology
Fan Zhang, Zhihao Ren, Xiaomeng Guo, Yiting Wang, Fanzeng Meng, Weifeng Shi, Xinping Wang, Xuan Dong
Summary: Three novel RNA viruses and one nervous necrosis virus were identified in lined seahorse through meta-transcriptomic sequencing. The diversity and cross-species transmission of viruses pose a threat to this species.
Article
Fisheries
Xiaohui Bai, Shuang Hao, Jianping Fu, Hanchang Sun, Zhang Luo
Summary: The lined seahorse, an aquacultural species in China, is of economic and ornamental value. However, it suffers from a disease that hinders its large-scale cultivation. In 2021, a disease outbreak with a 20% cumulative mortality rate was observed in cultured seahorses in Tianjin, China. The pathogen responsible for the disease was identified as Mycobacterium chelonae, and this is the first report of its association with diseased seahorses in China.
Article
Entomology
Marian M. Rodriguez-Soto, Douglas S. Richmond, Ricardo A. Ramirez, Xi Xiong, Laramy S. Enders
Summary: Billbugs (Sphenophorus spp.) are a complex of grass-feeding weevil species that cause damage to turfgrass. A study combining DNA barcoding methods and morphometric measures has helped improve understanding of billbug seasonal biology and will aid in the development of better turfgrass pest management programs.
Article
Multidisciplinary Sciences
Diego Luzzatto, Victor Cussac
Summary: This study aimed to develop a non-invasive and efficient method for measuring and identifying individual seahorses in their natural habitat. Through capturing and photographing seahorses to obtain measurements and individual recognition, the study identified growth patterns and behaviors related to seahorse sizes.
SCIENTIFIC REPORTS
(2023)
Article
Environmental Sciences
Davide Spatafora, Michele Gristina, Federico Quattrocchi, Cataldo Pierri, Tamara Lazic, Jorge Palma
Summary: In the face of future ocean warming and habitat fragmentation, coastal fishes, including seahorses, need to adjust their physiological and behavioral traits. This study investigated the behavior of two sympatric seahorse species and found that seahorses have behavioral tolerance to temperature variation. However, increased density of one species and habitat availability can affect the behavior of the other species, potentially impacting their distribution in shallow habitats.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Entomology
Bruno Leite Rodrigues, Glaucilene da Silva Costa, Rodrigo Espindola Godoy, Antonio Marques Pereira Junior, Wilsandrei Cella, Gabriel Eduardo Melim Ferreira, Jansen Fernandes de Medeiros, Paloma Helena Fernandes Shimabukuro
Summary: In this study, the molecular and morphometric differences of several populations of the sand fly vector Psychodopygus davisi in Brazil were analysed. The analysis revealed high genetic diversity and potential candidate species within P. davisi populations. Additionally, wing analysis showed differences between P. davisi populations in the Southeast Region compared to the North and Midwest regions.
MEDICAL AND VETERINARY ENTOMOLOGY
(2023)
Article
Fisheries
Natalie Villar Freret-Meurer, Amanda do Carmo Vaccani, Gabriela dos Santos Cabiro
Summary: Intersex conditions were found in wild populations of gonochoristic fish, with seahorses in Brazil showing possible feminization and a case of brood pouch reduction after reproductive stimuli. The female seahorses exhibited two types of morphological anomalies, with consistent proportion of affected individuals in the study population unrelated to sex ratio. The study suggests changes in the sexual profile of individuals.
JOURNAL OF FISH BIOLOGY
(2021)
Article
Plant Sciences
Antonio Giaco, Paola De Giorgi, Giovanni Astuti, Paolo Caputo, Miguel Serrano, Rodrigo Carballal, Llorenc Saez, Gianluigi Bacchetta, Lorenzo Peruzzi
Summary: This study provides a morphometric characterization and comparison of 14 species within the Santolina chamaecyparissus complex, suggesting that species can be distinguished mainly based on leaf morphology. It also concludes that the two cytotypes of S. villosa should not be split into distinct taxa based on morphology alone.
Article
Plant Sciences
Andre V. F. Faria, Nuno T. Martins, Ligia M. Ayres-Ostrock, Carlos F. D. Gurgel, Estela M. Plastino
Summary: This study investigated the population genetic diversity and structure of Gracilariopsis tenuifrons in Brazil, revealing a significant genetic separation between the northeast and southeast regions, which are located near the Vitoria-Trindade seamount chain, suggesting it as the main biogeographical barrier to gene flow.
JOURNAL OF PHYCOLOGY
(2023)
Article
Fisheries
Xuange Liu, Gongpei Wang, Jiahui Chen, Sheng Bi, Chenlei Huang, Han Lai, Huadong Yi, Haiyang Li, Qiuxian Chen, Li Lin, Zhilun Zhang, Xuchong Wei, Yong Zhang, Guifeng Li
Summary: Syngnathid fishes have a unique reproductive system, and injecting a mixture of HCG and LHRH-A3 into the brood pouch can accelerate reproductive interactions, promote physiological changes, and up-regulate gene expression.
Article
Agriculture, Dairy & Animal Science
Mario D. D. Carneiro, Sergio Garcia-Mesa, Luis A. Sampaio, Miquel Planas
Summary: This study investigated the effects of acidification and different salinity conditions on the growth and fitness of seahorse. The results showed that seahorse juveniles reared in seawater under acidic conditions had better overall performance and fitness compared to those reared in brackish water.
Article
Fisheries
Xin Liu, Dong Zhang, Tingting Lin, Siping Li
Summary: The present study found that rearing low-quality juveniles of the lined seahorse in green water or under lower light intensities (200-500 lx) can improve their survival and growth. Overall, juveniles in green water had better survival rates and growth compared to those in clear water. Similarly, low light intensity (200-500 lx) also significantly improved the survival and growth of low-quality juvenile seahorses.
AQUACULTURE REPORTS
(2023)
Article
Public, Environmental & Occupational Health
V. S. Santos, T. S. Siqueira, J. R. S. Silva, R. Q. Gurgel
Summary: This study aimed to investigate the spatial clusters of high and low COVID-19 vaccination rates among children and adolescents across Brazilian municipalities and their relationship to social determinants of health. The study used nationwide population-based ecological analysis to identify fluctuations in vaccination rates and spatial clusters. The lowest vaccination rates were found in municipalities with higher socio-economic disparities and social vulnerability, especially in the North and Northeast regions.
Review
Biochemistry & Molecular Biology
Natalia Lima Lira, Sandro Tonello, Roberto Laridondo Lui, Josiane Baccarin Traldi, Heleno Brandao, Claudio Oliveira, Daniel Rodrigues Blanco
Summary: Studies on fish eggs and larvae have been conducted since the late 19th century and have provided important information for understanding fish fauna and environmental inventory. The use of molecular identification techniques, particularly DNA barcoding, has greatly improved taxonomic precision in studying ichthyoplankton. Recent research shows a significant increase in the use of DNA barcoding, with high accuracy compared to traditional taxonomic identification methods.
MOLECULAR BIOLOGY REPORTS
(2023)
Article
Veterinary Sciences
Lorena Elizabeth Chalco-Torres, Ana Elizabeth Guerrero-Lopez, Robert Gustavo Sanchez-Prado, Jhonny Edgar Perez, Claudio Oliveira, Juan Antonio Gomez, Fernando Lenin-Aguilar, Mauro Nirchio-Tursellino
Summary: The bond between dogs and humans is a complex and multidimensional phenomenon that poses a public health problem. A study conducted in Apizaco, Tlaxcala, Mexico found that there is a problem with handling dog excreta, which can lead to zoonosis. Dogs without guardians were more likely to be parasitized by Toxocara canis and Ancylostoma caninum, while dogs with guardians and access to public roads were more likely to be infected with T. canis and A. caninum. It highlights the need for a comprehensive public health program promoting responsible dog ownership.
REVISTA CIENTIFICA-FACULTAD DE CIENCIAS VETERINARIAS
(2023)
Article
Genetics & Heredity
Mauro Nirchio, Claudio Oliveira, Marcelo de Bello Cioffi, Franciscode Menezes Cavalcante Sassi, Jonathan Valdiviezo, Fabilene Gomes Paim, Leticia Batista Soares, Anna Rita Rossi
Summary: This study provides the first cytogenetic description of the bristlenose catfish, Ancistrus clementinae Rendahl, 1937, a species endemic to Ecuador. The study confirms the presence of a male ZZ/female ZW(1)W(2) sex chromosome system in Ancistrus, with both W1W2 chromosomes enriched with heterochromatic blocks and 18S rDNA, in addition to GC-rich repeats (W-2).
Article
Medicine, General & Internal
Daniel Lima Menezes, Carlos Thailan de Jesus Santos, Yvanna Louise Di Christine Oliveira, Vinicius Torres Castro Campos, Deborah Aparecida Negrao-Correa, Stefan Michael Geiger, Jose Rodrigo Santos Silva, Sona Jain, Luciana Maria Oliveira, Ricardo Toshio Fujiwara, Carlos Graeff-Teixeira, Silvio Santana Dolabella
Summary: Schistosomiasis is a neglected tropical disease mainly found in Brazil, where Kato-Katz (KK) thick smear is the recommended screening test. However, KK has limitations in sensitivity. Helmintex (HTX), a magnetic-based method, showed superior performance compared to KK in a moderate endemic area in northeastern Brazil. This study confirms the potential role of HTX in defining true-positive samples and certifying transmission interruption of schistosomiasis.
Article
Zoology
George M. T. Mattox, Ralf Britz, Camila S. Souza, Andre L. S. Casas, Flavio C. T. Lima, Claudio Oliveira
Summary: Two new species of the genus Priocharax are described from the Rio Jurua system in Brazil, bringing the total known species diversity to seven. These species can be distinguished from each other and from their congeners by a combination of morphological and genetic characteristics. Unfortunately, the localities where these species were found are facing significant degradation, posing a threat to their conservation status.
CANADIAN JOURNAL OF ZOOLOGY
(2023)
Article
Fisheries
Jefferson L. Crispim-Rodrigues, Maxwell J. Bernt, Brandon T. Waltz, Gabriel S. C. Silva, Ricardo C. Benine, Claudio Oliveira, Raphael Covain, Fabio F. Roxo
Summary: During a recent collection expedition in the Rio Negro, Brazil, eight individuals of an unknown species were discovered, which were classified as a new species in the genus Rhadinoloricaria based on their combination of characteristics, including elongated papillae on the lower lip and unbranched barbelets on the margin of the lower lip. Morphological and phylogenetic analyses, along with osteological computed tomography scans, confirmed that these specimens represent a new species of Rhadinoloricaria.
JOURNAL OF FISH BIOLOGY
(2023)
Article
Zoology
Henrique R. Varella, Sven O. Kullander, Naercio A. Menezes, Claudio Oliveira, Hernan Lopez-Fernandez
Summary: This study proposes a new classification for pike cichlids, elevating the clade to the rank of subtribe (Crenicichlina) and redefining the genus Crenicichla. Teleocichla is maintained as a valid genus, while four new genera are proposed. The results also suggest that resource partitioning in environments with fast-flowing water and rocky beds may have played a role in the evolution of pike cichlids.
ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
(2023)
Article
Biodiversity Conservation
Vanessa P. P. Cruz, Matheus M. M. Rotundo, Patricia Charvet, Beatriz R. R. Boza, Bruno C. C. Souza, Najila N. C. D. Cerqueira, Claudio Oliveira, Rosangela Lessa, Fausto Foresti
Summary: Anthropogenic activities, such as overexploitation and habitat degradation, have caused significant population declines in marine species, particularly rays and sharks. This study focused on the genetic diversity of chola guitarfish (Pseudobatos percellens) along the Brazilian coast using single nucleotide polymorphisms (SNPs). Genetic analyses revealed hidden biodiversity within P. percellens, with distinct lineages occurring in different regions of Brazil. Management efforts should be tailored to these separate populations to ensure the conservation of chola guitarfish biodiversity. Additionally, further taxonomic research is needed for this group.
Article
Biochemistry & Molecular Biology
Myrela C. S. de Jesus, Marcelo Cerilo-Filho, Aina D. R. Ramirez, Rubens A. O. Menezes, Margarete S. M. Gomes, Gustavo C. Cassiano, Ricardo Q. Gurgel, Jose R. S. Silva, Tatiana R. Moura, Lilian R. Pratt-Riccio, Andrea R. S. Baptista, Luciane M. Storti-Melo, Ricardo L. D. Machado
Summary: This study aimed to describe the allelic and genotypic frequency of four polymorphisms in the trem-1 gene in Plasmodium vivax-infected patients and to verify their association with clinical and immunological factors. The study found that these SNPs in the trem-1 gene are associated with effector molecules of the innate immunity, and may be essential for the establishment of immunization strategies against malaria.
Article
Genetics & Heredity
Mauro Nirchio Tursellino, Marcelo de Bello Cioffi, Francisco de Menezes Cavalcante Sassi, Geize Aparecida Deon, Claudio Oliveira, Mariana Kuranaka, Jonathan Valdiviezo-Rivera, Victor Hugo Gonzalez, Anna Rita Rossi
Summary: In this study, cytogenetic investigation on the Transancistrus santarosensis fish reveals a karyotype of 2n = 54 chromosomes, indicating an early stage of differentiation of the ZZ/ZW sex chromosome system. The fish has also accumulated heterochromatin and shows non-syntenic ribosomal genes localization, characteristics considered derived in the family.
Article
Microbiology
Nathalia Faria Reis, Myrela Conceicao Santos de Jesus, Lais Cavalcanti dos Santos Velasco de Souza, Lucas Martins Alcantara, Julia Andrade de Castro Rodrigues, Simone Cristina Pereira Brito, Patricia de Azambuja Penna, Cecilia Stahl Vieira, Jose Rodrigo Santos Silva, Bruno de Araujo Penna, Ricardo Luiz Dantas Machado, Hector M. Mora-Montes, Andrea Regina de Souza Baptista
Summary: This study investigated the immune response of G. mellonella during S. brasiliensis infection and found that the fungal load and hemocyte density increased with deleterious morphological events and larvae mortality. The expression of Gallerimycin, C7 Contig 15362, and C8 Contig 19101 genes were positively regulated at different time points of infection, showing a time-dependent and alternately modulated profile. Galiomycin gene expression remained unchanged.
Article
Fisheries
Aisni M. C. L. Adachi, Pollyana C. G. Roque, Fabio H. V. Hazin, Marcelo Vianna, Matheus M. Rotundo, Claudio Oliveira, Fausto Foresti, Vanessa P. Cruz
Summary: The study revealed the genetic variability and population structure of S. albicaudus, indicating a panmictic population in the study area. This result highlights the need for specific management and conservation plans at the regional scale.
Article
Zoology
George M. T. Mattox, Mauricio Cetra, Camila S. Souza, Osvaldo T. Oyakawa, Rodrigo M. M. Bento, Claudio Oliveira
Summary: Spintherobolus papilliferus is an endangered characid endemic to the Atlantic Rainforest. It has been found in the upper rio Tiete basin around Sao Paulo city and a coastal stream in Bertioga, Sao Paulo State. A new distributional record of S. papilliferus was discovered in the rio Ribeira de Iguape basin in Juquitiba, Sao Paulo State. Morphometric analysis revealed a significant difference in body shape and other features between this population and the other two populations. DNA-barcoding confirmed that the rio Ribeira de Iguape population belongs to S. papilliferus.
NEOTROPICAL ICHTHYOLOGY
(2023)
Article
Multidisciplinary Sciences
Rodrigo Zieri, Lilian Franco-Belussi, Classius De Oliveira
Summary: In this study, the researchers investigated the short-term effects of alpha-MSH on melanophores, melanocytes, and melanomacrophages in the South American frog Physalaemus nattereri. They found that these melanin-containing cells increased their pigmentation after receiving the hormone, but the response varied among different organs.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2023)
