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Victor Simon, Carole Hyacinthe, Sylvie Rétaux
Fish reproductive patterns are very diverse in terms of breeding frequency, mating system, sexual dimorphisms and selection, mate choice, spawning site choice, courtship patterns, spawning behaviors and parental care. Here we have compared the breeding behavior of the surface-dwelling and cave-dwelling morphs of the characiform A. mexicanus, with the goals of documenting the spawning behavior in this emerging model organism, its possible evolution after cave colonization, and the sensory modalities involved...
2019: PloS One
Nadine Marshall, Paul Marshall, Matt Curnock, Petina Pert, Adam Smith, Bernard Visperas
The aesthetic appreciation of natural places is one of the most fundamental ways in which people relate to their environment. It provides wellbeing, an opportunity for recreation and reflection, a sense of place, and cultural enrichment. It also motivates people to take care of natural places and to conserve them for current and future appreciation. Aesthetically valuable places also support significant economic activity. However, there is little guidance available to assist environmental managers and policy-makers to consider and integrate aesthetic values into decision-making processes...
2019: PloS One
Makson M Ferreira, Rafael J Passador, Marcos Tavares-Dias
This study compared the parasites community in Corydoras ephippifer, Corydoras melanistius, Corydoras amapaensis and Corydoras spilurus from tributaries from the Amapari River in State of Amapá (Brazil). A total of 151 fish of these four ornamental species were examined, of which 66.2% were parasitized by one or more species, and a total of 732 parasites were collected. Corydoras ephippifer (91.2%) and C. spilurus (98.8%) were the most parasitized hosts, while C. amapaensis (9.6%) was the least parasitized...
February 14, 2019: Anais da Academia Brasileira de Ciências
Christiane S DE Souza, Paulo O Mafalda Junior
This study investigated the large-scale spatial and temporal variability of larval fish assemblages in the west tropical Atlantic Ocean. The sampling was performed during four expeditions. Identification resulted in 100 taxa (64 families, 19 orders and 17 suborders). During the four periods, 80% of the total larvae taken represented eight characteristics families (Scombridae, Carangidae, Paralepididae, Bothidae, Gonostomatidae, Scaridae, Gobiidae and Myctophidae). Fish larvae showed a rather heterogeneous distribution with density at each station ranging from 0...
February 14, 2019: Anais da Academia Brasileira de Ciências
Shuailiang Xu, Kefu Yu, Hongfei Su, Biao Chen, Wen Huang, Jiayuan Liang, Yinghui Wang, Guanghua Wang
A Gram-stain-negative, non-spore-forming, motile, aerobic, curved rod shaped bacterium, designed strain C51T , was isolated from coral (genus Porites) sampled at Weizhou Island, China. The optimal growth occurred in 2-3 % NaCl (w/v), at 25 °C and pH 8. Phylogenetic analyses based on the 16S rRNA gene, the gyrB gene and the Up-to-date Bacterial Core Gene set (92 genes) indicated that strain C51T forms a stable cluster with Shewanella spongiae KCTC 22492T , and had 94 % 16S rRNA gene similarity to its closest type strain S...
February 20, 2019: International Journal of Systematic and Evolutionary Microbiology
Nathan K Lujan
No abstract text is available yet for this article.
February 2019: Journal of Fish Biology
Jinxia Peng, Digang Zeng, Pingping He, Pinyuan Wei, Wang Hui, Tiejun Wu, Xiaofei Zhuo, Yong Lin
The rice flower carp (Cyprinus carpio var. Quanzhounensis) is a bony fish (superclass Osteichthyes), with very soft bones that is a significant feature unlike the other carp species. In this study, we analyzed the mRNA and microRNA (miRNA) transcriptomes in the intermuscular bones of rice flower carp and Jian carp (Cyprinus carpio var. Jian) (a typical member of common carp in China), using Illumina RNA sequencing. We identified 55,340 genes (including 47,541 known genes and 8231 predicted new genes) and 662 miRNAs (including 595 known miRNAs and 67 novel miRNAs) in the two species...
January 30, 2019: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
Da-Hye Kim, Jong-Hyeon Lee, Jeong-Eun Oh
We analyzed paired serum, urine, and hair samples from 94 Korean children and adults to investigate levels of 11 perfluoroalkyl acids (PFAAs). The effects of demographic factors and dietary habits on PFAA exposure were also assessed based on the paired samples. The total PFAA concentrations were 2.4-31 ng/mL in serum, not detected-9.5 ng/mL in urine, and 0.48-15 ng/g in hair. Levels of perfluoropentanoic acid (PFPeA) and perfluorohexanoic acid (PFHxA), which have short carbon chains, were 1.5-5 fold higher in urine and hair than in serum...
February 7, 2019: Environmental Pollution
Wan Hanna Melini Wan Mohtar, Khairul Nizam Abdul Maulud, Nur Shazwani Muhammad, Suraya Sharil, Zaher Mundher Yaseen
Malaysia depends heavily on rivers as a source for water supply, irrigation, and sustaining the livelihood of local communities. The evolution of land use in urban areas due to rapid development and the continuous problem of illegal discharge have had a serious adverse impact on the health of the country's waterways. Klang River requires extensive rehabilitation and remediation before its water could be utilised for a variety of purposes. A reliable and rigorous remediation work plan is needed to identify the sources and locations of streams that are constantly polluted...
February 8, 2019: Environmental Pollution
Cristian Gómez-Canela, Víctor Pueyo, Carlos Barata, Sílvia Lacorte, Rosa Maria Marcé
The main objective of the present study is to prioritize those pharmaceuticals that have higher chances to be detected in water due to incomplete removal in Wastewater Treatment Plants (WWTPs). To do so, the total consumption of pharmaceuticals in Catalonia (NE Spain) were compiled to calculate the predicted environmental concentrations (PECs) in wastewater effluents and in river water. PECs were estimated using publicly available consumption data in the period of 2013-2016 for a suite of 165 compounds. The selected compounds were based on generic pharmaceuticals with emphasis on drugs consumed by people aged 65 or over as they represent the age group with the highest consumption of pharmaceuticals...
February 13, 2019: Science of the Total Environment
Himanshu Yadav, Bechan Lal
Despite important actions of BMP15 (a TGFβ superfamily member) in follicular development in vertebrates, studies are mostly limited to mammals. The folliculogenic processes in lower vertebrates, particularly, fishes are quite different from mammals. It was, therefore, decided to detect the presence of BMP15 in ovarian follicles and what are its role in folliculogenesis and steroidogenesis in catfish? BMP15 protein was detected in different cellular compartments of ovarian follicles of the catfish collected during different reproductive phases, using immunohistochemical and Western blotting methods, with concurrent measurement of ovarian steroids through ELISA...
February 14, 2019: Theriogenology
Giun-Yi Hung, Ciao-Ling Wu, Yi-Ling Chou, Chiang-Ting Chien, Jiun-Lin Horng, Li-Yih Lin
This study aimed to assess the sublethal effects of a platinum-based compound, cisplatin, using a zebrafish model. Zebrafish embryos were incubated in different concentrations of cisplatin at 0-96 h post-fertilization. Using a non-invasive, scanning ion-selective electrode technique (SIET), we measured the functions of hair cells (Ca2+ influx) and ionocytes ([H+ ] gradients). The survival rate, hatching rate, phenotype, body length, whole-body ion (Na+ , Cl- , and Ca2+ ) and Pt contents were also determined...
February 13, 2019: Aquatic Toxicology
Iuri Salim Abou Anni, Yuri Dornelles Zebral, Sidnei Braz Afonso, Marianna Basso Jorge, Sandra Isabel Moreno Abril, Adalto Bianchini
The involvement of transporting proteins on copper (Cu) bioaccumulation was evaluated in the killifish Poecilia vivipara chronically exposed to environmentally relevant concentrations of waterborne Cu. Fish (<24 h-old) were maintained under control condition or exposed to different waterborne Cu concentrations (5, 9 and 20 μg/L) for 28 and 345 days in saltwater. Following exposure periods, Cu accumulation and the expression of genes encoding for the high affinity Cu-transporter (ctr1) and the P-type Cu-ATPase (atp7b) were evaluated...
February 14, 2019: Chemosphere
Pierre Labadie, Charlotte Blasi, Karyn Le Menach, Emmanuel Geneste, Marc Babut, Olivier Perceval, Hélène Budzinski
Chlorinated paraffins (CPs) are high-volume chemicals used in numerous industrial applications. Their quantitative analysis is extremely challenging and this work presents the optimization of an analytical method based on gas chromatography hyphenated with electron capture negative ionization time-of-flight high-resolution mass spectrometry (GC-ECNI-TOF HRMS) for the simultaneous determination of short-chain and medium-chain CPs (SCCPs and MCCPs, respectively) in fish tissues (i.e. dorsal muscle). The resolution of the TOF-MS analyzer reduced or eliminated isobaric interferences and the CP response was optimized through Design of Experiment...
February 13, 2019: Chemosphere
Nicholas M Wade, Timothy D Clark, Ben T Maynard, Stuart Atherton, Ryan J Wilkinson, Richard P Smullen, Richard S Taylor
Global seawater temperatures are increasing and becoming more variable, with consequences for all marine animals including those in food production systems. In several countries around the world,arming of Atlantic salmon (Salmo salar) occurs towards the upper end of the thermal tolerance window for this species, and marked effects on salmon production during summers have been experienced but never empirically investigated. This project tracked the effects of an extreme summer heatwave on two different cohorts of fish stocked into farm cages either during early winter (EW) or late winter (LW)...
February 2019: Journal of Thermal Biology
Lucas Pedro Gonçalves Junior, Cristiano Campos Mattioli, Edenilce de Fátima Ferreira Martins, Walisson de Souza E Silva, Tarso Natividade Ciolete, Angélica da Silva Vasconcellos, Ronald Kennedy Luz
The present study evaluates whether increased water temperature induces reproduction by Lophiosilurus alexandri under controlled conditions, and investigates the effects of this procedure on sexual steroids, hematological profile and behavior. A 44-week experiment was performed with four wild males and 12 wild females that had been acclimatized to captive conditions. Water temperature was maintained at 24.4 ± 1.0 °C for weeks 1-22, and then at 29.0 ± 1.1 °C for weeks 22-44. Spawn weight, number of eggs/spawn and hatching rate were satisfactory and ranged 27...
February 2019: Journal of Thermal Biology
Gaetano Cammilleri, Andrea Pulvirenti, Antonella Costa, Stefania Graci, Rosaria Collura, Maria Drussilla Buscemi, Sonia Sciortino, Valeria Vitale Badaco, Mirella Vazzana, Mariagrazia Brunone, Antonio Vella, Calogero Di Bella, Vincenzo Ferrantelli
A total of 1104 fish samples from markets of Sicily were analysed for the detection and species identification of Anisakidae nematodes. The preliminary analysis of the fish samples showed the presence of 2459 larvae. All the fish species revealed different prevalence of infestation, with a maximum of 100% for Lepidopus caudatus and a minimum of 4.5% in Sardina pilchardus. The 80% of the larvae examined by PCR-RFLP analysis belonged to Anisakis pegreffii species. The seasonal infestation trend of Anisakis was evaluated in all the fish sample examined...
February 20, 2019: Natural Product Research
Tomoko Asai, Akira Takahashi, Kumie Ito, Tatsuo Uetake, Yasuki Matsumura, Kaori Ikeda, Nobuya Inagaki, Masahiro Nakata, Yoshiharu Imanishi, Kenji Sato
Objectives of the present study were to evaluate amounts of collagen in Japanese daily dishes and contents of food-derived collagen peptides in human blood. The meat in one serving of most Japanese daily dishes contains 0.2-2.5 g of collagen, except for beef tendon, eel with skin, and skinned shark tail (7.6-13.3 g). After ingestion of cooked shark meat, nine collagen di- and tri-peptides were detected in plasma and the area under the curve of most peptides, except for Hyp-Gly and Pro-Hyp-Gly, was ~30% of that after ingestion of collagen hydrolysate containing an equivalent amount of collagen...
February 20, 2019: Journal of Agricultural and Food Chemistry
Kyle L Wilson, Joe De Gisi, Christopher L Cahill, Oliver E Barker, John R Post
Plasticity, local adaptation, and evolutionary tradeoffs drive clinal variation in traits associated with lifetime growth. Disentangling the processes and determinants that cause these traits to vary helps to understand species' responses to changing environments. This is particularly urgent for exploited populations, where size-selective harvest can induce life-history evolution. Lake trout (Salvelinus namaycush) are an exploited fish with a life history adapted to low-productivity freshwaters of northern North America, which makes them highly vulnerable to ecosystem changes and overfishing...
February 19, 2019: Journal of Animal Ecology
Shengnan Kong, Qiaozhen Ke, Lin Chen, Zhixiong Zhou, Fei Pu, Ji Zhao, Huaqiang Bai, Wenzhu Peng, Peng Xu
The large yellow croaker (Larimichthys crocea) is the most economically important marine cage-farming fish in China in the past decade. However, the sustainable development of large yellow croaker aquaculture has been severely hampered by several diseases, of which, the white spot disease caused by ciliate protozoan parasite Cryptocaryon irritans ranks the most damaging disease in large yellow croaker cage farms. To better understand the genetic basis of parasite infection and disease resistance to C. irritans, it is vital to map the traits and localize the underlying candidate genes in L...
February 19, 2019: Marine Biotechnology
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