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A New Species of the Blind Cave Loach Genus Protocobitis (Cypriniformes: Cobitidae), Protocobitis longicostatus sp. nov., from Guangxi, China
Zoolog Sci. 2024 Apr;41(2):210-215. doi: 10.2108/zs230104.ABSTRACTProtocobitis species are typical cave-dwelling fish, exhibiting distinctive morphological adaptations such as colorless body, lack of eyes, and reduced scales and ribs in response to their extreme cave habitats. Distinct from the recorded species, P. anteroventris, P. polylepis, and P. typhlops, a new species, Protocobitis longicostatus sp. nov., is described from Guangxi Zhuang Autonomous Region, China. Protocobitis longicostatus sp. nov. can easily be distinguished from all known congeners by the following characteristics: whole body covered by scales exce...
Source: Zoological Science - April 8, 2024 Category: Zoology Authors: Jia-Jun Zhou Zhi-Xian Qin Li-Na Du Hong-Ying Wu Source Type: research

Consistent Negative Correlations between Parasite Infection and Host Body Condition Across Seasons Suggest Potential Harmful Impacts of Salmincola markewitschi on Wild White-Spotted Charr, Salvelinus leucomaenis 
In this study, we investigated the potential impacts of mouth-attaching Salmincola markewitschi on white-spotted charr (Salvelinus leucomaenis) through intensive field surveys across four seasons using host body condition as an indicator of harmful effects. The prevalence and parasite abundance were highest in winter and gradually decreased in summer and autumn, which might be due to host breeding and/or wintering aggregations that help parasite transmissions. Despite seasonal differences in prevalence and parasite abundance, consistent negative correlations between parasite abundance and host body condition were observed ...
Source: Zoological Science - April 8, 2024 Category: Zoology Authors: Ryota Hasegawa Itsuro Koizumi Source Type: research

Guidelines for Pathologic Diagnosis of Mesothelioma
CONCLUSIONS.—: There was consensus opinion regarding guidelines for (1) histomorphologic diagnosis of mesothelial tumors, including distinction of epithelioid, biphasic, and sarcomatoid mesothelioma; recognition of morphologic variants and patterns; and recognition of common morphologic pitfalls; (2) molecular pathogenesis of mesothelioma; (3) application of immunohistochemical markers to establish mesothelial lineage and distinguish mesothelioma from common morphologic differentials; (4) application of ancillary studies to distinguish benign from malignant mesothelial proliferations, including BAP1 and MTAP immunostains...
Source: Archives of Pathology and Laboratory Medicine - April 8, 2024 Category: Laboratory Medicine Authors: Aliya N Husain David B Chapel Richard Attanoos Mary Beth Beasley Luka Brcic Kelly Butnor Lucian R Chirieac Andrew Churg Sanja Dacic Francoise Galateau-Salle Kenzo Hiroshima Yin P Hung Sonja Klebe Thomas Krausz Andras Khoor Leslie Litzky Alberto Marchevsky Source Type: research

Early life stage exposure to fenbuconazole causes multigenerational cardiac developmental defects in zebrafish and potential reasons
Environ Pollut. 2024 Apr 6:123938. doi: 10.1016/j.envpol.2024.123938. Online ahead of print.ABSTRACTWith the increasing use of triazole fungicides in agriculture, triazole pesticides have aroused great concern about their toxicity and ecological risk. The current study investigated the impairments of embryonic exposure to fenbuconazole (FBZ) on cardiac transgenerational toxicity and related mechanisms. The fertilized eggs were exposed to 5, 50 and 500 ng/L FBZ for 72 h, and the larvae were then raised to adulthood in clean water. The adult fish were mated with unexposed fish to produce maternal and paternal F1 and F2 embry...
Source: Environmental Pollution - April 8, 2024 Category: Environmental Health Authors: Ying Zhang Jiaojiao Guo Chen Tang Ke Xu Zihui Li Chonggang Wang Source Type: research

Long-term radiological assessment of a Mediterranean freshwater ecosystem surrounding a nuclear power plant
Environ Sci Pollut Res Int. 2024 Apr 8. doi: 10.1007/s11356-024-33140-0. Online ahead of print.ABSTRACTThe radionuclide concentration of man-made radionuclides on non-human biota in freshwater ecosystems has been extensively studied in environments affected by the Chernobyl and Fukushima accidents, in both humid continental and subtropical climates, respectively. However, there are very few studies that assess the long-term effects of operating nuclear facilities in Mediterranean environments. In the present study, a temporal analysis of the impact on carp, cattail, and bulrushes in the cooling pond of the currently operat...
Source: Environmental Science and Pollution Research International - April 8, 2024 Category: Environmental Health Authors: Jos é Ángel Corbacho Javier Guill én Source Type: research

Mixture of pesticides based on dimethylamine and imidacloprid affects locomotion of adult zebrafish
In this study, our objective was to analyze whether two pesticides, DBH and IBI at environmentally relevant concentrations of 320 μg/L for each compound, and their mixtures impact the behavioral and endocrine parameters of adult zebrafish, verifying the effect of pesticides on exploratory behavior and social and analyzing hormonal parameters related to stress. Acute exposure to the mixture of pesticides reduced fish locomotion. Pesticides alone and in combination did not affect cortisol levels in exposed animals. Pesticides, when tested together, can cause different effects on non-target organisms, and the evaluation of m...
Source: Environmental Science and Pollution Research International - April 8, 2024 Category: Environmental Health Authors: Lisiane Siqueira Amanda Carolina Cole Varela Suelen Mendon ça Soares Milena Fortuna Nat ália Freddo J éssica Nardi Ísis Piasson Barletto Ana Carolina Martins Dos Santos Ma íra Souza Ariotti Gabri éla Witkowski Rutikoski Cecilia Mazutti Andrade Milen Source Type: research

Element contamination of the Orange-Vaal River basin, South Africa: a One Health approach
Environ Sci Pollut Res Int. 2024 Apr 9. doi: 10.1007/s11356-024-32932-8. Online ahead of print.ABSTRACTNumerous low-income groups and rural communities depend on fish as an inexpensive protein source worldwide, especially in developing countries. These communities are constantly exposed to various pollutants when they frequently consume polluted fish. The largest river basin in South Africa is the Orange-Vaal River basin, and several anthropogenic impacts, especially gold mining activities and industrial and urban effluents, affect this basin. The Department of Environment, Forestry and Fisheries in South Africa has approv...
Source: Environmental Science and Pollution Research International - April 8, 2024 Category: Environmental Health Authors: Johannes Hendrik Erasmus Marliese Truter Nico Jacobus Smit Milen Nachev Bernd Sures Victor Wepener Source Type: research

Physiological responses of European sea bass (Dicentrarchus labrax) exposed to increased carbon dioxide and reduced seawater salinities
CONCLUSION: Juvenile sea bass were relatively successful in keeping acid base balance under an ocean acidification scenario. However, this came at a cost for ionoregulation with reduced NKA, NKCC and Rhbg expression rates as a consequence.PMID:38587695 | DOI:10.1007/s11033-024-09460-2 (Source: Molecular Biology Reports)
Source: Molecular Biology Reports - April 8, 2024 Category: Molecular Biology Authors: Warren G Caneos Jyotsna Shrivastava Moses Ndugwa Gudrun De Boeck Source Type: research

Gene Duplication of Androgen Receptor As An Evolutionary Driving Force Underlying the Diversity of Sexual Characteristics in Teleost Fishes
Zoolog Sci. 2024 Feb;41(1):68-76. doi: 10.2108/zs230098.ABSTRACTSexual dimorphism allows species to meet their fitness optima based on the physiological availability of each sex. Although intralocus sexual conflict appears to be a genetic constraint for the evolution of sex-specific traits, sex-linked genes and the regulation of sex steroid hormones contribute to resolving this conflict by allowing sex-specific developments. Androgens and their receptor, androgen receptor (Ar), regulate male-biased phenotypes. In teleost fish, ar ohnologs have emerged as a result of teleost-specific whole genome duplication (TSGD). Recent ...
Source: Zoological Science - April 8, 2024 Category: Zoology Authors: Tsukasa Ryu Keigo Okamoto Satoshi Ansai Miki Nakao Anu Kumar Taisen Iguchi Yukiko Ogino Source Type: research

Effects of Water Temperature on the Body Color and Expression of the Genes Related to Body Color Regulation in the Goldfish
Zoolog Sci. 2024 Feb;41(1):117-123. doi: 10.2108/zs230062.ABSTRACTMelanin-concentrating hormone (MCH), melanocyte-stimulating hormone (MSH), and somatolactin (SL) in the hypothalamus-pituitary axis are associated with body color regulation in teleost fish. Although these hormones' production and secretion respond well to light environments, such as background color, little is known about the effects of different water temperatures. We investigated the effects of water temperature, 10°C, 20°C, and 30°C, on body color and the expression of these genes and corresponding receptor genes in goldfish. The body color in white b...
Source: Zoological Science - April 8, 2024 Category: Zoology Authors: Tingshu Yang Satoshi Kasagi Akiyoshi Takahashi Kanta Mizusawa Source Type: research