Results 41 to 50 of about 22,138 (248)
Metabolism of cryptoxanthin in freshwater fish [PDF]
British Journal of Nutrition, 1984 1. In search of other provitamins A, the metabolism of cryptoxanthin was studied in several species of freshwater fish, i.e. Chunna gachua, Labeo boga (retinol-rich) and Heteropneustes fossilis (dehydroretinol-rich). The fish were either allowed to starve for 20–25 d to make their intestines free from carotenoids and vitamin A or kept on a vitamin-A ...
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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 +8 more
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Keeping up with the status of freshwater fishes: A California (USA) perspective
Conservation Science and Practice, 2021 Freshwater biodiversity loss exceeds that in terrestrial systems; fishes are a predominant indicator of this catastrophe. Current worldwide estimates of freshwater fish species threatened with extinction are about 30%.
Robert A. Leidy, Peter B. Moyle
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Freshwater Fishes and Zoogeography of Pakistan [PDF]
Bijdragen tot de Dierkunde, 1975 The freshwater fish fauna of Pakistan is briefly discussed. It is predominantly South Asian but High Asian and West Asian elements are also present. The African element is hardly perceptible. Five zoogeographical divisions of Pakistan are proposed on the basis of the composition of their fish fauna: (I) the High Asian Division; (II) the Aba-Sinh ...
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The Anatomical Record, EarlyView.Abstract Despite the distinctly different shapes of their tongues, the tongue gross anatomy of Saimaa ringed seal closely resembled that of Baltic ringed seal. There were no differences in the extrinsic and intrinsic tongue muscles or their associated vascularization and innervation between Saimaa and Baltic ringed seals.
Juha Laakkonen, Heini Nihtilä
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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 +4 more
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Aquaculture ReportsAnthropogenic underwater noise is a growing threat to fish and has been shown to interfere with social behavior and reproductive outcomes. Yet very few studies have addressed the molecular mechanisms behind it.
Ruiqi He +8 more
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The Anatomical Record, EarlyView.Abstract Composed of various minerals, the eggshell provides ideal conditions for embryonic development, and understanding its composition and structure is essential for clarifying its relationship with bone formation. This study characterized the structure and mineral profile of the Rhinoclemmys punctularia punctularia eggshell in relation to ...
Igor Mathias Trindade Lemos +8 more
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Integrated Environmental Assessment and Management, EarlyView., 2023 Abstract In the Lake Koocanusa‐Kootenai River system (Montana, USA and British Columbia, Canada), selenium (Se) contamination has become an international concern and is suspected to contribute to the observed burbot (Lota lota) population collapse. Due to our limited ability to sample burbot in Lake Koocanusa for monitoring studies, we used a reference
Stephanie D. Graves +6 more
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BiologyFish gut microbiota is essential for maintaining host physiological health but is constantly threatened by environmental chemicals. Diphenyl phosphate (DPhP), a major degradation product of organophosphate flame retardants and an environmental pollutant ...
Tong Zhou +9 more
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