{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T12:27:52Z","timestamp":1747225672355,"version":"3.40.5"},"reference-count":0,"publisher":"Acta Fisheries and Aquatic Resources (ActaPesca News)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["ActaPesca"],"abstract":"<jats:p>Ultrastructural and histopathological ocasional parasite survey of some samples of the teleostean, Trachurus trecae (Carangidae), collected on the Atlantic coast of Angola were found infected by prokaryotic organisms identified as belonging to two morphotypes of Gram-negative bacteria located inside on extracellular space of the connective tissue of the endomysium among the skeletal muscle fibers. By serial ultrathin sections was observed that the majority of bacteria were cylindrical morphology, some appeared in division measuring 2.8 \u00b1 0.7 \u00b5m long x 0.9 \u00b1 0.3 \u00b5m in diameter, other having spherical form measuring 2.8 \u00b1 0.4 \u00b5m in diameter. The ultrastructural organization of the myofibres contacting with of region where the bacteria were located, present the myofibrils ultrastructurally disorganized, without the typical muscular striations. The pathogenic effects of the two bacterial association seemed to give rise to the myofibrils lysis and concomitant disintegration and rupture of the wall of the muscle fibres, forming a recess where the bacteria live in close proximity. Muscle fiber wall in contact with the local where the bacteria were localized appeared lysed, disorganized and without the typical striations where, among them, some bacteria were observed. Some aspects of apparent penetration of bacteria through the degraded wall of the myofibers into the interior of the fibers, were observed and discussed. This is the first description of the pathogenic activity of bacteria in muscle tissue of a teleost from the aquatic fauna of Angola.<\/jats:p>","DOI":"10.46732\/actafish.2024.12.2.104-109","type":"journal-article","created":{"date-parts":[[2024,9,15]],"date-time":"2024-09-15T14:36:46Z","timestamp":1726411006000},"page":"104-109","source":"Crossref","is-referenced-by-count":0,"title":["ULTRASTRUCTURAL ASPECTS OF TWO MORPHOTYPES OF GRAM-NEGATIVE BACTERIA LOCATED IN THE ENDOMYSIUM OF THE SKELETAL MUSCLE OF Trachurus trecae (CARANGIDAE) IN ANGOLA"],"prefix":"10.46732","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0424-1488","authenticated-orcid":false,"given":"Carlos","family":"Azevedo","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1342-0405","authenticated-orcid":false,"given":"Nahyma","family":"Andrade","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9680-661X","authenticated-orcid":false,"given":"Gra\u00e7a","family":"Casal","sequence":"additional","affiliation":[]}],"member":"26146","published-online":{"date-parts":[[2024]]},"container-title":["Acta of Fisheries and Aquatic Resources"],"original-title":[],"deposited":{"date-parts":[[2024,9,15]],"date-time":"2024-09-15T14:36:47Z","timestamp":1726411007000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.actapescanews.com\/_files\/ugd\/4aa20f_376d328d895c438498c0d28742f71c7d.pdf"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024]]},"references-count":0,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2024]]}},"URL":"https:\/\/doi.org\/10.46732\/actafish.2024.12.2.104-109","relation":{},"ISSN":["2357-8068"],"issn-type":[{"type":"electronic","value":"2357-8068"}],"subject":[],"published":{"date-parts":[[2024]]}}}