Study of the functional morphology of mouthparts of parasitic isopods of marine fishes

Rameshkumar, Ganapathy; Ravichandran, S.; Allayie, Sartaj Ahmad

doi:10.1016/s2222-1808(13)60056-0

Cited by 11 publications

(6 citation statements)

References 21 publications

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“…In the present study, the histopathological alterations in the fish gills infested with Livoneca redmanii showed hyperplasia of epithelial cells in gill filament, hyperplasia of lamellar epithelium and mucous secreting cells tend to be confusion between secondary gill lamellae, lifting of secondary lamellae and congested blood vessels were also noticed. These findings were similar to that reported by Thatcher et al (2003), Noor El-Deen (2007, Toksen et al (2008), Noor El-Dean et al 2012, Rameshkumar et al (2013), Youssef et al (2014) and Abdel-Mawla et al (2015). The detected deleterious impacts such as confusion between secondary gill lamellae, lifting and congested blood vessels might be attributed to the pressure of the parasite feeding and its direct contact with the large sized isopod species (Kabata, 1970 andAbdel-Latif, 2016).…”

Section: Discussionsupporting

confidence: 88%

Infestation Study of Livoneca redmanii (Isopoda, Cymothoidae) on Mugil cephalus in Lake Qarun, Egypt

Helal

Yousef

2018

Egyptian Academic Journal of Biological Sciences, B. Zoology

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Section: Discussionsupporting

confidence: 88%

Infestation Study of Livoneca redmanii (Isopoda, Cymothoidae) on Mugil cephalus in Lake Qarun, Egypt

Helal

Yousef

2018

Egyptian Academic Journal of Biological Sciences, B. Zoology

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“…Generally, the isopods parasitize many fishes' species worldwide causing significant economic losses (Ravichandran et al, 2011). They have been identified to cause deleterious effects on cultured fish, such as stunted growth, anemia, and mortalities of fries and fingerlings (Ravi and Rajkumar, 2007;Rameshkumar et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

“…Isopods recorded to parasites many species of commercially important fishes worldwide causing significant economic losses to fisheries (Rameshkumar et al, 2013), where the incidence and intensity of parasitic isopods exhibit a considerable variation (Grutter, 2003;Cuyas et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Infestation Study of Livoneca Redmanii (Isopoda, Cymothoidae) on Solea Solea in Lake Qarun, Egypt

Khalaf-Allah

Yousef

2019

Journal of the Egyptian Society of Parasitology

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The study dealt with the infestation of Livoneca redmanii (Isopoda, Cymothoidae) on Solea solea in Lake Qarun, Egypt. 487 specimens of S. solea were examined to extract 99 crustacean parasites. Fish specimens were collected monthly from Eastern and Western regions of Lake Qarun, during the period from January to December, 2016.The results showed that S. solea was infested by L. redmanii. The highest infestation recorded was in June b, 38.64 % and the lowest one (10.34 %) in October. The infested fish S. solea were mostly females. The highest male infestation was during March (18.37%) and the lowest in April (2.04%).The highest female infestation was during July (22%) and the lowest in August and October (2%). The highest infestation (37.38%) was in mid length group 14cm and the lowest (1.01%) was in large fish at length group 19cm. The highest infestation (43.44 %) was in weight group 30gm and the lowest one (3.07%) was in largest and smallest fishes at weight group 10 & 70gm. The ecto-parasitic Isopods, L. redmanii infest gills, ventral side, dorsal side, mouth, head and tail sites on the integument of S. solea. The bilateral and/or unilateral infestation per fish was in gills region (73.7%). The main clinical signs in infested S. solea were respiratory distress as surface swimming with opened mouth and gill cover. Also, they showed sluggish movement, emaciation, excessive amounts of mucous covering the body surface. Post-mortum examination showed lesions of focal erosion in skin and gills.Based on the parasitic treatment trails with salinity, the most suitable solution to make control on the parasite blooming was increasing the fresh water flow to adjust the parasite activity and to minimize the optimum condition of blooming.

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“…Cymothoids can impair growth and cause physical damage to their hosts during all life stages (Fogelman et al., 2009; Kroger & Guthrie, 1972; Mladineo, 2003; Rameshkumar et al., 2013; Sikkel & Welicky, 2019; Smit et al., 2014). Immediately after release from the marsupium, mancae of A. apogonae are capable of attaching and taking a blood meal from a host (Fogelman & Grutter, 2008).…”

Section: Introductionmentioning

confidence: 99%

Infection prevalence and pathology of the cymothoid parasite Olencira praegustator in Atlantic menhaden

Rose

Calhoun

Johnson

2020

Invertebrate Biology

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Cymothoidae (Crustacea, Isopoda) is a family of obligate ectoparasites that infect boney and cartilaginous fishes in aquatic environments worldwide, excluding the Arctic (Smit et al., 2014). Most cymothoids are found in shallow tropical waters, and the central Indo-Pacific supports the highest cymothoid diversity, with 79 of the estimated 365 species worldwide (Smit et al., 2014). While 310 species representing 32 genera of Cymothoidae are found on or in marine fishes, several genera have adapted to freshwater systems, notably within the Amazon Basin and Rift Valley Lakes in eastern Africa (Hata et al., 2017; Smit et al., 2014). As true ectoparasites, cymothoids attach exteriorly to the scales of fish, burrow inside hosts' body cavities, or infest the buccal and branchial cavities, where they consume host tissue and blood (Sikkel & Welicky, 2019; Smit et al., 2014). Although many species are relative generalists able to infect multiple species (Bruce, 1986; Smit et al., 2014), others have been documented on only a single fish species. For instance, Anilocra chaetodontis Bunkley Williams & Williams 1981 can infect four species in the genus Chaetodon (Welicky et al., 2017), but Mothocya bermudensis Bruce, 1986 is highly host specific and has only been reported from one species, the common halfbeak (Hyporhamphus unifasciatus ranzani 1841)

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Study of the functional morphology of mouthparts of parasitic isopods of marine fishes

Cited by 11 publications

References 21 publications

Infestation Study of Livoneca redmanii (Isopoda, Cymothoidae) on Mugil cephalus in Lake Qarun, Egypt

Infestation Study of Livoneca redmanii (Isopoda, Cymothoidae) on Mugil cephalus in Lake Qarun, Egypt

Infestation Study of Livoneca Redmanii (Isopoda, Cymothoidae) on Solea Solea in Lake Qarun, Egypt

Infection prevalence and pathology of the cymothoid parasite Olencira praegustator in Atlantic menhaden

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