Effect of parasitic isopods in the marine fish Carangids malabaricus off Parangipettai coastal waters

2010 ◽  
Vol 7 (4) ◽  
pp. 369 ◽  
Author(s):  
S. Ravichandran ◽  
S. Sunitha ◽  
G. Rameshkumar
Keyword(s):  
Marine Fish ◽  
Coastal Waters ◽  
Parasitic Isopods

scholarly journals Cymothoa spinipalpa sp. nov. (Isopoda, Cymothoidae) a buccal cavity parasite of the marine fish, Oligoplites saurus (Bloch & Schneider) (Osteichthyes, Carangidae) of Rio Grande do Norte State, Brazil

2007 ◽  
Vol 24 (1) ◽  
pp. 238-245 ◽  
Author(s):  
Vernon E. Thatcher ◽  
Gustavo S. de Araújo ◽  
José T. A. X. de Lima ◽  
Sathyabama Chellappa
Keyword(s):  
New Species ◽  
Marine Fish ◽  
Coastal Waters ◽  
Anterior Margin ◽  
Buccal Cavity ◽  
Rio Grande ◽  
Adult Males ◽  
Fish Hosts

Cymothoa spinipalpa sp. nov. (Isopoda, Cymothoidae) a buccal cavity parasite of the marine fish, Oligoplites saurus, is described on the basis of eight male specimens and one female. The fish hosts were captured in the coastal waters of Natal, Rio Grande do Norte State, Brazil. In the new species, the anterior margin of the cephalon is doubled ventrally over the bases of the antennae. In this respect, it resembles C. recifea Thatcher & Fonseca, 2005. It differs from that species, however, in being much smaller and having basal carinae on the pereopods 4 to 7 that are small and rounded (not large and pointed). Also, pleopods 2-4 lack the folds and pockets that are present in C. recifea. The new species can be distinguished from all known Cymothoa spp. by the mandibular palps which are entirely covered with small spines in adult males. The mancas of the new species resemble those of Cymothoa oestrum since they have elongate antennae but they are wider and have shorter uropods.

A checklist of parasitic helminths reported from sixty-five species of marine fish from Turkey including two new records of monogeneans

Zootaxa ◽  
2005 ◽  
Vol 1063 (1) ◽  
pp. 33 ◽  
Author(s):  
AHMET ÖKTENER
Keyword(s):  
Mediterranean Sea ◽  
Marine Fish ◽  
Coastal Waters ◽  
New Records ◽  
Sea Of Marmara ◽  
Parasitic Helminths ◽  
The Mediterranean ◽  
First Time ◽  
Belone Belone

This study provides a checklist of 114 parasitic helminths (87 Platyhelminthes; 16 Nemathelminthes; 9 Acanthocephala; 2 Annelida) reported from 65 marine fish collected from Turkey since 1931, including locations where fish were collected. Two species of microcotylids (Monogenea): Pyragraphorus pyragraphorus (Mac Callum and Mac Callum, 1913) on garrick, Trachynotus ovatus (Linnaeus, 1758) (Carangidae), from the Mediterranean Sea and Axine belones Abildgaard, 1794 on garfish, Belone belone (Linnaeus,1761) (Belonidae), from the Sea of Marmara are reported for the first time in Turkish coastal waters.

Invasive Species of Florida’s Coastal Waters: The Red Lionfish (Pterois volitans) and Devil Firefish (P. miles)

EDIS ◽  
2013 ◽  
Vol 2013 (11) ◽  
Author(s):  
Maia McGuire ◽  
Jeffrey Hill
Keyword(s):  
Invasive Species ◽  
Atlantic Ocean ◽  
Marine Fish ◽  
Coastal Waters ◽  
Pterois Volitans ◽  
Genetic Studies ◽  
Fact Sheet ◽  
Deliberate Release ◽  
Ocean Ecosystem ◽  
Red Lionfish

Two species of Indo-Pacific lionfish (Pterois volitans and P. miles) are the first reported non-native marine fish to become established in the Atlantic Ocean. Genetic studies indicate that lionfish in the Atlantic are likely all descendants of a few individuals, consistent with the widely held belief that lionfish were introduced into the Atlantic as a result of accidental or deliberate release of aquarium pets. Regardless of the method of introduction, the prolific spread of these invasive species in the Atlantic Ocean ecosystem is cause for concern. This 5-page fact sheet was written by Maia McGuire and Jeffrey Hill, and published by the UF Department of Sea Grant, January 2014. http://edis.ifas.ufl.edu/sg132

Length‐weight relationships of 79 marine fish species from the coastal waters of Hong Kong

2019 ◽  
Vol 35 (3) ◽  
pp. 779-788
Author(s):  
Matthew J. Perkins ◽  
Yanny K. Y. Mak ◽  
Calton S. W. Law ◽  
Lily S. R. Tao ◽  
Jason K. C. Yau ◽  
...  
Keyword(s):  
Hong Kong ◽  
Marine Fish ◽  
Fish Species ◽  
Coastal Waters ◽  
Marine Fish Species

scholarly journals Sea lice (Ceratothoa oestroides), (Rissa, 1826), infestation in Mediterranean aquaculture: new information

2017 ◽  
Vol 57 (3) ◽  
pp. 223 ◽  
Author(s):  
St. VAGIANOU (ΒΑΓΙΑΝΟΥ ΣΤ) ◽  
K. BITCHAVA (Κ. ΜΠΙΤΧΑΒΑ) ◽  
F. ATHANASSOPOULOU (ΑΘΑΝΑΣΟΠΟΥΛΟΥ Φ.)
Keyword(s):  
Freshwater Fish ◽  
Coastal Waters ◽  
Field Experiments ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Sea Bream ◽  
Hatching Rate ◽  
Parasitic Isopods ◽  
The Mediterranean ◽  
Sparus Auratus

Arthropoda parasites of fish are: Copepoda, Branchiura and Isopoda. The Branchiura are exclusively parasitic, while most of the Copepoda and Isopoda are free-living. About 450 species of isopods are parasites of marine and freshwater fish. Isopods are Malacostraca. In the isopod families Cymothoidae and Anilocridae, which number about 200 species, are parasitic species that remain on the fish body throughout their life. The main genus/species of interest to the Greek marine fish farmers is Ceratothoa oestroides. Other isopod species (Flabellifera-Cymothoidae, Anilocridae) have been reported to infest net-pen reared sea bass and/or sea bream, such as: Anilocra physodes, Nerocila orbignyi, Emetha audouini, Ceratothoa parallela. The name "Anilocra" is widely used by farmers for any type of isopods infesting their fish. A mature gravid female isopod releases about 400-550 larvae at a time. Ceratothoa sp are constantly fertile, remaining in reproductive condition throughout the year. Fecundity and hatching rate increase in warmer temperatures, July being the period of optimum isopod proliferation in the Mediterranean.Members of these families (Cymothoidae, Anilocridae) are protandrus hermaphrodites, i.e. an individual develops and functions first as a male and then may become a female. Sexual differentiation takes place after the pulii II larvae have left the marsupium. Regarding the most sensitive age of the fish hosts when the parasites attach in their buccal cavity, empirical observations agree with research results that there is a significant correlation between the level of infection and the length of the host. Fish fry are the evident target for isopod attachment. Ceratothoa oestroides pulii II larvae remain free swimming and capable of infecting a host for about 7 days at 22°C. During this period, in case the host dies, after successful settlement of the parasite, the isopod larvae immediately abandon the dead fish and are still capable of actively seeking another. Parasitic isopods are fairly common crustacean infestations of wild tropical marine fish.They are less common in cold marine waters and not often found on freshwater fish. The distribution of parasitic isopods, as that of all other parasites, is closely related to the occurrence and ecology of their hosts. Demersal fish in coastal waters are mainly infected, the parasites being rarer in benthic- and pelagic fish. Intensive fish farming in coastal waters in the Mediterranean provides an almost ideal environment for isopod parasites, hence, farmed sea bream (Sparus auratus), but mostly sea bass (Dicentrarchus labrax) infestations by isopods comprise a frequent problem in the Mediterranean. Ceratothoa oestroides is the most common among the isopod parasites and inflicts major damage to farmed fish. Among the wild fish, the usual hosts of parasitic isopods are mullets (Mugil sp., Liza sp.), bogues (Boops boops), goldlines (Boops salpa), striped breams (Lithognathus mormyrus) and white breams (Diplodus sargus). These fish species abound in the vicinity of sea bream (Sparus auratus) and sea bass (Dicentrarchus labrax) net pens feeding on waste feed and comprise the vectors for the transmission of the parasites to the farmed species. Heavy infestations of parasitic larvae may kill smaller fish when they first infect them, while seeking permanent attachment. Injured tissues are frequently invaded by secondary bacterial pathogens, such as Aeromonas sp., Flexibacter sp., Vibrio sp. and this may lead to severe escalation of mortality. In young stocks, the cumulative mortality due to parasitism by the pulii II larvae may run as high as 15% even without any bacterial implications. Isopod infestation is confirmed by gross observation of the parasites on the skin, mouth or in the gill chamber of the fish. Recommended prevention would be mainly by means of stock management measures. Excessive fish densities in the fry holding pens must be avoided. Often, in cases of heavy parasitism and mortality, reducing the fish density is enough by itself to remedy the situation. It is worth noting that on farms, where injection vaccination of sea bass is routinely performed, manual delousing of the anaesthetised fish, by means of small blunt forceps, prior to injecting results in a sharp drop of fish retaining adult isopods. Treatment of isopod larvae infestations has been attempted with considerable success by means of hourly formalin baths, at concentrations of about 150ppm, subsequent to enclosing the fish in a tarpaulin and providing ample water oxygenation. Laboratory and field experiments with deltamethrin (pyrethroid), in live fish and in isolated parasites, have indicated that the minimum effective in vitro dose, that kills  Ceratothoa oestroides adults in 30 minutes, is 0.05mg/litre.

A new marine fish leech species of the genus Oceanobdella (Clitellata, Piscicolidae) from coastal waters of Sakhalin Island

2009 ◽  
Vol 54 (4) ◽  
Author(s):  
Serge Utevsky
Keyword(s):  
New Species ◽  
Marine Fish ◽  
Coastal Waters ◽  
Sakhalin Island ◽  
Entire Length ◽  
Unique Combination ◽  
Accessory Glands ◽  
Southern Sakhalin ◽  
Aniva Bay ◽  
A New Species

AbstractA new species of marine fish leeches is described and compared with its congeners. Oceanobdella sakhalinica possesses a unique combination of characters: the anterior sucker is small; one of posterior transverse bands on the urosome is very dark; a wedge-shaped patch is located on the posterior sucker; posterior crop caeca are separate for their entire length; accessory glands on the atrium are lacking; five pairs of testisacs are present; the copulatory area and the conductive tissue are lacking. Hosts include a sculpin Myoxocephalus sp. and the blackline prickleback Acantholumpenus mackayi. The leeches were collected in Aniva Bay, southern Sakhalin.

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