Checklist of Fish Hosts of Species of Lernaea Linnaeus, 1758 (Hexanauplia: Cyclopoida: Lernaeidae) in Iraq

2021 ◽  
Vol 5 (1) ◽  
pp. 53-73
Author(s):  
Furhan Mhaisen
Keyword(s):  
Fish Species ◽  
Fish Ponds ◽  
Larval Stages ◽  
Drainage Networks ◽  
Ecological Aspects ◽  
The Common ◽  
Lernaea Cyprinacea ◽  
Fish Hosts ◽  
Histopathological Effects ◽  
New Habitats

Surveying literature concerning the occurrence of Lernaea cyprinacea and L. oryzophila as well as some unidentified Lernaea species infecting fishes of Iraq, showed the infection of 31 fish species with L. cyprinacea, one fish species with L. oryzophila and seven fish species with unidentified Lernaea species as adults or larval stages. The infections were distributed in Tigris, Euphrates and Shatt Al-Arab rivers as well as some of their tributaries, lakes, marshes, drainage networks in addition to many fish ponds and floating cages in different parts of Iraq. The study also provided information on control methods, histopathological effects, some ecological aspects of the infection, life cycle, experimental infection, fertilization of fish ponds and effect of water pollution on the infection with L. cyprinacea. It is concluded that fail of inspection of the common carp, Cyprinus carpio, while transferring to different inland waters and fish farm as well as ignoring the application of quarantine measures plaid an important role in spreading L. cyprinacea in new habitats as well as the infection of other freshwater fishes with this parasite.

scholarly journals Checklist of Fish Hosts of Species of Contracaecum Railliet & Henry, 1912 (Nematoda: Ascaridida: Anisakidae) in Iraq

2021 ◽  
Vol 5 (2) ◽  
pp. 281-306
Author(s):  
Furhan Mhaisen
Keyword(s):  
Bird Species ◽  
Fish Ponds ◽  
Type B ◽  
Marine Fish Species ◽  
Drainage Networks ◽  
Contracaecum Rudolphii ◽  
Ecological Aspects ◽  
Unidentified Species ◽  
Fish Hosts ◽  
Different Parts

Surveying literature concerning the occurrence of the nematode larval forms of the genus Contracaecum in fishes of Iraq, showed the infection of 44 freshwater and marine fish species in Iraq with such larvae. The infection included larvae of unidentified Contracaecum species, Contracaecum rudolphii type-B and Contracaecum septentrionale Kreis, 1955. The infections were distributed in Tigris, Euphrates and Shatt Al-Arab rivers as well as some of their tributaries, lakes, marshes, drainage networks in addition to many fish ponds and floating cages in different parts of Iraq. This checklist also provided references on some histopathological and biochemical changes, some ecological aspects of the infection, life cycle and scanning electron microscopy. In addition, this checklist includes literature on six species of adult Contracaecum species as well some unidentified species of this genus from 17 bird species from different parts of Iraq, of which both Eurasian bittern Botaurus stellaris and pygmy cormorant Microcarbo pygmaeus were infected with a maximum number of three Contracaecum species as well as unidentified species of this genus.

Infestation of the pumpkinseed Lepomis gibbosus (Teleostei: Cyprinidae) by the copepod Lernaea Cyprinacea (Crustacea) - some ecological aspects

2011 ◽  
Vol 54 (1) ◽  
pp. 63-68 ◽  
Author(s):  
Mala-Maria Stavrescu-Bedivan ◽  
Oana Popa ◽  
Florin Aioanei ◽  
Luis Popa
Keyword(s):  
Host Size ◽  
Lepomis Gibbosus ◽  
Pumpkinseed Sunfish ◽  
Ecological Aspects ◽  
Lernaea Cyprinacea ◽  
Fish Hosts

Infestation of the pumpkinseed Lepomis gibbosus (Teleostei: Cyprinidae) by the copepod Lernaea Cyprinacea (Crustacea) - some ecological aspects The copepod Lernaea cyprinacea Linnaeus, 1758 is known by the large spectrum of fish hosts which it infests, and to which it can cause haemorrhages and ulcerations. The paper focuses on some aspects of the relation between the Pumpkinseed sunfish and this copepod: infestation parameters, preferred attaching situs, relationship between the host size and parasitisation degree, as well as the visible effects of this parasite left on the fish body, in the Moara Domnească Lake, Romania.

Antiparasitic potential of alternative treatments against larval stages of Lernaea cyprinacea

2021 ◽  
Author(s):  
William Eduardo Furtado ◽  
Lucas Cardoso ◽  
Paula Brando de Medeiros ◽  
Nicollas Breda Lehmann ◽  
Elisabeth de Aguiar Bertaglia ◽  
...  
Keyword(s):  
Alternative Treatments ◽  
Larval Stages ◽  
Lernaea Cyprinacea

scholarly journals Ichthyological ethnoknowledge of the “piabeiros” from the Amazon region, Brazil

2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Daniel da Silva Ladislau ◽  
Maiko Willas Soares Ribeiro ◽  
Philip Dalbert da Silva Castro ◽  
Jackson Pantoja-Lima ◽  
Paulo Henrique Rocha Aride ◽  
...  
Keyword(s):  
Fish Species ◽  
Local Ecological Knowledge ◽  
Middle Part ◽  
Ornamental Fish ◽  
Ecological Knowledge ◽  
Structured Interviews ◽  
Economic Activities ◽  
Negro River ◽  
Artisanal Fishers ◽  
Ecological Aspects

Abstract Background The capture of ornamental fish is one of the main economic activities of riverine families in the Amazon. However, studies regarding the local ecological knowledge of workers in this activity are still incipient. In view of this, we have studied and explored the local ecological knowledge of artisanal fishers who specialize in the capture of fish for the aquarium trade in the middle part of the Negro River basin and investigated issues related to the ecological aspects of the fish species that are targeted by this trade in the region. Methods Therefore, we conducted semi-structured interviews and applied questionnaires to artisanal fishers of ornamental fish (N = 89), from the municipality of Barcelos, from January to April 2016. Results In total, 41 popular names were cited, which correspond to four ethnocategories and 10 families. The main species were Paracheirodon axelrodi (12.5%), Hemigrammus bleheri (8.3%), Ancistrus dolichopterus (6.4%), Symphysodon discus (5.3%), and Potamotrygon motoro (3.8%). According to the fishers, the species of fish known in the region as “piabas” have a preference for living in clusters (28.9%) and carry out migratory movements (26.1%). The diet of local fish species reported by fisheries is diverse, though mainly based on periphyton (42.2%), and the reproductive cycle directly influenced by the period of flooding of rivers in the region (37.6%) Conclusion Our study revealed that the fishers possess information on the ecological aspects of local ornamental fish species, many of which are consistent with scientific literature. The information presented may assist in the decision-making process for the management of local fishery resources and contribute to the resumption of growth and sustainability in the capture of ornamental fish.

scholarly journals Koi herpesvirus disease in carp

2007 ◽  
Vol 61 (1-2) ◽  
pp. 53-64
Author(s):  
Svetlana Jeremic ◽  
Vladimir Radosavljevic
Keyword(s):  
Water Temperature ◽  
High Mortality ◽  
Channel Catfish ◽  
Fish Ponds ◽  
Koi Carp ◽  
Koi Herpesvirus ◽  
The World ◽  
Diseased Fish ◽  
The Common ◽  
One Year

A disease in the koi carp (Cyprinus carpio koi) and the common carp (Cyprinus carpio carpio), caused by the herpesvirus and accompanied by a high mortality rate, has spread across numerous fish ponds all over the world since 1998, resulting in massive mortality and significant financial losses. The herpesvirus-like virus, called the koi herpesvirus (KHV) has been isolated and identified from the koi and the common carp in the course of the incidences of massive mortalities. The first appearance of a disease with a high mortality in the common and the koi carp caused by the koi herpesvirus (KHV) was described in 1998 in Israel and the United States of America (USA). Since that time, a large number of cases of outbreaks of this disease have been confirmed throughout the world, including the USA, Israel, and a large number of European countries. The deaths occurred seasonally, in late spring or early autumn, when the water temperature was from 18-28?C. The most important factor of the environment that affects the occurrence and gravity of this disease is the water temperature. This disease is currently considered one of the factors that present the biggest threat to populations of the common and the koi carp. Diseased fish are disoriented, their movements uncoordinated, their breathing rapid, gills swollen, and they have local skin lesions. The virus was isolated from tissue of diseased fish and cultivated on a KF-1 (koi fin cells) cell line. Electronic microscopy examinations revealed virus identical viral particles of the Herpesviridae family. Analyses of the virion polypeptide and DNA established differences between the KHV and the previously known herpesvirus of the Cyprinida family, Herpesvirus cyprini (CHV), and the virus of the channel catfish (Channel catfish virus - CCV). In the years 2004 and 2005, high mortality was established among one-year and two-year carp fry on three fish ponds. At two ponds, the deaths occurred among one year and two-year carp fry during the spring period, when the water temperature was over 18?C. During the autumn period, mortality was recorded among one-year carp fry at water temperatures above 23?C. On the grounds of the determined pathomorphological changes and the high mortality during the period of the year when the temperature was above 18?C, we suspect that KHV is also present in fish ponds in Serbia, even though the virus itself has not been isolated. The objective of this work is briefly to present the relevant data on this disease which is inflicting significant losses to carp production, to show the current distribution of this disease, the diagnostic methods, and the possibilities for the prevention and control of KHV.

The community structure of larval fish populations in an area of the Celtic Sea in 1998

2002 ◽  
Vol 82 (4) ◽  
pp. 641-648 ◽  
Author(s):  
S. Acevedo ◽  
O. Dwane ◽  
J.M. Fives
Keyword(s):  
Community Structure ◽  
Fish Species ◽  
Larval Fish ◽  
Single Species ◽  
Coastal Fish ◽  
Larval Stages ◽  
Celtic Sea ◽  
Sea Area ◽  
Insight Into ◽  
Fish Distributions

Ichthyoplankton from an area in the Celtic Sea was studied to provide an insight into the fish larval community structure in March, May and June 1998. Three station groups were defined each month, Neritic, Transition and Oceanic. The Neritic assemblages included larval stages of coastal fish species and the Oceanic assemblages included mesopelagic and high-oceanic fish species which were not recorded from any of the Neritic stations. The Transition stations usually contained species characteristic of both the Neritic and Oceanic assemblages. It is suggested that these broad patterns of larval fish distributions are constant features of the Celtic Sea area, probably related to the spawning location of the adults. The area is, in general, species poor, with the Oceanic stations usually dominated by a single species, indicating the presence of a large spawning school of fish.

scholarly journals Biological Aspects of Juveniles of the Common Stingray, Dasyatis pastinaca (Linnaeus, 1758) (Elasmobranchii, Dasyatidae), from the Central Mediterranean Sea

2020 ◽  
Vol 8 (4) ◽  
pp. 269
Author(s):  
Francesco Tiralongo ◽  
Giuseppina Messina ◽  
Bianca Maria Lombardo
Keyword(s):  
Mediterranean Sea ◽  
Stomach Contents ◽  
Ionian Sea ◽  
Central Mediterranean ◽  
Disc Width ◽  
Ecological Aspects ◽  
Central Mediterranean Sea ◽  
The Common ◽  
Biological Aspects ◽  
Index Value

Data on the biology of Dasyatis pastinaca are absent from the Ionian Sea and only a few studies were conducted in the Mediterranean Sea. Some biological and ecological aspects of D. pastinaca were investigated between November 2019 and February 2020 in the central Mediterranean Sea. In particular, we investigated several morphologic, population and ecological aspects of the species. The analysis of the stomach contents showed that D. pastinaca is a generalist carnivorous, mainly feeding on small crustaceans and polychaetes. The Levin’s index value (Bi) was 0.85. The sex ratio showed no significant differences from 1:1 ratio. Females were larger than males, but no statistical differences were found in disc width-weight and total length-disc width relationships between sexes. Most of the specimens caught were juveniles and inhabit shallow sandy bottoms.

scholarly journals Large variation among photoreceptors as the basis of visual flexibility in the common backswimmer

2014 ◽  
Vol 281 (1795) ◽  
pp. 20141177 ◽  
Author(s):  
Esa-Ville Immonen ◽  
Irina Ignatova ◽  
Anna Gislen ◽  
Eric Warrant ◽  
Mikko Vähäsöyrinki ◽  
...  
Keyword(s):  
Microscopic Analysis ◽  
Physiological Mechanisms ◽  
Absolute Sensitivity ◽  
Prey Animal ◽  
The Common ◽  
Dim Light ◽  
Retinal Structure ◽  
Open Rhabdom ◽  
Better Than ◽  
New Habitats

The common backswimmer, Notonecta glauca , uses vision by day and night for functions such as underwater prey animal capture and flight in search of new habitats. Although previous studies have identified some of the physiological mechanisms facilitating such flexibility in the animal's vision, neither the biophysics of Notonecta photoreceptors nor possible cellular adaptations are known. Here, we studied Notonecta photoreceptors using patch-clamp and intracellular recording methods. Photoreceptor size (approximated by capacitance) was positively correlated with absolute sensitivity and acceptance angles. Information rate measurements indicated that large and more sensitive photoreceptors performed better than small ones. Our results suggest that backswimmers are adapted for vision in both dim and well-illuminated environments by having open-rhabdom eyes with large intrinsic variation in absolute sensitivity among photoreceptors, exceeding those found in purely diurnal or nocturnal species. Both electrophysiology and microscopic analysis of retinal structure suggest two retinal subsystems: the largest peripheral photoreceptors provide vision in dim light and the smaller peripheral and central photoreceptors function primarily in sunlight, with light-dependent pigment screening further contributing to adaptation in this system by dynamically recruiting photoreceptors with varying sensitivity into the operational pool.

scholarly journals Abundance of Оpisthorchis felineus larvae in cyprinid species in the West Kazakhstan Region

2021 ◽  
Vol 15 (2) ◽  
pp. 29-35
Author(s):  
F. Kh. Nurzhanova ◽  
R. S. Karmaliyev ◽  
G. G. Absatirov ◽  
E. M. Sengaliyev
Keyword(s):  
Infection Rate ◽  
Fish Species ◽  
Liver Fluke ◽  
Cyprinid Fish ◽  
Compression Method ◽  
Intensity Of Infection ◽  
The West ◽  
Larval Stages ◽  
Dorsal Fin ◽  
West Kazakhstan

The purpose of the research is studying the abundance of Opisthorchis sp. in cyprinid fish.Materials and methods. Diagnostic studies of fish are aimed at identifying the larval stages of Opisthorchis sp. – metacercariae that are infective for carnivores and humans. We examined 183 specimens of fish that belong to 7 species. The fish were examined by the compression method under an MBS-9 microscope.Results and discussion. The epidemiologically and epizootologically significant fish species in the West Kazakhstan Region are the ide, rudd, roach, bream, tench and silver bream. The infection rate of cat liver fluke metacercariae in these fish species is an indicator of the contamination of the region. The highest prevalence and intensity of infection are recorded in the ide. When studying the age dynamics of fish infected by Opisthorchis sp. metacercariae, we found an increase in infection rate with age. This is the result of a gradual annual accumulation of the parasite in the host. The greatest localization of metacercariae in the fish was observed in the muscles near the dorsal fin where the proportion of accumulated larvae was more than 90%. 

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