The comparison of two different extenders for the improvement of large‐scale sperm cryopreservation in common carp ( Cyprinus carpio )

2018 ◽  
Vol 54 (3) ◽  
pp. 639-645 ◽  
Author(s):  
Levente Várkonyi ◽  
Zoltán Bokor ◽  
József Molnár ◽  
Ferenc Fodor ◽  
Zsolt Szári ◽  
...  
Keyword(s):  
Common Carp ◽  
Cyprinus Carpio ◽  
Large Scale ◽  
Sperm Cryopreservation ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio

scholarly journals Assessment of ovulation of common carp (Cyprinus carpio) females selected for induced spawning on the basis of external morphological characteristics

2000 ◽  
Vol 48 (1) ◽  
pp. 1-8
Author(s):  
R. Szabó ◽  
T. Szabó ◽  
B. Urbányi ◽  
L. Horváth
Keyword(s):  
Common Carp ◽  
Cyprinus Carpio ◽  
Egg Production ◽  
Large Scale ◽  
Morphological Characteristics ◽  
Secondary Sexual Characteristics ◽  
Induced Spawning ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio ◽  
Sexual Characteristics

Secondary sexual characteristics such as softening and rounding of the abdomen as well as reddening and protrusion of the anal papilla and vent can be of help to breeders in selecting common carp (Cyprinus carpio) females prepared for propagation. To assess the reliability of this method, long-term data obtained on induced spawning of common carp at a large-scale fish hatchery were evaluated. The average spawning ratio of 2,620 females receiving hormonal injections was 79.8%. The average pseudogonadosomatic index (PGSI) calculated from data on the egg production of 2,086 females was 16.3 ± 5.87% (mean ± SD) for the same period. There was a correlation between fish weight and the time of induction determined by the breeder on the basis of external morphological characteristics. The similarity of the responses of females, including both spawning ratio and PGSI, among the different weight categories proved the reliability of this method for identification.

scholarly journals Growth Performance and Feed Efficiency Assessment of Two Groups of Common Carp (Cyprinus carpio L.) Cultivated in Iraq

2020 ◽  
Vol 33 (1) ◽  
pp. 189-199
Author(s):  
Kadhim O.M. Al-Humairi ◽  
Riyadh A. Al-Tameemi ◽  
Sajed S. Al-Noor
Keyword(s):  
Growth Performance ◽  
Common Carp ◽  
Cyprinus Carpio ◽  
Feed Efficiency ◽  
Large Scale ◽  
The Body ◽  
Apparent Digestibility ◽  
Feed Conversion ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio

Laboratory experiments were conducted to compare the growth performance and feed efficiency of two groups, old (H1) and new (H2) of common carp Cyprinus carpio L. (97.37+0.33 g). Fishes of the H1 introduced to Iraq in 1982 and then their reproduction and farming began on a large scale, while fishes of the H2 was introduced to Iraq in 2009 by Inmaa Agricultural Enterprises Organization. H2 group indicated significantly (p<0.05) better performance in several studied parameters which included specific growth rate (SGR), feed conversion ratio (FCR), protein efficiency ratio (PER), protein productive value (PPV), total apparent digestibility and apparent digestibility of protein and carbohydrates. This group also recorded significant (p<0.05) lower feed satiation level and fat deposited in the body compared to the old group (H1). Results of the current experiment concluded that there is a clear higher efficiency of the group H2 in most studied growth and feed efficiency parameters, which indicates the possibility of obtaining higher productivity and better economic profits when used in farming activities.

Improvement of common carp (Cyprinus carpio) sperm cryopreservation using a programable freezer

2016 ◽  
Vol 237 ◽  
pp. 78-88 ◽  
Author(s):  
Gergely Bernáth ◽  
Daniel Żarski ◽  
Eszter Kása ◽  
Ádám Staszny ◽  
Levente Várkonyi ◽  
...  
Keyword(s):  
Common Carp ◽  
Cyprinus Carpio ◽  
Sperm Cryopreservation ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio

Large, regulated forest floodplain is an ideal recruitment zone for non-native common carp (Cyprinus carpio L.)

2006 ◽  
Vol 57 (3) ◽  
pp. 333 ◽  
Author(s):  
Ivor G. Stuart ◽  
Matthew Jones
Keyword(s):  
Common Carp ◽  
Cyprinus Carpio ◽  
Large Scale ◽  
Environmental Water ◽  
Control Measures ◽  
Native Fish ◽  
Migration Routes ◽  
Common Carp Cyprinus Carpio ◽  
Murray River ◽  
Carp Cyprinus Carpio

Non-native common carp (Cyprinus carpio L.) are the most abundant large-bodied fish in the Murray–Darling Basin. The abundance of common carp larvae and young-of-the-year appears to increase after flooding, although the relative contribution of floodplain habitats compared to riverine areas remains unresolved. Larval nets were used monthly from September 2000 to January 2001 to identify common carp spawning and recruitment areas in the regulated Murray River and floodplain around the Barmah–Millewa forest. Five non-native and five native fish species comprising 136 111 individuals were collected, with common carp constituting 88% of the overall catch. Less than 1% of common carp, however, originated from the Murray River upstream of the Barmah–Millewa floodplain. Consequently, this floodplain appears to be a major source of common carp recruitment in the mid-Murray area. Conversely, eggs from large-bodied native fish were only present in the Murray River and not the Barmah floodplain. There are opportunities for common carp control in this area, to potentially reduce populations in a wider river reach. Implementation of common carp control measures in the Barmah–Millewa floodplain should be further investigated, particularly with regard to seasonal irrigation flows, obligatory migration routes and in the timing of future large-scale environmental water allocations.

Ecological effects of common carp (Cyprinus carpio) in a semi-arid floodplain wetland

2014 ◽  
Vol 65 (9) ◽  
pp. 802 ◽  
Author(s):  
Lorenzo Vilizzi ◽  
Leigh A. Thwaites ◽  
Benjamin B. Smith ◽  
Jason M. Nicol ◽  
Chris P. Madden
Keyword(s):  
Common Carp ◽  
Cyprinus Carpio ◽  
Large Scale ◽  
Experimental Studies ◽  
Benthic Invertebrate ◽  
Common Carp Cyprinus Carpio ◽  
Zooplankton Density ◽  
Eastern Australia ◽  
Carp Cyprinus Carpio ◽  
Semi Arid

Common carp, Cyprinus carpio, is a highly invasive fish species across freshwater systems of south-eastern Australia, and especially in semi-arid floodplain wetlands. However, multi-component, large-scale experimental studies on carp effects on such ecosystems are scarce. This is in spite of demands to prioritise management and control of carp for the rehabilitation of habitats across the Murray–Darling Basin. A 2-year, large-scale field experiment in a terminal wetland of the lower River Murray (South Australia) evaluated the effects of free-ranging carp on water transparency, aquatic macrophytes (biomass and cover), zooplankton density, benthic invertebrates (density, richness and diversity) as well as native fish. Within 1 year since artificial inundation, transparency sharply decreased and this was accompanied by a decrease in aquatic macrophyte biomass and cover, a fluctuation in zooplankton density, and a decrease in benthic invertebrate richness and diversity. Also, the decreases in transparency and benthic invertebrate richness were significantly related to carp biomass, which averaged 68.0 kg ha–1 and induced a shift from clear- to turbid-water state. Following a flood event, increased connectivity caused carp to further access the newly inundated areas.

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