Population biology of carp (Cyprinus carpio L.) in the mid-Murray River and Barmah Forest Wetlands, Australia

2005 ◽  
Vol 56 (8) ◽  
pp. 1151 ◽  
Author(s):  
Paul Brown ◽  
K. P. Sivakumaran ◽  
Daniel Stoessel ◽  
Annie Giles
Keyword(s):  
Cyprinus Carpio ◽  
Population Biology ◽  
Stock Assessment ◽  
Management Strategies ◽  
Total Mortality ◽  
Pest Species ◽  
Average Growth ◽  
Murray River ◽  
Carp Cyprinus Carpio ◽  
Potential Pest

The present study quantitatively describes a significant stock of carp (Cyprinus carpio L.), an exotic pest species, in a temperate riverine floodplain wetland. Intensity and duration of flooding influenced relative abundance, distribution and recruitment. Average growth (mm) in length was described with the von Bertalanffy growth model for males (L∞ = 489, k = 0.249, t0 = –0.519), and females (L∞ = 594, k = 0.177, t0 = –0.609) to age 28. Variation in growth was described with a lognormal distribution of k. Total mortality (Z year–1) was 0.268–0.407 for males, 0.311–0.422 for females, 3.24 for age-0 juveniles and 1.80 for age-1 juveniles. Natural mortality (M year–1) was 0.199 for males and 0.262 for females. Fishing mortality (F year–1) was <0.05 for males and 0.11–0.30 for females. Gonadal changes indicated extended spawning seasons peaking in September 1999 and October 2000. Median sizes and ages at initial maturation were 307 mm, 584 g and 1.1 years for males and 328 mm, 688 g and 2.7 years for females. Sex ratio varied significantly with age from equal as juveniles to a significant male-bias as adults. This description will enable better stock assessment and development of simulations that evaluate potential pest management strategies.

scholarly journals Biocontrol of the Common Carp (Cyprinus carpio) in Australia: A Review and Future Directions

Fishes ◽  
2020 ◽  
Vol 5 (2) ◽  
pp. 17
Author(s):  
Kenneth A McColl ◽  
Agus Sunarto
Keyword(s):  
Common Carp ◽  
Cyprinus Carpio ◽  
Invasive Plant ◽  
Control Measure ◽  
Invasive Pest ◽  
Pest Species ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio ◽  
The Common ◽  
Broad Scale

Invasive pest species are recognized as one of the important drivers of reduced global biodiversity. In Australia, the 267 invasive plant, animal and microbial species, established since European colonization in the 1770s, have been unequivocally declared the most important threat to species diversity in this country. One invasive pest, the common carp (Cyprinus carpio), has been targeted in an integrated pest management plan that might include cyprinid herpesvirus 3 (CyHV-3) as a potential biocontrol agent. The species-specificity of the released virus (and of field variants that will inevitably arise) has been assessed, and the virus judged to be safe. It has also been hypothesised that, because the virulence of the CyHV-3 will likely decline following release, the virus should be used strategically: initially, the aim would be to markedly reduce numbers of carp in naive populations, and then some other, as yet uncertain, complementary broad-scale control measure would knock-down carp numbers even further. Brief results are included from recent studies on the modelling of release and spread of the virus, the ecological and social concerns associated with virus release, and the restoration benefits that might be expected following carp control. We conclude that, while further work is required (on the virus, the target species, environmental issues, and especially the identification of a suitable broad-scale complementary control measure), optimism must prevail in order to ensure an eventual solution to this important environmental problem.

Vital demographic statistics and management of the baldchin groper (Choerodon rubescens) from the Houtman Abrolhos Islands

2006 ◽  
Vol 57 (5) ◽  
pp. 485 ◽  
Author(s):  
Kim Nardi ◽  
Stephen J. Newman ◽  
Michael J. Moran ◽  
Geoffrey P. Jones
Keyword(s):  
Marine Protected Areas ◽  
Stock Assessment ◽  
Management Strategies ◽  
Gonad Development ◽  
Total Mortality ◽  
Instantaneous Rate ◽  
Mobile Species ◽  
Discard Mortality ◽  
Aggregation Behaviour ◽  
Houtman Abrolhos Islands

In order to evaluate appropriate management strategies, the life history and demography of the baldchin groper (Choerodon rubescens) was examined from speared samples and commercial catches at the Houtman Abrolhos Islands, Western Australia. Ages were estimated from sections of sagittal otoliths, validated by oxytetracycline labelling of fish recaptured after a minimum of 12 months at liberty. Male C. rubescens (n = 147; 373–639 mm) ranged from ages 5 to 20 years, and females (n = 354; 226–610 mm) ranged from 2 to 13 years. The population underwent a transition in dominance from females to males at age 11–12 years and 500–550 mm total length. Gonad development was seasonal and spawning was evident from spring to summer (September–January), with evidence of aggregation behaviour. Indirect estimates of the annual instantaneous rate of natural mortality (M) ranged from 0.05 to 0.58 and total mortality (Z), ranged from 0.21 to 0.56, rendering stock assessment highly uncertain. The limited geographic range, slow growth, long potential life span, protogynous sex change, aggregative spawning and high discard mortality rates render C. rubescens susceptible to overfishing. In order to manage this mobile species successfully, marine protected areas must continue to be supplemented by strict catch controls in fished areas.

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.

Hormonally stimulated gluconeogenesis in the carp, Cyprinus carpio

1988 ◽  
Vol 117 (4_Suppl) ◽  
pp. S222-S223 ◽  
Author(s):  
A. GERHARD ◽  
P. GOHLKE ◽  
W. HANKE
Keyword(s):  
Cyprinus Carpio ◽  
Carp Cyprinus Carpio
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