Current State of Fisheries and Assessment of Fish Stocks in the Western Middle of the Caspian Sea. Prospects for the Use of the Fish Resources

Абдусамадов, С.; Гусейнова, А. Ф.; Дудурханова, А.

doi:10.18470/1992-1098-2016-2-70-83

Cited by 5 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Apparently, one of the reasons for such a limited size range of pike-perch prey is that it has a limited gape, usually consuming prey no longer than 50% of its own length in central Europe [69][70][71][72], which was similar to our data.…”

Section: Discussionsupporting

confidence: 90%

“…This study was carried out to probe the feeding habits and diet of Sander lucioperca juveniles and adults in different habitats of the western Caspian Sea. The main aim of the study was to describe the diet, frequency of occurrence of different food items in the stomach, monthly changes in diet, feeding intensity, and feeding in relation to fish size and age due to a lack of such studies in the biogeographical research area [65][66][67][68][69][70][71].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Low Ontogenetic Diet Diversity and Flexibility of the Pike-Perch, Sander lucioperca (Linnaeus, 1758) (Osteichthyes, Percidae): A Case Study

Alieva,

Nasibulina,

Bakhshalizadeh

et al. 2023

Fishes

View full text Add to dashboard Cite

This study reveals the diet of pike-perch from two habitats within the Tersko-Caspian region. The feeding habits of pike-perch in the Sulak and Terek rivers and Tersko-Caspian region were investigated based on 354 specimens sampled monthly from a commercial catch in 2019. Their diet consisted of different prey, with fish representing the most important prey group (up to 90%). Rutilus caspicus dominated with a frequency of occurrence of 20.5, and Aspius aspius, Perca fluviatilis, and Chondrostoma oxyrhynchum, had 13, 9.5, and 8.3%. In the earlier ages 1+ and 2+, zooplankton dominated, followed by mysids and chironomids, which continues into the older ages but at decreasing rates. Analysis of monthly variations in stomach fullness indicated that feeding intensity fluctuated in time, with the highest values in March–April, and lowest in September and November. It was found that the diet of pike-perch in the western Caspian changed considerably from season to season. They begin to actively feed after wintering and before, or even during, spawning period. The spectrum of the diet of Sander lucioperca includes more than 20 elements, mainly juveniles of commercially valuable fish. This fish is characterized by a relatively low ontogenetic diet diversity and flexibility, which makes it sensitive to environmental changes, including anthropogenically induced ones. This fish partially compensates for this disadvantage with its lifestyle, namely, its active foraging movements and migrations from fresh water to salt water and back, following its prey species.

show abstract

Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

The Low Ontogenetic Diet Diversity and Flexibility of the Pike-Perch, Sander lucioperca (Linnaeus, 1758) (Osteichthyes, Percidae): A Case Study

Alieva,

Nasibulina,

Bakhshalizadeh

et al. 2023

Fishes

View full text Add to dashboard Cite

show abstract

“…State and Federal police, and border control services also participate in fisheries‐related law enforcement. Legal fisheries (working under state management) operate offshore and in rivers, targeting native species of Cyprinidea (carp) , Siluridae (catfish) and Esocidae (pike) and introduced Mugilidae (mullet) for food (Abdusamadov et al, 2016; Karpinsky, 2005), with the fish traded locally and regionally. These fisheries use small, open, aluminium and wooden boats of 4–8 m, and employ gillnets with mesh size up to 90 mm.…”

Section: Methodsmentioning

confidence: 99%

Stakeholder consensus suggests strategies to promote sustainability in an artisanal fishery with high rates of poaching and marine mammal bycatch

et al. 2023

View full text Add to dashboard Cite

1. Illegal fishing for high value species in artisanal fisheries drives incidental catch and declines of marine mammals and other large vertebrates of conservation importance around the world. Engaging with stakeholders is essential to understand which strategies will be effective in motivating the development of more sustainable practices, and disengagement from illegal fisheries.2. Here we present the results of a Q study carried out in autumn 2018 with 50 stakeholders from the Caspian Sea coast of Dagestan (Russian Federation), including fishers illegally targeting sturgeon (Acipenseridae) and Caspian seals Pusa caspica, traders and fisheries managers. We assess viewpoints on biodiversity governance; illegal, unreported and unregulated (IUU) fishing; illegal wildlife trade (IWT) and conservation.3. Three distinct viewpoint groups emerged from a factor analysis, which we designated as 'Nostalgists', 'Optimists' and 'Pessimists'. Nostalgists were concerned with decline in environmental quality, and emphasised a need for increased centralised involvement of authorities reminiscent of the old Soviet system. Optimists expressed support for a well-regulated legal fisheries sector, while Pessimists were very aware of the negative impact of illegal fisheries and IWT, but felt they could not be controlled.4. Among all groups we found a strong desire for alternative livelihoods (ALs), improved sustainability and agreement on the potential effectiveness of marine protected areas (MPAs) and increased regulation, even if some stakeholders felt they were not achievable goals. 5. We used our results to inform three workshops in which Dagestani fishers and fishery experts discussed potential conservation interventions, and the barriers to their implementation. Six action types were identified including enhanced law enforcement, increased regulation, protected areas, alternative livelihoods,

show abstract

Pecularities of reproduction and growing of young Russian sturgeon in the conditions of the dagestan fish factory

Kadiev,

Basiyat,

Aliev

et al. 2023

Modern Approaches in Engineering and Natural Sciences: Maens-2021

View full text Add to dashboard Cite

Current State of Fisheries and Assessment of Fish Stocks in the Western Middle of the Caspian Sea. Prospects for the Use of the Fish Resources

Cited by 5 publications

References 0 publications

The Low Ontogenetic Diet Diversity and Flexibility of the Pike-Perch, Sander lucioperca (Linnaeus, 1758) (Osteichthyes, Percidae): A Case Study

The Low Ontogenetic Diet Diversity and Flexibility of the Pike-Perch, Sander lucioperca (Linnaeus, 1758) (Osteichthyes, Percidae): A Case Study

Stakeholder consensus suggests strategies to promote sustainability in an artisanal fishery with high rates of poaching and marine mammal bycatch

Pecularities of reproduction and growing of young Russian sturgeon in the conditions of the dagestan fish factory

Contact Info

Product

Resources

About