Structure and ecological production of the fish taxocene of a small floodplain system

1983 ◽  
Vol 61 (11) ◽  
pp. 2446-2464 ◽  
Author(s):  
Lawrence C. Halyk ◽  
Eugene K. Balon
Keyword(s):  
Species Richness ◽  
Fish Species ◽  
Local Extinction ◽  
Total Production ◽  
Fish Production ◽  
Resource Potential ◽  
Annulus Formation ◽  
Total Fish ◽  
Stream Pool ◽  
Pool Area

Fish species richness in floodplain pools results from species addition by spring invasion from the stream and species subtraction by local extinction throughout the summer. Local extinction is the more important of the two components. Nineteen floodplain pools (1 to 597 m2) and an adjacent section of Irvine Creek (43°44′ N, 80°25′ W), Ontario, Canada, were treated with a piscicide to test if the pools contribute significantly to the resource potential of the river basin. Altogether, 41 626 fishes of 20 species were collected. Number of days of stream connection in the spring was not significantly correlated with fish species richness in the pools (P < 0.10). A significant correlation (P < 0.05, r = 0.7413) was found between species richness and the logarithm of pool area. The total fish production for the Irvine Creek section, adjusted to account for dominant and nondominant species, was 298 kg∙ha−∙year−1. Production for this site was underestimated by 49% when weights and densities were backcalculated to time of annulus formation. Total production estimates of the floodplain pools ranged from 135 to 314 kg∙ha−1∙year−1. Stream connection duration affects pool fish production by regulating accessibility to the young of stream spawning species. Floodplain pools are beneficial to the Irvine Creek system. As nursery areas, floodplain pools produce fish biomass which can return to the stream during periods of stream–pool connection. These pools may also act as fish havens if catastrophic stream mortality occurs.

scholarly journals Fish fauna of small streams of the Catua-Ipixuna Extractive Reserve, state of Amazonas, Brazil

Check List ◽  
2009 ◽  
Vol 5 (2) ◽  
pp. 154 ◽  
Author(s):  
Renildo Ribeiro de Oliveira ◽  
Marcelo Salles Rocha ◽  
Maeda Batista dos Anjos ◽  
Jansen Zuanon ◽  
Lúcia H. Rapp Py-Daniel
Keyword(s):  
Species Richness ◽  
Fish Species ◽  
Fish Fauna ◽  
Conservation Unit ◽  
Extractive Reserve ◽  
Small Streams ◽  
Total Fish ◽  
Amazonas State ◽  
Solimões River ◽  
Hydrographic Network

This study was conducted in an Amazonas state conservation unit, the Catuá-Ipixuna Extractive Reserve (Catuá-Ipixuna RESEX). The main purpose was to provide an ichthyological survey of its small streams, all them tributaries of the Solimões River. Nine small streams (up to 4 m width and 1 m depth) were sampled in September 2006. A total of 1,525 specimens were captured, belonging to 78 species, 24 families and eight orders. Eight species had higher abundances and represented altogether 61.4 % of all collected specimens (Hemigrammus belotii, Microphilypnus amazonicus, Physopyxis ananas, Apistogramma agassizii, Elachocharax pulcher, Apistogramma cf. cruzi, Gladioglanis conquistador and Copella nigrofasciata). Based on the high number of singletons and doubletons present in our samples, as well as the estimated number of species for those streams (106 spp.), we believe that the total fish species richness present in the Catuá-Ipixuna Extractive Reserve may be considerably higher than indicated by our samples. This seems especially true when considering the dimensions of the Catuá-Ipixuna RESEX and the dense hydrographic network present in the area.

scholarly journals Impact of aqua drugs and chemicals on the recoveries of fish diseases and total fish production in Sherpur region of Bangladesh

2016 ◽  
Vol 1 (3) ◽  
pp. 600-606
Author(s):  
Gias Uddin Ahmed ◽  
Mohammad Nurul Alam ◽  
Md Mamunur Rahman
Keyword(s):  
Potassium Permanganate ◽  
Total Production ◽  
Fish Production ◽  
Average Recovery ◽  
Fish Diseases ◽  
Disease Information ◽  
Different Types ◽  
Liver And Kidney ◽  
Total Fish ◽  
The Impact

The present study was conducted to investigate the impact of aqua-drugs and chemicals on fish health and total fish production in Sherpur region, Bangladesh from July 2014 to June 2015. Forty nine different types of aqua-drugs and chemicals were recorded in the study area; among those sixteen types mainly ADDIC drugs and chemicals were widely used by the farmers for treatment of different fish diseases. It was recorded that GR Plus, Active Blue with Copper sulphate, ID Plus, Aqua c vit and H. vit plus were used for the treatment of EUS in Pangus, Shing and Thai koi which had an average recovery of 80-90%. For the treatment of Edwardsiellosis in Pangus and Thai koi, farmers used GR Plus, ID Plus, OTC power, Aqua c vit, H.vit plus and potassium permanganate which had an average recovery of 75-80%, and for the treatment of dropsy in Thai koi and Shing GR Plus, ID Plus, OTC power, Aqua c vit, H.vit plus and potassium permanganate were used which had an average recovery of 75-85%. Histopathology of liver and kidney of fishes were almost normal in control ponds, whereas, in fish organs from drug treated ponds had pathological changes like necrosis, pyknotic cells, hemorrhage, fat droplet, ilets of langerhens, degeneration of kidney tubules and vacuums. Total production of Thai koi, Shing and Pangus was 10,000 kg/acre, 10,000 kg/acre, and 13,000 kg/acre in drugs treated ponds; whereas, such value was 5,000 kg/acre, 4,500 kg/acre and 6,500 kg/acre in non-treaded ponds, respectively in the study areas. In control ponds, mortality rate was comparatively high and production was also low than drugs treated ponds. End of the experiment, it was observed that efficacy of drugs of Aqua Drug and Disease Information Centre (ADDIC) was excellent.Asian J. Med. Biol. Res. December 2015, 1(3): 600-606

Littoral Fish Communities in Southern Quebec Lakes: Relationships with Limnological and Prey Resource Variables

1994 ◽  
Vol 51 (5) ◽  
pp. 1128-1138 ◽  
Author(s):  
Clay L. Pierce ◽  
Joseph B. Rasmussen ◽  
William C. Leggett
Keyword(s):  
Species Richness ◽  
Fish Species ◽  
Yellow Perch ◽  
Fish Communities ◽  
Principal Component ◽  
Lepomis Gibbosus ◽  
Fish Biomass ◽  
Littoral Fish ◽  
Total Fish ◽  
Invertebrate Biomass

We assessed species richness, biomass, and community type of littoral fish in 10 southern Quebec lakes in relation to several limnological and prey resource variables. Lake, yearly, and seasonal variation in biomass was evaluated by quantitative, replicated seining. Species richness averaged 12.8 in our lakes, and 24 species were collected overall. Total littoral fish biomass averaged 13.5 g∙m−2 overall and varied significantly among lakes (range 6.1–26.9 g∙m−2) and between early and late summer. Yellow perch (Perca flavescens), golden shiner (Notemigonus crysoleucas), and pumpkinseed (Lepomis gibbosus) occurred in all lakes and were the most abundant species overall, averaging 57% of the total fish biomass. Principal component ordination of littoral fish communities showed little evidence for aggregation of community types. Species richness was positively correlated with lake surface area (r2 = 0.62), as has been shown in other studies. Total fish biomass was positively correlated with biomass of chironomids (r2 = 0.57), which constituted 24% of the littoral invertebrate biomass in our lakes and are important prey of many fish species. We found no significant correlation between total fish biomass and total invertebrate biomass or between biomass of any of the dominant fish species and limnological or prey variables.

scholarly journals RELATIONSHIP BETWEEN CHLOROPHYLL-A AND SEA SURFACE TEMPERATUR WITH Sardinella lemuru CATCHING IN BALI STRAIT

2021 ◽  
Vol 15 (1) ◽  
pp. 12
Author(s):  
Niken Gustantia ◽  
Takahiro Osawa ◽  
I Gusti Bagus Sila Dharma ◽  
Wayan Sandi Adnyana
Keyword(s):  
Chlorophyll A ◽  
Sea Surface ◽  
Fishing Ground ◽  
Fish Production ◽  
Resource Potential ◽  
Chl A ◽  
Remote Sensing Technique ◽  
Fish Resources ◽  
Fish Catch ◽  
Total Fish

The Bali Strait is one of Indonesia's territorial waters that have high natural resource potential. The area is only about 2,500 km2 but has a high potential fishing ground. The Bali Strait has unique and dynamic waters that can cause fluctuations in fish production amount each year. The largest type of fish caught in the Bali Strait is lemuru (Sardinella lemuru), a fish found only in the Bali Strait. This fish plays a significant role in the economy of fishers in the Bali Strait. Each year the catch of lemuru has fluctuated, making fishing locations challenging to predict. Sea Surface Temperature (SST) and Chlorophyll-a (Chl-a) are oceanographic parameters that can affect the resources of the ocean. Oceanographic phenomena, such as upwelling, can also influence the condition of fish resources. Therefore, understanding the relationships between these factors is essential in practical fisheries management. Observation of oceanographic factors is very hard with the field observation due to time and cost limitations. The remote sensing technique is an efficient method to determine SST distributions and Chl-a concentrations using satellite imagery. This study analyzes SST and Chl-a concentration in the Bali Strait using the Global Change Observation Mission(GCOM-C) satellite and determines the correlation between Chl-a and SST with a total fish catch(lemuru) during 2019. The results showed the maximum average Chl-a concentration observed on August 1.62 mg/m3 and the lowest concentration observed on January 0.45 mg/m3, the maximum SST on March was 28.12° C, and on August (Dry season) with 22.40° C. The SST variable's influence provides a negative correlation (R = -0.209) with changes in lemuru catch, while the Chl-a parameter has a positive correlation (R = 0.375) with changes in the catch. The pattern of relationship between Chl-a with fish catching had a good relationship than the SST in 2019.Keywords: Bali Strait; Sardinella lemuru; SST; Chl-a.

scholarly journals Change in Fishing Patterns in Jammu & Kashmir Provinces of J&K – A Comparative Study

2015 ◽  
Vol 10 (1) ◽  
pp. 179-183
Author(s):  
Imtiyaz Qayoom ◽  
Masood Balkhi ◽  
Bilal Bhat
Keyword(s):  
Fish Species ◽  
Statistical Models ◽  
Cold Water ◽  
Growth Patterns ◽  
The State ◽  
Production Data ◽  
Total Production ◽  
Fish Production ◽  
Important Species ◽  
Future Production

Jammu and Kashmir serves a congenial habitat for variety of fish species due to large number of cold water resources which has paved way for the development of fisheries sector in the state. The state has crossed 20.0 thousand tonnes of fish production because of modern aquacultural practices implied at both governmental and private levels. Kashmir province is a leading producer of fishes contributing more than 80% of the total production of the state while as Jammu on the other hand has also emerged as a major producer of animal protein through fisheries sector. The fish production data of four decades reflects increasing trend of production in all commercially important species of both the provinces. However the statistical models forecasting the future production provide an idea about the growth patterns in fishes. In this paper, growth pattern of three different fish species (Trout, Mirror carp and Country fish) from Kashmir province and various fishes from Jammu province (collectively named as Jammu fish) of the state was assessed using fish production data from 1956-57 to 2011-12. Forecasting of fish production was made on the basis of the best fitted statistical models. Results showed that Kashmir province shows overall compound growth of 4.2% against 7.9% of increased compound growth rate of fish production of Jammu province since 1956-57. Cubic model was found to be the best fitted model for all the species in both the regions. However, when future fish production of the state is taken into consideration, the statistical models indicated a decreasing trend in the overall fish production of both the provinces. Besides, the matter of concern is that the demand of 70,000 thousand tonne consumption of fish protein in the state which is a milestone yet to be achieved.

scholarly journals Sanctuary Status on Diversity and Production of Fish and Shellfish in Sunamganj Dekar Haor of Bangladesh

2019 ◽  
Vol 45 (2) ◽  
pp. 175-186
Author(s):  
MS Islam ◽  
Afzal Hossain
Keyword(s):  
Species Diversity ◽  
Fish Species ◽  
Positive Impact ◽  
Fish Population ◽  
Indigenous Species ◽  
Fish Production ◽  
Secondary Sources ◽  
Percent Contribution ◽  
Total Fish ◽  
Fish And Shellfish

To ascertain the sanctuary status on diversity and production of fishes data were collected through primary and secondary sources. A total of 64 species belonged to 48 genera including fish (57), freshwater prawns (2), crabs (1) and mollusks (4) were recorded. Of 57 fish species, 52 were indigenous and rest 5 exotic, which belonged to 9 orders and 24 families. Cypriniformes was the most dominant order with 33.33% of total fishes followed by Perciformes (24.56%), Siluriformes (22.81%), Channiformes (7.03%) and both Osteoglossiformes and Clupeiformes (3.51%). Rest orders showed comparatively less percentage. Cyprinidae occupied the highest position (29.82%) in fish population among recorded families. By percent contribution small indigenous species showed the highest contribution (38.86%) with the highest amount (1936.50 kg/ha) in total fish production than other groups. Average fish production in sanctuaries obtained as 4983.60 kg/ha, which is manifolds higher than haor fish production (408 kg/ha) in Bangladesh. Fifteen (15) fish species were found as threatened and categorized them into critically endangered (1), endangered (8) and vulnerable (6). Results of the study reveal that sanctuary has positive impact on diversity and production of fishes in the haor. Therefore, it may be concluded that restoration of threatened species, diversity of flora and fauna, and overall fish production may be increased in wetlands by establishing sanctuary. Asiat. Soc. Bangladesh, Sci. 45(2): 175-186, December 2019

scholarly journals On the management of single fish species of hilsa shad (Tenualosa ilisha) resources of Bangladesh

2019 ◽  
Vol 47 (1) ◽  
pp. 173-183
Author(s):  
M Nath Sarker ◽  
M Niamul Naser ◽  
Md Sharif Uddin ◽  
N Nanda Das ◽  
Md Humayun
Keyword(s):  
Fish Species ◽  
Growth Parameters ◽  
Growth Function ◽  
Fishing Effort ◽  
Age And Growth ◽  
Fish Production ◽  
Migratory Fish ◽  
The Family ◽  
Total Fish ◽  
Tenualosa Ilisha

Hilsa shad (Tenualosa ilisha) belonging to the family Clupeidae is a diadromous migratory fish species. It is an important fish in the countries bordering to the Bay of Bengal. Bangladesh harvest about 60% of world hilsa catch. Hilsa contributed12.9% of the country’s total fish production in 2017-2018 with an estimated annual production of 517,198 tons, which was 1.0% to the GDP to support livelihoods of 1.2 million hilsa fishers of Bangladesh. In spite of the importance, there was an alarming situation in hilsa production, where over fishing of hilsa with a result of decline in inland production were observed. In the present study age and growth parameters L=57.7 cm total length and growth rate K=0.90 per year were calculated using VBGF growth function. Population parameters Z=4.90 were calculated using length converted catch curve, M (at water temperature 27°C) =1.45 using Pauly’s formula, F=1.09 and E=70 were estimated. Results indicates both recruitment overfishing and growth over fishing occur through indiscriminate fishing of juvenile hilsa (Jatka) as wel as brood hilsa(mother). Fishing effort has to be reduced at any cost and the affected fishers should be rehabilitated in a proper manner for obtaining the sustainable production of hilsa resources. Bangladesh J. Zool. 47(1): 173-183, 2019

scholarly journals Production Trends, and Challenges for Biodiversity Conservation and Sustainable Fisheries Management of Kaptai Lake, the Largest Reservoir in Bangladesh

2021 ◽  
Vol 34 (2) ◽  
Author(s):  
KAMRUL HASSAN SUMAN ◽  
MD SHAKHAWATE HOSSAIN ◽  
MOHAMMAD ABDUS SALAM ◽  
QUAZI SUNJIDA SHAWKET RUPOK ◽  
MD NIAMUL HAQUE ◽  
...  
Keyword(s):  
Fisheries Management ◽  
Fish Species ◽  
Open Water ◽  
Fish Diversity ◽  
Small Fish ◽  
Total Production ◽  
Fish Production ◽  
Management Scenarios ◽  
Exotic Fish ◽  
Artificial Lake

Kaptai Lake (KL), the largest artificial lake in Bangladesh, supports an important inland open water fishery. Nevertheless, detailed studies on its fish diversity and environmental threats are still limited. Hence, a study was conducted to evaluate the current fish management scenarios, fish production, relative abundance to improve the production and biodiversity of KL. Data were collected from stakeholders through personal observation, focus group discussions, and cross-check interviews from September 2018 to July 2019. The fish production of KL increased from 1,200 metric tons (MT) in 1965–1966 to 10,577 MT in 2018–2019. The output of the lake was dominated by small fish remarkably, Gudusia chapra (Hamilton, 1822), Gonialosa manmina (Hamilton, 1822), and Corica soborna Hamilton, 1822, accounting for 64 % of the total production in 2018–2019. A total of seventy-six fish species were observed under ten orders, including seven exotic fish species. According to the IUCN Bangladesh, 14 % of total species were identified as vulnerable, 11 % as endangered, 3 % as critically endangered, 11 % as near threatened and 51 % as least concern. The study also identified that climate change and various human-driven causes threaten the fish production and biodiversity of this lake. These findings suggest that community-based fisheries management, protection of natural breeding grounds of carps, control of pollution, amendment of existing fishing laws, and collaborative research would be a necessary approach for mitigating the negative environmental impact of this lake. The overall practical knowledge of this investigation could assist in policymaking and further research.

Linking fish and crustacean taxonomic composition with seasonal contrasts in the soft-bottom intertidal zone

2020 ◽  
Author(s):  
M. A. Gondal ◽  
S. Iqbal ◽  
U. Atique ◽  
N. U. Saher ◽  
N. A. Qureshi ◽  
...  
Keyword(s):  
Species Richness ◽  
Water Temperature ◽  
Fish Species ◽  
Diversity Index ◽  
Taxonomic Composition ◽  
Primary Objective ◽  
Negative Effect ◽  
Fish Species Composition ◽  
One Year ◽  
Sw Monsoon

Abstract The primary objective of this study was to investigate the seasonal fish and crustacean variations concerning taxonomic composition, species richness, and diversity in sandy beach habitat. For this purpose, we investigated the Sonmiani Hor lagoon area during four distinct seasons, i.e., northeast (NE) monsoon, pre-monsoon, south-west (SW) monsoon, and post-monsoon for one year. During each haul, the net was pulled about 100m along the beach in 0.5m depth. The results showed a strong linear correlation between the diversity index and equitability in fishes (r = 0.978). The diversity index was strong negatively correlated with the abundance and biomass (r = -0.978, -0.972, respectively). The physical attributes like sea surface water temperature and salinity showed a strong negative effect on species assemblages (r = -0.981 and -0.943, respectively). The mean air and water temperature illustrated approximately 3°C difference during NE and pre-monsoon seasons. However, salinity, pH, and electrical conductivity did not show any significant seasonal variabilities. Under the ecological indices, the fish species displayed higher diversity (H’ = 3.19) during SW monsoon, whereas the lowest diversity was observed during pre-monsoon (H’ = 1.58). The equitability and species richness, however, remained more noticeable during SW monsoon (J’ = 0.81). The total number of individuals of fish and crustaceans reached 4799 with 3813 fish individuals and 986 individuals of crustaceans. A total of 27 families of fish while five crustacean families comprising of 30 genera and 38 fish species while ten genera and 17 species of crustaceans were recorded. Liza subviridis displayed the highest abundance among the sampled fish species. In conclusion, fish species constituted a significant part of the coastal fauna in the study area. The seasonal variations displayed distinct variations in fish species composition and diversity.

Patterns of fish species richness in the Seine River basin, France

Hydrobiologia ◽  
1993 ◽  
Vol 259 (3) ◽  
pp. 157-167 ◽  
Author(s):  
Thierry Oberdorff ◽  
Eric Guilbert ◽  
Jean-Claude Lucchetta
Keyword(s):  
Species Richness ◽  
River Basin ◽  
Fish Species ◽  
Seine River ◽  
Seine River Basin
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