Assessment of Abundance, Diversity and Distribution of Freshwater Fishes of Tropical Rainforest Rivers, Southeast Nigeria

Adaka, G. S.

doi:10.9734/bpi/nvbs/v7/5282f

Cited by 3 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also Ataguba et al (2014) observed S. galilaeus as the most abundant species in Gubi Dam, Bauchi State of Nigeria. The result disagrees with the fish species diversity reported by Adaka et al (2014) [7] and Ibim and Owhonda (2017) [17] with similar result of high Cichlid diversity in the New Calabar River of Nigeriia. Abubakar et al, (2005) [6] reported Oreochrornis niloticus as the most abundant species in Lake Geriyo, Abdullahi (2005) [1] reported high species abundance of Sarotherodon galileaus.…”

Section: Resultscontrasting

confidence: 99%

“…Indeed monitoring the status and trends of freshwater biodiversity is essential to quantify impacts of human activities on freshwater systems and to improve freshwater biodiversity conservation. According to Adaka et al, (2014) [7] environmental awareness to educate the fishers and other stakeholders on the danger of extinction of the species and the need for its conservation was necessary. Similarly, (Ude et al, 2011) [27] stated that detailed knowledge of the function of the river system and the responses of fish species are needed for effective fisheries management planning.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Studies on fish species diversity, abundance and Distributon along Onitsha axis of River Niger, Anambra State of Nigeria

PA,

JA,

OOC

et al. 2023

IJMRGE

View full text Add to dashboard Cite

A study on biodiversity, abundance and distribution was carried out in Onitsha Axis of River Niger in Onitsha North and South Local Government Area, Anambra State, Nigeria for a period of three months. The area was partitioned into Station I (Emejuru), Station II (Bridge Head) and Station III (Akpaka). Fish samples were collected weekly from July to September, 2019 with the aid of fisher folks using gill nets, cast nets, hook and lines and local traps. The results showed a total composition of 4,645 individuals belonging to 15 families and 31 species. Momyridae showed significance (p<0.05) species diversity with seven (7), followed by Bagridae (5) spp. with the remaining 13 families having one and two spp. Station III Akpaka recorded the highest fish diversity of 37%, followed by Station I Emejuru 34% and Station II Bridge head 29%. In terms of species abundance, Bagrus bayad 13.9% >bagrus docmak 8.8% >Chryschythys Nigrodigitatus7.2% >Bargus filamentous 4.5% >Malapters electricus 4.4% >Heterotis niloticus 4.0% >Orochromis niloticus 3.8% >Mormyrus macrophatalmus 3.3%) recorded the highest, followed by Heterobranchus bidorsalis, Mormyrus rume, Mormyrus tarpirus, Mormyrus senegalensis, Schibe mystus Synodontis clarias and Cithrinus citharus had 2.2%, 2.3%, 3.0%, 1.7%, 2.9%, 1.6% and 3.2% respectively, and Hypothermirus pissitacus the least with 0.4%. This research shows that the Onitsha axis of the River Niger is still rich in fish species diversity and abundance; hence concerted efforts should be made by the various government agencies to see that laws guiding the proper use of water bodies are enforced in the Onitsha axis of the River Niger, to enhance economics, conservation and sustainability.

show abstract

Section: Resultscontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Studies on fish species diversity, abundance and Distributon along Onitsha axis of River Niger, Anambra State of Nigeria

PA,

JA,

OOC

et al. 2023

IJMRGE

View full text Add to dashboard Cite

show abstract

“…The check list of the encountered fish species during the study period is presented in Table 1.Cichlidae was observed to record the highest percentage abundance during the study with abundance count of 780 (83.3%), the other fish families showed the following abundance: Notopteridae 63(6.7%), Clarotidae 36(3.8%), Alestidae 39 (4.2%), Hepsidae 4(0.4), Mormyridae 10(1.1%), Gymnarchidae 1 (0.1%), Channidae 1 (0.1%), Cyrinidae 2 (0.2%). The dominance of cichlid fishes agrees with what is obtained in many other lakes and reservoirs in Nigeria [10]. The dominance of this family in terms of species diversity, number and weight could be attributed to the presence of high food resource such as plankton [11] and their prolific breeding capabilities.…”

Section: Fish Composition and Diversitysupporting

confidence: 85%

“…The species composition is lower than the results of other studies in other water bodies. Adaka, et al, [12] with 32 species and 18 families from Oguta lake; Lowe-McConnell, [13] encountered 44 species on the Rapennine River. Okereke [7] in her study of Otamiri River, Imo State recorded 46 species in 20 families.…”

Section: Fish Composition and Diversitymentioning

confidence: 99%

“…Other comparable study results include; Nwadiaro [11] 98 species from Oguta lake. Abowei, [14] 36 species from 22 families in Nun River; Adaka, [12] with 23 species and 10 families from Njaba river; Sydenham, [15] of Ogum River (85 species), Victor and Tetteh [16] 58 species from Ikpoba River, Imevbore and Okpo [17] 70 species from Niger, Nwadiaro and Okereke [18] 46 fish species from 20 families from Otamiri River and [6] 20 fish species from 10 families from Otamiri River.…”

Section: Fish Composition and Diversitymentioning

confidence: 99%

See 1 more Smart Citation

Assessment of Fin Fish Composition, Diversity and Abundance in the Upper Course of Otamiri River, Imo State

Adaka

Eluu

2022

AJFAR

View full text Add to dashboard Cite

The fish composition in the upper course of Otamiri River was investigated for six months between April and September 2019, to determine the related abundance and diversity of fish species in the river. Fish species were collected weekly using fishing gears from three sampling stations which were purposefully selected. Sixteen species of fish belonging to nine (9) fish families were recorded. Among the families, Cichlidae recorded the most abundant at 83.3%, followed by Notopteridae (6.7%), Alestidae (4.2%) and Clarotidae (3.8%). Others include: Hepsidae (0.4%), and Cyprinidae (0.2%), while Channidae and Gymnarchidae were recorded as the least abundance with values of 0.1% each. The study showed that Sarotherodon melanotheron has the highest diversity with the value recorded 3.18, followed by Coptodon zilli having the value 3.09 respectively. It also shows that Barbus occidentalis with the value 0.69, followed by Coptodon dageti with value 1.01 has the least diversity. The study also showed that Pelmatopia mariae with value 0.99 was highly distributed. From the study, the fish species harvested from this water body have low population. This has great implication on the stock in the fishery and can also act as an indicator of over-exploitation of this species. Regular and detailed study on species composition of this water body should be encouraged for the sustainable utilization of its resources, also a proper restocking of Otamiri water body should be embarked on by Imo State government to enhance fresh water fish availability in the State and its environs.

show abstract

Spatial Rhythm and Periodic Pattern of Fish Species in Eniong River, South Eastern Nigeria

Isemin,

Ukpatu,

Udoidiong

2023

JALSI

View full text Add to dashboard Cite

The spatial rhythm and periodic pattern of fish species was studied in lower and upper streams in Eniong River, Southeastern Nigeria for 12 consecutive months (April, 2019- March, 2020) using standard methods and procedures. A total of 178 individuals of fish species belonging to 14 families and 25 species were recorded in the study. The results revealed species abundance in favour of the lower stream with only two species: Clarias macromystax (Clariidae) and Malapterurus electricus (Malapteruridae) not found in the lower stream. Populations were generally bigger in lower stream 122 (69.32%) than their counterparts in upper stream with 56 (30.68%) samples. The family Cichilidae dominates the lower stream while Clariidae dominates the upper stream. The result of Jaccard Index Similarity of the number of species found between the upper stream and lower stream revealed the value of 0.461˂50%. The overall range of fish sampled falls within (9.7-25.5cmTL) with size structure generally bigger in the wet season than in the dry season. Species had seasonal abundance in the wet season than the dry season. In the wet season, Oreochromis niloticus and Clarias macromystax were the most abundant species in June and September (wet season) while Malapterurus electricus and Citharinus citharus were not found in the wet season. In the dry season, twelve (12) species were completely absent-Hepsetus akawo, Ctenopoma nebulosum, pollimyrus asperses, Marcusens senegaleusis, Ccoptodon zelli, Cclarias gariepinus, Cclarias macromystax, Synodontis obesus, Schilbe mystus, Schilbe uranoscopus and Protopterus annectens and Hemichromis fasciatus. The most abundant species found in both dry and wet seasons were Oreochromis niloticus, Chrysichthys nigrodigitatus and Hemichromis fasciatus. The fish diversity ranges from typical freshwater fishes to brackish species. The greatest dissimilarity between the wet and dry seasons’ samples was generated by Oreochromis niloticus. The study recorded the highest species richness (Margaleaf) and diversity (Shanno-Wiener) in the wet season with 23 species while the lowest with the smallest abundance was observed in the dry season with 13 species. The study recommends low exploitation in the upper stream and in the dry season to enhance species productivity and sustainability in Eniong River, Southeastern Nigeria.

show abstract

Assessment of Abundance, Diversity and Distribution of Freshwater Fishes of Tropical Rainforest Rivers, Southeast Nigeria

Cited by 3 publications

References 0 publications

Studies on fish species diversity, abundance and Distributon along Onitsha axis of River Niger, Anambra State of Nigeria

Studies on fish species diversity, abundance and Distributon along Onitsha axis of River Niger, Anambra State of Nigeria

Assessment of Fin Fish Composition, Diversity and Abundance in the Upper Course of Otamiri River, Imo State

Spatial Rhythm and Periodic Pattern of Fish Species in Eniong River, South Eastern Nigeria

Contact Info

Product

Resources

About