Research Article
Büyüme Modeli Bir Ön Çalışma, Durum Faktörü ve Yeni Kalaba River, Nijerya'da Sicklefin Kefali, Liza falcipinnis (Valenciennes, 1836) Nüfus Yapısı
Abstract
Nijerya'daki New Calabar Nehri'nden Sicklefin Mullet Liza falcipinnis Valenciennes 1836 nın büyüme modeli, durum faktörü ve stok özellikleri üzerine bir araştırma Ocak-Aralık 2017 arasında yapıldı. L. falcipinnis'in uzunluğu 9.1 ila 37.1 cm arasında değişirken ağırlık 13 ila 370 g olarak değişmektedir. Uzunluk ağırlık ilişkisinin sonucu negatif allometrik büyüme paternini değeri b=2.38 ve koşul faktörü (k)= 0.88 ile ortaya çıkarılmıştır. Asimptotik uzunluk (L∞), büyüme katsayısı (K) ve büyüme performans endeksi (φ - phi prime) sırasıyla 33.1 cm, yılda 0.18 ve yıllık 2.295 olarak hesaplandı. Araştırmada kaydedilen toplam doğal ve balıkçılık ölüm oranları sırasıyla yıllık 1.17, yıllık 0.56 ve yıllık 0.61 iken, kullanma oranı (E) değeri 0.52 olmuştur. Yakalama rutini olasılığının lojistik regresyonu 13,8 cm'de % 50 LC tahmini yapmıştır. İstihdam başına üretilen Emax değerlerini maksimuma çıkaran sömürü oranı 0,88 olup bu türlerin aşırı avlandığını göstermiştir. Tüm bu sonuçlar, çalışılan balık türlerinin sürdürülebilir kullanımı için New Calabar Nehri'ndeki balıkçılık faaliyetlerinin düzenlenmesi gerektiğini ortaya koymaktadır.
References
- [1] Adesulu EA, Sydenham DHJ. The fresh water and fisheries of Nigeria. Macmillan Nigeria Publishers, Lagos, 2007; 397pp. [2] Dankwa HR, Gordon C. The fish and fisheries of the Lower Volta mangrove swamps in Ghana. African Journal of Science and technology 2002; 3(1): 25-32. [3] Fagade SO, Olaniyan CIO. 1973. The food and feeding interrelationship of the fishes in Lagos lagoon. J. Fish Biol 1973; 5: 205-225. [4] King RP. 1984. On the Biology of the Mugilidae in Bonny River (Niger Delta, Nigeria) with Particular Reference of Feeding Ecology. M.Sc. Thesis, Department of Zoology, University of Port Harcourt, Port Harcourt, 1984. [5] Olaniyi OO. The food and feeding interralation- ship of fishes in Nember waterside, Port-Harcourt Creek, Rivers State, Nigeria, with particular reference to the food and feeding habits of Oxyyurichfhysocci denfalis and Acenfrogobius schlegelli. Thesis, Univ. Port-Harcourt, 1984. [6] Akpan AW, Ubak RG. Aspects of the trophic ecology of (Valenciennes 1836) (Pisces: Mugilidae) in the Cross River Estuary (Nigeria). Journal of Aquatic Sciences 2005; 20(1): 53-62. [7] Akinrotimi OA, Abu OMG, Bekibele DO, Uedeme-Naa B. Occurrence and Distribution of Grey Mullets Liza falcipinnis and Liza grandisquamis from Buguma Creek, Niger Delta, Nigeria. Research Journal of Biological Sciences 2010; 5 (1) 1-5. [8] George ADI, Abowei JFN. The Recruitment Pattern of Liza falcipinnis from Elechi Creek, Upper Bonny, Niger Delta, Nigeria. Open Access Library Journal, 2018; e4457. [9] National Bureau of Statistics (NBS) 2017. Nigerian’s fish production 2010-2015, 2017. [10] Hile R. Age and growth of the Cisco leucichthys artedi (Le Sueur) in the lakes of northeastern Highlands, Wisconsin. Bull. U. S. Bur. Fish1938; (48): 209 – 317. [11] Bhattacharya CG. A simple method of resolution of a distribution into Gaussian components. Biometrics 1967; 23:115-135. [12] Gulland, JA, Holt SJ. Estimation of growth parameters for data at unequal time intervals. J de Con Inter our I Explo de La Mer 1959; 25(1):47-49 [13] Munro JL, Pauly D. A simple method for comparing the growth of fishes and invertebrates, ICLARM Fish byte 1983; 1: 56. [14] Pauly D. On the inter-relationships between natural mortality, growth performance and mean environmental temperature in 175 fish stock. J. Cons 1980; 39 (3): 175-192. [15] Pauly, D. 1982. Studying Single-Species Dynamics in a Tropical Multispecies Context. In: Pauly, D. and G. L., Murphy. Eds., Theory and Management of Tropical Fisheries: ICLARM Conference Proceedings, ICLARM, Manila, 1982; 33-70. [16] Pauly D, Soriano ML. Some practical extensions to Beverton and Holt’s relative yield-per-recruit model. In: First Asian Fisheries Forum, Asian Fisheries Society (eds. Maclean, J. L.; Dizon, L. B. and Hosillos, L. V.), 1986; pp. 149-495. Manila, Philippines. [17] Gayanilo FC, Sparre P, Pauly D. 2005. FAO-ICLARM Stock Assessment Tools II (FiSAT II). User’s guide.FAO Computerized Information Series (Fisheries). No. 8, revised version, FAO, Rome, 2005; 168pp. [18] King RP. Length-Weight relationships of Nigerian Coastal Water Fishes. NAGA ICLARM Quarterly 1996; 19(4):53-58. [19] Dankwa HR. Blay J. Jr. Food and Feeding habits of Grey mullets (Pisces: Mugilidae) in two estuaries in Ghana. Ghana Journal of Science 2005; 20:62-80 [20] Lawson EO, Akintola SO, Olatunde OA. Aspects of the Biology of Sickle fin mullet, Liza falcipinnis (Valenciennes, 1836) from Badagry creek, Lagos, Nigeria. Nature and Sciences 2010; 8(11): 168-182. [21] Schneider W. Field guild to the commercial marine resources of the gulf of guinea. FAO. RAFR/F1/90/2. 1990; p. 268. [22] Ekpo IE, Essien-Ibok MA, Nkwoji NJ. Food and feeding habits and condition factor of fish species in Qua Iboe River estuary, Akwa Ibom State, southeastern Nigeria International Journal of Fisheries and Aquatic Studies 2014; 2(2): 38-46. [23] Offem BO, Akebejo- Samsons Y, Omoniyi IT. Diet, Size and Reproductive Biology of the silver catfish, Chrysichthys nigrodigitaus Siluriformes: Bagridae) in the Cross River, Nigeria. Revista de Biology Tropical 2008; 56(4):166-178. [24] Welcomme RL. A review of a model for qualitative evaluation of exploitation levels in multi- species fisheries. Fisheries Management and Ecology 1999; 6:1-19. [25] Baijot E, Moreau J. Biology and demographic status of the main fish species in the reservoirs of Burkina-Faso. In: Baijot, E., Moreau, J., Bouda, S. (Eds.), Hydrobiological aspects of fisheries in Small Reservoirs in the Sahel Region. Technical Centre for the European Communities, Wageningen, the Netherlands, 1997; pp. 79–109 [26] Beverton RJH, Holt SJ. On the dynamics of exploited fish populations. Fish. Invest. Ser. II. Mar. Fish. G.B. Minist. Agric. Food Fish 1957; 29: 1–533 [27] Gulland JA. Fish resources of the ocean. FAO Fisheries Technical Paper (97). West Byfleet, Survey, Fishing News Books Ltd., 1971; pp. 425. [28] Patterson K. Fisheries for small pelagic species: An empirical approach to management targets. Rev. Fish Biol. Fish. 1992; 2: 321-338. [29] Pauly D. Fish population dynamics in tropical waters: A manual for use with programmable calculators. — ICLARM Stud. & Rev. 8. ICLARM, Manila, 1984; 325 pp. [30] Fröese R. Keep it simple: three indicators to deal with overfishing. Fish Fisheries 2004; 5:86-91. [31] Koranteng KA. The western gulf of guinea coastal upwelling-peculiarities changes, and fisheries implications: a review. Intergovernmental Oceanographic Commission (of UNESCO), 1995.
A Preliminary Study of Growth Pattern, Condition Factor and Population Structure of Sicklefin Mullet, Liza falcipinnis (Valenciennes, 1836) in the New Calabar River, Nigeria
Abstract
A study on growth pattern, condition factor and
stock characteristics of the Sicklefin Mullet Liza falcipinnis Valenciennes, 1836 from the New Calabar River,
Nigeria was undertaken from January to December 2017. The length of L. falcipinnis ranged from 9.1 to 37.1 cm while weight was between 13 to 370 g. The result of length weight relationship
revealed negative allometric growth pattern with the b value of 2.38 and
condition factor (k) of 0.88. The asymptotic length (L∞), growth coefficient
(K) and index of growth performance (φ – phi prime) were estimated at 33.1 cm,
0.18 per year and 2.295 per year respectively. The total, natural and fishing
mortality rates recorded in the study were 1.17 per year, 0.56 per year and
0.61 per year respectively while the exploitation ratio (E) value was 0.52. The
Logistic regression of the probability of capture routine gave an estimate of LC
50% at 13.8 cm. The exploitation rate which maximises yield per recruit produced values of Emax was
0.88, which indicated that the species was overfished. All these results reveal
the need to regulate fishing activities in the New Calabar River for
sustainable exploitation of the studied fish species.
References
- [1] Adesulu EA, Sydenham DHJ. The fresh water and fisheries of Nigeria. Macmillan Nigeria Publishers, Lagos, 2007; 397pp. [2] Dankwa HR, Gordon C. The fish and fisheries of the Lower Volta mangrove swamps in Ghana. African Journal of Science and technology 2002; 3(1): 25-32. [3] Fagade SO, Olaniyan CIO. 1973. The food and feeding interrelationship of the fishes in Lagos lagoon. J. Fish Biol 1973; 5: 205-225. [4] King RP. 1984. On the Biology of the Mugilidae in Bonny River (Niger Delta, Nigeria) with Particular Reference of Feeding Ecology. M.Sc. Thesis, Department of Zoology, University of Port Harcourt, Port Harcourt, 1984. [5] Olaniyi OO. The food and feeding interralation- ship of fishes in Nember waterside, Port-Harcourt Creek, Rivers State, Nigeria, with particular reference to the food and feeding habits of Oxyyurichfhysocci denfalis and Acenfrogobius schlegelli. Thesis, Univ. Port-Harcourt, 1984. [6] Akpan AW, Ubak RG. Aspects of the trophic ecology of (Valenciennes 1836) (Pisces: Mugilidae) in the Cross River Estuary (Nigeria). Journal of Aquatic Sciences 2005; 20(1): 53-62. [7] Akinrotimi OA, Abu OMG, Bekibele DO, Uedeme-Naa B. Occurrence and Distribution of Grey Mullets Liza falcipinnis and Liza grandisquamis from Buguma Creek, Niger Delta, Nigeria. Research Journal of Biological Sciences 2010; 5 (1) 1-5. [8] George ADI, Abowei JFN. The Recruitment Pattern of Liza falcipinnis from Elechi Creek, Upper Bonny, Niger Delta, Nigeria. Open Access Library Journal, 2018; e4457. [9] National Bureau of Statistics (NBS) 2017. Nigerian’s fish production 2010-2015, 2017. [10] Hile R. Age and growth of the Cisco leucichthys artedi (Le Sueur) in the lakes of northeastern Highlands, Wisconsin. Bull. U. S. Bur. Fish1938; (48): 209 – 317. [11] Bhattacharya CG. A simple method of resolution of a distribution into Gaussian components. Biometrics 1967; 23:115-135. [12] Gulland, JA, Holt SJ. Estimation of growth parameters for data at unequal time intervals. J de Con Inter our I Explo de La Mer 1959; 25(1):47-49 [13] Munro JL, Pauly D. A simple method for comparing the growth of fishes and invertebrates, ICLARM Fish byte 1983; 1: 56. [14] Pauly D. On the inter-relationships between natural mortality, growth performance and mean environmental temperature in 175 fish stock. J. Cons 1980; 39 (3): 175-192. [15] Pauly, D. 1982. Studying Single-Species Dynamics in a Tropical Multispecies Context. In: Pauly, D. and G. L., Murphy. Eds., Theory and Management of Tropical Fisheries: ICLARM Conference Proceedings, ICLARM, Manila, 1982; 33-70. [16] Pauly D, Soriano ML. Some practical extensions to Beverton and Holt’s relative yield-per-recruit model. In: First Asian Fisheries Forum, Asian Fisheries Society (eds. Maclean, J. L.; Dizon, L. B. and Hosillos, L. V.), 1986; pp. 149-495. Manila, Philippines. [17] Gayanilo FC, Sparre P, Pauly D. 2005. FAO-ICLARM Stock Assessment Tools II (FiSAT II). User’s guide.FAO Computerized Information Series (Fisheries). No. 8, revised version, FAO, Rome, 2005; 168pp. [18] King RP. Length-Weight relationships of Nigerian Coastal Water Fishes. NAGA ICLARM Quarterly 1996; 19(4):53-58. [19] Dankwa HR. Blay J. Jr. Food and Feeding habits of Grey mullets (Pisces: Mugilidae) in two estuaries in Ghana. Ghana Journal of Science 2005; 20:62-80 [20] Lawson EO, Akintola SO, Olatunde OA. Aspects of the Biology of Sickle fin mullet, Liza falcipinnis (Valenciennes, 1836) from Badagry creek, Lagos, Nigeria. Nature and Sciences 2010; 8(11): 168-182. [21] Schneider W. Field guild to the commercial marine resources of the gulf of guinea. FAO. RAFR/F1/90/2. 1990; p. 268. [22] Ekpo IE, Essien-Ibok MA, Nkwoji NJ. Food and feeding habits and condition factor of fish species in Qua Iboe River estuary, Akwa Ibom State, southeastern Nigeria International Journal of Fisheries and Aquatic Studies 2014; 2(2): 38-46. [23] Offem BO, Akebejo- Samsons Y, Omoniyi IT. Diet, Size and Reproductive Biology of the silver catfish, Chrysichthys nigrodigitaus Siluriformes: Bagridae) in the Cross River, Nigeria. Revista de Biology Tropical 2008; 56(4):166-178. [24] Welcomme RL. A review of a model for qualitative evaluation of exploitation levels in multi- species fisheries. Fisheries Management and Ecology 1999; 6:1-19. [25] Baijot E, Moreau J. Biology and demographic status of the main fish species in the reservoirs of Burkina-Faso. In: Baijot, E., Moreau, J., Bouda, S. (Eds.), Hydrobiological aspects of fisheries in Small Reservoirs in the Sahel Region. Technical Centre for the European Communities, Wageningen, the Netherlands, 1997; pp. 79–109 [26] Beverton RJH, Holt SJ. On the dynamics of exploited fish populations. Fish. Invest. Ser. II. Mar. Fish. G.B. Minist. Agric. Food Fish 1957; 29: 1–533 [27] Gulland JA. Fish resources of the ocean. FAO Fisheries Technical Paper (97). West Byfleet, Survey, Fishing News Books Ltd., 1971; pp. 425. [28] Patterson K. Fisheries for small pelagic species: An empirical approach to management targets. Rev. Fish Biol. Fish. 1992; 2: 321-338. [29] Pauly D. Fish population dynamics in tropical waters: A manual for use with programmable calculators. — ICLARM Stud. & Rev. 8. ICLARM, Manila, 1984; 325 pp. [30] Fröese R. Keep it simple: three indicators to deal with overfishing. Fish Fisheries 2004; 5:86-91. [31] Koranteng KA. The western gulf of guinea coastal upwelling-peculiarities changes, and fisheries implications: a review. Intergovernmental Oceanographic Commission (of UNESCO), 1995.
There are 1 citations in total.
Details
| Primary Language | English |
|---|---|
| Subjects | Engineering |
| Journal Section | TJST |
| Authors | |
| Publication Date | March 15, 2019 |
| Submission Date | October 24, 2018 |
| Published in Issue | Year 2019 Volume: 14 Issue: 1 |
