IIARD International Institute of Academic Research and Development

JOURNAL OF BIOLOGY AND GENETIC RESEARCH (JBGR )

E-ISSN 2545-5710
P-ISSN 2695-222X
VOL. 10 NO. 1 2024
DOI: https://doi.org/10.56201/jbgr.v10.no1.2024.pg14.21

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Tail Weight Analysis of the Invasive Tiger Shrimp (Penaeus monodon) and Native Pink Shrimp (Farfantepenaeus notialis) in the Niger Delta Region: Implications for Selective Breeding Program in Nigeria

Sylvanus Anene NWAFILI and Doris Chibanya OLUMATI

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Abstract

Since the Asia tiger shrimp, Penaeus monodon invaded the coastal waters of Nigeria and the cpllapse of the pink shrimp, Farfentepenaeus notialis fishery in 1990s, shrimp farming have been suggested. However, information on the tail weight of the two candidate aquaculture species are inadequate. The objective of this study was to determine the sex ratio and compare the percentage of the total body weight of P. monodon and F. notialis that is available for consumption. A total of 257 individuals of P. monodon and F. notialis were obtained from three locations – New Calabar River, Andoni River System and Bille Creek in the Niger Delta Area of Rivers State. The total body weight and tail weight (weight of abdomen severed along the carapace posterior) of each individual were subjected to analysis. The Asian tiger shrimp maintained a male dominated sex ratio while it was the reverse in Pink shrimp. The tail weight was 64 – 67% and 58 – 65% in P. monodon and F.s notialis, respectively of the body weight. The tail weight in female F. notialis was meatier than in males which suggest the profitability of monosex culture. There was strong positive correlation between body weight and tail weight, implying that selection for body weight will profoundly influence tail weight.

keywords:

ail weight, Penaeus monodon, Farfentepenaeus notialis, Niger Delta, selective breeding

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References:

Ansa, E.J. (2009). Opportunities for shrimp farming in the Niger Delta: dilemma of sustainable
production in the absence of regulatory framework [Paper presentation]. 24th Annual
Conference of the Fisheries Society of Nigeria (FISON), Akure, Nigeria.
Anyanwu, P.E., Ayinla, O.A., Ebonwu, B.I., Ayaobu-Cookey, I.K., Hamzat, M.B., Ihimekpen,
A.F., Matanmi, M.A., Afolabi, E.S., Ajijo, M.R. and Olaluwoye, B.L. (2011). Culture
Possibilities of Penaeus monodon in Nigeria. Journal of Fisheries and Aquatic Science, 6:
499-505.

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