From 98753aaf3533b26b323c0020a732a8fbdf74290c Mon Sep 17 00:00:00 2001 From: ggserver Date: Mon, 29 Jul 2024 14:09:22 +0000 Subject: [PATCH] Add updates up until 2024-07-29 14:03:19 --- .../87/0D1B87C6FFE6D529FCE05A4236DCFD33.xml | 244 ++++++++++++++++++ 1 file changed, 244 insertions(+) create mode 100644 data/0D/1B/87/0D1B87C6FFE6D529FCE05A4236DCFD33.xml diff --git a/data/0D/1B/87/0D1B87C6FFE6D529FCE05A4236DCFD33.xml b/data/0D/1B/87/0D1B87C6FFE6D529FCE05A4236DCFD33.xml new file mode 100644 index 00000000000..d88eced75dc --- /dev/null +++ b/data/0D/1B/87/0D1B87C6FFE6D529FCE05A4236DCFD33.xml @@ -0,0 +1,244 @@ + + + +Ontogeny and stomach content analysis of Bagrus bayad (Forskal, 1977) in Zobe reservoir, Katsina, Nigeria + + + +Author + +Ademola, Babatunde Taofik + + + +Author + +Yakubu, Fadila Yusuf + +text + + +International Journal of Fisheries and Aquatic Studies + + +2024 + +2024-01-01 + + +12 + + +1 + + +46 +50 + + + + +http://dx.doi.org/10.22271/fish.2024.v12.i1a.2890 + +journal article +10.22271/fish.2024.v12.i1a.2890 +2347-5129 +12550241 + + + + + + +Results + + + + + + + +Size distribution of + +Bagrus bayad + +in Zobe reservoir: + +The total lengths of 126 samples of + +Bagrus + +fish obtained in this study ranged from 12.0 to 55.0 cm, and the total weights ranged between 16.9 and 1260.0 g, with a mean total length and weight of 20.43± +6.45 cm +and +109.23±175.05 g +, respectively ( +Table 1 +). Of the 126 + +Bagrus + +samples obtained from Zobe reservoir, 110 (87.30%) contained food items in their stomachs. The proportion of stomach fullness across the various size classes of + +Bagrus + +in this study showed that a full stomach was not recorded among young + +Bagrus + +( +Table 1 +). Additionally, empty stomachs were also the highest among this group (36.5%). Adult + +Bagrus + +with empty stomachs had the least proportion in the sample obtained from Zobe Dam during this study. + + + + +Table 1: +Morphometry and percentage of fullness of guts of + +Bagrus bayad + +in Zobe Dam, Katsina + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+Total Length (cm) + +Wet Weight (g) + +Stomach Fullness +
+Range cm + +N + +Mean ± SD + +Mean ± SD + +Full + +3/4 full + +1/2 full + +¼ full + +Empty +
≤ 308819.60±2.6573.03±40.2405.535.622.436.5
30.0-60.03134.80±4.60301.45±295.029.530.313.211.535.5
≥60.0752.5±2.421212.50±50.164.515.333.331.715.2
+ + + + +Stomach contents + + + +The important food items of + +B. bayad + +in Zobe reservoir were fish eggs, annelids, insects, bivalves, crustaceans, teleosts, and debris ( +Table 2 +). The gut content of + +Bagrus + +in Zobe reservoir showed a considerable variation in the diet based on fish size. Insects had the highest percentage frequency (26%) among the young + +Bagrus + +( +Table 2 +). The percent frequency of occurrence was highest for crustaceans (28%) in the juvenile + +Bagrus + +, while in the adult + +Bagrus + +, the frequency of occurrence was highest for teleost fishes (46%) among the food items. Invertebrate groups dominate the gut content of young and juvenile + +Bagrus + +, with a cumulative percentage numerical abundance of 50.7% and 57.8%, respectively. In addition, debris was found mainly in the stomachs of young + +Bagrus + +, accounting for a percentage numerical abundance of 31%. Whereas, teleost fish had the highest numerical abundance in the adult + +Bagrus + +stomach content, with a value of 53%. Crustacean had the highest IRI among all food items in young (15.9%) and juvenile (10.89%) + +Bagrus + +in Zobe reservoir during this study. While teleost fish had a higher IRI in adult food items with a value of 77.46, Amphipods were well selected among the crustaceans by young and juvenile + +Bagrus + +, while adult + +Bagrus + +selected tilapia in Zobe Dam. + + + + \ No newline at end of file