The biology of snakehead, Channa obscura (Gunther), in a Nigerian pond under monoculture

Reginald Victor, Benedicta O. Akpocha

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Some aspects of the biology of Channa obscura (Gunther) based on small samples under monoculture are presented and discussed. The length-weight relationship indicated positive allometric growth. The mean somatic condition (K′) was inversely related to standard length. The high percentage (75%) of empty stomachs and mean stomach fullness ranks showed poor feeding conditions. The fish feed provided was unsuitable; the fish depended on natural food items and exhibited cannibalism. The male-female ratio was 1:3. The fish were reproducing under culture conditions; the biphasic pattern of reproduction was seasonal. The fecundity was low, ranging from 35 to 4010 eggs; it was correlated neither to standard length nor body weight.

Original languageEnglish
Pages (from-to)17-24
Number of pages8
JournalAquaculture
Volume101
Issue number1-2
DOIs
Publication statusPublished - Feb 1 1992

Fingerprint

Channidae
Channa
monoculture
pond
Biological Sciences
stomach
fish
length-weight relationship
cannibalism
natural foods
fish feeds
fecundity
egg
body weight
food
sampling

ASJC Scopus subject areas

  • Aquatic Science

Cite this

The biology of snakehead, Channa obscura (Gunther), in a Nigerian pond under monoculture. / Victor, Reginald; O. Akpocha, Benedicta.

In: Aquaculture, Vol. 101, No. 1-2, 01.02.1992, p. 17-24.

Research output: Contribution to journalArticle

@article{bd5e1ef8513b4b39bb8a704c028c2d2b,
title = "The biology of snakehead, Channa obscura (Gunther), in a Nigerian pond under monoculture",
abstract = "Some aspects of the biology of Channa obscura (Gunther) based on small samples under monoculture are presented and discussed. The length-weight relationship indicated positive allometric growth. The mean somatic condition (K′) was inversely related to standard length. The high percentage (75{\%}) of empty stomachs and mean stomach fullness ranks showed poor feeding conditions. The fish feed provided was unsuitable; the fish depended on natural food items and exhibited cannibalism. The male-female ratio was 1:3. The fish were reproducing under culture conditions; the biphasic pattern of reproduction was seasonal. The fecundity was low, ranging from 35 to 4010 eggs; it was correlated neither to standard length nor body weight.",
author = "Reginald Victor and {O. Akpocha}, Benedicta",
year = "1992",
month = "2",
day = "1",
doi = "10.1016/0044-8486(92)90228-D",
language = "English",
volume = "101",
pages = "17--24",
journal = "Aquaculture",
issn = "0044-8486",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - The biology of snakehead, Channa obscura (Gunther), in a Nigerian pond under monoculture

AU - Victor, Reginald

AU - O. Akpocha, Benedicta

PY - 1992/2/1

Y1 - 1992/2/1

N2 - Some aspects of the biology of Channa obscura (Gunther) based on small samples under monoculture are presented and discussed. The length-weight relationship indicated positive allometric growth. The mean somatic condition (K′) was inversely related to standard length. The high percentage (75%) of empty stomachs and mean stomach fullness ranks showed poor feeding conditions. The fish feed provided was unsuitable; the fish depended on natural food items and exhibited cannibalism. The male-female ratio was 1:3. The fish were reproducing under culture conditions; the biphasic pattern of reproduction was seasonal. The fecundity was low, ranging from 35 to 4010 eggs; it was correlated neither to standard length nor body weight.

AB - Some aspects of the biology of Channa obscura (Gunther) based on small samples under monoculture are presented and discussed. The length-weight relationship indicated positive allometric growth. The mean somatic condition (K′) was inversely related to standard length. The high percentage (75%) of empty stomachs and mean stomach fullness ranks showed poor feeding conditions. The fish feed provided was unsuitable; the fish depended on natural food items and exhibited cannibalism. The male-female ratio was 1:3. The fish were reproducing under culture conditions; the biphasic pattern of reproduction was seasonal. The fecundity was low, ranging from 35 to 4010 eggs; it was correlated neither to standard length nor body weight.

UR - http://www.scopus.com/inward/record.url?scp=38249011613&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=38249011613&partnerID=8YFLogxK

U2 - 10.1016/0044-8486(92)90228-D

DO - 10.1016/0044-8486(92)90228-D

M3 - Article

VL - 101

SP - 17

EP - 24

JO - Aquaculture

JF - Aquaculture

SN - 0044-8486

IS - 1-2

ER -