Reproductive Characteristics of the Elephant-snout Fish Mormyrus kannume Forsskal, 1775 from the Nile, Egypt

Mekkawy, Imam A.; Hassan, Arafa

doi:10.3923/jbs.2012.15.24

Cited by 8 publications

(9 citation statements)

References 7 publications

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“…Aly (1993) similarly observed peaks in spawning during June/July in Lake Nasser. Mekkawy and Hassan (2012) observed year‐round spawning in M. kannume from the Nile in Assiut, Egypt. With such variance in the breeding season, it is important for researchers wanting to study wild populations during the breeding season to know when the rainy season where the population of interest occurs rather than plan field expeditions based on historical accounts of when a species is in breeding condition.…”

Section: Mormyroid Reproductive Biologymentioning

confidence: 99%

A review of the reproductive biology of mormyroid fishes: An emerging model for biomedical research

Saunders,

Gallant

2024

J Exp Zool Pt B

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Mormyroidea is a superfamily of weakly electric African fishes with great potential as a model in a variety of biomedical research areas including systems neuroscience, muscle cell and craniofacial development, ion channel biophysics, and flagellar/ciliary biology. However, they are currently difficult to breed in the laboratory setting, which is essential for any tractable model organism. As such, there is a need to better understand the reproductive biology of mormyroids to breed them more reliably in the laboratory to effectively use them as a biomedical research model. This review seeks to (1) briefly highlight the biomedically relevant phenotypes of mormyroids and (2) compile information about mormyroid reproduction including sex differences, breeding season, sexual maturity, gonads, gametes, and courtship/spawning behaviors. We also highlight areas of mormyroid reproductive biology that are currently unexplored and/or have the potential for further investigation that may provide insights into more successful mormyroid laboratory breeding methods.

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Section: Mormyroid Reproductive Biologymentioning

confidence: 99%

A review of the reproductive biology of mormyroid fishes: An emerging model for biomedical research

Saunders,

Gallant

2024

J Exp Zool Pt B

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“…These results are in contrast with those reported in some teleost fish where the sex ratio favors males. For example, in Mormyridae Mormyrus kannume Forsskål, 1775 in the Damietta branch of the Nile, Egypt (1.00:0.42) [24]; on the Nile River in Assiut Egypt (0.84:1) [25] and at Bahr Shebeen Nilotic Cana, Egypt (0.87:1) [14]. The pattern variation between populations of M. kannume Forsskål, 1775 reflects the time and locality factors and refers to the act of natural selection on the overall sex ratio [14].…”

Section: Weight Of Male and Female Fish Scattered Patternmentioning

confidence: 99%

Preliminary study of Notopterus notopterus gonadal maturation using several rearing systems as the base of domestication processes

Nurhidayat

Lukman²,

Said³

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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The populations of Notopterus notopterus or commonly known as Javan Belida, in some places are rarely found and their populations have decreased. Domestication is one strategy of fisheries resources management related to the rare condition, threatened extinction, or even disappearance of fish species. Domestication is also part of the initiative for developing the aquaculture effort of this species. The purpose of this study is to assess the adaptation of N. notopterus on gonad maturation in several rearing systems as a base of the initial domestication. Fish were collected from the Rawa Pening reservoir in Central Java, Indonesia. Gonad maturation assessment was carried out on different rearing system, namely semi-ground pond, square concrete pond, three units of the oval concrete pond and square concrete pond with closed recirculation system. As a comparison, another group of fish also reared in their natural habitat using cage system. Results showed that the maturity level of female fish is the highest in an oval tube, while the lowest was in a semi-ground pond. The square concrete pond is a potential container for gonadal maturation processes since it produces from low to high levels of gonad maturity and produces the largest value of high-level gonad maturation.

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“…The growth performance index (ϕ) was 3.11 and the longevity of age (t max) was 18.56 years. In spite of the presence of negative allometric growth combined with the lower value of conditions than -1‖ which may be affected by food and spawning, the others such as aging, growth performance, and age longevity have reflected a satisfied growth pattern in this lake and are valuable for creating a monitoring and management system for M. kannumein Lake Nasser recommending its conservation with require to more studies downstream in the Nile after the High Dam construction, Aswan, Egypt in 1969 (Mekkawy and Hassan, 2012). It is widely distributed in Africa; it is found in Uganda, Nigeria, Blue Nile and Lake Victoria, Lake Kyoga, Lake Albert, Lakes Edwards and George, Tana River, Athi River and Northern Guaso Nyiro River (Scott, 1974;Bishai &Khalil, 1997 andFawole, 2002); and more frequently in Lake Nubia where the largest specimen had reached 130 cm in length (Latif, 1974).…”

Section: Introductionmentioning

confidence: 99%

Age and growth of elephant-snout fish Mormyrus kannume (Forsskål, 1775) (Family: Mormyridae) from Lake Nasser, Egypt

al.¹

2022

Egypt. J. of Aquatic Biolo. and Fish.

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Mormyrus kannume, Mormyridae, Lake Nasser, EgyptThe elephant-snout fish Mormyrus kannume is one of the known interesting fish in the most interesting man-made lake in Egypt (Lake Nasser). Due to the global conservatory objectives and lake management, this species won scientific and commercial interest as there were no sufficient or recent studies on this species. The present work aimed to study the growth pattern of the elephant-snout fish (M. kannume) from Lake Nasser, Egypt via length-weight relationship, condition factor,

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Reproductive Characteristics of the Elephant-snout Fish Mormyrus kannume Forsskal, 1775 from the Nile, Egypt

Cited by 8 publications

References 7 publications

A review of the reproductive biology of mormyroid fishes: An emerging model for biomedical research

A review of the reproductive biology of mormyroid fishes: An emerging model for biomedical research

Preliminary study of Notopterus notopterus gonadal maturation using several rearing systems as the base of domestication processes

Age and growth of elephant-snout fish Mormyrus kannume (Forsskål, 1775) (Family: Mormyridae) from Lake Nasser, Egypt

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