@article {831,
	title = {Aspects of the reproductive biology of Hippopotamyrus pictus from Lake Kainji, with notes on four other mormyrid species},
	journal = {Journal of Fish Biology},
	volume = {11},
	number = {5},
	year = {1977},
	pages = {437{\textendash}445},
	abstract = {<p>A method is descrihed for the assessment of fecundity in in mormyrrd fish. In all species examined a tri-modal egg size distribution was found in the mature pre-spawning ovary. These modes represented one oocyte and two ova components. The significance of the presence of two sizes of ovum is discussed in relation to breeding periodicity in Hippopotamyrus pictus. Size and age at first maturity are estimated for this species. The probable effects of the formation of the lake on the breeding behaviour of mormyrids is discussed.</p>
},
	url = {http://onlinelibrary.wiley.com/store/10.1111/j.1095-8649.1977.tb04138.x/asset/j.1095-8649.1977.tb04138.x.pdf?v=1\&t=hqzjgrlk\&s=80a89cbded91f381ca05b0ee20d62e74d4487e99},
	author = {Blake, B.F.}
}
@article {412,
	title = {The electric organ discharges of the Petrocephalus species (Teleostei: Mormyridae) of the Upper Volta System},
	journal = {Journal of Fish Biology},
	volume = {74},
	number = {1},
	year = {2009},
	note = {395IDTimes Cited:0Cited References Count:40},
	month = {Jan},
	pages = {54-76},
	abstract = {<p>In this study, a first comparative investigation of all four species of Petrocephalus (P. bovei, P. bane, P. soudanensis and P. cf. pallidomaculatus) present in the Upper Volta system and their electric organ discharges (EOD) was conducted. It was found that P. bovei was the most widespread (in terms of habitat use), but in several places P. bovei, P. soudanensis and P. cf. pallidomaculatus occurred syntopically. All species emitted a triphasic signal, and with very few exceptions, the Petrocephalus species of the Upper Volta system could clearly be identified on the basis of their EOD waveforms. The most obvious differences between species in EOD waveforms were in amplitude of the last phase, total duration and fast Fourier transformation (FFT) peak frequency. No sexual dimorphism was present in the EOD of any species although external dimorphism, i.e. an indentation at the base of the anal fin of mature males, was common. The EOD waveform diversity in the Upper Volta principally resembled that found in four sympatric Petrocephalus species from the OgoouE system (Gabon) and might play a role in species recognition and speciation processes.</p>
},
	keywords = {active electrolocation, central-africa, communication, eod waveform, fishes mormyridae, gnathonemus-petersii mormyridae, osteoglossomorpha, pendjari, pollimyrus-isidori, recognition, sex-differences, speciation, variability, water conductivity, weakly electric fish, west africa},
	isbn = {0022-1112},
	url = {<Go to ISI>://000262516900004},
	author = {Moritz, T. and Engelmann, J. and Linsenmair, K. E. and G. von der Emde}
}
