NDLI: Abundance, distribution, and territory areas of rock-dwelling Lake Tanganyika cichlid fish species

Content Provider	Springer Nature Link
Author	Sturmbauer, Christian Fuchs, Corinna Harb, Georg Damm, Elisabeth Duftner, Nina Maderbacher, Michaela Koch, Martin Koblmüller, Stephan
Copyright Year	2008
Abstract	Lake Tanganyika, the second-oldest and second-deepest lake in the world, harbors an impressive cichlid fish fauna counting about 250 endemic species that are characterized by a great level of ecological, morphological, and behavioral specialization. This study describes and compares cichlid fish communities at two rocky shores with differential human impact in the south of Lake Tanganyika. Species inventories and depth-dependent abundances were elaborated. About 41 and 46 sympatric cichlid species were recorded in the two study sites, respectively. Variabilichromis moorii was the most abundant species (29–60% of total number of fishes), followed by Aulonocranus dewindti (3–19%), Tropheus moorii (12%), Ophthalmotilapia ventralis (4–10%), Eretmodus cyanostictus (6–11%), and Cyathopharynx furcifer (0.01–9%). All other species had abundances below 5%. It further emerged that large cichlids such as Petrochromis species, Cyathopharynx furcifer, and Lobochilotes labiatus were very rare at one location, with frequencies of 0.55% or less. Territorial sizes of three particularly abundant species, Variabilichromis moorii, Aulonocranus dewindti, and Tropheus moorii, were assessed by behavioral observations. We distinguished between territorial core areas and total defended area, yielding average core areas between 0.4 (V. moorii) and 1.6 m2 (T. moorii), and total defended areas averaging for each species between 1.6 (V. moorii) and 5.0 m2 (A. dewindti) with no significant differences between the two study sites. The data on individual densities are also relevant for evolutionary studies, in that they allow more accurate calculations of effective population sizes.
Starting Page	57
Ending Page	68
Page Count	12
File Format	PDF
ISSN	00188158
Journal	Hydrobiologia
Volume Number	615
Issue Number	1
e-ISSN	15735117
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-09-11
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Aulonocranus dewindti Tropheus moorii Variabilichromis moorii Ecology Fish community Territorial behavior Eastern Africa Zoology Freshwater & Marine Ecology
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

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Variation of territory size and defense behavior in breeding pairs of the endemic Lake Tanganyika cichlid fish Variabilichromis moorii

Additive genetic variance of quantitative traits in natural and pond-bred populations of the Lake Tanganyika cichlid Tropheus moorii

Concordant female mate preferences in the cichlid fish Tropheus moorii

Habitat complexity predicts the community diversity of rock-dwelling cichlid fish in Lake Malawi, East Africa

Female preferences for male traits and territory characteristics in the cichlid fish Tropheus moorii

Genetic and morphological population differentiation in the rock-dwelling and specialized shrimp-feeding cichlid fish species Altolamprologus compressiceps from Lake Tanganyika, East Africa

Colour-assortative mating among populations of Tropheus moorii, a cichlid fish from Lake Tanganyika, East Africa.

Assortative mating preferences between colour morphs of the endemic Lake Tanganyika cichlid genus Tropheus

Monogamy in the maternally mouthbrooding Lake Tanganyika cichlid fish Tropheus moorii

Abundance, distribution, and territory areas of rock-dwelling Lake Tanganyika cichlid fish species

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