Haematological and Genotoxic Indices of Two Cichlid Fish Species from a Tropical Estuarine Lagoon

2018 ◽  
Vol 59 (1) ◽  
pp. 15
Author(s):  
Amii Usese ◽  
Minasu Kuton ◽  
Obinna Chukwu
2019 ◽  
Author(s):  
Pascal I. Hablützel ◽  
Robert B. Huanto

AbstractIn comparison with the Bolivian Amazon, the ichthyofauna of the La Plata drainage of Bolivia received relatively little attention historically. Until now, 14 species of cichlid fish have been registered from this area. After an exhaustive review of museum collections (Museo de Historia Natural Noel Kempff Mercado y Colección Boliviana de Fauna), we can report three additional species: Astronotus crassipinnis (Heckel, 1840), Mesonauta festivus (Heckel, 1840) and Satanoperca pappaterra (Heckel, 1840). Four other species, which have been listed in previous publications, can be confirmed for the La Plata drainage of Bolivia based on the examination of voucher specimens: Aequidens plagiozonatus Kullander, 1984, Apistogramma commbrae (Regan, 1906), A. trifasciata (Eigenmann & Kennedy, 1903) and Crenicichla vittata Heckel, 1840. As such, 16 of the 17 species can be referenced with voucher specimens in museum collections. We also provide an identification key for the cichlid fish species of the study area.


2019 ◽  
Vol 36 (1) ◽  
pp. 125-127 ◽  
Author(s):  
Moulitharan Nallathambi ◽  
Jayakumar N ◽  
Uma Arumugam ◽  
Praveenraj Jayasimhan ◽  
Sudhan Chandran ◽  
...  

Parasitology ◽  
2003 ◽  
Vol 127 (4) ◽  
pp. 387-398 ◽  
Author(s):  
V. M. VIDAL-MARTÍNEZ ◽  
R. POULIN

An assessment is made of the repeatability of parasite community structure in space for a marine fish, and in space and time for a freshwater fish from south-eastern Mexico. The marine fish species was the red grouper,Epinephelus morio(collected from 9 localities), and the freshwater species was the cichlid,Cichlasoma urophthalmus(collected from 6 localities: including monthly at 2 localities for 1 year, and bimonthly at 1 locality in 1990 and 1999). Pairwise interspecific associations and analyses of nested patterns in the distributions of parasite species among hosts were used in both fish species, with comparisons over time made only with the cichlid. Positive interspecific associations, and nested patterns were noted in some localities for both fish species, and/or at some sampling times for the cichlid fish. However, non-random patterns in the structure of parasite communities in these 2 host species only were observed sporadically. When present, nestedness in both fish species was apparently linked with a positive association between total infection intensities and fish size. Additionally, adjacent localities were more likely to display similar parasite community structure than distant ones. This preliminary result suggests that distance between localities is an important determinant of predictability in parasite community structure.


2015 ◽  
Vol 11 (9) ◽  
pp. 20150521 ◽  
Author(s):  
Nicolas Boileau ◽  
Fabio Cortesi ◽  
Bernd Egger ◽  
Moritz Muschick ◽  
Adrian Indermaur ◽  
...  

Aggressive mimicry is an adaptive tactic of parasitic or predatory species that closely resemble inoffensive models in order to increase fitness via predatory gains. Although similarity of distantly related species is often intuitively implicated with mimicry, the exact mechanisms and evolutionary causes remain elusive in many cases. Here, we report a complex aggressive mimicry strategy in Plecodus straeleni , a scale-eating cichlid fish from Lake Tanganyika, which imitates two other cichlid species. Employing targeted sequencing on ingested scales, we show that P. straeleni does not preferentially parasitize its models but—contrary to prevailing assumptions—targets a variety of co-occurring dissimilar looking fish species . Combined with tests for visual resemblance and visual modelling from a prey perspective, our results suggest that complex interactions among different cichlid species are involved in this mimicry system.


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