Results 81 to 90 of about 25,769 (226)

Nonapeptide cell size differs between male morphs of the West African cichlid, Pelvicachromis pulcher

Journal of Fish Biology, EarlyView.
Abstract Alternative male morphs are found in many species of fishes. These morphs often differ in suites of social behaviours, such as aggression and territoriality, associated with alternative reproductive tactics. Such consistent morph‐typical behavioural profiles suggest common differences in underlying neuroendocrine mechanisms.
Adam R. Reddon, Douglas R. Wylie, Peter L. Hurd   +2 more
wiley   +1 more source

Effects of some environmental factors on the fecundity of Tilapia species (Family Cichlidae) in Kigera Reservoir, New Bussa [PDF]

, 2005
The effects of some environmental factors on the fecundity of Tilapia species (Family Cichilidae) was carried out at the Kigera dam. Four Tilapia species caught were Tilapia zilli, Hemichromis fasciatus, Sarotherodon galilaeus and Oreochromis niloticus ...
Issa, E.A., Olufeagba, S.O., Raji, A.
core  

A new endemic pearl cichlid of the ‘Geophagus’ brasiliensis (Cichliformes: Cichlidae) species group from the Piranga River, upper Doce River basin, southeastern Brazil

Journal of Fish Biology, EarlyView.
Abstract A new species of pearl cichlid of the ‘Geophagus’ brasiliensis species group, endemic to the Piranga River, a major tributary of the upper Doce River basin in the state of Minas Gerais, southeastern Brazil, is herein described. The new species is delimited using an integrative approach, with molecular‐based species delimitation methods coupled
Cidimar E. de Assis, Jorge A. Dergam, Amanda F. Cunha, Valéria N. Machado, Tomas Hrbek, Natállia M. de F. Vicente, Victor de Queiroz, Elisabeth Henschel   +7 more
wiley   +1 more source

A latitudinal cline in the efficacy of endogenous signals: evidence derived from retinal cone contraction in fish. [PDF]

, 2011
Like many physiological systems synchronised to the light:dark cycle, retinomotor movements in 'lower' vertebrates are controlled by both the ambient illumination and input from endogenous circadian oscillators.
Allemand, Allemand, Arey, Besharse, Burnside, Burnside, Burnside, Cahill, Cahill, Costa, Dearry, Douglas, Douglas, Douglas, Douglas, Easter, Foster, Foster, Foster, Goldman, Green, Gwinner, Hastings, Hau, Iigo, Iuvone, John, John, John, John, Johnsen, Joshi, Joshi, Keny, Kirsch, Konings, Kullander, Kyriacou, Lamb, Lankinen, Lankinen, Levinson, Lofts, Lu, Lythgoe, Mayer, McCormack, McCormack, McCormack, McFarland, Menger, Michael, Olla, Perlman, Pflüger, Pittendirgh, Pittendrigh, Ribelayga, Satralkar, Satralkar, Sawyer, Shand, Simunovic, Tosini, Tosini, Wagner, Weeks, Weitzman, Welsh, Whitmore, Wigger, Yeates-Burghart   +71 more
core   +1 more source

Effects of gill and muscle biopsies on the short‐term behaviour, exercise performance and survival of juvenile lake trout (Salvelinus namaycush)

Journal of Fish Biology, EarlyView.
Abstract Non‐lethal biopsy is a valuable tool for gaining insight into the physiological status of fish in the wild and for predicting their subsequent behaviour and survival. However, linking the insights from biopsy to post‐release behaviour relies on the assumption that the biopsy itself has no meaningful impact on post‐release behaviour or survival
Laura Haniford, Connor H. Reid, Gillian Zorn, Graham D. Raby, Steven J. Cooke   +4 more
wiley   +1 more source

Competition-driven speciation in cichlid fish [PDF]

Nature Communications, 2014
Theoretically, competition can initiate divergence in habitat use between individuals of a species, leading to restricted gene flow and eventual speciation. Evidence that sister species differ in habitat use is commonplace and consistent with this mechanism, but empirical experimental support is surprisingly scarce.
Winkelmann, Kai, Genner, Martin J, Takahashi, Tetsumi, Rüber, Lukas   +3 more
openaire   +3 more sources

Metabolic adjustments in Satanoperca aff. jurupari (Perciformes: Cichlidae)

Genetics and Molecular Biology, 2003
In this paper, we describe the enzyme levels and isozyme distribution in skeletal and heart muscle of Satanoperca aff. jurupari, (Cichlidae, subgroup Geophaginae). LDH and CS were measured in skeletal and heart muscle. Starch gel electrophoresis was used
Chippari-Gomes Adriana R., Leitão Marco Aurélio B., Paula-Silva Maria de Nazaré, Mesquita-Saad Lenise S. B. de, Almeida-Val Vera Maria F.   +4 more
doaj  

Field Guide to Nonindigenous Marine Fishes of Florida [PDF]

, 2009
The purpose of this field guide is to provide information on nonindigenous (i.e., non-native) fishes that have been observed in Florida’s marine waters. Introductions of non-native marine fishes into Florida’s waters could be intentional or unintentional,
Akins, Lad, Morris, Jr., James A., Schofield, Pamela J.   +2 more
core  

Size‐selective mortality evolutionarily alters collective behaviour in response to predation risk in a zebrafish (Danio rerio) harvest‐induced selection model

Journal of Fish Biology, EarlyView.
Abstract Intensive multigenerational size‐selective mortality has been found to alter collective properties like shoaling via evolutionary adaptations of individual‐level behavioural traits. For example, experimental populations of zebrafish (Danio rerio) experiencing intensive large size‐selective mortality over multiple generations developed less ...
Tamal Roy, Daniel João Costa Pereira de Faria, Robert Arlinghaus   +2 more
wiley   +1 more source

Cichlid Evolution: Lessons in Diversification 2012 [PDF]

International Journal of Evolutionary Biology, 2012
This is the second special issue on cichlid evolution hosted by the International Journal of Evolutionary Biology. Once more, we are overwhelmed by the vivid responses to our call for contributions, and thank the authors for their great work. The thirteen papers in this issue, including two reviews, span geographically from Africa to South America and ...
Koblmuller, Stephan, Albertson, R Craig, Genner, Martin J, Sefc, Kristina M, Takahashi, Tetsumi   +4 more
openaire   +3 more sources