Results 71 to 80 of about 31,138 (282)
Convict cichlids benefit from close proximity to another species of cichlid fish [PDF]
Biology Letters, 2008 The coexistence of species with overlapping resource use is often thought to involve only negative fitness effects as a consequence of interspecific competition. Furthermore, the scarce empirical research on positive species interactions has predominantly focused on sessile organisms.
openaire +2 more sources
Temporal diversification of Central American cichlids [PDF]
BMC Evolutionary Biology, 2010 Cichlid fishes are classic examples of adaptive radiation because of their putative tendency to explosively diversify after invading novel environments. To examine whether ecological opportunity increased diversification (speciation minus extinction) early in a species-rich cichlid radiation, we determined if Heroine cichlids experienced a burst of ...
Hulsey C Darrin +2 more
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Integrative Zoology, EarlyView.In this study, we tested whether white and yellow morphs of the common wall lizard (Podarcis muralis) adopt alternative strategies shaped by the immuno‐competence handicap hypotheses (ICHH). We found that testosterone‐induced immune suppression was stronger in white males, while aggression decreased in both morphs.
Roberto Sacchi +5 more
wiley +1 more source
Land Cover, Land Use, and Climate Change Impacts on Endemic Cichlid Habitats in Northern Tanzania
Remote Sensing, 2017 Freshwater ecosystems are among the most threatened on Earth, facing environmental and anthropogenic pressures often surpassing their terrestrial counterparts. Land use and land cover change (LUCC) such as degradation and fragmentation of the terrestrial
Margaret Kalacska +3 more
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Crater lake cichlids individually specialize along the benthic-limnetic axis [PDF]
, 2014 A common pattern of adaptive diversification in freshwater fishes is the repeated evolution of elongated open water (limnetic) species and high-bodied shore (benthic) species from generalist ancestors.
Barlow G. W. +14 more
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Integrative Zoology, EarlyView.Integrating comparative spectrometry, image analysis, and thermal modeling, we reveal that (1) females optimize crypsis via background matching, (2) males prioritize high‐contrast disruptive patterning at a significant thermoregulatory cost (reduced solar heat gain), and (3) habitat‐specific monomorphism in Diploderma slowinskii underscores ecological ...
Yuning Cao, Lin Shi, Yin Qi
wiley +1 more source
Selectivity in regeneration of the oculomotor nerve in the cichlid fish, Astronotus ocellatus [PDF]
, 1965 It has long been considered a general rule for nerve regeneration that the reinnervation of skeletal muscle is nonselective. Regenerating nerve fibers are supposed to reconnect with one skeletal muscle as readily as another according to studies covering ...
Arora, H. L., Sperry, R. W.
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Integrative Zoology, EarlyView.Social rank in greater long‐tailed hamsters (Tscherskia triton) shapes gut microbiota composition and metabolite profiles. Dominant males exhibit a “high‐vigilance, metabolically activated” phenotype, with elevated aggression and specific gut microbiota enriched in energy‐harvesting taxa and fecal queuine.
Da Zhang, Xiaoming Xu, Zhibin Zhang
wiley +1 more source
Uniciencia, 1992 Se investigó el efecto del cultivo en alta densidad sobre la tasa de crecimiento de juveniles de guapote tigre. Mientras que la tasa de crecimiento promedio disminuye con la densidad, el crecimiento de los peces más grandes no resultó afectado. Con altas
Jorge Günther Nonell +1 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 +2 more
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