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Mammalian metabolic rates in the hottest fish on earth
Routine rates of O2 consumption (MO2) measured on site, together with MO2 and swimming performance at 25, 32, and 39 °C in the laboratory, showed that the SWHS tilapia exhibited the greatest metabolic performance ever recorded in a fish.
Transepithelial potential in the Magadi tilapia, a fish living in extreme alkalinity
It is concluded that the transepithelial potential in Alcolapia grahami, a small cichlid fish living in Lake Magadi, Kenya, is largely a Na+ diffusion potential attenuated by some permeability to anions, and reflects a unique adaptation to life in extreme alkalinity.
Rh proteins and NH4+-activated Na+-ATPase in the Magadi tilapia (Alcolapia grahami), a 100% ureotelic teleost fish
Model calculations suggest that active ammonia excretion against the gradient may become possible through a combination of Rh protein and NH4+-activated Na+-ATPase function.
Air breathing in Magadi tilapia Alcolapia grahami, under normoxic and hyperoxic conditions, and the association with sunlight and reactive oxygen species.
This is the first record of air breathing in a facultative air-breathing fish in hyperoxic conditions and the firstrecord of an ILCM in a cichlid species.
Morphological evaluation of spermatogenesis in Lake Magadi tilapia (Alcolapia grahami): a fish living on the edge.
Fasting in the ureotelic Lake Magadi tilapia, Alcolapia grahami, does not reduce its high metabolic demand, increasing its vulnerability to siltation events
This work shows that Lake Magadi tilapia have the capacity to survive short periods of starvation which could occur when siltation linked to flash floods covers their main food source, but their seemingly hardwired high metabolic rates would compromise long-term survival.
Lobar holoprosencephaly with craniofacial defects in a Friesian calf: A case report
- M. L. Kisipan, S. N. Nyaga, Jesse N Thuo, Phillip O Nyakego, C. Orenge, R. Ojoo
- MedicineVeterinary medicine and science
- 23 January 2020
The case was confirmed as lobar holoprosencephaly based on characteristic anatomopathological findings and the aetiology of the defects in the present case could not be determined though they are thought to be either a result of recessive inheritance or exposure to teratogenic steroid alkaloids through materials fed to the dam during early pregnancy.
Metabolism and antioxidant defense in the larval chironomid Tanytarsus minutipalpus: adjustments to diel variations in the extreme conditions of Lake Magadi
The observed increases in temperature and dissolved O2 content in Lake Magadi were associated with changes in the antioxidant system of T. minutipalpus larvae, and adjustments performed by the chironomid larvae were efficient in maintaining body homeostasis, as well as protecting biomolecules against oxidative damage, so that oxidative stress did not occur.
Sizes, condition factors and sex ratios of the scattered populations of the small cichlid fish, Alcolapia grahami, that inhabits the lagoons and sites of Lake Magadi (Kenya), one of the most extreme…
The skewed SRs and the markedly low CFs of A. grahami reported here may be ascribed to the harsh (stressful) environmental conditions the fish contends with and may signal prospective demise of the fish.
Imiquimod does not elicit inflammatory responses in the skin of the naked mole rat (Heterocephalus glaber)
Naked mole rat could be a valuable negative model for studying psoriasis and other inflammatory skin conditions but as a prerequisite, there is need for further investigations to establish the mechanisms behind its lack of response to imiquimod.