Many biodiversity hotspots are located in montane regions, especially in the tropics. A possible explanation for this pattern is that the narrow thermal tolerances of tropical species and greater climatic stratification of tropical mountains create more opportunities for climate-associated parapatric or allopatric speciation in the tropics relative to the temperate zone. However, it is unclear ...

Tropical forests are regions of relative thermal stability and so, although equatorial regions are expected to experience less climate warming than the global average in coming years, tropical trees might be more vulnerable to change. But are they? In this issue of Journal of Experimental Botany, Slot and Winter (2017) provide one of the most comprehensive studies on thermal acclimation of trop...

infection resulting from plasmodium vivax is the commonest type found in india as well as other tropical regions. the clini­cal picture is variable depending on the nature, immunity of the child, and lives in an endemic area or not. here, we report a child, who presented with cerebellar dysfunction with intact sensorium and plasmodium vivax was positive on peripheral smear.

Differences in species richness between regions are ultimately explained by patterns of speciation, extinction, and biogeographic dispersal. Yet, few studies have considered the role of all three processes in generating the high biodiversity of tropical regions. A recent study of a speciose group of predominately New World frogs (Hylidae) showed that their low diversity in temperate regions was...

To evaluate the prevalence of varicella-zoster virus infection in young adults from different Brazilian urban regions, 975 serum samples from blood donors aged 20 to 29 years, from tropical climate cities (Salvador and Fortaleza) and from temperate climate cities (S o Paulo, Curitiba and Porto Alegre) were tested by an in-house ELISA for detection of anti-varicella-zoster virus IgG antibodies. ...

Myiasis is an infestation of tissues with larval stage of dipterous flies.  This condition most often affects the skin and may also occur in certain body cavities.  It is mainly seen in the tropics, though it may also be rarely encountered in non-tropical regions.  Herein, we present a case of cutaneous furuncular myiasis in an Iranian male who had travelled to Africa and his condition was fina...

BACKGROUND The northern part of India harbours a great diversity of medicinal plants due to its distinct geography and ecological marginal conditions. The traditional medical systems of northern India are part of a time tested culture and honored still by people today. These traditional systems have been curing complex disease for more than 3,000 years. With rapidly growing demand for these med...

HEPATIC MANIFESTATIONS OF TROPICAL DISEASES ‘Tropical diseases’ are the diseases that are prevalent in or are unique to tropical and subtropical regions. The tropical areas, which lie in the zone between the Tropic of Cancer and the Tropic of Capricorn, have a hot climate all the year and have larger volume of rains, which forms an ideal breeding ground for a large number of insect vectors and ...

Part I of this two-part paper treats Tropical Rainfall Measuring Mission (TRMM) radar, passive microwave, and lightning observations in hurricanes individually. This paper (Part II) examines relationships between these parameters (and implications of the relationships). Quantitative relationships between lightning occurrence and 85-GHz brightness temperature, 37-GHz brightness temperature, and ...