The Bats Reproductive Technique And The Evidence For An Annual Cycle

1260 WordsSep 20, 20146 Pages
The New Zealand Lesser Short-tailed bat (Mystacina tuberculata) is an endangered bat, endemic to New Zealand. It diverges into three subspecies, of which two are endangered and one is at risk (Department of Conservation [DOC], 2012). It is one of three original native bat species in New Zealand with only two of those species still found today. The Lesser Short-tails are microbats, with pre-foraging adults weighing between 10 to 22 grams (Carter & Riskin, 2006). An adult body length can extend up to 70mm and with an average wingspan between 280-300mm wide (Carter & Riskin, 2006). They have a brown-grey coat colour that lightens in the ventral areas and similar skin colour (Carter & Riskin, 2006). Due to its endangered status, understanding the Lesser Short-tailed bats reproductive cycle is essential in helping conserve the species and stabilize the population. This essay will explore the bats reproductive technique and the evidence for an annual cycle, which can be seen to make anatomical, behavioural and physiological changes to the bats (Racey & Entwistle, 2000). The male anatomical and physiological changes have not had a sufficient in depth study, however their behavioural changes a can clearly be seen (Krutzsch, 2000). On the other hand female anatomical and physiological changes have been explored a little more and there is more information available on those changes. Changes include behavioural courtship, anatomical and physiological fluctuation (with emphasis on

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