The biology of the stoat (Mustela erminea) in the National Parks of New Zealand I. General introduction

Stoats are an introduced species in New Zealand, and are considered to be a pest, especially in the National Parks. Basic information on their biology is required to assist development of a rational control policy. Between 1972 and 1976, 1599 stoat carcasses were obtained from 14 collection areas, including all 10 National Parks. In a suite of 7 papers we describe their gut contents, body measurements, pelage and reproductive condition, and the distribution of certain parasites (the nematode Skrjabingylus nasicola, and fleas). This introductory paper describes the collection areas, and gives definitions and other information necessary for interpretation of what follows.