TY - JOUR
T1 - Pup production of the New Zealand fur seal on Otago Peninsula, New Zealand
AU - Lalas, Chris
AU - Harcourt, Robert
PY - 1995
Y1 - 1995
N2 - The New Zealand fur seal (Arctocephalus forsteri) did not breed in Otago, southeastern South Island, New Zealand from the 17th Century until the late 1970's. Here we report a recent dramatic increase in pup production for Otago Peninsula, from 20–30 pups born in two rookeries in 1982/83 to a minimum (from a direct count) of 673 born at eleven distinct rookeries during the 1993/94 breeding season. Adjustments for precensus mortality and for undercounting were calculated from one site and applied to all rookeries. These adjustments raised the 1993/94 production figure to an estimated 1136 ± 98 pups. The implications of these adjustments, and of making pup counts based on surveys, are discussed. Future monitoring of pup numbers should be carefully timed to coincide with the end of the local pupping season.
AB - The New Zealand fur seal (Arctocephalus forsteri) did not breed in Otago, southeastern South Island, New Zealand from the 17th Century until the late 1970's. Here we report a recent dramatic increase in pup production for Otago Peninsula, from 20–30 pups born in two rookeries in 1982/83 to a minimum (from a direct count) of 673 born at eleven distinct rookeries during the 1993/94 breeding season. Adjustments for precensus mortality and for undercounting were calculated from one site and applied to all rookeries. These adjustments raised the 1993/94 production figure to an estimated 1136 ± 98 pups. The implications of these adjustments, and of making pup counts based on surveys, are discussed. Future monitoring of pup numbers should be carefully timed to coincide with the end of the local pupping season.
UR - http://www.scopus.com/inward/record.url?scp=0029477427&partnerID=8YFLogxK
U2 - 10.1080/03014223.1995.9517483
DO - 10.1080/03014223.1995.9517483
M3 - Article
AN - SCOPUS:0029477427
SN - 0303-6758
VL - 25
SP - 81
EP - 88
JO - Journal of the Royal Society of New Zealand
JF - Journal of the Royal Society of New Zealand
IS - 1
ER -