1999
DOI: 10.1071/wr97103
|View full text |Cite
|
Sign up to set email alerts
|

Morphology, age and survival of adult male New Zealand fur seals, Arctocephalus forsteri, in South Australia

Abstract: Nineteen adult male New Zealand fur seals, Arctocephalus forsteri, were marked and measured at the start of the breeding seasons in November 1992 and 1993 at Cape Gantheaume, Kangaroo Island in South Australia. The age of each seal was estimated from the number of cementum layers in a post-canine tooth. The males that were attempting to hold territories were 7–15 years old and the heaviest was 160 kg. The mass of males could be predicted accurately from linear measurements and several predictive equations enab… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1
1

Citation Types

1
20
1

Year Published

2001
2001
2021
2021

Publication Types

Select...
7

Relationship

0
7

Authors

Journals

citations
Cited by 15 publications
(22 citation statements)
references
References 25 publications
1
20
1
Order By: Relevance
“…Inter-specific dietary differences may explain why Australian fur seals attain greater sizes (average 279 kg, Warneke & Shaughnessy 1985) than New Zealand fur seals (average 135 to 137 kg, Troy et al 1999). Extending our findings from New Zealand fur seals, where prey mass increased from juveniles to adults, we expected adult male Australian fur seals would consume larger prey than adult male New Zealand fur seals.…”
Section: Inter-specific Competition Between Adult Malesmentioning
confidence: 70%
“…Inter-specific dietary differences may explain why Australian fur seals attain greater sizes (average 279 kg, Warneke & Shaughnessy 1985) than New Zealand fur seals (average 135 to 137 kg, Troy et al 1999). Extending our findings from New Zealand fur seals, where prey mass increased from juveniles to adults, we expected adult male Australian fur seals would consume larger prey than adult male New Zealand fur seals.…”
Section: Inter-specific Competition Between Adult Malesmentioning
confidence: 70%
“…This is not surprising given the pronounced sexual dimorphism exhibited in this species, with adult males weighing over three times more than an adult female (Troy et al 1999;Harcourt 2001). The results perhaps hint at differential maternal investment between male and female pups, but the study of differential maternal investment has been the subject of considerable debate for some time (Lunn et al 1993;Chilvers et al 1995;Lunn and Arnould 1997;Guinet et al 1999).…”
Section: Morphological Characteristicsmentioning
confidence: 66%
“…The efficacy of hot-iron branding in biological and agricultural research has been investigated extensively, with most studies concluding that the technique does not appear to compromise longterm health, survival probability or behaviour (Mills, Wolfe, Le Riche, & Meyer, 1978;AuriolesGamboa & Sinsel, 1988;Schwartzkopfgenswein, Stookey, Janzen, & McKinnon, 1997;Troy, Middleton, & Phelan, 1997;Pomeroy, Fedak, Rothery, & Anderson, 1999;Castley, Knight, Mills, & Thouless, 2002). It was not the intention of this paper to judge the efficacy of the hot-iron branding practice as a research technique, per se.…”
Section: Discussionmentioning
confidence: 94%