Estimated calving interval for the New Zealand southern right whale (Eubalaena australis)

Anthony Raphael Davidson, William Rayment, Steve M. Dawson, Trudi Webster, Elisabeth Slooten

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    Southern right whales (Eubalaena australis) were widespread in New Zealand waters before commercial whaling in the nineteenth century caused drastic declines in their abundance and distribution. Following the cessation of whaling, the population has been recovering and is now slowly recolonising its former range. Estimates of population demographics, including reproductive output, are essential for predicting the trajectory of this population. We gathered photo-identification data on female southern right whales during annual field trips to the Auckland Islands, the principal calving area in New Zealand waters. Forty-five calving intervals were observed between 2006 and 2013 (mean interval = 3.31 years, 95% CI = 3.06–3.57). Incorporating the effects of possible missed calving events produced a plausible range of mean calving intervals from 3.17 to 3.31 years. Our results suggest that the calving interval of New Zealand southern right whales is similar to that found in populations elsewhere.

    Original languageEnglish
    Pages (from-to)372-382
    Number of pages11
    JournalNew Zealand Journal of Marine and Freshwater Research
    Volume52
    Issue number3
    DOIs
    Publication statusPublished - 3 Jul 2018

    Fingerprint

    calving interval
    whale
    whaling
    calving
    nineteenth century
    trajectory
    trajectories
    reproductive performance
    water
    demographic statistics
    Eubalaena australis

    Cite this

    Davidson, Anthony Raphael ; Rayment, William ; Dawson, Steve M. ; Webster, Trudi ; Slooten, Elisabeth. / Estimated calving interval for the New Zealand southern right whale (Eubalaena australis). In: New Zealand Journal of Marine and Freshwater Research. 2018 ; Vol. 52, No. 3. pp. 372-382.
    @article{409b19164d044732a4d1e2b36071075a,
    title = "Estimated calving interval for the New Zealand southern right whale (Eubalaena australis)",
    abstract = "Southern right whales (Eubalaena australis) were widespread in New Zealand waters before commercial whaling in the nineteenth century caused drastic declines in their abundance and distribution. Following the cessation of whaling, the population has been recovering and is now slowly recolonising its former range. Estimates of population demographics, including reproductive output, are essential for predicting the trajectory of this population. We gathered photo-identification data on female southern right whales during annual field trips to the Auckland Islands, the principal calving area in New Zealand waters. Forty-five calving intervals were observed between 2006 and 2013 (mean interval = 3.31 years, 95{\%} CI = 3.06–3.57). Incorporating the effects of possible missed calving events produced a plausible range of mean calving intervals from 3.17 to 3.31 years. Our results suggest that the calving interval of New Zealand southern right whales is similar to that found in populations elsewhere.",
    keywords = "bootstrapping, calving interval, demography, Eubalaena australis, New Zealand, reproductive rate, Southern Right Whale",
    author = "Davidson, {Anthony Raphael} and William Rayment and Dawson, {Steve M.} and Trudi Webster and Elisabeth Slooten",
    year = "2018",
    month = "7",
    day = "3",
    doi = "10.1080/00288330.2017.1397034",
    language = "English",
    volume = "52",
    pages = "372--382",
    journal = "New Zealand Journal of Marine and Freshwater Research",
    issn = "0028-8330",
    publisher = "SIR Publishing",
    number = "3",

    }

    Estimated calving interval for the New Zealand southern right whale (Eubalaena australis). / Davidson, Anthony Raphael; Rayment, William; Dawson, Steve M.; Webster, Trudi; Slooten, Elisabeth.

    In: New Zealand Journal of Marine and Freshwater Research, Vol. 52, No. 3, 03.07.2018, p. 372-382.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Estimated calving interval for the New Zealand southern right whale (Eubalaena australis)

    AU - Davidson, Anthony Raphael

    AU - Rayment, William

    AU - Dawson, Steve M.

    AU - Webster, Trudi

    AU - Slooten, Elisabeth

    PY - 2018/7/3

    Y1 - 2018/7/3

    N2 - Southern right whales (Eubalaena australis) were widespread in New Zealand waters before commercial whaling in the nineteenth century caused drastic declines in their abundance and distribution. Following the cessation of whaling, the population has been recovering and is now slowly recolonising its former range. Estimates of population demographics, including reproductive output, are essential for predicting the trajectory of this population. We gathered photo-identification data on female southern right whales during annual field trips to the Auckland Islands, the principal calving area in New Zealand waters. Forty-five calving intervals were observed between 2006 and 2013 (mean interval = 3.31 years, 95% CI = 3.06–3.57). Incorporating the effects of possible missed calving events produced a plausible range of mean calving intervals from 3.17 to 3.31 years. Our results suggest that the calving interval of New Zealand southern right whales is similar to that found in populations elsewhere.

    AB - Southern right whales (Eubalaena australis) were widespread in New Zealand waters before commercial whaling in the nineteenth century caused drastic declines in their abundance and distribution. Following the cessation of whaling, the population has been recovering and is now slowly recolonising its former range. Estimates of population demographics, including reproductive output, are essential for predicting the trajectory of this population. We gathered photo-identification data on female southern right whales during annual field trips to the Auckland Islands, the principal calving area in New Zealand waters. Forty-five calving intervals were observed between 2006 and 2013 (mean interval = 3.31 years, 95% CI = 3.06–3.57). Incorporating the effects of possible missed calving events produced a plausible range of mean calving intervals from 3.17 to 3.31 years. Our results suggest that the calving interval of New Zealand southern right whales is similar to that found in populations elsewhere.

    KW - bootstrapping

    KW - calving interval

    KW - demography

    KW - Eubalaena australis

    KW - New Zealand

    KW - reproductive rate

    KW - Southern Right Whale

    UR - http://www.scopus.com/inward/record.url?scp=85033685563&partnerID=8YFLogxK

    U2 - 10.1080/00288330.2017.1397034

    DO - 10.1080/00288330.2017.1397034

    M3 - Article

    VL - 52

    SP - 372

    EP - 382

    JO - New Zealand Journal of Marine and Freshwater Research

    JF - New Zealand Journal of Marine and Freshwater Research

    SN - 0028-8330

    IS - 3

    ER -