Length at life stages of the white shark Carcharodon carcharias in the western North Atlantic
Length at life stages of the white shark Carcharodon carcharias is not well known for most of the 9 populations of this species, including in the western North Atlantic (WNA). We analyzed length and maturity data by sex for 87 white sharks with sizes ranging 138-501 cm total length (TL), captured, s...
Published in: | Endangered Species Research |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Inter-Research
2024
|
Subjects: | |
Online Access: | https://doi.org/10.3354/esr01300 https://doaj.org/article/d3af8a77e9a9483d86d03379b8401c58 |
id |
ftdoajarticles:oai:doaj.org/article:d3af8a77e9a9483d86d03379b8401c58 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:d3af8a77e9a9483d86d03379b8401c58 2024-09-15T18:22:49+00:00 Length at life stages of the white shark Carcharodon carcharias in the western North Atlantic JF Márquez-Farías JP Tyminski GC Fischer RE Hueter 2024-02-01T00:00:00Z https://doi.org/10.3354/esr01300 https://doaj.org/article/d3af8a77e9a9483d86d03379b8401c58 EN eng Inter-Research https://www.int-res.com/abstracts/esr/v53/p199-211/ https://doaj.org/toc/1863-5407 https://doaj.org/toc/1613-4796 1863-5407 1613-4796 doi:10.3354/esr01300 https://doaj.org/article/d3af8a77e9a9483d86d03379b8401c58 Endangered Species Research, Vol 53, Pp 199-211 (2024) Zoology QL1-991 Botany QK1-989 article 2024 ftdoajarticles https://doi.org/10.3354/esr01300 2024-08-05T17:49:38Z Length at life stages of the white shark Carcharodon carcharias is not well known for most of the 9 populations of this species, including in the western North Atlantic (WNA). We analyzed length and maturity data by sex for 87 white sharks with sizes ranging 138-501 cm total length (TL), captured, studied, and released by OCEARCH during 2012-2022, off the US and Canadian Atlantic coasts. A binary logistic regression was used to estimate the length-at-maturity (L50) for the WNA white shark with a Bayesian statistical framework using a Markov chain Monte Carlo method for numerical integration. Different trials using noninformative and informative priors were tested. The posterior probability distribution for L50, steepness of the model (φ), and 95% credible intervals (CI) of the logistic model for females were L50 = 411.3 cm TL (CI: 390.8-432.6 cm TL) and φ = 10.5 (CI: 5.7-17.8) and for males were L50 = 334.9 cm TL (CI: 321.2-348.2 cm TL) and φ = 7.5 (CI: 4.2-12.4). These L50 values are somewhat smaller than previously reported sizes-at-maturity for both sexes of this species. An ordinal logistic regression allowed us to determine the probability of being in the various life stages (young-of-the-year, juvenile, and adult) at a particular size. Estimating the length at any life-history stage of white sharks along with age estimates is useful for determining the reproductive value of the population and ultimately for estimating the relative contribution (elasticity) of vital rates to population growth. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Endangered Species Research 53 199 211 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Zoology QL1-991 Botany QK1-989 |
spellingShingle |
Zoology QL1-991 Botany QK1-989 JF Márquez-Farías JP Tyminski GC Fischer RE Hueter Length at life stages of the white shark Carcharodon carcharias in the western North Atlantic |
topic_facet |
Zoology QL1-991 Botany QK1-989 |
description |
Length at life stages of the white shark Carcharodon carcharias is not well known for most of the 9 populations of this species, including in the western North Atlantic (WNA). We analyzed length and maturity data by sex for 87 white sharks with sizes ranging 138-501 cm total length (TL), captured, studied, and released by OCEARCH during 2012-2022, off the US and Canadian Atlantic coasts. A binary logistic regression was used to estimate the length-at-maturity (L50) for the WNA white shark with a Bayesian statistical framework using a Markov chain Monte Carlo method for numerical integration. Different trials using noninformative and informative priors were tested. The posterior probability distribution for L50, steepness of the model (φ), and 95% credible intervals (CI) of the logistic model for females were L50 = 411.3 cm TL (CI: 390.8-432.6 cm TL) and φ = 10.5 (CI: 5.7-17.8) and for males were L50 = 334.9 cm TL (CI: 321.2-348.2 cm TL) and φ = 7.5 (CI: 4.2-12.4). These L50 values are somewhat smaller than previously reported sizes-at-maturity for both sexes of this species. An ordinal logistic regression allowed us to determine the probability of being in the various life stages (young-of-the-year, juvenile, and adult) at a particular size. Estimating the length at any life-history stage of white sharks along with age estimates is useful for determining the reproductive value of the population and ultimately for estimating the relative contribution (elasticity) of vital rates to population growth. |
format |
Article in Journal/Newspaper |
author |
JF Márquez-Farías JP Tyminski GC Fischer RE Hueter |
author_facet |
JF Márquez-Farías JP Tyminski GC Fischer RE Hueter |
author_sort |
JF Márquez-Farías |
title |
Length at life stages of the white shark Carcharodon carcharias in the western North Atlantic |
title_short |
Length at life stages of the white shark Carcharodon carcharias in the western North Atlantic |
title_full |
Length at life stages of the white shark Carcharodon carcharias in the western North Atlantic |
title_fullStr |
Length at life stages of the white shark Carcharodon carcharias in the western North Atlantic |
title_full_unstemmed |
Length at life stages of the white shark Carcharodon carcharias in the western North Atlantic |
title_sort |
length at life stages of the white shark carcharodon carcharias in the western north atlantic |
publisher |
Inter-Research |
publishDate |
2024 |
url |
https://doi.org/10.3354/esr01300 https://doaj.org/article/d3af8a77e9a9483d86d03379b8401c58 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Endangered Species Research, Vol 53, Pp 199-211 (2024) |
op_relation |
https://www.int-res.com/abstracts/esr/v53/p199-211/ https://doaj.org/toc/1863-5407 https://doaj.org/toc/1613-4796 1863-5407 1613-4796 doi:10.3354/esr01300 https://doaj.org/article/d3af8a77e9a9483d86d03379b8401c58 |
op_doi |
https://doi.org/10.3354/esr01300 |
container_title |
Endangered Species Research |
container_volume |
53 |
container_start_page |
199 |
op_container_end_page |
211 |
_version_ |
1810462830795685888 |