Heritability of growth traits in South African Abalone (Haliotis midae L.) using the ‘internal reference’ method

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Standard

Heritability of growth traits in South African Abalone (Haliotis midae L.) using the ‘internal reference’ method. / Difford, G. F.; Vlok, A. C.; Rhode, C.; Brink, D.

I: Aquaculture, Bind 468, Nr. Part 1, 01.02.2017, s. 451-457.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

APA

CBE

MLA

Vancouver

Author

Difford, G. F. ; Vlok, A. C. ; Rhode, C. ; Brink, D. / Heritability of growth traits in South African Abalone (Haliotis midae L.) using the ‘internal reference’ method. I: Aquaculture. 2017 ; Bind 468, Nr. Part 1. s. 451-457.

Bibtex

@article{d9fde5f86a5b4b8dac0ebb21cec78cfa,
title = "Heritability of growth traits in South African Abalone (Haliotis midae L.) using the ‘internal reference’ method",
abstract = "The South African Abalone Haliotis midae is a vital aquaculture species, accounting for the highest percentage of total aquaculture production revenue. Improving the growth rate and thus, reducing operational costs with associated benefits in production efficiency and profitability is a priority of producers. The industry has been reluctant to implement anything but the most rudimentary breeding practices, due to unreliable tagging methods and the cost of using DNA markers. As such, the current study aimed to estimate genetic parameters for growth traits in the absence of individual tagging or DNA markers using the ‘internal reference’ method. The requirements of the internal reference method are evaluated and the merits and demerits considered. Heritability estimates were low to moderate in magnitude for wet weight (0.06–0.21) and shell length (0.11–0.16). It is concluded that substantial genetic gains can be achieved through selection and further work into developing strategies employing individual identification and DNA markers are warranted. Statement of relevance We adapted an existing statistical control method in an innovative way to estimate genetic parameters for growth traits in abalone, without individual tagging or DNA markers. This method facilitates the transition from simple family selection programs to combined selection programs by providing the necessary inputs for bio-economic modelling to inform the design of more advanced breeding programs.",
keywords = "Haliotis midae, Heritability, Internal reference method",
author = "Difford, {G. F.} and Vlok, {A. C.} and C. Rhode and D. Brink",
year = "2017",
month = "2",
day = "1",
doi = "10.1016/j.aquaculture.2016.10.042",
language = "English",
volume = "468",
pages = "451--457",
journal = "Aquaculture",
issn = "0044-8486",
publisher = "Elsevier BV",
number = "Part 1",

}

RIS

TY - JOUR

T1 - Heritability of growth traits in South African Abalone (Haliotis midae L.) using the ‘internal reference’ method

AU - Difford, G. F.

AU - Vlok, A. C.

AU - Rhode, C.

AU - Brink, D.

PY - 2017/2/1

Y1 - 2017/2/1

N2 - The South African Abalone Haliotis midae is a vital aquaculture species, accounting for the highest percentage of total aquaculture production revenue. Improving the growth rate and thus, reducing operational costs with associated benefits in production efficiency and profitability is a priority of producers. The industry has been reluctant to implement anything but the most rudimentary breeding practices, due to unreliable tagging methods and the cost of using DNA markers. As such, the current study aimed to estimate genetic parameters for growth traits in the absence of individual tagging or DNA markers using the ‘internal reference’ method. The requirements of the internal reference method are evaluated and the merits and demerits considered. Heritability estimates were low to moderate in magnitude for wet weight (0.06–0.21) and shell length (0.11–0.16). It is concluded that substantial genetic gains can be achieved through selection and further work into developing strategies employing individual identification and DNA markers are warranted. Statement of relevance We adapted an existing statistical control method in an innovative way to estimate genetic parameters for growth traits in abalone, without individual tagging or DNA markers. This method facilitates the transition from simple family selection programs to combined selection programs by providing the necessary inputs for bio-economic modelling to inform the design of more advanced breeding programs.

AB - The South African Abalone Haliotis midae is a vital aquaculture species, accounting for the highest percentage of total aquaculture production revenue. Improving the growth rate and thus, reducing operational costs with associated benefits in production efficiency and profitability is a priority of producers. The industry has been reluctant to implement anything but the most rudimentary breeding practices, due to unreliable tagging methods and the cost of using DNA markers. As such, the current study aimed to estimate genetic parameters for growth traits in the absence of individual tagging or DNA markers using the ‘internal reference’ method. The requirements of the internal reference method are evaluated and the merits and demerits considered. Heritability estimates were low to moderate in magnitude for wet weight (0.06–0.21) and shell length (0.11–0.16). It is concluded that substantial genetic gains can be achieved through selection and further work into developing strategies employing individual identification and DNA markers are warranted. Statement of relevance We adapted an existing statistical control method in an innovative way to estimate genetic parameters for growth traits in abalone, without individual tagging or DNA markers. This method facilitates the transition from simple family selection programs to combined selection programs by providing the necessary inputs for bio-economic modelling to inform the design of more advanced breeding programs.

KW - Haliotis midae

KW - Heritability

KW - Internal reference method

UR - http://www.scopus.com/inward/record.url?scp=84994779212&partnerID=8YFLogxK

U2 - 10.1016/j.aquaculture.2016.10.042

DO - 10.1016/j.aquaculture.2016.10.042

M3 - Journal article

AN - SCOPUS:84994779212

VL - 468

SP - 451

EP - 457

JO - Aquaculture

JF - Aquaculture

SN - 0044-8486

IS - Part 1

ER -