A warming Southern Ocean may compromise Antarctic blue whale foetus growth

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F21%3A00542522" target="_blank" >RIV/68081766:_____/21:00542522 - isvavai.cz</a>

Výsledek na webu

<a href="https://bioone.org/journalArticle/Download?fullDOI=10.25225%2Fjvb.20114" target="_blank" >https://bioone.org/journalArticle/Download?fullDOI=10.25225%2Fjvb.20114</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.25225/jvb.20114" target="_blank" >10.25225/jvb.20114</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A warming Southern Ocean may compromise Antarctic blue whale foetus growth

Popis výsledku v původním jazyce

After declining in abundance due to commercial whaling during the 20th century, populations of the Antarctic blue whale (Balaenoptera musculus intermedia) have failed to recover to pre-exploitation levels. Using historical whaling data from 1926-1954, in combination with temperature data for the Southern Ocean, a gamma GLM with temporal dependency was fitted to 20,144 records of B. m. intermedia foetus size using Bayesian inference. There was a negative relationship between antecedent winter sea surface temperature (SST) in the Southern Ocean on foetus size. This relationship is proposed as being mediated by a positive effect of the extent of winter sea ice on Antarctic krill (Euphasia superba) abundance on which B. m. intermedia feed. There was also a positive density-dependent effect of a 'krill surplus' at low B. m. intermedia population sizes. However, the positive effect of a 'krill surplus' at low B. m. intermedia population size on foetus growth was reversed at elevated winter SST due to a proposed negative impact on E. superba recruitment. Projected increases in temperature in the Southern Ocean are predicted to compromise the growth rates of B. m. intermedia foetuses, with implications for the capacity of the subspecies to recover from overexploitation.

Název v anglickém jazyce

A warming Southern Ocean may compromise Antarctic blue whale foetus growth

Popis výsledku anglicky

After declining in abundance due to commercial whaling during the 20th century, populations of the Antarctic blue whale (Balaenoptera musculus intermedia) have failed to recover to pre-exploitation levels. Using historical whaling data from 1926-1954, in combination with temperature data for the Southern Ocean, a gamma GLM with temporal dependency was fitted to 20,144 records of B. m. intermedia foetus size using Bayesian inference. There was a negative relationship between antecedent winter sea surface temperature (SST) in the Southern Ocean on foetus size. This relationship is proposed as being mediated by a positive effect of the extent of winter sea ice on Antarctic krill (Euphasia superba) abundance on which B. m. intermedia feed. There was also a positive density-dependent effect of a 'krill surplus' at low B. m. intermedia population sizes. However, the positive effect of a 'krill surplus' at low B. m. intermedia population size on foetus growth was reversed at elevated winter SST due to a proposed negative impact on E. superba recruitment. Projected increases in temperature in the Southern Ocean are predicted to compromise the growth rates of B. m. intermedia foetuses, with implications for the capacity of the subspecies to recover from overexploitation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10613 - Zoology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Vertebrate Biology

ISSN

2694-7684

e-ISSN

2694-7684

Svazek periodika

70

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

11

Strana od-do

20114

Kód UT WoS článku

000640645200001

EID výsledku v databázi Scopus

2-s2.0-85115127042