Strandings of northern bottlenose whales, Hyperoodon ampullatus, in the north-east Atlantic

seasonality and diet

Ruth Fernandez*, Graham J. Pierce, Colin D. Macleod, Andrew Brownlow, Robert J. Reid, Emer Rogan, Marian Addink, Robert Deaville, Paul D. Jepson, M. Begona Santos

*Corresponding author for this work

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Peaks in northern bottlenose whale, Hyperoodon ampullatus, strandings are found between August and September in the UK and August and November in The Netherlands, consistent with a hypothesized southward migration. However, results on diet suggest that several whales stranded during these months were not travelling from northern latitudes prior to stranding. We analysed the stomach contents of ten whales stranded in the north-east Atlantic (Scotland, N = 6, England, N = 1, Ireland, N = 2 and The Netherlands, N = 1). All but one of the analysed whales (live-stranded in the River Thames in January 2006) stranded between August and October. Food remains consisted almost entirely of cephalopod mandibles. Twenty-one cephalopod species (16 families) were recorded, the most abundant taxa being Gonatus spp., Teuthowenia spp. and Taonius pavo. No fish and few crustacean remains were found. Small amounts of cephalopod flesh were found in three of the stomachs and none in the others. Given that cephalopod beaks can remain within the stomach for several days, and that there was no evidence of inshore feeding (no coastal species were present among the prey), the whales may not have fed for several days prior to stranding. Three whales had remains of warm-temperate water cephalopods (e.g. Vampyroteuthis infernalis, Heteroteuthis sp.) in their stomachs, while three individuals showed a high diversity of prey in their stomachs, suggesting that several of the whales could have been either travelling north or consistently feeding in temperate latitudes prior to stranding. As previously recorded in other deep diving teuthophagous cetaceans, two animals had ingested small amounts of plastic debris.

Original languageEnglish
Pages (from-to)1109-1116
Number of pages8
JournalJournal of the Marine Biological Association of the United Kingdom
Volume94
Issue number6
Early online date17 Jan 2014
DOIs
Publication statusPublished - Sep 2014

Keywords

  • strandings
  • northern bottlenose whales
  • Hyperoodon ampullatus
  • north-east Atlantic
  • seasonality
  • diet
  • stomach contents
  • sea

Cite this

Strandings of northern bottlenose whales, Hyperoodon ampullatus, in the north-east Atlantic : seasonality and diet. / Fernandez, Ruth; Pierce, Graham J.; Macleod, Colin D.; Brownlow, Andrew; Reid, Robert J.; Rogan, Emer; Addink, Marian; Deaville, Robert; Jepson, Paul D.; Santos, M. Begona.

In: Journal of the Marine Biological Association of the United Kingdom, Vol. 94, No. 6, 09.2014, p. 1109-1116.

Research output: Contribution to journalArticle

Fernandez, R, Pierce, GJ, Macleod, CD, Brownlow, A, Reid, RJ, Rogan, E, Addink, M, Deaville, R, Jepson, PD & Santos, MB 2014, 'Strandings of northern bottlenose whales, Hyperoodon ampullatus, in the north-east Atlantic: seasonality and diet', Journal of the Marine Biological Association of the United Kingdom, vol. 94, no. 6, pp. 1109-1116. https://doi.org/10.1017/S002531541300180X
Fernandez, Ruth ; Pierce, Graham J. ; Macleod, Colin D. ; Brownlow, Andrew ; Reid, Robert J. ; Rogan, Emer ; Addink, Marian ; Deaville, Robert ; Jepson, Paul D. ; Santos, M. Begona. / Strandings of northern bottlenose whales, Hyperoodon ampullatus, in the north-east Atlantic : seasonality and diet. In: Journal of the Marine Biological Association of the United Kingdom. 2014 ; Vol. 94, No. 6. pp. 1109-1116.
@article{c26f0339d511442daf97f0752655af0b,
title = "Strandings of northern bottlenose whales, Hyperoodon ampullatus, in the north-east Atlantic: seasonality and diet",
abstract = "Peaks in northern bottlenose whale, Hyperoodon ampullatus, strandings are found between August and September in the UK and August and November in The Netherlands, consistent with a hypothesized southward migration. However, results on diet suggest that several whales stranded during these months were not travelling from northern latitudes prior to stranding. We analysed the stomach contents of ten whales stranded in the north-east Atlantic (Scotland, N = 6, England, N = 1, Ireland, N = 2 and The Netherlands, N = 1). All but one of the analysed whales (live-stranded in the River Thames in January 2006) stranded between August and October. Food remains consisted almost entirely of cephalopod mandibles. Twenty-one cephalopod species (16 families) were recorded, the most abundant taxa being Gonatus spp., Teuthowenia spp. and Taonius pavo. No fish and few crustacean remains were found. Small amounts of cephalopod flesh were found in three of the stomachs and none in the others. Given that cephalopod beaks can remain within the stomach for several days, and that there was no evidence of inshore feeding (no coastal species were present among the prey), the whales may not have fed for several days prior to stranding. Three whales had remains of warm-temperate water cephalopods (e.g. Vampyroteuthis infernalis, Heteroteuthis sp.) in their stomachs, while three individuals showed a high diversity of prey in their stomachs, suggesting that several of the whales could have been either travelling north or consistently feeding in temperate latitudes prior to stranding. As previously recorded in other deep diving teuthophagous cetaceans, two animals had ingested small amounts of plastic debris.",
keywords = "strandings, northern bottlenose whales, Hyperoodon ampullatus, north-east Atlantic, seasonality, diet, stomach contents, sea",
author = "Ruth Fernandez and Pierce, {Graham J.} and Macleod, {Colin D.} and Andrew Brownlow and Reid, {Robert J.} and Emer Rogan and Marian Addink and Robert Deaville and Jepson, {Paul D.} and Santos, {M. Begona}",
year = "2014",
month = "9",
doi = "10.1017/S002531541300180X",
language = "English",
volume = "94",
pages = "1109--1116",
journal = "Journal of the Marine Biological Association of the United Kingdom",
issn = "0025-3154",
publisher = "Cambridge University Press",
number = "6",

}

TY - JOUR

T1 - Strandings of northern bottlenose whales, Hyperoodon ampullatus, in the north-east Atlantic

T2 - seasonality and diet

AU - Fernandez, Ruth

AU - Pierce, Graham J.

AU - Macleod, Colin D.

AU - Brownlow, Andrew

AU - Reid, Robert J.

AU - Rogan, Emer

AU - Addink, Marian

AU - Deaville, Robert

AU - Jepson, Paul D.

AU - Santos, M. Begona

PY - 2014/9

Y1 - 2014/9

N2 - Peaks in northern bottlenose whale, Hyperoodon ampullatus, strandings are found between August and September in the UK and August and November in The Netherlands, consistent with a hypothesized southward migration. However, results on diet suggest that several whales stranded during these months were not travelling from northern latitudes prior to stranding. We analysed the stomach contents of ten whales stranded in the north-east Atlantic (Scotland, N = 6, England, N = 1, Ireland, N = 2 and The Netherlands, N = 1). All but one of the analysed whales (live-stranded in the River Thames in January 2006) stranded between August and October. Food remains consisted almost entirely of cephalopod mandibles. Twenty-one cephalopod species (16 families) were recorded, the most abundant taxa being Gonatus spp., Teuthowenia spp. and Taonius pavo. No fish and few crustacean remains were found. Small amounts of cephalopod flesh were found in three of the stomachs and none in the others. Given that cephalopod beaks can remain within the stomach for several days, and that there was no evidence of inshore feeding (no coastal species were present among the prey), the whales may not have fed for several days prior to stranding. Three whales had remains of warm-temperate water cephalopods (e.g. Vampyroteuthis infernalis, Heteroteuthis sp.) in their stomachs, while three individuals showed a high diversity of prey in their stomachs, suggesting that several of the whales could have been either travelling north or consistently feeding in temperate latitudes prior to stranding. As previously recorded in other deep diving teuthophagous cetaceans, two animals had ingested small amounts of plastic debris.

AB - Peaks in northern bottlenose whale, Hyperoodon ampullatus, strandings are found between August and September in the UK and August and November in The Netherlands, consistent with a hypothesized southward migration. However, results on diet suggest that several whales stranded during these months were not travelling from northern latitudes prior to stranding. We analysed the stomach contents of ten whales stranded in the north-east Atlantic (Scotland, N = 6, England, N = 1, Ireland, N = 2 and The Netherlands, N = 1). All but one of the analysed whales (live-stranded in the River Thames in January 2006) stranded between August and October. Food remains consisted almost entirely of cephalopod mandibles. Twenty-one cephalopod species (16 families) were recorded, the most abundant taxa being Gonatus spp., Teuthowenia spp. and Taonius pavo. No fish and few crustacean remains were found. Small amounts of cephalopod flesh were found in three of the stomachs and none in the others. Given that cephalopod beaks can remain within the stomach for several days, and that there was no evidence of inshore feeding (no coastal species were present among the prey), the whales may not have fed for several days prior to stranding. Three whales had remains of warm-temperate water cephalopods (e.g. Vampyroteuthis infernalis, Heteroteuthis sp.) in their stomachs, while three individuals showed a high diversity of prey in their stomachs, suggesting that several of the whales could have been either travelling north or consistently feeding in temperate latitudes prior to stranding. As previously recorded in other deep diving teuthophagous cetaceans, two animals had ingested small amounts of plastic debris.

KW - strandings

KW - northern bottlenose whales

KW - Hyperoodon ampullatus

KW - north-east Atlantic

KW - seasonality

KW - diet

KW - stomach contents

KW - sea

U2 - 10.1017/S002531541300180X

DO - 10.1017/S002531541300180X

M3 - Article

VL - 94

SP - 1109

EP - 1116

JO - Journal of the Marine Biological Association of the United Kingdom

JF - Journal of the Marine Biological Association of the United Kingdom

SN - 0025-3154

IS - 6

ER -