Reproductive biology of the loliginid squid, Alloteuthis subulata, in the north-east Atlantic and adjacent waters
A study of the reproductive biology of the loliginid squid, Alloteuthis subulata in the North Sea, Irish Sea and Portuguese waters was carried out. A predominance of small squid (<50 mm ML) during autumn was observed in all three areas. Multi-modal size-frequency distributions were apparent in bo...
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EDP Sciences
2009
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ftoceanrep:oai:oceanrep.geomar.de:7558 2023-05-15T17:38:33+02:00 Reproductive biology of the loliginid squid, Alloteuthis subulata, in the north-east Atlantic and adjacent waters Hastie, L. C. Nyegaard, M. Collins, M. A. Moreno, A. Pereira, J. M. F. Piatkowski, Uwe Pierce, G. J. 2009 text https://oceanrep.geomar.de/id/eprint/7558/ https://oceanrep.geomar.de/id/eprint/7558/1/686_Hastie_2009_ReproductiveBiologyOfTheLoliginid_Artzeit_pubid11183.pdf https://doi.org/10.1051/alr/2009002 en eng EDP Sciences https://oceanrep.geomar.de/id/eprint/7558/1/686_Hastie_2009_ReproductiveBiologyOfTheLoliginid_Artzeit_pubid11183.pdf Hastie, L. C., Nyegaard, M., Collins, M. A., Moreno, A., Pereira, J. M. F., Piatkowski, U. and Pierce, G. J. (2009) Reproductive biology of the loliginid squid, Alloteuthis subulata, in the north-east Atlantic and adjacent waters. Open Access Aquatic Living Resources, 22 . pp. 35-44. DOI 10.1051/alr/2009002 <https://doi.org/10.1051/alr%2F2009002>. doi:10.1051/alr/2009002 info:eu-repo/semantics/openAccess Article PeerReviewed 2009 ftoceanrep https://doi.org/10.1051/alr/2009002 2023-04-07T14:54:56Z A study of the reproductive biology of the loliginid squid, Alloteuthis subulata in the North Sea, Irish Sea and Portuguese waters was carried out. A predominance of small squid (<50 mm ML) during autumn was observed in all three areas. Multi-modal size-frequency distributions were apparent in both sexes. The greatest complexity was observed in Portuguese waters, with males exhibiting possibly four or more modal size classes. Sexually mature squid were found throughout the year, with generally more mature squid in spring-summer and fewer in autumn-winter. In Portuguese waters, maturity in both sexes peaked in spring, whereas maturity in the other areas peaked in summer. Similar sizes-at-maturity were observed, with male squid maturing over a greater size range (40–125 mm ML) than females (30–50 mm ML). An apparent secondary peak in male maturity at 65 mm ML suggests two different size-maturation patterns in Portuguese waters. Estimates of potential fecundity in the Irish Sea ranged from 2200–13 500 eggs per female. Mean egg diameters of 0.45 mm and 1.55 mm were recorded for developing oocytes and mature ova, respectively. Three to four modal size classes of oocytes were apparent in each ovary. There was some indication of latitudinal effects on growth, maturation and reproduction of A. subulata across its geographic range. The greater complexity of size-structure in warmer waters suggests that water temperature may be the main factor involved, possibly through shorter incubation times, faster growth and maturation rates and extended spawning periods. Article in Journal/Newspaper North East Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Aquatic Living Resources 22 1 35 44 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
A study of the reproductive biology of the loliginid squid, Alloteuthis subulata in the North Sea, Irish Sea and Portuguese waters was carried out. A predominance of small squid (<50 mm ML) during autumn was observed in all three areas. Multi-modal size-frequency distributions were apparent in both sexes. The greatest complexity was observed in Portuguese waters, with males exhibiting possibly four or more modal size classes. Sexually mature squid were found throughout the year, with generally more mature squid in spring-summer and fewer in autumn-winter. In Portuguese waters, maturity in both sexes peaked in spring, whereas maturity in the other areas peaked in summer. Similar sizes-at-maturity were observed, with male squid maturing over a greater size range (40–125 mm ML) than females (30–50 mm ML). An apparent secondary peak in male maturity at 65 mm ML suggests two different size-maturation patterns in Portuguese waters. Estimates of potential fecundity in the Irish Sea ranged from 2200–13 500 eggs per female. Mean egg diameters of 0.45 mm and 1.55 mm were recorded for developing oocytes and mature ova, respectively. Three to four modal size classes of oocytes were apparent in each ovary. There was some indication of latitudinal effects on growth, maturation and reproduction of A. subulata across its geographic range. The greater complexity of size-structure in warmer waters suggests that water temperature may be the main factor involved, possibly through shorter incubation times, faster growth and maturation rates and extended spawning periods. |
format |
Article in Journal/Newspaper |
author |
Hastie, L. C. Nyegaard, M. Collins, M. A. Moreno, A. Pereira, J. M. F. Piatkowski, Uwe Pierce, G. J. |
spellingShingle |
Hastie, L. C. Nyegaard, M. Collins, M. A. Moreno, A. Pereira, J. M. F. Piatkowski, Uwe Pierce, G. J. Reproductive biology of the loliginid squid, Alloteuthis subulata, in the north-east Atlantic and adjacent waters |
author_facet |
Hastie, L. C. Nyegaard, M. Collins, M. A. Moreno, A. Pereira, J. M. F. Piatkowski, Uwe Pierce, G. J. |
author_sort |
Hastie, L. C. |
title |
Reproductive biology of the loliginid squid, Alloteuthis subulata, in the north-east Atlantic and adjacent waters |
title_short |
Reproductive biology of the loliginid squid, Alloteuthis subulata, in the north-east Atlantic and adjacent waters |
title_full |
Reproductive biology of the loliginid squid, Alloteuthis subulata, in the north-east Atlantic and adjacent waters |
title_fullStr |
Reproductive biology of the loliginid squid, Alloteuthis subulata, in the north-east Atlantic and adjacent waters |
title_full_unstemmed |
Reproductive biology of the loliginid squid, Alloteuthis subulata, in the north-east Atlantic and adjacent waters |
title_sort |
reproductive biology of the loliginid squid, alloteuthis subulata, in the north-east atlantic and adjacent waters |
publisher |
EDP Sciences |
publishDate |
2009 |
url |
https://oceanrep.geomar.de/id/eprint/7558/ https://oceanrep.geomar.de/id/eprint/7558/1/686_Hastie_2009_ReproductiveBiologyOfTheLoliginid_Artzeit_pubid11183.pdf https://doi.org/10.1051/alr/2009002 |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/7558/1/686_Hastie_2009_ReproductiveBiologyOfTheLoliginid_Artzeit_pubid11183.pdf Hastie, L. C., Nyegaard, M., Collins, M. A., Moreno, A., Pereira, J. M. F., Piatkowski, U. and Pierce, G. J. (2009) Reproductive biology of the loliginid squid, Alloteuthis subulata, in the north-east Atlantic and adjacent waters. Open Access Aquatic Living Resources, 22 . pp. 35-44. DOI 10.1051/alr/2009002 <https://doi.org/10.1051/alr%2F2009002>. doi:10.1051/alr/2009002 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1051/alr/2009002 |
container_title |
Aquatic Living Resources |
container_volume |
22 |
container_issue |
1 |
container_start_page |
35 |
op_container_end_page |
44 |
_version_ |
1766139049829990400 |