Assessment of the whelk (Buccinum undatum L.) population around the Island of Jersey, Channel Isles

Morel, Greg; Bossy, S.F.

doi:10.1016/j.fishres.2003.11.010

Cited by 16 publications

(20 citation statements)

References 12 publications

(13 reference statements)

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“…It is generally found from the shallow subtidal down to a few hundred metres of water depth (Valentinsson et al 1999;Valentinsson 2002;Rosenberg 2009), with a latitudinal range from 38°N to 79°N spanning the North Atlantic and Arctic Oceans (OBIS http://iobis.org/ mapper/?taxon=Buccinumundatum). Buccinum undatum is an important commercial species, providing locally valuable fisheries in several areas around the North Atlantic including the UK, the USA and Canada (Hancock 1967;Morel and Bossy 2004). It has been suggested as a good candidate for aquaculture (Nasution and Roberts 2004) and globally, demand for it is continuously increasing (Department of Marine Resources www.maine.gov/dmr/rm/whelks.html).…”

Section: Introductionmentioning

confidence: 99%

Nurse egg consumption and intracapsular development in the common whelk Buccinum undatum (Linnaeus 1758)

Smith

Thatje

2012

Helgol Mar Res

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Intracapsular development is common in marine gastropods. In many species, embryos develop alongside nurse eggs, which provide nutrition during ontogeny. The common whelk Buccinum undatum is a commercially important North Atlantic shallow-water gastropod. Development is intracapsular in this species, with individuals hatching as crawling juveniles. While its reproductive cycle has been well documented, further work is necessary to provide a complete description of encapsulated development. Here, using B. undatum egg masses from the south coast of England intracapsular development at 6°C is described. Number of eggs, veligers and juveniles per capsule are compared, and nurse egg partitioning, timing of nurse egg consumption and intracapsular size differences through development are discussed. Total development took between 133 and 140 days, over which 7 ontogenetic stages were identified. The number of both eggs and veligers were significantly related to capsule volume, with approximately 1 % of eggs developing per capsule. Each early veliger consumed nurse eggs rapidly over just 3-7 days. Within each capsule, initial development was asynchronous, but it became synchronous during the veliger stage. No evidence for cannibalism was found during development, but large size differences between embryos developing within each capsule were observed, and occasionally 'empty' veligers were seen, which had not successfully consumed any nurse eggs. These results indicate a high level of competition for nurse eggs within each capsule during development in the common whelk. The initial differences observed in nurse egg uptake may affect individual predisposition in later life.

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Section: Introductionmentioning

confidence: 99%

Nurse egg consumption and intracapsular development in the common whelk Buccinum undatum (Linnaeus 1758)

Smith

Thatje

2012

Helgol Mar Res

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“…Based on life history and dispersal behaviour, a strong genetic structure would be expected for Buccinum undatum, raising concerns for the viability of its exploitation, which occurs throughout the geographical range. Indeed, local depletions of fishery stocks have been reported (Valentinsson et al 1999, Morel & Bossy 2004, and if the prediction of strong genetic structure proves correct, recolonisation is likely to be very slow and important local adaptations may be lost. Intriguingly, however, such apparently limited dispersal seems at odds with its broad geographical range (Marko 2004), and suggests some current or historical continuity of populations across thousands of kilometres or occasional migrations of much greater distance than found by Hancock (1963).…”

Section: Introductionmentioning

confidence: 99%

Genetic population structure across a range of geographic scales in the commercially exploited marine gastropod Buccinum undatum

Weetman¹,

Hauser²,

Bayes³

et al. 2006

Mar. Ecol. Prog. Ser.

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Marine invertebrates are exploited increasingly as food resources worldwide, but knowledge of genetic population structure is limited for most commercially valuable taxa. We investigated genetic structure in the widely distributed, subtidal gastropod Buccinum undatum by screening samples from 28 locations at 5 microsatellite loci. Multidimensional scaling and cluster analysis were applied to study macrogeographic structure, and revealed 4 well-supported groupings of populations: Canada, Iceland, Swedish Skaggerak, and a cluster containing most samples from the European continental shelf (hereafter 'Shelf'). A fifth cluster comprising all 5 samples from the Solent (UK) relied on exceptional differentiation of just 2 alleles, which is consistent with significant evidence for recent bottlenecks in this area. Within the Shelf cluster most pairwise tests of differentiation were significant, although the global F ST of 0.014 was very low for a direct-developing species. Our data suggest that use of highly polymorphic markers caused a relatively minor downward bias to F ST , although historical connectivity of populations that are not in migration-drift equilibrium might be more important. However, significant isolation by distance among British North Sea coast samples (F ST = 0.010) is consistent with approach to equilibrium and suggests recent gene flow, probably between semi-continuous populations. At a microgeographic scale, we found migration to be consistently higher from inshore to offshore within 3 separate areas; a factor that may underpin the lower diversity and greater differentiation observed for bay and inlet populations. Such populations might serve as important sources of genetic diversity, but are likely to be particularly vulnerable to exploitation.

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“…Whilst these markets may have declined in recent years, the common whelk has become an integral part of commercial fisheries in both Jersey and French waters within the Bay of Granville area (Morel and Bossy, 2004). Landings in Jersey have increased from 1 ton in the early 1990s to a peak of over 600 tonnes by 2006, decreasing to 217 tonnes in 2012 (States of Jersey Marine Resources Annual Status Report, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Map of area with ten sample stations (e.g. C3 or F1) (after Morel and Bossy, 2004) and seven Granville Bay Statistical Reporting Areas (e.g. 27E7JE).…”

Section: Introductionmentioning

confidence: 99%

Whelk (Buccinum undatum L.) stocks around the Island of Jersey, Channel Islands: Reassessment and implications for sustainable management

Shrives¹,

Pickup

Morel³

2015

Fisheries Research

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Assessment of the whelk (Buccinum undatum L.) population around the Island of Jersey, Channel Isles

Cited by 16 publications

References 12 publications

Nurse egg consumption and intracapsular development in the common whelk Buccinum undatum (Linnaeus 1758)

Nurse egg consumption and intracapsular development in the common whelk Buccinum undatum (Linnaeus 1758)

Genetic population structure across a range of geographic scales in the commercially exploited marine gastropod Buccinum undatum

Whelk (Buccinum undatum L.) stocks around the Island of Jersey, Channel Islands: Reassessment and implications for sustainable management

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