Capture, Handling, and Branding of Ringed Seals

Smith, Thomas G.; Beck, Brian; Sleno, G. A.

doi:10.2307/3800325

Cited by 13 publications

(8 citation statements)

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“…Normally, when one tries to approach seals hauled out on the open ice, they enter the water when one is a great distance away. Netting ringed seals has been tried (Smith et al 1973), but is not feasible for live capturing adult seals in the fast ice. Shooting the seal to retrieve a recording unit is an alternative way of recapturing the seal, but the disadvantage is that one risks losing the seal.…”

Section: Discussionmentioning

confidence: 99%

Monitoring ringed seal (Phoca hispida) activity by means of acoustic telemetry

Lydersen¹

1991

Can. J. Zool.

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LYDERSEN, C. 1991. Monitoring ringed seal (Phoca hispida) activity by means of acoustic telemetry. Can. J. Zool. 69:1 178-1 182. This study was conducted in Kongsfjorden, Svalbard (7g055'N, 12"30rE), from May 6 to 13, 1989. An adult ringed seal (Phoca hispida) female was live captured and equipped with an acoustic depth-time transmitter to obtain information on diving and haulout activities. A total of 153 h continuous activity, including 132 1 diving cycles, was recorded. Of the total time, 38.2% was spent underwater, 16.6% breathing at the surface, and 45.2% hauling out on the ice. Excluding haul-out periods, the seal was submerged for 69.7% and at the surface for 30.3% of the total time spent in the water. Mean dive duration was 2.7 + 2.7 (SD) min, and mean dive depth was 10.6 I+_ 9.0 m. Maximum recorded dive duration was 17 min, and maximum recorded dive depth was 40 m. Recorded activities showed a diurnal pattern, with most of the diving activities in the late afternoon and at night and most of the haul-out activity in the morning and during the day.LYDERSEN, C. 1991. Monitoring ringed seal (Phoca hispida) activity by means of acoustic telemetry. Can. J. Zool. 69 : 1 178-1 182. L'activitC d'un Phoque annelC (Phoca hispida) adulte a CtC suivie du 6 au 13 mai 1989 dans les eaux de Kongsfjorden, Svalbard (7g055'N, 1 2"30rE). Une femelle adulte a Ct C capturCe et munie d'un Cmetteur acoustique de profondeur-temps propre a fournir des donnCes sur les activitCs de plongCe et de sortie de l'eau. Un total de 153 h d7activitC continue, dont 132 1 cycles de plongCe, ont Ct C enregistrCes. Le phoque a pass6 38,2% de ce temps sous I'eau, 16,696 a respirer en surface et 45,2% a se reposer sur la glace. En faisant abstraction des pCriodes passCes sur la glace, le phoque a pass6 69,7% de son temps dans l'eau en plongCe, et 30,396 en surface. La durCe moyenne d'une plongCe a Ct C CvaluCe a 2,7 + 2,7 min (Ccart type), et la profondeur moyenne d'une plongCe, a 10,6 5 9,O m. La plongCe la plus longue a durC 17 min et la profondeur maximale de plongCe a Ct C CvaluCe a 40 m. LiactivitC suivait un rythme journalier : les activitCs de plongCe se faisaient a la fin de l'aprks-midi et durant la nuit et l'animal se reposait sur les glaces surtout le matin et durant le jour.[Traduit par la rCdaction]

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Section: Discussionmentioning

confidence: 99%

Monitoring ringed seal (Phoca hispida) activity by means of acoustic telemetry

Lydersen¹

1991

Can. J. Zool.

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“…Following methods of Smith et al (1973), we captured ringed seals using green, braided nylon nets, with 229 mm (9ʺ) stretched mesh, 25 meshes deep and 100 m in length, and a 2.5 cm diameter float line. Nets were secured at the shore and offshore ends by anchors.…”

Section: Methodsmentioning

confidence: 99%

Fall Migration of Ringed Seals (<i>Phoca hispida</i>) through the Beaufort and Chukchi Seas, 2001–02

Harwood¹,

Smith²,

Auld³

2012

ARCTIC

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In a study examining the range, distribution, and habitat use of the ringed seal, Phoca hispida, in Canada's Western Arctic, eight ringed seals were live-captured, instrumented with satellite-linked (SLTDR-16) transmitters, and released at Cape Parry, Northwest Territories, Canada, on 17-19 September 2001 and 7-8 September 2002. Locations accepted by the filtering process were received from seven of the eight tagged seals (5 subadults, 1 adult female, 1 pup) over periods ranging from 35 to 207 days (mean 99 d, SD 66). Mean rates of travel were 0.91 m/s (SE 0.011, n = 7) in the Canadian Beaufort Sea, 0.92 m/s (SE 0.014, n = 7) offshore of Alaska's North Slope, and 0.79 m/s (SE 0.008, n = 5) in the Chukchi Sea. On average, the seals took 32 days (range 19-56 d) to migrate between Cape Parry and Point Barrow, almost always remaining within 100 km of shore and over the continental shelf or slope, and covering an average migration distance of 2138 km. Dive depths for all groupings were mainly in the 4-80 m range (adult female: 63-73%; subadults: 54-73%; pup: 64-82%), with only the adult female diving deeper than 80 m on occasion, mainly in the Canadian Beaufort Sea (15.1% of her dives). The subadults and pup dove mainly for more than 1 to 5 min (60% and 55%, respectively), while a large proportion of the adult female's dives were longer (34% for > 1 to 5 min; 31% for > 5 to 8 min; 5.4% for > 8 min). The tracks of the westward migrating seals revealed a routing through three political jurisdictions (including oil and gas industry lease areas in all three) over a period of about two months. This pattern highlights the importance of cooperation between the United States, Canada, and Russia in managing this species.

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“…Smith et al (1973) described netting and marking of 229 ringed seals in the western Canadian Arctic in AugustSeptember 1971 and 1972. Their nets were constructed for open water operation and were pulled out at freeze-up.…”

Section: Discussionmentioning

confidence: 99%

Netting and conventional tagging used to study movements of ringed seals (<i>Phoca hispida</i>) in Greenland

Kapel¹,

Christiansen²,

Heide‐Jørgensen

et al. 1998

NAMMCOSP

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Seven studies of netting and tagging of ringed seals (P hoca hispida) in Greenland 1976-1997 are described. The areas of operation were: northern part of the Upernavik area (Northwest Greenland), Kong Oscars Fjord (Northeast Greenland), and Avanersuaq (Thule, North Greenland). Altogether, 135 seals were caught, of which 99 were tagged and released with Dalton Jumbo rototags. Recapture of 38 tagged seals has been reported to date. The recaptures demonstrate movements of ringed seals in Greenland of more than 100km within districts, as well as long-distance movements of more than 1000km from the site of release.

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Capture, Handling, and Branding of Ringed Seals

Cited by 13 publications

References 1 publication

Monitoring ringed seal (Phoca hispida) activity by means of acoustic telemetry

Monitoring ringed seal (Phoca hispida) activity by means of acoustic telemetry

Fall Migration of Ringed Seals (<i>Phoca hispida</i>) through the Beaufort and Chukchi Seas, 2001–02

Netting and conventional tagging used to study movements of ringed seals (<i>Phoca hispida</i>) in Greenland

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