SATELLITE TRACKING OF GRAY SEALS (HALICHOERUS-GRYPUS)

SATELLITE TRACKING OF GRAY SEALS (HALICHOERUS-GRYPUS)
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DOI:
10.1111/j.1469-7998.1992.tb03839.x
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发表时间:
1992-02-01
期刊:
影响因子:
2
通讯作者:
FEDAK, MA
FEDAK, MA
中科院分区:
生物学3区
文献类型:
--
作者:
MCCONNELL, BJ;CHAMBERS, C;FEDAK, MA

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1985年至1989年期间,在唐娜努克(英国南亨伯赛德)将三种类型的Argos卫星发射器附着在灰海豹(Halichoerus grypus)上,以调查它们的运动。 对于前两个发送器(A和B),将整个包装连接到密封背面。 海豹A被跟踪了29天,尽管它位于Donna Nook东南150公里的沙洲上,但没有获得海上位置。 变送器B和C使用浸没传感器来调节变送器。 海豹B被跟踪了51天,并保持在距离唐娜努克40公里的范围内。 有几个地点是在海上获得的,但都在唐娜努克的10公里范围内。 发射机C装有一个头戴式天线,以增加海豹在海上时的定位次数。 这只海豹被跟踪了111天,在海上平均每天定位9.1个位置。 它使用了两个相距265公里的地点,并在这两个地点之间进行了三次过境。 在第二次访问北方现场时,它多次前往55公里外的海域。 其余的时间大部分都花在离牵引点10公里的范围内。 游泳速度的估计与最低运输成本所需的值一致。
Three types of Argos satellite transmitter were attached to grey seals (Halichoerus grypus) at Donna Nook (South Humberside, UK) between 1985 and 1989 in order to investigate their movements. With the first two transmitters (A and B) the entire package was attached to the seal's back. Seal A was tracked for 29 days but although it was located on sandbanks up to 150 km south-east of Donna Nook, no locations were obtained at sea. Transmitters B and C used a submergence sensor to regulate transmissions. Seal B was tracked for 51 days and remained within 40 km of Donna Nook. A few locations were obtained at sea but all within 10 km of Donna Nook. Transmitter C incorporated a head-mounted aerial in order to increase the number of location fixes when the seal was at sea. This seal was tracked for 111 days, producing an average of 9.1 location fixes per day while at sea. It used two sites 265 km apart and undertook three transits between them. On the second visit to the northern site it made several trips up to 55 km out to sea. The majority of the remainder of the time was spent within 10 km of the haulout sites. Estimates of swimming speed were consistent with values required for minimum cost of transport.