کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6387233 | 1627314 | 2012 | 7 صفحه PDF | دانلود رایگان |

Recruitment of Aristeus antennatus over the species' entire depth range and distribution area in the Mediterranean Sea is described. Because of the dearth of information on the recruitment of deep-sea species in the literature, the findings reported here take on special significance. Samples were collected at depths between 900 and 2800 m on seven trawl surveys using three samplers: an OTMS trawl, an Agassiz bottom frame trawl, and a Macer-Giroq suprabenthic sledge, computing a total of 80, 26 and 14 trawls, respectively. Early juveniles (â¤Â 15 mm CL) were observed to be present down to a depth of 2800 m and to attain maximum percentage abundance between 1350 and 2000 m. Spring was the season of peak abundance for juveniles. Several hypotheses explaining this deep-sea recruitment are discussed, including oceanographic events coupled with enrichment of the bathyal bottoms and competitive exclusion in deep-sea species. Studying the deep-sea recruitment of A. antennatus contributes to our understanding of the species' life history and supplies knowledge essential to proper management and sustainable exploitation of the species.
⺠Deep-sea shrimp A. antennatus' recruitment in its entire depth range is described ⺠Recruitment of A. antennatus occurs mainly between 1050 and 1500 m depth ⺠Juveniles and pre-adult of A. antennatus are present down to 2800 m depth ⺠An ontogenic migration from deep-sea grounds to upper slope is observed ⺠Otter trawl, Agassiz and suprabenthic sled are useful gears for recruitment studies.
Journal: Journal of Marine Systems - Volumes 105â108, December 2012, Pages 145-151