Life cycles of some Arctic amphipods

ABSTRACT: Life cycles, number of eggs per female, minimal adult female length and re− productive costs are presented for 18 species of Amphipoda from the West Spitsbergen area, 77–79°N. Fifteen species incubated eggs during the polar night and released their off− spring in early April. Three species...

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Bibliographic Details
Main Authors: Jan Marcin Węsławski, Joanna Legeżyńska, Instytut Oceanologii Polskiej Akademii Nauk
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
Key words
Arctic amphipods
breeding
Arctic
polar night
Spitsbergen
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.598.9321
http://www.polar.pan.pl/ppr23/ppr23-253.pdf
Description
Summary:ABSTRACT: Life cycles, number of eggs per female, minimal adult female length and re− productive costs are presented for 18 species of Amphipoda from the West Spitsbergen area, 77–79°N. Fifteen species incubated eggs during the polar night and released their off− spring in early April. Three species incubated eggs from late spring till late summer. The appearance of the youngest juveniles, indicating the hatching period, is presented for 63 species. Most of the species studied were K strategists, with large eggs of over 1 mm diame− ter; only one species (Hyperoche medusarum) was r – strategist.

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