Ecology and life history traits of the benthopelagic mysid Boreomysis oparva from the eastern tropical Pacific oxygen minimum zone

Abstract

ABSTRACT-The ecology and life h~story traits of Boreomysis oparva, a recently described benthopelagic mysid, were examined from the seamount Volcano 7 which penetrates into the oxygen minimum zone. In the near-bottom waters, B. oparva was very abundant at the lower summ~t In the oxygen minimum zone (<0.2 m1 O2 I-'). It decreased in abundance with increasing depth and Increasing oxygen at the flank and was absent from the base of Volcano 7. Length distribution of free-living stages was continuous, from 4 to 26 mm, and similar at the lower summit and flank. This and the presence of larvae of all stages suggest continuous rather than seasonal reproduction. Reproduct~ve females with developing larvae were more abundant at the lower summit than the flank. This new oxygen minimum zone mysid has relationships of egg volume and clutch size to female body length similar to other mesoand bathypelagic mysids.

Adaptation and potential culture of wild Amphipods and Mysids as potential live feed in aquaculture: a review

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Population dynamics and reproductive biology of the mysid <i>Orientomysis japonica</i> in Tango Bay, Japan

“…Occurrences of a large overwintering generation and a small summer generation found in O. japonica agree with the general traits of mysid species in mid-latitude regions (Mauchline 1980). Within mysid species, larger individuals generally produce more, and larger, eggs (Saltzman 1996). Therefore, because females are larger at lower temperatures, brood size and egg size also tend to be larger at lower temperatures (Murano 1964, Toda et al 1982, Yamada & Yama shita 2000.…”

Biodiversidade, distribuição, alimentação e papel trófico de misídeos marinhos (Crustacea, Peracarida, Mysida)

“…Fecundation occurs externally in the marsupium, the structure where females carry their embryos during the entire larval development (Tattersall & Tattersall 1951;. The number of embryos in the marsupium varies inter-and intraspecifically according to female size Biju & Panampunnayil 2010;, embryo size (Saltzman 1996;Hanamura et al 2008), and seasonally, with larger brood sizes usually occurring during warmer months . Embryos per female generally range from <5 to 245, this figure being usually higher for coastal and epipelagic species than for oceanic ones .…”