Comparative growth and development of autumn and spring spawned Atlantic herring larvae reared in large enclosed ecosystems

Abstract

Populations of Atlantic herring larvae Clupea harengus harengus L. were reared in 300 m3 in situ plastic enclosures for about 60 d

Plankton dynamics and larval herring growth, drift and survival in a frontal area

“…Assuming a Qlo for growth of 2.3 (Checkley 1984) and allowing for 20% shrinkage due to capture and preservation, this corresponds to ca 0.28 mm d-' growth in preserved length at 12°C. Maximum growth rates in natural populations are generally of this magnitude (McGurk 1984, I(lsrboe & Munk 1986 and references therein), although springspawned larvae tend to achieve higher rates of growth (Marshall et al 1937, Oiestad & Moksness 1981, Gamble et al 1985. Only the largest larvae in the present study approached the maximum growth rate which suggests that the majority of the larvae were limited by food availability at this time.…”

Contribution of larval growth rate vairability to the recruitment of the Bay of Málaga anchovy (SW Mediterranean) during 2000-2001 spawning seasons

“…Maternal effects can also be due to parental genetic qualities, as observed in herring (Høie et al, 1999). The measurement of egg dimensions was thought adequate to assess quality traits of the parental population and enhanced larval characteristics that may favour survival, as documented extensively in the literature for a number of species (Marteinsdottir and Steinarsson, 1998;Gamble et al, 1985;Moodie et al, 1989;Duarte and Alcaraz, 1989). The area, perimeter, major and minor axis of 68 and 62 anchovy eggs showed significantly greater egg area, perimeter and major axis of the eggs spawned during 2001 (p<0.01).…”

Predation by Atlantic herring, sprat, and sandeels on herring larvae in large enclosures

“…Larvae came from autumn-spawning adults collected on Aberdeen Bank, northeastern Scotland. Gonads were collected on 21 August 1987 and eggs were fertilized in Aberdeen within 24 h, then incubated at 7 "C, as described by Gamble et al (1985). Developing eggs were transported to rearing facilities at Loch Ewe, northwestern Scotland, on 27 August and maintained at 7 "C. Eggs hatched on 6 September except for one lot w h c h hatched 3 d later.…”