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Fishing elevates variability in the abundance of exploited species
The separation of the effects of environmental variability from the impacts of fishing has been elusive, but is essential for sound fisheries management. We distinguish environmental effects fromExpand
The Biology of the Clupeoid Fishes
Publisher Summary Clupeoid populations have undergone striking increases, followed by precipitous and catastrophic declines, which have caused the collapse of the fishing industry. These fluctuationsExpand
Swimming and feeding behavior of larval anchovy Engraulis mordax
The swimming and feeding behavior of laboratory-reared larval anchovy, Engraulis qnordax, was described over the first 30 days of larval life. Estimates were made of cruising speed, proportion ofExpand
Fecundity, Spawning, and Maturity of Female Dover Sole, Microstomus Pacificus, with an Evaluation of Assumptions and Precision
Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA P.O. Box 271, La Jolla, California 92038 Fecundity, spawning, and maturity of female Dover sale Microstomus pacificus, withExpand
Reproductive Timing in Marine Fishes: Variability, Temporal Scales, and Methods
Abstract Reproductive timing can be defined as the temporal pattern of reproduction over a lifetime. Although reproductive timing is highly variable in marine fishes, certain traits are universal,Expand
SWIMMING SPEED, TAIL BEAT FREQUENCY7 TAIL BEAT AMPLITUDE, AND SIZE IN JACK MACKEREL, Trucharzcs symmetricas, AND OTHER FISHES
The tail beat frequency and tail beat amplitude of jack mackerel, Trachurus symmetvicus, 4.5 to 27.7 cm were measured at speeds of 15 to 212 cm/sec. Tail beat amplitude was a constant proportion ofExpand
Measurement of Spawning Frequency in Multiple Spawning Fishes
Methods for estimating the frequency of spawning in natural fuh populations using histological criteria are described using the northern anchovy, Engmulis mordar, as an example. Illustrations andExpand
Byssus drifting and the drifting threads of the young post-larval mussel Mytilus edulis
The long, drifting threads secreted by young post-larval mussels (Mytilus edulis L.) are simple monofilaments, distinct in form and function from the attachment byssus threads. The diameters of bothExpand
THE SPAWNING FREQUENCY OF SKIPJACK TUNA, KATSUWONUS PELAMIS, FROM THE SOUTH PACIFIC
ABSTRACf Histological criteria to age postovulatory follicles were developed from examination of laboratory-spawned skipjack tuna; the criteria were used to estimate the frequency of spawning ofExpand
SPAWNING INCIDENCE AND BATCH FECUNDITY IN NORTHERN ANCHOVY, ENGRAULIS MORDAX 1
Histological criteria were developed to age postovulatory follicles from examination of laboratory­ spawned northern anchovy and used to estimate the frequency of spawning of natural populations.Expand
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