Geographic variation in the life history of lane snapper Lutjanus synagris, with new insights from the warm edge of its distribution
Permanent lenke
https://hdl.handle.net/10037/30418Dato
2023-06-20Type
Journal articleTidsskriftartikkel
Peer reviewed
Sammendrag
Research on life-history variations in widely distributed fish species is needed to understand global warming impacts on populations and to improve fisheries management advice. The lane snapper Lutjanus synagris (Linnaeus, 1758) is commercially important to fisheries in the Western Central Atlantic, where spread information on its life-history traits is available. We studied growth, age, reproduction and mortality of lane snapper in the Guatemalan Caribbean, the warmest part of its distribution range, and collated the new information with published data in a latitudinal analysis extending between 18°S and 30°N. Longevity was estimated at 11 years, and von Bertalanffy growth parameters were asymptotic length (Linf) 45.6 and 42.2 cm for females and males, respectively, the growth coefficient (K) was 0.1 year−1 and the theoretical age at zero length (t0) was −4.4 years. Lane snapper grew slowest in April, prior to the rainy season, and at the onset of the reproductive season, which lasted from May to October. Fifty percent of female and male lane snappers matured at 23 and 17 cm, corresponding to 3.5 and 2.4 years of age respectively. A regional multivariate analysis found seawater temperature to be an important driver of life-history variation. Lane snapper lifespan was shorter at the warm edge of its distribution range, and maximum size and peak reproductive investment were negatively related to sea surface temperature. The trade-offs in lane snapper life-history traits and phenology likely enhance its fitness to differing environments. Interpolation from the present regional estimates to less-studied regions of the Caribbean is useful for preliminary understanding of reaction norms and harvest potentials.
Forlag
WileySitering
Andrade H, Vihtakari, Santos aj. Geographic variation in the life history of lane snapper Lutjanus synagris, with new insights from the warm edge of its distribution. Journal of Fish Biology. 2023Metadata
Vis full innførselSamlinger
Copyright 2023 The Author(s)