Acta Ichthyologica et Piscatoria 46(3): 263-270, doi: 10.3750/AIP2016.46.3.11
Rapid reproductive analysis and length–weight relations of three reef fishes (Actinopterygii: Perciformes and Tetraodontiformes) from a remote site in Papua New Guinea
expand article infoK. Longenecker, R. Langston, U. Kondio, H. Bolick, M. Mulrooney

Corresponding author: K. Longenecker

© K. Longenecker, R. Langston, U. Kondio, H. Bolick, M. Mulrooney.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation: Longenecker K, Langston R, Kondio U, Bolick H, Mulrooney M (2016) Rapid reproductive analysis and length–weight relations of three reef fishes (Actinopterygii: Perciformes and Tetraodontiformes) from a remote site in Papua New Guinea. Acta Ichthyologica et Piscatoria 46(3): 263-270. https://doi.org/10.3750/AIP2016.46.3.11
Open Access
Abstract
We present length–weight relations (LWR) and use rapid, low-cost histological methods to describe the reproductive biology of three reef fishes from a remote area in Papua New Guinea: the striped monocle bream, Scolopsis lineata Quoy et Gaimard, 1824; the Indian goatfish, Parupeneus indicus (Shaw, 1803); and the blackbelly triggerfish, Rhinecanthus verrucosus (Linnaeus, 1758).  The LWR for Scolopsis lineata is W = 0.0191FL3.02.  Male L50 is 11.2 and female L50 is 13.5 cm FL.  Overall sex ratio is female biased; however, for mature individuals, females dominate size-classes from 13 through 15 cm and males dominate smaller and larger size classes.  This species is a batch-spawning, protogynous hermaphrodite.  The LWR for Parupeneus indicus is W = 0.00904FL3.25.  Male Lm is 14.7 and female L50 is 18.4 cm FL.  Overall sex ratio is 1 : 1; however, for mature individuals, females dominate size-classes from 17 through 22 cm and males dominate smaller and larger size classes.  This species is a batch-spawning gonochore.  BF = 4.62FL2.95.  The LWR for Rhinecanthus verrucosus is W = 0.0257TL2.97.  Male L50 is 13.0 and female L50 is 14.1 cm TL.  Overall sex ratio is female biased; however, mature individuals are male biased ≥ 16.1 cm TL and, effectively, exclusively male ≥ 17.6 cm.  This species is a batch-spawning gonochore.  BF = 3.35 ∙ 10–19TL19.4.
Keywords
size-at-maturity, reproductive mode, size-specific sex ratios, batch fecundity, Morobe Province