Rapid reproductive analysis and length – weight relation for red - bellied fusilier, Caesio cuning, and longfin emperor, Lethrinus erythropterus (Actinopterygii: Perciformes: Caesionidae and Lethrinidae) from a remote village in Papua New Guinea

• Autorzy: Longenecker K. , Langston R. , Bolick H. , Kondio U.
• Języki publikacji: EN

Abstrakty

EN

We present length–weight relations (LWR) and use rapid, low-cost histological methods to describe the reproductive biology of the red-bellied fusilier, Caesio cuning (Bloch, 1791), and the longfin emperor, Lethrinus erythropterus Valenciennes, 1830, based on 137 and 139 specimens, respectively, collected from a remote area in Papua New Guinea. The LWR for C. cuning is W = 0.0208FL3.0322. We estimate male L50 at 12.6 cm FL and female L50 at 15.3 cm FL. Overall sex ratio of mature individuals is not significantly different from 1 : 1; however, sex-ratio does vary with length. Females dominate size-classes from 17 through 20 cm and males are more abundant in smaller and larger size classes. The species is a batch-spawning gonochore. Batch fecundity is an exponential function of length BF = 0.1163FL4.2796. The LWR for L. erythropterus is W = 0.0145FL3.0976 for all specimens, but the length–weight relation differs between sexes. We estimate minimum size-at-maturity for males at 19.2 cm FL, and female L50 at 20.4 cm FL. Overall sex ratio of mature individuals is not significantly different from 1 : 1; however sex-ratio does vary with length. Males dominate size classes > 21 cm. The species is a batch-spawning, protogynous hermaphrodite.

• Wydawca: -
• Czasopismo: Acta Ichthyologica et Piscatoria
• Rocznik: 2014
• Tom: 44
• Numer: 1
• Opis fizyczny: p.75-84,fig.,ref.

Twórcy

autor

Longenecker K.

• Department of Natural Science, Bishop Museum, 1525 Bernice Street, Honolulu, HI, 96817, USA

autor

Langston R.

• Department of Natural Science, Bishop Museum, 1525 Bernice Street, Honolulu, HI, 96817, USA
• Department of Natural Sciences, Windward Community College, Kaneohe, Hawaii, USA

autor

Bolick H.

• Department of Natural Science, Bishop Museum, 1525 Bernice Street, Honolulu, HI, 96817, USA

autor

Kondio U.

• Kamiali Wildlife Management Area, Lababia, Morobe Province, Papua New Guinea

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