Reproductive biology of the black marlin, Istiompax indica, off southwestern and eastern Taiwan

Sun, Chi‐Lu; Chang, Hung-Yi; Liu, Tsung‐Yun; Yeh, Su‐Ling; Chang, Yi‐Jay

doi:10.1016/j.fishres.2014.09.006

Cited by 10 publications

(17 citation statements)

References 16 publications

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“…() at lengths >234 cm L LJF and a similar observation was noted by Kume & Joseph () in the eastern Pacific Ocean. Sexual dichotomy by size in billfishes has been previously documented by numerous authors: X. gladius (Wang et al., ; Wang et al., ); blue marlin Makaira nigricans Lacépède 1802 (Shimose et al., ; Sun et al., ); black marlin Istiompax indica (Cuvier 1832) (Sun et al., . ); sailfish Istiophorus platypterus (Shaw 1792) (Chiang et al., ; and white marlin Kajikia albida (Poey 1860) in the Atlantic Ocean (Arocha & Bárrios, ).…”

Section: Discussionmentioning

confidence: 98%

“…For istiophorid billfishes in the Pacific Ocean, the batch fecundity was estimated for M. nigricans at 2·11–13·5 million eggs (Sun et al., ) and 0·98–5·85 million eggs (Shimose et al., ); I. indica at 3·2–32 million eggs (Sun et al., ); and I. platypterus at 0·29–2·49 million eggs (Chiang et al., ), 1·8–5·1 million eggs (Eldridge & Wares, ) and 0·42–2·5 million eggs (Hernández‐Herrera et al., ). Nakamura () indicated that the fecundities of billfishes ranged between 1 and 1·2 million eggs and varied by species and size.…”

Section: Discussionmentioning

confidence: 99%

“…The results of this study indicated that females with larger body sizes are more likely to have an extended spawning season than females with smaller body sizes. Furthermore, previous studies reported that batch fecundity tends to be related to female body sizes, with larger females of several species of billfishes having higher batch fecundity (Chiang et al ., ; Sun et al., ; Sun et al., ). Although there were only nine samples available for spawning frequency analysis in this study, which was not considered to be sufficient for estimating spawning frequency by body length classes, it seems reasonable to assume that spawning frequency may also relate to female body size, i.e .…”

Section: Discussionmentioning

confidence: 99%

“…Length and mass data of 1260 K. audax (536 females, 683 males, 41 sex‐undetermined), including 236 pairs of ovaries, were collected by random sampling on a monthly basis at the Tungkang, Singkang and Nanfangao fish markets, Taiwan, from July 2004 to September 2010. Relatively low numbers of samples were collected in August to November, however, due to the switch of some Tungkang‐based longliners from the fishing area off south‐eastern Taiwan to the South China Sea (Sun et al ., ). All samples were caught by offshore longline, gillnet and harpoon fisheries operating in the western Pacific Ocean (Fig.…”

Section: Methodsmentioning

confidence: 99%

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Reproductive biology of female striped marlin Kajikia audax in the western Pacific Ocean

Chang

Sun

Yeh

et al. 2017

Journal of Fish Biology

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Length and mass data for 1260 (536 females, 683 males, 41 sex unknown) striped marlin Kajikia audax were collected at the fish markets of Tungkang, Singkang and Nanfangao from July 2004 to September 2010. Of these samples, 534 gonads (236 females and 298 males) ranging from 95 to 206 cm in eye-to-fork length (L EF ) and 8 to 88 kg in round mass (M R ), were collected. Chi-square tests indicated sex ratios were homogeneous among months in 2004 and 2006-2008, but not in 2005, 2009 and 2010; and there were significant differences in sex ratio by size. The overall sex ratio (R S ) differed significantly from the expected 0·5. Kajikia audax are sexually dimorphic and the proportions of females increased with size between 140 and 210 cm L EF . Reproductive activity was assessed using a gonado-somatic index (I G ), external appearance of the gonads and histological examination and results indicated that the spawning season occurred from April to August with a peak in June to July. Based on histological observations and the distribution of oocyte diameters, K. audax are multiple spawners and their oocytes develop asynchronously. The estimated length-at-50% maturity (L EF50 ) was c. 181 cm (c. 4·8 years of age) for females. The proportion of reproductively active females in the spawning season with ovaries containing postovulatory follicles (0·27) indicated that they spawned every 3·7 days on average. The hydrated oocyte method estimated mean ± S.D. batch fecundity (F B ) to be 4·4 ± 2·02 million eggs; average relative fecundity was 53·6 ± 13·9 oocytes g −1 M R ; and the average annual fecundity was 181·3 ± 48·3 million eggs. The parameters estimated in this study are key information for stock assessments of K. audax in the north-western and central Pacific and will contribute to the conservation, management and sustainable yield of this species.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Reproductive biology of female striped marlin Kajikia audax in the western Pacific Ocean

Chang

Sun

Yeh

et al. 2017

Journal of Fish Biology

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“…I would also like to give thanks to the Game Fishing Association of Australia and Queensland Game Fishing Association which have been long-term supporters of my research, with special thanks to Evan Jones and Mick Meiers whose interest and dedication to billfish has been instrumental. (Domeier and Speare 2012;Sun et al 2015). Table 5.2.…”

Section: Declaration By Authormentioning

confidence: 99%

The global biology, ecology and phylogenetic status of black marlin (Istiompax indica)

Williams¹

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The black marlin [Istiompax indica (Morrow, 1968)] is one of the largest teleost fish and has a continuous distribution throughout tropical waters of the Indo-Pacific. Throughout its range, I. indica has been documented to undertake wide-ranging, transoceanic and transequatorial movements. In coastal waters and on the high seas I. indica may be targeted by commercial and artisanal fisheries, but the majority of the world's landings are as a by-product species of tuna longline and purse seine fisheries. Due to its large size and 'fighting qualities', I. indica is also valued as a prized sport or game fish in recreational fisheries. While considerable effort to understand the level of exploitation of high value species such as the tunas has occurred, the stock status for many other species caught on the high seas such as many sharks, dolphinfish and istiophorid billfishes remain unassessed. This lack of attention is reflected by I. indica being listed as 'Data Deficient' on the International Union for Conservation of Nature Red List. The lack of attention and data available on I. indica extends to biological, ecological, taxonomic and fisheries catch records, which in turn hinders stock assessments and management. This thesis aims to improve the biological and ecological knowledge of I. indica, thereby providing a stronger foundation for assessments and management of stocks globally. PUBLICATIONS DURING CANDIDATURE Peer-reviewed papers and book chaptersA Cohen, D. Spooner and SM. Williams (In Press). Examining the importance of marine transport and transport infrastructure and the initiatives adopted for managing potential impacts whilst enhancing transport services. Moreton Bay and Catchment.

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The reproductive biology of female crimson sea bream Evynnis tumifrons off the southwestern coast of Kyushu, Japan

et al. 2019

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Reproductive biology of the black marlin, Istiompax indica, off southwestern and eastern Taiwan

Cited by 10 publications

References 16 publications

Reproductive biology of female striped marlin Kajikia audax in the western Pacific Ocean

Reproductive biology of female striped marlin Kajikia audax in the western Pacific Ocean

The global biology, ecology and phylogenetic status of black marlin (Istiompax indica)

The reproductive biology of female crimson sea bream Evynnis tumifrons off the southwestern coast of Kyushu, Japan

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