Reproductive biology of the orangefin ponyfish Photopectoralis bindus (Valenciennes, 1835) off Mangaluru coast, Karnataka

Rawat, Shobha; Kumar, Jitendra; Benakappa, S.; Sonwal, Mahesh Chand; Naik, Kumar

doi:10.21077/ijf.2019.66.2.81002-17

Cited by 7 publications

(7 citation statements)

References 7 publications

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“…The figure of 54.88% was lower than that found in other studies of Indian mackerel (Rastrelliger kanagurta) that used truss morphology [13,20]. This may have been because the truss network system is highly effective at capturing creature shape [24]. However, this study used conventional morphometrics as part of our preliminary identification of the short mackerel population.…”

Section: Resultsmentioning

confidence: 60%

“…The morphometric measurements of the short mackerels; weight, total length, standard length, folk length, head length, post -orbital length, pre -dorsal length, pre -pelvic length, 1 st dorsal to 2 nd dorsal length, pelvic to anal length, pre -anal length, head depth, and greatest Khan province, Chumphon province, and Surat Thani province depth, were analyzed (Figure 2). These 12 morphometrics are common characteristics and have been the principal source of evidence for evolutionary and taxonomic investigations [24].…”

Section: Methodsmentioning

confidence: 99%

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Stock Identification of Short Mackerel (Rastrelliger brachysoma) in the Upper and Middle Gulf of Thailand by Morphological Characters

Viboonkit

Boonmee

Thotsagotphairee

et al. 2023

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Rastrelliger brachysoma, a short mackerel, is a significant pelagic fish that is common in the fisheries in the Gulf of Thailand. The management of fish stocks is a prerequisite for fish conservation strategies and profitable fisheries. Morphological character differences between stocks of species provide a method for identifying fish stocks. This study was aimed to identify stock population of short mackerel in the Upper and Middle Gulf of Thailand. The fish specimens were collected from four different locations: Chonburi and Prachuap Khiri Khan (central provinces of Thailand), Chumphon and Surat Thani (southern provinces of Thailand). Twelve morphometric characters of fish were assessed to determine the stock populations by stepwise discriminant analysis. The results showed that 12 morphometric characters were significantly different among the four populations. In the discriminant function analysis, the first function explained 61.30% of total variations, whereas the 2nd and 3rd functions were 26.50% and 12.20%, respectively. The characters included total length, standard length, folk length, head length, post – orbital length, pre – dorsal length, pre – pelvic length, 1st dorsal to 2nd dorsal length, pelvic to anal length, pre – anal length, head depth, and greatest depth, all of which can be used to differentiate these populations. According to the results of the discriminant analysis, the populations of short mackerel were predicted and subsequently classified with an accuracy rate of 54.88%.

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Section: Resultsmentioning

confidence: 60%

Section: Methodsmentioning

confidence: 99%

Stock Identification of Short Mackerel (Rastrelliger brachysoma) in the Upper and Middle Gulf of Thailand by Morphological Characters

Viboonkit

Boonmee

Thotsagotphairee

et al. 2023

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“…According to the morphometric and meristic characteristics, they found that there is high variation between the locality groups belonging to the samples of C. kais. Rawat et al (2017) studied the meristic characteristics and their variations among the population of splendid pony fish, Eubleekaria splendens, along the Indian coast. They claimed that depending on their locations and the coast, fish had different numbers of pectoral fin rays.…”

Section: Discussionmentioning

confidence: 99%

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2022

IJFAR

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Eighteen Sarpa salpa and fifteen Dentex gibbous fish collected randomly from the artisanal catch of Benghazi landing site, eastern Libya (32°36' N 20°03' E), during fall and winter of 2019 were used in the present study. Morphogenic features, and 21 key morphometric and 6 key meristic parameters were established for each fish. S. salpa was fusiform with a terminal mouth, narrow caudal peduncle and bifurcate caudal fin. The body was silvery white at the belly side, grading into silvery black at the dorsal side, and horizontal yellow to black stripes extended from the head region to the caudal peduncle. D. gibbosus was less fusiform with large eyes and a lunate caudal peduncle, the mouth was almost terminal, and the body was silvery but slightly pinkish and lighter at the belly side. S. salpa was heavier and longer than D. gibbosus, all its morphometric parameters were significantly higher than those of D. gibbosus except for the eye diameter and the mouth gape. This trend existed even when the parameters were related to total fish length as a ratio to eliminate the effect of size. The majority of binary pairs of morphometric parameters of S. salpa, and D. gibbosus, correlated strongly and positively with each other. Morphometric parameters located within the head region were related to the head length by linear and power regressions, and parameters located outside the head region were related to total fish length by similar regressions. Almost all regressions for both fish were positive and highly significant, indicating that all the parameters increased as the fish grew. The "b" value of the power length-weight regression indicated negative allometric growth for both fish; that of S. salpa was 2.715, and that of D. gibbosus was 2.246. The differences in morphometric traits of both fish were discussed in relation to modes of feeding and swimming, camouflage, and habitat. The Fulton condition factors were 1.733 and 1.247 in order. These factors did not change significantly during fish growth. Almost all the meristic parameters did not correlate with fish length, meaning that they were conservative features and can be used to establish meristic forms. The meristic forms derived were:

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“…The morphometric characters of fish species are influenced by genotype and environmental factors. Moreover, identification of stock with pronounced phenotypic and genetic differentiation among fish populations within a species serves to facilitate managing the stock separately, to determine stock-wise population abundance, and to accomplish the objectives of fisheries stock assessment by modelling (Rawat et al 2017). Moreover, morphometric characters are considered to be phenetic characters (characters of adaptive variation) and habitat variables directly influence the phenotype of an organism (Vidalis et al 1997, Bears et al 2008, Pigliucci 2005.…”

Section: Introductionmentioning

confidence: 99%

Morphometric variation of Spicara flexuosum Rafinesque, 1810 (Teleostei: Sparidae) inhabiting the Sea of Marmara, the Aegean and the Mediterranean Coast of Türkiye

Şalcıoğlu

2023

OandHS

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In the present study, intraspecific morphometric distribution of Spicara flexuosum was investigated along the five locations on the Turkish coast based on eight morphological characters. A total of 116 samples were obtained along the Turkish coasts (Istanbul, Yalova [Armutlu], Izmir, Mersin and Antalya) by using trawlers and the handline fishing method within the period in 2014–2015. Principal component analysis and the dendrogram-based Euclidean distance method were used to evaluate different morphometric traits among five locations. The most important ratios of the morphometric loading characters were the head length to interorbital distance, head length to eye diameter, maximum body height two to head height, and head height to head length. The classification matrix based on the discriminant function analysis showed that 94.7% of original grouped were correctly classified. Principal component and cluster analysis showed the existence of two morphologically differentiated groups of S. flexuosum. First one composed of Istanbul and Yalova and the second one consisted of Izmir, Mersin and Antalya. This study is the first description of the intraspecific distribution of morphometric characters for S. flexuosum along the Turkish coast as well as the Mediterranean region for fisheries management purposes.

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Reproductive biology of the orangefin ponyfish Photopectoralis bindus (Valenciennes, 1835) off Mangaluru coast, Karnataka

Cited by 7 publications

References 7 publications

Stock Identification of Short Mackerel (Rastrelliger brachysoma) in the Upper and Middle Gulf of Thailand by Morphological Characters

Stock Identification of Short Mackerel (Rastrelliger brachysoma) in the Upper and Middle Gulf of Thailand by Morphological Characters

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Morphometric variation of Spicara flexuosum Rafinesque, 1810 (Teleostei: Sparidae) inhabiting the Sea of Marmara, the Aegean and the Mediterranean Coast of Türkiye

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