Gonad development and size-at-maturity of silver therapon Leiopotherapon plumbeus (Kner 1864; Teleostei:Terapontidae) in tropical volcanic lakes in south Luzon, Philippines
dc.contributor.author | Denusta, Pastor Jones | |
dc.contributor.author | De Jesus-Ayson, Evelyn Grace | |
dc.contributor.author | Laron, Manuel | |
dc.contributor.author | Aya, Frolan | |
dc.contributor.author | Garcia, Luis Maria | |
dc.coverage.spatial | Philippines | en |
dc.coverage.spatial | Taal, Lake | en |
dc.date.accessioned | 2023-11-10T03:41:55Z | |
dc.date.available | 2023-11-10T03:41:55Z | |
dc.date.issued | 2019-04-19 | |
dc.identifier.citation | Denusta, P. J. T., De Jesus‐Ayson, E. G., Laron, M. A., Aya, F. A., & Garcia, L. M. B. (2019). Gonad development and size‐at‐maturity of silver therapon Leiopotherapon plumbeus (Kner 1864; Teleostei: Terapontidae) in tropical volcanic lakes in south Luzon, Philippines. Journal of Applied Ichthyology, 35(4), 933-943. https://doi.org/10.1111/jai.13915 | en |
dc.identifier.issn | 0175-8659 | |
dc.identifier.uri | https://hdl.handle.net/20.500.14353/302 | |
dc.description.abstract | Gonad development of the silver therapon Leiopotherapon plumbeus in two volcanic crater lake habitats (Sampaloc Lake, Taal Lake) in south Luzon, Philippines was examined during the annual reproductive cycle. The minimum body size-at-maturity of fish in these two lake habitats was also compared. Four gonad development stages were characterized as basis for the classification of ovarian (immature, maturing, mature, spawned) and testicular maturation (immature, maturing, mature) phases. The occurrence of all development stages in individual gonads suggest an asynchronous development whereby advanced stages are recruited continuously from a pool of younger stage germ cells to result in elevated female and male GSI throughout the annual cycle due to active gonadogenesis. Together with the increasing occurrence of advanced stage oocytes and spermatozoa from March until October, the elevated GSI of fish may indicate peak gonadal growth during the onset of the dry season (December–January) for eventual spawning from the beginning (May–June) until the end of the wet season (October–November). In both lake habitats, male fish were smaller than females but, regardless of sex, the minimum size-at-maturity of fish in Sampaloc Lake was significantly smaller than fish in Taal Lake. Overall, asynchronous development during oogenesis and spermatogenesis allows for year-round reproduction of silver therapon, with elevated gonad growth in the dry season in preparation for spawning during the wet season. Compared with fish in Taal Lake, a smaller size-at-maturity of fish in Sampaloc Lake may be a response of the wild fishery stock to long-term high fishing mortality and degradation of the lake habitat. | en |
dc.description.sponsorship | The authors thank the fund support provided by UP NSRI (Project BIO-09-2-06), SEAFDEC/AQD (Project Br-02-F2009B), and the Accelerated Science and Technology Human Resource Development Program of the Philippine Department of Science and Technology. This paper is part of a doctoral dissertation of PJTD submitted to the UP Institute of Biology. Field and laboratory assistance was provided by Ms. Rieziel Ann Bernal. Sampling and processing of specimens comply with existing regulations in the Philippines. There are no sources of conflict of interest by any of the authors of this manuscript. | en |
dc.language.iso | en | en |
dc.publisher | Blackwell Publishing Ltd. | en |
dc.subject | fish oogenesis | en |
dc.subject | gonad development | en |
dc.subject | silver therapon | en |
dc.subject | size-at-maturity | en |
dc.subject | spermatogenesis | en |
dc.subject | volcanic lake | en |
dc.subject.lcsh | Crater lakes | en |
dc.subject.lcsh | Oogenesis | en |
dc.subject.lcsh | Gonads | en |
dc.subject.lcsh | Spermatogenesis in animals | en |
dc.subject.lcsh | Teraponidae | en |
dc.title | Gonad development and size-at-maturity of silver therapon Leiopotherapon plumbeus (Kner 1864; Teleostei:Terapontidae) in tropical volcanic lakes in south Luzon, Philippines | en |
dc.type | Article | en |
dcterms.accessRights | Limited public access | en |
dc.citation.journaltitle | Journal of Applied Ichthyology | en |
dc.citation.volume | 35 | en |
dc.citation.issue | 4 | en |
dc.citation.firstpage | 933 | en |
dc.citation.lastpage | 943 | en |
local.subject.scientificname | Leiopotherapon plumbeus | en |
local.subject.scientificname | Terapontidae | en |
local.subject.scientificname | Teleostei | en |
dc.identifier.doi | 10.1111/jai.13915 | |
local.isIndexedBy | ISI | en |
local.isIndexedBy | Scopus | en |
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