In:
PeerJ, PeerJ, Vol. 10 ( 2022-09-22), p. e14077-
Kurzfassung:
This present study provides an overview of the reproductive traits, including ovarian development, spawning season, size at maturity ( L m ), and fecundity of Acentrogobius viridipunctatus – a high economic value fish in the Vietnamese Mekong Delta (VMD). A total of 432 females were collected using trawl nets from January to December 2020 at four sites, including Long Huu-Tra Vinh (LHTV), Trung Binh-Soc Trang (TBST), Dien Hai-Bac Lieu (DHBL), and Tan Thuan-Ca Mau (TTCM). The ovarian diameter was seen to increase from 2.09 (stage I) to 6.57 mm (stage V). Histological analysis showed that the goby was a multi-spawner due to the different oocyte stages found in stages IV and V of ovaries. It can release eggs all year-round due to the monthly appearance of ovarian stages IV and V during the study period, with the main peak in the 2–4 months of the wet season noted with the highest value of gonadosomatic index at that time. The L m increased from 6.6 cm at TBST to 9.4 cm at TTCM. This species displayed relatively high fecundity, ranging from 5,481 to 130,683 eggs/female. The average fecundity of this fish was 27,698 ± 7,983 eggs/female at LHTV, 46,592 ± 7,264 eggs/female at TBST, 23,271 ± 4,985 eggs/female at DHBL, and 31,408 ± 2,515 eggs/female at TTCM. Egg diameter ranged from 0.45 ± 0.01 at DHBL to 0.50 ± 0.01 at TBST. For sustainable exploitation, local governments should ask the fishers to avoid catching fish during the main spawning period, and the fish length at first capture should be 〉 L m .
Materialart:
Online-Ressource
ISSN:
2167-8359
DOI:
10.7717/peerj.14077/fig-1
DOI:
10.7717/peerj.14077/fig-2
DOI:
10.7717/peerj.14077/fig-3
DOI:
10.7717/peerj.14077/fig-4
DOI:
10.7717/peerj.14077/fig-5
DOI:
10.7717/peerj.14077/fig-6
DOI:
10.7717/peerj.14077/fig-7
DOI:
10.7717/peerj.14077/fig-8
DOI:
10.7717/peerj.14077/table-1
DOI:
10.7717/peerj.14077/table-2
DOI:
10.7717/peerj.14077/table-3
DOI:
10.7717/peerj.14077/supp-1
Sprache:
Englisch
Verlag:
PeerJ
Publikationsdatum:
2022
ZDB Id:
2703241-3
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