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Schroeder R, Petermann A, Schwingel PR, Correia AT. Biological patterns of reproduction of the Brazilian sardine Sardinella brasiliensis in the purse seine fishery of Southwest Atlantic Ocean: A long-term assessment. Mar Environ Res 2024; 197:106457. [PMID: 38519355 DOI: 10.1016/j.marenvres.2024.106457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 03/10/2024] [Accepted: 03/14/2024] [Indexed: 03/24/2024]
Abstract
Recent estimates of the size at first maturity (L50) of Sardinella brasiliensis showed contradictory results with a decreasing in the fish stock biomass encompassed by increasing values of L50. The methodological approach used hereby allowed to separate sardines classified in the virginal maturity stage from those categorized in the recovery stage, and ready for one next spawning event. This study evaluated the hypothesis of the existence of separated stocks experiencing distinct environmental conditions and fishing pressures which may have altered L50 estimates using a robust dataset based on biological samples collected along the entire species distribution area in the southeast-south Brazilian coast [Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR), Santa Catarina (SC) and Rio Grande do Sul (RS)] between 2000 and 2018. A reclassification of the gonadal maturity stages provided a more realistic estimate of L50. Combining biological, reproductive, fishing data and the mean temperature of the catch (MTC), the leave-one-out classification correctly re-assigned individuals with an overall accuracy of 85% [100% (RJ), 45% (SP), 99% (PR), 99% (SC) and 82% (RS)]. The connectivity between the local populations of S. brasiliensis off RJ (23°S) and the southern populations is limited, contrasting to spatial structured semi-discrete population-units found between SP and RS (24°S-30°S). The northern extreme population-unit (RJ, 22°S-23°S) showed an expressive reduction of L50, and a negative correlation was detected between the increasing MTC values and the abundance of early maturing individuals and recruits of the species. Stock specific L50 estimates seemed to act as indicators of long term environmental fluctuations.
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Affiliation(s)
- Rafael Schroeder
- Laboratório de Ecossistemas Aquáticos e Pesqueiros (LEAP). Escola Politécnica. Universidade do Vale do Itajaí. R. Uruguai 458, Centro 88302-901, Itajaí, Brazil; Laboratório de Estudos Marinhos Aplicados (LEMA). Escola Politécnica. Universidade do Vale do Itajaí (UNIVALI). Rua Uruguai 458, Centro, 88302-901, Itajaí, Brazil; Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR). Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos S/N, 4550-208, Matosinhos, Portugal.
| | - Angélica Petermann
- Laboratório de Ecossistemas Aquáticos e Pesqueiros (LEAP). Escola Politécnica. Universidade do Vale do Itajaí. R. Uruguai 458, Centro 88302-901, Itajaí, Brazil
| | - Paulo R Schwingel
- Laboratório de Ecossistemas Aquáticos e Pesqueiros (LEAP). Escola Politécnica. Universidade do Vale do Itajaí. R. Uruguai 458, Centro 88302-901, Itajaí, Brazil
| | - Alberto T Correia
- Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR). Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos S/N, 4550-208, Matosinhos, Portugal; Escola de Ciências da Vida e do Ambiente da Universidade de Trás-os-Montes e Alto Douro (ECVA-UTAD), Quinta dos Prados, 5000-801, Vila Real, Portugal; Instituto de Ciências Biomédicas Abel Salazar da Universidade do Porto (ICBAS-UP), Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
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Soe KK, Iqbal TH, Lim A, Wang WX, Tsim KWK, Takeuchi Y, Petchsupa N, Hajisamae S. Reproductive characteristics of the hermaphroditic four-finger threadfin, Eleutheronema tetradactylum (Shaw, 1804), in tropical coastal waters. BMC ZOOL 2023; 8:22. [PMID: 37723576 PMCID: PMC10507980 DOI: 10.1186/s40850-023-00181-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 08/31/2023] [Indexed: 09/20/2023] Open
Abstract
This study investigated the reproductive traits of the hermaphroditic four-finger threadfin, Eleutheronema tetradactylum, along the coasts of Thailand during January to December 2021. Fish samples were collected from Pattani Bay, Thailand to assess the sex ratio, gonadosomatic index (GSI), maturity stage and fecundity. Additional fish samples were also collected from other areas to evaluate the length and weight at first sex change (Ls50 and Ws50) and length at first maturity (Lm50). The overall sex ratio for male and female was 1:0.69 with male being predominant throughout the year. Threadfin fish spawn the whole year round with peaks during moderate rainy and heavy rainy seasons. Histological examination confirmed its protandrous hermaphrodite posing multiple spawning habits. The average fecundity was 1.85 × 105 ± 1.05 × 105 eggs and positively related with standard length, body weight, gonad weight, and egg diameter (p < 0.05). The Ls50 and Ws50 were 27.58 cm and 419.39 g, and 29.71 cm and 457.28 g, for fish from Pattani Bay and Samut Prakan province, respectively. The Lm50 of male from Pattani Bay and Samut Prakan province were 25.78 cm and 25.56 cm, respectively, which were larger than those from Satun and Nakhon Sri Thammarat provinces. The Lm50 of females from Pattani Bay was smaller than that from Samut Prakan province. This study provided fundamental information on the reproductive characteristics of E. tetradactylum, which can be implemented to support management of natural fish stock and aquaculture development.
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Affiliation(s)
- Kay Khine Soe
- Faculty of Science and Technology, Prince of Songkla University, Muang, Pattani, 94000, Thailand
| | - Teuku Haris Iqbal
- Faculty of Science and Technology, Prince of Songkla University, Muang, Pattani, 94000, Thailand
- Department of Fisheries Resources Utilization, Faculty of Marine and Fisheries, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia
| | - Apiradee Lim
- Faculty of Science and Technology, Prince of Songkla University, Muang, Pattani, 94000, Thailand
| | - Wen-Xiong Wang
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Karl W K Tsim
- Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Yutaka Takeuchi
- Noto Center for Fisheries Science and Technology, Faculty of Biological Science and Technology, Kanazawa University, Ossaka, Noto-Cho, Ishikawa, Japan
| | - Nirattisai Petchsupa
- Faculty of Science and Technology, Prince of Songkla University, Muang, Pattani, 94000, Thailand
| | - Sukree Hajisamae
- Faculty of Science and Technology, Prince of Songkla University, Muang, Pattani, 94000, Thailand.
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Dinh QM, Nguyen THD, Truong NT, Doan DX, Nguyen TTK. Ovarian development, spawning season, size at maturity and fecundity of Acentrogobius viridipunctatus (Valenciennes, 1837) in the Vietnamese Mekong Delta. PeerJ 2022; 10:e14077. [PMID: 36168436 PMCID: PMC9509675 DOI: 10.7717/peerj.14077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 08/27/2022] [Indexed: 01/20/2023] Open
Abstract
This present study provides an overview of the reproductive traits, including ovarian development, spawning season, size at maturity (Lm ), 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 Lm 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 >Lm .
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Affiliation(s)
- Quang Minh Dinh
- Department of Biology, School of Education, Can Tho University, Can Tho, Vietnam
| | - Ton Huu Duc Nguyen
- Department of Biology, School of Education, Can Tho University, Can Tho, Vietnam
| | - Ngon Trong Truong
- Department of Molecular Biotechnology, Biotechnology Research and Development Institute, Can Tho University, Can Tho, Vietnam
| | - Diep Xuan Doan
- Medicinal Chemistry, Hi-tech Agriculture & Bioactive Compounds Research Group, School of Engineering and Technology, Van Lang University, Ho Chi Minh City, Vietnam
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Dinh QM, Truong NT, Tran NS, Nguyen THD. Ovarian and spawning reference, size at first maturity and fecundity of Glossogobius giuris caught along Vietnamese Mekong Delta. Saudi J Biol Sci 2022; 29:1911-1917. [PMID: 35280526 PMCID: PMC8913340 DOI: 10.1016/j.sjbs.2021.10.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 09/27/2021] [Accepted: 10/14/2021] [Indexed: 11/04/2022] Open
Abstract
This study investigates the ovarian development, spawning patterns, maturity size and fecundity of the goby Glossogobius giuris–a commercial fish in the Vietnamese Mekong Delta–based on the data analysis of 659 individuals. Specimens were caught using trawl nets from four sites representing freshwater (Cai Rang, Can Tho) to salinized regions in the dry season (Long Phu, Soc Trang), and brackish water regions (Hoa Binh, Bac Lieu and Dam Doi, Ca Mau) over the 12 months of 2020. Histological analysis showed that it was a multi-spawner as different stages of oocytes appeared in mature ovaries. The fish could spawn throughout the year, with a peak in April at the freshwater region and in September at salinized and brackish areas as mature ovaries appeared monthly during the studied period and gonadosomatic index displayed the highest value in April and in September, respectively. This goby’s primary egg releasing time tended to be regulated by salinity changes over the four sampling sites. Likewise, size at first maturity of this species could be related to the salinity variation as this value was the longest in freshwater (6.14 ± 0.17) and the shortest in the salinization region (4.82 ± 0.66). Batch fecundity is measured at 5,118–100,003 eggs/female and related to fish length and weight (r2 > 0.76). Findings can be useful for the development of fish conservation strategies and artificial reproducing studies.
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Affiliation(s)
- Quang M Dinh
- Department of Biology, School of Education, Can Tho University, Can Tho, Viet Nam
| | - Ngon T Truong
- Biotechnology Research and Development Institute, Can Tho University, Xuan Khanh Ward, Can Tho, Viet Nam
| | - Nam S Tran
- Department of Environmental Sciences, College of Environment and Natural Resources, Can Tho University, Can Tho, Viet Nam
| | - Ton H D Nguyen
- Department of Biology, School of Education, Can Tho University, Can Tho, Viet Nam
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De Cubber L, Lefebvre S, Fisseau C, Cornille V, Gaudron SM. Linking life-history traits, spatial distribution and abundance of two species of lugworms to bait collection: A case study for sustainable management plan. Mar Environ Res 2018; 140:433-443. [PMID: 30055836 DOI: 10.1016/j.marenvres.2018.07.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 07/17/2018] [Accepted: 07/18/2018] [Indexed: 06/08/2023]
Abstract
Arenicola spp. are marine benthic polychaetes dug for bait by anglers. Without regulation, this activity can lead to the decrease of lugworms' population meanwhile affecting the physical characteristics of the beach and the biodiversity. Here, we identified through morphology and genetics two species of lugworms, Arenicola marina and A. defodiens, within a Marine Protected Area of the Eastern English Channel (France). For each species, abundance and spatial distribution were assessed using a stratified random sampling and interpolation at four studied sites, as well as some life-history traits. These data were compared to lugworms' collection data to estimate its sustainability and to provide potential management measures. At one site, A. marina was present in large numbers on the higher and middle shore, whereas A. defodiens occupied the lower shore. At the other sites, both species co-occurred on the lower shore, and A. marina individuals were less numerous and lacking recruits. Spawning periods for A. marina occurred in early autumn and in late autumn for A. defodiens. The size at first maturity of A. marina was at 3.8 cm of trunk length (between 1.5 and 2.5 years old). One site (Au) appeared in need for management when linking abundance data with bait collection, where harvest of both species represented ∼14% of the total amount of lugworms and was above the carrying capacity of the beach for A. marina. The retail value associated to lugworm harvesting within the MPA was estimated at the same level as the shrimp retail value. Our results highlight the need for some fishery regulations.
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Affiliation(s)
- Lola De Cubber
- Univ. Lille, Univ. Littoral Côte d'Opale, CNRS, UMR 8187 Laboratoire d'Océanologie et de Géosciences, 62930 Wimereux, France
| | - Sébastien Lefebvre
- Univ. Lille, Univ. Littoral Côte d'Opale, CNRS, UMR 8187 Laboratoire d'Océanologie et de Géosciences, 62930 Wimereux, France; IFREMER, HMMN Laboratoire de ressources halieutiques, quai Gambetta, 62200 Boulogne sur mer, France
| | - Charline Fisseau
- Parc naturel marin des estuaires picards et de la mer d'Opale, Agence des Aires Marines Protégées, 62200 Boulogne sur mer, France
| | - Vincent Cornille
- Univ. Lille, Univ. Littoral Côte d'Opale, CNRS, UMR 8187 Laboratoire d'Océanologie et de Géosciences, 62930 Wimereux, France
| | - Sylvie Marylène Gaudron
- Univ. Lille, Univ. Littoral Côte d'Opale, CNRS, UMR 8187 Laboratoire d'Océanologie et de Géosciences, 62930 Wimereux, France; Sorbonne Univ., UFR 918 & UFR 927, 75005 Paris, France.
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