Reproductive Biology of Pipefish Syngnathus typhle and S. abaster (Syngnathidae) from Western Mediterranean Sea

Rodríguez, Araceli; Grau, Amàlia; Castro-Fernández, Julia; Castejón‐Silvo, Inés; Terrados, Jorge; Morales‐Nin, Beatriz; Arechavala-López, Pablo

doi:10.1134/s0032945221040147

Cited by 7 publications

(5 citation statements)

References 36 publications

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“…Twenty to twenty-five species/genera exhibited new recruits, including those that spawn in the open sea (Ionian Sea) (Mugilidae, S. aurata, and D. labrax [9]) and those that spawn in the coastal zone (A. boyeri, A. fasciatus, and Sygnathus sp. [17][18][19]) or in the deeper zone (e.g., P. kerathurus [10,20]) of the gulf. Although A. anguilla and C. labrosus make up a considerable portion of the lagoon fishing catches [7], these species were not found in the samplings of this study.…”

Section: Discussionmentioning

confidence: 99%

Diversity of Fish and Decapod Fry in the Coastal Zone of Amvrakikos Gulf

Katselis,

Vlahos,

Koutsikopoulos

et al. 2024

Diversity

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Amvrakikos Gulf and its surrounding coastal lagoons are of primary importance for the local biodiversity and fishing activities. Fish species inhabited the coastal lagoons based on the seasonal ongoing migration movements of fry and adult fish individuals from the sea towards the lagoons. Information on the early stages of fish and decapod species in the Amvrakikos Gulf is limited only to the planktonic ontogenetic stages and reproduction biology, respectively. The aim of this study was to describe the spatial distribution of fry from commercially important fish and decapod species in the coastal zone of Amvrakikos Gulf. The seasonal appearance of the early stage of the most commercially important fish species caught in the coastal zone of the gulf ranged from one to four seasons, depending on the species. Individuals of all ontogenetic stages (fry, juveniles, and adults) were reported for several species (A. boyeri, A. fasciatus, S. abaster, S. tyfle, and B. ocellaris), indicating that these species may be regarded as residents in the coastal zone, providing habitats for their entire life cycle. The average relative abundance of the species/genera exhibited no differences compared to other Greek brackish waters. The species composition in the Amvrakikos Gulf at 10 cm and above was in agreement with the transitional nature of the area, with permanent and occasional species present. The present study emphasizes the importance of the coastal zone as a nursery habitat for commercially important species.

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Section: Discussionmentioning

confidence: 99%

Diversity of Fish and Decapod Fry in the Coastal Zone of Amvrakikos Gulf

Katselis,

Vlahos,

Koutsikopoulos

et al. 2024

Diversity

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“…All shes smaller than 22.0 cm SL are male and the maximum size of sh collected was 48.3 cm SL. Data on sex ratio of sh in a particular ecosystem is essential to understand relationship among population, mortality and sh stocks [36,49,50,51,52]. The ideal sex ratio between male and female of the population is 1:1, in exception of under a particular circumstance [51].…”

Section: Discussionmentioning

confidence: 99%

Reproductive characteristics of the hermaphroditic four-finger threadfin, Eleutheronema tetradactylum (Shaw, 1804), in tropical coastal waters

Soe

Iqbal

Lim

et al. 2023

Preprint

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This study investigates reproductive traits of the hermaphroditic four-finger threadfin, Eleutheronema tetradactylum, along the coasts of Thailand during January 2021 and January 2022. Fish sample from Pattani Bay, Thailand was collected to assess sex ratio, gonadosomatic index (GSI), maturity stage and fecundity. Additional samples from other provinces were used to investigate length and weight at first sex change (Ls50 and Ws50) and length at first maturity (Lm50). It was found that the overall sex ratio for male and female was 1:0.69 with male predominated throughout the year. This fish spawned the whole year round with peak during moderate rainy season. Results from histological examination confirmed its protandrous hermaphrodite posing multiple spawning behavior. The average fecundity was 1.85 x 105 ± 1.05 x 105 eggs and positively related with standard length, body weight, gonad weight and egg diameter (P < 0.05). The Ls50 and Ws50 for fishes from Pattani Bay and Samut Prakan province were 27.58 cm, 419.39 g and 29.71 cm, 457.28 g, respectively. The Lm50 of male from Pattani Bay and Samut Prakan were 25.78 cm and 25.56 cm, respectively, considered larger than those from Satun and Nakhon Sri Thammarat provinces. The Lm50 of female from Pattani Bay was slightly smaller than that of Samut Prakan province. This study provides fundamental information on the reproductive characteristics of E. tetradactylum and can be implemented for both management of natural fish stock and future aquaculture development.

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“…As highlighted by IUCN World Conservation Congress Resolution 95 (WCC-2020-Res-095), syngnathid populations should be further protected, as human activities together with climate changes are causing widespread degradation of these species' habitats on a worldwide level, while also underlining the need to enhance available knowledge and thus promote conservation actions. Globally, most of the current information is based on studies on a few populations that have been extensively researched, e.g., [17,20,[45][46][47][48][49][50][51][52]. Most of this attention, however, has been dedicated to seahorses, and it was gained after severe declines in populations [7,15,51,[53][54][55][56] whose causes are still not fully elucidated [12,15,51].…”

Section: Discussionmentioning

confidence: 99%

Abundance, Distribution, and Habitat Preference of Syngnathid Species in Sabaudia Lake (Tyrrhenian Sea)

Lazic,

Pierri,

Corriero

et al. 2023

Diversity

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Syngnathids are considered flagship species of estuarine and coastal environments. However, most of the Mediterranean species are still classified as data-deficient (DD) at a global level according to the IUCN Red List of Threatened Species. In central Italy, several areas host potentially suitable habitats for syngnathids but have not been previously reported in the literature; the estimation of population parameters and habitat partitioning at these sites may help to assess their conservation status. In this study, we investigated the abundance, distribution, and habitat preferences of sympatric populations of Hippocampus hippocampus, H. guttulatus, Syngnathus abaster, and Nerophis ophidion in Sabaudia Lake (Tyrrhenian Sea, Italy). While confirming the primary importance of a healthy coastal habitat, we retrieved hints about species ecology and habitat use. The species distribution in the study area highlights the role of habitat complexity in supporting local populations of these sensitive species.

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Reproductive Biology of Pipefish Syngnathus typhle and S. abaster (Syngnathidae) from Western Mediterranean Sea

Cited by 7 publications

References 36 publications

Diversity of Fish and Decapod Fry in the Coastal Zone of Amvrakikos Gulf

Diversity of Fish and Decapod Fry in the Coastal Zone of Amvrakikos Gulf

Reproductive characteristics of the hermaphroditic four-finger threadfin, Eleutheronema tetradactylum (Shaw, 1804), in tropical coastal waters

Abundance, Distribution, and Habitat Preference of Syngnathid Species in Sabaudia Lake (Tyrrhenian Sea)

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