The influence of trammel net fishing on the Rabbit fish (Siganus rivulatus) stocks in Suez Gulf, Red Sea, Egypt.

Saber, Mahmoud A.; Gewida, Ahmed G. A.

doi:10.21608/ejabf.2020.79142

Cited by 9 publications

(5 citation statements)

References 9 publications

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“…For instance, in Western Australia rabbitfish are not commonly targeted and only are caught as bycatch, yet the patterns between tropical and range‐extending populations held. Fisheries effect on the traits of S. rivulatus may be low in the Red Sea, because individuals were larger (>250 mm) despite that trammel nets used in the region select for fishes >150 mm (Saber & Gewida, 2020); however, we cannot discard a potential fishery effect in the Mediterranean Sea since nets target fishes >200 mm, which could include the oldest and bigger individuals (Cerim et al, 2020; Soykan, 2020). Nonetheless, the global analyses of maximum sizes were robust.…”

Section: Discussionmentioning

confidence: 99%

Maximization of fitness by phenological and phenotypic plasticity in range expanding rabbitfishes (Siganidae)

Zarco‐Perello

Fairclough

Dowling

et al. 2022

Journal of Animal Ecology

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Global warming is modifying the phenology, life‐history traits and biogeography of species around the world. Evidence of these effects have increased over recent decades; however, we still have a poor understanding of the possible outcomes of their interplay across global climatic gradients, hindering our ability to accurately predict the consequences of climate change in populations and ecosystems. We examined the effect that changes in biogeography can have on the life‐history traits of two of the most successful range‐extending fish species in the world: the tropical rabbitfishes Siganus fuscescens and Siganus rivulatus. Both species have established abundant populations at higher latitudes in the northern and southern hemispheres and have been identified as important ecological engineers with the potential to alter the community structure of seaweed forests (Laminariales and Fucales) in temperate regions. Life‐history trait information from across their global distribution was compiled from the published literature and meta‐analyses were conducted to assess changes in (i) the onset and duration of reproductive periods, (ii) size at maturity, (iii) fecundity, (iv) growth rates, (v) maximum body sizes and (vi) longevity in populations at the leading edge of range expansion in relation to sea surface temperature and primary productivity (a common proxy for nutritional resource levels). Populations at highest latitudes had shortened their reproductive periods and reduced growth rates, taking longer to reach sexual maturity and maximum sizes, but compensated this with higher fecundity per length class and longer lifespans than populations in warmer environments. Low primary productivity and temperature in the Mediterranean Sea resulted in lower growth rates and body sizes for S. rivulatus, but also lower length at maturity, increasing life‐time reproductive output. The results suggest that plasticity in the phenology and life‐history traits of range‐expanding species would be important to enhance their fitness in high latitude environments, facilitating their persistence and possible further poleward expansions. Quantifying the magnitude and direction of these responses can improve our understanding and ability to forecast species redistributions and its repercussions in the functioning of temperate ecosystems.

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Section: Discussionmentioning

confidence: 99%

Maximization of fitness by phenological and phenotypic plasticity in range expanding rabbitfishes (Siganidae)

Zarco‐Perello

Fairclough

Dowling

et al. 2022

Journal of Animal Ecology

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“…In the Red Sea and the Suez Gulf, small-scale vessels play an essential socioeconomic role and have a great history (Saber & Gewida, 2020& 2022. There are approximately 318 boats, which represent 85% of the total Suez Gulf fleet (GAFRD, 2019).…”

Section: Demersal Species; Trammel Net; Gill Net; Soak Timementioning

confidence: 99%

Discards of small-scale fisheries (SSF) in the Suez Gulf, Red Sea, Egypt

al.¹

2022

Egypt. J. of Aquatic Biolo. and Fish.

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Discarding is one of the most top challenges in fisheries management, because it is a waste of resources, a source of uncertainty for fisheries scientists and decision-makers, and a factor impacting biodiversity and community (Alverson et al., 1994). The capture of immature individuals and non-marketable species, on the other hand, may raise the catch composition's discard ratio. Because trammel netting is widely considered as a nonlethal capture technique, trammel nets are frequently used when assessing populations of rare fishes (Hubert, 1996). Three layers of multifilament netting constitute a trammel net, with a small-mesh inner netting layer between two layers with largest mesh.Gill-nets are often used in small-scale fisheries because they require little in the way of equipment and are successful at catching fish populations that are widely dispersed (Reis & Pawson, 1992).

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“…Therefore, many past and present studies have addressed different factors of biology, management and population dynamics of the species studied. (El-Gammal, 1988;Mehanna & Abdallah, 2002;Osman et al, 2019 andGewida, 2020).…”

Section: Introductionmentioning

confidence: 99%

Age, Growth and mortality of the rabbit fish Siganus rivulatus (Forsskål 1775) from the Egyptian Mediterranean coast off Alexandria, Egypt

al.¹

2022

Egypt. J. of Aquatic Biolo. and Fish.

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The influence of trammel net fishing on the Rabbit fish (Siganus rivulatus) stocks in Suez Gulf, Red Sea, Egypt.

Cited by 9 publications

References 9 publications

Maximization of fitness by phenological and phenotypic plasticity in range expanding rabbitfishes (Siganidae)

Maximization of fitness by phenological and phenotypic plasticity in range expanding rabbitfishes (Siganidae)

Discards of small-scale fisheries (SSF) in the Suez Gulf, Red Sea, Egypt

Age, Growth and mortality of the rabbit fish Siganus rivulatus (Forsskål 1775) from the Egyptian Mediterranean coast off Alexandria, Egypt

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