Does fragmented river connectivity alter the reproductive behavior of the potamodromous fish Alburnus vistonicus?

Mouchlianitis, Foivos Alexandros; Bobori, Dimitra; Tsakoumis, Emmanouil; Sapounidis, A.; Kritikaki, Efpraxia; Ganias, Konstantinos

doi:10.1007/s10750-021-04621-x

Cited by 6 publications

(8 citation statements)

References 45 publications

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“…Life history flexibility, as exemplified by partial migration, increases the capacity of species to respond and adapt to novel environmental conditions (Chapman, Brönmark, et al., 2011). For example, if habitat fragmentation increases migratory costs, then partially migratory species may still be able to complete their lifecycles within a single habitat (Mouchlianitis et al., 2021). However, individual life history variation is likely to decrease if anthropogenic activities (e.g.…”

Section: Discussionmentioning

confidence: 99%

Monsoonal wet season influences the migration tendency of a catadromous fish (barramundi Lates calcarifer)

Roberts,

Morrongiello,

Morgan

et al. 2023

Journal of Animal Ecology

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Many animals exhibit partial migration, which occurs when populations contain coexisting contingents of migratory and resident individuals. This individual‐level variation in migration behaviour may drive differences in growth, age at maturity and survival. Therefore, partial migration is widely considered to play a key role in shaping population demography. Otolith chemistry and microstructural analysis were used to identify the environmental‐ and individual‐specific factors that influence migratory behaviour in the facultatively catadromous barramundi (Lates calcarifer) at two distinct life history stages: firstly, as juveniles migrating upstream into fresh water; and secondly, as adults or sub‐adults returning to the estuarine/marine spawning habitat. Monsoonal climate played an important role in determining the migration propensity of juveniles: individuals born in the driest year examined (weak monsoon) were more than twice as likely to undergo migration to freshwater than those born in the wettest (strong monsoon) year. In contrast, the ontogenetic timing of return migrations to the estuary by adults and sub‐adults was highly variable and not strongly associated with the environmental parameters examined. We propose that scarce resources within saline natal habitats during lower rainfall years may provide an ecological incentive for juveniles to migrate upstream, whereas more abundant resources in higher rainfall years may promote resident life histories within estuaries. We conclude that inter‐annual climatic variation, here evidenced by monsoonal strength, likely plays an important role in driving the persistence of diversified life histories within wild barramundi populations.

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Section: Discussionmentioning

confidence: 99%

Monsoonal wet season influences the migration tendency of a catadromous fish (barramundi Lates calcarifer)

Roberts,

Morrongiello,

Morgan

et al. 2023

Journal of Animal Ecology

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“…In temperate conditions, represented, e.g., by inland waters of Central Europe, such migrations are known for many potamodromous fish species 2 , 3 . Seasonal fish migrations are aimed at searching for resources such as spawning and foraging sites 4 – 6 , refuges 7 , and/or to manifest a nomadic lifestyle 8 . They are influenced mainly by photoperiod and/or temperature, as an increase in daylight enhances the production of reproductive hormones for the upcoming season, and an increase in temperature facilitates the movement of poikilotherm fish 2 , 9 , 10 .…”

Section: Introductionmentioning

confidence: 99%

“…To allocate resources, Cyprinids migrate predominantly in spring 11 , 12 , whilst Salmonids upstream migrations occur mostly in summer and autumn, followed by downstream descent to refuge locations for wintering 3 , 13 . Apart from riverine environment, seasonal fish migrations occur between lentic and lotic environments, e.g., fish migrate from lakes to tributaries 5 , 6 , 14 , 15 . Similarly, cyclic fish migrations are reported between artificial reservoirs and its tributaries 6 , 14 , 16 , 17 .…”

Section: Introductionmentioning

confidence: 99%

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Effects of physical parameters on fish migration between a reservoir and its tributaries

Pfauserová

Brabec

Slavík

et al. 2022

Sci Rep

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Reservoirs interrupt natural riverine continuity, reduce the overall diversity of the environment, and enhance the spread of non-native fish species through suitable environments. Under favourable conditions, invasive species migrate to tributaries to benefit from local resource supplies. However, the changes in physical conditions in reservoirs that motivate fish species to migrate remain poorly understood. We analysed migration between a reservoir and its tributary in three non-native (asp Leuciscus aspius, ide Leuciscus idus, and bream Abramis brama) and two native (chub Squalius cephalus and pike Esox lucius) species equipped with radio tags. This 5-year study revealed that an increasing day length was the most general predictor of migration into the tributary in all observed species except E. lucius. Only L. aspius responded to the substantially increasing water level in the reservoir, while the migration of L. idus and S. cephalus was attenuated. Abramis brama and S. cephalus occurred more frequently in tributaries with an increase in temperature in the reservoir and vice versa, but if the difference in temperature between the reservoir and its tributary was small, then A. brama did not migrate. Our results showed that migration from the reservoir mainly followed the alterations of daylight, while responses to other parameters were species specific. The interindividual heterogeneity within the species was significant and was not caused by differences in length or sex. Our results contribute to the knowledge of how reservoirs can affect the spread of non-native species that adapt to rapid human-induced environmental changes.

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“…Therefore, its conservation is of significant importance. Aspects of species biology and ecology, such as growth and reproductive biology, were studied recently [28,30,31]. Although the lacustrine environment is known to constantly change and affect inhabiting fish species ecology [32][33][34][35], the effect of Vistonis Lake's continuously changing physico-chemical parameters on the biochemical and physiological responses of A. vistonicus remains unknown.…”

Section: Introductionmentioning

confidence: 99%

Cellular Stress Responses of the Endemic Freshwater Fish Species Alburnus vistonicus Freyhof & Kottelat, 2007 in a Constantly Changing Environment

et al. 2021

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Herein we investigated the cellular responses of the endemic fish species Alburnus vistonicus Freyhof & Kottelat, 2007, under the variation of several physico-chemical parameters including temperature (°C), salinity (psu), dissolved oxygen (mg/L), pH and conductivity (μS/cm), which were measured in situ. Monthly fish samplings (October 2014–September 2015) were conducted in Vistonis Lake in northern Greece, a peculiar ecosystem with brackish waters in its southern part and high salinity fluctuations in its northern part. Fish gills and liver responses to the changes of the physico-chemical parameters were tested biochemically and histologically. Heat shock protein levels appeared to be correlated with salinity fluctuations, indicating the adaptation of A. vistonicus to the particular environment. The latter is also enhanced by increased Na+-K+ ATPase levels, in response to salinity increase during summer. The highest mitogen activated protein kinases phosphorylation levels were observed along with the maximum mean salinity values. A variety of histological lesions were also detected in the majority of the gill samples, without however securing salinity as the sole stress factor. A. vistonicus cellular stress responses are versatile and shifting according to the examined tissue, biomarker and season, in order for this species to adapt to its shifting habitat.

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Does fragmented river connectivity alter the reproductive behavior of the potamodromous fish Alburnus vistonicus?

Cited by 6 publications

References 45 publications

Monsoonal wet season influences the migration tendency of a catadromous fish (barramundi Lates calcarifer)

Monsoonal wet season influences the migration tendency of a catadromous fish (barramundi Lates calcarifer)

Effects of physical parameters on fish migration between a reservoir and its tributaries

Cellular Stress Responses of the Endemic Freshwater Fish Species Alburnus vistonicus Freyhof & Kottelat, 2007 in a Constantly Changing Environment

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