Life history characteristics of the potentially invasive Ponto-Caspian goby Neogobius fluviatilis in natural lakes from its native range (Black Sea region of Turkey)

2018 ◽  
Vol 69 (10) ◽  
pp. 1544 ◽  
Author(s):  
Uǧur Karakuş ◽  
Nildeniz Top ◽  
Erdi Gökhan Tepeköy ◽  
John Robert Britton ◽  
Ali Serhan Tarkan
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Somatic Growth ◽  
Reproductive Traits ◽  
Native Range ◽  
Black Sea Region ◽  
Factors Affecting ◽  
Natural Lakes ◽  
Key Factor ◽  
Growth And Reproduction

The aim of this study was to provide baseline data and fill an outstanding knowledge gap in our understanding of factors affecting the invasiveness of the Ponto-Caspian gobiid Neogobius fluviatilis. To this end, the life history traits (as somatic growth and reproduction) of N. fluviatilis were studied in three natural freshwater lakes in its native range. These populations were characterised by slow somatic growth rates, being the slowest reported across all the native and non-native ranges of N. fluviatilis. Ages were recorded to 7 years. Across the three lakes, there was considerable variability in sex ratios and reproductive traits (including length at maturity and fecundity at length and age), revealing considerable interpopulation variability. These data suggest that N. fluviatilis has considerable plasticity in the expression of its life history traits, with this plasticity argued as a key factor in facilitating the ability of N. fluviatilis to establish and invade new waters following introductions.

scholarly journals Plasticity in life history traits of the native Proterorhinus semilunaris suggests high adaptive capacity in its invasive range

2018 ◽  
pp. 48 ◽  
Author(s):  
Nildeniz Top ◽  
Uğur Karakuş ◽  
Erdi Gökhan Tepeköy ◽  
John Robert Britton ◽  
Ali Serhan Tarkan
Keyword(s):  
Life History ◽  
Adaptive Capacity ◽  
Life History Traits ◽  
Sex Ratios ◽  
Somatic Growth ◽  
Native Range ◽  
Ecological Data ◽  
Reproductive Characteristics ◽  
Natural Lakes ◽  
Proterorhinus Semilunaris

Invasion risk assessments are reliant on ecological data that assist the predictions of whether an introduced species will adapt to novel conditions. Data from the native range of potential invaders can thus assist these assessments. Here, the growth and reproductive characteristics of the Western tubenose goby Proterorhinus semilunaris, a Ponto-Caspian gobiid, were assessed in three natural lakes in their native range, as there are few extant data on these traits. Across the three lakes, the gobies were found in varying abundances. Sex ratios varied, with females significantly outnumbering males in only one lake, with equal sex ratios in the other lakes. The fish always showed a positive allometric growth, but had high variability in their somatic growth rates and relative body conditions between the lakes. Scale ageing revealed all populations comprised of individuals to four years old, with one lake having individuals to 5 years old. Reproductive characteristics, including size at maturity, gonado-somatic index and fecundity, did not differ significantly between the lakes. These data suggest that plasticity in aspects of their life history traits provides P. semilunaris with considerable adaptive capacity following their introduction into novel conditions.

scholarly journals Relative clutch mass of Basiliscus vittatus Wiegmann, 1828 (Squamata, Corytophanidae): female morphological constraints

Herpetozoa ◽  
2019 ◽  
Vol 32 ◽  
pp. 211-219
Author(s):  
Gabriel Suárez-Varón ◽  
Orlando Suárez-Rodríguez ◽  
Gisela Granados-González ◽  
Maricela Villagrán-Santa Cruz ◽  
Kevin M. Gribbins ◽  
...  
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Abiotic Factors ◽  
Reproductive Traits ◽  
The Family ◽  
In Captivity ◽  
Abiotic And Biotic Factors ◽  
Gravid Females ◽  
Favorable Conditions ◽  
Clutch Mass

Clutch size (CS) and relative clutch mass (RCM) are considered important features in life history descriptions of species within Squamata. Variations in these two characteristics are caused by both biotic and abiotic factors. The present study provides the first account related to CS and RCM ofBasiliscus vittatusin Mexico within a population that inhabits an open riverbed juxtapositioned to tropical rainforest habitat in Catemaco, Veracruz, Mexico (170 m a.s.l.). Twenty-nine gravid females were collected and kept in captivity under favorable conditions that promote oviposition. The CS within this population was 6.2 ± 0.2 and was correlated positively with snout vent-length (SVL); while the RCM was 0.17 ± 0.006 and was correlated positively with both CS and width of egg. Factors, such as female morphology and environmental conditions, should influence these reproductive traits inB. vittatus. The data collected in this study could provide a framework for comparisons of the life history traits across populations ofB. vittatusin Mexico and within other species of the family Corytophanidae and provide a model for testing how abiotic and biotic factors may influence the CS and RCM in basilisk lizards throughout their range.

scholarly journals Comparative analysis of life history traits and trends of abundance in coral reefs of the orange-spotted grouper (Epinephelus coioides) from two regions of the Arabian Gulf

2019 ◽  
Vol 76 (4) ◽  
pp. 987-998 ◽  
Author(s):  
Yu-Jia Lin ◽  
Edwin M Grandcourt ◽  
Lotfi Rabaoui ◽  
Rommel H Maneja ◽  
Mohammad A Qurban ◽  
...  
Keyword(s):  
Life History ◽  
Comparative Analysis ◽  
Coral Reefs ◽  
Life History Traits ◽  
Arabian Gulf ◽  
Somatic Growth ◽  
Biological Knowledge ◽  
Epinephelus Coioides ◽  
Reproductive Tactics ◽  
Bidirectional Sex Change

Abstract The orange-spotted grouper Epinephelus coioides is one of the most important commercially exploited fish species in the Arabian Gulf. Studies to establish the basic biological knowledge necessary for sustainable exploitation are few and of limited spatial extent. We carry out a comparative analysis of life history traits of this sequential hermaphrodite and of trends of abundance in coral reefs, northern vs. southern Gulf. We found remarkable differences in sex proportion by length and age, rates of somatic growth, size at maturity and production of gonadic biomass, and no differences in the age composition, mode of growth, timing and duration of spawning, natural mortality rate, and trends of abundance. In the northern Gulf, the reproductive tactics could be diandric protogyny or protandric because males disappear at higher size and later age. In the southern Gulf, the strategy is protogyny, with full predominance of females in early life and full predominance of males in late life. In the northern Gulf, the orange-spotted grouper could exhibit bidirectional sex change. We suggest that fisheries policies should be versatile, consisting of regional-wide as well as local management measures, to account for local differences and regional-wide commonalities in life history traits and trends of abundance.

scholarly journals Isolation and predation drive gecko life-history evolution on islands

2020 ◽  
Vol 129 (3) ◽  
pp. 618-629
Author(s):  
Rachel Schwarz ◽  
Yuval Itescu ◽  
Antonis Antonopoulos ◽  
Ioanna-Aikaterini Gavriilidi ◽  
Karin Tamar ◽  
...  
Keyword(s):  
Life History ◽  
Life Histories ◽  
Life History Traits ◽  
Life History Evolution ◽  
Reproductive Traits ◽  
Predation Pressure ◽  
Ecological Studies ◽  
Island Populations ◽  
Island Syndrome ◽  
Insular Populations

Abstract Insular animals are thought to be under weak predation pressure and increased intraspecific competition compared with those on the mainland. Thus, insular populations are predicted to evolve ‘slow’ life histories characterized by fewer and smaller clutches of larger eggs, a pattern called the ‘island syndrome’. To test this pattern, we collected data on egg volume, clutch size and laying frequency of 31 Aegean Island populations of the closely related geckos of the Mediodactylus kotschyi species complex. We tested how predation pressure, resource abundance, island area and isolation influenced reproductive traits. Isolation and predation were the main drivers of variation in life-history traits. Higher predator richness seemed to promote faster life histories, perhaps owing to predation on adults, whereas the presence of boas promoted slower life histories, perhaps owing to release from predation by rats on the eggs of geckos. Insular geckos followed only some of the predictions of the ‘island syndrome’. Predation pressure seemed to be more complex than expected and drove life histories of species in two opposing directions. Our results highlight the importance of considering the identity of specific predators in ecological studies.

Comparative analysis of life-history traits in two species of C alomys (Rodentia: Sigmodontinae) in captivity / Analyse comparative des traits d'histoire de vie de deux espèces de Calomys (Rodentia: Sigmodontinae) en captivité

Mammalia ◽  
2006 ◽  
Vol 70 (1-2) ◽  
Author(s):  
Luciana O. Araripe ◽  
Paula Aprigliano ◽  
Natalie Olifiers ◽  
Pavel Borodin ◽  
Rui Cerqueira
Keyword(s):  
Growth Rate ◽  
Life History ◽  
Litter Size ◽  
Life History Traits ◽  
Reproductive Traits ◽  
Sympatric Species ◽  
Apparent Difference ◽  
Stress Reactions ◽  
Lower Growth ◽  
Litter Mass

AbstractWe analyzed life-history traits (fertility, growth and rate of postnatal development) in captive-bred colonies of two closely related sympatric species: Calomys expulsus and C. tener (Rodentia, Sigmodontinae). We found significant differences between the species in growth rate and several reproductive traits. C. tener had a smaller litter size and litter mass, smaller proportion of litter mass to maternal mass, lower growth rate and higher infant mortality. We also found an apparent difference in correlation patterns of life history parameters between the two species of Calomys . The strong correlation between body size and fecundity found in other studies of life history traits and in selection experiments seems to be disrupted in C. tener . We found a significant positive correlation between maternal mass and litter size and mass only for C. expulsus, which means that in C. tener the fertility of females does not depend strongly on body mass. We discuss inbreeding depression and stress reactions as possible reasons for these results.

Comparative analysis of life-history traits in two species of C alomys (Rodentia: Sigmodontinae) in captivity / Analyse comparative des traits d'histoire de vie de deux espèces de Calomys (Rodentia: Sigmodontinae) en captivité

Mammalia ◽  
2006 ◽  
Vol 70 (1-2) ◽  
Author(s):  
Luciana O. Araripe ◽  
Paula Aprigliano ◽  
Natalie Olifiers ◽  
Pavel Borodin ◽  
Rui Cerqueira
Keyword(s):  
Growth Rate ◽  
Life History ◽  
Litter Size ◽  
Life History Traits ◽  
Reproductive Traits ◽  
Sympatric Species ◽  
Apparent Difference ◽  
Stress Reactions ◽  
Lower Growth ◽  
Litter Mass

AbstractWe analyzed life-history traits (fertility, growth and rate of postnatal development) in captive-bred colonies of two closely related sympatric species: Calomys expulsus and C. tener (Rodentia, Sigmodontinae). We found significant differences between the species in growth rate and several reproductive traits. C. tener had a smaller litter size and litter mass, smaller proportion of litter mass to maternal mass, lower growth rate and higher infant mortality. We also found an apparent difference in correlation patterns of life history parameters between the two species of Calomys . The strong correlation between body size and fecundity found in other studies of life history traits and in selection experiments seems to be disrupted in C. tener . We found a significant positive correlation between maternal mass and litter size and mass only for C. expulsus, which means that in C. tener the fertility of females does not depend strongly on body mass. We discuss inbreeding depression and stress reactions as possible reasons for these results.

scholarly journals Evolution of reproductive traits have no apparent life-history associated cost in populations of Drosophila melanogaster selected for cold shock resistance

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Karan Singh ◽  
Ekta Kochar ◽  
Prakhar Gahlot ◽  
Karan Bhatt ◽  
Nagaraj Guru Prasad
Keyword(s):  
Body Weight ◽  
Drosophila Melanogaster ◽  
Life History ◽  
Cold Stress ◽  
Life History Traits ◽  
Cold Shock ◽  
Reproductive Traits ◽  
Mating Frequency ◽  
Egg Viability ◽  
Shock Resistance

Abstract Background In insect species like Drosophila melanogaster, evolution of increased resistance or evolution of particular traits under specific environmental conditions can lead to energy trade-offs with other crucial life-history traits. Adaptation to cold stress can, in principle, involve modification of reproductive traits and physiological responses. Reproductive traits carry a substantial cost; and therefore, the evolution of reproductive traits in response to cold stress could potentially lead to trade-offs with other life-history traits. We have successfully selected replicate populations of Drosophila melanogaster for increased resistance to cold shock for over 33 generations. In these populations, the ability to recover from cold shock, mate, and lay fertile eggs 24 h post cold shock is under selection. These populations have evolved a suite of reproductive traits including increased egg viability, male mating ability, and siring ability post cold shock. These populations also show elevated mating rate both with and without cold shock. In the present study, we quantified a suite of life-history related traits in these populations to assess if evolution of cold shock resistance in these populations comes at a cost of other life-history traits. Results To assess life-history cost, we measured egg viability, mating frequency, longevity, lifetime fecundity, adult mortality, larva to adult development time, larvae to adults survival, and body weight in the cold shock selected populations and their controls under two treatments (a) post cold chock and (b) without cold shock. Twenty-four hours post cold shock, the selected population had significantly higher egg viability and mating frequency compared to control populations indicating that they have higher cold shock resistance. Selected populations had significantly longer pre-adult development time compared to their control populations. Females from the selected populations had higher body weight compared to their control populations. However, we did not find any significant difference between the selected and control populations in longevity, lifetime fecundity, adult mortality, larvae to adults survival, and male body weight under the cold chock or no cold shock treatments. Conclusions These findings suggest that cold shock selected populations have evolved higher mating frequency and egg viability. However, there is no apparent life-history associated cost with the evolution of egg viability and reproductive performances under the cold stress condition.

scholarly journals Different solutions lead to similar life history traits across the great divides of the amniote tree of life

2021 ◽  
Vol 28 (1) ◽  
Author(s):  
Shai Meiri ◽  
Gopal Murali ◽  
Anna Zimin ◽  
Lior Shak ◽  
Yuval Itescu ◽  
...  
Keyword(s):  
Life History ◽  
Parental Care ◽  
Biomass Production ◽  
Reproductive Strategies ◽  
Life History Traits ◽  
Reproductive Traits ◽  
Food Provisioning ◽  
Protective Shell ◽  
Production Rates ◽  
Reproductive Characteristics

AbstractAmniote vertebrates share a suite of extra-embryonic membranes that distinguish them from anamniotes. Other than that, however, their reproductive characteristics could not be more different. They differ in basic ectothermic vs endothermic physiology, in that two clades evolved powered flight, and one clade evolved a protective shell. In terms of reproductive strategies, some produce eggs and others give birth to live young, at various degrees of development. Crucially, endotherms provide lengthy parental care, including thermal and food provisioning—whereas ectotherms seldom do. These differences could be expected to manifest themselves in major differences between clades in quantitative reproductive traits. We review the reproductive characteristics, and the distributions of brood sizes, breeding frequencies, offspring sizes and their derivatives (yearly fecundity and biomass production rates) of the four major amniote clades (mammals, birds, turtles and squamates), and several major subclades (birds: Palaeognathae, Galloanserae, Neoaves; mammals: Metatheria and Eutheria). While there are differences between these clades in some of these traits, they generally show similar ranges, distribution shapes and central tendencies across birds, placental mammals and squamates. Marsupials and turtles, however, differ in having smaller offspring, a strategy which subsequently influences other traits.

scholarly journals Variation in life-history traits among Daphnia and its relationship to species-level responses to phosphorus limitation

2019 ◽  
Vol 6 (8) ◽  
pp. 191024 ◽  
Author(s):  
Rachel Hartnett
Keyword(s):  
Life History ◽  
Food Quality ◽  
Life History Traits ◽  
Growth Traits ◽  
Model Organism ◽  
Reproductive Traits ◽  
Phosphorus Limitation ◽  
Species Level ◽  
Trait Variation ◽  
P Limitation

Currently organisms are experiencing changes in their environment at an unprecedented rate. Therefore, the study of the contributions to and responses in traits linked to fitness is crucial, as they have direct consequences on a population's success in persisting under such a change. Daphnia is used as a model organism as the genus contains keystone primary consumers in aquatic food webs. A life-history table experiment (LHTE) using four species of Daphnia was conducted to compare variation in life-history traits among species across two different environmental conditions (high and low phosphorus availability). Results indicate that the food quality environment had the most impact on life-history traits, while genetic contributions to traits were higher at the species-level than clonal-level. Higher trait variation and species-level responses to P-limitation were more evident in reproductive traits, while growth traits were found to be less affected by food quality and had less variation. Exploring trait variation and potential plasticity in organisms is increasingly important to consider as a potential mechanism for population persistence given the fluctuations in environmental stressors we are currently experiencing.

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