Male reproductive behaviour and spawning success in a temperate zone goby, Coryphopterus nicholsi

1982 ◽  
Vol 60 (10) ◽  
pp. 2309-2316 ◽  
Author(s):  
Kathleen S. Cole
Keyword(s):  
Reproductive Success ◽  
Standard Length ◽  
Reproductive Behaviour ◽  
Reproductive Season ◽  
Temperate Zone ◽  
Testicular Development ◽  
Male Size ◽  
Size Standard ◽  
Highly Correlated ◽  
Spawning Success

Coryphopterus nicholsi is a temperate zone marine goby. In laboratory groups of fish, females preferentially spawn with dominant males; assessment of dominance appears to be based upon courting vigour. Male size (standard length) and dominance were often, but not always, highly correlated. In contrast, there was no consistent correlation between territorial quality and spawning success. Smaller males in laboratory groups did not court females or guard eggs. However, their behaviour and testicular development during the reproductive season suggest that they may engage in sneak spawning. Dominant males are more likely to successfully guard eggs against conspecific predators than are subordinate males, and hence females should have greater reproductive success if they choose dominant males for spawning partners.

Mating status of coexisting conspecific individuals modulate reproduction in a ladybird, Menochilus sexmaculatus

2021 ◽  
Vol 71 (2) ◽  
pp. 197-214
Author(s):  
Shashwat Singh ◽  
Geetanjali Mishra ◽  
Omkar
Keyword(s):  
Reproductive Success ◽  
Early Onset ◽  
Crucial Role ◽  
Reproductive Behaviour ◽  
Reproductive Parameters ◽  
Mating Status ◽  
Ladybird Beetle ◽  
Close Vicinity ◽  
Offspring Fitness ◽  
Petri Dishes

Abstract The mating status of organisms plays a crucial role in deciphering mating decision and reproductive success of any organisms. Odour or pheromones are known to be perceived by animals through olfaction to locate mates at a distance. In this study, an attempt was made to investigate the effect of the presence of unmated and mated conspecific adults on mating and reproductive parameters of the ladybird beetle, Menochilus sexmaculatus (Fabricius, 1781). To conduct this experiment, an arena was made with the help of two Petri dishes and in such a manner that the experimental adults were only able to perceive the presence of conspecific adults of different mating status in their close vicinity. The results of the study demonstrated an early onset of mating in the presence of males compared to females. Another male in the vicinity poses competition that may force the males to establish genital contact faster. In the absence of any potential rival, copulation duration was highest. Females laid more eggs in the presence of mated females. This may be to increase offspring fitness in the presence of potential competitors for the already mated female. Females laid fewer eggs in the presence of unmated females. Unmated females nearby can be another choice for a male and thus, the male possibly limits the size of the ejaculate containing oviposition stimulants. The current study advocates that mating and reproductive behaviour are modulated according to the perceived surroundings in the form of conspecific adults of different mating status.

Reproductive strategies and chromosomal aberrations affect survival in the Rivuliid fish Hypsolebias sertanejo

Zygote ◽  
2020 ◽  
pp. 1-7
Author(s):  
Mariana Machado Evangelista ◽  
Elizabeth Romagosa ◽  
Diógenes Henrique Siqueira-Silva ◽  
George Shigueki Yasui ◽  
Takafumi Fujimoto ◽  
...  
Keyword(s):  
Flow Cytometry ◽  
Reproductive Success ◽  
Reproductive Strategies ◽  
Chromosomal Abnormalities ◽  
Reproductive Behaviour ◽  
Conservation Strategies ◽  
Hatching Rate ◽  
Natural Conditions ◽  
And Performance ◽  
Ploidy Status

Summary Rivulidae comprises a family of fish largely distributed in Brazil that includes 201 species, of which 125 are considered endangered. This fact emphasizes the need for development of conservation strategies including studies on genetics and reproduction. In this paper, we describe aspects of biology and reproduction of the rivuliid species Hypsolebias sertanejo. We outline the reproductive behaviour of this species under laboratory conditions, analyze ploidy status by flow cytometry, describe reproductive behaviour and performance and test dry and wet incubation of eggs. Although H. sertanejo showed well known patterns of reproductive behaviour, we verified many peculiarities inherent to its reproductive biology. As expected, most individuals were diploid (87.71%), however 14.29% were considered mosaics. Although no sterility was observed within mosaics, infertility of these fish was not fully evaluated. Hatching rate of the eggs collected was very low following both dry and wet incubation (5.04 and 3.79%, respectively). These results provide interesting information regarding the reproductive success of this species, and suggest that chromosomal abnormalities described may reduce the survival of H. sertanejo under natural conditions, limiting the perpetuation of this species, and emphasizing the need for more preservation efforts, including artificial propagation and gene banking.

Cultural and reproductive success in industrial societies: Testing the relationship at the proximate and ultimate levels

1993 ◽  
Vol 16 (2) ◽  
pp. 267-283 ◽  
Author(s):  
Daniel Pérusse
Keyword(s):  
Reproductive Success ◽  
Social Status ◽  
Human Behavior ◽  
Industrial Society ◽  
Human Populations ◽  
Social Species ◽  
Traditional Societies ◽  
Highly Correlated ◽  
Underlying Mechanisms ◽  
The One

AbstractIn most social species, position in the male social hierarchy and reproductive success are positively correlated; in humans, however, this relationship is less clear, with studies of traditional societies yielding mixed results. In the most economically advanced human populations, the adaptiveness of status vanishes altogether; social status and fertility are uncorrelated. These findings have been interpreted to suggest that evolutionary principles may not be appropriate for the explanation of human behavior, especially in modern environments. The present study tests the adaptiveness of social status with actual mating and reproductive data in a representative sample of males from an industrial society. Reproductive success, even when assessed by a more reliable measure ofactualmale fertility than the one commonly used, fails to correlate with social status. In striking contrast, however, status is found to be highly correlated withpotentialfertility, as estimated from copulation frequency. Status thus accounts for as much as 62% of the variance in thisproximatecomponent of fitness. This pattern is remarkably similar to what is found in many traditional societies and would result in a substantial positive relationship between cultural and reproductive success in industrial populations were it not for the novel conditions imposed by contraception and monogamy. Various underlying mechanisms are suggested for these findings, illustrating the value of current behavioral and reproductive data in the study of adaptation. It is concluded that evolutionary explanations of human behavior remain entirely relevant in modern societies.

Influence of advertisement calls on reproductive success in the male midwife toad Alytes obstetricans

Behaviour ◽  
2003 ◽  
Vol 140 (7) ◽  
pp. 885-898 ◽  
Author(s):  
Dominique Le Jacques ◽  
Thierry Lodé
Keyword(s):  
Reproductive Success ◽  
Fundamental Frequency ◽  
Female Choice ◽  
Hatching Success ◽  
Advertisement Call ◽  
Male Mating ◽  
Evolutionary Trend ◽  
Male Size ◽  
Midwife Toad ◽  
Alytes Obstetricans

AbstractConsidering the advertisement call in anuran as a sexually selected trait, we investigated the effects of male call parameters on reproductive success in midwife toad Alytes obstetricans. The pattern of advertisement call was studied in 81 males. The mean fundamental frequency varied among males. Fundamental frequency, call duration and male size correlated with the male mating success. From the stepwise regression analysis, the low call frequency was found to influence significantly the number of carried eggs and the hatching success. The fact that a single male may fertilise the eggs of several females and a single female may mate with several males constitutes an original sexual system. Large males obtained more matings and showed a higher hatching success. Female choice for dominant frequency may be regarded as a related-fitness trait being correlated with male size. Anyway, the male size and the female choice for low calls result in a same evolutionary trend favouring a best fitness.

Size influences male mating success in the alfalfa blotch leafminer (Diptera: Agromyzidae)

2001 ◽  
Vol 133 (5) ◽  
pp. 717-719 ◽  
Author(s):  
Arild Andersen ◽  
Jeremy N. McNeil
Keyword(s):  
Reproductive Success ◽  
Male Mating ◽  
Female Size ◽  
Larval Competition ◽  
Female Reproduction ◽  
Male Size ◽  
Female Life History ◽  
Males And Females ◽  
Alfalfa Blotch Leafminer ◽  
Agromyza Frontella

Male size is an important parameter in mate choice for many species and has been associated with such female life-history parameters as increased fecundity or fertility and larger progeny (Phelan and Baker 1986; Savalli and Fox 1998, 1999; Brown 1999). In the alfalfa blotch leafminer, Agromyza frontella (Rondani), intraspecific larval competition may significantly influence the size of both males and females (Quiring and McNeil 1984a). The influence of female size on female reproductive success has been studied (Quiring and McNeil 1984b, 1984c), but to date, no attention has been given to the possible effects of male size. The objectives of this study were to determine if differences in male size, the result of intraspecific larval competition, affected male longevity and reproductive success, as well as various parameters of female reproduction.

scholarly journals Selection and use of calling site by Boana leptolineata and Phyllomedusa distincta during the reproductive season

2021 ◽  
Vol 111 ◽  
Author(s):  
Renata K. Farina ◽  
Camila Paraboni ◽  
Daniela Figueiró ◽  
Mateus Raguse-Quadros ◽  
Charles F. dos Santos ◽  
...  
Keyword(s):  
Reproductive Success ◽  
Climatic Conditions ◽  
Subtropical Forest ◽  
Wetland Vegetation ◽  
Reproductive Season ◽  
The Body ◽  
Behavioral Characteristics ◽  
Southern Brazil ◽  
Microhabitat Structure ◽  
Selection Of

ABSTRACT Climatic conditions and microhabitat characteristics, such as the substrate and type of vegetation, influence the choice of male anurans for calling sites that optimize their reproductive success. We evaluated the structure and selection of vocalization microhabitat of 17 individuals of Phyllomedusa distincta Lutz, 1950 and 25 of Boana leptolineata (Braun & Braun, 1977), in a subtropical forest in southern Brazil. We measure the height of the perch, the distance between the perch and the edge of the body of water and the structure of the microhabitat of quadrants used by individuals. The same attributes were measured in the quadrants available (but not used) by the individuals. We classified the microhabitats by visual estimate, assigning percentages of coverage for each quadrant by herbaceous, shrub, tree and wetland vegetation. We observed that both species selected their microhabitat, since the characteristics of the quadrants occupied by the individuals were different from those available. Phyllomedusa distincta was more associated with heterogeneous microhabitats, while B. leptolineata occurred in environments with greater coverage of tree strata. Additionally, we observed that both species used shrubs more frequently as a perch site. The selection of these microhabitat characteristics must be associated with strategies to optimize the use of the reproductive habitat, based on the morphological and behavioral characteristics of the species. Finally, it is possible to infer that the differences observed in the microhabitat structure selected by the species can facilitate the coexistence of both in the context of the heterogeneity of the environment.

Does male-only fishing influence reproductive success of the female spiny king crab, Paralithodes brevipes?

2007 ◽  
Vol 64 (4) ◽  
pp. 735-742 ◽  
Author(s):  
Taku Sato ◽  
Masakazu Ashidate ◽  
Tadao Jinbo ◽  
Seiji Goshima
Keyword(s):  
Reproductive Success ◽  
Laboratory Experiments ◽  
Reproductive Potential ◽  
Fertilization Rate ◽  
Reproductive Season ◽  
Female Size ◽  
Fishing Pressure ◽  
King Crab ◽  
Sperm Limitation

Male-only fishing for spiny king crab (Paralithodes brevipes) has likely impaired the reproductive success of the stock by decreasing the availability of sperm and (or) male mates. The reproductive success of females in fished populations in 2003 and 2004 was estimated based on female reproductive potential determined in laboratory experiments. Some females had no or partial clutches and showed a low fertilization rate. As female size decreased, the fertilization rate decreased and their clutches became small. These results suggest that mating was impaired by sperm limitation, because risk of sperm limitation increases throughout the reproductive season in fished populations, and smaller females tend to mate later in the reproductive season than larger females of this species. We compared the reproductive success between these years with different fishing pressures. In 2003, the total fishing pressure was high, therefore causing decreases in availability of sperm and males. This likely resulted in the reproductive success of females being lower in 2003 than in 2004.

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