Sex-biased mortality of marine threespine stickleback (Gasterosteus aculeatus L.) during their spawning period in the White Sea

P. V. Golovin, A. E. Bakhvalova, M. V. Ivanov, T. S. Ivanova, K. A. Smirnova, D. L. Lajus

Результат исследований: Научные публикации в периодических изданияхстатья

3 Цитирования (Scopus)

Выдержка

Hypothesis: Selective sex-related mortality of the marine threespine stickleback in the White Sea causes the female-biased sex ratio observed on the spawning grounds. Organisms: Adult threespine stickleback (Gasterosteus aculeatus) spawning in the inshore zone, and three species of predatory fishes: Atlantic cod (Gadus morhua), shorthorn sculpin (Myoxocephalus scorpius), and fourhorn sculpin (Myoxocephalus quadricornis). Place and times: Kandalaksha Bay, White Sea, Russia; June to August 2012–2018. Methods: The following sampling methods were used: beach seining to determine fish density and local population size, hand collection of dead fish on the spawning grounds, gill netting of predatory fishes, analysis of predatory fish stomach contents to determine the sex of well-preserved stickleback, and morphological analysis of stickleback spines to determine the sex of decomposed stickleback. Results: The dynamics of stickleback abundance in the lagoon is explained by inshore migration of the fish to the spawning area at the beginning of the spawning period, and their subsequent departure at the end of the spawning season, with females leaving the grounds earlier than males. During spawning (5–30 June), total stickleback mortality reaches about 0.1%; the difference in the relative mortality rates of 0.0044% per day for males and 0.0030% for females is statistically significant. Mortality increases in the post-spawning period, when fish abundance in the inshore zone falls considerably, but remains at a very low level. Because of the low level of non-predation mortality, it cannot be the cause of the female-biased sex ratio observed in the White Sea stickleback population. Predation-associated mortality caused by Atlantic cod and sculpins was male-biased. Based on the stomach contents of predatory fish, the sex ratio of stickleback prey was as follows: cod, 61% males/39% females; sculpins, 82% males/18% females, which was significantly different from the population at sea (35% males/ 65% females). This factor alone, however, is unlikely to explain the prevalence of female stickleback in the lagoon. The eventual offshore male-biased mortality, caused by increased depletion of energy reserves during the spawning period, is probably the main reason for the observed female-biased sex ratio.

Язык оригиналаанглийский
Страницы (с-по)279-295
Число страниц17
ЖурналEvolutionary Ecology Research
Том20
Номер выпуска1-3
СостояниеОпубликовано - 1 янв 2019

Отпечаток

Gasterosteus aculeatus
Gasterosteidae
spawning
mortality
gender
fish
sex ratio
Gadus morhua
Cottidae
spawning ground
stomach content
lagoon
stomach
sea
netting
spine (bones)
cod (fish)
Russia
beaches
population size

Предметные области Scopus

  • Экология, эволюция поведение и систематика

Цитировать

@article{0168c5a77f334629b5de6928cf804572,
title = "Sex-biased mortality of marine threespine stickleback (Gasterosteus aculeatus L.) during their spawning period in the White Sea",
abstract = "Hypothesis: Selective sex-related mortality of the marine threespine stickleback in the White Sea causes the female-biased sex ratio observed on the spawning grounds. Organisms: Adult threespine stickleback (Gasterosteus aculeatus) spawning in the inshore zone, and three species of predatory fishes: Atlantic cod (Gadus morhua), shorthorn sculpin (Myoxocephalus scorpius), and fourhorn sculpin (Myoxocephalus quadricornis). Place and times: Kandalaksha Bay, White Sea, Russia; June to August 2012–2018. Methods: The following sampling methods were used: beach seining to determine fish density and local population size, hand collection of dead fish on the spawning grounds, gill netting of predatory fishes, analysis of predatory fish stomach contents to determine the sex of well-preserved stickleback, and morphological analysis of stickleback spines to determine the sex of decomposed stickleback. Results: The dynamics of stickleback abundance in the lagoon is explained by inshore migration of the fish to the spawning area at the beginning of the spawning period, and their subsequent departure at the end of the spawning season, with females leaving the grounds earlier than males. During spawning (5–30 June), total stickleback mortality reaches about 0.1{\%}; the difference in the relative mortality rates of 0.0044{\%} per day for males and 0.0030{\%} for females is statistically significant. Mortality increases in the post-spawning period, when fish abundance in the inshore zone falls considerably, but remains at a very low level. Because of the low level of non-predation mortality, it cannot be the cause of the female-biased sex ratio observed in the White Sea stickleback population. Predation-associated mortality caused by Atlantic cod and sculpins was male-biased. Based on the stomach contents of predatory fish, the sex ratio of stickleback prey was as follows: cod, 61{\%} males/39{\%} females; sculpins, 82{\%} males/18{\%} females, which was significantly different from the population at sea (35{\%} males/ 65{\%} females). This factor alone, however, is unlikely to explain the prevalence of female stickleback in the lagoon. The eventual offshore male-biased mortality, caused by increased depletion of energy reserves during the spawning period, is probably the main reason for the observed female-biased sex ratio.",
keywords = "Atlantic cod, Fourhorn sculpin, Gasterosteus aculeatus, Mortality, Population dynamics, Predation, Sex, Sexual dimorphism, Shorthorn sculpin, Spawning, Threespine stickleback, White Sea",
author = "Golovin, {P. V.} and Bakhvalova, {A. E.} and Ivanov, {M. V.} and Ivanova, {T. S.} and Smirnova, {K. A.} and Lajus, {D. L.}",
year = "2019",
month = "1",
day = "1",
language = "English",
volume = "20",
pages = "279--295",
journal = "Evolutionary Ecology Research",
issn = "1522-0613",
publisher = "Evolutionary Ecology Research",
number = "1-3",

}

Sex-biased mortality of marine threespine stickleback (Gasterosteus aculeatus L.) during their spawning period in the White Sea. / Golovin, P. V.; Bakhvalova, A. E.; Ivanov, M. V.; Ivanova, T. S.; Smirnova, K. A.; Lajus, D. L.

В: Evolutionary Ecology Research, Том 20, № 1-3, 01.01.2019, стр. 279-295.

Результат исследований: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - Sex-biased mortality of marine threespine stickleback (Gasterosteus aculeatus L.) during their spawning period in the White Sea

AU - Golovin, P. V.

AU - Bakhvalova, A. E.

AU - Ivanov, M. V.

AU - Ivanova, T. S.

AU - Smirnova, K. A.

AU - Lajus, D. L.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Hypothesis: Selective sex-related mortality of the marine threespine stickleback in the White Sea causes the female-biased sex ratio observed on the spawning grounds. Organisms: Adult threespine stickleback (Gasterosteus aculeatus) spawning in the inshore zone, and three species of predatory fishes: Atlantic cod (Gadus morhua), shorthorn sculpin (Myoxocephalus scorpius), and fourhorn sculpin (Myoxocephalus quadricornis). Place and times: Kandalaksha Bay, White Sea, Russia; June to August 2012–2018. Methods: The following sampling methods were used: beach seining to determine fish density and local population size, hand collection of dead fish on the spawning grounds, gill netting of predatory fishes, analysis of predatory fish stomach contents to determine the sex of well-preserved stickleback, and morphological analysis of stickleback spines to determine the sex of decomposed stickleback. Results: The dynamics of stickleback abundance in the lagoon is explained by inshore migration of the fish to the spawning area at the beginning of the spawning period, and their subsequent departure at the end of the spawning season, with females leaving the grounds earlier than males. During spawning (5–30 June), total stickleback mortality reaches about 0.1%; the difference in the relative mortality rates of 0.0044% per day for males and 0.0030% for females is statistically significant. Mortality increases in the post-spawning period, when fish abundance in the inshore zone falls considerably, but remains at a very low level. Because of the low level of non-predation mortality, it cannot be the cause of the female-biased sex ratio observed in the White Sea stickleback population. Predation-associated mortality caused by Atlantic cod and sculpins was male-biased. Based on the stomach contents of predatory fish, the sex ratio of stickleback prey was as follows: cod, 61% males/39% females; sculpins, 82% males/18% females, which was significantly different from the population at sea (35% males/ 65% females). This factor alone, however, is unlikely to explain the prevalence of female stickleback in the lagoon. The eventual offshore male-biased mortality, caused by increased depletion of energy reserves during the spawning period, is probably the main reason for the observed female-biased sex ratio.

AB - Hypothesis: Selective sex-related mortality of the marine threespine stickleback in the White Sea causes the female-biased sex ratio observed on the spawning grounds. Organisms: Adult threespine stickleback (Gasterosteus aculeatus) spawning in the inshore zone, and three species of predatory fishes: Atlantic cod (Gadus morhua), shorthorn sculpin (Myoxocephalus scorpius), and fourhorn sculpin (Myoxocephalus quadricornis). Place and times: Kandalaksha Bay, White Sea, Russia; June to August 2012–2018. Methods: The following sampling methods were used: beach seining to determine fish density and local population size, hand collection of dead fish on the spawning grounds, gill netting of predatory fishes, analysis of predatory fish stomach contents to determine the sex of well-preserved stickleback, and morphological analysis of stickleback spines to determine the sex of decomposed stickleback. Results: The dynamics of stickleback abundance in the lagoon is explained by inshore migration of the fish to the spawning area at the beginning of the spawning period, and their subsequent departure at the end of the spawning season, with females leaving the grounds earlier than males. During spawning (5–30 June), total stickleback mortality reaches about 0.1%; the difference in the relative mortality rates of 0.0044% per day for males and 0.0030% for females is statistically significant. Mortality increases in the post-spawning period, when fish abundance in the inshore zone falls considerably, but remains at a very low level. Because of the low level of non-predation mortality, it cannot be the cause of the female-biased sex ratio observed in the White Sea stickleback population. Predation-associated mortality caused by Atlantic cod and sculpins was male-biased. Based on the stomach contents of predatory fish, the sex ratio of stickleback prey was as follows: cod, 61% males/39% females; sculpins, 82% males/18% females, which was significantly different from the population at sea (35% males/ 65% females). This factor alone, however, is unlikely to explain the prevalence of female stickleback in the lagoon. The eventual offshore male-biased mortality, caused by increased depletion of energy reserves during the spawning period, is probably the main reason for the observed female-biased sex ratio.

KW - Atlantic cod

KW - Fourhorn sculpin

KW - Gasterosteus aculeatus

KW - Mortality

KW - Population dynamics

KW - Predation

KW - Sex

KW - Sexual dimorphism

KW - Shorthorn sculpin

KW - Spawning

KW - Threespine stickleback

KW - White Sea

UR - http://www.scopus.com/inward/record.url?scp=85071438669&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:85071438669

VL - 20

SP - 279

EP - 295

JO - Evolutionary Ecology Research

JF - Evolutionary Ecology Research

SN - 1522-0613

IS - 1-3

ER -