Causes and consequences of pair‐bond disruption in a sex‐skewed population of a long‐lived monogamous seabird

Ecological Monographs, Journal Year: 2022, Volume and Issue: 92(3)

Published: April 1, 2022

Many animals form long-term monogamous pair bonds, and the disruption of a bond (through either divorce or widowhood) can have significant consequences for individual vital rates (survival, breeding, breeding success probabilities) life-history outcomes (lifetime reproductive [LRS], life expectancy). Here, we investigated causes pair-bond in wandering albatross (

Language: Английский

---

Successful breeding predicts divorce in plovers

Scientific Reports, Journal Year: 2020, Volume and Issue: 10(1)

Published: Sept. 23, 2020

Abstract When individuals breed more than once, parents are faced with the choice of whether to re-mate their old partner or divorce and select a new mate. Evolutionary theory predicts that, following successful reproduction given partner, that should be retained for future reproduction. However, recent work in polygamous bird, has instead indicated divorced often failed breeders (Halimubieke et al. Ecol Evol 9:10734–10745, 2019), because one parent can benefit by mating reproducing shortly after divorce. Here we investigate breeding using data from 14 well-monitored populations plovers ( Charadrius spp.). We show nesting leads divorce, whereas nest failure retention mate follow-up breeding. Plovers partners simultaneously deserted broods produced offspring within season Our provides counterpoint theoretical expectations is triggered low reproductive success, supports adaptive explanations as strategy improve individual success. In addition, temperature may modulate these costs benefits, contribute dynamic variation patterns across plover systems.

Language: Английский

---

Offspring desertion with care? Chick mortality and plastic female desertion in Snowy Plovers

Behavioral Ecology, Journal Year: 2020, Volume and Issue: 32(3), P. 428 - 439

Published: Dec. 3, 2020

Abstract Offspring desertion is often a plastic behavioral strategy that requires precise timing as the termination of parental care may have profound consequences for fitness parents and offspring. However, decision process involved with still poorly understood. Snowy Plovers Charadrius nivosus show highly flexible brood some females deserting early re-mate, whereas others provide extended until young are independent. Using dynamic modeling framework, we investigated effect multiple factors on decision-making female in Ceuta, Mexico over 7-year period. Females were more likely to stay larger broods, while their probability was lower at beginning season, when re-mating opportunities higher than later season. condition hatching did not influence length care. Chick death offspring frequently coincided, suggesting deteriorating trigger desertion. deserted broods high survival prospects absence impact negatively chick survival. Conversely, low mortality despite reduced value possible. This suggests sensitive needs adjust accordingly. Taken together, conclude behavior allows maximize reproductive success stochastic environment.

Language: Английский

---

Mate fidelity in a polygamous shorebird, the snowy plover ( Charadrius nivosus )

Ecology and Evolution, Journal Year: 2019, Volume and Issue: 9(18), P. 10734 - 10745

Published: Sept. 1, 2019

Social monogamy has evolved multiple times and is particularly common in birds. However, it not well understood why some species live long-lasting monogamous partnerships while others change mates between breeding attempts. Here, we investigate mate fidelity a sequential polygamous shorebird, the snowy plover (Charadrius nivosus), which both males females may have several attempts within season with same or different mates. Using 6 years of data from well-monitored population Bahía de Ceuta, Mexico, investigated predictors fitness implications years. We show that order to maximize reproductive success season, individuals divorce after successful nesting re-mate partner nest failure. Therefore, divorced plovers, counterintuitively, achieve higher than retain their mate. also mating decisions sexes predict dispersal patterns. Taken together, our findings imply an adaptive strategy improve stochastic environment. Understanding important for evolution polygamy, these behaviors productivity.

Language: Английский

---

Remating opportunities and low costs underlie maternal desertion

Evolution, Journal Year: 2022, Volume and Issue: 77(1), P. 97 - 109

Published: Dec. 9, 2022

Parental care can enhance offspring survival but may impose significant costs to parents. The and benefits of are key understanding patterns parental care, where parents benefit by having their partner increase investment in while reducing own effort. However, investigating the wild populations is challenging. Here we use highly detailed behavioral observations families a small shorebird, one parent frequently deserts its offspring, explore potential desertion population. We first show that females desert broods more than males. Second, investigate this frequent female terms additional mating opportunities, growth deserted offspring. Our results indicate favored combination remating lack brood survival, as abandoned male continue provide after desertion. shed light on underlying natural strategies suggest fine-tuned behavior responds seasonally changing

Language: Английский

---

Males and females of a polygamous songbird respond differently to mating opportunities

Behavioral Ecology and Sociobiology, Journal Year: 2021, Volume and Issue: 75(4)

Published: March 25, 2021

Language: Английский

---

Nesting Habitat Suitability of the Kentish Plover in the Arid Lands of Xinjiang, China

Animals, Journal Year: 2023, Volume and Issue: 13(21), P. 3369 - 3369

Published: Oct. 30, 2023

Understanding the main ecological factors of nesting habitat shorebirds is great significance in relation to their protection and management. Habitat loss change due a lack water threaten biodiversity shorebirds, with impacts likely be most pronounced arid lands. We collected data 144 sites 10 during breeding season from April July each year 2019 2020 nine river districts Xinjiang. The MaxEnt model was applied assess suitability habitats for Kentish plovers (Charadrius alexandrinus) study area examine affecting habitat. suitable are mostly distributed plain reservoirs middle part Northern Slope Tianshan Mountains, Ebinur Lake its eastern position southwestern Junggar Basin, near Ulungur southern Irtysh area. distance water, normalized difference vegetation index, mean temperature season, slope, land use were selection plovers. It found that proportion protected low (851.66 km2), accounting only 11.02% total In view scarcity importance bodies lands at present, it suggested strengthen conservation management regional by regulating optimizing allocation resources.

Language: Английский

---

CeutaOPEN, individual-based field observations of breeding snowy plovers Charadrius nivosus

Scientific Data, Journal Year: 2020, Volume and Issue: 7(1)

Published: May 20, 2020

Abstract Shorebirds (part of the order Charadriiformes) have a global distribution and exhibit remarkable variation in ecological behavioural traits that are pertinent to many core questions fields evolutionary ecology conservation biology. also relatively convenient study wild as they ground nesting often occupy open habitats tractable monitor. Here we present database documenting reproductive 1,647 individually marked snowy plovers ( Charadrius nivosus ) monitored between 2006 2016 at Bahía de Ceuta (23°54N, 106°57W) – an important breeding site north-western Mexico. The encompasses various morphological, behavioural, fitness-related males females along with spatial temporal population dynamics. This resource will serve data repository for addressing overarching avian wetland during era big collaborative science.

Language: Английский

---

Sex roles in parental care in a species with precocial offspring and frequent brood desertion

Animal Behaviour, Journal Year: 2024, Volume and Issue: 215, P. 211 - 225

Published: July 24, 2024

Biparental care can be favoured when offspring by both parents provides a stronger fitness incentive to than deserting their offspring. In species with precocial offspring, the burden of is expected comparatively low, facilitating desertion one parent and uniparental abandoned partner. However, patterns vary widely between within species, some while other families remain biparental. Understanding details delivered males females in before important provide insight into mechanisms that influence stability biparental care. Here we used detailed behavioural observations from brood period investigate balance male female well-studied shorebird, Kentish plover, Charadrius alexandrinus, where subsequently deserted remained until were independent. We found expressed all behaviours (brooding, vigilance defence) characteristic utilized quantitative mutual entropy analyses show division parental labour (i.e. task specialization) was unrelated maintenance also provided broadly similar levels care, there subtle differences: typically slightly more across development, suggesting sex differences self-maintenance may underlie Together our results indicate minor females, consistent theoretical predictions should limited populations frequent

Language: Английский

---

Variation in nest survival of three species of tropical plovers in Madagascar with clutch size, age of nest, year and El Niño effect

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(9)

Published: Sept. 1, 2024

Abstract A combination of life history traits and environmental conditions has been highlighted as the main drivers avian breeding success. While success are well known in some species, especially birds northern, temperate regions; species other parts world have received relatively little attention. In this study, we used a long‐term dataset on tropical plovers from south‐west Madagascar to investigate whether nest survival changed over time were similar for multiple same arid habitat. 12‐year period 2009–2020, monitored 2077 nests three with different strategies: 1185 Kittlitz's ( Anarhynchus pecuarius ) flexible strategy uniparental care; 565 white‐fronted A. marginatus 327 thoracicus which both biparental care. We found that was associated clutch‐size, age year among plover species. addition, annual variation climatic El Niño/La Niña events included most supported models plovers, but effects not significant. Overall estimates daily all species: plover: 0.950 ± 0.002 SE, 0.919 0.007 0.862 0.047 SE. Estimates season, based increases clutch during incubation periods (26 days 29 plovers), low: 0.161 0.056 0.287 0.022 0.228 0.019 All had factors affecting survival, traits.

Language: Английский

---