Sexual pattern ofNeocirrhites armatus (Cirrhitidae) with notes on other hawkish species

Sadovy, Yvonne; Donaldson, Terry J.

doi:10.1007/bf00001992

Cited by 19 publications

(11 citation statements)

References 13 publications

(21 reference statements)

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“…There are several theories about the adaptative significance of sex change in those teleosts that normally signals hermaphroditism (Robertson and Warner, 1978;Fischer and Hardison, 1987;Lejeune, 1987;Shapiro, 1987;Siau, 1994;Sadovy and Donaldson, 1995). The occurrences observed in the present study were not common cases of hermaphroditism, but they could be more accurately described as intersexuality.…”

Section: Discussionsupporting

confidence: 46%

Occurrence of intersexuality in " Lambaris" , Astyanax scabripinnis (Jenyns, 1842), small characids from the Brazilian streams

Sá

Fragoso-Moura

Fenerich-Verani

et al. 2008

Braz. arch. biol. technol.

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Section: Discussionsupporting

confidence: 46%

Occurrence of intersexuality in " Lambaris" , Astyanax scabripinnis (Jenyns, 1842), small characids from the Brazilian streams

Sá

Fragoso-Moura

Fenerich-Verani

et al. 2008

Braz. arch. biol. technol.

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“…Hawkfishes exist on coral reefs within spatial territories that comprise a polygamous social structure [ 57 , 59 , 60 ]. This study showed that the maximum distance traveled during the observation period for P .…”

Section: Discussionmentioning

confidence: 99%

Habitat Use and Spatial Variability of Hawkfishes with a Focus on Colour Polymorphism in Paracirrhites forsteri

2017

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Identifying relationships between fishes and their environment is an integral part of understanding coral reef ecosystems. However, this information is lacking for many species, particularly in understudied and remote regions. With coral reefs continuing to face environmental pressures, insight into abundance and distribution patterns along with resource use of fish communities will aid in advancing our ecological understanding and management processes. Based on ecological surveys of hawkfish assemblages (Family: Cirrhitidae) in the Red Sea, we reveal distinct patterns in the distribution and abundance across the continental shelf, wave exposure, and with depth, particularly in the four colour morphs of Paracirrhites forsteri. Distinct patterns were observed among hawkfishes, with higher abundance of all species recorded on reefs farther from shore and on wave exposed reef zones. Cirrhitus spilotoceps was only recorded on the exposed crest, but unlike the other species, did not associate with live coral colonies. Overall, the most abundant species was P. forsteri. This species exploited a variety of habitats but showed an affinity for complex habitats provided by live and dead coral colonies. No difference in habitat use was observed among the four colour morphs, but distinct patterns were apparent in distribution and abundance with depth. This study suggests that in addition to P. forsteri exhibiting diverse colour morphologies, these various morphotypes appear to have corresponding ecological differences in the Red Sea. To better understand this, further studies are needed to identify what these differences extend to and the mechanisms involved.

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“…partially accounts for these large-scale differences in patterns of abundance, the local abundance and composition of hawkfish assemblages are likely to be structured by a range of other factors, including inter-specific competition, predation, prey availability and variation in larval supply and settlement of individual species. Many hawkfish species maintain a polygamous social structure with a single dominant male and several smaller subordinate females existing in non-overlapping territories [ 34 , 54 , 56 ]. While it has been hypothesised that territories are maintained to defend optimal microhabitats (e.g., coral colonies), recent evidence suggests that females defend food resources whereas the primary concern of males is defending territories against male conspecifics [ 54 ].…”

Section: Discussionmentioning

confidence: 99%

Habitat Selectivity and Reliance on Live Corals for Indo-Pacific Hawkfishes (Family: Cirrhitidae)

et al. 2015

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Hawkfishes (family: Cirrhitidae) are small conspicuous reef predators that commonly perch on, or shelter within, the branches of coral colonies. This study examined habitat associations of hawkfishes, and explicitly tested whether hawkfishes associate with specific types of live coral. Live coral use and habitat selectivity of hawkfishes was explored at six locations from Chagos in the central Indian Ocean extending east to Fiji in the Pacific Ocean. A total of 529 hawkfishes from seven species were recorded across all locations with 63% of individuals observed perching on, or sheltering within, live coral colonies. Five species (all except Cirrhitus pinnulatus and Cirrhitichthys oxycephalus) associated with live coral habitats. Cirrhitichthys falco selected for species of Pocillopora while Paracirrhites arcatus and P. forsteri selected for both Pocillopora and Acropora, revealing that these habitats are used disproportionately more than expected based on the local cover of these coral genera. Habitat selection was consistent across geographic locations, and species of Pocillopora were the most frequently used and most consistently selected even though this coral genus never comprised more than 6% of the total coral cover at any of the locations. Across locations, Paracirrhites arcatus and P. forsteri were the most abundant species and variation in their abundance corresponded with local patterns of live coral cover and abundance of Pocilloporid corals, respectively. These findings demonstrate the link between small predatory fishes and live coral habitats adding to the growing body of literature highlighting that live corals (especially erect branching corals) are critically important for sustaining high abundance and diversity of fishes on coral reefs.

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Sexual pattern ofNeocirrhites armatus (Cirrhitidae) with notes on other hawkish species

Cited by 19 publications

References 13 publications

Occurrence of intersexuality in " Lambaris" , Astyanax scabripinnis (Jenyns, 1842), small characids from the Brazilian streams

Occurrence of intersexuality in " Lambaris" , Astyanax scabripinnis (Jenyns, 1842), small characids from the Brazilian streams

Habitat Use and Spatial Variability of Hawkfishes with a Focus on Colour Polymorphism in Paracirrhites forsteri

Habitat Selectivity and Reliance on Live Corals for Indo-Pacific Hawkfishes (Family: Cirrhitidae)

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