Reproductive biology of a filter-feeding amphipod, Leptocheirus pinguis  , with extended parental care

Thiel, Martín

doi:10.1007/s002270050245

Cited by 13 publications

(5 citation statements)

References 25 publications

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“…The breeding season of M. palmata in Mar Chiquita was restricted to summer, when temperatures were always greater than 188C. Temperature is the factor that controls reproduction in semiterrestrial and shallow water benthic amphipods such as O. gamarellus, Platorchestia platensis (KrÖyer, 1845), Corophium volutator (Pallas, 1766) and Unciola inermis Shoemaker, 1945 (Thiel, 1997;Persson, 1999Persson, , 2001 although the in£uence of photoperiod should not be discarded (Steele & Steele, 1986;Kevrekidis, 2005). The several peaks of settlement observed during the breeding season of M. palmata are characterized by higher densities of small individuals and the simultaneous decrease in the percentage of ovigerous females.…”

Section: Discussionmentioning

confidence: 99%

Life history and reproductive biology of the invasive amphipod Melita palmata (Amphipoda: Melitidae) in the Mar Chiquita coastal lagoon, Argentina

2006

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The life history and reproductive biology of the gammaridean amphipod Melita palmata was studied in the Mar Chiquita coastal lagoon (Argentina). The animals were collected fortnightly or monthly from Ficopomatus enigmaticus reefs from December 2000 to March 2002. The population density reached a maximum of 1556.67±1560 ind/m3 (mean±SD) in March 2001, decreased dramatically after intense rainfalls in winter 2001, and had a minimum value of 141.67±27.54 ind/m3 (mean±SD) in March 2002. Size differed significantly between sexes. The maximum size of males was 11.5 mm and this was 1.4 times longer than the length of females. The average sex ratio (0.44) did not differ significantly from an expected 1:1 value. Ovigerous females were present from December to March, when the temperature was above 18°C. The body size of ovigerous females ranged from 2.9 to 6.81 mm. There was a positive correlation between the brood size and body length of ovigerous females, and the maximum number of eggs per female was ten. Recruitment took place during the whole breeding season; juveniles recruited at the beginning of the season matured at the end of the same season, those recruited late would probably reach maturity in the following season.

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Section: Discussionmentioning

confidence: 99%

Life history and reproductive biology of the invasive amphipod Melita palmata (Amphipoda: Melitidae) in the Mar Chiquita coastal lagoon, Argentina

2006

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“…Thiel (1997a) and Thiel et al (1997) stress that the major advantages of extended parental care in peracarid crustaceans are shelter from predation in endobenthic species and improved feeding conditions for young in the species with exposed life. The studies on extended maternal care of endobenthic amphipods in Thiel (1997bThiel ( ,c, 1998 have given supportive data for this hypothesis. In this study, however, the degree of motheryoung association in Caprella species living in the same environmental conditions seemed to be mostly connected to physical conditions such as the characteristics of microhabitats.…”

Section: Interspeci¢c Di¡erence Of Microhabitat Usementioning

confidence: 93%

Morphological characteristics of young, maternal care behaviour and microhabitat use by caprellid amphipods

Aoki

1999

J. Mar. Biol. Ass.

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Microhabitat use by nine species of caprellid amphipods in the genus Caprella inhabiting a Japanese Sargassum bed could be divided into three major categories. Differences in the patterns of use were closely related to the nature of the mother–young association and morphological characteristics of young. Pattern A was shown by three species Caprella danilevskii, C. okadai and C. subinermis that produced large first instar young (>1.6 mm in body length, BL) with no maternal care, and directly use Sargassum thalli as habitat substrata throughout their lives. Two different patterns of microhabitat use occur in the six other species, which produce small first instar young (<1.3 mm BL) and have trouble using Sargassum thalli as their primary habitat. Pattern B comprised of C. decipiens, C. monoceros and C. scaura in which females care for their young until they become large enough to disperse onto the seaweed thalli. The first instar young of these three maternal care species have specialized pereopods. In Caprella monoceros and C. scaura, which show a ‘cling-to-mother’ type of maternal care, each pereopod has a concaved margin on the propodus and a long dactylus, well adapted for clinging to the mother, and C. decipiens, which show a ‘stay-around-mother’ type of maternal care, have comparatively slender and longer pereopods to hold onto seaweed branches near their mother. Pattern C included C. arimotoi, C. glabra and C. penantis which showed no maternal care and use thin branches of epizoites such as epiphytic hydroids as their primary substrata. It is concluded that caprellids that live on seaweed with thick thalli and branches such as Sargassum patens have different solutions to the problem of where the small first instar young can live: species with larger young emerge directly onto seaweed thalli, but species with smaller young use an epiphytic secondary habitat or depend on maternal care.

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“…However, a female-dominated sex ratio is not unusual for amphipods and may be related to several factors such as food availability, longevity between sexes, local concentration of females due to migration, or male predation [41]. For example, there is evidence of sex-specific predation in corophiid amphipods [42,43], whose males emerge from the sediment in search of a female to reproduce, exposing themselves to higher predation. When males of L. richiardii were present at both sampling times (in about 50-60% of ascidians), they were found primarily with other females, probably to use P. mammillata as a mating ground.…”

Section: Discussionmentioning

confidence: 99%

The Ascidian–Amphipod Association between Phallusia mammillata (Cuvier, 1815) and Leucothoe richiardii (Lessona, 1865) in the Mar Grande of Taranto (Mediterranean Sea, Italy)

Arduini,

Doria,

Borghese

et al. 2023

JMSE

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Amphipods are widespread in the marine environment, and some have adopted a symbiotic lifestyle, such as numerous species of the genus Leucothoe (Leach, 1814). Unfortunately, few examples of such a relationship are known for the Mediterranean Sea. In the present study, we report for the first time the symbiotic relationship between Leucothoe richiardii (Lessona, 1865) and the ascidian Phallusia mammillata (Cuvier, 1815) from the Mar Grande of Taranto. Two samplings were carried out in November 2021 and May 2022, and the population structure of L. richiardii was also analyzed in relation to host weight. L. richiardii was found to live its entire cycle in P. mammillata. The amphipod population was dominated by females, and in most cases, juveniles of various sizes were found together with adults, indicating prolonged parental care. The host selection by the amphipods proved to be random and was determined by the abundance/availability of ascidians rather than their weight. The ascidians showed no signs of disturbance by the inhabiting amphipods, although they were present in large numbers, and we assumed that the relationship between L. richiardii and P. mammillata was commensal.

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Reproductive biology of a filter-feeding amphipod, Leptocheirus pinguis , with extended parental care

Cited by 13 publications

References 25 publications

Life history and reproductive biology of the invasive amphipod Melita palmata (Amphipoda: Melitidae) in the Mar Chiquita coastal lagoon, Argentina

Life history and reproductive biology of the invasive amphipod Melita palmata (Amphipoda: Melitidae) in the Mar Chiquita coastal lagoon, Argentina

Morphological characteristics of young, maternal care behaviour and microhabitat use by caprellid amphipods

The Ascidian–Amphipod Association between Phallusia mammillata (Cuvier, 1815) and Leucothoe richiardii (Lessona, 1865) in the Mar Grande of Taranto (Mediterranean Sea, Italy)

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